WO2022010048A1 - Module solaire étirable - Google Patents

Module solaire étirable Download PDF

Info

Publication number
WO2022010048A1
WO2022010048A1 PCT/KR2020/016199 KR2020016199W WO2022010048A1 WO 2022010048 A1 WO2022010048 A1 WO 2022010048A1 KR 2020016199 W KR2020016199 W KR 2020016199W WO 2022010048 A1 WO2022010048 A1 WO 2022010048A1
Authority
WO
WIPO (PCT)
Prior art keywords
solar
solar cell
stretchable
connector
module
Prior art date
Application number
PCT/KR2020/016199
Other languages
English (en)
Korean (ko)
Inventor
차승일
윤민주
심연향
이동윤
Original Assignee
한국전기연구원
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 한국전기연구원 filed Critical 한국전기연구원
Publication of WO2022010048A1 publication Critical patent/WO2022010048A1/fr

Links

Images

Classifications

    • 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
    • H01L31/0445—PV modules or arrays of single PV cells including thin film solar cells, e.g. single thin film a-Si, CIS or CdTe solar cells
    • H01L31/046—PV modules composed of a plurality of thin film solar cells deposited on the same substrate
    • 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
    • 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
    • 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

Definitions

  • the present invention relates to a stretchable solar module that can be installed on an installation surface of various shapes.
  • PV photovoltaic
  • a technology for generating energy by installing a solar cell on the top of a structure such as a roof of a building or vehicle is developing.
  • the use of the solar panel cannot be limited to the installation location, and the module needs to be integrated into any space, whereas in order to install a general plate-type solar cell in the design of a structure that is diversifying, an additional structure must be separately installed or the installation location.
  • the conventional solar cell module has a flat and solid structure, which guarantees mechanical durability and can be manufactured simply.
  • this structure limits the application of these modules, there is a need for a photovoltaic module that can be deformed for various applications. In this case, it is necessary to install the solar cell module on a curved surface that covers the entire area without electrical deterioration. Since the solar cell is hard and brittle, a new technology providing such flexibility is required.
  • a curved glass substrate is manufactured, and using this, a curved glass substrate is used, such as a sunroof and a panoramic roof.
  • a curved dye-sensitized solar cell suitable for application to a vehicle body structure and a method for manufacturing the same.
  • a solar cell module in order for a solar panel to cover an arbitrary curved surface, a solar cell module must be applicable regardless of the curvature of the surface. For this, flexibility and elasticity are required.
  • the efficiency of solar cells in the past has been determined by the materials used in their manufacturing, maximizing electrical output requires a flexible and stretchable connection that can cover the mounting surface as much as possible with the solar cell.
  • the present inventors focused on the above technical requirements and connected the unit solar cells with a flexible conductive connector to realize various shapes through flexible wrinkle patterns and interconnections, and a stretchable solar module without loss of area It is a technical solution task to provide.
  • the present invention for solving the above technical problem
  • It consists of two or more unit solar cells, and a conductive connector connecting the unit solar cells,
  • the conductive connector provides a stretchable solar module, characterized in that it is a metal fiber-based connector having elasticity and flexibility.
  • the metal fiber-based connector is a connector made of a metal fabric, and when adjacent unit solar cells are connected, the direction in which the adjacent unit solar cells are connected and the metal fabric are biased in an oblique direction. It is connected, characterized in that it has elasticity due to tension or contraction of the metal fabric connecting body.
  • the unit solar cell is made of a polygonal shape of a triangle, a square, or a hexagon, characterized in that it forms a tessellation structure by the flexible folding.
  • one end of the connector is connected to the negative electrode of one unit solar cell, and the other end of the connector is connected to the positive electrode of another unit solar cell, so that the adjacent unit solar cells are connected. characterized in that it is formed.
  • the unit solar cell is
  • the stretchable solar module of the present invention has the effect of being able to deform into various shapes as the unit solar cells are interconnected while showing a flexible folding pattern through a conductive connector having elasticity and flexibility.
  • a tessellation structure can be formed because it can be folded up to 180° by the metal fabric connector used when connecting the unit solar cells. In this way, it is possible to install a solar module without electrical deterioration corresponding to an arbitrary curved surface by the elasticity and flexible folding.
  • FIG. 1 shows a stretchable solar module array according to an embodiment of the present invention.
  • FIG. 2 shows the structure of a unit solar cell in the stretchable solar module 100 of the present invention.
  • FIG. 3 shows a structure in which unit solar cells are connected in the stretchable solar module of the present invention.
  • Figure 4a shows the elasticity according to the tension direction of the metal fabric used in the stretchable solar module of the present invention.
  • Figure 4b is a stress-strain test result of the metal fabric used in the stretchable solar module of the present invention.
  • 5 and 6 respectively show electrical characteristics after stretching and folding of the solar module array to which two unit solar cells are connected, compared with the original solar array.
  • FIG. 7 shows a solar module array model having two model types including a right triangle and an equilateral triangle.
  • FIG. 10 shows energy conversion efficiency of a right-angled triangle and an equilateral triangle unit solar cell according to an embodiment of the present invention.
  • FIG. 11 shows a 64 cell tessellation structure solar module array having a right triangle and an equilateral triangle according to an embodiment of the present invention.
  • FIG. 13 and 14 show an origami-type solar module array and wrinkle pattern for an airplane, a hexagonal tower according to an embodiment of the present invention.
  • 15 shows a 16-cell 70° array according to an embodiment of the present invention.
  • 16 shows the power output densities of a planar array and a 70° array according to an embodiment of the present invention.
  • the present invention comprises two or more unit solar battery cells and a conductive connector connecting the unit solar battery cells, wherein the conductive connector is a metal fiber-based connector having elasticity and flexibility. It is about a chubble solar module.
  • the stretchable solar module of the present invention can implement various shapes by interconnecting adjacent unit solar cells by the metal fiber-based connector having elasticity and flexibility.
  • the metal fiber-based connector may be a connector made of a metal fabric.
  • the direction in which the adjacent unit solar cells are connected and the metal fabric are connected in a biased state in an oblique direction, so that the elasticity due to tension or contraction of the metal fabric connector is improved.
  • origami-type folding is possible as adjacent unit solar cells are interconnected while forming a flexibly folded structure by tension or contraction of the metal fabric connector.
  • Tessellation is a structure in which planar figures are collected without overlapping and there are no gaps.
  • regular tessellation means a tessellation composed of only one regular polygon, and there are three cases in which a regular polygon is an equilateral triangle, a square, and a regular hexagon.
  • a regular tessellation structure can be formed by folding or stretching.
  • the stretchable solar module of the present invention can implement an origami-type flexible folding structure through a flexible and flexible metal fiber-based connector, so that it is possible to implement a solar module array in various designs and shapes, It can be confirmed that it can sufficiently respond to arbitrary curved surfaces and incident angles.
  • FIG. 2 shows the structure of a unit solar cell in the stretchable solar module 100 of the present invention
  • FIG. 3 shows a structure in which the unit solar cell is connected in the stretchable solar module of the present invention.
  • the unit solar cell includes a substrate layer 130; an insulator layer 120 formed on the substrate layer; a solar cell layer 110 formed on the insulator layer on which a solar cell is disposed; and a sealing material layer 140 disposed while sealing the upper surface of the solar cell layer to protect the solar cell.
  • the substrate layer a person skilled in the art may select and use a metal substrate, a polymer substrate, or the like. As an example, a stainless steel substrate may be used.
  • the sealing material layer it is also possible to use two types of silicone rubber including polydimethylsiloxane (PDMS) as the sealing material layer to replace the conventional EVA glass sealing material.
  • PDMS polydimethylsiloxane
  • the sealing material in the present invention should be made of a material that does not penetrate moisture, protects the solar cell from external impact, and transmits light without loss at the same time, and it must be a stretchable material.
  • the sealing material layer 140 may include the entire back surface of the solar cell and the connection electrode 200 to be sealed with silicone rubber, and the front surface of the solar cell module receiving sunlight may be sealed with transparent PDMS.
  • connection position of the connector is important to ensure the flatness of the solar module, and when the negative electrode and the positive electrode partially overlap, a shear force is generated in the unit solar cell and the unit solar cell may be damaged. Therefore, in order for the adjacent unit solar cells to be connected to each other, the negative electrode of the lower surface of the solar cell layer 110 of any one unit solar cell cell and one end of the connecting body 210 are connected, and the connecting body 210 is connected. The other end of is connected to the positive electrode of the upper surface of the solar cell layer 110 of another unit solar cell. This means that when the unit solar cells are connected, they can be flexibly and flexibly connected even if they are located above and below the solar cell layer, respectively, by using the stretchable and flexible metal fabric as described above.
  • connection of adjacent unit solar cells using a connector may be connected in series or in parallel, or may be connected in series-parallel.
  • the junction 220 may be formed through soldering, and the lower portion of the solar cell layer 110 except for the soldering junction 220 . is configured to be insulated with the insulating layer 120 .
  • Figure 4a shows the elasticity according to the tension direction of the metal fabric used in the stretchable solar module of the present invention.
  • the tensile strength is higher can check that That is, when the direction in which adjacent unit solar cells are connected and the metal fabric are connected in a biased state in the diagonal direction, elasticity due to tension or contraction of the metal fabric connector can be improved, and more preferably, an oblique angle When is 45°, elasticity due to tension or contraction is maximum.
  • the metal fabric may be a fabric manufactured using copper to form a joint by soldering while exhibiting high conductivity. More preferably, when a metal fabric impregnated with silicone rubber is used rather than a general metal fabric, the tensile strength is stronger, so that elasticity and flexibility can be greatly improved. In this case, platinum-catalyzed silicones may be used as the silicone rubber.
  • Figure 4b shows the stress-strain test results, the results of the metal fabric sheet in two different force directions (90 ° and 45 °). Comparing the stress-strain curve in tension along the warp or weft at 90° and the stress-strain curve in diagonal tension at 45°, it is clear that the extension length of the metal fabric under tension is determined by the material properties, 45 ° In the diagonal tension, it can be seen that the extension length is more than twice the tension in the 90° direction.
  • a solar module array is constructed using a right-angled triangle unit solar cell cell and an equilateral triangle unit solar cell cell, Current density and energy conversion efficiency were measured.
  • FIG. 5 and 6 respectively show electrical characteristics after stretching and folding of the solar module array to which two unit solar cells are connected, compared with the original solar array.
  • FF fill factor
  • Eff electrical efficiency
  • FIG. 6 it was found that fill factor (FF) and open circuit voltage (Voc) slightly decreased after folding. From these results, it can be confirmed that the unit solar cell can be easily stretched or folded without damage, and that it can be easily restored to its original shape after deformation. However, all parameters measured during the folding and stretching tests remained within ⁇ 0.03% of the original standard array, which is negligible given that the energy conversion efficiency changed by approximately ⁇ 0.01% in both strain types.
  • the wrinkle line of the tessellation is determined by the formation of a unit solar cell.
  • a photovoltaic module array having two model types including a right triangle and an equilateral triangle is configured and shown in FIG. 7 .
  • model 1 is a rotation pattern
  • model 2 is a linear pattern.
  • FIG. 8 shows the current density according to voltage application for each model of the solar module array shown in FIG. 7
  • FIG. 9 is a right-angled triangle and equilateral triangle unit solar cell 1 cell and 4 cell arrays, voltage applied shows the current density according to
  • FIG. 10 shows the energy conversion efficiency of a right-angled triangle and an equilateral triangle unit solar cell.
  • FIG. 11 shows a 64 cell tessellation structure solar module array having a right-angled triangle and an equilateral triangle.
  • the 64 cell tessellation structure solar module array of FIG. 11 is serially connected, and the total area of the module is 231 cm 2 (15.2 cm ⁇ 15.2 cm), but the spacing between cells is the maximum coverage of the area. was made as small as possible to ensure
  • a substrate and a sealing material (PDMS) are used in a solar module, rigid substrates used in conventional solar panels such as glass and frames are not required, and as a result, c-Si solar cells can be produced. can Accordingly, the solar module array can be freely formed on any surface.
  • FIG. 12 shows energy conversion efficiency under outdoor conditions based on the number of unit solar cells in the array.
  • the energy conversion efficiency was found to be in the range of 14 ⁇ 16%, and it was found to be similar regardless of the number of cells. This is judged to be a result of loss of serial connection due to mismatch between cells and climate parameters such as dust and clouds, which are lower than the values obtained in the solar simulator presented in Fig. It is possible to overcome by classifying unit solar cells before
  • FIG. 13 and 14 show an origami solar module array and wrinkle pattern for an airplane, a hexagonal tower.
  • the straight and dotted lines shown in the diagram represent the mountain and valley folding lines of the origami pattern, and an origami-type solar module array can be manufactured without difficulty.
  • the solar module array of the tessellation structure consisting of 16 right-angled triangular unit solar cells has an area of 52 cm 2 and is connected in parallel and in series.
  • FIG. 15 shows such a 16cell 70° array
  • FIG. 16 shows a comparison of power output densities between a planar array and a 70° array. Since the luminous intensity of sunlight decreases as the AOI increases, the calculated value reflecting the luminous intensity is shown in FIG. 16 , as shown in FIG. 16 , the electrical output based on the AOI decreases, but on average, the 70° array increases more per day compared to the planar array. It can be seen that high electrical output is produced. That is, the origami-type tessellation-structured solar module array can produce a higher average electrical output when used under omnidirectional lighting and various lighting intensity conditions commonly found in daily life.
  • the unit sun has a flexible folding structure without loss of area so that it can have various shapes and sizes in response to flexibility, various sizes, lighting conditions such as indoor and partially shaded environments, and solar conditions with a change in incident angle. It is possible to provide a stretchable photovoltaic module in which battery cells are interconnected, and through these various shapes, it is possible to output higher power on average than a planar module. Accordingly, it is expected that the present invention can extend sunlight to other applications of urban environments and flexible and flexible electrical devices.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Sustainable Energy (AREA)
  • Photovoltaic Devices (AREA)

Abstract

La présente invention concerne un module solaire étirable qui peut être monté sur des surfaces de montage de formes diverses, et l'invention concerne un module solaire étirable comprenant : deux ou plus de deux photopiles unitaires ; et un connecteur conducteur destiné à connecter les photopiles unitaires, le connecteur conducteur étant un connecteur à base de fibres métalliques présentant une élasticité et une flexibilité. Selon la présente invention, un module solaire étirable destiné à connecter des photopiles unitaires les unes aux autres dans une structure pliable flexible sans perte d'une surface peut être fourni pour présenter diverses formes et tailles en correspondance avec la flexibilité, diverses tailles, des conditions d'éclairage telles que celles des environnements intérieurs et partiellement ombragés, des conditions solaires qui présentent des changements d'angle d'incidence, et similaires, et une puissance supérieure à celle d'un module planaire, en moyenne, peut être délivrée à travers ces diverses formes.
PCT/KR2020/016199 2020-07-08 2020-11-17 Module solaire étirable WO2022010048A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020200084226A KR20220006361A (ko) 2020-07-08 2020-07-08 테셀레이션 구조의 태양전지
KR10-2020-0084226 2020-07-08

Publications (1)

Publication Number Publication Date
WO2022010048A1 true WO2022010048A1 (fr) 2022-01-13

Family

ID=79553288

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2020/016199 WO2022010048A1 (fr) 2020-07-08 2020-11-17 Module solaire étirable

Country Status (2)

Country Link
KR (1) KR20220006361A (fr)
WO (1) WO2022010048A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130183789A1 (en) * 2010-05-28 2013-07-18 Solarworld Innovations Gmbh Method for Contacting and Connecting Solar Cells
US20140111711A1 (en) * 2011-07-11 2014-04-24 Fujifilm Corporation Conductive sheet, touch panel, display device, method for producing said conductive sheet, and non-transitory recording medium
KR20160116895A (ko) * 2015-03-31 2016-10-10 코오롱인더스트리 주식회사 휴대용 유기태양전지 모듈체
WO2017110402A1 (fr) * 2015-12-25 2017-06-29 スフェラーパワー株式会社 Structure tissée triaxiale conductrice et structure tissée triaxale avec dispositif électronique l'utilisant
KR20190103350A (ko) * 2017-06-16 2019-09-04 하이어 디멘션 머티리얼즈, 인크. 대규모로 접속된 개별 솔라셀

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101144038B1 (ko) 2010-11-11 2012-05-24 현대자동차주식회사 곡면형 염료감응 태양전지 및 그 제조방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130183789A1 (en) * 2010-05-28 2013-07-18 Solarworld Innovations Gmbh Method for Contacting and Connecting Solar Cells
US20140111711A1 (en) * 2011-07-11 2014-04-24 Fujifilm Corporation Conductive sheet, touch panel, display device, method for producing said conductive sheet, and non-transitory recording medium
KR20160116895A (ko) * 2015-03-31 2016-10-10 코오롱인더스트리 주식회사 휴대용 유기태양전지 모듈체
WO2017110402A1 (fr) * 2015-12-25 2017-06-29 スフェラーパワー株式会社 Structure tissée triaxiale conductrice et structure tissée triaxale avec dispositif électronique l'utilisant
KR20190103350A (ko) * 2017-06-16 2019-09-04 하이어 디멘션 머티리얼즈, 인크. 대규모로 접속된 개별 솔라셀

Also Published As

Publication number Publication date
KR20220006361A (ko) 2022-01-17

Similar Documents

Publication Publication Date Title
JP3792867B2 (ja) 太陽電池モジュール、太陽電池アレイ及び太陽光発電装置の施工方法
WO2011078630A2 (fr) Dispositif de génération d'énergie solaire
US20220149226A1 (en) Flexible photovoltaic assembly and manufacturing method therefor
EP1172863A2 (fr) Procédé pour installer des modules de cellules solaires et module de cellules solaires
CN101816074A (zh) 屋顶光伏系统
CN102804402A (zh) 太阳能木瓦系统
WO2018052222A1 (fr) Panneaux solaires flexibles
WO2013100498A1 (fr) Connecteur et module de cellule solaire le comprenant
KR101351542B1 (ko) 태양전지를 가지는 차양 장치
KR20190120046A (ko) 광 발전 기와 및 광 발전 시스템
Sim et al. Origami-foldable tessellated Crystalline-Si solar cell module with metal textile-based stretchable connections
CN108023537A (zh) 一种彩钢瓦屋顶光伏组件结构
WO2013162302A1 (fr) Appareil photovoltaïque
WO2022010048A1 (fr) Module solaire étirable
KR100357905B1 (ko) 건축 외장용 태양광기전 모듈
WO2013077673A1 (fr) Appareil à cellules photovoltaïques
JP3633944B2 (ja) 太陽電池モジュールおよびそれを用いた太陽電池アレイ
KR20110007272A (ko) 태양광 발전 겸용 커튼 장치
WO2012165705A1 (fr) Châssis pour fenêtre de cellules photovoltaïques intégrée dans un bâtiment, et fenêtre de cellules photovoltaïques intégrée dans un bâtiment utilisant ce châssis
KR102137989B1 (ko) 태양광 발전 설비
WO2020013509A1 (fr) Générateur d'énergie solaire et store générant de l'énergie solaire
WO2022102873A1 (fr) Réseau de cellules solaires à suivi de source de lumière et système de production d'énergie solaire l'utilisant
WO2013094939A1 (fr) Module de cellules solaires
JP2007180065A (ja) 太陽電池アレイ
WO2022265336A1 (fr) Module de lumière solaire comprenant une structure d'absorption d'impact

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20944387

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20944387

Country of ref document: EP

Kind code of ref document: A1