A BIPV shingled module

Abstract

The present invention discloses a BIPV shingled assembly, including a power generation component, the power generation component includes a plurality of tower shingled modules, each tower shingled module includes a plurality of shingled units, the shingled unit includes a plurality of cells, the plurality of cells are arranged to form a plurality of rows of cell groups, the upper and lower adjacent cell groups are partially stacked; each row of cell groups includes at least one cell, and in a single shingled unit, the lengths of at least two rows of cell groups are unequal. The present invention applies shingling technology to BIPV components, and by designing the structure and arrangement of shingled cells, the BIPV shingled components have a larger light-transmitting area, thereby improving the light transmittance of the photovoltaic components. At the same time, the shingled structure has the effects of high output power, small hot spot effect, and flexible bonding that is not easy to break in the BIPV component, providing a new direction for the application of the shingled structure.

Description

Technical Field

[0001] The invention relates to a BIPV shingled assembly and belongs to the technical field of solar cells. Background Art

[0002] As global climate change and environmental pollution become increasingly serious, solar energy has developed rapidly as a green and renewable energy source. Photovoltaic modules are assembled from a large number of cells and can be used to build various photovoltaic power generation systems, thereby converting light energy into electrical energy.

[0003] To improve the conversion efficiency of photovoltaic modules, shingled modules were developed. A shingled module involves stacking multiple cells in series, creating a front-to-back stack. This creates a seamless gap between cells and eliminates the need for soldering ribbons to obstruct them. This allows for more cells to fit within the same module footprint, expanding the effective power generation area. However, due to the stacked cells, this type of shingled photovoltaic module cannot meet the light transmission requirements of a BIPV module. Therefore, existing shingled technology cannot be applied to BIPV modules. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention aims to provide a BIPV shingled module, which solves the problem that shingled technology cannot be used on BIPV modules in the prior art.

[0005] The present invention is achieved through the following technical solutions: a BIPV shingled assembly, comprising a power generation component, wherein the power generation component comprises a plurality of tower-type shingled modules, each of the tower-type shingled modules comprises a plurality of shingled units, each of the shingled units comprises a plurality of solar cells, the plurality of solar cells are arranged to form a plurality of rows of solar cell groups, and upper and lower adjacent solar cell groups are partially stacked;

[0006] Each row of battery cell groups includes at least one battery cell, and in a single shingled unit, at least two rows of battery cell groups have different lengths.

[0007] Preferably, each row of battery cell groups is provided with a main grid on the back and front sides, the main grid on the front side of the battery cell group is adjacent to the bottom side of the battery cell group, the main grid on the back side of the battery cell group is adjacent to the top side of the battery cell group, and the overlapping parts of the main grid on the back side of the next row of battery cell groups and the main grid on the front side of the previous row of battery cell groups are connected by conductive glue.

[0008] Preferably, in the shingled unit, the two rows of battery cell groups of unequal lengths are respectively the first cell group and the second cell group; the first cell group is a single-cell cell group including a first cell; the second cell group is also a single-cell cell group including a second cell; the area of ​​the first cell is equal to the area of ​​the second cell, and the length of the first cell is unequal to the length of the second cell.

[0009] Preferably, in the shingled unit, the two rows of battery cell groups of unequal lengths are respectively a first battery cell group and a second battery cell group; the first battery cell group is a single-cell battery cell group including a first battery cell; the second battery cell group is a multi-cell battery cell group including a second battery cell, a third battery cell ... an nth battery cell, and the second battery cells, the third battery cells ... the nth battery cells are partially stacked, adjacent, or spaced apart;

[0010] The sum of the areas of the second battery cell, the third battery cell, ..., and the nth battery cell is equal to the area of ​​the first battery cell, and the distance from the starting edge of the second battery cell to the ending edge of the nth battery cell is not equal to the length of the first battery cell.

[0011] Preferably, in the shingled unit, the two rows of battery cell groups of unequal lengths are respectively a first battery cell group and a second battery cell group; the first battery cell group is a multi-battery cell group, including an a1th battery cell, an a2th battery cell, ... anth battery cell, and the a1th battery cell, a2th battery cell, ... anth battery cell are stacked, adjacent, or spaced apart; the second battery cell group is a multi-battery cell group, including a b1th battery cell, b2th battery cell, ... bnth battery cell, and the b1th battery cell, b2th battery cell, ... bnth battery cell are stacked, adjacent, or spaced apart;

[0012] The sum of the areas of the a1th battery cell, the a2th battery cell, ... the anth battery cell is equal to the sum of the areas of the b1th battery cell, the b2th battery cell, ... the bnth battery cell, and the distance from the starting edge of the a1th battery cell to the ending edge of the anth battery cell is not equal to the distance from the starting edge of the b1th battery cell to the ending edge of the bnth battery cell.

[0013] Preferably, each tower shingled module comprises a plurality of shingled units connected in series, and the total number of cells in the plurality of shingled units is less than or equal to 24;

[0014] The plurality of shingled units are arranged in sequence and aligned longitudinally, and upper and lower adjacent shingled units are partially stacked.

[0015] Preferably, the plurality of tower-type shingled modules are arranged in a transverse alignment, and the tower-type shingled modules adjacent to each other on the left and right are spaced a distance apart;

[0016] The plurality of tower shingled modules are arranged in a longitudinal alignment, with the upper tower shingled module and the lower tower shingled module being arranged in opposite directions, and upper and lower adjacent tower shingled modules being spaced a distance apart.

[0017] Preferably, a plurality of the tower-type shingled modules are connected in series or in parallel or in a series-parallel mixed manner to form a power generation component.

[0018] Preferably, it further comprises an upper glass layer, an upper glue film layer, a lower glue film layer and a lower glass layer, wherein the upper glass layer, the upper glue film layer, the power generation component, the lower glue film layer and the lower glass layer are stacked in sequence.

[0019] Compared with the existing technology, the beneficial effects of the present invention are: the present invention applies shingled technology to BIPV modules, and by designing the structure and arrangement of shingled cell sheets, the BIPV shingled modules have a larger light-transmitting area, thereby improving the light transmittance of the photovoltaic modules. At the same time, the shingled structure has high output power, small hot spot effect, and flexible bonding that is not easy to break in the BIPV modules, which provides a new direction for the application of shingled structures and is of great significance to the application of shingled technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of a first shingled unit according to an embodiment of the present invention;

[0021] Figure 2 is a schematic structural diagram of a second shingled unit according to an embodiment of the present invention;

[0022] Figure 3 is a schematic structural diagram of a third shingled unit according to an embodiment of the present invention;

[0023] Figure 4 yes Figure 1 Schematic diagram of the structure of the tower shingled module formed by the middle shingled unit;

[0024] Figure 5 yes Figure 2 Schematic diagram of the structure of the tower shingled module formed by the middle shingled unit;

[0025] Figure 6 yes Figure 3 Schematic diagram of the structure of the tower shingled module formed by the middle shingled unit;

[0026] Figure 7 yes Figure 5 Schematic diagram of the structure of a tower-type shingled array formed by mid-tower shingled modules.

[0027] Reference numerals

[0028] 10-tower shingled module, 20-shingled unit, 31-first cell group, 32-second cell group, 311-first cell, 312-a1th cell, 313-a2th cell, 321-second cell, 322-third cell, 323-b1th cell, 324-b2th cell. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, with examples of the embodiments shown in the accompanying drawings. In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "plurality" means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0030] The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0031] like Figures 1 to 7 As shown, the present invention provides a BIPV shingled assembly, whose main component is a power generation component, which is a tower shingled array formed by multiple tower shingled modules 10. Each tower shingled module 10 includes multiple shingled units 20, and each shingled unit 20 includes multiple battery cells. The multiple battery cells are arranged to form multiple rows of battery cell groups, and the upper and lower adjacent battery cell groups are partially stacked; each row of battery cell groups includes at least one battery cell, and in each shingled unit 20, the lengths of at least two rows of battery cell groups are unequal.

[0032] Each shingled unit 20 comprises at least two rows of cell groups of unequal lengths, creating an unpaved area between the length differences of the cell groups. This, when used as a building photovoltaic module, not only provides a large light-transmitting area, improving the light transmittance of the photovoltaic module, but also achieves high output power, minimal hot spot effects, and flexible, non-breakable bonding in the shingled structure, providing a new direction for the application of shingled structures. Compared to traditional BIPV modules, this embodiment offers higher power generation and better aesthetics.

[0033] The shingled structure in this embodiment refers to the mutual stacking of battery cell groups. Specifically, a main grid (not shown in the figure) is provided on the back and front of each row of battery cell groups. The main grid on the front of the battery cell group is adjacent to the bottom edge of the battery cell group, and the main grid on the back of the battery cell group is adjacent to the top edge of the battery cell group. The overlapping part of the main grid on the back of the next row of battery cell groups and the main grid on the front of the previous row of battery cell groups are flexibly connected by conductive glue.

[0034] In the shingled unit 20 of the present embodiment, the two rows of battery cell groups of unequal lengths are respectively the first cell group 31 and the second cell group 32. The battery cell group in the present embodiment can be a single cell group or a multi-cell group. However, based on the consideration of current transmission, the total area of ​​the battery cells in the first cell group 31 and the total area of ​​the battery cells in the second cell group 32 are the same. The shingled unit 20 formed thereby can be preliminarily divided into three types, which are introduced below.

[0035] The first one:

[0036] like Figure 1 As shown, the first cell group 31 is a single cell group, including a first cell 311; the second cell group 32 is also a single cell group, including a second cell 321. The areas of the first cell 311 and the second cell 321 are equal, but the length of the first cell 311 is not equal to the length of the second cell 321, that is, the width of the first cell 311 is also not equal to the width of the second cell 321.

[0037] Figure 1 The shingled unit 20 listed in the figure is formed by two rows of single-cell groups. Of course, it can also be formed by three rows, four rows...n rows of cell groups. The lengths of the cell groups in each row can be partially the same or completely different.

[0038] The second type:

[0039] like Figure 2 As shown, the first cell group 31 is a single-cell cell group, including a first cell 311; the second cell group 32 is a multi-cell cell group, including a second cell 321, a third cell 322, ..., and an nth cell. The second cell 321, the third cell 322, ..., and the nth cell are partially stacked, adjacent to each other, or arranged at a distance from each other. The second cell 321, the third cell 322, ..., and the nth cell all form a shingled connection with the first cell 311. The sum of the areas of the second cell 321, the third cell 322, ..., and the nth cell is equal to the area of ​​the first cell 311, but the distance from the starting edge of the second cell 321 to the ending edge of the nth cell is different from the length of the first cell 311. Here, the "starting edge" and "ending edge" are explained. When the second battery cell 321, the third battery cell 322...the nth battery cell are arranged from left to right, the leftmost side of the second battery cell 321 is the starting edge, and the rightmost side of the nth battery cell is the ending edge. The "starting edge" and "ending edge" described below also refer to the above explanation.

[0040] Figure 2 In the case where the shingled unit 20 is formed by two rows of battery cell groups, the second cell group 32 includes two battery cells. Of course, it can also be formed by three rows, four rows...n rows of battery cell groups. The length of each row of battery cell groups can be partially the same or completely different, and the number of battery cells in the battery cell group formed by multiple battery cells can be the same or different.

[0041] The third type:

[0042] like Figure 3As shown, the first cell group 31 is a multi-cell group, including the a1-th cell 312, the a2-th cell 313 ... the an-th cell, and the a1-th cell 312, the a2-th cell 313 ... the an-th cell are partially stacked, adjacent to each other, or arranged at a distance from each other; the second cell group 32 is also a multi-cell group, including the b1-th cell 323, the b2-th cell 324 ... the bn-th cell, and the b1-th cell 323, the b2-th cell 324 ... the bn-th cell are partially stacked, adjacent to each other, or arranged at a distance from each other. The sum of the areas of the a1th battery cell 312, the a2th battery cell 313, ... the anth battery cell is equal to the sum of the areas of the b1th battery cell 323, the b2th battery cell 324, ... the bnth battery cell, but the distance from the starting edge of the a1th battery cell 312 to the ending edge of the anth battery cell is not equal to the distance from the starting edge of the b1th battery cell 323 to the ending edge of the bnth battery cell.

[0043] Figure 3 The shingled unit 20 listed in the figure is formed by two rows of battery cell groups. The first cell group 31 includes two battery cells, and the second cell group 32 includes three battery cells. Of course, it can also be formed by three rows, four rows...n rows of battery cell groups. The length of each row of battery cell groups can be partially the same or completely different, and the number of battery cells in each row of battery cell groups can be the same or different.

[0044] In order to further reduce the hot spot effect caused by reverse current, a diode is usually provided in the photovoltaic module. One diode is usually connected in parallel with up to 24 solar cells. Therefore, in this embodiment, each tower shingled module 10 includes a plurality of shingled units 20 connected in series, and the total number of solar cells in the plurality of shingled units is less than or equal to 24. The plurality of shingled units are arranged in a longitudinal alignment in sequence, and the upper and lower adjacent shingled units are partially stacked, such as Figures 4-6 As shown. Figure 5 In the case where the shingled unit 20 is composed of three battery cells, the eight shingled units 20 are arranged in sequence in a longitudinal alignment, and the first battery cell 311 of the lower shingled unit 20 is stacked with the second battery cell 321 and the third battery cell 322 of the upper shingled unit 20. Specifically, the back side of the first battery cell 311 of the lower shingled unit 20 is provided with a main grid adjacent to the top edge, and the front side of the second battery cell 321 and the third battery cell 322 of the upper shingled unit 20 is provided with a main grid adjacent to the bottom edge. The main grid on the back side of the first battery cell 311 is fitted with the main grid on the front side of the second battery cell 321 and the third battery cell 322, so as to realize current transmission inside each shingled unit 20.

[0045] Each power generation component includes a plurality of tower shingled modules 10, and the plurality of tower shingled modules 10 are connected in series or in parallel or in a mixed series and parallel manner to form a tower shingled array, i.e., the power generation component in this embodiment. Figure 7 As shown, in a tower shingled array, multiple tower shingled modules 10 are arranged horizontally and vertically to form a tower shingled array. Multiple tower shingled modules 10 arranged horizontally are aligned horizontally, with a distance between adjacent tower shingled modules 10 on the left and right. A large light-transmitting area is formed between two adjacent battery cell groups with smaller lengths, and a large light-transmitting area is formed between two adjacent battery cell groups with larger lengths. Multiple tower shingled modules 10 arranged vertically are aligned vertically, with the upper tower shingled module 10 and the lower tower shingled module 10 in opposite directions. There is a distance between the upper and lower adjacent tower shingled modules 10. A light-transmitting area is formed between the bottom of the upper tower shingled module 10 and the top of the lower tower shingled module 10.

[0046] It should be noted that the BIPV shingled assembly in this embodiment also includes an upper glass layer, an upper film layer, a lower film layer and a lower glass layer (not shown in the figure). The upper glass layer, the upper film layer, the power generation component, the lower film layer and the lower glass layer are stacked in sequence to form an assembly. The upper film layer and the lower film layer are melted, cooled and solidified in a laminator, so that the power generation component and the upper glass layer and the lower glass layer form a tight connection, forming a photovoltaic assembly for use in buildings.

[0047] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A BIPV shingled assembly, characterized in that: The invention comprises a power generation component, wherein the power generation component comprises a plurality of tower-type shingled modules (10), each of the tower-type shingled modules (10) comprises a plurality of shingled units (20), the shingled units (20) comprise a plurality of battery cells, the plurality of battery cells are arranged to form a plurality of rows of battery cell groups, each row of battery cell groups comprises at least one battery cell, the plurality of battery cells constituting each row of battery cell groups are partially stacked, adjacent or arranged at intervals, and upper and lower adjacent battery cell groups are partially stacked; In the shingled unit (20), the upper row of two adjacent rows of cell groups is a first cell group (31), and the lower row is a second cell group (32); at least one of the first cell group (31) and the second cell group (32) is a single cell group; the total area of ​​the cells of the second cell group (32) is equal to the total area of ​​the cells of the first cell group (31); and in a single shingled module (10), the shingled unit (20) is always such that the total length of the cells of the first cell group (31) is greater than or less than the total length of the cells of the second cell group (32); A plurality of the tower-type shingled modules (10) are arranged adjacently and at intervals.

2. The BIPV shingled assembly according to claim 1, characterized in that: Main grids are arranged on the back and front of each row of battery cell groups. The main grid on the front of the battery cell group is adjacent to the bottom edge of the battery cell group, and the main grid on the back of the battery cell group is adjacent to the top edge of the battery cell group. The overlapping parts of the main grid on the back of the next row of battery cell groups and the main grid on the front of the previous row of battery cell groups are connected by conductive glue.

3. The BIPV shingled assembly according to claim 1 or 2, characterized in that: In the shingled unit (20), two rows of battery cell groups of unequal lengths are respectively a first battery cell group (31) and a second battery cell group (32); the first battery cell group (31) is a single battery cell group, comprising a first battery cell (311); the second battery cell group (32) is also a single battery cell group, comprising a second battery cell (321); the area of ​​the first battery cell (311) is equal to the area of ​​the second battery cell (321), and the length of the first battery cell (311) is unequal to the length of the second battery cell (321).

4. The BIPV shingled assembly according to claim 1 or 2, characterized in that: In the shingled unit (20), the two rows of battery cell groups of unequal lengths are respectively a first battery cell group (31) and a second battery cell group (32); the first battery cell group (31) is a single battery cell group, comprising a first battery cell (311); the second battery cell group (32) is a multi-battery cell group, comprising a second battery cell (321), a third battery cell (322) ... an nth battery cell, and the second battery cells (321), the third battery cells (322) ... the nth battery cells are partially stacked, adjacent or spaced apart; The sum of the areas of the second battery cell (321), the third battery cell (322), ... the nth battery cell is equal to the area of ​​the first battery cell (311), and the distance from the starting edge of the second battery cell (321) to the ending edge of the nth battery cell is not equal to the length of the first battery cell (311).

5. The BIPV shingled assembly according to claim 1, characterized in that: Each tower-type shingled module (10) comprises a plurality of shingled units (20) connected in series, and the total number of cells in the plurality of shingled units (20) is less than or equal to 24; The plurality of shingle units (20) are arranged in sequence and aligned longitudinally, and upper and lower adjacent shingle units (20) are partially stacked.

6. The BIPV shingled assembly according to claim 1, characterized in that: A plurality of the tower-type shingled modules (10) are arranged in a transversely aligned manner, and the tower-type shingled modules (10) adjacent to each other on the left and right are spaced a distance apart; The plurality of tower-type shingled modules (10) are arranged in a longitudinally aligned manner, the upper tower-type shingled module (10) is in opposite directions to the lower tower-type shingled module (10), and the upper and lower adjacent tower-type shingled modules (10) are spaced a distance apart.

7. The BIPV shingled assembly according to claim 1, characterized in that: A plurality of the tower-type shingled modules (10) are connected in series or in parallel or in a series-mixed-parallel manner to form a power generation component.

8. The BIPV shingled assembly according to claim 1, characterized in that: It also includes an upper glass layer, an upper glue film layer, a lower glue film layer and a lower glass layer, wherein the upper glass layer, the upper glue film layer, the power generation component, the lower glue film layer and the lower glass layer are stacked in sequence.

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