Battery assembly and photovoltaic tile

Abstract

The utility model provides a battery assembly and a photovoltaic tile, the battery assembly comprises a plurality of battery units, any two adjacent battery units in the plurality of battery units are partially overlapped, and each battery unit can convert light energy into electric energy; and the conductive connecting piece is arranged on the backlight sides of the plurality of battery units, and at least two partially overlapped battery units are electrically connected through the conductive connecting piece.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic equipment, in particular to a battery assembly and a photovoltaic tile. Background Art

[0002] At present, in the rooftop photovoltaic modules in the relevant technology, the battery string generally adopts the front welding method, or the front and back welding method, to realize the series connection between multiple battery cells, that is, the battery string has a welding ribbon on the front side, or the battery string has welding ribbons on the front and back sides. The welding ribbon on the front side will block part of the light-receiving surface of the battery string, resulting in a decrease in the power generation efficiency of the rooftop photovoltaic module. Utility Model Content

[0003] The embodiments of the utility model are intended to solve at least one of the technical problems existing in the prior art.

[0004] To this end, a first aspect of an embodiment of the utility model provides a battery assembly.

[0005] A second aspect of the embodiments of the present invention provides a photovoltaic tile.

[0006] In view of this, according to the first aspect of an embodiment of the utility model, a battery assembly is provided, which includes: a plurality of battery cells, any two adjacent battery cells among the plurality of battery cells partially overlap, and each battery cell is capable of converting light energy into electrical energy; a conductive connector, arranged on the backlight side of the plurality of battery cells, and at least two partially overlapping battery cells are electrically connected via the conductive connector.

[0007] The battery assembly provided by the embodiment of the utility model includes a plurality of battery cells and a conductive connector. Specifically, any two adjacent battery cells in the plurality of battery cells partially overlap. Optionally, the plurality of battery cells include a first battery cell and a second battery cell adjacent to each other, and a portion of the first battery cell overlaps a portion of the second battery cell. That is, the plurality of battery cells are laminated battery cells. Compared with the single-chip battery cells and the battery cells with conventional sheet spacing in the related art, the consistency of the appearance of the battery assembly can be ensured, and the aesthetics of the photovoltaic tile can be improved.

[0008] At least two partially overlapping battery cells are electrically connected via a conductive connector, thereby achieving series connection between at least two laminated battery cells.

[0009] Optionally, in the multiple battery cells in the same row, every two adjacent battery cells partially overlap, and the conductive connector is connected to the multiple battery cells, that is, every two adjacent battery cells are electrically connected through the conductive connector. Optionally, the conductive connector includes a welding strip.

[0010] Optionally, there are multiple conductive connectors, and every two adjacent battery cells are electrically connected via one conductive connector. The number of conductive connectors can be set according to actual needs.

[0011] Since each battery cell can convert light energy into electrical energy, that is, under lighting conditions, light is incident on the light-receiving sides of multiple battery cells and is converted by multiple battery cells to generate electrical energy.

[0012] The conductive connector is arranged on the backlight side of the multiple battery cells. That is, the solder strip located on the front of the battery string in the related art is eliminated. Compared with the solder strip arranged on the front of the battery string in the related art, it can effectively avoid the conductive connector from blocking the light-receiving side of the multiple battery cells, so that the battery assembly can receive more solar radiation, thereby significantly improving the power generation efficiency and power generation of the photovoltaic tile.

[0013] Since conductive connectors are only provided on the backlight side of multiple battery cells, when the battery assembly is laminated and curved, the conductive connectors on the back side can effectively disperse the stress impact on the overlapping parts of adjacent battery cells, thereby effectively reducing the crack rate of the battery cells and further improving the yield of photovoltaic tiles.

[0014] Moreover, by partially overlapping two adjacent battery cells and connecting them in series through a conductive connector, the edge positions of the battery cells can be evenly stressed when the battery assembly is laminated and bent, thereby reducing the breakage rate of the edge positions of the battery cells.

[0015] In addition, arranging the conductive connectors on the back of the plurality of battery cells is also beneficial to improving the aesthetics of the photovoltaic tiles.

[0016] In addition, the battery assembly provided by the above technical solution of the utility model also has the following additional technical features:

[0017] In some technical solutions, optionally, the multiple battery cells include adjacent first and second battery cells, and a portion of the first battery cell and a portion of the second battery cell overlap; wherein the conductive connector is fit-connected to at least one of the first and second battery cells.

[0018] In this technical solution, it is defined that the plurality of battery cells include adjacent first battery cells and second battery cells, specifically, part of the first battery cells and part of the second battery cells overlap, that is, adjacent battery cell stacks are arranged.

[0019] The conductive connector is attached to at least one of the first battery cell and the second battery cell, specifically, the conductive connector is attached to the first battery cell. Alternatively, the conductive connector is attached to the second battery cell. Alternatively, the conductive connector is attached to both the first battery cell and the second battery cell. The configuration may be based on actual needs.

[0020] Since the conductive connector is closely connected to the first battery cell and / or the second battery cell, the connection strength between the conductive connector and the first battery cell and / or the second battery cell can be improved, ensuring effective series connection between the first battery cell and the second battery cell, thereby improving the reliability and service life of the photovoltaic tile.

[0021] It is understandable that when the conductive connector is fitly connected to both the first battery cell and the second battery cell, the first battery cell and the second battery cell can also be effectively fixed to ensure that the lamination process or bending molding can proceed smoothly and prevent the battery cells from breaking.

[0022] In some technical solutions, optionally, the conductive connector includes a first connecting portion and a second connecting portion, the first connecting portion is fitted and connected to the backlight surface of the first battery cell, and the second connecting portion is fitted and connected to the backlight surface of the second battery cell.

[0023] In this technical solution, it is defined that the conductive connector includes a first connecting part and a second connecting part. Specifically, the first connecting part is connected to the backlight surface of the first battery unit, thereby improving the connection strength between the first connecting part and the first battery unit. The second connecting part is connected to the backlight surface of the second battery unit, thereby improving the connection strength between the second connecting part and the second battery unit, achieving effective series connection between the first battery unit and the second battery unit, and ensuring the reliability of the photovoltaic tile.

[0024] Furthermore, the first battery cell and the second battery cell can be effectively fixed to ensure that the lamination process or bending and shaping can proceed smoothly, prevent the battery cell from breaking, and improve the yield of the photovoltaic tile.

[0025] In some technical solutions, optionally, the conductive connector also includes a third connecting portion, which is located between the first connecting portion and the second connecting portion and is connected to the first connecting portion and the second connecting portion; wherein, along the width direction of the battery cell, the end face of the second battery cell close to one end of the first battery cell is fitted and connected to the third connecting portion.

[0026] In this technical solution, it is defined that the conductive connector also includes a third connecting part. Specifically, the third connecting part is located between the first connecting part and the second connecting part. Specifically, one end of the third connecting part is connected to the first connecting part, and the other end of the third connecting part is connected to the second connecting part.

[0027] Along the width direction of the battery cell, the end face of the second battery cell close to one end of the first battery cell is fitted and connected to the third connecting part, thereby further improving the fixing effect of the overlapping part between the first battery cell and the second battery cell, further ensuring the stability of the battery assembly during the lamination process or the bending molding process, ensuring the smooth progress of the lamination process or the bending molding process, preventing the battery cell from breaking, and improving the yield of the photovoltaic tiles.

[0028] Optionally, the first connecting portion, the second connecting portion and the third connecting portion are an integral structure.

[0029] In some technical solutions, optionally, the battery assembly further includes a battery cell, and the battery cell includes a plurality of battery cells.

[0030] In this technical solution, it is defined that the battery assembly also includes a battery cell, and the battery cell includes multiple battery units. That is to say, a whole battery cell is cut into multiple battery units, that is, the whole battery cell is cut into smaller battery units. Therefore, during the welding and lamination process of the curved photovoltaic products, the smaller battery units have smaller deformation and are not easy to break, thereby making the processing yield of the photovoltaic tiles high and the reliability higher.

[0031] Moreover, by dividing the entire battery cell into smaller battery units, it can be adapted to the packaging of various curved photovoltaic products, and the product size and circuit design are flexible.

[0032] Optionally, the number of battery cells that can be divided from a battery sheet is greater than or equal to 3, specifically, it can be 4, 8 or 16.

[0033] Optionally, there are multiple battery cells, and each battery cell is cut into multiple battery units.

[0034] In some technical schemes, optionally, each battery cell includes a battery body, a positive electrode layer and a negative electrode layer, wherein the battery body is capable of converting light energy into electrical energy, and the positive electrode layer and the negative electrode layer are both located on the backlight side of the battery body; wherein, 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 through a conductive connector.

[0035] In this technical solution, it is defined that each battery cell includes a battery body, a positive electrode layer and a negative electrode layer. Specifically, the positive electrode layer and the negative electrode layer are both located on the backlight side of the battery body, that is, each battery cell is a back-contact crystalline silicon solar cell or a stacked cell. That is, the positive and negative lead-out terminals of the battery body are both on the back of the battery body.

[0036] Optionally, the battery cell comprises an XBC (Interdigitated Back Contact Solar Cell).

[0037] 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 through a conductive connector, thereby achieving series connection between any two adjacent and partially overlapping battery cells.

[0038] According to the second aspect of the utility model, a photovoltaic tile is provided, including a battery assembly provided by any of the above technical solutions, thereby having all the beneficial technical effects of the battery assembly, which will not be repeated here.

[0039] In addition, the photovoltaic tile provided according to the above technical solution of the utility model also has the following additional technical features:

[0040] In some technical solutions, optionally, the photovoltaic tile also includes a glass plate, a first adhesive film layer, a back plate and a second adhesive film layer, wherein the first adhesive film layer is arranged between the glass plate and the light-receiving side of the battery assembly, and the second adhesive film layer is arranged between the back plate and the backlight side of the battery assembly.

[0041] In this technical solution, it is defined that the photovoltaic tile includes a battery assembly, a glass plate, a first adhesive film layer, a back plate and a second adhesive film layer. Specifically, the first adhesive film layer is arranged between the light-receiving side of the battery assembly of the glass plate. It can be understood that both the glass plate and the first adhesive film layer are able to transmit light.

[0042] The second adhesive film layer is arranged between the back plate and the backlight side of the battery assembly, that is, along the thickness direction of the photovoltaic tile, the glass plate, the first adhesive film layer, the battery assembly, the second adhesive film layer and the back plate are stacked in sequence and formed into a whole through lamination.

[0043] In some technical solutions, optionally, at least one of the glass plate and the back plate is constructed as a rigid curved plate.

[0044] In this technical solution, specifically, the glass plate is a rigid curved plate. Alternatively, the back plate is a rigid curved plate. Alternatively, the glass plate and the back plate are both rigid curved plates. The specific configuration can be made according to actual needs.

[0045] When the glass plate, the first adhesive film layer, the battery assembly, the second adhesive film layer and the back plate are stacked in sequence, they are laminated to form a whole, namely a photovoltaic tile. Since at least one of the glass plate and the back plate is a rigid curved plate, the formed photovoltaic tile is a curved photovoltaic tile. It can be understood that the curved photovoltaic tile has a high degree of similarity with the daily roof, ensuring the integrity and aesthetics of the roof appearance.

[0046] In some technical solutions, optionally, the rigid curved panel includes a plurality of curved portions connected in sequence.

[0047] In this technical solution, the rigid curved panel includes a plurality of curved portions connected in sequence, so that the photovoltaic tiles have a high degree of similarity with ordinary roof tiles, thereby improving the aesthetics of the roof.

[0048] Optionally, any two adjacent curved portions of the plurality of curved portions have opposite bending directions. That is, at least one of the glass plate and the back plate is a rigid curved plate with multiple peaks and troughs. This makes the photovoltaic tile more similar to ordinary roof tiles, thereby ensuring the integrity and aesthetics of the roof appearance.

[0049] Additional aspects and advantages of the present invention will be given in the following description, and some will become apparent from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0051] Figure 1 A schematic structural diagram of a battery assembly according to an embodiment of the utility model is shown;

[0052] Figure 2 A schematic structural diagram of a photovoltaic tile according to an embodiment of the utility model is shown.

[0053] in, Figure 1 and Figure 2 The corresponding relationship between the reference numerals and the component names is as follows:

[0054] 100 battery assembly, 110 battery cell, 111 first battery cell, 112 second battery cell, 120 conductive connector, 121 first connecting portion, 122 second connecting portion, 123 third connecting portion, 130 backlight side, 140 light receiving side, 150 battery cell, 200 photovoltaic tile, 210 glass plate, 220 first adhesive film layer, 230 back plate, 240 second adhesive film layer, 250 bending portion. DETAILED DESCRIPTION

[0055] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0056] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0057] Refer to the following Figure 1 and Figure 2 The battery assembly 100 and the photovoltaic tile 200 provided according to some embodiments of the present invention are described.

[0058] In one embodiment according to the present application, Figure 1 As shown, a battery assembly 100 is proposed, which includes: a plurality of battery cells 110, any two adjacent battery cells 110 among the plurality of battery cells 110 partially overlap, and each battery cell 110 can convert light energy into electrical energy; a conductive connector 120, which is arranged on the backlight side 130 of the plurality of battery cells 110, and at least two partially overlapping battery cells 110 are electrically connected via the conductive connector 120.

[0059] The battery assembly 100 provided by the embodiment of the utility model includes a plurality of battery cells 110 and a conductive connector 120. Specifically, any two adjacent battery cells 110 in the plurality of battery cells 110 partially overlap. Optionally, the plurality of battery cells 110 include adjacent first battery cells 111 and second battery cells 112, and a portion of the first battery cell 111 overlaps a portion of the second battery cell 112. That is, the plurality of battery cells 110 are laminated battery cells. Compared with the single-chip battery cells and the conventional inter-chip battery cells in the related art, the consistency of the appearance of the battery assembly 100 can be ensured, and the aesthetics of the photovoltaic tile 200 can be improved.

[0060] At least two partially overlapping battery cells 110 are electrically connected via a conductive connector 120 , thereby achieving series connection between at least two laminated battery cells 110 .

[0061] Optionally, in the multiple battery cells 110 in the same row, every two adjacent battery cells 110 partially overlap, and the conductive connector 120 is connected to the multiple battery cells 110, that is, every two adjacent battery cells 110 are electrically connected through the conductive connector 120. Optionally, the conductive connector 120 includes a welding strip.

[0062] Optionally, there are multiple conductive connectors 120, and every two adjacent battery cells 110 are electrically connected via one conductive connector 120. The number of conductive connectors 120 may be set according to actual needs.

[0063] Since each battery unit 110 can convert light energy into electrical energy, that is, under illumination conditions, light is incident on the light-receiving sides 140 of the plurality of battery units 110 and is converted by the plurality of battery units 110 to generate electrical energy.

[0064] The conductive connector 120 is arranged on the backlight side 130 of the plurality of battery cells 110. That is, the solder strip located on the front of the battery string in the related art is eliminated, so compared with the solder strip arranged on the front of the battery string in the related art, the conductive connector 120 can be effectively prevented from shielding the light-receiving side 140 of the plurality of battery cells 110, so that the battery assembly 100 can receive more solar radiation, thereby significantly improving the power generation efficiency and power generation of the photovoltaic tile 200.

[0065] Since the conductive connector 120 is only provided on the backlight side 130 of the plurality of battery cells 110, when the battery assembly 100 is subjected to laminated curved surface shaping, the conductive connector 120 located on the back side can effectively disperse the stress impact on the overlapping parts of the adjacent battery cells 110, thereby effectively reducing the crack rate of the battery cells 110 and further improving the yield of the photovoltaic tile 200.

[0066] Furthermore, by partially overlapping two adjacent battery cells 110 and connecting them in series through the conductive connector 120 , when the battery assembly 100 is laminated and bent, the edge positions of the battery cells 110 can be subjected to an even force, thereby reducing the breakage rate of the edge positions of the battery cells 110 .

[0067] In addition, disposing the conductive connector 120 on the back side of the plurality of battery cells 110 is also beneficial to improving the aesthetics of the photovoltaic tile 200 .

[0068] like Figure 1 As shown, in some embodiments, optionally, the plurality of battery cells 110 include adjacent first battery cells 111 and second battery cells 112, a portion of the first battery cell 111 and a portion of the second battery cell 112 overlap; wherein the conductive connector 120 is fit-connected to at least one of the first battery cell 111 and the second battery cell 112.

[0069] In this embodiment, it is defined that the plurality of battery cells 110 include adjacent first battery cells 111 and second battery cells 112. Specifically, a portion of the first battery cells 111 and a portion of the second battery cells 112 overlap, that is, the adjacent battery cells 110 are stacked.

[0070] The conductive connector 120 is attached to at least one of the first battery cell 111 and the second battery cell 112. Specifically, the conductive connector 120 is attached to the first battery cell 111. Alternatively, the conductive connector 120 is attached to the second battery cell 112. Alternatively, the conductive connector 120 is attached to both the first battery cell 111 and the second battery cell 112. The configuration can be made according to actual needs.

[0071] Since the conductive connector 120 is closely connected to the first battery cell 111 and / or the second battery cell 112, the connection strength between the conductive connector 120 and the first battery cell 111 and / or the second battery cell 112 can be improved, thereby ensuring the effective series connection between the first battery cell 111 and the second battery cell 112, thereby improving the reliability and service life of the photovoltaic tile 200.

[0072] It can be understood that when the conductive connector 120 is fitly connected to the first battery cell 111 and the second battery cell 112, the first battery cell 111 and the second battery cell 112 can also be effectively fixed to ensure that the lamination process or bending molding can proceed smoothly and prevent the battery cell 110 from breaking.

[0073] like Figure 1 As shown, in some embodiments, optionally, the conductive connector 120 includes a first connecting portion 121 and a second connecting portion 122 , the first connecting portion 121 is bonded and connected to the backlight surface of the first battery cell 111 , and the second connecting portion 122 is bonded and connected to the backlight surface of the second battery cell 112 .

[0074] In this embodiment, the conductive connector 120 is defined to include a first connection portion 121 and a second connection portion 122. Specifically, the first connection portion 121 is connected to the backlight surface of the first battery unit 111 in a close fit, thereby improving the connection strength between the first connection portion 121 and the first battery unit 111. The second connection portion 122 is connected to the backlight surface of the second battery unit 112 in a close fit, thereby improving the connection strength between the second connection portion 122 and the second battery unit 112, achieving effective series connection between the first battery unit 111 and the second battery unit 112, and ensuring the reliability of the photovoltaic tile 200.

[0075] Furthermore, the first battery cell 111 and the second battery cell 112 can be effectively fixed to ensure that the lamination process or bending molding can proceed smoothly, prevent the battery cell 110 from breaking, and improve the yield of the photovoltaic tile 200.

[0076] like Figure 1 As shown, in some embodiments, optionally, the conductive connector 120 also includes a third connecting portion 123, which is located between the first connecting portion 121 and the second connecting portion 122 and is connected to the first connecting portion 121 and the second connecting portion 122; wherein, along the width direction of the battery cell 110, the end face of the second battery cell 112 close to one end of the first battery cell 111 is fitted and connected to the third connecting portion 123.

[0077] In this embodiment, it is defined that the conductive connecting member 120 also includes a third connecting portion 123. Specifically, the third connecting portion 123 is located between the first connecting portion 121 and the second connecting portion 122. Specifically, one end of the third connecting portion 123 is connected to the first connecting portion 121, and the other end of the third connecting portion 123 is connected to the second connecting portion 122.

[0078] Along the width direction of the battery cell 110, the end face of the second battery cell 112 close to one end of the first battery cell 111 is fitted and connected to the third connecting portion 123, thereby further improving the fixing effect at the overlapping portion between the first battery cell 111 and the second battery cell 112, further ensuring the stability of the battery assembly 100 during the lamination process or the bending molding process, ensuring the smooth progress of the lamination process or the bending molding process, preventing the battery cell 110 from being broken, and improving the yield of the photovoltaic tile 200.

[0079] Optionally, the first connection portion 121 , the second connection portion 122 and the third connection portion 123 are an integrated structure.

[0080] In some embodiments, optionally, the battery assembly 100 further includes a battery cell 150 , and the battery cell 150 includes a plurality of battery cells 110 .

[0081] In this embodiment, it is defined that the battery assembly 100 also includes a battery cell 150, and the battery cell 150 includes a plurality of battery units 110, that is, a whole battery cell 150 is cut into a plurality of battery units 110, that is, the whole battery cell 150 is cut into smaller battery units 110, so that during the welding and lamination process of the curved photovoltaic product, the smaller battery units 110 have smaller deformation and are not easy to break, thereby making the photovoltaic tile 200 have a high processing yield and higher reliability.

[0082] Moreover, by dividing the entire battery cell 150 into smaller battery units 110, it can be adapted to the packaging of various curved photovoltaic products, and the product size and circuit design are flexible.

[0083] Optionally, the number of battery cells 110 that can be divided from one battery sheet 150 is greater than or equal to 3, specifically, it can be 4, 8 or 16.

[0084] Optionally, there are multiple battery cells 150 , and each battery cell 150 is cut into multiple battery units 110 .

[0085] In some embodiments, optionally, each battery cell 110 includes a battery body, a positive electrode layer and a negative electrode layer, wherein the battery body is capable of converting light energy into electrical energy, and the positive electrode layer and the negative electrode layer are both located on the backlight side 130 of the battery body; wherein, in any two adjacent and partially overlapping battery cells 110, the positive electrode layer of one battery cell 110 is electrically connected to the negative electrode layer of the other battery cell 110 through a conductive connector 120.

[0086] In this embodiment, it is defined that each battery cell 110 includes a battery body, a positive electrode layer and a negative electrode layer. Specifically, the positive electrode layer and the negative electrode layer are both located on the backlight side 130 of the battery body, that is, each battery cell 110 is a back-contact crystalline silicon solar cell or a stacked cell. That is, the positive and negative lead-out terminals of the battery body are both on the back of the battery body.

[0087] Optionally, the battery cell 110 includes an XBC (Interdigitated Back Contact Solar Cell).

[0088] In any two adjacent and partially overlapping battery cells 110 , the positive electrode layer of one battery cell 110 is electrically connected to the negative electrode layer of the other battery cell 110 through the conductive connector 120 , thereby achieving series connection between any two adjacent and partially overlapping battery cells 110 .

[0089] According to the second aspect of the utility model, a photovoltaic tile 200 is provided, including a battery assembly 100 as provided in any of the above embodiments, and thus has all the beneficial technical effects of the battery assembly 100, which will not be repeated here.

[0090] like Figure 2 As shown, in some embodiments, optionally, the photovoltaic tile 200 also includes a glass plate 210, a first adhesive film layer 220, a back plate 230 and a second adhesive film layer 240, wherein the first adhesive film layer 220 is arranged between the glass plate 210 and the light-receiving side 140 of the battery assembly 100, and the second adhesive film layer 240 is arranged between the back plate 230 and the backlight side 130 of the battery assembly 100.

[0091] In this embodiment, it is defined that the photovoltaic tile 200 includes a battery assembly 100, a glass plate 210, a first adhesive film layer 220, a back plate 230 and a second adhesive film layer 240. Specifically, the first adhesive film layer 220 is arranged between the light-receiving side 140 of the battery assembly 100 of the glass plate 210. It can be understood that the glass plate 210 and the first adhesive film layer 220 are both able to transmit light.

[0092] The second adhesive film layer 240 is arranged between the back plate 230 and the backlight side 130 of the battery assembly 100. That is, along the thickness direction of the photovoltaic tile 200, the glass plate 210, the first adhesive film layer 220, the battery assembly 100, the second adhesive film layer 240 and the back plate 230 are stacked in sequence and formed into a whole through lamination.

[0093] like Figure 2 As shown, in some embodiments, optionally, at least one of the glass plate 210 and the back plate 230 is configured as a rigid curved plate.

[0094] In this embodiment, specifically, the glass plate 210 is a rigid curved plate. Alternatively, the back plate 230 is a rigid curved plate. Alternatively, both the glass plate 210 and the back plate 230 are rigid curved plates. The specific configuration can be made according to actual needs.

[0095] When the glass plate 210, the first adhesive film layer 220, the battery assembly 100, the second adhesive film layer 240 and the back plate 230 are stacked in sequence, they are laminated to form a whole, namely, the photovoltaic tile 200. Since at least one of the glass plate 210 and the back plate 230 is a rigid curved plate, the formed photovoltaic tile 200 is a curved photovoltaic tile. It can be understood that the curved photovoltaic tile has a high degree of similarity with the daily roof, ensuring the integrity and aesthetics of the roof appearance.

[0096] like Figure 2 As shown, in some embodiments, optionally, the rigid curved panel includes a plurality of curved portions 250 connected in sequence.

[0097] In this embodiment, the rigid curved panel includes a plurality of curved portions 250 connected in sequence, so that the photovoltaic tile 200 has a high degree of similarity with ordinary roof tiles, thereby improving the aesthetics of the roof.

[0098] Optionally, the bending directions of any two adjacent bending portions 250 of the plurality of bending portions 250 are opposite. That is, at least one of the glass plate 210 and the back plate 230 is a rigid curved plate with multiple peaks and troughs. Thus, the photovoltaic tile 200 has a higher similarity with ordinary roof tiles, thereby ensuring the integrity and aesthetics of the roof appearance.

[0099] In a specific embodiment, Figure 1 As shown, the first XBC battery cell (first battery unit 111) and the second XBC battery cell (second battery unit 112) are welded in series with each other through the back welding strip (conductive connector 120). When multiple groups of XBC battery cells are built and welded to each other, the series connection of the XBC battery circuit can be realized.

[0100] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral 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.

[0101] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. 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 this specification, 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.

[0102] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A battery assembly, characterized in that: include: A plurality of battery cells, any two adjacent battery cells among the plurality of battery cells partially overlap, and each of the battery cells can convert light energy into electrical energy; The conductive connecting member is arranged on the backlight side of the plurality of battery cells, and at least two partially overlapping battery cells are electrically connected via the conductive connecting member.

2. The battery assembly according to claim 1, characterized in that: The plurality of battery cells include a first battery cell and a second battery cell that are adjacent to each other, and a portion of the first battery cell overlaps a portion of the second battery cell; Wherein, the conductive connecting member is closely connected to at least one of the first battery unit and the second battery unit.

3. The battery assembly according to claim 2, characterized in that: The conductive connecting member includes a first connecting portion and a second connecting portion, the first connecting portion is bonded and connected to the backlight surface of the first battery unit, and the second connecting portion is bonded and connected to the backlight surface of the second battery unit.

4. The battery assembly according to claim 3, characterized in that: The conductive connecting member further includes a third connecting portion, the third connecting portion is located between the first connecting portion and the second connecting portion, and is connected to the first connecting portion and the second connecting portion; Wherein, along the width direction of the battery unit, an end surface of the second battery unit close to one end of the first battery unit is fitted and connected to the third connecting portion.

5. The battery assembly according to any one of claims 1 to 4, characterized in that: The battery assembly further comprises a battery cell, and the battery cell comprises a plurality of the battery cells.

6. The battery assembly according to any one of claims 1 to 4, characterized in that: Each of the battery cells comprises: A battery body, wherein the battery body is capable of converting light energy into electrical energy; A positive electrode layer and a negative electrode layer, wherein the positive electrode layer and the negative electrode layer are both located on the backlight side of the battery body; Among them, in any two adjacent and partially overlapping battery cells, the positive electrode layer of one of the battery cells is electrically connected to the negative electrode layer of the other battery cell through the conductive connecting member.

7. A photovoltaic tile, characterized in that: A battery assembly comprising the battery assembly as claimed in any one of claims 1 to 6.

8. The photovoltaic tile according to claim 7, characterized in that: The photovoltaic tile also includes: glass plate; A first adhesive film layer is provided between the glass plate and the light-receiving side of the battery assembly; A back plate and a second adhesive film layer, wherein the second adhesive film layer is arranged between the back plate and the backlight side of the battery assembly.

9. The photovoltaic tile according to claim 8, characterized in that: At least one of the glass sheet and the back sheet is configured as a rigid curved sheet.

10. The photovoltaic tile according to claim 9, characterized in that: The rigid curved plate includes a plurality of curved portions connected in sequence.

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