Solar cell module

Abstract

The utility model discloses a solar cell module, comprising a plurality of cells, the cells are arranged along a first direction to form cell strings, and the plurality of cell strings are arranged along a second direction to form cell units; in the same battery string, a first gap is formed between the adjacent battery pieces, a second gap is formed in the side part of the battery unit, and third gaps are formed between the adjacent battery strings and at the edge of the battery string in the same battery unit; a first shielding strip is further included, and the first shielding strip can shield the first gap; the device further comprises a second shielding strip, and the second shielding strip can shield the second gap. And a third shielding strip is further included, and the third shielding strip can shield the third gap. According to the utility model, the gap between the battery piece and the battery string can be shielded, the coating and processing costs of the adhesive film and the back plate are saved, and the shielding performance and the consistency of the front appearance are better.

Description

Technical Field

[0001] This utility model relates to the field of solar cell technology, and in particular to a solar cell module. Background Technology

[0002] Existing back-contact solar cell modules consist of, from front to back, a transparent front sheet, a transparent front encapsulating film, a cell layer, a transparent / colored back encapsulating film, and a colored / transparent backsheet. Because there are gaps between adjacent cells and between adjacent cell strings within the cell layer, these gaps cause parts of the transparent / colored back encapsulating film and colored / transparent backsheet to be exposed. To achieve better uniformity in the front appearance, manufacturers typically set the back encapsulating film or backsheet to a color similar to the front of the cell layer. Specifically, this is achieved by adding black filler to the transparent back encapsulating film or adding a black coating to the inside of the backsheet, making the surface of the back encapsulating film or backsheet black or dark blue, thus similar to the color of the black or dark blue crystalline silicon solar cells. This results in a more uniform color appearance of the entire module when viewed from the front. However, this approach wastes a significant amount of black filler or coating because the black or dark blue area of ​​the backsheet or encapsulant film covers the entire surface. Only a small portion of the backsheet or encapsulant film is actually exposed on the front of the module; the rest is covered by the solar cells and remains unobservable. Therefore, the black filler or coating in this area is overused, increasing the overall cost of the solar module. Furthermore, electrode mounting boxes need to be installed on the backsheet, requiring openings in the backsheet and encapsulant film. Since the internal material of the encapsulant film and backsheet is not the same color as the black or dark blue of its surface, this creates color discrepancies, preventing a completely uniform appearance. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a solar cell module that can shield the gaps between the cells and the cell string, saving on the cost of coatings and processing of the encapsulant and backsheet, and also providing better shielding and consistency with the front appearance.

[0004] To address the aforementioned technical problems, this utility model provides a solar cell module, comprising multiple solar cells arranged along a first direction to form a cell string, and multiple cell strings arranged along a second direction to form a cell unit; within the same cell string, a first gap is provided between adjacent solar cells, the first gap being parallel to the second direction; a second gap is provided on the side of the cell unit, the second gap being parallel to the second direction; within the same cell unit, a third gap is provided between adjacent cell strings and at the edge of the cell string, the third gap being parallel to the first direction, and the first direction and the second direction being perpendicular to each other.

[0005] It also includes a first shielding strip, which is disposed between adjacent battery cells along the second direction, and the first shielding strip can cover the first gap to shield the first gap.

[0006] It also includes a second shielding strip, which is disposed along the second direction at the edge of the battery cell, and the second shielding strip can cover the second gap to shield the second gap.

[0007] It also includes a third shielding strip, which is disposed between adjacent battery strings along the first direction, and the third shielding strip can cover the third gap to shield the third gap.

[0008] As an improvement to the above solution, in the same battery string, the battery cell at the first end in the first direction is the first end battery cell, and the first end battery cell has a first edge on the side away from the first shielding strip. The battery cell at the end in the first direction is the end battery cell, and the end battery cell has a second edge on the side away from the first shielding strip. The side portion of the second shielding strip covers the first edge and the second edge respectively.

[0009] As an improvement to the above solution, in the same battery string, the back side of the battery cell is electrically connected through a first conductive element. The first conductive element is disposed on the side of the first shielding strip away from the front side of the battery cell, and the first shielding strip can shield the first conductive element.

[0010] As an improvement to the above solution, adjacent battery strings are electrically connected by a second conductive element, which is disposed in the second gap along the second direction, and the second shielding strip can shield the second conductive element.

[0011] As an improvement to the above solution, the first conductive element extends out of the second gap and is connected to the second conductive element, and the side portions of the second shielding strip extend out of the first edge and the second edge respectively to shield the first conductive element and the second conductive element simultaneously.

[0012] As an improvement to the above solution, the first shielding strip is provided with a first fixing layer, and the two sides of the first fixing layer overlap with the edges of the two adjacent battery cells and form an adhesive, with an overlap width of not less than 1.5mm.

[0013] As an improvement to the above solution, the first shielding strip is further provided with a first reflective layer, which is located on the side of the first fixing layer away from the battery cell.

[0014] As an improvement to the above solution, the first shielding strip is further provided with a first isolation layer, which is located on the side of the first reflective layer away from the first fixing layer, and the first conductive element can abut against the first isolation layer.

[0015] As an improvement to the above solution, within the second gap, the first conductive element extends from the side of the battery cell formed by the battery sheet and is electrically connected to the second conductive element. A second shielding strip is provided within the second gap, and the edge of the second shielding strip abuts against the first edge or the second edge. Both the first conductive element and the second conductive element can abut against the side of the second shielding strip closest to the back of the battery sheet. The second shielding strip can simultaneously shield the first conductive element extending into the second gap and the second conductive element located within the second gap.

[0016] As an improvement to the above solution, within the second gap, the first conductive element extends from the side of the battery cell formed by the battery sheet and is electrically connected to the second conductive element. The second gap is provided with a first shielding strip and a second shielding strip. One edge of the first shielding strip abuts against either the first edge or the second edge, and one edge of the second shielding strip abuts against one edge of the first shielding strip. The first conductive element abuts against the side of the first shielding strip away from the back of the battery sheet, and the second conductive element abuts against the side of the second shielding strip away from the front of the battery sheet. The first and second shielding strips can shield the first and second conductive elements within the second gap.

[0017] As an improvement to the above solution, within the second gap, the side of the second shielding strip overlaps with the side of the first shielding strip and forms an adhesive bond, and the overlap width between the second shielding strip and the first shielding strip is not less than 1 mm.

[0018] As an improvement to the above solution, the second shielding strip is provided with a second fixing layer, the span of the second fixing layer in the first direction is greater than the span of the second conductive element in the first direction, and the second conductive element can abut against the second fixing layer.

[0019] As an improvement to the above solution, the second shielding strip is further provided with a second reflective layer, which is located on the side of the second fixing layer near the front of the battery cell.

[0020] As an improvement to the above solution, the second shielding strip is further provided with a second isolation layer, which is disposed between the second reflective layer and the second fixing layer.

[0021] As an improvement to the above solution, the third shielding strip is bonded to the back of the battery cell along the first direction and can cover the third gap. The third shielding strip is provided with a third fixing layer. The two sides of the third fixing layer overlap with the edges of two adjacent battery cells and form an adhesive, with an overlap width of not less than 3mm.

[0022] As an improvement to the above solution, the third shielding strip is further provided with a third reflective layer, which is located on the side of the third fixing layer away from the battery cell.

[0023] Implementing this utility model has the following beneficial effects:

[0024] This utility model's solar cell module comprises multiple solar cells, which can be connected to form a battery string, and multiple battery strings can be connected to form a battery cell. A first gap is provided between adjacent solar cells, and a second gap is provided on the side of each battery cell. Within the same battery cell, a third gap is provided between adjacent battery strings. To cover these gaps, the solar cell module further comprises a first shading strip, a second shading strip, and a third shading strip. The first shading strip is disposed along a second direction between adjacent solar cells and covers the first gap. The second shading strip is disposed along the second direction between adjacent battery strings. The first shielding strip is positioned along the first direction between adjacent battery strings and covers the second gap. The gap cannot be observed from the front due to the coverage of the first, second, and third shielding strips. By setting the first, second, and third shielding strips to the same or similar color as the front of the battery, the color uniformity of the front appearance can be improved. Furthermore, since the backplate and back adhesive film are concealed, low-cost colored backplates and back adhesive films can be used, saving material costs, paint costs, and processing costs. The concealing effect is also better than that of colored backplates / back adhesive films. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the front structure of the solar cell module of this utility model;

[0026] Figure 2 This is a schematic diagram of the back structure of the solar cell module of this utility model;

[0027] Figure 3 This is a cross-sectional structural diagram of the first shielding strip of this utility model;

[0028] Figure 4 This is a cross-sectional structural schematic diagram of the first embodiment of the second shielding strip of this utility model;

[0029] Figure 5This is a cross-sectional structural schematic diagram of the second embodiment of the second shielding strip of this utility model;

[0030] Figure 6 This is a cross-sectional structural diagram of the second shielding strip of this utility model;

[0031] Figure 7 This is a cross-sectional structural diagram of the third shielding strip of this utility model. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings. It is hereby declared that the terms "up," "down," "left," "right," "front," "back," "inner," and "outer," etc., appearing or about to appear in this document, are based solely on the accompanying drawings and are not intended to specifically limit this utility model.

[0033] See Figure 1 and Figure 2 This utility model discloses a solar cell module, including a plurality of solar cells 111. The solar cells 111 are arranged along a first direction to form a solar cell string 11, and the plurality of solar cell strings 11 are arranged along a second direction to form a solar cell unit 1. In the same solar cell string 11, a first gap 6 is provided between adjacent solar cells 111, and the first gap 6 is parallel to the second direction. A second gap 7 is provided on the side of the solar cell unit 1, and the second gap 7 is parallel to the second direction. In the same solar cell unit 1, a third gap 8 is provided between adjacent solar cell strings 11 and at the edge of the solar cell string 11, and the third gap 8 is parallel to the first direction. The first direction and the second direction are perpendicular to each other.

[0034] The solar cell module further includes a first shading strip 4, which is disposed between adjacent solar cells 111 along the second direction. The first shading strip 4 can cover the first gap 6 to block the first gap 6.

[0035] The solar cell module further includes a second shading strip 5, which is disposed along the second direction at the edge of the cell unit 1. The second shading strip 5 can cover the second gap 7 to block the second gap 7.

[0036] The solar cell module further includes a third shading strip 9, which is disposed between adjacent cell strings 11 along the first direction. The third shading strip 9 can cover the third gap 8 to shade the third gap 8.

[0037] The beneficial effects of this utility model embodiment are as follows:

[0038] This utility model embodiment of the solar cell module includes multiple solar cells 111, which can be connected to form a battery string 11. Multiple battery strings 11 can be connected to form a battery cell 1. A first gap 6 is provided between adjacent solar cells 111, and a second gap 7 is provided on the side of the battery cell 1. Within the same battery cell 1, a third gap 8 is provided between adjacent battery strings 111. To cover these gaps, the solar cell module of this utility model also includes a first shading strip 4, a second shading strip 5, and a third shading strip 9. The first shading strip 4 is disposed along the second direction between adjacent solar cells 111 and covers the first gap 6. The second shading strip 5 is disposed along the second direction... The first shielding strip 4 is positioned at the edge of the battery cell 1 and covers the second gap 7. The third shielding strip 9 is positioned between adjacent battery strings 11 along the first direction and covers the third gap 8. With the coverage of the first shielding strip 4, the second shielding strip 5 and the third shielding strip 9, the gap cannot be observed from the front. By setting the first shielding strip 4, the second shielding strip 5 and the third shielding strip 9 to the same or similar color as the front of the battery, the color uniformity of the front appearance can be improved. Moreover, the back panel and the back adhesive film are shielded, and low-cost colored back panels and back adhesive films can be used, which can save material costs, paint costs and processing costs. In addition, the shielding effect is better than that of colored back panels / back adhesive films.

[0039] See Figure 2 In the same battery string 11, the battery piece 111 at the first end in the first direction is provided with a first end battery piece 12. The first end battery piece 12 has a first edge 121 on the side away from the first shielding strip 4. The battery piece 111 at the end in the first direction is a last battery piece 13. The last battery piece 13 has a second edge 131 on the side away from the first shielding strip 4. The first end battery piece 12 and the last battery piece 13 are battery pieces 111 located on the side edges of different battery strings 11. For example, the first end battery piece 12 is the battery piece 111 on the upper side edge of one of the battery strings 11, and the last battery piece 13 is the battery piece 111 on the lower side edge of the same battery string 11. The second shielding strip 5 covers the first edge 121 and the second edge 131 respectively to shield the first edge 121 and the second edge 131.

[0040] In the same battery string 11, the back side of the battery cell 111 is electrically connected by a first conductive element 2. The first conductive element 2 is preferably a solder strip. The first conductive element 2 is disposed on the side of the first shielding strip 4 away from the front side of the battery cell 111. The first conductive element 2 is arranged along the first direction. A portion of the first conductive element 2 is exposed in the first gap 6. The first shielding strip 4 can shield the exposed portion of the first conductive element 2.

[0041] Adjacent battery strings 11 are electrically connected by a second conductive element 3, which is preferably a busbar that can be connected to the first conductive element 2 to collect the current collected in each battery string 11. The second conductive element 3 is disposed in the second gap 7 along the second direction, and the second shielding strip 5 can shield the second conductive element 3.

[0042] Specifically, the first conductive element 2 extends out of the second gap 7 and connects with the second conductive element 3 to form a current convergence, and the side portions of the second shielding strip 5 extend out of the first edge 121 and the second edge 131 respectively to simultaneously shield the first conductive element 2 and the second conductive element 3.

[0043] See Figure 3 The first shielding strip 4 is provided with a first fixing layer 41. The two sides of the first fixing layer 41 overlap with the edges of two adjacent battery cells 111 and form an adhesive bond, with an overlap width of not less than 1.5 mm. The first fixing layer 41 can both shield the first conductive element 2 and allow the first conductive element 2 to abut against the first fixing layer 41. Before stringing the first conductive element 2, the first shielding strip 4 is placed first, and then the first conductive element 2 is placed to complete the stringing. The first shielding strip 4 can provide a certain pre-positioning effect for the first conductive element 2. Therefore, during stringing, it can prevent the first conductive element 2 from shifting or misaligning to a certain extent.

[0044] The first shielding strip 4 is also provided with a first reflective layer 42. In the first shielding strip 4, the first fixing layer 41 is a transparent layer, and the first shielding strip 4 is also provided with a first reflective layer 42. The first reflective layer 42 is provided on the side of the first fixing layer 41 away from the battery cell 111, that is, the first fixing layer 41 is provided on the back of the battery cell 111, and the first reflective layer 42 is provided on the back side of the first fixing layer 41. In this way, the light entering the gap between the battery cells 111 will pass through the first fixing layer 41 and fall onto the first reflective layer 42, and then be reflected out by the first reflective layer 42, so that the light can return to the front of the battery cell 111 and improve the light utilization rate.

[0045] The first shielding strip 4 is also provided with a first isolation layer 43. The first isolation layer 43 is disposed on the side of the first reflective layer 42 away from the first fixing layer 41, that is, the first reflective layer 42 is disposed between the first fixing layer 41 and the first isolation layer 43. The first isolation layer 43 reinforces the first shielding strip 4. By placing the first isolation layer 43 on the side of the first reflective layer 42 away from the first fixing layer 41, light passing through the first fixing layer 41 can fall directly onto the first reflective layer 42 without having to pass through the first isolation layer 43, thus reducing light loss. On the other hand, before lamination or string bonding, the first conductive element 2 can abut against the first isolation layer 43. The first conductive element 2 is not easily displaced under the abutment of the first isolation layer 43, thereby achieving a pre-positioning effect for the first conductive element 2.

[0046] See Figure 4 In the first embodiment, the second shielding strip 5 can shield the entire second gap 7. Specifically, within the second gap 7, the first conductive element 2 extends from the side of the battery cell 1 formed by the battery sheet 111 and is electrically connected to the second conductive element 3. Part of the first conductive element 2 is exposed in the second gap 7. The second gap 7 is provided with a second shielding strip 5, which can shield the entire second gap 7. The edges of the second shielding strip 5, the first edge 121 or the second edge 131, abut against each other to achieve the effect of completely covering the second gap 7. Before lamination or string bonding, the first conductive element 2 and the second conductive element 3 located in the second gap 7 can abut against the side of the second shielding strip 5 away from the back of the battery sheet 111, thereby pre-positioning the first conductive element 2 and the second conductive element 3 and preventing the first conductive element 2 and the second conductive element 3 from shifting. Therefore, on the one hand, the second shielding strip 5 can simultaneously shield the first conductive element 2 leading out into the second gap 7 and the second conductive element 3 located in the second gap 7, and on the other hand, it can also preposition the first conductive element 2 and the second conductive element 3.

[0047] See Figure 5In the second embodiment, the first shielding strip 4 and the second shielding strip 5 together shield the second gap 7. Specifically, within the second gap 7, the first conductive element 2 extends from the side of the battery cell 1 formed by the battery sheet 111 and is electrically connected to the second conductive element 3. The second gap 7 is provided with the first shielding strip 4 and the second shielding strip 5. The second shielding strip 5 does not directly contact the battery sheet 111. One side edge of the first shielding strip 4 abuts against the first edge 121 or the second edge 131, and one side edge of the second shielding strip 5 abuts against the first shielding strip 4. The first shielding strip 4 abuts against the back edge of the battery cell 111, and the second shielding strip 5 is then bonded to the front edge of the first shielding strip 4. The first conductive element 2 abuts against the side of the first shielding strip 4 away from the back edge of the battery cell 111, and the second conductive element 3 is connected to the side of the second shielding strip 5 away from the front edge of the battery cell 111. The first shielding strip 4 and the second shielding strip 5 can shield the first conductive element 2 and the second conductive element 3 in the second gap 7 and form a pre-position for the first conductive element 2 and the second conductive element 3.

[0048] In the second embodiment, within the second gap 7, the side of the second shielding strip 5 overlaps with the side of the first shielding strip 4 and forms an adhesive bond, and the overlap width between the second shielding strip 5 and the first shielding strip 4 is not less than 1 mm.

[0049] See Figure 6 The second shielding strip 5 is provided with a second fixing layer 51. The span of the second fixing layer 51 in the first direction is greater than the span of the second conductive element 3 in the first direction, that is, the width of the second fixing layer 51 in the first direction is greater than the width of the second conductive element 3 in the first direction. The second fixing layer 51 can not only shield the second conductive element 3, but also form an adhesive fixation by overlapping the second fixing layer 51 with the battery cell 111 or the first shielding strip 4.

[0050] The second shielding strip 5 is also provided with a second reflective layer 52. The second reflective layer 52 is disposed on the side of the second fixing layer 51 near the front of the battery cell 111. That is, the second reflective layer 52 is disposed on the front of the second fixing layer 51 so that the light entering the gap between the battery cells 111 will fall directly onto the second reflective layer 52 without passing through the second fixing layer 51 and then be reflected out by the second reflective layer 52, so that the light can return to the front of the battery cell 111, thereby reducing light loss and improving light utilization.

[0051] The second shielding strip 5 is also provided with a second isolation layer 53. The second isolation layer 53 is disposed between the second reflective layer 52 and the second fixing layer 51. The second isolation layer 53 reinforces the second shielding strip 5. By disposing of the second isolation layer 53 between the second reflective layer 52 and the second fixing layer 51, light passing through the second fixing layer 51 can fall directly onto the second reflective layer 52 without having to pass through the second isolation layer 53, thus reducing light loss.

[0052] See Figure 7 The third shielding strip 9 is adhered to the back of the battery cell 111 along the first direction and covers the third gap 8. The third shielding strip 9 has a third fixing layer 91, and the two sides of the third fixing layer 91 overlap with the edges of two adjacent battery cells 111 to form an adhesive, with an overlap width of not less than 3mm. The third shielding strip 9 also has a third reflective layer 92, which is located on the side of the third fixing layer 91 away from the battery cell 111. The first fixing layer 41 is a transparent layer, that is, the first fixing layer 41 is located on the back of the battery cell 111, while the first reflective layer 42 is located on the back side of the first fixing layer 41. In this way, light entering the gap between the battery cells 111 will pass through the first fixing layer 41 and fall onto the first reflective layer 42, and then be reflected out by the first reflective layer 42, so that the light can return to the front of the battery cell 111, thereby improving the light utilization rate.

[0053] The above are preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A solar cell module, characterized by, The battery cell includes a plurality of battery pieces arranged along a first direction to form a battery string, and a plurality of battery strings arranged along a second direction to form a battery unit; in the same battery string, a first gap is provided between adjacent battery pieces, and the first gap is parallel to the second direction; a second gap is provided on a side of the battery unit, and the second gap is parallel to the second direction; in the same battery unit, a third gap is provided between adjacent battery strings and edges of the battery strings, and the third gap is parallel to the first direction, and the first direction and the second direction are perpendicular to each other; The battery cell further includes a first shielding strip arranged between adjacent battery pieces along the second direction, and the first shielding strip can cover the first gap to shield the first gap; The battery cell further includes a second shielding strip arranged at an edge of the battery unit along the second direction, and the second shielding strip can cover the second gap to shield the second gap; The battery cell further includes a third shielding strip arranged between adjacent battery strings along the first direction, and the third shielding strip can cover the third gap to shield the third gap.

2. The solar cell module according to claim 1, characterized by In the same battery string, a first end battery piece is arranged at a first end of the first direction, and a first edge is arranged on a side of the first end battery piece away from the first shielding strip; a last end battery piece is arranged at a last end of the first direction, and a second edge is arranged on a side of the last end battery piece away from the first shielding strip; and the second shielding strip covers the first edge and the second edge respectively.

3. The solar cell module according to claim 2, characterized by In the same battery string, the back surface of the battery piece is electrically connected by a first conductive member arranged on a side of the first shielding strip away from the front surface of the battery piece, and the first shielding strip can shield the first conductive member.

4. The solar cell module according to claim 3, characterized by Adjacent battery strings are electrically connected by a second conductive member arranged in the second gap along the second direction, and the second shielding strip can shield the second conductive member.

5. The solar cell module according to claim 4, characterized by The first conductive member extends out of the second gap and is connected to the second conductive member, and the side of the second shielding strip extends out of the first edge and the second edge to shield the first conductive member and the second conductive member at the same time.

6. The solar cell module according to claim 3, wherein The first shielding strip is provided with a first fixing layer, and the two sides of the first fixing layer overlap and are bonded with the edges of the adjacent two battery pieces, and the overlapping width is not less than 1.5 mm.

7. The solar cell module according to claim 6, characterized by The first shielding strip is further provided with a first reflective layer arranged on a side of the first fixing layer away from the battery piece.

8. The solar cell module according to claim 7, characterized by The first shielding strip is further provided with a first isolation layer arranged on a side of the first reflective layer away from the first fixing layer, and the first conductive member can abut on the first isolation layer.

9. The solar cell module according to claim 4, characterized by, The first conductive member is led out from the side of the battery cell formed by the battery piece and is electrically connected with the second conductive member in the second gap, and the second gap is provided with the second shielding strip, the edge of the second shielding strip abuts against the first edge or the second edge, and the first conductive member and the second conductive member can abut against one side of the second shielding strip close to the back surface of the battery piece, so that the second shielding strip can shield the first conductive member led into the second gap and the second conductive member located in the second gap.

10. The solar cell module according to claim 4, characterized by, The first conductive member is led out from the side of the battery cell formed by the battery piece and is electrically connected with the second conductive member in the second gap, and the second gap is provided with the first shielding strip and the second shielding strip, one side edge of the first shielding strip abuts against the first edge or the second edge, and one side edge of the second shielding strip abuts against one side edge of the first shielding strip, the first conductive member abuts against one side of the first shielding strip away from the back surface of the battery piece, and the second conductive member abuts against one side of the second shielding strip away from the front surface of the battery piece, so that the first shielding strip and the second shielding strip can shield the first conductive member and the second conductive member in the second gap.

11. The solar cell module according to claim 10, wherein In the second gap, the side of the second shielding strip overlaps the side of the first shielding strip and forms an adhesive bond, and the overlapping width of the second shielding strip and the first shielding strip is not less than 1 mm.

12. The solar cell module according to claim 4, characterized by, The second shielding strip is provided with a second fixed layer, the span of the second fixed layer in the first direction is greater than the span of the second conductive member in the first direction, and the second conductive member can abut against the second fixed layer.

13. The solar cell module according to claim 12, characterized by The second shielding strip is further provided with a second reflective layer, and the second reflective layer is arranged on one side of the second fixed layer close to the front surface of the battery piece.

14. The solar cell module according to claim 13, characterized by The second shielding strip is further provided with a second isolation layer, and the second isolation layer is arranged between the second reflective layer and the second fixed layer.

15. The solar cell module according to claim 1, characterized by, The third shielding strip is bonded to the back surface of the battery piece along the first direction and can cover the third gap, the third shielding strip is provided with a third fixed layer, and the two sides of the third fixed layer respectively overlap the edges of the two adjacent battery pieces and form an adhesive bond, and the overlapping width is not less than 3 mm.

16. The solar cell module according to claim 15, characterized by The third shielding strip is further provided with a third reflective layer, and the third reflective layer is arranged on one side of the third fixed layer away from the battery piece.

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