WO2017177726A1 - Module de cellule solaire et son procédé de fabrication, ensemble et système - Google Patents

Module de cellule solaire et son procédé de fabrication, ensemble et système Download PDF

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Publication number
WO2017177726A1
WO2017177726A1 PCT/CN2017/000123 CN2017000123W WO2017177726A1 WO 2017177726 A1 WO2017177726 A1 WO 2017177726A1 CN 2017000123 W CN2017000123 W CN 2017000123W WO 2017177726 A1 WO2017177726 A1 WO 2017177726A1
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WIPO (PCT)
Prior art keywords
solar cell
cell module
metal conductive
front surface
type solar
Prior art date
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Ceased
Application number
PCT/CN2017/000123
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English (en)
Chinese (zh)
Inventor
林建伟
季根华
刘志锋
孙玉海
张育政
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jolywood (Taizhou) Solar Technology Co Ltd
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Jolywood (Taizhou) Solar Technology Co Ltd
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Priority to JP2019600014U priority Critical patent/JP3220955U/ja
Publication of WO2017177726A1 publication Critical patent/WO2017177726A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
    • H10F19/80—Encapsulations or containers for integrated devices, or assemblies of multiple devices, having photovoltaic cells
    • H10F19/85—Protective back sheets
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
    • H10F19/90—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F71/00—Manufacture or treatment of devices covered by this subclass
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F71/00—Manufacture or treatment of devices covered by this subclass
    • H10F71/128—Annealing
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F77/00—Constructional details of devices covered by this subclass
    • H10F77/20—Electrodes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F77/00—Constructional details of devices covered by this subclass
    • H10F77/20—Electrodes
    • H10F77/206—Electrodes for devices having potential barriers
    • H10F77/211—Electrodes for devices having potential barriers for photovoltaic 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
    • Y02E10/547—Monocrystalline silicon PV 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
    • 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

  • the present invention relates to the field of solar cell technologies, and in particular, to a solar cell module, a preparation method thereof, a component, and a system.
  • a solar cell is a semiconductor device that converts solar energy into electrical energy.
  • metallization is a key step in the production process of solar cells, and photogenerated carriers must be efficiently collected by the conductive electrodes formed by metallization.
  • the most common metallization method for mass production of solar cells is the screen printing metal paste method, which is formed by printing silver paste or aluminum-doped silver paste through high-temperature sintering process to form functions such as electrical contact, electrical conduction, and solder interconnection. Metalization.
  • the front surface of the solar cell is generally printed with silver paste or aluminum-doped silver paste, but the price of silver paste or aluminum-doped silver paste is generally expensive, resulting in silver-containing paste in the solar cell.
  • the proportion of manufacturing costs remains high. Therefore, it is a key task to reduce the production cost of solar cells by finding a front metallization method that can reduce the amount of silver-containing slurry used while satisfying ohmic contact.
  • a large-area back aluminum electrode is provided on the back surface of a conventional P-type solar cell, but in order to meet the solderability requirements, a silver-containing back main gate electrode must be disposed therein, and the cost of the silver-containing paste is much higher than that of the aluminum paste. . If the back of the battery does not need to be soldered, the silver-backed main gate electrode can be eliminated, and the all-aluminum back electrode can be used, which not only reduces the cost but also increases the open circuit voltage of the battery.
  • a single-cell solar cell cannot be directly used as an energy source, and a plurality of single-cell batteries must be connected in series and tightly sealed to form a component to stably output electric energy.
  • the method of connecting the cells in series is to use a solder ribbon to solder the electrodes on the front and back sides of the adjacent cells, and performing two soldering operations on the cell not only reduces the yield but also causes a high fragmentation rate.
  • the purpose of the present invention is to provide a solar cell module and a system thereof for the deficiencies of the prior art.
  • the method and the component and the system, the solar cell module of the invention can significantly reduce the use amount of the silver-containing slurry, reduce the production cost of the solar cell, increase the open circuit voltage of the solar cell, and simultaneously, in the process of connecting the cell sheets in series,
  • the positive and negative electrodes of the cell have no soldering operation, which not only simplifies the production operation, increases the yield, but also reduces the fragmentation rate.
  • a solar cell module comprising a solar cell module and a back plate, the metal plate is embedded in the back plate, and the solar cell module comprises a P-type solar cell substrate and an N-type solar cell substrate alternately arranged, and the P-type solar cell substrate is in front of the substrate.
  • the negative electrode of the surface is connected to the positive electrode of the front surface of the N-type solar cell substrate; the solar cell module is disposed on the metal conductive plate.
  • the metal conductive plate is an aluminum plate or a copper plate.
  • the interval between the P-type solar cell substrate and the N-type solar cell substrate is no more than 5 mm.
  • the positioning device is arranged on the back plate.
  • the N-type solar cell substrate includes a front surface positive electrode, a front surface passivation anti-reflection film, a p+ doped region, an N-type crystalline silicon substrate, an n+ doped region, a back surface passivation film, and a back surface, in order from top to bottom.
  • the negative electrode; the P-type solar cell substrate includes a front surface negative electrode, a front surface passivation anti-reflection film, an n+ doped region, a P-type crystalline silicon substrate, and a back surface all-aluminum back from top to bottom.
  • the negative electrode of the front surface of the P-type solar cell substrate and the positive electrode of the front surface of the N-type solar cell substrate are connected by a wire
  • the negative electrode of the front surface of the P-type solar cell substrate comprises a segmented sub-gate and is disposed at a thermally conductive layer on the segmented sub-gate, the segmented sub-gate electrically connected to a doped region of a front surface of the P-type solar cell substrate;
  • the wire is electrically connected to the heat-sensitive conductive layer;
  • the positive electrode of the front surface of the solar cell substrate includes a segmented sub-gate and a heat-sensitive conductive layer disposed on the segmented sub-gate, the segmented sub-gate electrically connected to the doped region of the front surface of the N-type solar cell substrate;
  • a wire is electrically connected to the heat sensitive conductive layer.
  • the wire is provided with 60-120 wires, and the wire is tin-coated copper wire, tin-coated aluminum wire or tin-coated steel wire.
  • the wire has a diameter of 40-80 microns.
  • the solar cell module includes at least two solar cell modules and a first metal conductive plate, a second metal conductive plate, a third metal conductive plate, and a fourth metal conductive plate disposed in sequence on the back plate, first The metal conductive plate and the second metal conductive plate are insulated from each other, the third metal conductive plate and the fourth metal conductive plate are insulated from each other, and the second metal conductive plate and the third metal conductive plate are electrically connected to each other; the solar battery module
  • the utility model comprises a P-type solar cell substrate and an N-type solar cell substrate, wherein the negative electrode of the front surface of the P-type solar cell substrate and the positive electrode of the front surface of the N-type solar cell substrate are connected by a wire; wherein the front surface of one of the solar cell modules is upward
  • the first metal conductive plate and the second metal conductive plate are disposed, and the front surface of the other solar cell module is placed upward on the third metal conductive plate and the fourth metal conductive plate.
  • the invention also provides a preparation method of a solar cell module, comprising the following steps:
  • the wire connects the front surface negative electrode of the P-type solar cell substrate and the positive electrode of the front surface of the N-type solar cell substrate through the heat-sensitive conductive layer on the surface of the cell sheet.
  • the temperature of the heat treatment is 183 to 250 °C.
  • the invention also provides a solar cell module comprising a front layer material, a packaging material and a solar cell module which are sequentially connected from top to bottom, and the solar cell module is the above-mentioned solar cell module.
  • the present invention also provides a solar cell system comprising more than one solar cell module, the solar cell module being a solar cell module as described above.
  • Each battery module is composed of a P-type solar cell and an N-type solar cell, wherein a negative electrode of the P-type solar cell and a positive electrode of the N-type solar cell pass Wire connection.
  • the use of wire has the following two advantages: 1) no need to use the ribbon connection, saving the cost of materials and equipment; 2) the wire can replace the silver main grid and the secondary grid used in the prior art, which reduces the front shading loss and reduces the
  • the use cost of the silver-containing slurry can save about 50% of the silver-containing slurry consumption compared to the existing front metallization process.
  • the P-type solar cell replaces the existing silver back electrode and the back aluminum electrode structure with an all-aluminum back electrode, which not only reduces the use cost of the silver-containing paste but also increases the open circuit voltage of the battery.
  • the existing backplane is replaced by a backplane embedded with a metal conductive plate, and the battery module is placed on the metal conductive plate, and the metal conductive plates of the adjacent battery modules are connected to each other to complete the series connection between the battery modules. Repeat this step to get the solar cell module.
  • the positive and negative electrodes of the battery sheet are not welded, which not only simplifies the production operation, improves the production efficiency, but also reduces the fragmentation rate.
  • FIG. 1 is a schematic front view of a battery module in a solar cell module according to an embodiment of the invention.
  • FIG. 2 is a schematic cross-sectional view of a battery module in a solar cell module according to an embodiment of the present invention.
  • FIG 3 is a partial schematic view of a back plate embedded with a metal conductive plate in a solar cell module according to an embodiment of the invention.
  • FIG. 4 is a partial schematic view of a solar cell module according to an embodiment of the invention.
  • FIG. 5 is a partial cross-sectional view showing a solar cell module according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a regularly arranged non-continuous dot-shaped segmented sub-gate in a solar cell module according to an embodiment of the invention.
  • FIG. 7 is a schematic diagram of a non-continuous dot-shaped segmented sub-gate arranged in a misaligned manner in a solar cell module according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a laterally arranged non-continuous line segmented sub-gate in a solar cell module according to an embodiment of the invention.
  • FIG. 9 is a schematic diagram of a non-continuous line segmentation pair arranged vertically in a solar cell module according to an embodiment of the present invention. Schematic diagram of the grid.
  • N-type solar cell substrate 2. P-type solar cell substrate; 3. Metal wire; 31, N-segment sub-gate; 32, P-segment sub-gate; 33, heat-sensitive conductive layer; 41, first metal conductive a plate; 42, a second metal conductive plate; 43, a third metal conductive plate; 44, a fourth metal conductive plate; 5, a back plate.
  • the solar cell module in this embodiment refers to a back sheet including a metal conductive plate embedded therein and a solar cell sheet connected thereto.
  • a solar cell module of the present embodiment includes a solar cell module and a back plate 5, and a metal conductive plate is embedded on the back plate 5, and the metal conductive plate may be an aluminum plate or a copper plate.
  • the solar cell module includes a P-type solar cell substrate 2 and an N-type solar cell substrate 1 which are alternately arranged, and a negative electrode of a front surface of the P-type solar cell substrate 2 is connected with a positive electrode of a front surface of the N-type solar cell substrate 1; Set on a metal conductive plate.
  • the back plate 5 embedded with the metal conductive plate is provided with a positioning device for placing the battery module, so as to facilitate the installation of the positioning battery module.
  • the interval between the P-type solar cell substrate 2 and the N-type solar cell substrate 1 is not more than 5 mm.
  • a back plate embedded with a metal conductive plate is used to replace the existing back plate, and the battery module is placed on the metal conductive plate, and the metal conductive plates of the adjacent battery modules are connected to each other to complete the battery module. In tandem, repeat this step to get the solar cell module.
  • the positive and negative electrodes of the cell have no soldering operation, which not only simplifies the production operation, but also improves the production efficiency and reduces the fragmentation rate.
  • the negative electrode on the front surface of the P-type solar cell substrate 2 and the positive electrode on the front surface of the N-type solar cell substrate 1 are connected by a wire 3, and the negative electrode on the front surface of the P-type solar cell substrate 2 includes a P-segmented sub-gate 32 and a thermally conductive layer 33 disposed on the P-segmented sub-gate 32, the P-segmented sub-gate 32 being electrically connected to the doped region of the front surface of the P-type solar cell substrate 2; the wire 3 and the heat The sensitive conductive layer 33 is electrically connected; the positive electrode of the front surface of the N-type solar cell substrate includes an N-segment sub-gate 31 and a heat-sensitive conductive layer 33 disposed on the N-segment sub-gate 31, and the N-segment sub-gate 31 and the N-type Solar power The doped regions of the front surface of the cell substrate are electrically connected; the wires 3 are electrically connected to the heat-sensitive
  • the heat-sensitive conductive layer 33 is a solder paste conductive layer
  • the metal wire 3 is a metal wire coated with a heat-sensitive conductive material
  • the wire coated with the heat-sensitive conductive material may be selected from a tin-coated copper wire, a silver-coated copper wire, or a tin-coated aluminum wire.
  • the solder paste containing any one of tin, tin-lead alloy, tin-bismuth alloy or tin-lead-silver alloy.
  • a total of 60-120 wires 3 are provided, and the wire 3 has a diameter of 40-80 ⁇ m.
  • the use of wire has the following two advantages: 1) no need to use the ribbon connection, saving the cost of materials and equipment; 2) the wire can replace the silver main grid and the secondary grid used in the prior art, which reduces the front shading loss and reduces the
  • the use cost of the silver-containing slurry can save about 50% of the silver-containing slurry consumption compared to the existing front metallization process.
  • any two adjacent solar cell substrates one of which is a P-type solar cell substrate 2, the other is an N-type solar cell substrate 1, and the front surface of the N-type solar cell substrate 1 is a positive electrode
  • the back surface is a negative electrode; the front surface of the P-type solar cell substrate 2 is a negative electrode, and the back surface is a positive electrode; the positive electrode of the N-type solar cell substrate 1 and the negative electrode of the P-type solar cell substrate 2 are connected by a wire 3 .
  • the solar cell module includes at least two solar cell modules and a first metal conductive plate 41, a second metal conductive plate 42, and a third metal conductive plate disposed in sequence on the back plate 5.
  • 43 and the fourth metal conductive plate 44, the first metal conductive plate 41 and the second metal conductive plate 42 are insulated from each other, and the third metal conductive plate 43 and the fourth metal conductive plate 44 are insulated from each other, and the second metal conductive plate is insulated from each other.
  • the solar cell module comprises a P-type solar cell substrate 2 and an N-type solar cell substrate 1, a negative electrode of the front surface of the P-type solar cell substrate 2, and an N-type solar cell
  • the positive electrode of the front surface of the substrate 1 is connected by the wire 3; one of the front surfaces of the solar cell module is placed upward on the first metal conductive plate 41 and the second metal conductive plate 42, and the front surface of the other solar cell module is placed upward.
  • the three metal conductive plates 43 and the fourth metal conductive plate 44 are on.
  • the N-type solar cell substrate 1 includes, in order from top to bottom, a front surface passivation anti-reflection film, a p+ doped region, an N-type crystalline silicon substrate, an n+ doped region, a back surface passivation film, and a back surface silver.
  • the P-type solar cell substrate 2 includes, in order from top to bottom, a front surface passivation anti-reflection film, an n+ doped region, a P-type crystalline silicon substrate, and a back surface all-aluminum back electrode.
  • P-type solar cells use all aluminum
  • the back electrode replaces the existing silver back electrode and the back aluminum electrode structure, which not only reduces the use cost of the silver-containing paste but also increases the open circuit voltage of the battery.
  • a method for preparing a solar cell module of the embodiment includes the following steps:
  • an N-type solar cell substrate 1 and a P-type solar cell substrate 2 are prepared.
  • the N-type solar cell substrate 1 and the P-type solar cell substrate 2 may be a whole piece or a non-whole piece.
  • the N-type solar cell substrate 1 includes, in order from top to bottom, a front surface passivation anti-reflection film, a p+ doped region, an N-type crystalline silicon substrate, an n+ doped region, a back surface passivation film, and a back surface silver electrode.
  • the P-type solar cell substrate 2 includes a front surface passivation anti-reflection film, an n+ doped region, a P-type crystalline silicon substrate and a back surface aluminum electrode in order from top to bottom, and the back surface aluminum electrode covers the entire back surface (all-aluminum back electrode) ).
  • Both the back silver electrode of the N-type solar cell substrate 1 and the back aluminum electrode of the P-type solar cell substrate 2 were printed and dried, and no sintering treatment was performed. Then, the N-segment sub-gate 31 is printed on the front surface of the N-type solar cell substrate 1 using an aluminum-doped silver paste, and the P-segmented sub-gate 32 is printed on the front surface of the P-type solar cell substrate 2 using a silver paste.
  • the shape of the N-segment sub-gate 31 and the P-segment sub-gate 32 in this embodiment may be discontinuous dots or discontinuous lines.
  • the discontinuous dots in the adjacent segmented sub-gates may be a regular array, or as shown in FIG. 7, the discontinuous dots in the adjacent segmented sub-gates are misaligned.
  • the discontinuous lines in adjacent segmented sub-gates can be horizontally regular arrays.
  • the discontinuous lines in the adjacent segmented sub-gates are longitudinally regular arrays; the discontinuous lines in adjacent segmented sub-gates may also be misaligned.
  • the temperature-sensitive conductive layer 33 is printed on the N-segment sub-gate 31 and the P-segment sub-gate 32.
  • the heat conductive layer 33 is a solder paste.
  • the solder paste contains any one of tin, tin-lead alloy, tin-bismuth alloy or tin-lead-silver alloy.
  • the wire 3 is any one of a tin-clad copper wire, a tin-clad aluminum wire, or a tin-clad steel wire.
  • the wires 3 are parallel to each other, and a total of 60-120 strips are provided, and the cross section is circular, and the diameter thereof is 40-80 ⁇ m.
  • the N-type solar cell substrate 1 and the P-type solar cell substrate 2 connected by the wire 3 are heat-treated.
  • the heat treatment is infrared heating, and the peak temperature of the reflux is 183-250 degrees Celsius.
  • an ohmic contact is formed between the p+ doped region of the front surface of the N-type solar cell substrate 1, the N-segment sub-gate 31, the heat-sensitive conductive layer 33, and the wire 3, and the front surface of the P-type solar cell substrate 2
  • An ohmic contact is formed between the n+ doped region, the P segmented sub-gate 32, the thermistive conductive layer 33, and the wire 3, that is, the fabrication of the battery module of the present invention is completed.
  • the completed battery module is shown in Figure 1, and its cross-sectional view is shown in Figure 2.
  • the first metal conductive plate 41, the second metal conductive plate 42, the third metal conductive plate 43, and the fourth metal conductive plate 44 are sequentially disposed on the back plate 5.
  • the first metal conductive plate 41 and the second metal conductive plate 42 are insulated from each other, and the third metal conductive plate 43 and the fourth metal conductive plate 44 are insulated from each other, and the second metal conductive plate 42 and the third metal conductive plate are insulated from each other.
  • 43 is conductive to each other.
  • the front surface of the first battery module is placed upward on the first metal conductive plate 41 and the second metal conductive plate 42, and the front surface of the second battery module is placed upward on the third metal conductive plate 43 and the fourth metal conductive plate 44. Upper (as shown in Figures 4 and 5). In this way, the interconnection between the two battery modules is realized, and the solar battery module in which a plurality of battery modules are connected in series is obtained by repeating this step.
  • the backplane embedded with the metal conductive plate and the battery module connected thereto form the solar battery module described in this embodiment.
  • the embodiment further provides a solar cell module, which comprises a front layer material, a packaging material and a solar cell module which are sequentially connected from top to bottom, and the solar cell module is the above-mentioned solar cell module.
  • the structure and working principle of the solar cell module of the present embodiment use techniques well known in the art, and the improvement of the solar cell module provided by the present invention relates only to the above-mentioned solar cell module, and no other parts are modified. Therefore, this specification only details the solar cell module and its preparation method. Other components and working principles of the solar cell module will not be described herein.
  • the solar cell module of the present invention can be realized by those skilled in the art based on the contents described in the present specification.
  • the embodiment further provides a solar cell system comprising more than one solar cell module connected in series, and the solar cell module is a solar cell module as described above.
  • the structure and working principle of the solar cell system of the present embodiment use techniques well known in the art, and the solar cell system provided by the present invention The improvement is only related to the above solar cell module, and no other parts are modified. Therefore, this specification only details the solar cell module and its preparation method. Other components and working principles of the solar cell system will not be described here.
  • the solar cell system of the present invention can be realized by those skilled in the art based on the contents described in the present specification.

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Abstract

L'invention concerne un module de cellule solaire et son procédé de fabrication, un ensemble et un système. Le module de cellule solaire comprend des éléments de cellule solaire et une plaque arrière (5); des plaques conductrices métalliques (41, 42, 43, 44) sont incorporées sur la plaque arrière; les éléments de cellule solaire comprennent des substrats de cellule solaire de type P (2) et des substrats de cellule solaire de type N (1) qui sont agencés de manière alternée; une électrode négative sur la surface avant de chaque substrat de cellule solaire de type P est connectée à une électrode positive sur la surface avant de chaque substrat de cellule solaire de type N au moyen d'un fil métallique (3); les éléments de cellule solaire sont disposés sur les plaques conductrices métalliques. L'invention concerne également un procédé de fabrication du module de cellule solaire, un ensemble cellule solaire comprenant le module de cellule solaire, et un système de cellule solaire. Selon le module de cellule solaire, des bandes de soudure ne sont pas nécessaires pour une connexion, de telle sorte que les coûts de matériau et de dispositif sont réduits; des barres omnibus et des doigts d'argent utilisés dans l'état antérieur de la technique peuvent être remplacés par des fils métalliques, de telle sorte que les pertes d'ombrage sur les surfaces avant sont réduites, les coûts d'utilisation de la pâte contenant de l'argent sont réduits, et la consommation de pâte contenant de l'argent peut être réduite d'environ 50 %. Aucune opération de soudage n'est utilisée pour les électrodes positives et les électrodes négatives des éléments de cellule, de telle sorte que l'opération de production est simplifiée, l'efficacité de production est améliorée et le taux de rupture est réduit.
PCT/CN2017/000123 2016-04-14 2017-01-19 Module de cellule solaire et son procédé de fabrication, ensemble et système Ceased WO2017177726A1 (fr)

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JP2019600014U JP3220955U (ja) 2016-04-14 2017-01-19 太陽電池ユニット及びその製造方法、アセンブリ、システム

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CN201610230972.9 2016-04-14
CN201610230972.9A CN105845754A (zh) 2016-04-14 2016-04-14 一种太阳能电池模组及其制备方法和组件、系统

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CN113140647A (zh) * 2021-05-20 2021-07-20 成都晔凡科技有限公司 异质结太阳能电池片、光伏组件及制造方法
US11227962B2 (en) 2018-03-29 2022-01-18 Sunpower Corporation Wire-based metallization and stringing for solar cells
CN121985602A (zh) * 2026-04-07 2026-05-05 晶科能源(海宁)有限公司 光伏组件
CN122294594A (zh) * 2026-05-22 2026-06-26 浙江晶科能源有限公司 一种光伏组件

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