Photovoltaic device

Abstract

The utility model provides a photovoltaic device. The photovoltaic device comprises a light-permeable first shape part, a light-permeable second shape part and a battery part. The first shape part is provided with a first surface and a second surface which are opposite, the first surface is a curved surface, and the second surface comprises at least one first plane. The second shape portion has a third surface and a fourth surface opposite to each other. The battery part is arranged between the second surface and the third surface. According to the photovoltaic device provided by the embodiment of the invention, the battery part is arranged between the second surface of the first shape part and the third surface of the second shape part, the first surface of the first shape part is set to be a curved surface, and the second surface is set to be a plane or a sawtooth-shaped surface, so that the structure of the whole photovoltaic device is a special-shaped structure; therefore, the photovoltaic device can adapt to various environments, and the application scenarios of the photovoltaic device are increased.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic technology, and in particular to a photovoltaic device. Background Art

[0002] Photovoltaic technology is developing rapidly, efficiency is constantly improving, costs are constantly decreasing, and its application and popularization are becoming faster and more widespread. Limited by the processing technology and materials of solar cells, current photovoltaic power generation devices are mainly rectangular flat panels, which are laid in large ground power stations, distributed power stations, building exterior surfaces and roofs.

[0003] As the application scenarios of photovoltaic devices increase, flat panels are difficult to meet the shape requirements of different scenarios and cannot be better integrated with the scenarios, so product applications are limited. Utility Model Content

[0004] The embodiments of the present application provide a photovoltaic device to at least partially improve the above problems.

[0005] The implementation method of the present application is achieved through the following technical solutions.

[0006] In a first aspect, an embodiment of the present application provides a photovoltaic device, comprising: a light-transmissive first shape portion, a second shape portion, and a battery portion. The first shape portion has a first surface and a second surface opposite to each other, the first surface is a curved surface, and the second surface includes at least one first plane. The second shape portion has a third surface and a fourth surface opposite to each other. The battery portion is disposed between the second surface and the third surface.

[0007] In some embodiments, the second surface includes one of the first planes, the battery portion includes a plurality of battery cells and wires, the plurality of battery cells are attached to the first plane, and the plurality of battery cells are connected in series or in parallel via the wires.

[0008] In some embodiments, the second surface includes a plurality of the first planes, the plurality of the first planes are sequentially spliced, and adjacent first planes are not coplanar.

[0009] In some embodiments, the battery unit includes a plurality of battery cells and wires, each of the battery cells is respectively attached to one of the first planes, and the plurality of battery cells are connected in series or in parallel via the wires.

[0010] In some embodiments, the angle between two adjacent first planes is between 150° and 180°.

[0011] In some embodiments, the fourth surface is a plane.

[0012] In some embodiments, the third surface includes a plurality of second planes, the plurality of second planes are sequentially spliced, adjacent second planes are not coplanar, and the plurality of second planes are arranged in a one-to-one correspondence with the plurality of battery cells.

[0013] In some embodiments, the fourth surface is a curved surface that matches the first surface.

[0014] In some embodiments, the wires of the battery portion are all disposed on a side of the battery portion close to the third surface.

[0015] In some embodiments, the second surface and the third surface are respectively connected to the battery portion via adhesive films.

[0016] The photovoltaic device provided in the embodiment of the present application is configured such that the battery portion is disposed between the second surface of the first shape portion and the third surface of the second shape portion, and the first surface of the first shape portion is configured as a curved surface, and the second surface is configured as at least one first plane. The first shape portion can be configured as different curved surfaces according to different application environments, so that the structure of the entire photovoltaic device is an irregular structure, thereby increasing the application scenarios of the photovoltaic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the implementation mode of the present application, the drawings required for use in the description of the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic structural diagram of a photovoltaic device provided in one embodiment of the present application is shown.

[0019] Figure 2 An exploded view of a photovoltaic device provided in one embodiment of the present application is shown.

[0020] Figure 3 A schematic structural diagram of another photovoltaic device provided in an embodiment of the present application is shown.

[0021] Figure 4 A schematic structural diagram of a first shape portion provided in one embodiment of the present application is shown.

[0022] Figure 5 A schematic structural diagram of another first shape portion provided in an embodiment of the present application is shown.

[0023] Figure 6 A schematic structural diagram of a second shape portion provided in one embodiment of the present application is shown.

[0024] Reference numerals: photovoltaic device 1 , first shape portion 10 , first surface 110 , second surface 120 , first plane 121 , second shape portion 20 , third surface 210 , second plane 211 , fourth surface 220 , battery portion 30 , battery cell 310 , wire 320 , adhesive film 40 . DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the implementation mode of the present application. Obviously, the described implementation mode is only a part of the implementation mode of the utility model, not all the implementation modes. Based on the implementation mode in the utility model, all other implementation modes obtained by those skilled in the art without making creative work are within the scope of protection of the utility model.

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present application.

[0027] Photovoltaic technology is developing rapidly, efficiency is constantly improving, costs are constantly decreasing, and its application and popularization are becoming faster and more widespread. Limited by the processing technology and materials of solar cells, current photovoltaic power generation devices are mainly rectangular flat panels, which are laid in large ground power stations, distributed power stations, building exterior surfaces and roofs.

[0028] With the diversification of photovoltaic device application scenarios, traditional flat panel photovoltaic devices have been unable to meet the needs of various complex shapes. When these devices need to be installed on tiled roofs or irregularly shaped roofs, their limitations become particularly obvious. In addition, when photovoltaic devices need to be installed on uneven ground, flat panel photovoltaic devices cannot be better integrated with these complex terrains, which makes installation difficult and inefficient. This situation not only limits the scope of application of photovoltaic devices, but also affects their overall performance and efficiency. Therefore, we need a new type of photovoltaic device to overcome these limitations and expand its application scenarios.

[0029] Please also see Figure 1 and Figure 2 The embodiment of the present application provides a photovoltaic device 1, which can be used to absorb sunlight and convert solar energy into electrical energy for storage. The photovoltaic device 1 may include: a first shape portion 10, a second shape portion 20, and a battery portion 30, and the battery portion 30 may be arranged between the first shape portion 10 and the second shape portion 20. The photovoltaic device 1 may be pressed into a whole by high temperature, so that the stability of the photovoltaic device 1 can be improved.

[0030] For details, please continue to refer to Figure 2 The first shape portion 10 may have a first surface 110 and a second surface 120 opposite to each other. The first surface 110 is a surface away from the battery portion 30. For the entire photovoltaic device 1, the first surface 110 is a part of the outer surface of the photovoltaic device 1, and the surface is the light-facing surface. The second surface 120 is a surface in contact with the battery portion 30. For the entire photovoltaic device 1, the second surface 120 is a part of the inner surface of the photovoltaic device 1, and the surface is the backlight surface.

[0031] In one embodiment, the first shape part 10 and the battery part 30 may be connected by an adhesive film 40, and the second shape part 20 and the battery part 30 may also be connected by an adhesive film 40. It should be noted that the embodiment of the present application does not limit the number of layers of the adhesive film 40, for example, it may be one layer or multiple layers. Specifically, in one embodiment, the adhesive film 40 may be provided on the second surface 120 and the third surface 210, and the battery part 30 is attached to the second surface 120 and the third surface 210 to achieve the connection between the first shape part 10, the battery part 30 and the second shape part 20. In another embodiment, the adhesive film 40 may be provided on the second surface 120, the third surface 210 and the surface of the battery part 30, so as to further improve the stability of the connection between the first shape part 10 and the battery part 30 and the stability of the connection between the second shape part 20 and the battery part 30.

[0032] It should be noted that the adhesive film 40 is a hot melt adhesive, that is, at room temperature, the adhesive film 40 is in a solid form and does not have stickiness. However, when the adhesive film 40 is heated to a specific temperature, it will melt quickly and tightly adhere to the object in contact with it. Specifically, the adhesive film 40 can be made of thermoplastic or thermosetting materials, such as polyvinyl chloride, polyethylene, polypropylene, polyamide, polyester, polycarbonate, etc. These materials become soft and easy to flow when heated, but once cooled, they become hard and elastic, which helps to improve the structural strength and stability of the photovoltaic device 1.

[0033] At the same time, since the adhesive film 40 is made of thermoplastic or thermosetting material, it also has certain insulation properties and can effectively protect the photovoltaic device 1 from problems such as electric shock or short circuit.

[0034] In addition, the adhesive film 40 also has good weather resistance and anti-aging properties. Even under harsh environmental conditions, such as high temperature, low temperature, and humidity, the adhesive film 40 can maintain its original properties and shape to ensure stable operation of the photovoltaic device 1.

[0035] In one embodiment, the film 40 can be made of a transparent material, so that the film 40 can reduce the blocking of sunlight by the film 40 and facilitate the battery unit 30 to absorb sunlight. It can be understood that in other embodiments, the film 40 can also be colored. For example, when the photovoltaic device 1 is installed on the snow, the film 40 can be set to white. When the photovoltaic device 1 is installed on a plain, the film 40 can be set to camouflage or yellow, etc. It can be set specifically according to the actual installation scenario and is not limited here. It should be noted that when the film 40 is set to be transparent, the film 40 has the highest transmittance to sunlight and the best power generation efficiency.

[0036] Specifically, in this embodiment, the first shape part 10 can be made of a light-transmitting material, such as glass or a transparent material such as a polymer. These materials have high transparency, so that the first shape part 10 can present a clear and transparent appearance, thereby making the entire device more beautiful. In addition, these materials also have good chemical stability and weather resistance, and can work stably for a long time in various environments. Therefore, the use of these materials can make the first shape part 10 have better durability and reliability. Sunlight can pass through the first shape part 10 and shine on the battery part 30. It should be noted that the embodiment of the present application does not limit the color of the first shape part 10, and can be set according to different usage scenarios. The first shape part 10 can have a matching color that matches the environment. For example, when the photovoltaic device 1 is installed on the snow, the first shape part 10 can be set to white, or set to transparent. When the photovoltaic device 1 is installed on the plain, the first shape part 10 can be set to camouflage or yellow. It can be understood that when the first shape part 10 is set to transparent, the first shape part 10 has the highest transmittance to sunlight and the best power generation efficiency.

[0037] Furthermore, in some embodiments, the first shape portion 10 may be subjected to color spraying, printing, silk-screening, etc., so that the first shape portion 10 achieves different appearance effects, thereby making the photovoltaic device 1 adaptable to more application scenarios.

[0038] The second shape portion 20 may have a third surface 210 and a fourth surface 220 facing each other, the third surface 210 being a surface in contact with the battery portion 30, and for the entire photovoltaic device 1, the third surface 210 is a part of the inner surface of the photovoltaic device 1, and this surface is the backlight surface, and the fourth surface 220 is a surface away from the battery portion 30, and for the entire photovoltaic device 1, the fourth surface 220 is a part of the outer surface of the photovoltaic device 1, and this surface is the light-facing surface. In other words, the first surface 110 and the fourth surface 220 together constitute the light-facing surface, and the second surface 210 and the third surface 210 together constitute the backlight surface.

[0039] It should be noted that the embodiment of the present application does not limit the specific material of the second shape portion 20. For example, with reference to the first shape portion 10, the second shape portion 20 can also be made of transparent materials such as glass or polymers, which will not be elaborated here. In this way, the first shape portion 10 and the second shape portion 20 of the photovoltaic device 1 can both receive sunlight. Furthermore, the photovoltaic device 1 can be used on both sides, thereby improving the applicability of the photovoltaic device 1.

[0040] The battery part 30 is arranged between the second surface 120 of the first shape part 10 and the third surface 210 of the second shape part 20. In this embodiment, the battery part 30 may include a battery cell 310 and a wire 320. The wire 320 is electrically connected to the battery cell 30, and the wire 320 can be used to output the electric energy stored in the battery cell 30 to the outside.

[0041] It should be noted that the present embodiment does not limit the specific structure of the battery unit 30. Figure 2 For example, in some embodiments, the wires 320 of the battery unit 30 are all arranged on the side of the battery unit 30 close to the third surface 210. Specifically, the battery unit 30 can be a crystalline silicon solar cell, or a stacked cell of crystalline silicon and perovskite thin-film solar energy. The wires 320 of the above-mentioned batteries are all arranged on the side of the battery unit 30 close to the third surface 210. This can reduce the routing length of the wires, and thus facilitate the transmission of the energy of the battery unit 30 through the wires 320.

[0042] In this embodiment, the first surface 110 is a curved surface, and the second surface 120 includes at least one first plane 121 .

[0043] Please also see Figure 3 and Figure 4 In one embodiment, the first surface 110 can be configured as a curved surface, and the second surface 120 includes a first plane 121. The embodiment of the present application does not limit the specific shape of the curved surface structure of the first surface 110, for example, it can be an arc, a wave or other irregular curved surface. Specifically, according to different application scenarios, the first surface 110 can be set to different special-shaped structures, so that the photovoltaic device 1 can be adapted to more application scenarios, such as tile roofs, uneven ground, etc. When the photovoltaic device 1 is installed in the above scene, it will not destroy the original scene structure. For example, when the photovoltaic device 1 is installed on a tile roof, since the first surface 110 can be set as a curved surface, when the photovoltaic device 1 is installed on the tile roof, the applicability of the photovoltaic device 1 is improved. The second surface 120 is set to include a first plane 121, and the battery part 30 is set to a flat structure to avoid bending the battery part 30, thereby reducing the risk of the battery part 30 cracking.

[0044] In some other embodiments, the second surface 120 can also be set to a curved surface with low curvature. For example, the curvature of the second surface 120 can be set to 0 radians / meter-0.01 radians / meter. It should be noted that the above range does not include 0 radians / meter. For example, it can be 10 radians / meter, 25 radians / meter or 50 radians / meter, etc. In this way, the second surface 120 can be approximately regarded as a plane. When the battery part 30 is attached to the second surface 120, due to the lower curvature of the second surface 120, this can also reduce the risk of the battery part 30 splitting.

[0045] In this embodiment, the specific structure of the battery unit 30 is not limited. For example, the battery unit 30 may include multiple battery cells 310 and wires 320. The multiple battery cells 310 may be attached to the first plane 121. The multiple battery cells 310 may be connected in series through the wires 320, which can increase the overall voltage and provide greater output power. In addition, the multiple battery cells 310 may also be connected in parallel through the wires 320, which can increase the overall capacity. The specific way in which the multiple battery cells 310 are connected can be set according to actual conditions and is not limited here.

[0046] See also Figure 5 In another embodiment, the first surface 110 is a curved surface, and the second surface 120 includes a plurality of first planes 121, where a plurality refers to two or more, and the plurality of first planes 121 are sequentially spliced, and adjacent first planes 121 are not coplanar. That is to say, in this embodiment, the second surface 120 can be set to a serrated structure, and the battery unit 30 can include a plurality of battery cells 310 and wires, and each battery cell 310 can be respectively attached to a first plane 121. Similarly, the plurality of battery cells 310 can also be arranged in series or in parallel through wires, which will not be elaborated here. This can also avoid bending the battery unit 30, thereby reducing the risk of the battery unit 30 breaking.

[0047] Specifically, the angle between two adjacent first planes 121 can be set to be between 150° and 180°. It should be noted that the above angle does not include 180°. For example, it can be 150°, 160° or 170°, etc., which can be set according to actual conditions. It is understandable that if the angle between two adjacent first planes 121 is too small, the longitudinal volume of the entire photovoltaic device 1 will be too large, which will make the photovoltaic device 1 inconvenient to carry and install.

[0048] Please also see Figure 3 and Figure 6In one embodiment, the fourth surface 220 of the second shape portion 20 can be set to a plane, so that the photovoltaic device 1 can be more in line with the installation environment when installed on a flat roof or a flat bottom surface, so as to facilitate installation.

[0049] At the same time, in this embodiment, the third surface 210 may also include multiple second planes 211, and the multiple second planes 211 are spliced ​​in sequence. Adjacent second planes 211 are not coplanar, and the multiple second planes 211 are arranged in a one-to-one correspondence with the multiple battery cells 310. The second plane 211 and the first plane 121 can be arranged in parallel. This can facilitate the installation of the battery cell 310 and avoid the battery cell 310 being difficult to adapt after being installed on the first plane 121 and the second plane 211, thereby avoiding the problem of the battery cell 310 breaking during the pressing process of the photovoltaic device 1.

[0050] It can be understood that in some embodiments, the third surface 210 can also be set to a curved surface with low curvature. For example, the curvature of the third surface 210 can be set to 0 radians / meter-0.01 radians / meter. It should be noted that the above range does not include 0 radians / meter. For example, it can be 10 radians / meter, 25 radians / meter or 50 radians / meter, etc. In this way, the third surface 210 can be approximately regarded as a plane. When the battery part 30 is attached to the third surface 210, due to the lower curvature of the third surface 210, this can also reduce the risk of the battery part 30 splitting.

[0051] For further information, please refer again to Figure 1 and Figure 2 In some embodiments, the fourth surface 220 can also be set to a curved surface that matches the first surface 110. For example, the fourth surface 220 and the first surface 110 can be set to the same structure. When the photovoltaic device 1 is installed on a tile roof, since the first surface 110 and the fourth surface 220 are both curved surfaces, it is convenient to install the photovoltaic device 1 on the tile roof, thereby improving the stability of the installation. After the photovoltaic device 1 is installed, it can also adapt to the tile roof, maintain the original curved surface structure of the tile roof, and improve the adaptability of the photovoltaic device 1.

[0052] In addition, since the structures of the fourth surface 220 and the first surface 110 are set to be the same, in other embodiments, the fourth surface 220 can also be installed on a tile roof. In this case, the photovoltaic device 1 can be a structure that can receive sunlight on both sides. This can facilitate user installation and eliminates the step of distinguishing the front and back sides of the photovoltaic device 1.

[0053] The following is the assembly process of the photovoltaic device 1 provided in the embodiment of the present application:

[0054] First, place the adhesive film 40 on the periphery of the battery part 30, and fit the battery part 30 to the second surface 120 of the first shape part 10, at which time there is the adhesive film 40 between the battery part 30 and the second surface 120 of the first shape part 10, and then fit the battery part 30 to the third surface 210 of the second shape part 20, at which time there is the adhesive film 40 between the battery part 30 and the third surface 210 of the second shape part 20, and then press the docked battery part 30, the first shape part 10 and the second shape part 20 together at high temperature. During the high-temperature pressing process, the adhesive film 40 melts to connect the first shape part 10, the battery part 30 and the second shape part 20 as a whole to form a photovoltaic device 1.

[0055] The photovoltaic device 1 provided in the embodiment of the present application has a structure of an irregular shape by arranging the battery part 30 between the second surface 120 of the first shape part 10 and the third surface 210 of the second shape part 20, and setting the first surface 110 of the first shape part 10 as a curved surface and the second surface 120 as a flat surface or a serrated surface, so that the structure of the entire photovoltaic device 1 is an irregular structure, thereby enabling the photovoltaic device 1 to adapt to a variety of environments and increasing the application scenarios of the photovoltaic device 1.

[0056] In this utility model, unless otherwise clearly specified or limited, the terms "installation", "connection" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, an integral connection, or a transmission connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0057] In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as specific or special structures. The description of the term "some embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the present utility model, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present utility model and the features of different embodiments or examples without contradiction.

[0058] The above implementation modes are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned implementation modes, a person skilled in the art should understand that the technical solutions described in the aforementioned implementation modes can still be modified, or some of the technical features can be replaced by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various implementation modes of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A photovoltaic device, characterized in that: include: A light-transmissive first-shaped portion, the first-shaped portion having a first surface and a second surface opposite to each other, the first surface being a curved surface, and the second surface including at least one first plane; a second shape portion, the second shape portion having a third surface and a fourth surface facing each other; and A battery portion is disposed between the second surface and the third surface.

2. The photovoltaic device according to claim 1, characterized in that: The second surface includes the first plane, the battery portion includes a plurality of battery cells and wires, the plurality of battery cells are attached to the first plane, and the plurality of battery cells are connected in series or in parallel via the wires.

3. The photovoltaic device according to claim 1, characterized in that: The second surface includes a plurality of the first planes, the plurality of the first planes are sequentially spliced, and adjacent first planes are not coplanar.

4. The photovoltaic device according to claim 3, characterized in that: The battery unit includes a plurality of battery cells and wires, each of the battery cells is respectively attached to one of the first planes, and the plurality of battery cells are connected in series or in parallel via the wires.

5. The photovoltaic device according to claim 3, characterized in that: The angle between two adjacent first planes is between 150° and 180°.

6. The photovoltaic device according to claim 4, characterized in that: The fourth surface is a plane.

7. The photovoltaic device according to claim 4, characterized in that: The third surface includes a plurality of second planes, the plurality of second planes are sequentially spliced, adjacent second planes are not coplanar, and the plurality of second planes are bonded and arranged in a one-to-one correspondence with the plurality of battery cells.

8. The photovoltaic device according to claim 1, characterized in that: The fourth surface is a curved surface matching the first surface.

9. The photovoltaic device according to claim 1, characterized in that: The conductive wires of the battery part are all arranged on a side of the battery part close to the third surface.

10. The photovoltaic device according to claim 1, characterized in that: The second surface and the third surface are respectively connected to the battery portion through adhesive films.

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