WO2023005913A1 - Chaîne de cellules solaires, son procédé de fabrication et son application - Google Patents

Chaîne de cellules solaires, son procédé de fabrication et son application Download PDF

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Publication number
WO2023005913A1
WO2023005913A1 PCT/CN2022/107881 CN2022107881W WO2023005913A1 WO 2023005913 A1 WO2023005913 A1 WO 2023005913A1 CN 2022107881 W CN2022107881 W CN 2022107881W WO 2023005913 A1 WO2023005913 A1 WO 2023005913A1
Authority
WO
WIPO (PCT)
Prior art keywords
solar cell
double
tape
cell string
sided transparent
Prior art date
Application number
PCT/CN2022/107881
Other languages
English (en)
Chinese (zh)
Inventor
刘宗涛
陈达明
陈奕峰
项建军
刘志远
邹杨
刘成法
王尧
夏锐
Original Assignee
天合光能股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 天合光能股份有限公司 filed Critical 天合光能股份有限公司
Publication of WO2023005913A1 publication Critical patent/WO2023005913A1/fr

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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
    • 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
    • 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
    • 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
    • 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

Definitions

  • connection method of the ribbon is that one end is welded to the front busbar of the front side silicon cell, and the other end is welded to the back busbar of the rear side silicon cell.
  • the current thickness of silicon cells tends to be thinner, and it is more likely to produce hidden cracks when they are connected by solder ribbons. In this way, the connection method of the ribbon will be more and more limited.
  • the grid wire is the electrode, and its function is to lead out the current generated by the solar cell.
  • the grid wire (electrode) of the solar cell is formed by screen printing and then sintered, and has many single wires parallel to each other with the same spacing composition.
  • the battery string provided by the present invention is a battery string without a main grid, that is, there are only auxiliary grid lines and no main grid lines.
  • the transmittance of the double-sided scotch tape provided by the present invention is the transmittance after lamination when the solar battery string is applied to a photovoltaic module.
  • the double-sided transparent tape is arranged along a direction perpendicular to a direction parallel to the welding strips.
  • the direction of the short gate lines is perpendicular to the parallel direction of the auxiliary gate lines.
  • the number of double-sided scotch tapes pointed out in the present invention refers to the number of adhesive tapes in each solar cell string in the solar cell string, and the number of adhesive tapes can also be understood as the number of rows or columns of adhesive tape on the solar cell sheet.
  • the number of strips of the adhesive tape matches the width of the adhesive tape, and the width is relatively narrow, which can be set more adaptably.
  • the number of wires is negatively correlated with the size, and the thinner the wires, the more wires are required.
  • the alloy coating has a melting point of 50°C to 200°C, such as 50°C, 60°C, 70°C, 80°C, 90°C, 100°C, 110°C, 120°C, 130°C, 140°C, 150°C, 160°C, 170°C, 180°C, 190°C, or 200°C, etc., preferably 100 to 160°C.
  • the length of the short grid lines is greater than the width of the double-sided transparent tape.
  • the material of the short grid lines is consistent with that of the auxiliary grid lines.
  • the sticking area of the double-sided transparent tape is smaller than the area of the short grid lines.
  • the present invention provides a method for preparing the solar cell string according to the first aspect, the preparation method comprising:
  • the present invention also provides a photovoltaic module, the photovoltaic module comprising the first glass, the first adhesive film, the solar cell string as described in the first aspect, the second adhesive film and the second glass which are sequentially stacked .
  • a third adhesive film is provided between the first adhesive film and the solar battery string as described in the first aspect.
  • a fourth adhesive film is arranged between the solar battery string as described in the first aspect and the second adhesive film.
  • the present invention has the following beneficial effects:
  • the invention uses double-sided transparent tape to connect the solder ribbon to the solar cell, and with a special grid design, the solder ribbon can be easily bonded to the solar cell, replacing the original welding pad points (metal solder joints) ), form a solar cell string, reduce the amount of silver paste and reduce the shading loss, and can be obtained by changing some accessories on the current welding machine, the method is simple and convenient; the tape is located between the welding tape and the battery, and will not affect the photogenerated current of the solar cell under the tape There is no need to combine the tape with the welding strip first, which greatly simplifies the preparation process.
  • Fig. 2 is a partial schematic diagram of a side view of a solar cell string provided in a specific embodiment.
  • Fig. 3 is a schematic structural diagram of a solar cell string provided in a specific embodiment.
  • 1-solar battery sheet 2-welding ribbon, 3-double-sided scotch tape, 4-short grid wire.
  • the number of welding strips 2 is ⁇ 1; the welding strips 2 include a wire and a coating covering the surface of the wire; the diameter of the wire is 0.1-400 ⁇ m, and further 100-300 ⁇ m; the coating includes a single metal coating and/or alloy Coating; the melting point of the alloy coating is 50-200°C, further 100-160°C.
  • the length of the short grid lines 4 is greater than the width of the double-sided transparent tape 3; the material of the short grid lines 4 is consistent with the material of the auxiliary grid lines;
  • a third adhesive film is arranged between the first adhesive film and the solar cell string provided in the above specific embodiment
  • a fourth adhesive film is provided between the solar cell string and the second adhesive film as provided in the above specific embodiment
  • This embodiment provides a solar cell string and its preparation method, based on the solar cell string and its preparation method provided in the specific implementation:
  • the number of welding strips 2 is 20; the welding strip 2 includes a wire and a coating covering the surface of the wire; the diameter of the wire is 240 ⁇ m; the coating is an alloy coating; the melting point of the alloy coating is 125 ° C; short grid wire 4 has a length of 8 mm.
  • This embodiment provides a solar cell string and its preparation method, based on the solar cell string and its preparation method provided in the specific implementation:
  • This embodiment provides a solar cell string and its preparation method, based on the solar cell string and its preparation method provided in the specific implementation:
  • the number of welding strips 2 is 30; the welding strip 2 includes a wire and a coating covering the surface of the wire; the diameter of the wire is 140 ⁇ m; the coating is an alloy coating; the melting point of the alloy coating is 140 ° C; short grid wire 4 has a length of 9mm.
  • This embodiment also provides a photovoltaic module based on the photovoltaic module provided in the detailed description: wherein, the thickness of the third adhesive film and the fourth adhesive film is 20 ⁇ m.

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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)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Energy (AREA)
  • Photovoltaic Devices (AREA)

Abstract

La présente invention concerne une chaîne de cellules solaires, son procédé de fabrication et son application. La chaîne de cellules solaires comprend des cellules solaires et une bande de soudage connectée en série aux cellules solaires ; la bande de soudage est collée aux surfaces des cellules solaires au moyen d'un ruban adhésif transparent double face ; le ruban adhésif transparent double face est situé entre la bande de soudage et les cellules solaires ; et de courtes lignes de grille dans des directions différentes des lignes de grille auxiliaires sont disposées au niveau des positions des cellules solaires où les rubans adhésifs transparents double face sont placés. Selon le procédé de fabrication de la chaîne de cellules solaires fourni par la présente invention, la bande de soudage peut être facilement collée aux cellules solaires, un point de soudage original est remplacé, la perte d'ombrage est réduite ainsi que la quantité de pâte d'argent utilisée, et la chaîne de cellules solaires peut être obtenue par le remplacement de quelques accessoires sur une machine à souder existante ; la transmittance du ruban adhésif est supérieure à 50 %, la lumière du soleil ne rencontre aucun obstacle pour pénétrer dans la zone située sous le ruban adhésif, de courtes lignes transversales sont utilisées pour faire sortir le courant photogénéré dans la zone située sous le ruban adhésif afin qu'il soit situé à proximité des lignes de grille, et le ruban adhésif n'a pas besoin d'être préalablement combiné avec une bande de soudage, de sorte que le processus de fabrication est extrêmement simplifié.
PCT/CN2022/107881 2021-07-28 2022-07-26 Chaîne de cellules solaires, son procédé de fabrication et son application WO2023005913A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110859776.9 2021-07-28
CN202110859776.9A CN113851550A (zh) 2021-07-28 2021-07-28 一种太阳能电池串及其制备方法和应用

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WO2023005913A1 true WO2023005913A1 (fr) 2023-02-02

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WO (1) WO2023005913A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116207188A (zh) * 2023-04-28 2023-06-02 苏州智慧谷激光智能装备有限公司 无主栅式电池片串接方法以及相应的串接设备
CN117637890A (zh) * 2023-11-28 2024-03-01 江苏海博瑞光伏科技有限公司 一种无主栅组件及其制备方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113851550A (zh) * 2021-07-28 2021-12-28 天合光能股份有限公司 一种太阳能电池串及其制备方法和应用
CN114883426A (zh) * 2022-04-26 2022-08-09 中威新能源(成都)有限公司 太阳电池互联方法、太阳电池及太阳电池组件
CN115172524B (zh) * 2022-07-13 2024-08-20 通威太阳能（合肥）有限公司 一种太阳电池及其互联方法
CN115295655A (zh) * 2022-10-08 2022-11-04 浙江制能科技有限公司 一种ibc电池组件及其制作方法
CN115513323B (zh) * 2022-10-28 2024-10-18 天合光能股份有限公司 一种太阳能电池串的连接结构与方法

Citations (5)

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Publication number Priority date Publication date Assignee Title
EP1571475A1 (fr) * 2004-03-04 2005-09-07 C.R.F. Società Consortile per Azioni Diode électro-optique de fibre-type
CN102751360A (zh) * 2012-07-20 2012-10-24 合肥海润光伏科技有限公司 光伏组件及其制作方法
CN204834651U (zh) * 2015-07-07 2015-12-02 湖南共创光伏科技有限公司 一种低温串接的太阳能电池组件
US20170271622A1 (en) * 2016-06-03 2017-09-21 Solar-Tectic, Llc High efficiency thin film tandem solar cells and other semiconductor devices
CN113851550A (zh) * 2021-07-28 2021-12-28 天合光能股份有限公司 一种太阳能电池串及其制备方法和应用

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1571475A1 (fr) * 2004-03-04 2005-09-07 C.R.F. Società Consortile per Azioni Diode électro-optique de fibre-type
CN102751360A (zh) * 2012-07-20 2012-10-24 合肥海润光伏科技有限公司 光伏组件及其制作方法
CN204834651U (zh) * 2015-07-07 2015-12-02 湖南共创光伏科技有限公司 一种低温串接的太阳能电池组件
US20170271622A1 (en) * 2016-06-03 2017-09-21 Solar-Tectic, Llc High efficiency thin film tandem solar cells and other semiconductor devices
CN113851550A (zh) * 2021-07-28 2021-12-28 天合光能股份有限公司 一种太阳能电池串及其制备方法和应用

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116207188A (zh) * 2023-04-28 2023-06-02 苏州智慧谷激光智能装备有限公司 无主栅式电池片串接方法以及相应的串接设备
CN117637890A (zh) * 2023-11-28 2024-03-01 江苏海博瑞光伏科技有限公司 一种无主栅组件及其制备方法

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