Solar power roof tiles

Abstract

A solar power tile (100) is disclosed, comprising a first plate (110) and a second plate (120), and a battery assembly (130) provided between the first plate (110) and the second plate (120), wherein the battery assembly (130) includes a plurality of battery cells (131), each of which includes at least adjacent first battery cells (131) and second battery cells (131), a portion of the first battery cells (131) overlapping and electrically connected to a portion of the second battery cells (131), and at least one of the first plate (110) and the second plate (120) is constructed as a rigid curved plate, the rigid curved plate includes a plurality of sequentially connected curved portions (140).

Description

Technical Field

[0001] This application relates to the field of solar power generation equipment technology, and specifically to solar power generation tiles.

Background Art

[0002] With the continuous improvement of solar power generation technology and the emergence of new application products, the aesthetics of rooftop solar power generation modules in related technologies can no longer meet the design requirements for solar power generation building projects. In addition, the battery string layer of curved solar power generation tiles generally has solder ribbons, which affect the aesthetics of solar power generation products and the battery cells are likely to be damaged during the lamination process.

Summary of the Invention

Problems to be Solved by the Invention

[0003] This application aims to solve at least one of the technical problems existing in the prior art or related technologies.

Means for Solving the Problems

[0004] Therefore, the first aspect of the embodiment of this application provides a solar power generation tile.

[0005] In view of this, the first aspect according to the embodiment of this application provides a solar power generation tile, which includes a first plate body and a second plate body, and a battery assembly provided between the first plate body and the second plate body. The battery assembly includes a plurality of battery cells, and the plurality of battery cells includes at least an adjacent first battery cell and a second battery cell. A part of the first battery cell overlaps with a part of the second battery cell and is electrically connected. At least one of the first plate body and the second plate body is structured as a rigid curved plate, and the rigid curved plate includes a plurality of curved portions connected in sequence.

[0006] The solar power generation tile according to the embodiment of the present invention comprises a first plate, a second plate, and a battery assembly, specifically, the battery assembly being provided between the first plate and the second plate. Preferably, the first plate is located on the light-receiving side of the battery assembly, and the second plate is located on the non-light-receiving side of the battery assembly, and the first plate is translucent, thereby enabling the battery assembly to convert light energy into electrical energy under light-illuminated conditions.

[0007] The battery assembly comprises multiple battery cells, each of which includes at least a first battery cell and a second battery cell, the first and second battery cells being adjacent to each other, and a portion of the first battery cell overlapping a portion of the second battery cell; in other words, any two adjacent battery cells among the multiple battery cells partially overlap.

[0008] In other words, the multiple battery cells are stacked cells. Compared to single battery cells or battery cells with normal cell spacing in related technologies, this ensures consistency in the appearance of the battery assembly and improves the aesthetics of the solar power roofing tiles.

[0009] The portion where the first battery cell overlaps with the second battery cell is electrically connected; in other words, any two adjacent battery cells among the multiple battery cells are electrically connected using slat technology, meaning the battery assembly adopts a solder ribbon-less design. This avoids the solder ribbon being placed on the light-receiving side of the battery assembly and blocking the light-receiving surface of the battery assembly, thereby improving the power generation efficiency of the solar power tile.

[0010] Furthermore, because solder ribbons are not used in the battery assembly, there is no stress concentration from the solder ribbons, making the battery cells less susceptible to damage during the lamination process and providing a wider range of process adaptability.

[0011] Furthermore, because there is no solder ribbon, stress tension caused by the solder ribbon can be avoided during the bending process of the battery assembly, making it easier to bend the battery assembly, resulting in a greater curvature of the solar panel tiles and further improving the aesthetic appearance of the solar panel tiles.

[0012] Furthermore, since solder ribbon is not required when the first battery cell is electrically connected to the second battery cell, the manufacturing process is simple, which is advantageous in reducing the production cost of solar panels.

[0013] At least one of the first and second plates is constructed as a rigid curved plate. Specifically, the first plate is a rigid curved plate. Or, the second plate is a rigid curved plate. Or, both the first and second plates are rigid curved plates. This can be specifically determined according to the actual requirements.

[0014] Because the rigid curved panel includes multiple sequentially connected curved sections, the solar power generation tile has a high degree of similarity to ordinary roof tiles, improving the aesthetic appearance of the roof surface.

[0015] Furthermore, the solar power generation roof tiles provided by the above-mentioned technical solution have the following additional technical features.

[0016] In some technical means, preferably, the curvature directions of any two adjacent curved sections among the multiple curved sections are opposite.

[0017] In this technical means, at least one of the first and second plates is limited to being a rigid curved plate with a corrugated shape having multiple peaks and valleys. This increases the similarity of the solar power generation tile to ordinary roof tiles, and further ensures the overall appearance and aesthetic appeal of the roof surface.

[0018] In some technical means, preferably, the battery assembly further comprises a conductive connecting member, and the first battery cell and the second battery cell are electrically connected by the conductive connecting member.

[0019] In this technical means, the battery assembly is further limited to comprising a conductive connecting member, specifically, any two adjacent battery cells among a plurality of battery cells are electrically connected by the conductive connecting member to achieve a series connection.

[0020] In some technical means, the conductive connecting member is provided in the overlapping portion of the first battery cell and the second battery cell, and is located between the first battery cell and the second battery cell.

[0021] In this technical means, the conductive connecting member is provided in the overlapping portion between the first and second battery cells and is located between the first and second battery cells. Compared to the case in any of the related technologies where adjacent battery cells are connected by a solder ribbon, this avoids the solder ribbon obstructing the light-receiving surface of the battery assembly, thereby improving the power generation efficiency of the solar panel. Furthermore, it avoids stress concentration occurring at the location of the solder ribbon during the lamination process, which could damage the battery cells, and facilitates the bending and forming of the battery assembly.

[0022] In some technical means, preferably, each battery cell includes a positive electrode layer and a negative electrode layer, and the negative electrode layer of the first battery cell and the positive electrode layer of the second battery cell are electrically connected by a conductive connecting member.

[0023] In this technical means, each battery cell is limited to including a positive electrode layer and a negative electrode layer, and specifically, the negative electrode layer of the first battery cell and the positive electrode layer of the second battery cell are electrically connected by a conductive connecting member, thereby realizing a series connection between any adjacent battery cells.

[0024] In some technical means, preferably, each battery cell further includes a chip layer, and along the thickness direction of the battery cell, a positive electrode layer and a negative electrode layer are located on opposite sides of the chip layer, respectively, and the chip layer is capable of converting light energy into electrical energy.

[0025] In the technical means, each battery cell is limited to further include a chip layer. Specifically, along the thickness direction of the battery cell, the positive electrode layer and the negative electrode layer are respectively on both sides of the chip layer. Thereby, any two adjacent battery cells partially overlap, and at the same time, electrical connection is realized by a conductive connection member, eliminating the need for a solder ribbon, simplifying the manufacturing process, and reducing the production cost of the photovoltaic tile.

[0026] Preferably, the battery cell includes a slot-connected crystalline silicon battery cell.

[0027] Preferably, the positive electrode layer is on the light-receiving side of the chip layer, and the negative electrode layer is on the non-light-receiving side of the chip layer.

[0028] In some technical means, preferably, the overlapping part of the first battery cell and the second battery cell is an overlapping region, and the conductive connection member is within the overlapping region.

[0029] In the technical means, the conductive connection member is located within the overlapping region of any two adjacent battery cells. That is, along the direction in which light irradiates the photovoltaic tile, the projection of the conductive connection member is within the projection range of the overlapping region, that is, the conductive connection member does not exceed the outer edge of the overlapping region. Thereby, effective connection between any two adjacent battery cells is realized, and at the same time, the width of the conductive connection member is not too wide to block the light-receiving surface of the battery cell, improving the power generation amount of the photovoltaic tile.

[0030] In some technical means, preferably, along the width direction of the battery cell, the first end of the conductive connection member is flush with the end in the overlapping region of the first battery cell, and / or along the width direction of the battery cell, the second end of the conductive connection member is flush with the end in the overlapping region of the second battery cell.

[0031] In this technical means, the first end of the conductive connecting member is flush with the end in the overlapping region of the first battery cell along the width direction of the battery cell, thereby ensuring that the conductive connecting member does not extend beyond the outer edge of the overlapping region, improving the power generation efficiency of the solar power tile, while simultaneously ensuring an effective connection between any two adjacent battery cells, thereby improving the reliability of the solar power tile and extending its service life.

[0032] Along the width direction of the battery cell, the second end of the conductive connecting member is flush with the end in the overlapping region of the second battery cell, ensuring that the conductive connecting member does not extend beyond the outer edge of the overlapping region, thereby improving the power generation efficiency of the solar panel, while simultaneously ensuring effective connection between any two adjacent battery cells, improving the reliability of the solar panel, and extending the service life of the solar panel.

[0033] In some technical means, preferably, the conductive connecting member includes a conductive adhesive.

[0034] In this technical means, the conductive connecting member is limited to containing a conductive adhesive, thereby simplifying the manufacturing process of solar power tiles and reducing the production cost of solar power tiles.

[0035] In one specific embodiment, the negative electrode layer of the first slat-connected battery cell (first battery cell 132) and the positive electrode layer of the second slat-connected battery cell (second battery cell) are superimposed and connected to each other via a conductive adhesive. Under high temperature and pressure, the conductive adhesive melts, superimposing the positive and negative electrodes of the two slat-connected battery cells. When the temperature returns to room temperature, the positive and negative electrodes of the two slat-connected battery cells are fixed together, thereby realizing a series connection of the battery cells.

[0036] In some technical means, preferably, the conductive connecting member is provided on the non-light-receiving side of the first battery cell and the second battery cell, and is connected in close contact with at least one of the first battery cell and the second battery cell.

[0037] In this technical means, it is limited to the overlapping of some first battery cells and some second battery cells. That is, adjacent battery cells are arranged in a stack.

[0038] The conductive connecting member is connected in close contact to at least one of the first and second battery cells. Specifically, the conductive connecting member is connected in close contact to the first battery cell, or to the second battery cell, or to both the first and second battery cells. Specifically, this can be set according to the actual requirements.

[0039] Since the conductive connecting member is tightly connected to the first and / or second battery cells, the connection strength between the conductive connecting member and the first and / or second battery cells is increased, ensuring an effective series connection between the first and second battery cells, and further improving the reliability and service life of the solar power roofing tiles.

[0040] To make it clear, when the conductive connecting member is tightly connected to both the first and second battery cells, it is possible to effectively fix the first and second battery cells together, ensuring that the lamination process or bending process proceeds smoothly and preventing damage to the battery cells.

[0041] In some technical means, preferably, the conductive connecting member includes a first connecting portion and a second connecting portion, the first connecting portion being in close contact with the non-light-receiving surface of the first battery cell, and the second connecting portion being in close contact with the non-light-receiving surface of the second battery cell.

[0042] In this technical means, the conductive connecting member is limited to including a first connecting portion and a second connecting portion. Specifically, the first connecting portion is connected in close contact with the non-light-receiving surface of the first battery cell, thereby improving the connection strength between the first connecting portion and the first battery cell. The second connecting portion is connected in close contact with the non-light-receiving surface of the second battery cell, thereby increasing the connection strength between the second connecting portion and the second battery cell, achieving an effective series connection between the first and second battery cells, and ensuring the reliability of the solar power generation tile.

[0043] Furthermore, it is possible to effectively fix the first and second battery cells, ensuring smooth lamination or bending processes, preventing damage to the battery cells, and improving the yield rate of solar power tiles.

[0044] In some technical means, preferably, the conductive connecting member further includes a third connecting portion, which is located between the first and second connecting portions and connected to the first and second connecting portions, and along the width direction of the battery cell, the end face of one end of the second battery cell closest to the first battery cell is in close contact with the third connecting portion.

[0045] In the technical means, the conductive connecting member is further limited to including a third connecting portion, specifically the third connecting portion being located between the first connecting portion and the second connecting portion, specifically one end of the third connecting portion being connected to the first connecting portion and the other end of the third connecting portion being connected to the second connecting portion.

[0046] Along the width direction of the battery cell, the end face of the second battery cell closest to the first battery cell is tightly connected to the third connection part, thereby enhancing the fixing effect of the overlap between the first and second battery cells, further ensuring stability during the lamination or bending process of the battery assembly, ensuring that the lamination or bending process is carried out smoothly, preventing damage to the battery cells, and improving the yield rate of solar power tiles.

[0047] Preferably, the first connection part, the second connection part, and the third connection part have an integrated structure.

[0048] In some technical means, preferably, the battery assembly further includes a group of battery cells, and the group of battery cells includes a plurality of battery cells.

[0049] In this technical means, the battery assembly further includes a group of battery cells, and the group of battery cells is limited to including multiple battery cells, that is, the entire group of battery cells is cut into multiple battery cells, i.e., the entire group of battery cells is cut into smaller battery cells, thereby, in the welding and lamination process of curved photovoltaic products, the smaller battery cells have less deformation, are less prone to breakage, and the processing yield of the photovoltaic tiles is high and reliable.

[0050] Furthermore, by dividing the entire battery cell group into smaller battery cells, it becomes possible to fit various curved solar power generation product packages, and product size and circuit design become more flexible.

[0051] Preferably, the number of battery cells that can be divided into one battery cell group is three or more, and specifically, it may be four, eight, or sixteen.

[0052] Preferably, there are multiple battery cell groups, and each battery cell group is divided into multiple battery cells.

[0053] In some technical means, preferably, each battery cell includes a chip layer, a positive electrode layer, and a negative electrode layer, where the chip layer can convert light energy into electrical energy, and both the positive electrode layer and the negative electrode layer are located on the non-light-receiving side of the chip layer, and of any two adjacent and partially overlapping battery cells, the positive electrode layer of one battery cell is electrically connected to the negative electrode layer of the other battery cell via a conductive connecting member.

[0054] In this technical means, each battery cell is limited to including a chip layer, a positive electrode layer, and a negative electrode layer. Specifically, both the positive electrode layer and the negative electrode layer are located on the non-light-receiving side of the chip layer, meaning that each battery cell is either a back-contact type crystalline silicon solar cell or a tandem cell. That is, both the positive and negative lead terminals of the chip layer are located on the back surface of the chip layer.

[0055] Preferably, the battery cell includes an XBC (cross-finger back-contact solar cell).

[0056] In any two adjacent and partially overlapping battery cells, the positive electrode layer of one battery cell is electrically connected to the negative electrode layer of the other battery cell via a conductive connecting member, thereby achieving a series connection between the adjacent and partially overlapping battery cells.

[0057] In some technical means, preferably, the first plate comprises a glass plate and a first adhesive film, the glass plate is configured as rigid curved glass, and the first adhesive film is provided on the light-receiving side of the glass plate and the battery assembly.

[0058] In this technical means, the first plate comprises a glass plate and a first adhesive film, and specifically, the first adhesive film is provided on the light-receiving side of the glass plate and the battery assembly. As can be understood, both the glass plate and the first adhesive film are light-transmitting.

[0059] Because the glass panels are rigid, curved glass, the solar power roof tiles have a high degree of similarity to ordinary roof tiles and further improve the aesthetic appearance of the roof surface.

[0060] In some technical means, preferably, the second plate includes a back plate and a second adhesive film, the second adhesive film being provided between the non-light-receiving side of the battery assembly and the back plate.

[0061] In this technical means, the second plate body includes a back plate and a second adhesive film, and specifically, the second adhesive film is provided between the non-light-receiving side of the battery assembly and the back plate. That is, the glass plate, the first adhesive film, the battery assembly, the second adhesive film and the back plate are sequentially laminated along the thickness direction of the photovoltaic tile and integrally formed by lamination.

[0062] Preferably, the back plate is constructed as a rigid curved plate.

[0063] Preferably, the backplate is a flexible member.

[0064] Additional aspects and advantages of the present application are partially shown in the following description, partially become apparent from the following description, or can be understood through the practice of the present application. [Brief explanation of the drawing]

[0065] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments combined with the following drawings. [Figure 1] A schematic diagram of the structure of a solar power generation roof tile according to one embodiment of the present invention. [Figure 2] This is a schematic diagram of the structure of a battery assembly according to one embodiment of the present invention. [Figure 3] A schematic diagram of the structure of a solar power generation tile according to another embodiment of the present invention. [Figure 4] This is a schematic diagram of the structure of a battery assembly according to another embodiment of the present invention. [Modes for carrying out the invention]

[0066] The embodiments of the present application shown in the drawings will be described in detail below. In all drawings, the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions. The embodiments described below through the reference drawings are illustrative and for illustrative purposes only, and should not be understood as limitations on the present application.

[0067] The following disclosure provides many different embodiments or examples to realize different structures of the present application. For the sake of simplification of the disclosure, the components and configurations of specific examples are described below. Of course, these are merely examples and are not intended to limit the present application. The present application may repeat reference numbers and / or reference letters in different embodiments, but such repetition is for the purpose of simplification and clarity and does not in itself indicate relationships between the various embodiments and / or configurations discussed. The present application provides examples of various specific processes and materials, but those skilled in the art may be aware of the application of other processes and / or the use of other materials.

[0068] The following shows some embodiments of the solar power generation roof tiles 100 according to the present invention with reference to Figures 1 and 2.

[0069] In one embodiment of the present invention, as shown in Figure 1, a solar power generation tile 100 is provided, comprising a first plate 110 and a second plate 120, and a battery assembly 130 provided between the first plate 110 and the second plate 120, wherein the battery assembly 130 includes a plurality of battery cells 131, each of which includes at least adjacent first battery cells 132 and second battery cells 133, with a portion of the first battery cell 132 overlapping and electrically connected to a portion of the second battery cell 133, and at least one of the first plate 110 and the second plate 120 being constructed as a rigid curved plate, the rigid curved plate including a plurality of sequentially connected curved portions 140.

[0070] The solar power generation tile 100 according to the embodiment of the present application comprises a first plate 110, a second plate 120, and a battery assembly 130, specifically the battery assembly 130 being provided between the first plate 110 and the second plate 120. Preferably, the first plate 110 is on the light-receiving side of the battery assembly 130, and the second plate 120 is on the non-light-receiving side of the battery assembly 130, and the first plate 110 is light-transmitting, thereby enabling the battery assembly 130 to convert light energy into electrical energy under light-illuminated conditions.

[0071] The battery assembly 130 includes a plurality of battery cells 131, each of which includes at least a first battery cell 132 and a second battery cell 133, the first battery cell 132 being adjacent to the second battery cell 133, and a portion of the first battery cell 132 overlapping with a portion of the second battery cell 133, that is, any two adjacent battery cells 131 of the plurality of battery cells 131 partially overlap.

[0072] In other words, the multiple battery cells 131 are stacked cells. Compared to single battery cells and conventionally spaced battery cells in related technologies, this ensures consistency in the appearance of the battery assembly 130 and improves the aesthetic appearance of the solar power roofing tile 100.

[0073] The overlapping portions of the first battery cell 132 and the second battery cell 133 are electrically connected, meaning that any two adjacent battery cells 131 among the multiple battery cells 131 are electrically connected by slat technology. In other words, the battery assembly 130 employs a solder ribbon-less design, avoiding the solder ribbon being placed on the light-receiving side of the battery assembly 130 and blocking the light-receiving surface of the battery assembly 130, thereby improving the power generation efficiency of the solar power generation tile 100.

[0074] Furthermore, since no solder ribbon is provided on the battery assembly 130, there is no stress concentration on the solder ribbon, the battery cells 131 are less likely to be damaged during the lamination process, and there is a wider range of process adaptability.

[0075] Furthermore, because there is no solder ribbon, stress tension on the solder ribbon can be avoided during the bending process of the battery assembly 130. This makes bending the battery assembly 130 easier, allowing the solar panel tile 100 to have a greater curvature and improving its aesthetic appeal.

[0076] Furthermore, since solder ribbon is not required when the first battery cell 132 is electrically connected to the second battery cell 133, the manufacturing process is simpler, which is advantageous in reducing the production cost of the solar power tile 100.

[0077] At least one of the first plate 110 and the second plate 120 is constructed as a rigid curved plate. Specifically, the first plate 110 is a rigid curved plate. Alternatively, the second plate 120 is a rigid curved plate. Alternatively, both the first plate 110 and the second plate 120 are rigid curved plates. Specifically, this can be set according to the actual requirements.

[0078] The rigid curved panel includes a plurality of sequentially connected curved sections 140, thereby giving the solar power generation tile 100 a high degree of similarity to ordinary roof tiles and further improving the aesthetic appearance of the roof surface.

[0079] As shown in Figure 1, in some embodiments, preferably, the curvature directions of any two adjacent curved portions 140 among the plurality of curved portions 140 are opposite.

[0080] In this embodiment, at least one of the first plate 110 and the second plate 120 is limited to being a rigid curved plate with a corrugated shape having multiple peaks and valleys. This gives the solar power generation tile 100 greater similarity to ordinary roof tiles, further ensuring the integrity and aesthetic appeal of the roof surface.

[0081] As shown in Figure 2, in some embodiments, preferably, the battery assembly 130 further comprises a conductive connecting member 150, which is provided in the overlapping portion of the first battery cell 132 and the second battery cell 133 and is located between the first battery cell 132 and the second battery cell 133, and the first battery cell 132 and the second battery cell 133 are electrically connected by the conductive connecting member 150.

[0082] In this embodiment, the battery assembly 130 is further limited to comprising a conductive connecting member 150, specifically, the conductive connecting member 150 is provided in the overlapping portion of the first battery cell 132 and the second battery cell 133, and is located between the first battery cell 132 and the second battery cell 133, that is, any two adjacent battery cells 131 of the plurality of battery cells 131 are electrically connected by the conductive connecting member 150, thereby achieving a series connection.

[0083] This effectively avoids blocking the light-receiving surface of the battery assembly 130 by solder ribbons, compared to the case where any adjacent battery cells in the related technologies are connected by solder ribbons, thereby improving the power generation efficiency of the solar power tile 100. Furthermore, during the lamination process, stress concentration occurs at the location where the solder ribbons are positioned, preventing damage to the battery cells 131 and facilitating the bending and forming of the battery assembly 130.

[0084] As shown in Figure 2, in some embodiments, preferably, each battery cell 131 includes a positive electrode layer 134 and a negative electrode layer 135, and the negative electrode layer 135 of the first battery cell 132 and the positive electrode layer 134 of the second battery cell 133 are electrically connected by a conductive connecting member 150.

[0085] In this embodiment, each battery cell 131 is limited to including a positive electrode layer 134 and a negative electrode layer 135. Specifically, the negative electrode layer 135 of the first battery cell 132 and the positive electrode layer 134 of the second battery cell 133 are electrically connected by a conductive connecting member 150, thereby realizing a series connection between any adjacent battery cells 131.

[0086] As shown in Figure 2, in some embodiments, preferably, each battery cell 131 further includes a chip layer 136, and along the thickness direction of the battery cell 131, a positive electrode layer 134 and a negative electrode layer 135 are located on opposite sides of the chip layer 136, respectively, and the chip layer 136 can convert light energy into electrical energy.

[0087] In this embodiment, each battery cell 131 is further limited to including a chip layer 136, specifically, the positive electrode layer 134 and the negative electrode layer 135 are located on either side of the chip layer 136 along the thickness direction of the battery cell 131. This allows any two adjacent battery cells 131 to partially overlap while simultaneously achieving electrical connection by the conductive connecting member 150, eliminating the need for solder ribbons, simplifying the manufacturing process, and reducing the production cost of the solar panel 100.

[0088] Preferably, the battery cell 131 includes a slat-connected crystalline silicon battery cell.

[0089] Preferably, the positive electrode layer 134 is on the light-receiving side of the chip layer 136, and the negative electrode layer 135 is on the non-light-receiving side of the chip layer 136.

[0090] As shown in Figure 2, in some embodiments, preferably, the overlapping portion of the first battery cell 132 and the second battery cell 133 is an overlapping region 160, and the conductive connecting member 150 is located within the overlapping region 160.

[0091] In this embodiment, the conductive connecting member 150 is located within the overlapping region 160 of any two adjacent battery cells 131. That is, along the direction in which light irradiates the solar power tile 100, the projection of the conductive connecting member 150 is within the projection range of the overlapping region 160. In other words, the conductive connecting member 150 does not extend beyond the outer edge of the overlapping region 160. This ensures an effective connection between any two adjacent battery cells 131 while simultaneously preventing the conductive connecting member 150 from being too wide and blocking the light-receiving surface of the battery cells 131, thereby improving the power generation of the solar power tile 100.

[0092] As shown in Figure 2, in some embodiments, preferably, the first end of the conductive connecting member 150 is flush with the end of the overlapping region 160 of the first battery cell 132 along the width direction of the battery cell 131, and / or the second end of the conductive connecting member 150 is flush with the end of the overlapping region 160 of the second battery cell 133 along the width direction of the battery cell 131.

[0093] In this embodiment, the first end of the conductive connecting member 150 is flush with the end of the overlapping region 160 of the first battery cell 132 along the width direction of the battery cell 131. This ensures that the conductive connecting member 150 does not extend beyond the outer edge of the overlapping region 160, thereby improving the power generation efficiency of the solar power tile 100, while simultaneously ensuring an effective connection between any two adjacent battery cells 131, improving the reliability of the solar power tile 100, and extending its service life.

[0094] Along the width direction of the battery cell 131, the second end of the conductive connecting member 150 is flush with the end of the second battery cell 133 in the overlapping region 160. This ensures that the conductive connecting member 150 does not extend beyond the outer edge of the overlapping region 160, thereby improving the power generation efficiency of the solar panel 100, while simultaneously ensuring an effective connection between any two adjacent battery cells 131, improving the reliability of the solar panel 100, and extending its service life.

[0095] In some embodiments, preferably, the conductive connecting member 150 includes a conductive adhesive.

[0096] In this embodiment, the conductive connecting member 150 is limited to containing a conductive adhesive, thereby simplifying the manufacturing process of the solar power tile 100 and reducing the production cost of the solar power tile 100.

[0097] In one specific embodiment, the negative electrode layer 135 of the first slat-connected battery cell (first battery cell 132) and the positive electrode layer 134 of the second slat-connected battery cell (second battery cell 133) are overlapped and connected to each other via a conductive adhesive. Under high temperature and pressure, the conductive adhesive melts, overlapping and connecting the positive and negative electrodes of the two slat-connected battery cells. When the temperature returns to room temperature, the positive and negative electrodes of the two slat-connected battery cells are fixed in place, thereby realizing a series connection of the battery cells 131.

[0098] As shown in Figure 1, in some embodiments, the first plate 110 preferably includes a glass plate 111 and a first adhesive film 112, the glass plate 111 is configured as rigid curved glass, and the first adhesive film 112 is provided on the light-receiving side of the glass plate 111 and the battery assembly 130.

[0099] In this embodiment, the first plate 110 is limited to including a glass plate 111 and a first adhesive film 112, specifically the first adhesive film 112 being provided on the light-receiving side of the glass plate 111 and the battery assembly 130. As can be understood, both the glass plate 111 and the first adhesive film 112 are light-transmitting.

[0100] Since the glass plate 111 is a rigid curved glass, the solar power generation tile 100 has a high degree of similarity to ordinary roof tiles and further improves the aesthetic appearance of the roof surface.

[0101] As shown in Figure 1, in some embodiments, the second plate 120 preferably includes a back plate 121 and a second adhesive film 122, the second adhesive film 122 being provided between the non-light-receiving side of the battery assembly 130 and the back plate 121.

[0102] In this embodiment, the second plate 120 is limited to including a back plate 121 and a second adhesive film 122. Specifically, the second adhesive film 122 is provided between the back plate 121 and the non-light-receiving side of the battery assembly 130. In other words, the glass plate 111, the first adhesive film 112, the battery assembly 130, the second adhesive film 122, and the back plate 121 are sequentially laminated along the thickness direction of the solar power generation tile 100 and formed integrally by lamination.

[0103] Preferably, the back plate 121 is constructed as a rigid curved plate.

[0104] Preferably, the backplate 121 is a flexible member.

[0105] Currently, in rooftop solar power generation modules using related technologies, battery strings generally employ a front-welding method, or a method of welding both the front and back surfaces to achieve series connection between multiple battery cells. This means that the battery string has solder ribbons on the front surface, or solder ribbons on both the front and back surfaces. The solder ribbons on the front surface block a portion of the light-receiving surface of the battery string, reducing the power generation efficiency of the rooftop solar power generation module.

[0106] Hereinafter, with reference to Figures 3 and 4, we will describe some embodiments of the battery assembly 130 and solar power generation tile 100 according to the present invention.

[0107] In one embodiment of the present invention, as shown in Figure 3, a battery assembly 130 is provided, which comprises a plurality of battery cells 131 in which any two adjacent cells partially overlap and which can convert light energy into electrical energy, and a conductive connecting member 150 provided on the non-light-receiving side 170 of the plurality of battery cells 131, wherein at least two partially overlapping battery cells 131 are electrically connected by the conductive connecting member 150.

[0108] The battery assembly 130 according to the embodiment of the present application comprises a plurality of battery cells 131 and a conductive connecting member 150, specifically, any two adjacent battery cells 131 of the plurality of battery cells 131 partially overlap, preferably the plurality of battery cells 131 include adjacent first battery cells 132 and second battery cells 133, with a portion of the first battery cell 132 overlapping a portion of the second battery cell 133. That is, the plurality of battery cells 131 are stacked cells. Compared with single battery cells or normally spaced battery cells in related technologies, the appearance consistency of the battery assembly 130 can be ensured and the aesthetic appearance of the solar power roofing tile 100 can be improved.

[0109] At least two partially overlapping battery cells 131 are electrically connected by a conductive connecting member 150, thereby achieving a series connection between at least two stacked cells 131.

[0110] Preferably, of the multiple battery cells 131 in the same row, each pair of adjacent battery cells 131 partially overlaps, and the conductive connecting member 150 is connected to the multiple battery cells 131, that is, each pair of adjacent battery cells 131 is electrically connected by the conductive connecting member 150. Preferably, the conductive connecting member 150 includes a solder ribbon.

[0111] Preferably, there are multiple conductive connecting members 150, and each pair of adjacent battery cells 131 are electrically connected by one conductive connecting member 150. Specifically, this can be configured according to the actual requirements.

[0112] Each battery cell 131 can convert light energy into electrical energy; that is, under light-illuminated conditions, light enters the light-receiving side 180 of multiple battery cells 131, is converted by the multiple battery cells 131, and generates electrical energy.

[0113] The conductive connecting member 150 is provided on the non-light-receiving side 170 of the multiple battery cells 131. In other words, in order to eliminate the solder ribbon on the front of the battery string in related technologies, compared to the case in related technologies where a solder ribbon is provided on the front of the battery string, the conductive connecting member 150 effectively avoids blocking the light-receiving side 180 of the multiple battery cells 131, allowing the battery assembly 130 to receive a larger amount of solar radiation, and significantly improving the power generation efficiency and output of the photovoltaic roofing tile 100.

[0114] Since conductive connecting members 150 are provided only on the non-light-receiving sides 170 of multiple battery cells 131, when the battery assembly 130 undergoes lamination curved surface molding, the conductive connecting members 150 on the back surface can effectively disperse the stress impact received by the overlapping portions of adjacent battery cells 131, effectively reducing the failure rate of the battery cells 131 and further improving the yield rate of the solar power generation tile 100.

[0115] Furthermore, when lamination bending is performed on the battery assembly 130, a uniform force can be applied to the edge positions of the battery cells 131, and the rate of damage to the edge positions of the battery cells 131 is further reduced, because two adjacent battery cells 131 are partially overlapped before being connected in series by the conductive connecting member 150.

[0116] Furthermore, providing the conductive connecting members 150 on the back surfaces of multiple battery cells 131 is advantageous in improving the aesthetic appearance of the solar power generation roof tiles 100.

[0117] As shown in Figure 3, in some embodiments, preferably, the plurality of battery cells 131 include adjacent first battery cells 132 and second battery cells 133, a portion of the first battery cell 132 overlapping a portion of the second battery cell 133, and the conductive connecting member 150 being tightly connected to at least one of the first battery cell 132 and the second battery cell 133.

[0118] In this embodiment, the plurality of battery cells 131 are limited to including adjacent first battery cells 132 and second battery cells 133, and specifically, some of the first battery cells 132 and some of the second battery cells 133 overlap. That is, adjacent battery cells 131 are arranged in a stack.

[0119] The conductive connecting member 150 is connected in close contact to at least one of the first battery cell 132 and the second battery cell 133. Specifically, the conductive connecting member 150 is connected in close contact to the first battery cell 132. Alternatively, the conductive connecting member 150 is connected in close contact to the second battery cell 133. Alternatively, the conductive connecting member 150 is connected in close contact to both the first battery cell 132 and the second battery cell 133. Specifically, this can be set according to the actual requirements.

[0120] Since the conductive connecting member 150 is connected in close contact with the first battery cell 132 and / or the second battery cell 133, the connection strength between the conductive connecting member 150 and the first battery cell 132 and / or the second battery cell 133 is increased, ensuring an effective series connection between the first battery cell 132 and the second battery cell 133, and further improving the reliability and service life of the solar power generation tile 100.

[0121] To make it clear, when the conductive connecting member 150 is tightly connected to both the first battery cell 132 and the second battery cell 133, the first battery cell 132 and the second battery cell 133 are effectively fixed, ensuring smooth progress of the lamination process or bending process and preventing damage to the battery cell 131.

[0122] As shown in Figure 3, in some embodiments, the conductive connecting member 150 preferably includes a first connecting portion 151 and a second connecting portion 152, the first connecting portion 151 being in close contact with the non-light-receiving surface of the first battery cell 132, and the second connecting portion 152 being in close contact with the non-light-receiving surface of the second battery cell 133.

[0123] In this embodiment, the conductive connecting member 150 is limited to including a first connecting portion 151 and a second connecting portion 152. Specifically, the first connecting portion 151 is connected in close contact with the non-light-receiving surface of the first battery cell 132, thereby improving the connection strength between the first connecting portion 151 and the first battery cell 132. The second connecting portion 152 is connected in close contact with the non-light-receiving surface of the second battery cell 133, thereby improving the connection strength between the second connecting portion 152 and the second battery cell 133, achieving an effective series connection between the first battery cell 132 and the second battery cell 133, and ensuring the reliability of the solar power generation tile 100.

[0124] Furthermore, the first battery cell 132 and the second battery cell 133 may be effectively fixed, ensuring smooth progress of the lamination process or bending process, preventing damage to the battery cell 131, and improving the yield rate of the solar power generation tile 100.

[0125] As shown in Figure 3, in some embodiments, preferably, the conductive connecting member 150 further comprises a third connecting portion 153, which is located between the first connecting portion 151 and the second connecting portion 152, and is connected to the first connecting portion 151 and the second connecting portion 152. Along the width direction of the battery cell 131, the end face of one end of the second battery cell 133 closest to the first battery cell 132 is in close contact with the third connecting portion 153.

[0126] In this embodiment, the conductive connecting member 150 is further limited to comprising a third connecting portion 153, specifically the third connecting portion 153 being located between the first connecting portion 151 and the second connecting portion 152, and specifically one end of the third connecting portion 153 being connected to the first connecting portion 151 and the other end of the third connecting portion 153 being connected to the second connecting portion 152.

[0127] Along the width direction of the battery cell 131, the end face of the second battery cell 133 closest to the first battery cell 132 is tightly connected to the third connecting portion 153. This enhances the fixing effect of the overlapping portion between the first battery cell 132 and the second battery cell 133, further ensuring stability during the lamination or bending process of the battery assembly 130, ensuring the smooth progress of the lamination or bending process, preventing damage to the battery cell 131, and improving the yield rate of the solar power generation tile 100.

[0128] Preferably, the first connecting portion 151, the second connecting portion 152, and the third connecting portion 153 are integrated into a single structure.

[0129] In some embodiments, preferably, the battery assembly 130 further includes a group of battery cells, and the group of battery cells includes a plurality of battery cells 131.

[0130] In this embodiment, the battery assembly 130 further includes a group of battery cells, and the group of battery cells includes a plurality of battery cells 131. In other words, by cutting the entire group of battery cells into a plurality of battery cells 131, that is, by cutting the group of battery cells into smaller battery cells 131, the smaller battery units have less deformation during the welding and lamination process of the curved photovoltaic product, are less prone to breakage, and the processing yield of the photovoltaic roof tiles 100 is high and reliable.

[0131] Furthermore, by dividing the entire group of battery cells into smaller battery cells 131, it becomes possible to adapt to the packaging of various curved solar power generation products, and product size and circuit design become more flexible.

[0132] Preferably, the number of battery cells 131 that can be divided into one battery cell group is three or more, and specifically, it may be four, eight, or sixteen.

[0133] Preferably, there are multiple battery cell groups, and each battery cell group is divided into multiple battery cells 131.

[0134] In some embodiments, preferably, each battery cell 131 includes a chip layer, a positive electrode layer, and a negative electrode layer, the chip layer being capable of converting light energy into electrical energy, both the positive electrode layer and the negative electrode layer being located on the non-light-receiving side 170 of the chip layer, and of any two adjacent and partially overlapping battery cells 131, the positive electrode layer of one battery cell 131 is electrically connected to the negative electrode layer of the other battery cell 131 by a conductive connecting member 150.

[0135] In this embodiment, each battery cell 131 is limited to including a chip layer, a positive electrode layer, and a negative electrode layer. Specifically, both the positive electrode layer and the negative electrode layer are located on the non-light-receiving side 170 of the chip layer, meaning that each battery cell 131 is a back-contact crystalline silicon solar cell or a tandem cell. That is, both the positive and negative lead terminals of the chip layer are located on the back surface of the chip layer.

[0136] Preferably, the battery cell 131 includes an XBC (cross-finger back-contact solar cell).

[0137] Of two adjacent and partially overlapping battery cells 131, the positive electrode layer of one battery cell 131 is electrically connected to the negative electrode layer of the other battery cell 131 by a conductive connecting member 150, thereby realizing a series connection between the adjacent and partially overlapping battery cells 131.

[0138] According to a second aspect of the present application, a solar power generation tile 100 is provided, comprising a battery assembly 130 according to any of the embodiments described above, and thus possessing all the beneficial technical effects of the battery assembly 130, which will not be repeated here.

[0139] As shown in Figure 4, in some embodiments, the solar power generation tile 100 preferably further comprises a glass plate 111, a first adhesive film 112, a back plate 121, and a second adhesive film 122, wherein the first adhesive film 112 is provided between the glass plate 111 and the light-receiving side 180 of the battery assembly 130, and the second adhesive film 122 is provided between the back plate 121 and the non-light-receiving side 170 of the battery assembly 130.

[0140] In this embodiment, the solar power generation tile 100 is limited to comprising a battery assembly 130, a glass plate 111, a first adhesive film 112, a back plate 121, and a second adhesive film 122. Specifically, the first adhesive film 112 is provided between the light-receiving side 180 of the battery assembly 130 of the glass plate 111, and as can be understood, both the glass plate 111 and the first adhesive film 112 are light-transmitting.

[0141] The second adhesive film 122 is provided between the back plate 121 and the non-light-receiving side 170 of the battery assembly 130. In other words, the glass plate 111, the first adhesive film 112, the battery assembly 130, the second adhesive film 122, and the back plate 121 are sequentially laminated along the thickness direction of the solar power generation tile 100 and formed integrally by lamination.

[0142] As shown in Figure 4, in some embodiments, preferably, at least one of the glass plate 111 and the back plate 121 is constructed as a rigid curved plate.

[0143] In this embodiment, specifically, the glass plate 111 is a rigid curved plate. Alternatively, the back plate 121 is a rigid curved plate. Alternatively, both the glass plate 111 and the back plate 121 are rigid curved plates. Specifically, this can be set according to the actual requirements.

[0144] The glass plate 111, the first adhesive film 112, the battery assembly 130, the second adhesive film 122, and the back plate 121 are sequentially laminated and then laminated to form a single unit, i.e., a solar power tile 100. Since at least one of the glass plate 111 and the back plate 121 is a rigid curved plate, the formed solar power tile 100 is a curved solar power tile. As can be seen, the curved solar power tile has a higher degree of similarity to a normal roof surface, further ensuring the unity and aesthetic appeal of the roof surface appearance.

[0145] As shown in Figure 4, in some embodiments, the rigid curved plate preferably includes a plurality of sequentially connected curved sections 140.

[0146] In this embodiment, since the rigid curved plate includes a plurality of sequentially connected curved sections 140, the solar power generation tile 100 has a high degree of similarity to ordinary roof tiles and further improves the aesthetic appearance of the roof surface.

[0147] Preferably, the curvature directions of any two adjacent curved sections 140 among the multiple curved sections 140 are opposite. That is, at least one of the glass plate 111 and the back plate 121 is a rigid curved plate with a corrugated shape having multiple peaks and valleys. This gives the solar power tile 100 a greater resemblance to ordinary roof tiles and further ensures the integrity and aesthetic appeal of the roof surface appearance.

[0148] In one specific embodiment, as shown in Figure 3, the first XBC battery cell (first battery cell 132) and the second XBC battery cell (second battery cell 133) are welded to each other in series using a back-side solder ribbon (conductive connecting member 150). When multiple groups of XBC battery cells overlap and are welded to each other, a series connection of an XBC battery circuit can be realized.

[0149] In this specification, reference terms such as “one embodiment,” “several embodiments,” “exemplary embodiment,” “example,” “specific example,” or “several examples” refer to specific features, structures, materials, or characteristics described in combination with such embodiments or examples that are included in at least one embodiment or example of this application. In this specification, the above-mentioned exemplary descriptions do not necessarily refer to the same embodiment or example. Furthermore, specific features, structures, materials, or characteristics described can be combined in an appropriate manner in any or more embodiments or examples.

[0150] Although embodiments of this application have been presented and described, those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this application, and that the scope of this application is limited by the claims and their equivalents. Cross-reference to related applications

[0151] This application claims priority and interest in the patent application no. 202420372848.6, submitted to the China National Patent Office on 27 February 2024, and the patent application no. 202420353914.5, submitted to the China National Patent Office on 26 February 2024, the entire contents of which are incorporated herein by reference. [Explanation of symbols]

[0152] 100 Solar power generation tile, 110 First plate, 111 Glass plate, 112 First adhesive film, 120 Second plate, 121 Back plate, 122 Second adhesive film, 130 Battery assembly, 131 Battery cell, 132 First battery cell, 133 Second battery cell, 134 Positive electrode layer, 135 Negative electrode layer, 136 Chip layer, 140 Curved section, 150 Conductive connecting member, 160 Overlapping region, 170 Non-light receiving side, 180 Light receiving side.

Claims

1. These are solar power generation roof tiles, A first plate and a second plate, The device comprises a battery assembly provided between the first plate and the second plate, wherein the battery assembly includes a plurality of battery cells, each of which includes at least adjacent first and second battery cells, and a portion of the first battery cell overlaps and is electrically connected to a portion of the second battery cell. A solar power generation tile in which at least one of the first plate and the second plate is constructed as a rigid curved plate, and the rigid curved plate includes a plurality of curved sections connected sequentially.

2. The solar power generation tile according to claim 1, wherein the curvature directions of any two adjacent curved portions among the plurality of curved portions are opposite.

3. The aforementioned battery assembly is The solar power generation tile according to claim 1, further comprising a conductive connecting member, wherein the first battery cell and the second battery cell are electrically connected by the conductive connecting member.

4. The solar power generation tile according to claim 3, wherein the conductive connecting member is provided in the overlapping portion of the first battery cell and the second battery cell, and is located between the first battery cell and the second battery cell.

5. Each of the aforementioned battery cells includes a positive electrode layer and a negative electrode layer. The solar power generation tile according to claim 4, wherein the negative electrode layer of the first battery cell and the positive electrode layer of the second battery cell are electrically connected by the conductive connecting member.

6. Each of the aforementioned battery cells is The photovoltaic tile according to claim 5, further comprising a chip layer, wherein the positive electrode layer and the negative electrode layer are located on opposite sides of the chip layer along the thickness direction of the battery cell, and the chip layer is capable of converting light energy into electrical energy.

7. The overlapping portion of the first battery cell and the second battery cell is an overlapping region. The solar power generation tile according to claim 4, wherein the conductive connecting member is located within the overlapping region.

8. Along the width direction of the battery cell, the first end of the conductive connecting member is flush with the end of the first battery cell in the overlapping region, and / or The solar power generation tile according to claim 7, wherein the second end of the conductive connecting member is flush with the end of the second battery cell in the overlapping region along the width direction of the battery cell.

9. The solar power generation roof tile according to any one of claims 4 to 8, wherein the conductive connecting member comprises a conductive adhesive.

10. The solar power generation tile according to claim 3, wherein the conductive connecting member is provided on the non-light-receiving side of the first battery cell and the second battery cell, and is in close contact with at least one of the first battery cell and the second battery cell.

11. The solar power generation tile according to claim 10, wherein the conductive connecting member includes a first connecting portion and a second connecting portion, the first connecting portion is connected in close contact with the non-light-receiving surface of the first battery cell, and the second connecting portion is connected in close contact with the non-light-receiving surface of the second battery cell.

12. The conductive connecting member further comprises a third connecting portion, the third connecting portion being located between the first connecting portion and the second connecting portion and connected to the first connecting portion and the second connecting portion. The solar power generation tile according to claim 11, wherein, along the width direction of the battery cell, the end face of one end of the second battery cell closest to the first battery cell is in close contact with the third connection portion.

13. The solar power generation tile according to any one of claims 10 to 12, further comprising a group of battery cells, wherein the group of battery cells comprises a plurality of the battery cells.

14. Each of the aforementioned battery cells comprises a positive electrode layer, a negative electrode layer, and a chip layer. The negative electrode layer of the first battery cell and the positive electrode layer of the second battery cell are electrically connected by the conductive connecting member. The photovoltaic tile according to any one of claims 10 to 13, wherein both the positive electrode layer and the negative electrode layer are located on the non-light-receiving side of the chip layer, and the chip layer is capable of converting light energy into electrical energy.

15. The first plate is A glass plate constructed as a rigid curved glass, A solar power generation tile according to any one of claims 1 to 14, comprising a first adhesive film provided on the light-receiving side of the glass plate and the battery assembly.

16. The second plate is Backplate and A solar power generation tile according to any one of claims 1 to 14, further comprising a second adhesive film provided between the non-light-receiving side of the battery assembly and the back plate.

Images