CN211428184U - Solar cell panel and photovoltaic module - Google Patents
Solar cell panel and photovoltaic module Download PDFInfo
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- CN211428184U CN211428184U CN202020193588.8U CN202020193588U CN211428184U CN 211428184 U CN211428184 U CN 211428184U CN 202020193588 U CN202020193588 U CN 202020193588U CN 211428184 U CN211428184 U CN 211428184U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The utility model discloses a solar cell panel, which comprises a plurality of solar cell strings; the solar cell string comprises a plurality of solar cells; the main grid of the solar cell is parallel to the cutting edge of the solar cell; and the welding strip of the solar cell string connects the adjacent solar cells in series through the non-cutting edges of the solar cells. Cutting limit accumulation is a large amount of stresses, and among the prior art it is adjacent to weld the area also can contact during the solar wafer cutting limit, the internal stress of further deepening the battery piece finally leads to latent splitting or piece, the utility model discloses a injecing the main grid is on a parallel with the cutting limit of solar wafer makes and welds the area and can not pass through or contact cutting limit, the stress accumulation of greatly reduced welding department, thereby makes solar wafer's latent splitting or piece reduce by a wide margin. The utility model discloses still provide a photovoltaic module who has above-mentioned beneficial effect simultaneously.
Description
Technical Field
The utility model relates to a new forms of energy field especially relates to a solar cell panel and photovoltaic module.
Background
Solar energy is regarded as an inexhaustible clean energy and is increasingly paid more attention by people in various fields. The solar cell has the function of converting solar energy into electric energy to push a terminal load to work. In recent years, the photovoltaic module technology has been developed dramatically, and the continuous innovation of the module technology is significant for realizing the low-price internet access of photovoltaic power generation.
The traditional method is that a certain number of solar cells are welded together in series by a tin-lead-copper based welding strip at a high temperature of 280-380 ℃, then a plurality of welding strings are sequentially laminated according to the laminating sequence of glass-EVA-battery layer-EVA-backboard, and the finished assembly is manufactured by laminating, framing, welding a wire box and the like through a laminating machine. In the traditional welding strip welding, the battery is affected by stress generated by high-temperature welding and is easy to bend, so that hidden cracks or breakage after subsequent lamination are caused; the second is the way IBC components are interconnected using a conductive backplane. However, the former method can cause part of the battery pieces to be invisible, which causes waste; the latter is mainly suitable for IBC battery components, and is not universally applicable.
Therefore, finding a method for preventing the solar cell from subfissure and yield reduction caused by solder strip welding with strong universality is a problem to be solved by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a solar cell panel and photovoltaic module to weld among the solution prior art and take the welding to lead to solar wafer to take place latent splitting easily, problem that the yield is low.
In order to solve the technical problem, the utility model provides a solar cell panel, which comprises a plurality of solar cell strings;
the solar cell string comprises a plurality of solar cells;
the main grid of the solar cell is parallel to the cutting edge of the solar cell;
and the welding strip of the solar cell string connects the adjacent solar cells in series through the non-cutting edges of the solar cells.
Optionally, in the solar cell panel, the solder strip includes a stress buffering hole;
the stress buffer holes are arranged on the surface of the welding strip in sequence at intervals of preset distances.
Optionally, in the solar cell panel, the solder strip is a flat solder strip or a circular solder strip.
Optionally, in the solar cell panel, the surface of the solder strip is provided with a light reflecting layer.
Optionally, in the solar panel, a groove is formed in a position, corresponding to the main grid, of a non-cutting edge of the solar cell piece.
Optionally, in the solar cell panel, the number of the main grids on the solar cell sheet ranges from 5 to 16, inclusive.
Optionally, in the solar panel, the width of the main grid ranges from 0.05 mm to 0.7 mm, inclusive.
Optionally, in the solar cell panel, the number of the solder joints of the main grid on the solar cell sheet ranges from 6 to 16, inclusive.
Optionally, in the solar panel, the overlapping width of the non-cutting edges of the adjacent solar cells ranges from-2.3 mm to 0.5 mm, inclusive.
A photovoltaic module comprising a solar panel as claimed in any one of the preceding claims.
The utility model provides a solar cell panel, which comprises a plurality of solar cell strings; the solar cell string comprises a plurality of solar cells; the main grid of the solar cell is parallel to the cutting edge of the solar cell; and the welding strip of the solar cell string connects the adjacent solar cells in series through the non-cutting edges of the solar cells. Monoblock solar cell original wafer is the polylith in the cutting during the solar wafer, cut the limit and can accumulate a large amount of stresses, and among the prior art the main grid perpendicular to cut the limit setting, lead to it is adjacent to weld the area also can contact during the solar wafer cut the limit, further deepen the internal stress of cell piece and finally lead to latent splitting or piece, the utility model discloses a inject the main grid is on a parallel with the cut limit of solar wafer makes and welds the area and can not pass through or contact cut the limit, greatly reduced the stress accumulation of welding department, thereby makes the latent splitting or the piece of solar wafer reduce by a wide margin, promotes solar cell panel's yield has prolonged the life of device, has changeed and has promoted solar cell panel's output. The utility model discloses still provide a photovoltaic module who has above-mentioned beneficial effect simultaneously.
Drawings
In order to clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a solar cell sheet according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a solar cell sheet according to another embodiment of the solar cell panel provided by the present invention;
fig. 3 is a schematic structural diagram of a solder strip according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a junction of a solar cell string according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a junction of a solar cell string according to another embodiment of the solar cell panel provided by the present invention;
fig. 6 is a schematic circuit diagram of a specific embodiment of a solar cell panel provided by the present invention.
Detailed Description
In order to make the technical field better understand the solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and the detailed description. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The core of the utility model is to provide a solar cell panel, the partial structure schematic diagram of one specific embodiment of which is shown in fig. 1, which is called as the first specific embodiment and comprises a plurality of solar cell strings;
the solar cell string comprises a plurality of solar cells 5;
the main grid 1 of the solar cell 5 is parallel to the cutting edge 2 of the solar cell;
the welding strips of the solar cell string connect the adjacent solar cell slices 5 in series through the non-cutting edges 4 of the solar cell slices 5.
In particular, the number of the main grids 1 on the solar cell 5 ranges from 5 to 16, inclusive, such as any one of 5.0, 10.0, or 16.0. Further, the width of the main grid 1 ranges from 0.05 mm to 0.7 mm, inclusive, such as any one of 0.050 mm, 0.523 mm, or 0.700 mm. Still further, the number of the solder joints 3 of the main grid 1 on the solar cell 5 ranges from 6 to 16, inclusive, such as any one of 6.0, 10.0 or 16.0.
In addition, the width of the overlap of the non-cut edges 4 of adjacent solar cells 5 ranges from-2.3 mm to 0.5 mm, inclusive, such as any of-2.30 mm, 0.00 mm, or 0.50 mm. What need remind, the utility model discloses well overlap the condition that the width is the negative value, indicate that two adjacent solar wafer 5 do not overlap, width data are two solar wafer 5's interval. The data are all the optimal solutions obtained through theoretical calculation and actual inspection, and can be adjusted correspondingly according to actual conditions.
The thin grids of the solar cell are perpendicular to the main grid 1, the number of the thin grids is 90-162, and the width of the thin grids is 0.01-0.03 mm. The number of the welding spots 3 is 6-16, and the size of the welding spots 3 is 0.7 x 1 mm-1 x 1 mm.
It should be noted that, the solar cell pieces 5 in the solar cell string used in the photovoltaic field are all cut from the directly prepared solar cell original pieces, that is, most of the solar cell pieces 5 have cut edges, but it should be particularly noted that the cut edges 2 in the present invention refer to the actually cut edges and the opposite edges of the actually cut edges, and naturally, the non-cut edges 4 refer to another set of opposite edges of the solar cell pieces 5 which are not the cut edges 2. The solar cell wafer is generally divided into two to eight equal parts.
For convenience of understanding, fig. 4 is a connection manner of each solar cell 5 in a string of solar cell strings of a solar cell panel provided by the present invention; fig. 5 shows another connection. Fig. 6 is a schematic circuit diagram of the solar cell panel provided by the present invention, wherein the left and right sides are respectively two different connection modes.
The utility model provides a solar cell panel, which comprises a plurality of solar cell strings; the solar cell string comprises a plurality of solar cells 5; the main grid 1 of the solar cell 5 is parallel to the cutting edge 2 of the solar cell; the welding strips of the solar cell string connect the adjacent solar cell slices 5 in series through the non-cutting edges 4 of the solar cell slices 5. Monoblock solar cell is former piece is being cut for the polylith during solar wafer 5, cut limit 2 can accumulate a large amount of stresses, and among the prior art 1 perpendicular to of main bars cut limit 2 sets up, leads to the solder strip is adjacent in the welding also can contact during solar wafer 5 cut limit 2, the internal stress that further deepens the wafer finally leads to latent splitting or piece, the utility model discloses a injecing main bars 1 is on a parallel with solar wafer 5's cut limit 2 makes the solder strip can not pass through or contact cut limit 2, greatly reduced the stress accumulation of welding department, thereby makes solar wafer 5's latent splitting or piece reduce by a wide margin, promotes solar cell panel's yield has prolonged the life of device, has become to promote solar cell panel's output.
On the basis of the first specific embodiment, the solar cell sheet 5 is further improved to obtain a second specific embodiment, a partial structural schematic diagram of which is shown in fig. 2 and includes a plurality of solar cell strings;
the solar cell string comprises a plurality of solar cells 5;
the main grid 1 of the solar cell 5 is parallel to the cutting edge 2 of the solar cell;
the welding strips of the solar cell string connect the adjacent solar cell slices 5 in series through the non-cutting edges 4 of the solar cell slices 5;
the non-cutting edge 4 of the solar cell 5 is provided with a groove 7 at the position corresponding to the main grid 1.
The difference between the present embodiment and the above embodiments is that the present embodiment defines the shape of the cutting edge 2, and the rest of the structure is the same as the above embodiments, and is not described herein again.
It should be noted that the above "position corresponding to the main grid 1" refers to a position where the extension line of the main grid 1 will intersect with the non-cut edge 4 at this time if the non-cut edge 4 is a flat edge.
In the specific embodiment, the groove 7 is formed in the contact position between the edge of the solar cell piece 5 and the main grid 1, so that the contact of the silicon wafer when the solder strip is connected with the adjacent two main grids 1 of the solar cell piece 5 is greatly reduced, the stress of the contact part is reduced, and the possibility of subfissure and fragmentation of the solar cell piece 5 is further reduced.
On the basis of the second specific embodiment, the solar cell 5 is further improved to obtain a third specific embodiment, and a structural schematic diagram of a solder strip is shown in fig. 3 and includes a plurality of solar cell strings;
the solar cell string comprises a plurality of solar cells 5;
the main grid 1 of the solar cell 5 is parallel to the cutting edge 2 of the solar cell;
the welding strips of the solar cell string connect the adjacent solar cell slices 5 in series through the non-cutting edges 4 of the solar cell slices 5;
a groove 7 is formed in the position, corresponding to the main grid 1, of the non-cutting edge 4 of the solar cell piece 5;
the solder strip comprises a stress buffering hole 6;
the stress buffer holes 6 are arranged on the surface of the welding strip in sequence at intervals of preset distances.
The difference between the present embodiment and the above-mentioned embodiment is that the shape of the solder strip is defined in the present embodiment, and the rest of the structure is the same as that of the above-mentioned embodiment, and will not be described herein again.
The welding strip is limited to be provided with the stress buffer holes 6 in the specific embodiment, so that the stress in the welding process can be absorbed, the stress on the solar cell piece 5 is reduced, the welding strip is prevented from being broken in the welding process, and the yield of finished products is further improved.
Furthermore, the solder strip is a flat solder strip or a circular solder strip, as shown in fig. 3, wherein the left side of fig. 3 is a schematic structural diagram of the flat solder strip, and the right side is a schematic structural diagram of the circular solder strip; furthermore, the surface of the welding strip is provided with a reflecting layer, so that more light rays can be reflected to the silicon chip, and the photoelectric conversion efficiency of the solar cell panel is improved through phase change.
The utility model discloses still provide a photovoltaic module simultaneously, photovoltaic module includes as above-mentioned any one kind solar cell panel. The utility model provides a solar cell panel, which comprises a plurality of solar cell strings; the solar cell string comprises a plurality of solar cells 5; the main grid 1 of the solar cell 5 is parallel to the cutting edge 2 of the solar cell; the welding strips of the solar cell string connect the adjacent solar cell slices 5 in series through the non-cutting edges 4 of the solar cell slices 5. Monoblock solar cell is former piece is being cut for the polylith during solar wafer 5, cut limit 2 can accumulate a large amount of stresses, and among the prior art 1 perpendicular to of main bars cut limit 2 sets up, leads to the solder strip is adjacent in the welding also can contact during solar wafer 5 cut limit 2, the internal stress that further deepens the wafer finally leads to latent splitting or piece, the utility model discloses a injecing main bars 1 is on a parallel with solar wafer 5's cut limit 2 makes the solder strip can not pass through or contact cut limit 2, greatly reduced the stress accumulation of welding department, thereby makes solar wafer 5's latent splitting or piece reduce by a wide margin, promotes solar cell panel's yield has prolonged the life of device, has become to promote solar cell panel's output.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
It is to be noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
It is right above the utility model provides a solar cell panel and photovoltaic module have carried out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. A solar cell panel, comprising a plurality of solar cell strings;
the solar cell string comprises a plurality of solar cells;
the main grid of the solar cell is parallel to the cutting edge of the solar cell;
and the welding strip of the solar cell string connects the adjacent solar cells in series through the non-cutting edges of the solar cells.
2. The solar panel of claim 1, wherein the solder strip includes stress buffering holes;
the stress buffer holes are arranged on the surface of the welding strip in sequence at intervals of preset distances.
3. The solar panel of claim 2, wherein the solder strip is a flat solder strip or a circular solder strip.
4. The solar panel according to claim 1 or 2, wherein the solder strip surface has a light reflecting layer.
5. The solar panel of claim 1, wherein the non-cut edge of the solar cell sheet has a groove at a position corresponding to the primary grid.
6. A solar panel as claimed in claim 1 wherein the number of primary grids on the solar panel ranges from 5 to 16, inclusive.
7. A solar panel as claimed in claim 6 wherein the width of the primary grid ranges from 0.05 mm to 0.7 mm, inclusive.
8. A solar panel as claimed in claim 1 wherein the number of solder joints of the primary grid on the solar panel is in the range 6 to 16 inclusive.
9. The solar panel of claim 1, wherein the overlap of the non-cut edges of adjacent solar cells has a width in the range of-2.3 mm to 0.5 mm, inclusive.
10. A photovoltaic module comprising a solar panel as claimed in any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020193588.8U CN211428184U (en) | 2020-02-21 | 2020-02-21 | Solar cell panel and photovoltaic module |
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| CN202020193588.8U CN211428184U (en) | 2020-02-21 | 2020-02-21 | Solar cell panel and photovoltaic module |
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Cited By (7)
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| CN112038435A (en) * | 2020-09-28 | 2020-12-04 | 东方日升新能源股份有限公司 | Heterojunction battery assembly and preparation method thereof |
| JP7048808B1 (en) | 2021-08-27 | 2022-04-05 | 上海晶科緑能企業管理有限公司 | Solar cells and photovoltaic modules |
| CN114784124A (en) * | 2022-03-24 | 2022-07-22 | 环晟光伏(江苏)有限公司 | Solar cell, cell string and solar cell module |
| JP2023103163A (en) * | 2022-01-13 | 2023-07-26 | ジョジアン ジンコ ソーラー カンパニー リミテッド | Solar cell module |
| JP2023103164A (en) * | 2022-01-13 | 2023-07-26 | ジョジアン ジンコ ソーラー カンパニー リミテッド | Solar cell module |
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| CN112038435A (en) * | 2020-09-28 | 2020-12-04 | 东方日升新能源股份有限公司 | Heterojunction battery assembly and preparation method thereof |
| JP7048808B1 (en) | 2021-08-27 | 2022-04-05 | 上海晶科緑能企業管理有限公司 | Solar cells and photovoltaic modules |
| JP7137031B1 (en) | 2021-08-27 | 2022-09-13 | 上海晶科緑能企業管理有限公司 | Solar cells and photovoltaic modules |
| JP2023033081A (en) * | 2021-08-27 | 2023-03-09 | 上海晶科緑能企業管理有限公司 | Photovoltaic cell and photovoltaic module |
| JP2023033050A (en) * | 2021-08-27 | 2023-03-09 | 上海晶科緑能企業管理有限公司 | Photovoltaic cell and photovoltaic module |
| JP2023158216A (en) * | 2021-10-29 | 2023-10-26 | 晶科能源股分有限公司 | Electrode structure, solar cell, and photovoltaic module |
| US12021157B2 (en) | 2021-10-29 | 2024-06-25 | Jinko Solar Co. Ltd. | Electrode structure, solar cell, and photovoltaic module |
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| JP2023103163A (en) * | 2022-01-13 | 2023-07-26 | ジョジアン ジンコ ソーラー カンパニー リミテッド | Solar cell module |
| JP7457768B2 (en) | 2022-01-13 | 2024-03-28 | ジョジアン ジンコ ソーラー カンパニー リミテッド | Solar Cell Module |
| JP7457767B2 (en) | 2022-01-13 | 2024-03-28 | ジョジアン ジンコ ソーラー カンパニー リミテッド | solar module |
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| JP2023103164A (en) * | 2022-01-13 | 2023-07-26 | ジョジアン ジンコ ソーラー カンパニー リミテッド | Solar cell module |
| CN114784124A (en) * | 2022-03-24 | 2022-07-22 | 环晟光伏(江苏)有限公司 | Solar cell, cell string and solar cell module |
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