CN110739356A - large-size solar cell photovoltaic module - Google Patents
large-size solar cell photovoltaic module Download PDFInfo
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- CN110739356A CN110739356A CN201911147162.7A CN201911147162A CN110739356A CN 110739356 A CN110739356 A CN 110739356A CN 201911147162 A CN201911147162 A CN 201911147162A CN 110739356 A CN110739356 A CN 110739356A
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- 238000003466 welding Methods 0.000 claims abstract description 49
- 239000011521 glass Substances 0.000 claims abstract description 24
- 229910000679 solder Inorganic materials 0.000 claims description 47
- 238000005520 cutting process Methods 0.000 claims description 4
- 239000005357 flat glass Substances 0.000 claims description 3
- 239000000565 sealant Substances 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 description 27
- 238000005516 engineering process Methods 0.000 description 5
- 239000003292 glue Substances 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005219 brazing Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
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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
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
- H01L31/0508—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module the interconnection means having a particular shape
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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 invention discloses large-size solar cell photovoltaic modules, which comprise upper glass, a transparent EVA front film, a solar cell sheet layer, an EVA rear film, a back plate or photovoltaic glass and the like which are sequentially overlapped from top to bottom and laminated, and are characterized in that the side length size range of the solar cell sheet is 160-220mm, the solar cell sheet is a whole sheet or is cut into 2-10 small sheets by the whole sheet, each solar cell sheet is provided with 6-30 main grid lines, and then the solar cell sheet layer is formed by connecting welding strips in series and/or in parallel, the cross section of each welding strip is circular, the diameter size of each circular welding strip is 0.2-0.6mm, and the larger the size of each welding strip is, the smaller the required optimal number of the main grids is.
Description
Technical Field
The invention belongs to the technical field of solar energy, and particularly relates to large-size solar cell photovoltaic modules.
Background
The conventional common solar module is a whole or a whole solar module is cut into half by laser, the size of the solar module is 156.75 × 156.75mm, then the solar module is connected in series or in series-parallel to form a circuit, along with the continuous improvement of the market demand for high-power modules, under the condition that the improvement effect of the conventional battery technology is gradually limited, the area of a silicon wafer is increased, a large silicon wafer is introduced, and the short paths are gradually changed into shortcuts for rapidly improving the power and the efficiency of the module, but the size of the silicon wafer is enlarged, and various photoelectric losses are increased theoretically when the battery is prepared.
However, the highest cell efficiency is obtained, and it does not mean that the optimum power is obtained after the module design is matched, because the solder strip shading and resistance of the module and the module layout design also affect the module power, such as increasing the number of main grids, and according to the resistance calculation formula, the solder strip resistance can be reduced, but at the same time, the shading area is also increased, so taste increases the number of main grids rather than being compensated, for example, after the cell is cut into halves, the current decreases by halves, the resistance loss influence brought by the solder strip becomes integral 1/4, relatively, the proportion occupied by the shading loss influence brought by the solder strip increases, so the solder strip size and the main grid number design suitable for the whole piece is no longer suitable for the half-piece module, and the same assumption is that the cell is cut into 3 parts, the current becomes original 1/3, the resistance loss becomes integral 1/9, which means that the loss resistance occupies the module package loss step and the shading loss of the solder strip increases relatively.
Therefore, as the size of the silicon chip becomes larger and various overlay techniques are applied, the number of main gates and the size of the solder strips need to be redesigned. More laminated sheets and combined sheets are cut aiming at half-sheet and whole solar cell sheets, the number of the required main grids and the size of the solder strip are different, and the corresponding process technological requirements are also different. Therefore, for the improvement of the cell process, the corresponding design of the assembly is needed, so that the efficient cell ultimately forms the efficient photovoltaic assembly.
Disclosure of Invention
In order to solve the problems, the invention provides large-size solar cell photovoltaic modules, which realize the maximization of module power and reduce production cost by optimizing the number of main grids of the cells and the size of solder strips.
Therefore, the invention adopts the following technical scheme:
large-size solar cell photovoltaic modules comprise upper glass (1), a transparent EVA front film (2), a solar cell sheet layer (3), an EVA rear film (4), a back plate or photovoltaic glass (5) which are sequentially overlapped and laminated from top to bottom, wherein the upper glass (1), the upper transparent EVA film (2), the solar cell sheet layer (3), the EVA rear film (4) and the back plate or back plate glass (5) are bonded together at through a laminating machine to form a module body (100), the upper glass (1) is coated glass and is a light receiving surface, a frame (7) is arranged on the periphery of the winding module body (100), the frame (7) and the module body are bonded through a sealant (6), the solar cell sheet layer (3) is formed by connecting a plurality of solar cells (101) in series and/or parallel, a bus bar (9) and a solder strip (10) are arranged on the surface of the solar cells (101), a rectangular back plate or back plate glass (5) is provided with a junction box (9) and a solder strip (10), the bus bar (9) and the rectangular junction box (7) passes through a preset junction box (8), the back plate or the glass (5), the junction box (9) is connected with the solar cells, the solar cell is characterized in that the solar cell by the solar cell strips (7) and the solar cell strips (7) are connected in that the solar cell strips (7) and the solar cell strips, the solar cell strips are connected in series, the solar cell strips are smaller than the solar cell strips (10) and the solar cell strips, the solar cell strips are formed by the solar cell strips, the solar cell strips.
, the thicknesses of the transparent EVA front film (2) and the EVA rear film (4) are controlled to be 0.1-0.3 mm, the effect is optimal, the problems of hidden cracking and glue overflow can be effectively avoided, such as too thick glue film and easy glue overflow, and such as too thin glue film can easily cause the cell to break or hidden cracking.
, the solar cell is an integral piece with side length of 166mm, the number of the main grids is 6-25, the diameter size of the circular welding strip is 0.3-0.6 mm, the larger the diameter size of the welding strip is, the less the number of the required optimal main grids is, the number of the main grids required by the integral piece assembly is relatively large, the size of the welding strip is relatively thick, and the number of the required main grids is reduced when the cell is cut into 2-10 pieces to be used as the assembly.
As specific embodiments, the diameter size of the circular solder strip is 0.55mm, the number of the main grids is 10, or the diameter size of the circular solder strip is 0.50mm, the number of the main grids is 11, or the diameter size of the circular solder strip is 0.45mm, the number of the main grids is 12, or the diameter size of the circular solder strip is 0.40mm, the number of the main grids is 14, or the diameter size of the circular solder strip is 0.35mm, the number of the main grids is 17, or the diameter size of the circular solder strip is 0.32mm, and the number of the main grids is 19.
As specific embodiments, the solar cell sheet is a small sheet cut into 2 equal parts by whole sheets with the side length of 166mm, the number of the main grids is 6-20, the diameter size of the circular solder strip is 0.2-0.4 mm, and the larger the size of the solder strip is, the less the number of the main grids needs to be optimized.
As specific embodiments, the diameter size of the circular solder strip is 0.40mm, and the number of the main grids is 9, or the diameter size of the circular solder strip is 0.35mm, and the number of the main grids is 10, or the diameter size of the circular solder strip is 0.32mm, and the number of the main grids is 11, or the diameter size of the circular solder strip is 0.29mm, and the number of the main grids is 12, or the diameter size of the circular solder strip is 0.25mm, and the number of the main grids is 14.
As specific embodiments, the solar cell sheet is a small sheet cut into 2 equal parts by whole sheets with the side length of 210mm, the number of the main grids is 6-29, the diameter size of the circular solder strip can be 0.25-0.55 mm, and the thicker the solder strip size, the less the optimal number of the main grids is needed.
As specific embodiments, the diameter size of the circular welding strip is 0.50mm, the number of the main grids is 11, the diameter size of the circular welding strip is 0.45mm, the number of the main grids is 12, the diameter size of the circular welding strip is 0.40mm, the number of the main grids is 13, the diameter size of the circular welding strip is 0.35mm, the number of the main grids is 15, the diameter size of the circular welding strip is 0.32mm, the number of the main grids is 17, the diameter size of the circular welding strip is 0.29mm, the number of the main grids is 19, or the diameter size of the circular welding strip is 0.25mm, and the number of the main grids is 22.
As specific embodiments, the solar cell sheet is a small sheet cut into 3 equal parts by whole sheets with the side length of 210, the number of the main grids is 6-22, the diameter belt size of the circular welding is 0.2mm-0.4mm, and the thicker the welding belt size, the less the optimal number of the main grids is needed.
As specific embodiments, the diameter size of the circular solder strip is 0.40mm, and the number of the main grids is 11, or the diameter size of the circular solder strip is 0.35mm, and the number of the main grids is 12, or the diameter size of the circular solder strip is 0.32mm, and the number of the main grids is 13, or the diameter size of the circular solder strip is 0.29mm, and the number of the main grids is 14, or the diameter size of the circular solder strip is 0.25mm, and the number of the main grids is 16.
Compared with the prior art, the invention comprehensively considers the design of the battery and the assembly structure, so that the main grid of the welding strip and the welding strip are optimally matched and combined, the current collection capability of the grid line is effectively increased, the resistance loss is reduced, less shading loss is caused, the optimal optical and electrical utilization rate is obtained, the power of the assembly on the large-size battery is maximized, and the hidden crack probability is effectively reduced by reasonably setting the thickness of the EVA adhesive film. The high-efficiency battery is finally a high-efficiency battery assembly.
Drawings
Fig. 1-3 are schematic structural views of the present invention, wherein fig. 1 is a schematic sectional view, fig. 2 is a schematic front view of the device, and fig. 3 is a schematic back view of the device;
FIG. 4 is a power diagram of the components of embodiment 1 of the present invention;
FIG. 5 is a power diagram of the components of embodiment 2 of the present invention;
FIG. 6 is a power diagram of the components of embodiment 3 of the present invention;
FIG. 7 is a power diagram of the components of embodiment 4 of the present invention;
wherein: 1 is last glass, 2 is transparent EVA front film, 3 is the solar wafer layer, 4 is the membrane behind the EVA, 5 is backplate or backplate glass, 6 is sealed glue, 7 is the frame, 8 is the terminal box, 9 is the busbar, 10 is the solder strip, 100 is the subassembly body, 101 is the small cell.
Detailed Description
Example 1
As shown in FIGS. 1-3, the large-size solar cell photovoltaic modules provided by the invention comprise an upper glass 1, a transparent EVA front film 2, a solar cell sheet layer 3, an EVA rear film 4, a back panel or photovoltaic glass 5 which are sequentially stacked from top to bottom and laminated, wherein the upper glass 1, the upper transparent EVA film 2, the solar cell sheet layer 3, the EVA rear film 4, and the back panel or back panel glass 5 are bonded together at by a laminator to form a module body 100, the upper glass 1 is coated glass and is a light-receiving surface, a frame 7 is arranged on the periphery of the module body 100, and the frame 7 and the module body are bonded by a sealant 6, in the embodiment, the frame 7 is an aluminum frame.
The solar cell sheet layer 3 is formed by connecting a plurality of solar cells 101 in series and/or in parallel, a bus bar 9 and a solder strip 10 are arranged on the surface of each solar cell 101, a junction box 8 is arranged on the back plate or the back glass 5, the bus bar 9 penetrates through a hole preset in the back plate or the glass 5 to be connected with the junction box 8, and the bus bar 9 is connected with the solder strip 10 to enable each solar cell 101 to form a finished circuit loop.
Specifically, the solar cell is a small piece formed by cutting a cell piece with the side length size ranging from 166mm into 2 equal parts, and a plurality of small pieces are connected into a matrix through welding strips 10 to form a large-size assembly with parallel and series combination.
If only the battery is considered, the number of the selectable main grids is designed to be 6-16, and the number of the preferential grid lines ranges from 6-9 in terms of cost and complexity of engineering process; if the cell design is not considered, only the component design is considered, and in order to obtain the minimum optical and electrical loss, when a circular copper welding strip with the diameter size of 0.4mm is adopted, the number of the selectable main grid designs is 5-13, and the preferred range is 5-8; however, after combining the optical and electrical properties of the assembly and cell, the number of the optional main grids is 7-12, the preferred number of the main grids is 7-9, and the power of the assembly can be maximized in 9 designs.
When using circular braze strips with a diameter size of 0.35mm, the number of alternative primary grid designs is 7-16, preferably in the range of 7-10, if only the component design is considered, but after combining the optical and electrical properties of the component and the cell, the number of alternative primary grids is 7-14, preferably in the range of 7-10, and the power of the component can be maximized at 10 designs.
When using circular braze strips with a diameter size of 0.32mm, the number of alternative primary grid designs is 8-18, preferably in the range of 8-12, if only the component design is considered, but after combining the optical and electrical properties of the component and the cell, the number of alternative primary grids is 8-15, preferably in the range of 8-11, and the power of the component can be maximized at 11 designs.
When using circular braze strips with a diameter size of 0.29mm, the number of alternative primary grid designs is 10-21, preferably in the range of 10-14, if only the component design is considered, but after combining the optical and electrical performance of the component and the cell, the number of alternative primary grids is 9-16, preferably in the range of 9-12, and the power of the component can be maximized at 12 designs.
When using circular braze strips with a diameter size of 0.25mm, the number of alternative primary grid designs is 12-27, preferably in the range of 12-18, if only the component design is considered, but after combining the optical and electrical performance of the component and the cell, the number of alternative primary grids is 11-19, preferably in the range of 11-14, and the power of the component can be maximized at 14 designs.
The specific parameter design in this example is as follows in table 1:
through practical tests, in this embodiment, the power of the component obtained by setting different numbers of main gates and sizes of solder strips is as shown in fig. 4.
Example 2:
the present embodiment is different from embodiment 1 in that:
the solar cell 101 is a large-sized module formed by cutting a cell with a side length in the range of 210mm into 3 equal parts, and connecting a plurality of the small parts into a matrix through a welding strip 10 to form a parallel and series combination.
If only the battery is considered, the number of the selectable main grids is designed to be 8-21, and the number of the preferential grid lines ranges from 8-13 in terms of cost and complexity of engineering process; if the cell design is not considered and only the module design is considered, in order to obtain the minimum optical and electrical losses, when a circular brazing tape with a diameter size of 0.4mm is used, the number of the optional main grids is 6-14, and the preferred range is 6-9, but after the optical and electrical properties of the module and the cell are combined, the number of the optional main grids is 8-15, and the preferred range is 8-11, and the module power can be maximized in the 11-grid design.
When using circular braze strips with a diameter size of 0.35mm, the number of alternative primary grid designs is 8-17, preferably in the range of 8-11, if only the component design is considered, but after combining the optical and electrical properties of the component and the cell, the number of alternative primary grids is 9-16, preferably in the range of 9-12, and the power of the component can be maximized at 12 designs.
When using circular braze strips with a diameter size of 0.32mm, the number of alternative primary grid designs is 9-20, preferably in the range of 9-13, if only the component design is considered, but after combining the optical and electrical properties of the component and the cell, the number of alternative primary grids is 10-18, preferably in the range of 10-13, and the power of the component can be maximized at 13 designs.
When using circular braze strips with a diameter size of 0.29mm, the number of alternative primary grid designs is 10-23, preferably in the range of 10-15, if only the component design is considered, but after combining the optical and electrical properties of the component and the cell, the number of alternative primary grids is 11-19, preferably in the range of 11-14, and the power of the component can be maximized at 14 designs.
When using circular braze strips with a diameter size of 0.25mm, the number of alternative primary grid designs is 13-29, preferably in the range of 13-19, if only the component design is considered, but after combining the optical and electrical performance of the component and the cell, the number of alternative primary grid designs should be 12-22, preferably in the range of 12-16, with the component power being maximized in the 16 designs.
The specific parameter design in this example is as follows in table 2:
through practical tests, in this embodiment, the power of the component obtained by setting different numbers of main gates and sizes of solder strips is as shown in fig. 5.
Example 3:
the present embodiment is different from embodiment 1 in that:
the solar cell 101 is a large-sized module formed by cutting a cell with a side length in the range of 210mm into 2 equal parts, and connecting a plurality of the small parts into a matrix through a welding strip 10 to form a parallel and series combination.
If only the battery is considered, the number of the optional main grids is designed to be 8-21, and the number of the preferential grid lines ranges from 8-13 in terms of cost and complexity of engineering process; with a 0.5mm circular braze tape, after integrating the optical and electrical performance of the assembly and cell, the number of primary grids that can be selected should be 8-15, with a preferred range of primary grid numbers being 8-11, and with a 11-grid design, the assembly power can be maximized, as can be seen in the table below and in fig. 6.
With 0.45mm round braze strips, the optional primary grid design should be 9-16, with a preferred number of primary grids ranging from 9-12, after combining the optical and electrical performance of the assembly and cell, and with a 12-grid design, the assembly power can be maximized.
With 0.40mm round braze strips, the optional primary grid design should be 10-18, with a preferred number of primary grids in the range of 10-13, after combining the optical and electrical performance of the assembly and cell, and with a 13-grid design, the assembly power can be maximized.
With 0.35mm round braze strips, the optional primary grid design should be 12-20, with a preferred number of primary grids ranging from 12-15, after combining the optical and electrical performance of the assembly and cell, and with a 15-grid design, the assembly power can be maximized.
With a 0.32mm circular braze strip, after combining the optical and electrical performance of the assembly and cell, the optional primary grid design should be 13-22, with a preferred number of primary grids ranging from 13-17, and with a 17-grid design, the assembly power can be maximized.
With a 0.29mm circular braze strip, the optional primary grid design should be 14-25, with a preferred number of primary grids ranging from 14-19, after combining the optical and electrical performance of the assembly and cell, and the assembly power can be maximized with a 19-grid design.
With a 0.25mm circular braze strip, after combining the optical and electrical performance of the assembly and cell, the optional primary grid design should be 17-29, with a preferred number of primary grids ranging from 17-22, and with a 22-grid design, the assembly power can be maximized.
The specific parameter design in this example is as follows in table 3:
through practical tests, in this embodiment, the power of the component obtained by setting different numbers of main gates and sizes of solder strips is as shown in fig. 6.
Example 4:
the present embodiment is different from embodiment 1 in that:
the solar cell 101 is a 166 mm-166 mm whole piece and is connected into a matrix by welding strips to form a large-size module which is combined in parallel and series.
If only the battery is considered, the number of the optional main grids is designed to be 6-16, and the number of the preferential grid lines ranges from 6-9 in terms of cost and complexity of engineering process; if the cell design is not considered and only the module design is considered, in order to obtain the minimum optical and electrical loss, when the 0.55mm circular brazing strip is adopted, the number of the optional main grids is 7-15, and the preferred range is 7-10, but after the optical and electrical performances of the module and the cell are combined, the number of the optional main grids is 8-13, and the preferred range is 8-10, and the module power can be maximized in 10 designs.
When using 0.5mm round braze strips, the number of alternative primary grid designs is 9-17, preferably in the range of 9-12, if only the module design is considered, but after combining the optical and electrical performance of the module and the battery, the number of alternative primary grid designs should be 9-14, preferably in the range of 9-11, and the module power can be maximized at 11 designs.
When 0.45mm circular braze strips are used, if only the component design is considered, the number of the optional main grids is 10-19, and the preferred range is 10-14, but after the optical and electrical properties of the component and the battery are combined, the number of the optional main grids is 10-16, the preferred range of the main grids is 10-12, and the power of the component can be maximized in 12 designs.
When using 0.4mm round braze strips, the number of alternative primary grid designs is 12-23, preferably in the range of 12-17, if only the module design is considered, but after combining the optical and electrical performance of the module and the battery, the number of alternative primary grid designs should be 11-19, preferably in the range of 11-14, and the module power can be maximized at 14 designs.
When using 0.35mm round braze strips, the number of alternative primary grid designs is 16-29, preferably in the range of 16-21, if only the module design is considered, but after combining the optical and electrical performance of the module and the cell, the number of alternative primary grid designs should be 13-22, preferably in the range of 13-17, and the module power can be maximized at 17 designs.
When using 0.32mm round braze strips, the number of alternative primary grid designs is 19-33, preferably in the range of 19-24, if only the module design is considered, but after combining the optical and electrical performance of the module and cell, the number of alternative primary grid designs should be 15-25, preferably in the range of 15-19, and the module power can be maximized at 19 designs.
The specific parameter design in this example is as follows in table 3:
through practical tests, in this embodiment, the power of the component obtained by setting different numbers of main gates and sizes of solder strips is as shown in fig. 7.
It should be noted that the specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims. According to the arrangement scheme of the number of the main grids and the size of the welding strips, provided by the invention, various arrangements can be carried out so as to achieve the highest efficiency of the assembly. In the invention, the solder strip can also be circular, rectangular or triangular.
Claims (10)
- The photovoltaic module comprises upper glass (1), a transparent EVA front film (2), a solar cell sheet layer (3), an EVA rear film (4), a back plate or photovoltaic glass (5), wherein the upper glass (1), the upper transparent EVA film (2), the solar cell sheet layer (3), the EVA rear film (4) and the back plate or back plate glass (5) are sequentially laminated from top to bottom to form a module body (100) through bonding of a laminating machine on , the upper glass (1) is coated glass and is a light receiving surface, a frame (7) is arranged on the periphery of the winding module body (100), the frame (7) and the module body are bonded through a sealant (6), the solar cell sheet layer (3) is formed by connecting a plurality of solar cells (101) in series and/or in parallel, a bus bar (9) and a solder strip (10) are arranged on the surface of the solar cells (101), a junction box (8) is arranged on the back plate or back plate (5), the bus bar (9) penetrates through a preset connection range of the back plate or glass junction box (5) to connect the bus bar (8), the bus bar (9) is larger, the bus bar (10) is connected with the length, the bus bar (9), the bus bar (2) is larger, the solar cells (10), the solar cells are connected with the solar cells, the solar cell sheet (2) and the solar cell sheet (2) is a circular circuit, the solar cell (2) and the solar cell (2) is formed by cutting, the solar cell (2) is characterized in series, the solar cell (2) and the solar cell (2) is formed by the solar cell (2) and the solar cell sheet (2) and the solar cell (2) is 0-10) and the solar cell (2.
- 2. The large scale solar cell photovoltaic module of claim 1, wherein: the thicknesses of the transparent EVA front film (2) and the EVA rear film (4) are controlled as follows: the height of the solder strip is added by 0.1 to 0.3 mm.
- 3. The large scale solar cell photovoltaic module of claim 2, wherein: the solar cell is an integral piece with the side length of 166mm, the number of the main grids is 6-25, the diameter size of the circular welding strip is 0.3-0.6 mm, and the larger the diameter size of the welding strip is, the smaller the number of the required optimal main grids is.
- 4. The large scale solar cell photovoltaic module of claim 3, wherein: the diameter size of the circular welding strip is 0.55mm, and the number of the main grids is 10; or the diameter size of the circular welding strip is 0.50mm, and the number of the main grids is 11; or the diameter of the circular welding strip is 0.45mm, and the number of the main grids is 12; or the diameter size of the circular welding strip is 0.40mm, and the number of the main grids is 14; or the diameter size of the circular welding strip is 0.35mm, and the number of the main grids is 17; or the diameter size of the circular welding strip is 0.32mm, and the number of the main grids is 19.
- 5. A large-size solar cell photovoltaic module as set forth in claim 2, wherein the solar cell is a 2-part small piece cut from whole pieces with side length of 166mm, the number of the main grids is 6-20, the diameter of the circular solder strip is 0.2-0.4 mm, and the larger the size of the solder strip is, the less the number of the main grids is required to be optimized.
- 6. The large scale solar cell photovoltaic module of claim 5, wherein: the diameter size of the circular welding strip is 0.40mm, and the number of the main grids is 9; or the diameter of the circular welding strip is 0.35mm, and the number of the main grids is 10; or the diameter size of the circular welding strip is 0.32mm, and the number of the main grids is 11; or the diameter size of the circular welding strip is 0.29mm, and the number of the main grids is 12; or the diameter size of the circular welding strip is 0.25mm, and the number of the main grids is 14.
- 7. A large-size solar cell photovoltaic module as set forth in claim 2, wherein the solar cell is a 2-part small piece cut from whole pieces with the side length of 210mm, the number of the main grids is 6-29, the diameter of the circular solder strip can be 0.25-0.55 mm, and the thicker the solder strip, the less the optimal number of the main grids is needed.
- 8. The large scale solar cell photovoltaic module of claim 7, wherein: the diameter size of the circular welding strip is 0.50mm, and the number of the main grids is 11; or the diameter of the circular welding strip is 0.45mm, and the number of the main grids is 12; or the diameter size of the circular welding strip is 0.40mm, and the number of the main grids is 13; or the diameter size of the circular welding strip is 0.35mm, and the number of the main grids is 15; or the diameter size of the circular welding strip is 0.32mm, and the number of the main grids is 17; or the diameter size of the circular welding strip is 0.29mm, and the number of the main grids is 19; or the diameter size of the circular welding strip is 0.25mm, and the number of the main grids is 22.
- 9. A large-size solar cell photovoltaic module as set forth in claim 2, wherein the solar cell is a small piece cut into 3 equal parts from whole pieces with the side length of 210, the number of the main grids is 6-22, the diameter of the circular solder is 0.2mm-0.4mm, and the thicker the solder strip is, the less the number of the main grids is required to be optimized.
- 10. The large scale solar cell photovoltaic module of claim 9, wherein: the diameter size of the circular welding strip is 0.40mm, and the number of the main grids is 11; or the diameter size of the circular welding strip is 0.35mm, and the number of the main grids is 12; or the diameter size of the circular welding strip is 0.32mm, and the number of the main grids is 13; or the diameter of the circular welding strip is 0.29mm, and the number of the main grids is 14; or the diameter size of the circular welding strip is 0.25mm, and the number of the main grids is 16.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911147162.7A CN110739356A (en) | 2019-11-21 | 2019-11-21 | large-size solar cell photovoltaic module |
| CN202010399022.5A CN111370505A (en) | 2019-09-30 | 2020-05-12 | Photovoltaic module suitable for solar cell |
| CN202020786481.4U CN212209505U (en) | 2019-09-30 | 2020-05-12 | Photovoltaic module suitable for solar cell |
| PCT/CN2020/092781 WO2021063008A1 (en) | 2019-09-30 | 2020-05-28 | Photovoltaic assembly applicable to solar cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911147162.7A CN110739356A (en) | 2019-11-21 | 2019-11-21 | large-size solar cell photovoltaic module |
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| CN110739356A true CN110739356A (en) | 2020-01-31 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021063008A1 (en) * | 2019-09-30 | 2021-04-08 | 天合光能股份有限公司 | Photovoltaic assembly applicable to solar cell |
| CN113675281A (en) * | 2021-07-28 | 2021-11-19 | 江苏东鋆光伏科技有限公司 | Large silicon wafer main gate double-sided dual-glass assembly and preparation method thereof |
| CN115084301A (en) * | 2022-01-13 | 2022-09-20 | 浙江晶科能源有限公司 | Solar energy assembly |
| CN115101617A (en) * | 2022-01-13 | 2022-09-23 | 浙江晶科能源有限公司 | Solar energy assembly |
-
2019
- 2019-11-21 CN CN201911147162.7A patent/CN110739356A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021063008A1 (en) * | 2019-09-30 | 2021-04-08 | 天合光能股份有限公司 | Photovoltaic assembly applicable to solar cell |
| CN113675281A (en) * | 2021-07-28 | 2021-11-19 | 江苏东鋆光伏科技有限公司 | Large silicon wafer main gate double-sided dual-glass assembly and preparation method thereof |
| CN115084301A (en) * | 2022-01-13 | 2022-09-20 | 浙江晶科能源有限公司 | Solar energy assembly |
| CN115101617A (en) * | 2022-01-13 | 2022-09-23 | 浙江晶科能源有限公司 | Solar energy assembly |
| CN115101617B (en) * | 2022-01-13 | 2024-01-19 | 浙江晶科能源有限公司 | Solar energy assembly |
| CN115084301B (en) * | 2022-01-13 | 2024-01-23 | 浙江晶科能源有限公司 | Solar energy assembly |
| US11949027B2 (en) | 2022-01-13 | 2024-04-02 | Zhejiang Jinko Solar Co., Ltd. | Solar module |
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