CN112382700A - Secondary-welding photovoltaic module and preparation method thereof - Google Patents
Secondary-welding photovoltaic module and preparation method thereof Download PDFInfo
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- CN112382700A CN112382700A CN202011209233.4A CN202011209233A CN112382700A CN 112382700 A CN112382700 A CN 112382700A CN 202011209233 A CN202011209233 A CN 202011209233A CN 112382700 A CN112382700 A CN 112382700A
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- welding
- photovoltaic module
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- battery
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- 238000003466 welding Methods 0.000 title claims abstract description 63
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 238000000034 method Methods 0.000 claims description 11
- 229910000679 solder Inorganic materials 0.000 claims description 7
- 238000012360 testing method Methods 0.000 claims description 5
- 238000001723 curing Methods 0.000 claims description 2
- 238000009432 framing Methods 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000031700 light absorption Effects 0.000 abstract description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010586 diagram Methods 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
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
-
- 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
-
- 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
-
- 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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- 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
- Y02E10/52—PV systems with concentrators
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a secondary welding photovoltaic module and a preparation method thereof, wherein the secondary welding photovoltaic module comprises the following steps: firstly, welding adjacent two battery plates for the first time by using a thin welding strip to realize seamless or laminated welding between battery strings; and then secondarily welding the functional welding strip on the battery piece with the front side welded. The photovoltaic module with the secondary welding function can directly realize seamless welding or stitch welding, does not affect the current collection performance of the battery piece, and can be superposed with functional welding strips, so that the light absorption is increased, the power of the module is improved, the implementation scheme is convenient and feasible, and the photovoltaic module can be applied in a large scale.
Description
Technical Field
The invention relates to a secondary-welding photovoltaic module and a preparation method thereof, and belongs to the technical field of photovoltaic modules.
Background
In the manufacturing of a photovoltaic module, in order to improve the module efficiency, one scheme is to reduce the distance between battery strings, but the existing welding strip needs to ensure a certain thickness in order to ensure the integrity of current collection of a battery piece, while the special intermittent welding strips used in the market have high requirements on welding equipment and welding strip manufacturers, and thin welding strips with better flexibility have short plates on the current collection, because the thin welding strips are thin, the cross-sectional area is smaller in a limited width, and the series resistance is larger.
Disclosure of Invention
The invention aims to overcome the technical difficulty of a seamless photovoltaic module or a stitch-welded photovoltaic module in the prior art, and provides a secondary-welded photovoltaic module and a preparation method thereof, which can ensure the flexibility of a welding strip, prevent a bent part from crushing a battery piece when connecting two battery pieces, superpose the functions of reflection and the like of a functional welding strip, and do not influence the current collection performance of the module.
In order to solve the technical problem, the invention provides a preparation method of a secondary welding photovoltaic module, which comprises the following steps: firstly, welding adjacent two battery plates for the first time by using a thin welding strip to realize seamless or laminated welding between battery strings; and then secondarily welding the functional welding strip on the battery piece with the front side welded.
Further, still include: laminating, framing, curing, testing.
Furthermore, the distance between two adjacent battery pieces ranges from-2 mm to 0.5 mm.
Furthermore, the thickness of the thin welding strip is 0.01-0.1 mm.
Further, the functional welding strip comprises a triangular welding strip, a concave-convex welding strip or a reflective welding strip.
Furthermore, the thickness of the functional welding strip is 0.08-0.5 mm.
Further, the number of the main grids of the cell used by the photovoltaic module is 6-15 grids.
The invention provides a photovoltaic module prepared by the method.
The invention achieves the following beneficial effects: the photovoltaic module with the secondary welding function can directly realize seamless welding or stitch welding, does not affect the current collection performance of the battery piece, and can be superposed with functional welding strips, so that the light absorption is increased, the power of the module is improved, the implementation scheme is convenient and feasible, and the photovoltaic module can be applied in a large scale.
Drawings
Fig. 1 is a schematic view of a secondary welded battery string of the present invention in a nearly seamless state;
FIG. 2 is a schematic view showing a tandem welding state of a secondary welding battery according to the present invention;
fig. 3 is a schematic diagram of a conventional single-weld battery string.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1
As shown in fig. 1, the cell pitch of a secondary soldered photovoltaic module is 0.3 mm.
A preparation method of a photovoltaic module for secondary welding comprises the steps of selecting a 9-grid cell 1 with the specification of 166 x 166mm, carrying out series welding by using a thin welding strip 2 with the length of 0.3 x 0.05mm in the first welding, directly welding three triangular welding strips 3 with the side length of 0.6mm on the thin welding strip with the width of 0.6mm in the second welding, wherein the size of a module consisting of 144 half cells is 2057mm x 1034mm, the testing power of the module is 452W, and the efficiency of the module is 21.25%.
Example 2
As shown in fig. 2, a secondary soldered photovoltaic module has a cell pitch of-0.5 mm.
A preparation method of a photovoltaic module with secondary welding comprises the steps of selecting a 9-grid cell 1 with the specification of 166 x 166mm, performing series welding on a thin welding strip 2 with the width of 0.4 x 0.04mm in the first welding process, directly welding a reflective welding strip 5 with the width of 0.5 x 0.23mm in the second welding process on the thin welding strip with the width of 0.6mm in the first welding process, wherein the size of a module consisting of 144 half cells is 2039mm x 1034mm, the testing power of the module is 451W, and the efficiency of the module is 21.39%.
Comparative example
As shown in fig. 3, a photovoltaic module is prepared by using a conventional design and scheme, a 166 × 166mm 9-grid cell is selected, a 0.35mm round wire solder strip 4 is used for series welding, the spacing between the cells 1 is 2mm, the module size of 144 half cells is 2094m × 1034mm, the module test power is 450W, and the module efficiency is 20.78%.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A method for preparing a secondary welded photovoltaic module is characterized by comprising the following steps: firstly, welding adjacent two battery plates for the first time by using a thin welding strip to realize seamless or laminated welding between battery strings; and then secondarily welding the functional welding strip on the battery piece with the front side welded.
2. The method of making a twice-soldered photovoltaic module according to claim 1, further comprising: laminating, framing, curing, testing.
3. The method for preparing a secondary welded photovoltaic module according to claim 1, wherein the distance between two adjacent battery plates is in the range of-2 mm to 0.5 mm.
4. The method for preparing a secondary soldered photovoltaic module according to claim 1, wherein the thickness of the thin solder strip is 0.01-0.1 mm.
5. The method of claim 1, wherein the functional solder ribbon comprises a fillet solder ribbon, a raised solder ribbon, or a reflective solder ribbon.
6. The method for preparing a secondary welded photovoltaic module according to claim 1, wherein the thickness of the functional solder strip is 0.08-0.5 mm.
7. The method for preparing a secondary welded photovoltaic module according to claim 1, wherein the number of the primary grids of the cell used in the photovoltaic module is 6-15 grids.
8. A photovoltaic module prepared according to the method of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011209233.4A CN112382700A (en) | 2020-11-03 | 2020-11-03 | Secondary-welding photovoltaic module and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011209233.4A CN112382700A (en) | 2020-11-03 | 2020-11-03 | Secondary-welding photovoltaic module and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112382700A true CN112382700A (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011209233.4A Pending CN112382700A (en) | 2020-11-03 | 2020-11-03 | Secondary-welding photovoltaic module and preparation method thereof |
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| CN (1) | CN112382700A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097511A (en) * | 2010-09-26 | 2011-06-15 | 常州天合光能有限公司 | Progressively welded packaging module |
| CN203351624U (en) * | 2013-05-15 | 2013-12-18 | 阿特斯(中国)投资有限公司 | Compound reflective soldering strip and panel assembly |
| CN104485365A (en) * | 2014-12-24 | 2015-04-01 | 无锡尚德太阳能电力有限公司 | Compound type embossing photovoltaic welding strip and machining method thereof |
| CN204632766U (en) * | 2014-12-24 | 2015-09-09 | 无锡尚德太阳能电力有限公司 | Compound embossing photovoltaic welding belt |
| CN106024959A (en) * | 2016-07-18 | 2016-10-12 | 邓琴 | Structured high-gain reflecting solder strip for solar cell panel |
| CN107564987A (en) * | 2017-09-07 | 2018-01-09 | 泰州隆基乐叶光伏科技有限公司 | A kind of welding structure applied to stacked wafer moudle |
| CN107799615A (en) * | 2017-10-20 | 2018-03-13 | 杭州瞩日能源科技有限公司 | Solar cell blade unit, photovoltaic cell module and its preparation technology |
| CN209896080U (en) * | 2019-04-18 | 2020-01-03 | 泰州隆基乐叶光伏科技有限公司 | Photovoltaic module solder strip and photovoltaic module |
| CN210092106U (en) * | 2019-06-03 | 2020-02-18 | 上海晶澳太阳能科技有限公司 | Solder strip, laminated cell string and laminated photovoltaic module |
| CN111192933A (en) * | 2020-03-08 | 2020-05-22 | 上海金羊钫新能源科技中心(有限合伙) | Solar photovoltaic module and building photovoltaic integrated module |
-
2020
- 2020-11-03 CN CN202011209233.4A patent/CN112382700A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097511A (en) * | 2010-09-26 | 2011-06-15 | 常州天合光能有限公司 | Progressively welded packaging module |
| CN203351624U (en) * | 2013-05-15 | 2013-12-18 | 阿特斯(中国)投资有限公司 | Compound reflective soldering strip and panel assembly |
| CN104485365A (en) * | 2014-12-24 | 2015-04-01 | 无锡尚德太阳能电力有限公司 | Compound type embossing photovoltaic welding strip and machining method thereof |
| CN204632766U (en) * | 2014-12-24 | 2015-09-09 | 无锡尚德太阳能电力有限公司 | Compound embossing photovoltaic welding belt |
| CN106024959A (en) * | 2016-07-18 | 2016-10-12 | 邓琴 | Structured high-gain reflecting solder strip for solar cell panel |
| CN107564987A (en) * | 2017-09-07 | 2018-01-09 | 泰州隆基乐叶光伏科技有限公司 | A kind of welding structure applied to stacked wafer moudle |
| CN107799615A (en) * | 2017-10-20 | 2018-03-13 | 杭州瞩日能源科技有限公司 | Solar cell blade unit, photovoltaic cell module and its preparation technology |
| CN209896080U (en) * | 2019-04-18 | 2020-01-03 | 泰州隆基乐叶光伏科技有限公司 | Photovoltaic module solder strip and photovoltaic module |
| CN210092106U (en) * | 2019-06-03 | 2020-02-18 | 上海晶澳太阳能科技有限公司 | Solder strip, laminated cell string and laminated photovoltaic module |
| CN111192933A (en) * | 2020-03-08 | 2020-05-22 | 上海金羊钫新能源科技中心(有限合伙) | Solar photovoltaic module and building photovoltaic integrated module |
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