CN210200746U - Main-grid-free solar cell and main-grid-free solar photovoltaic module - Google Patents
Main-grid-free solar cell and main-grid-free solar photovoltaic module Download PDFInfo
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- CN210200746U CN210200746U CN201921437279.4U CN201921437279U CN210200746U CN 210200746 U CN210200746 U CN 210200746U CN 201921437279 U CN201921437279 U CN 201921437279U CN 210200746 U CN210200746 U CN 210200746U
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 75
- 238000003466 welding Methods 0.000 claims abstract description 39
- 210000004027 cell Anatomy 0.000 claims description 105
- 239000010410 layer Substances 0.000 claims description 31
- 239000011241 protective layer Substances 0.000 claims description 19
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
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- 229910001152 Bi alloy Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- JWVAUCBYEDDGAD-UHFFFAOYSA-N bismuth tin Chemical compound [Sn].[Bi] JWVAUCBYEDDGAD-UHFFFAOYSA-N 0.000 claims description 3
- 238000009713 electroplating Methods 0.000 claims description 3
- 210000004457 myocytus nodalis Anatomy 0.000 claims description 3
- 229910001174 tin-lead alloy Inorganic materials 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims 2
- 238000005476 soldering Methods 0.000 claims 1
- 238000010248 power generation Methods 0.000 abstract description 5
- 238000013082 photovoltaic technology Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 229910052710 silicon Inorganic materials 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 5
- 229910052709 silver Inorganic materials 0.000 description 5
- 239000004332 silver Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
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- 229910001128 Sn alloy Inorganic materials 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0224—Electrodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
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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 no main grid solar wafer and no main grid solar photovoltaic module relates to the photovoltaic technology field, no main grid solar wafer and copper wire net welding form the battery plate, constitute battery layer preparation through single plate or the series connection of multiboard and obtain no main grid solar photovoltaic module, no main grid solar wafer has cancelled the main grid line, not only reduced the sheltering from to the battery wafer, increased the generating efficiency of battery wafer, and the cost is reduced, and the thin grid line of battery wafer widens through widening the structure at the welding department with the copper wire net and thereby has increased the welding performance of battery wafer, the edge of battery wafer avoids the welding between and the copper wire net through the breach portion thereby reduce the possibility of taking place the split piece; the copper wire net connects the cells in the same row in parallel and connects the cells in the adjacent row in series, so that the cells can be prevented from moving when being laminated, the power generation efficiency, the hidden crack resistance and the hot spot resistance of the photovoltaic module can be greatly improved, and the service life of the photovoltaic module can be greatly prolonged.
Description
Technical Field
The utility model belongs to the technical field of the photovoltaic technology and specifically relates to a no main grid solar wafer and no main grid solar PV modules.
Background
With the rising of energy prices, the development and utilization of new energy is a major subject of research in the energy field today. Because solar energy has the advantages of no pollution, no regional limitation, inexhaustible energy and the like, the research on solar power generation becomes a main direction for developing and utilizing new energy. The solar cell is a main mode for using solar energy by people at present, the high conversion efficiency of the module is promoted, the manufacturing cost of the module is continuously reduced, and the performance of the module is promoted, which is a necessary trend in the development of the industry.
At present, a conventional photovoltaic cell slice adopts a design from 2 main grid lines to 6 main grid lines, some component factories design 12 main grid lines, the industry is called as MBB cell slices, and then a welding strip and the main grid lines of the cell slices are welded to connect the cell slices in series to manufacture a photovoltaic component, and the conventional method has the following two problems:
(1) if adopt flat solder strip material, the main grid line is more, and is also more to the material of silver thick liquid, has improved the material cost of silver thick liquid greatly. If a circular welding material is adopted, the main grid on the cell saves the consumption of front silver paste, but actually sacrifices the welding performance, and changes the conventional surface welding into a small amount of spot welding. In the actual MBB welding process, the control requirement for the position of the circular welding wire is high, and the situation that the position is deviated and the alignment is difficult on the position of the point pad often occurs.
(2) The electric flux that the battery piece sent is drawn forth through the welding area on main grid line and the main grid line, and the electric current on every main grid line is bigger, and the producer needs the width of main grid line and the width grow that welds the area, is used for reducing the loss, and the main grid line leads to the battery piece to be shaded seriously with the width grow that welds the area, has reduced the conversion efficiency of whole battery piece, and traditional have main grid battery piece to use to weld the area welding in addition, then the battery piece in case produce latent subassembly overall efficiency that splits and can reduce fast, lead to the subassembly to become invalid completely or then scrap even.
SUMMERY OF THE UTILITY MODEL
The present inventor is directed to above-mentioned problem and technical demand, has provided a no main grid solar wafer and no main grid solar PV modules, the technical scheme of the utility model as follows:
the front of the solar cell sheet without the main grid is provided with transverse thin grid lines, the longitudinal two ends of the front of the solar cell sheet without the main grid are not provided with the thin grid lines at the crossed welding positions with the copper wire net to form notch parts, and the crossed welding positions of other thin grid lines with the copper wire net are provided with widened structures.
According to a further technical scheme, longitudinal anti-breaking grids are printed between the thin grid lines on the front side and the back side of the solar cell without the main grid.
The technical scheme is that the widening structure on each thin grid line is any one of a rectangle, a diamond, a circle and an ellipse.
The further technical scheme is that the structure of the back side of the solar cell without the main grid is the same as that of the front side of the solar cell to form a double-sided solar cell, or the back side of the solar cell without the main grid is printed with an aluminum paste layer and a plurality of main grid lines to form a single-sided solar cell.
A solar photovoltaic module without a main grid comprises a front protective layer, a battery layer, a back protective layer, a glue film layer and a junction box, wherein the front protective layer, the battery layer and the back protective layer are sequentially laminated from top to bottom; the solar cell layer comprises M cell plates, each cell plate comprises N rows of cell pieces, each row of cell pieces comprises P main grid-free solar cell pieces, a copper wire net is arranged between every two adjacent rows of cell pieces, one side of the copper wire net is in cross welding with a fine grid line on the front side of each cell piece in one row of cell pieces, the other side of the copper wire net is in cross welding with a grid line on the back side of each cell piece in the other adjacent row of cell pieces, and the P cell pieces in the same row are connected in parallel and the two adjacent rows of cell pieces are connected in series through the copper wire net; and the copper wire nets at the two ends of the M battery plates are connected through bus bars to form a series structure.
The further technical scheme is that a diode is connected in parallel in a circuit between two adjacent copper wire meshes in each battery plate, or a diode is connected in parallel in a circuit between every Q copper wire meshes.
The further technical scheme is that each diode is arranged in the junction box and connected with the battery layer, or is internally arranged between the front protective layer and the back protective layer.
The further technical scheme is that the thickness of the copper wire net in the overlapping area of every two rows of adjacent upper and lower battery pieces is smaller than that of other areas, and a concave structure is formed.
Its further technical scheme does, the copper wire net is formed through the welding by the copper wire that many vertically and horizontally staggered's surface has the coating, the coating is including electroplating and tin-containing alloy, tin-containing alloy includes tin-lead alloy and tin-bismuth alloy the beneficial technological effects of the utility model are that:
the application discloses a no-main-grid solar cell and a no-main-grid solar photovoltaic module manufactured based on the cell, wherein the no-main-grid solar photovoltaic module forms a cell plate by a no-main-grid solar cell and a copper wire mesh, and forms a cell layer by a single-plate or multi-plate series structure, the no-main-grid solar cell cancels the original design of a main grid line, so that the shielding of the cell is reduced, the power generation efficiency of the cell is increased, the use amount of silver paste is reduced, the cost of the cell is reduced, the welding performance of the cell is improved by widening a structure at the welding part of a thin grid line of the cell and the copper wire mesh, the welding between the edge of the cell and the copper wire mesh is avoided through a gap part, so that the possibility of cracking is reduced, and the performance of the cell is higher; the copper wire net is used for connecting the battery pieces in the same row in parallel and connecting the battery pieces in the adjacent row in series, so that the structure is simple, the position deviation of copper wires is avoided, more accurate alignment is realized, and in addition, the battery strings also form an integral plate structure and are not easy to move when being laminated; multiple battery pieces are connected in parallel through a copper net in the same row, and the structure can radically improve the capacity of equipment and realize the effect of reinforcement; the circuit structure adopts the structural design of combining parallel connection and series connection to form a plate, so that the internal circuits of the cells in the parallel connection direction are mutually communicated, the capability of resisting various failures of the assembly product in the application process is fundamentally improved, the automatic shunting and automatic balancing capability of internal current is improved, the power generation efficiency and the hot spot resistance of the photovoltaic assembly can be greatly improved, and the service life of the photovoltaic assembly is greatly prolonged.
Compared with the traditional process of welding different battery pieces through welding belt interconnection bars, thousands of contacts are arranged between the copper wire mesh and the thin grid lines, and the current conduction path at the silicon chip subfissure and microcrack parts is optimized, so that the loss caused by subfissure is greatly reduced. The diodes between the copper wire meshes can achieve the best hot spot resistance, and the photovoltaic module no longer has any potential risk of hot spots for shading.
The welding process of the copper wire mesh formed by the small-size thin and soft copper wires is suitable for the process of slicing the silicon wafer, the anti-subfissure capacity of the silicon wafer is improved greatly, a new thought and selection are provided for slicing the silicon wafer of the silicon wafer, and the possibility is provided for the continuous cost reduction of the industry.
In addition, the structure of the solar photovoltaic module without the main grid, disclosed by the application, completely eliminates the conventional string or plate typesetting, eliminates the fixed adhesive tape between strings/plates, eliminates the contribution of single welding of the bus bar, and realizes the simplest manufacturing process and flow in the industry.
Drawings
Fig. 1 is a 3-segment and 6-segment universal screen layout of a masterless solar cell disclosed in the present application.
Fig. 2 is an enlarged view of the structure a in fig. 1.
Fig. 3 is a block diagram of one cell panel of the presently disclosed backless solar photovoltaic module.
Fig. 4 is a side view of one cell panel of the presently disclosed backless solar photovoltaic module.
Figure 5 is another side view of one cell panel of the presently disclosed backless solar photovoltaic module.
Fig. 6 is another block diagram of one cell panel of the presently disclosed backless solar photovoltaic module.
Fig. 7 is an equivalent circuit configuration diagram of the configuration diagram shown in fig. 6.
Fig. 8 is a block diagram of the cell layers in the presently disclosed backless solar photovoltaic module.
Fig. 9 is another block diagram of the cell layers in the presently disclosed backless solar photovoltaic module.
Detailed Description
The following describes the embodiments of the present invention with reference to the accompanying drawings.
The application discloses a no main grid solar wafer, this no main grid solar wafer uses with the copper wire net cooperation, please refer to 3 shards and 6 shards general network territories shown in fig. 1 and as to the enlarged view of structure a department in fig. 1 shown in fig. 2, this no main grid solar wafer's front is provided with horizontal thin grid line 1, does not set up the main grid line. Thin grid lines are not arranged at the crossed welding positions of the two longitudinal ends of the front surface of the solar cell without the main grid and a copper wire mesh to form notch parts 2, the width and the length of each notch part 2 are set according to needs, and the width of each notch part is usually larger than the width of a copper wire in the copper wire mesh. The other thin grid lines of the solar cell without the main grid are provided with widened structures 3 at the crossed welding positions with the copper wire mesh, the width of the conventional thin grid lines is only 0.025 mm-0.035 mm, and the design of the widened structures 3 enables the thin grid lines 1 to form welding parts with the width larger than that of other areas at the crossed welding positions with the copper wire mesh, so that the welding between the copper wire mesh and the thin grid lines is firmer, and the welding performance is improved. The widening width of the thin grid line 1 by the widening structure 3 is designed according to actual needs, and the widening structure 3 is any one of a rectangle, a diamond, a circle and an ellipse, or can be processed into any shape according to actual needs. Longitudinal anti-breaking grids 4 are printed between the thin grid lines, and a plurality of anti-breaking grids 4 are usually arranged at intervals according to actual conditions. The utility model discloses a no main grid solar wafer of this kind of structure of this application has cancelled original main grid line design, has not only reduced sheltering from to the battery piece, has increased the generating efficiency of battery piece, reduce the use amount of silver thick liquid moreover, the battery piece cost has been reduced, moreover in this kind of structure of this application disclosure, widen structure 3 and increased the welding performance of battery piece, moreover the edge avoid through breach portion 2 and the welding between the copper mesh, can reduce the possibility of taking place the lobe of a leaf in practical application.
In the present application, the structure of the back surface of the solar cell without the main grid is the same as that of the front surface, that is, the solar cell without the main grid is formed as shown in fig. 1 and 2, and then the solar cell without the main grid is formed into a bifacial solar cell. Or, the back surface of the solar cell without the main grid can also adopt a conventional design with a plurality of main grid lines, namely, the back surface of the solar cell without the main grid is printed with an aluminum paste layer and a plurality of main grid lines, so that the solar cell without the main grid is formed into a single-sided solar cell.
This application still discloses no main grid solar wafer based on above-mentioned no main grid solar wafer, no main grid solar wafer includes the front protective layer, the battery layer, the back protective layer, glue film layer and terminal box, the front protective layer, battery layer and back protective layer stack gradually from last to bottom, glue film layer fill in the battery layer both sides, form the parcel and bond into a whole with front protective layer and back protective layer to the battery layer, during practical application, no main grid solar wafer outside still sets up the frame. The battery layer adopts plate structure design, and the battery layer includes M battery plates. Every battery plate mainly includes the above-mentioned no main grid solar wafer that this application disclosed and rather than the copper wire net that matches, and copper wire net is formed through the welding by the copper wire that many vertically and horizontally staggered's surface had the coating, and the coating is including electroplating and tin-containing alloy, and tin-containing alloy includes tin-lead alloy and tin-bismuth alloy, actually does corresponding adjustment to tin alloy according to different welding temperature. The cross section of copper wire can be circular, square or flat type, and the size of copper wire sets up to 0.1mm ~ 0.5mm, and conventional solder strip width is 0.8 ~ 1.1mm, adopts the copper mesh can significantly reduce the shading area to the battery piece, promotes the generating efficiency of battery piece.
Referring to fig. 3 and 4, each cell plate includes N rows of cells, each row of cells includes P cells having no main grid, and fig. 3 illustrates an example in which each row includes 6 cells 5. Be provided with copper wire net 6 between two adjacent rows of battery pieces about every, the width that copper wire net 6 is greater than battery piece 5 just is less than battery piece twice width, and copper wire net 6 covers two adjacent rows of battery pieces: for every two rows of adjacent battery pieces up and down, one side of the copper wire net 6 covers the front of one row of battery pieces, the other side covers the back of the other row of battery pieces, and the crossing of the copper wire net 6 and the thin grid line of the battery piece in contact is welded through the widening structure. Compared with the traditional process of welding different battery pieces through welding belt interconnection bars, thousands of contacts are arranged between the copper wire mesh and the thin grid lines, and the current conduction path at the silicon chip subfissure and microcrack parts is optimized, so that the loss caused by subfissure is greatly reduced. And the structure enables the copper wire net 6 to connect the P battery pieces in the same row in parallel and connect the battery pieces in the adjacent row in series. Even if one cell is shaded, electricity generated by the other cells in the same string with the cell can be shunted and flowed out through the copper wire mesh and the other cell rows in parallel, so that the actual power generation amount of the photovoltaic module can be increased.
As shown in fig. 4, in the structure formed by laying the battery pieces 5 and the copper wire mesh 6, an overlapping portion exists between every two adjacent rows of the battery pieces 5, and in order to reduce damage to the battery pieces at the overlapping portion, please refer to fig. 5, the thickness of the copper wire mesh 6 in the overlapping region of every two adjacent rows of the battery pieces 5 is smaller than that in other regions, and a concave structure 60 is formed.
For each cell block, a diode 7 is connected in parallel in the circuit between two adjacent copper wire meshes 6, as shown in figure 3, or diodes 7 are connected in parallel in the circuit between every Q copper wire meshes 6, for example, a diode 7 is connected in parallel in the circuit of every 3 copper wire meshes 6, as shown in fig. 6, the structure of fig. 6 forms an equivalent circuit structure as shown in fig. 7, each cell 5 generates electricity equivalent to a power source, the diode 7 forms a parallel structure at both ends of the power source for protection, therefore, the battery pieces between the two copper wire meshes 6 connected with the diode 7 are protected, after the whole row of the diode is shaded, the diode 7 can easily respond to the shaded area to separate the battery pieces, only a small part of the battery pieces are bypassed, most of the battery pieces can normally generate electricity, the generating efficiency of the photovoltaic module is improved, and the problem that the shaded battery pieces generate hot spots is prevented to the maximum extent to cause damage of the battery pieces or reduce the service life of the photovoltaic module. The diodes 7 can be externally arranged in the junction box and connected with the battery layer, or can be directly arranged between the front protective layer and the back protective layer, so that the cost of the junction box is reduced. The specific position of the diode can be arranged at the position of a solar cell of the photovoltaic module, and can also be arranged at the side edge of the solar cell of the photovoltaic module.
The cell sheet layer in the solar photovoltaic module without the main grid can be formed by a single cell plate, and in practical application, 1/6 cell sheets are adopted, the cell plate is set into 6 rows of cell sheets, that is, each row of cell sheets comprises 6 cell sheets, and the current led out in this way can be consistent with that of a conventional module.
The cell sheet layer in the no main grid solar photovoltaic module of this application can also be established ties by a plurality of battery plates and form, and also M is more than or equal to 2, and then the copper wire net at the both ends of M battery plates links to each other through busbar 8 and forms the tandem structure, and busbar 8 can realize being photovoltaic solder strip, electrically conductive adhesive tape or conducting resin. For example, as shown in fig. 8, a design scheme that copper wire nets at two ends of 2 battery plates are connected in series through bus bars 8 to form a battery layer is adopted, 1/3 battery pieces are divided, each battery plate is provided with 3 rows of battery pieces, the battery pieces in each battery plate are connected by the copper wire nets, and diodes 7 are installed between the copper wire nets. For example, as shown in fig. 9, a design scheme that copper wire nets at two ends of 4 battery plates are connected in series through a bus bar 8 to form a battery layer is adopted, 1/3 battery pieces are divided, each battery plate is provided with 3 rows of battery pieces, the battery pieces in each battery plate are connected by the copper wire nets, and diodes 7 are installed between the copper wire nets.
What has been described above is only a preferred embodiment of the present application, and the present invention is not limited to the above embodiments. It is to be understood that other modifications and variations directly derivable or suggested by those skilled in the art without departing from the spirit and scope of the present invention are to be considered as included within the scope of the present invention.
Claims (9)
1. The solar cell without the main grid is matched with a copper wire net for use, and is characterized in that transverse thin grid lines are arranged on the front face of the solar cell without the main grid, no thin grid line is arranged at the crossed welding position of the longitudinal two ends of the front face of the solar cell without the main grid and the copper wire net to form a notch part, and a widening structure is arranged at the crossed welding position of each other thin grid line and the copper wire net.
2. The solar cell of claim 1, wherein the front and back sides of the solar cell are printed with longitudinal break-preventing grids between the thin grid lines.
3. The solar cell sheet of claim 1 or 2, wherein the widened structure on each of the thin grid lines is any one of rectangular, diamond-shaped, circular and oval.
4. The solar cell sheet without the main grid according to claim 1 or 2, wherein the structure of the back surface of the solar cell sheet without the main grid is the same as that of the front surface of the solar cell sheet without the main grid to form a double-sided solar cell sheet, or the back surface of the solar cell sheet without the main grid is printed with an aluminum paste layer and a plurality of main grid lines to form a single-sided solar cell sheet.
5. The solar photovoltaic module without the main grid is characterized by comprising a front protective layer, a battery layer, a back protective layer, a glue film layer and a junction box, wherein the front protective layer, the battery layer and the back protective layer are sequentially laminated from top to bottom; the cell layer comprises M cell plates, each cell plate comprises N rows of cell plates, each row of cell plates comprises P main grid-free solar cell plates according to any one of claims 1-4, a copper wire net is arranged between every two adjacent rows of cell plates, one side of the copper wire net is welded with the thin grid lines on the front side of each cell plate in one row of cell plates in a crossed manner, the other side of the copper wire net is welded with the grid lines on the back side of each cell plate in the other adjacent row of cell plates in a crossed manner, and the copper wire net connects the P cell plates in the same row in parallel and connects the cell plates in the two adjacent rows in series; and the copper wire nets at the two ends of the M battery plates are connected through bus bars to form a series structure.
6. The maingrid-less solar photovoltaic module of claim 5, wherein diodes are connected in parallel in circuit between two adjacent copper wire meshes in each of the cell panels, or in parallel in circuit between every other Q copper wire meshes.
7. The solar photovoltaic module of claim 6, wherein each diode is disposed in the junction box and connected to the cell layer or is interposed between the front and back protective layers.
8. The solar photovoltaic module of claim 5, wherein the thickness of the copper wire mesh in the overlapping area of every two adjacent rows of the upper and lower cells is smaller than that of the other areas, and the copper wire mesh forms a concave structure.
9. The solar photovoltaic module of any of claims 5 to 8, wherein the copper mesh is formed by soldering a plurality of criss-crossed copper wires with a plating layer on the surface, wherein the plating layer comprises electroplating and tin-containing alloys, and the tin-containing alloys comprise tin-lead alloys and tin-bismuth alloys.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921437279.4U CN210200746U (en) | 2019-08-30 | 2019-08-30 | Main-grid-free solar cell and main-grid-free solar photovoltaic module |
| PCT/CN2020/111037 WO2021037020A1 (en) | 2019-08-30 | 2020-08-25 | Main-gate-free solar cell and main-gate-free solar photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921437279.4U CN210200746U (en) | 2019-08-30 | 2019-08-30 | Main-grid-free solar cell and main-grid-free solar photovoltaic module |
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| CN210200746U true CN210200746U (en) | 2020-03-27 |
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| CN201921437279.4U Active CN210200746U (en) | 2019-08-30 | 2019-08-30 | Main-grid-free solar cell and main-grid-free solar photovoltaic module |
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| WO (1) | WO2021037020A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111883615A (en) * | 2020-08-01 | 2020-11-03 | 苏州沃特维自动化系统有限公司 | Manufacturing process of heterojunction battery assembly |
| CN111883616A (en) * | 2020-08-01 | 2020-11-03 | 苏州沃特维自动化系统有限公司 | Manufacturing process of photovoltaic cell efficient assembly |
| WO2021037020A1 (en) * | 2019-08-30 | 2021-03-04 | 苏州携创新能源科技有限公司 | Main-gate-free solar cell and main-gate-free solar photovoltaic module |
| CN112750916A (en) * | 2021-01-18 | 2021-05-04 | 无锡鼎森茂科技有限公司 | Novel processing method of metal mesh for photovoltaic module |
| CN117238985A (en) * | 2023-11-16 | 2023-12-15 | 浙江晶科能源有限公司 | Solar cell and photovoltaic module |
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| CN105489675A (en) * | 2014-09-18 | 2016-04-13 | 朱永生 | Novel photovoltaic cell module and manufacturing method for same |
| US20180358491A1 (en) * | 2017-06-12 | 2018-12-13 | The Boeing Company | Solar cell array with bypassed solar cells |
| CN107170844A (en) * | 2017-07-10 | 2017-09-15 | 苏州腾晖光伏技术有限公司 | A kind of solar battery sheet and photovoltaic module without main grid |
| CN108598191A (en) * | 2018-06-11 | 2018-09-28 | 泰州隆基乐叶光伏科技有限公司 | A kind of more main grid high-efficiency battery pieces of compatible half battery |
| CN210200746U (en) * | 2019-08-30 | 2020-03-27 | 无锡携创新能源科技有限公司 | Main-grid-free solar cell and main-grid-free solar photovoltaic module |
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2019
- 2019-08-30 CN CN201921437279.4U patent/CN210200746U/en active Active
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021037020A1 (en) * | 2019-08-30 | 2021-03-04 | 苏州携创新能源科技有限公司 | Main-gate-free solar cell and main-gate-free solar photovoltaic module |
| CN111883615A (en) * | 2020-08-01 | 2020-11-03 | 苏州沃特维自动化系统有限公司 | Manufacturing process of heterojunction battery assembly |
| CN111883616A (en) * | 2020-08-01 | 2020-11-03 | 苏州沃特维自动化系统有限公司 | Manufacturing process of photovoltaic cell efficient assembly |
| CN112750916A (en) * | 2021-01-18 | 2021-05-04 | 无锡鼎森茂科技有限公司 | Novel processing method of metal mesh for photovoltaic module |
| CN117238985A (en) * | 2023-11-16 | 2023-12-15 | 浙江晶科能源有限公司 | Solar cell and photovoltaic module |
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| WO2021037020A1 (en) | 2021-03-04 |
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