WO2015003600A1 - Batterie solaire mwt - Google Patents

Batterie solaire mwt Download PDF

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Publication number
WO2015003600A1
WO2015003600A1 PCT/CN2014/081779 CN2014081779W WO2015003600A1 WO 2015003600 A1 WO2015003600 A1 WO 2015003600A1 CN 2014081779 W CN2014081779 W CN 2014081779W WO 2015003600 A1 WO2015003600 A1 WO 2015003600A1
Authority
WO
WIPO (PCT)
Prior art keywords
solar cell
dot matrix
backlight
gate line
solar energy
Prior art date
Application number
PCT/CN2014/081779
Other languages
English (en)
Chinese (zh)
Inventor
路忠林
李质磊
盛雯婷
张凤鸣
Original Assignee
南京日托光伏科技有限公司
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 南京日托光伏科技有限公司 filed Critical 南京日托光伏科技有限公司
Publication of WO2015003600A1 publication Critical patent/WO2015003600A1/fr

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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
    • H01L31/02—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
    • H01L31/022441—Electrode arrangements specially adapted for back-contact solar cells
    • H01L31/02245—Electrode arrangements specially adapted for back-contact solar cells for metallisation wrap-through [MWT] type 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 utility model relates to a battery, in particular to a ⁇ solar battery.
  • the conventional solar cell positive and negative electrodes are respectively located on the light receiving surface and the backlight surface of the battery sheet.
  • the electrode located on the front side of the battery block blocks the light receiving surface, reduces the light receiving area, and affects the photoelectric conversion efficiency of the solar cell.
  • a metal perforated silicon solar cell is a solar cell that solves the problem that the light-receiving surface of a conventional solar cell is blocked by the main gate line.
  • the MWT solar cell leads the electrode located on the front side of the solar cell to the backlight of the solar cell through the via electrode, thereby eliminating the occlusion of the light receiving surface by the main gate line.
  • the object of the present invention is to solve the problem that the solar cell printed by the prior art has few conductive vias, the gate line is far from the hole, and the power loss is large. .
  • the technical scheme adopted by the utility model is: a Li ⁇ solar cell, comprising a solar cell film, the solar cell chip is provided with a lattice hole of k X k , wherein k 5 and k are integers, and the dot matrix hole runs vertically
  • the current collected by the grating line reaches the k X k electrode contact point of the backlight through the lattice hole
  • the lattice hole is a columnar or tapered structure
  • the backlight surface of the solar cell is arranged in a 4 ⁇ 4 dot matrix arrangement.
  • the back electrode, the back electrode and the aluminum back field of the solar cell backlight surface are connected.
  • the light-receiving surface of the solar cell sheet is provided with a 5 x 5 dot matrix hole.
  • the light-receiving surface of the solar cell sheet is provided with a 6 x 6 dot matrix hole.
  • the pitch of the dot matrix is 30. 8 let.
  • the back electrode spacing is 33. 5mm.
  • the utility model adopts a hole array with a lattice arrangement of k X k, k ⁇ 5, k as an integer, and the distance between each silver grid line and the hole is closer, collecting The current is smaller,
  • the gate line can be designed to be finer, and the total area of the gate line is reduced, resulting in a smaller blackout area of the gate line, lower consumption of silver paste, and higher battery conversion efficiency.
  • FIG. 1 is a schematic structural view of a light receiving surface according to Embodiment 1 of the present invention.
  • Embodiment 2 is a schematic structural view of a backlight surface according to Embodiment 1 of the present invention.
  • a Li T solar cell includes a solar cell sheet 1 , and the solar cell sheet 1 is provided with a 5 X 5 dot matrix hole 2 , and the dot matrix hole 2 vertically penetrates the solar cell sheet 1 .
  • the dot matrix holes 2 are respectively connected to the front electrode of the light receiving surface 3 and the electrode contact point 5 of the backlight surface, and the current collected by the gate line 4 of the light receiving surface 3 passes through the dot matrix hole 2 to reach the 5 X 5 electrode contact point of the backlight surface (not shown).
  • the dot matrix hole 2 is a columnar or tapered structure
  • the back surface electrode 6 of the 4 x 4 dot array is arranged on the backlight surface of the solar cell, and the back electrode 6 is connected to the back electrode contact point through the conductive via hole, and the conductive via hole vertically penetrates the solar energy
  • the cell sheet 1, the back electrode 6 and the aluminum back field 7 of the backlight surface of the solar cell are connected.
  • the dot pitch of the dot matrix is 30. 8 mm. 5 ⁇
  • the back electrode spacing is 33. 5mm.
  • 5 ⁇ 5 dot matrix holes 2 vertically penetrating the solar cell sheet 1 may be first formed on the solar cell sheet 1, and conductive via holes may be formed on the solar cell sheet 1 by laser drilling, and then passed through the screen.
  • the printing process fills the conductive via hole with a conductive medium paste, and solidifies to form the dot matrix hole 2, and the conductive via hole has a columnar or tapered structure.
  • each silver gate line is closer to the hole, the collected current is smaller, the gate line can be designed to be finer, and the total area of the gate line is reduced, resulting in the grid line.
  • the shading area is smaller, the consumption of silver paste is lower, and the battery conversion efficiency is higher.
  • a Li T solar cell comprising a solar cell chip, the solar cell chip is provided with a 6 ⁇ 6 dot matrix hole, and the current collected by the light surface grating line passes through the lattice hole to reach the 6 ⁇ 6 electrode contact point of the backlight surface, and the dot matrix hole
  • the backlight surface of the solar cell is provided with a rear surface electrode arranged in a 4 ⁇ 4 dot matrix, and the back electrode is connected to the aluminum back field of the backlight surface of the solar cell.

Landscapes

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

Abstract

L'invention concerne une batterie solaire MWT comprenant une pièce de batterie solaire (1). La pièce à énergie solaire (1) est munie de k x k trous de matrice à points (2), où k est supérieur ou égal à 5 et k est un nombre entier. Les trous de matrice à points (2) s'étendent verticalement à travers la pièce à énergie solaire (1). Un courant collecté au niveau d'une ligne de grille (4) d'une surface réceptrice de lumière (3) atteint k × k points de contact d'électrode (5) d'une surface de rétroéclairage au moyen des trous de matrice à points (2), les trous de matrice à points (2) étant des structures colonnaires ou coniques. La surface de rétroéclairage de la pièce à énergie solaire (1) est munie d'électrodes de surface arrière (6) agencées en une matrice à 4 x 4 points et les électrodes de surface arrière (6) sont connectées à un champ de surface arrière en aluminium (7) sur la surface de rétroéclairage d'une énergie solaire. Grâce à l'adoption d'une telle manière de conception, la zone d'écran à la lumière de la ligne de grille sur la surface réceptrice de lumière est plus petite, la consommation de pâte d'argent est plus basse et l'efficacité de conversion photoélectrique est plus élevée.
PCT/CN2014/081779 2013-07-08 2014-07-07 Batterie solaire mwt WO2015003600A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201320405597.9 2013-07-08
CN201320405597.9U CN203423193U (zh) 2013-07-08 2013-07-08 一种mwt太阳能电池

Publications (1)

Publication Number Publication Date
WO2015003600A1 true WO2015003600A1 (fr) 2015-01-15

Family

ID=50022284

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2014/081779 WO2015003600A1 (fr) 2013-07-08 2014-07-07 Batterie solaire mwt

Country Status (3)

Country Link
CN (1) CN203423193U (fr)
TW (1) TWM481487U (fr)
WO (1) WO2015003600A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203423193U (zh) * 2013-07-08 2014-02-05 南京日托光伏科技有限公司 一种mwt太阳能电池
CN104465806A (zh) * 2014-12-18 2015-03-25 浙江鸿禧能源股份有限公司 一种太阳能电池片正电极栅线结构
CN109545870A (zh) * 2018-11-20 2019-03-29 浙江晶盛机电股份有限公司 一种正六边形mwt太阳能电池片
CN209418516U (zh) * 2018-11-20 2019-09-20 浙江晶盛机电股份有限公司 一种正六边形mwt太阳能电池半片及组件
CN109935642A (zh) * 2019-03-29 2019-06-25 江苏日托光伏科技股份有限公司 一种MWT与TopCon结合的太阳能电池及其制造方法
CN110707171A (zh) * 2019-10-24 2020-01-17 荣马实业有限公司 一种mwt背接触式高效光伏电池及生产工艺
CN110783421B (zh) * 2019-11-06 2021-07-27 维科诚（苏州）光伏科技有限公司 太阳能电池片及制备方法
CN110797426B (zh) * 2019-11-06 2021-07-27 维科诚（苏州）光伏科技有限公司 太阳能光伏组件及其制备方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100258177A1 (en) * 2009-06-22 2010-10-14 Jihoon Ko Solar cell and method of manufacturing the same
CN102938432A (zh) * 2012-10-30 2013-02-20 晶澳（扬州）太阳能科技有限公司 一种mwt太阳电池组件的制备方法
CN102956746A (zh) * 2012-10-31 2013-03-06 常州天合光能有限公司 Mwt电池的制造方法
CN102969399A (zh) * 2012-11-20 2013-03-13 上饶光电高科技有限公司 Mwt太阳能电池及其制作方法
CN103094369A (zh) * 2013-01-15 2013-05-08 常州亿晶光电科技有限公司 一种晶硅mwt太阳能电池
CN203423193U (zh) * 2013-07-08 2014-02-05 南京日托光伏科技有限公司 一种mwt太阳能电池

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100258177A1 (en) * 2009-06-22 2010-10-14 Jihoon Ko Solar cell and method of manufacturing the same
CN102938432A (zh) * 2012-10-30 2013-02-20 晶澳（扬州）太阳能科技有限公司 一种mwt太阳电池组件的制备方法
CN102956746A (zh) * 2012-10-31 2013-03-06 常州天合光能有限公司 Mwt电池的制造方法
CN102969399A (zh) * 2012-11-20 2013-03-13 上饶光电高科技有限公司 Mwt太阳能电池及其制作方法
CN103094369A (zh) * 2013-01-15 2013-05-08 常州亿晶光电科技有限公司 一种晶硅mwt太阳能电池
CN203423193U (zh) * 2013-07-08 2014-02-05 南京日托光伏科技有限公司 一种mwt太阳能电池

Also Published As

Publication number Publication date
CN203423193U (zh) 2014-02-05
TWM481487U (zh) 2014-07-01

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