CN116544296A - Preparation method of photovoltaic module and photovoltaic module - Google Patents
Preparation method of photovoltaic module and photovoltaic module Download PDFInfo
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- CN116544296A CN116544296A CN202210085775.8A CN202210085775A CN116544296A CN 116544296 A CN116544296 A CN 116544296A CN 202210085775 A CN202210085775 A CN 202210085775A CN 116544296 A CN116544296 A CN 116544296A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 230000001678 irradiating effect Effects 0.000 claims abstract description 27
- 239000002313 adhesive film Substances 0.000 claims abstract description 18
- 238000004806 packaging method and process Methods 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 14
- 230000005855 radiation Effects 0.000 claims description 11
- 238000005520 cutting process Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 4
- 230000004907 flux Effects 0.000 abstract description 11
- 238000005476 soldering Methods 0.000 abstract description 5
- 238000003466 welding Methods 0.000 description 28
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000007788 liquid Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 238000005538 encapsulation Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920006280 packaging film Polymers 0.000 description 2
- 239000012785 packaging film Substances 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
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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
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
- H01L31/1876—Particular processes or apparatus for batch treatment of the devices
- H01L31/188—Apparatus specially adapted for automatic interconnection of solar cells in a module
-
- 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
- H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a preparation method of a photovoltaic module and the photovoltaic module, and the preparation method of the photovoltaic module comprises the following steps: preparing a plurality of battery pieces; forming a battery string: connecting a plurality of battery pieces through an electric connector to form a battery string; and irradiating the battery piece with light: and irradiating a plurality of battery pieces by adopting light with the wavelength range of 200-500 nm. The light with the wavelength range of 200-500nm is adopted to irradiate a plurality of battery pieces, and after the light with the wavelength range of 200-500nm is irradiated, organic dirt on the surfaces of the battery pieces, including residual soldering flux of components, brought in the preparation process of the battery pieces, can be removed, so that the stripping performance of the battery pieces and packaging adhesive films can be improved, the power of a photovoltaic module is improved, and the reliability of the photovoltaic module is improved.
Description
Technical Field
The invention relates to the technical field of photovoltaic modules, in particular to a preparation method of a photovoltaic module and the photovoltaic module.
Background
In the related art, in the preparation process of the battery piece, organic components of slurry are easy to volatilize on the surface of the battery piece in the low-temperature drying and curing process, so that the surface energy of the battery piece is reduced, the peeling energy of the battery piece and a packaging adhesive film is reduced due to the reduction of the surface energy of the battery piece, and the risk of reliability failure is caused, particularly, the battery piece is influenced by illumination, temperature change, moisture and the like outdoors.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the preparation method of the photovoltaic module, which can remove organic dirt on the surface of the battery piece, and comprises residual soldering flux of the module caused in the preparation process of the battery piece, so that the stripping performance of the battery piece and the packaging adhesive film can be improved, the power of the photovoltaic module is improved, and the reliability of the photovoltaic module is improved.
The invention further provides a photovoltaic module.
The preparation method of the photovoltaic module comprises the following steps: preparing a plurality of battery pieces; forming a battery string: connecting a plurality of battery pieces through an electric connector to form a battery string; and irradiating the battery piece with light: and irradiating a plurality of battery pieces by adopting light with the wavelength range of 200-500 nm.
According to the preparation method of the photovoltaic module, the plurality of battery pieces are irradiated by light with the wavelength range of 200-500nm, organic dirt on the surfaces of the battery pieces can be removed after the light with the wavelength range of 200-500nm is irradiated, and the organic dirt comprises residues of the soldering flux of the module and the battery pieces caused in the preparation process of the battery pieces, so that the stripping performance of the battery pieces and the packaging adhesive film can be improved, the power of the photovoltaic module is improved, and the reliability of the photovoltaic module is improved.
In some examples of the invention, a plurality of the battery cells are irradiated with light having a wavelength in the range of 200-500nm prior to the step of forming the battery string.
In some examples of the invention, the step of preparing the plurality of battery pieces includes: cutting a plurality of battery pieces by using a slicing machine; the step of irradiating the battery piece with light includes: and irradiating a plurality of battery pieces on a transmission track behind the slicing machine by adopting light with the wavelength range of 200-500 nm.
In some examples of the invention, the step of preparing the plurality of battery pieces includes: cutting a plurality of battery pieces by using a slicing machine; after the step of preparing a plurality of battery pieces and before the step of irradiating the battery pieces with light, further comprising: stacking a plurality of battery pieces; and feeding the stacked plurality of battery pieces on a stringer.
In some examples of the invention, the step of preparing the plurality of battery pieces includes: cutting a plurality of battery pieces by using a slicing machine; after the step of illuminating the battery sheet and before the step of forming the battery string, further comprising: stacking a plurality of battery pieces; and feeding the stacked plurality of battery pieces on a stringer.
In some examples of the invention, the step of illuminating the battery sheet further comprises: after the step of forming the battery string, the battery string is irradiated with light having a wavelength ranging from 200 to 500 nm.
In some examples of the invention, after the step of forming the battery string, the battery string is irradiated with light having a wavelength in the range of 200-500 nm.
In some examples of the invention, the step of illuminating the battery sheet comprises: and irradiating a plurality of the battery pieces or the battery strings with UV light.
In some examples of the invention, the step of illuminating the battery sheet comprises: a plurality of the battery pieces or the battery strings are irradiated with a combination of UV light.
In some examples of the invention, the step of illuminating the battery sheet comprises: and irradiating a plurality of the battery pieces or the battery strings with UVC of different wavelengths.
In some examples of the invention, the step of illuminating the battery sheet comprises: with radiation intensity in the range 5W/m 2 -30W/m 2 The UVC and radiation intensity of the first wavelength of (2) is in the range of 100W/m 2 -500W/m 2 A plurality of said battery sheets or said battery strings are irradiated with UVC of a second wavelength, said first wavelength being smaller than said second wavelength.
In some examples of the present invention, in the step of irradiating the battery sheet with light, the light irradiation duration is t, and t satisfies the relation: t is more than or equal to 1min and less than or equal to 20min.
In some examples of the present invention, in the step of irradiating the battery sheet with light, the ambient temperature is T, and T satisfies the relation: t is more than or equal to 20 ℃ and less than or equal to 120 ℃.
In some examples of the invention, further comprising: and laminating the battery string, the front cover plate, the packaging adhesive film and the back plate to form the photovoltaic module.
The photovoltaic module is prepared by adopting the preparation method of the photovoltaic module.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is an overall flow chart of a method of manufacturing a photovoltaic module;
FIG. 2 is a flow chart of a first embodiment of a method of manufacturing a photovoltaic module;
FIG. 3 is a flow chart of a first embodiment of a method of manufacturing a photovoltaic module in a first instance;
FIG. 4 is a flow chart of a first embodiment of a method of manufacturing a photovoltaic module in a second situation;
FIG. 5 is a flow chart of a second embodiment of a method of manufacturing a photovoltaic module;
fig. 6 is a schematic view of a photovoltaic module according to an embodiment of the present invention.
Reference numerals:
1. a photovoltaic module;
10. a battery sheet; 20. a front cover plate; 30. packaging the adhesive film; 40. a back plate.
Detailed Description
Embodiments of the present invention will be described in detail below, by way of example with reference to the accompanying drawings.
A method of manufacturing the photovoltaic module 1 according to an embodiment of the present invention, and the photovoltaic module 1 manufactured by the manufacturing method, are described below with reference to fig. 1 to 6.
As shown in fig. 1, the method for manufacturing a photovoltaic module 1 according to an embodiment of the present invention includes the following steps:
s1, a plurality of battery pieces 10 are prepared. Specifically, the plurality of battery pieces 10 may be prepared by texturing, CVD (chemical vapor deposition), PVD (physical vapor deposition), screen printing, low-temperature drying, curing, photo-thermal, and test sorting.
S2, forming a battery string: the plurality of battery cells 10 are connected by electrical connectors to form a battery string. The plurality of battery pieces 10 may form a battery string through the electrical connection member, so that the plurality of battery pieces 10 may be connected into a whole, thereby facilitating the installation and arrangement of the plurality of battery pieces 10 and facilitating the conduction of the plurality of battery pieces 10. The electric connector can be a metal wire or a film, such as a welding strip, or a conductive metal wire film interconnection part, mainly connects the positive electrode and the negative electrode of the adjacent battery pieces 10 in sequence to form a battery string, the process can also be called series welding, in actual use, the electric connector is a slicing and series welding integrated machine, the whole slice is fed, the slicing can be vertically welded, and the electric connector is an off-line slicing machine, generally in the same workshop, and the slicing machine and the series welding machine are used for carrying out series welding after slicing firstly and then carrying out series welding.
S3, irradiating the battery piece 10 with light: the plurality of battery cells 10 are irradiated with light having a wavelength ranging from 200 to 500 nm. The plurality of battery pieces 10 are irradiated by light with the wavelength range of 200-500nm, and organic dirt on the surfaces of the battery pieces 10, including residues of component soldering flux and the like brought by the battery pieces 10 in the preparation process, can be removed after the light with the wavelength range of 200-500nm is irradiated, so that the stripping performance of the battery pieces 10 and the packaging adhesive film 30 can be improved, the power of the photovoltaic module 1 is improved, and the reliability of the photovoltaic module 1 is improved. It should be noted that step S3 may be before and/or after step S2.
And S4, laminating the battery string, the front cover plate 20, the packaging adhesive film 30 and the back plate 40 to form the photovoltaic module 1. As shown in fig. 6, after passing through the front cover plate 20 and the encapsulation adhesive film 30, the sunlight reaches the battery strings to conduct electricity, and reaches the encapsulation adhesive film 30 at the other side of the battery strings through the gaps between the battery strings, the sunlight passes through the encapsulation adhesive film 30 to reach the back plate 40, and is reflected by the back plate 40, and the reflected sunlight is re-irradiated onto the battery strings through the encapsulation adhesive film 30 at the other side of the battery strings, so that the conversion efficiency of the battery strings can be increased.
Wherein, as shown in fig. 2, before step S2, the plurality of battery pieces 10 are irradiated with light having a wavelength ranging from 200 to 500 nm. That is, the step S3 is set before the step S2, so that the organic matters on the surface of the grid line of the battery piece 10 can be removed before the welding strip is welded on the battery piece 10, so that the pulling-out force of the welding strip can be improved, and the connection reliability between the welding strip and the battery piece 10 is ensured.
Optionally, in step S1, a plurality of battery pieces 10 are cut out using a microtome. That is, when the slicer is in an in-line type, a plurality of battery cells 10 may be cut in the in-line slicer first, and may be directly transferred to the next process after the cutting process is completed.
In step S3, the plurality of battery pieces 10 are irradiated with light having a wavelength ranging from 200 to 500nm on the transport rail after the microtome. That is, after the plurality of battery pieces 10 are cut by the in-line type slicer, the plurality of battery pieces 10 can be transferred to the series welding process through the transmission track, and before the series welding, the plurality of battery pieces 10 can be irradiated by light with the wavelength range of 200-500nm on the transmission track, so that organic matters on the grid line surface of the battery pieces 10 can be removed before the welding strip is welded on the battery pieces 10, the pulling-out force of the welding strip can be improved, and the connection reliability between the welding strip and the battery pieces 10 is ensured.
Alternatively, in step S1, a plurality of battery pieces 10 are cut out using a microtome. That is, when the slicer is off-line, the plurality of battery pieces 10 may be cut by the off-line slicer, and then the cut plurality of battery pieces 10 may be carried to the stringer for series welding, etc., so that the battery pieces 10 may be prepared.
As shown in fig. 3, after step S1 and before step S3, the method further includes the following steps:
s10, stacking a plurality of battery pieces 10. Because the cut plurality of battery pieces 10 need to be carried to the stringer, the plurality of battery pieces 10 are stacked, and therefore the plurality of battery pieces 10 can be carried to the stringer more conveniently.
S11, feeding the stacked plurality of battery pieces 10 on a stringer. After the plurality of battery pieces 10 are conveyed to the series welding machine, the plurality of battery pieces 10 are required to be fed on the series welding machine, so that the plurality of battery pieces 10 can be better subjected to series welding.
That is, the plurality of battery pieces 10 may be stacked before the plurality of battery pieces 10 are irradiated with light in a wavelength range of 200-500nm, and the stacked plurality of battery pieces 10 may be fed on the stringer, so that dirt may be avoided after the plurality of battery pieces 10 are stacked, thereby affecting the effect of the light irradiation in a wavelength range of 200-500 nm. In addition, since the stacked battery pieces 10 may not be in time series-welded, the surface energy may be lowered during the placement, and thus UV treatment is preferably performed after the series-welding machine is fed.
As shown in fig. 4, the method may further include the following steps after step S3 and before step S2:
s30, stacking a plurality of battery pieces 10. Also, since it is necessary to carry the plurality of cut battery pieces 10 to the stringer and stack the plurality of battery pieces 10, it is possible to more conveniently carry the plurality of battery pieces 10 to the stringer.
S31, feeding the stacked plurality of battery pieces 10 on a stringer. In the same way, after the plurality of battery pieces 10 are conveyed to the series welding machine, the plurality of battery pieces 10 are required to be fed on the series welding machine, so that the plurality of battery pieces 10 can be better subjected to series welding.
That is, the plurality of battery pieces 10 may be stacked after the plurality of battery pieces 10 are irradiated with light having a wavelength range of 200-500nm, and the stacked plurality of battery pieces 10 may be fed on the stringer, so that the plurality of battery pieces 10 may be prevented from being irradiated with light having a wavelength range of 200-500nm on the stringer, thereby causing inconvenience to the series welding of the plurality of battery pieces 10.
Further, as shown in fig. 5, step S3 further includes: after step S2, the method further comprises the steps of: the cell string is irradiated with light having a wavelength in the range of 200-500 nm. That is, not only is the cell string irradiated with light having a wavelength range of 200-500nm before step S2, but also the cell string is formed by connecting the plurality of the cells 10 via the electrical connector and then irradiated with light having a wavelength range of 200-500nm, so that not only the peeling energy between the cells 10 and the packaging adhesive film 30 can be improved, but also the flux residue on the surface of the cells 10 can be removed, the corrosion of the flux to the cells 10 and the packaging adhesive film 30 in the lamination process can be reduced, and the initial efficiency and reliability of the photovoltaic module 1 can be improved.
Of course, as shown in fig. 1, after step S2, the cell string is irradiated with light having a wavelength ranging from 200 to 500 nm. That is, the step S2 is set before the step S3, so that the flux residue on the surface of the battery piece 10 can be removed, the corrosion of the flux to the battery piece 10 and the packaging adhesive film 30 in the lamination process is reduced, and the initial efficiency and reliability of the photovoltaic module 1 are improved.
In addition, step S3 includes: the plurality of battery pieces 10 or the battery string is irradiated with UV light (ultraviolet light). Irradiation of the surface of the plurality of battery pieces 10 or the battery strings with UV light can better improve the surface energy value of the irradiated surface of the plurality of battery pieces 10 or the battery strings. Preferably, the UV irradiation may be performed in combination with a string EL (expression language) detection station.
The following is a detailed description of the method of testing the surface energy of the battery sheet 10.
The liquids with different surface energy values are selected to be brushed on the surface of the battery piece 10, and the expansion or contraction of the liquids is observed within 5 seconds. If the surface energy of the battery piece 10 is less than or equal to the surface energy value of the liquid, the ink does not expand or shrink, and if the surface energy of the battery piece 10 is greater than the surface energy value of the liquid, the ink expands. Wherein the upper limit of the surface energy of the test liquid is 72mN/m.
Unpacking the battery piece 10, enabling the battery piece 10 to enter a transmission track, arranging welding strips attached with soldering flux on the surface of the battery piece 10 by UV irradiation, heating and welding, typesetting battery strings, and laminating.
Table 1 improvement of the performance of the battery sheet 10, photovoltaic module 1 by different post treatments
In a first example of a method for producing a photovoltaic module 1, wherein the experimental group 1 has the UV irradiation step of the first example, UV-150W/m 2 The irradiated face of the cell was irradiated at-130℃for 1min, and comparative group 1 was free of UV irradiation step. The comparative data in Table 1 shows that after UV irradiation was increased according to the procedure of the first embodiment, the surface energy of the irradiated face of the battery sheet 10 was raised from 34 to 72mN/m, and the peeling energy of the irradiated face of the battery sheet 10 from the packaging film 30 was raised from 430J/m 2 Lifting to 660J/m 2 Meanwhile, organic matters on the surface of the grid line of the battery piece 10 are removed before welding the welding strip, so that the pulling-out force of the welding strip can be increased from 0.84N to 1.05N.
Table 2 improvement of the performance of the battery sheet 10, photovoltaic module 1 by different post treatments
In a third example of the method for producing a photovoltaic module 1, wherein the experimental group 2 has the UV irradiation step of the third example, UV-150W/m 2 The irradiated face of the cell 10 was irradiated at 130 ℃ for 1min, and comparative group 2 had no UV irradiation step. The comparative data in Table 2 shows that after UV irradiation was increased according to the procedure of the third embodiment, the surface energy of the irradiated face of the battery sheet 10 was raised from 34mN/m to 72mN/m, and the peeling energy of the irradiated face of the battery sheet 10 from the packaging film 30 was raised from 430J/m 2 Lifting to 700J/m 2 Meanwhile, due to the fact that the flux residue on the surface of the battery piece 10 is removed, the further influence of the flux on the battery piece 10 in the lamination process is reduced, the initial efficiency of the photovoltaic module 1 is improved to 21.75% from 21.70%, and the power relative attenuation amplitude of the photovoltaic module 1 is reduced to 1.4% from 2.2% after DH1000 (85-85% relative humidity, 1000 h).
In the second embodiment of the production method of the photovoltaic module 1, the first embodiment and the third embodiment may be combined, so that the effects in the first embodiment and the third embodiment may be combined.
According to an alternative embodiment of the invention, step S3 comprises: the plurality of battery pieces 10 or the battery strings are irradiated with a combination of UV light. That is, the surface of the battery sheet 10 or the battery string is irradiated by different combinations of UV light, so that organic contamination of the surface of the battery sheet 10 or the battery string can be removed, and different effects are achieved, so that the requirements in different situations can be satisfied.
Optionally, step S3 includes: the battery sheet 10 or the battery string is irradiated with UVC (short wave ultraviolet) of different wavelengths. After the surface of the battery piece 10 or the battery string is irradiated by UVC with different wavelengths, organic dirt on the surface of the battery piece 10 or the battery string can be effectively removed under certain conditions, the surface energy of the battery piece 10 or the battery string is improved, the stripping energy between the battery piece 10 and the packaging adhesive film 30 is effectively improved, and the connection reliability of the packaging adhesive film 30 and the battery piece 10 is improved.
Specifically, step S3 includes: with radiation intensity in the range 5W/m 2 -30W/m 2 The UVC and radiation intensity of the first wavelength of (2) is in the range of 100W/m 2 -500W/m 2 The UVC of the second wavelength of (c) irradiates the battery sheet 10 or the battery string, the first wavelength being smaller than the second wavelength. That is, the radiation intensity range of UVC having a smaller wavelength is set as: 5W/m 2 -30W/m 2 The radiation intensity range of UVC with a large wavelength is set as: 100W/m 2 -500W/m 2 The arrangement is reasonable, the radiation requirements of UVC with different wavelengths on the surfaces of the battery pieces 10 or the battery strings can be better met, the irradiation effect of UVC with different wavelengths is better, the effect that the battery pieces 10 or the surfaces of the battery strings are removed from organic matters is not obvious due to the fact that the radiation intensity is too small is avoided, and the influence on the overall structure and the performance of the battery pieces 10 or the battery strings is possibly caused due to the fact that the radiation is too large. Wherein the first wavelength is preferably 185nm and the second wavelength is preferably 254nm.
In step S3, the light irradiation period is t, and t satisfies the relation: t is more than or equal to 1min and less than or equal to 20min. That is, the irradiation duration of the UVC with different wavelengths also needs to satisfy a certain condition, and the irradiation duration is preferably within the range of 1min-20min, so that the irradiation effect of the UVC with different wavelengths is better, the effect of removing the organic matters on the surface of the battery piece 10 due to the too short irradiation duration is not obvious, and the influence on the overall structure and performance of the battery piece 10 may be caused due to the too long irradiation duration.
Of course, in step S3, the ambient temperature is T, and T satisfies the relation: t is more than or equal to 20 ℃ and less than or equal to 120 ℃. The environmental temperature needs to be equal to or higher than 20 ℃, and when the surface of the battery piece 10 is irradiated by the UVC with different wavelengths, if the environmental temperature is too high, the structure of the battery piece 10 is damaged, so that the environmental temperature also needs to be equal to or lower than 120 ℃, and the UVC with different wavelengths can better act on the surface of the battery piece 10, so that the organic dirt on the surface of the heterojunction battery can be better removed.
As shown in fig. 6, the photovoltaic module 1 according to the embodiment of the present invention is manufactured by the manufacturing method of the photovoltaic module 1 described in the above embodiment.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
In the description of the invention, a "first feature" or "second feature" may include one or more of such features. In the description of the present invention, "plurality" means two or more. In the description of the invention, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween. In the description of the invention, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (15)
1. The preparation method of the photovoltaic module is characterized by comprising the following steps of:
preparing a plurality of battery pieces;
forming a battery string: connecting a plurality of battery pieces through an electric connector to form a battery string;
and irradiating the battery piece with light: and irradiating a plurality of battery pieces by adopting light with the wavelength range of 200-500 nm.
2. The method of manufacturing a photovoltaic module according to claim 1, wherein, prior to the step of forming the cell string,
and irradiating a plurality of battery pieces by adopting light with the wavelength range of 200-500 nm.
3. The method of manufacturing a photovoltaic module according to claim 2, wherein the step of manufacturing a plurality of battery pieces comprises:
cutting a plurality of battery pieces by using a slicing machine;
the step of irradiating the battery piece with light includes:
and irradiating a plurality of battery pieces on a transmission track behind the slicing machine by adopting light with the wavelength range of 200-500 nm.
4. The method of manufacturing a photovoltaic module according to claim 2, wherein the step of manufacturing a plurality of battery pieces comprises:
cutting a plurality of battery pieces by using a slicing machine;
after the step of preparing a plurality of battery pieces and before the step of irradiating the battery pieces with light, further comprising:
stacking a plurality of battery pieces;
and feeding the stacked plurality of battery pieces on a stringer.
5. The method of manufacturing a photovoltaic module according to claim 2, wherein the step of manufacturing a plurality of battery pieces comprises:
cutting a plurality of battery pieces by using a slicing machine;
after the step of illuminating the battery sheet and before the step of forming the battery string, further comprising:
stacking a plurality of battery pieces;
and feeding the stacked plurality of battery pieces on a stringer.
6. The method of manufacturing a photovoltaic module according to claim 2, wherein the step of irradiating the cell with light further comprises: after the step of forming the battery string,
the battery string is irradiated with light having a wavelength in the range of 200-500 nm.
7. The method of manufacturing a photovoltaic module according to claim 1, wherein, after the step of forming the cell string,
the battery string is irradiated with light having a wavelength in the range of 200-500 nm.
8. The method of manufacturing a photovoltaic module according to claim 1, wherein the step of irradiating the cell with light comprises:
and irradiating a plurality of the battery pieces or the battery strings with UV light.
9. The method of manufacturing a photovoltaic module according to claim 8, wherein the step of irradiating the cell with light comprises:
a plurality of the battery pieces or the battery strings are irradiated with a combination of UV light.
10. The method of manufacturing a photovoltaic module according to claim 9, wherein the step of irradiating the cell with light comprises:
and irradiating a plurality of the battery pieces or the battery strings with UVC of different wavelengths.
11. The method of manufacturing a photovoltaic module according to claim 10, wherein the step of irradiating the cell with light comprises:
with radiation intensity in the range 5W/m 2 -30W/m 2 The UVC and radiation intensity of the first wavelength of (2) is in the range of 100W/m 2 -500W/m 2 A plurality of said battery sheets or said battery strings are irradiated with UVC of a second wavelength, said first wavelength being smaller than said second wavelength.
12. The method of manufacturing a photovoltaic module according to claim 10, wherein, in the step of irradiating the cell with light,
the light irradiation duration is t, and t satisfies the relation: t is more than or equal to 1min and less than or equal to 20min.
13. The method of manufacturing a photovoltaic module according to claim 10, wherein, in the step of irradiating the cell with light,
the ambient temperature is T, and T satisfies the relation: t is more than or equal to 20 ℃ and less than or equal to 120 ℃.
14. The method of manufacturing a photovoltaic module according to claim 1, further comprising:
and laminating the battery string, the front cover plate, the packaging adhesive film and the back plate to form the photovoltaic module.
15. A photovoltaic module prepared by the method of any one of claims 1-14.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210085775.8A CN116544296A (en) | 2022-01-25 | 2022-01-25 | Preparation method of photovoltaic module and photovoltaic module |
| PCT/CN2023/072811 WO2023143288A1 (en) | 2022-01-25 | 2023-01-18 | Photovoltaic assembly preparation method, photovoltaic assembly, and heterojunction cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210085775.8A CN116544296A (en) | 2022-01-25 | 2022-01-25 | Preparation method of photovoltaic module and photovoltaic module |
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| Publication Number | Publication Date |
|---|---|
| CN116544296A true CN116544296A (en) | 2023-08-04 |
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| CN202210085775.8A Pending CN116544296A (en) | 2022-01-25 | 2022-01-25 | Preparation method of photovoltaic module and photovoltaic module |
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| Country | Link |
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| CN (1) | CN116544296A (en) |
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- 2022-01-25 CN CN202210085775.8A patent/CN116544296A/en active Pending
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