WO2019210803A1 - Photovoltaic module and manufacturing method therefor - Google Patents

Photovoltaic module and manufacturing method therefor Download PDF

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Publication number
WO2019210803A1
WO2019210803A1 PCT/CN2019/084287 CN2019084287W WO2019210803A1 WO 2019210803 A1 WO2019210803 A1 WO 2019210803A1 CN 2019084287 W CN2019084287 W CN 2019084287W WO 2019210803 A1 WO2019210803 A1 WO 2019210803A1
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Prior art keywords
battery
edge
slices
photovoltaic module
conductive paste
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PCT/CN2019/084287
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French (fr)
Chinese (zh)
Inventor
闫新春
夏正月
徐洁
丁增千
邢国强
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阿特斯阳光电力集团有限公司
常熟阿特斯阳光电力科技有限公司
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Publication of WO2019210803A1 publication Critical patent/WO2019210803A1/en

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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
    • H01L31/02—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
    • H01L31/0248—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 characterised by their semiconductor bodies
    • H01L31/0256—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 characterised by their semiconductor bodies characterised by the material
    • H01L31/0264—Inorganic materials
    • H01L31/028—Inorganic materials including, apart from doping material or other impurities, only elements of Group IV of the Periodic Table
    • 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
    • H01L31/048—Encapsulation of modules
    • 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
    • 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
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/30—Electrical components
    • H02S40/36—Electrical components characterised by special electrical interconnection means between two or more PV modules, e.g. electrical module-to-module connection
    • 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
    • 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 invention relates to the field of photovoltaics, in particular to a photovoltaic module and a manufacturing method thereof.
  • the battery sheets are connected to each other by a solder ribbon, such that one end of the solder ribbon is connected to one electrode of the battery sheet, and the other end is connected to the other surface electrode of the adjacent battery sheet, thereby forming a battery serial connection.
  • traditional photovoltaic modules are limited by some factors (such as ribbon loss, layout and connection methods), making it difficult to generate more power generation efficiency. Increase in range.
  • the industry is gradually developing high-efficiency photovoltaic modules, which requires a large improvement in the traditional photovoltaic components, as much as possible to reduce the internal losses of the components, in order to improve efficiency.
  • the present invention provides a method of manufacturing a photovoltaic module to reduce internal loss, improve power generation efficiency, and improve production efficiency.
  • a method for manufacturing a photovoltaic module comprising:
  • the photovoltaic cell is subjected to a splitting process to obtain a plurality of independent elongated battery slices, and one side edge of each battery slice is provided with a main gate line electrode distributed along the edge;
  • the cells are connected in series and fabricated into a photovoltaic module.
  • the leftmost main gate line electrode is at least 20 mm from the left side edge
  • the rightmost main gate line electrode is not more than 10 mm from the right side edge.
  • providing conductive paste at the edge of each battery slice means that the conductive paste is simultaneously set to the edge of the plurality of battery slices by printing or coating.
  • providing conductive paste at the edge of each battery slice means that the conductive paste is disposed one by one to the edge of each battery slice by printing or coating.
  • providing a conductive paste at the edge of each battery slice includes printing or coating a conductive paste onto the main gate line electrode at the edge of each battery slice.
  • providing a conductive paste at the edge of each of the battery slices includes printing or coating a conductive paste to the back edge of each of the battery slices, the back edges being parallel to the edge where the main grid line electrodes are located.
  • the conductive adhesive adopts a movable dispensing nozzle to reciprocate directly above the battery slice to set the conductive paste at the edge of the battery slice.
  • the conductive paste is disposed along the edge of the battery slice and is distributed in a discontinuous point shape or a continuous linear shape.
  • the plurality of battery slices are respectively placed in a plurality of carrying boxes corresponding thereto, and the mobile dispensing nozzles are sequentially placed in each of the carrying boxes.
  • the battery is sliced to make a conductive paste setting.
  • the nozzle is outputted by a screw extrusion or a solenoid valve to discharge the conductive adhesive.
  • the laser is used to perform groove processing on the back surface of the photovoltaic cell along the extending direction of the main gate electrode, so that a plurality of channels are formed on the back surface of the photovoltaic cell and are isolated by the channel.
  • a number of battery zones, and the number of channels is one less than the number of main grid line electrodes.
  • the dicing treatment of the photovoltaic cell sheet comprises: arranging a plurality of independently movable adsorption stages under the photovoltaic cell sheet to respectively adsorb the plurality of battery areas, and then making the photovoltaic cell sheets through independent movement of the respective adsorption stages. Split along the channel location.
  • the invention adopts the slice cut by the standard cell sheet, and realizes the electrical connection by overlapping the slices at the edges, thereby eliminating the welding tape in the existing photovoltaic module and avoiding the welding tape. Loss and assembly problems, and the use of special layout methods to improve the overall aesthetics of photovoltaic modules and manufacturing efficiency.
  • Figure 1 is a schematic view of a photovoltaic cell sheet for use in the manufacture of a first embodiment of the present invention prior to splitting.
  • FIG. 2 is a process of processing a battery chip in a method of manufacturing a photovoltaic module according to a first embodiment of the present invention.
  • Figure 3 is a schematic view showing a split of a battery sheet in the first embodiment of the present invention.
  • Figure 4 is a front elevational view of a photovoltaic module in a first embodiment of the present invention.
  • Figure 5 is a partial enlarged view of the photovoltaic module of the first embodiment shown in Figure 4.
  • Figure 6 is a schematic illustration of the connections between the slices in the photovoltaic module of the present invention.
  • Figure 7 is a front elevational view of a photovoltaic module in a second embodiment of the present invention.
  • a first embodiment of the present invention provides a photovoltaic module 200 and a method of fabricating the same.
  • the battery slices in the photovoltaic module 200 are equally divided by a standard square single crystal cell 20, and the photovoltaic module 200 includes a plurality of parallel battery strings 50, and each battery
  • the series 50 includes a plurality of battery cells 60 arranged in a line, and the battery cells 60 are formed by connecting a plurality of the battery slices to each other.
  • the battery slices are divided into a shaped slice A and a rectangular slice B, and are in the same battery unit. There are two profiled slices A and a plurality of rectangular slices B, and the two profiled slices A are placed in an opposite manner.
  • the battery slices in each of the photovoltaic modules are equally divided by the same battery piece, and the battery cells are connected by edge overlap, and the way of soldering the connection is eliminated between the two.
  • the number of rectangular slices B in the same battery unit is more than the number of the shaped slices A, and the two shaped slices A are located on both sides of the rectangular slice B, and the width of the shaped slice A is
  • the rectangular slices B have the same width, both of which are 20-40 mm, a chamfered side edge S1 and a cutting side edge S2 which are parallel to each other, and the chamfered side edge S1 has a length due to the existence of a chamfer.
  • the cutting side edge S2 is overlapped with the rectangular slice B in the same battery unit 60, and the chamfered side edge S1 is inverted with the profiled slice A of the adjacent battery unit 60.
  • the corner side edges are overlapped, that is, the adjacent two battery cells 60 are overlapped with each other by the chamfered side edges of the two profiled slices.
  • each of the battery cells 60 are similar to those of the conventional conventional photovoltaic modules, and the overall visual effect does not produce a significant difference, and since the solder ribbon is eliminated
  • the connection makes the whole of the photovoltaic module more compact and more efficient, and each slice in each battery unit 60 always maintains a relative position and direction, and the overlapping connection can be directly performed without additional adjustment of the direction, thereby improving the effective efficiency.
  • a plurality of battery strings 50 in the photovoltaic module are connected in parallel with each other, and the first end and the end of each battery string are respectively connected to the first end and the end of the adjacent battery string 50 through a bus bar, wherein the battery string is connected to the battery string
  • the bus bar at the end 50 is provided with a plurality of tail portions 40 that expose the edges of the battery string 50.
  • the present invention also provides a manufacturing method of the photovoltaic module 200, as shown in FIG. 2, the manufacturing method includes:
  • a plurality of said battery strings are arranged in parallel and connected in parallel with each other.
  • providing a plurality of mutually parallel main gate line electrodes on the surface of the photovoltaic cell sheet mainly comprises: printing a plurality of parallel-arranged and equally spaced main gate line electrodes 13 on the surface of the photovoltaic cell sheet 20, wherein the rightmost main The gate electrode 13 is adjacent to the right edge of the cell and the distance between them is 0-10 mm, while the leftmost main gate electrode 13 is away from the left edge of the cell and the distance L between them is at least 20 mm (as shown in FIG. 1). ).
  • the single-crystal photovoltaic cell 20 is taken as an example, and the number of the main gate line electrodes 13 is 5-6, and is equally spaced, that is, when the main gate line electrodes are 5
  • the battery piece 20 will be split by five equal pieces (two pieces of profiled slice A and three pieces of rectangular slice B), and when the main grid line electrode 13 is six, the photovoltaic cell sheet 20 will be split by six equal pieces (two pieces of profiled slice A) And four rectangular slices B).
  • the shaped slice A and the rectangular slice B are both elongated and have the same width, and each of the shaped slice A and the rectangular slice B has only one main grid line electrode on the light receiving surface.
  • the manufacturing method further includes: performing a groove treatment on the back surface of the photovoltaic cell 20 with a laser along the extending direction of the main gate electrode 13 before performing the splitting treatment on the photovoltaic cell sheet 20.
  • channels are formed on the back side of the photovoltaic cell, and the number of the channels is one less than the number of the main gate line electrodes 13. The location of the channel is shown in phantom in Figures 1 and 2.
  • the “split processing of the photovoltaic cell sheet” specifically includes: transporting the photovoltaic cell sheet 20 to the splitting station, and setting a plurality of independently movable under the photovoltaic cell sheet 20.
  • the adsorption stage 30 is configured to adsorb different regions of the photovoltaic cell sheet 20, and split the photovoltaic cell sheet 20 by the movement of the adsorption stage 30; after the splitting, the shape of the shaped slice A and the rectangular slice B are kept unchanged, and Transfer as a whole. As shown in FIG.
  • the movement of the adsorption stage 30 refers to applying a downwardly downward pressure F to the adsorption stage 30 to cause relative movement with the adjacent adsorption stage 30, thereby causing the upper two adsorption stages 30 to be raised.
  • the cell sheet breaks at the channel.
  • the battery piece adopts a method of gradually splitting from the outside to the inside, that is, firstly applying a downward pressure F to the adsorption stage 30a at the first and last positions, and firstly cutting the two shaped slices A from the battery.
  • the on-chip splitting for the remainder of the cell, also applies an oblique pressure F to the adsorption stage 30 at its first and last positions, resulting in two rectangular slices B, and so on, to obtain all rectangular slices.
  • the angle ⁇ between the oblique downward pressure F and the horizontal plane is 5-10°.
  • the manufacturing method further includes: providing a conductive paste 70 along the extending direction of the main gate line electrode 13 before the slice overlap connection, the conductive paste 70 being disposed at the overlapping connection position Used to implement overlapping connections between slices, as shown in Figure 6.
  • the conductive paste 70 may be two timings for the arrangement of the conductive paste 70: first, before the splitting of the photovoltaic cell 20, when the conductive paste is printed on the back side of the photovoltaic cell 20; second, it may be in the photovoltaic cell.
  • the conductive paste is applied to the main grid line electrodes 13 on the surface of each of the sections (the profiled section A and the rectangular section B) at this time.
  • the conductive paste is disposed on the back side of the photovoltaic cell 20 by printing, but whether the conductive paste is disposed on the surface side or the back side, the conductive paste is along the The main gate line electrode 13 is extended in the longitudinal direction.
  • the method of manufacturing the photovoltaic module further includes: before the slices are sequentially overlapped and connected, a detection station is further provided for the slice sent to the splitting station (the shaped slice A and the rectangular slice B) ) Perform optical inspection. As shown in Figure 2, if all the slices are tested, all the slices will continue to be transferred to the next station as a whole. If unqualified slices are detected, the unqualified profiled slices A or The rectangular slice B is culled into an abnormal basket, and the remaining detected shaped slice A and rectangular slice B are moved to the shaped piece buffer basket and the rectangular piece buffer basket, respectively.
  • each battery cell includes two profiled slices A and three rectangular slices B
  • the rectangular slice buffer When the number of rectangular slices in the basket reaches three, the slices in the shaped sheet buffer basket and the rectangular sheet buffer basket will be taken out again and placed in order, and then flowed together as a whole into the overlapping connection station, and are handed over.
  • the stacking stations are overlapped with each other to form a battery unit 60, that is, when the profiled slice in the shaped sheet buffer basket and the rectangular slice in the rectangular sheet buffer basket can constitute a complete battery unit, the slice will be taken out again.
  • the buffer basket may not be used, but after the unqualified slice is detected, the unqualified slice is directly removed into the abnormal basket, and then A qualified slice is taken from the replenishing device for replenishment, replenished to the position of the rejected unqualified slice, and again constitutes a complete battery unit.
  • the battery piece can also be cut into six equal parts, thereby obtaining four rectangular slices B and two shaped slices A, which can flexibly adjust the cutting mode according to actual production requirements.
  • the number of battery strings in the photovoltaic module 200 cannot be less than the number of battery slices in the battery unit, that is, in the present invention, if the standard battery piece is obtained by five splicing pieces to obtain five battery slices, then the entire photovoltaic module
  • the number of mutually parallel battery strings is also set to at least five columns or more, as shown in FIG. 7, which is a second embodiment of the present invention.
  • there are 5 slices in each battery cell ie, the battery chip is The fifth-phase splitting piece
  • the number of battery strings connected in parallel with each other in the entire photovoltaic module is 6 columns, which differs from the first embodiment mainly in the difference in the number of battery strings, and the manufacturing methods are basically similar, and will not be described herein.
  • the slice cut by the standard cell sheet is used, and the electrical connection is realized by overlapping the slices at the edges, thereby eliminating the solder ribbon in the existing photovoltaic module, thereby avoiding Loss and assembly problems caused by the ribbon.
  • the manufacturing method of the present invention utilizes the shaped slice cut by the single crystal cell sheet, and combines the split, The way of patching not only improves the overall aesthetics and production efficiency of the photovoltaic module, but also avoids the waste of the profiled slice or the trouble of treating it separately.

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  • Condensed Matter Physics & Semiconductors (AREA)
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Abstract

Provided is a photovoltaic module, comprising several cell strings, wherein each of the cell strings includes several battery cells connected to each other in series; and a single battery cell comprises two opposite special-shaped slices and at least two rectangular slices located between the two special-shaped slices. The present invention uses slices obtained by equally cutting a standard battery piece, and realizes electrical connection by means of the mutual overlapping of the slices on an edge, thereby removing solder strips in existing photovoltaic modules, avoiding the problems of loss and assembly caused by the solder strips, and improving the overall aesthetics and the manufacturing efficiency of the photovoltaic module by using a special layout.

Description

光伏组件及其制造方法Photovoltaic module and method of manufacturing same
相关申请的交叉引用Cross-reference to related applications
本专利申请要求于2018年05月04日提交的、申请号为2018104209902、发明名称为“光伏组件及其制造方法”的中国专利申请的优先权，该申请的全文以引用的方式并入本文中。The present application claims priority to Chinese Patent Application No. 2018104209, filed on May 4, 20, the entire disclosure of which is incorporated herein by reference. .
技术领域Technical field
本发明涉及光伏领域，尤其涉及一种光伏组件及其制造方法。The invention relates to the field of photovoltaics, in particular to a photovoltaic module and a manufacturing method thereof.
背景技术Background technique
传统的光伏组件中，电池片之间通过焊带相互连接，使焊带的一端连接至电池片的一面电极，另一端连接至相邻电池片的另一面电极，从而形成电池串接。然而，随着市场对高功率组件的需求越来越高，传统光伏组件受限于自身的某些因素(如焊带损耗、版型及连接方式等)，使得其发电效率很难有较大幅度的提升。目前，业界逐渐开始研发高效光伏组件，这要求对传统光伏组件进行较大幅度的改善，尽可能的降低组件内部的损耗，以此来提升效率。In a conventional photovoltaic module, the battery sheets are connected to each other by a solder ribbon, such that one end of the solder ribbon is connected to one electrode of the battery sheet, and the other end is connected to the other surface electrode of the adjacent battery sheet, thereby forming a battery serial connection. However, as the market demand for high-power components is getting higher and higher, traditional photovoltaic modules are limited by some factors (such as ribbon loss, layout and connection methods), making it difficult to generate more power generation efficiency. Increase in range. At present, the industry is gradually developing high-efficiency photovoltaic modules, which requires a large improvement in the traditional photovoltaic components, as much as possible to reduce the internal losses of the components, in order to improve efficiency.
发明内容Summary of the invention
有鉴于此，本发明提供一种光伏组件的制造方法，以降低内部损耗、提高发电效率并改善生产效率。In view of this, the present invention provides a method of manufacturing a photovoltaic module to reduce internal loss, improve power generation efficiency, and improve production efficiency.
具体地，本发明是通过如下技术方案实现的：一种光伏组件的制造方法，包括：Specifically, the present invention is achieved by the following technical solutions: a method for manufacturing a photovoltaic module, comprising:
提供一光伏电池片，其具有左侧边缘和右侧边缘，且光伏电池片的正面由左至右分布有若干相互平行的主栅线电极；Providing a photovoltaic cell sheet having a left side edge and a right side edge, and a front surface of the photovoltaic cell sheet having a plurality of mutually parallel main gate line electrodes distributed from left to right;
对光伏电池片进行裂片处理，得到多个独立的长条形电池切片，并使每一电池切片的一侧边缘上设有沿该边缘分布的主栅线电极；The photovoltaic cell is subjected to a splitting process to obtain a plurality of independent elongated battery slices, and one side edge of each battery slice is provided with a main gate line electrode distributed along the edge;
在每个电池切片的边缘处设置导电胶；Providing a conductive paste at the edge of each battery slice;
将带有导电胶的电池切片交叠连接，形成电池串列；Stacking battery slices with conductive paste to form a battery string;
将所述电池串列连接并制成光伏组件。The cells are connected in series and fabricated into a photovoltaic module.
进一步地，所述若干相互平行的主栅线电极中，最左侧的主栅线电极距离所述左侧边缘至少20mm，最右侧的主栅线电极距离所述右侧边缘不超过10mm。Further, among the plurality of mutually parallel main gate line electrodes, the leftmost main gate line electrode is at least 20 mm from the left side edge, and the rightmost main gate line electrode is not more than 10 mm from the right side edge.
进一步地，在每个电池切片的边缘处设置导电胶，是指采用印刷或涂覆的方式将导电胶同时设置到多个电池切片的边缘处。Further, providing conductive paste at the edge of each battery slice means that the conductive paste is simultaneously set to the edge of the plurality of battery slices by printing or coating.
进一步地，在每个电池切片的边缘处设置导电胶，是指采用印刷或涂覆的方式将导电胶逐一设置到每个电池切片的边缘处。Further, providing conductive paste at the edge of each battery slice means that the conductive paste is disposed one by one to the edge of each battery slice by printing or coating.
进一步地，在每个电池切片的边缘处设置导电胶，包括将导电胶印刷或涂覆至每个电池切片边缘处的主栅线电极上。Further, providing a conductive paste at the edge of each battery slice includes printing or coating a conductive paste onto the main gate line electrode at the edge of each battery slice.
进一步地，在每个电池切片的边缘处设置导电胶，包括将导电胶印刷或涂覆至每个电池切片的背面边缘，该背面边缘与主栅线电极所在的边缘相互平行。Further, providing a conductive paste at the edge of each of the battery slices includes printing or coating a conductive paste to the back edge of each of the battery slices, the back edges being parallel to the edge where the main grid line electrodes are located.
进一步地，所述导电胶采用移动式的出胶嘴，在电池切片的正上方往复移动以将导电胶设置于电池切片的边缘处。Further, the conductive adhesive adopts a movable dispensing nozzle to reciprocate directly above the battery slice to set the conductive paste at the edge of the battery slice.
进一步地，所述导电胶沿电池切片的边缘设置，且呈断续的点状分布或连续的直线状分布。Further, the conductive paste is disposed along the edge of the battery slice and is distributed in a discontinuous point shape or a continuous linear shape.
进一步地，在裂片处理得到多个长条形电池切片后，将多个电池切片分别放入与之对应的多个承载盒内，并由所述移动式出胶嘴依次对每个承载盒内的电池切片进行导电胶设置。Further, after the plurality of elongated battery slices are obtained by the splitting process, the plurality of battery slices are respectively placed in a plurality of carrying boxes corresponding thereto, and the mobile dispensing nozzles are sequentially placed in each of the carrying boxes. The battery is sliced to make a conductive paste setting.
进一步地，所述出胶嘴通过螺杆挤胶或电磁阀喷胶的方式输出导电胶。Further, the nozzle is outputted by a screw extrusion or a solenoid valve to discharge the conductive adhesive.
进一步地，在对光伏电池片进行裂片处理之前，先用激光沿主栅线电极的延伸方向在光伏电池片背面进行刻槽处理，使光伏电池片背面形成若干槽道及由槽道隔离出的若干电池区，且所述槽道数量比主栅线电极数量少一个。Further, before the dicing treatment of the photovoltaic cell sheet, the laser is used to perform groove processing on the back surface of the photovoltaic cell along the extending direction of the main gate electrode, so that a plurality of channels are formed on the back surface of the photovoltaic cell and are isolated by the channel. A number of battery zones, and the number of channels is one less than the number of main grid line electrodes.
进一步地，对光伏电池片进行裂片处理，包括：在光伏电池片的下方设置若干可独立运动的吸附台，使其分别吸附住所述若干电池区，再通过各个吸附台的独立运动使光伏电池片沿所述槽道位置裂开。Further, the dicing treatment of the photovoltaic cell sheet comprises: arranging a plurality of independently movable adsorption stages under the photovoltaic cell sheet to respectively adsorb the plurality of battery areas, and then making the photovoltaic cell sheets through independent movement of the respective adsorption stages. Split along the channel location.
本发明采用由标准电池片等分切割得来的切片，通过切片之间在边缘处相互交叠的方式实现电性连接，取消了现有光伏组件中的焊带，避免了焊带所带来的损耗和装配问题，而且利用特殊的布局方式提升了光伏组件的整体美观性和生产制造的效率。The invention adopts the slice cut by the standard cell sheet, and realizes the electrical connection by overlapping the slices at the edges, thereby eliminating the welding tape in the existing photovoltaic module and avoiding the welding tape. Loss and assembly problems, and the use of special layout methods to improve the overall aesthetics of photovoltaic modules and manufacturing efficiency.
附图说明DRAWINGS
图1是用于制造本发明第一实施例中光伏电池片在裂片前的示意图。BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view of a photovoltaic cell sheet for use in the manufacture of a first embodiment of the present invention prior to splitting.
图2是本发明第一实施例光伏组件的制造方法中对电池片的处理过程。2 is a process of processing a battery chip in a method of manufacturing a photovoltaic module according to a first embodiment of the present invention.
图3是本发明第一实施例中电池片的裂片示意图。Figure 3 is a schematic view showing a split of a battery sheet in the first embodiment of the present invention.
图4是本发明第一实施例中光伏组件的正面视图。Figure 4 is a front elevational view of a photovoltaic module in a first embodiment of the present invention.
图5是图4所示第一实施例光伏组件的局部放大图。Figure 5 is a partial enlarged view of the photovoltaic module of the first embodiment shown in Figure 4.
图6是本发明光伏组件中切片之间的连接示意图。Figure 6 is a schematic illustration of the connections between the slices in the photovoltaic module of the present invention.
图7是本发明第二实施例中光伏组件的正面视图。Figure 7 is a front elevational view of a photovoltaic module in a second embodiment of the present invention.
具体实施方式detailed description
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本发明相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本发明的一些方面相一致的装置和方法的例子。Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. The following description refers to the same or similar elements in the different figures unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with aspects of the invention as detailed in the appended claims.
在本发明使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本发明。在本发明和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。The terminology used in the present invention is for the purpose of describing particular embodiments, and is not intended to limit the invention. The singular forms "a", "the" and "the" It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
如图1至图5所示，为本发明第一实施例，其提供了一种光伏组件200及其制造方法。本实施例中，所述光伏组件200内的电池切片由标准的四方形单晶电池片20经过等分切割而来，所述光伏组件200包括若干相互平行的电池串列50，且每一电池串列50内包含有若干沿直线排列的电池单元60，所述电池单元60由若干所述电池切片相互连接而构成，所述电池切片分为异形切片A及矩形切片B，且同一电池单元内具有两个异形切片A及多个矩形切片B，且该两个异形切片A以朝向相反的方式摆放。As shown in FIGS. 1 to 5, a first embodiment of the present invention provides a photovoltaic module 200 and a method of fabricating the same. In this embodiment, the battery slices in the photovoltaic module 200 are equally divided by a standard square single crystal cell 20, and the photovoltaic module 200 includes a plurality of parallel battery strings 50, and each battery The series 50 includes a plurality of battery cells 60 arranged in a line, and the battery cells 60 are formed by connecting a plurality of the battery slices to each other. The battery slices are divided into a shaped slice A and a rectangular slice B, and are in the same battery unit. There are two profiled slices A and a plurality of rectangular slices B, and the two profiled slices A are placed in an opposite manner.
所述光伏组件中的每一电池单元内的电池切片均由同一个电池片等分切割而来，所述电池单元之间通过边缘交叠实现连接，两者之间取消了焊带连接的方式，值得一提的是，在同一电池单元中的矩形切片B数量多于所述异形切片A数量，且所述两个异形切片A位于所述矩形切片B的两侧，异形切片A的宽度与矩形切片B的宽度相同，均 为20-40mm，所述异形切片A相互平行的一倒角侧边缘S1及一切割侧边缘S2，所述倒角侧边缘S1由于倒角的存在，因而长度略小于所述切割侧边缘S2，而且所述切割侧边缘S2与同一电池单元60内的矩形切片B交叠连接，而所述倒角侧边缘S1则与相邻电池单元60的异形切片A的倒角侧边缘交叠连接，也就是说，相邻两个电池单元60通过两个异形切片的倒角侧边缘相互交叠连接。从而，在整个光伏组件中，每一电池单元60的外形尺寸与现有的常规光伏组件中的标准电池片相仿，整体视觉效果上也并未产生十分明显的差异，而且由于免去了焊带连接，使得光伏组件的整体更加精简，效率更高，而且每一电池单元60内的各个切片始终保持相对位置和方向，无需额外调整方向便可直接进行交叠连接，提高了生效效率。The battery slices in each of the photovoltaic modules are equally divided by the same battery piece, and the battery cells are connected by edge overlap, and the way of soldering the connection is eliminated between the two. It is worth mentioning that the number of rectangular slices B in the same battery unit is more than the number of the shaped slices A, and the two shaped slices A are located on both sides of the rectangular slice B, and the width of the shaped slice A is The rectangular slices B have the same width, both of which are 20-40 mm, a chamfered side edge S1 and a cutting side edge S2 which are parallel to each other, and the chamfered side edge S1 has a length due to the existence of a chamfer. Less than the cutting side edge S2, and the cutting side edge S2 is overlapped with the rectangular slice B in the same battery unit 60, and the chamfered side edge S1 is inverted with the profiled slice A of the adjacent battery unit 60. The corner side edges are overlapped, that is, the adjacent two battery cells 60 are overlapped with each other by the chamfered side edges of the two profiled slices. Thus, in the entire photovoltaic module, the outer dimensions of each of the battery cells 60 are similar to those of the conventional conventional photovoltaic modules, and the overall visual effect does not produce a significant difference, and since the solder ribbon is eliminated The connection makes the whole of the photovoltaic module more compact and more efficient, and each slice in each battery unit 60 always maintains a relative position and direction, and the overlapping connection can be directly performed without additional adjustment of the direction, thereby improving the effective efficiency.
所述光伏组件中的若干电池串列50之间相互并联连接，每一电池串列的首、末端通过汇流条分别与相邻电池串列50的首、末端连接，其中，连接于电池串列50末端的汇流条设有若干外露出所述电池串列50边缘的尾部40。A plurality of battery strings 50 in the photovoltaic module are connected in parallel with each other, and the first end and the end of each battery string are respectively connected to the first end and the end of the adjacent battery string 50 through a bus bar, wherein the battery string is connected to the battery string The bus bar at the end 50 is provided with a plurality of tail portions 40 that expose the edges of the battery string 50.
另外，本发明还提供一种光伏组件200的制造方法，如图2所示，该制造方法包括：In addition, the present invention also provides a manufacturing method of the photovoltaic module 200, as shown in FIG. 2, the manufacturing method includes:
在光伏电池片的表面设置若干相互平行的主栅线电极；Providing a plurality of mutually parallel main gate line electrodes on the surface of the photovoltaic cell sheet;
对所述光伏电池片进行裂片处理，得到至少四个切片，并将所有切片进行整体传送；Performing a splitting process on the photovoltaic cell sheet to obtain at least four slices, and transferring all the slices in a whole;
将切片依次交叠连接，形成一电池单元；Stacking the slices in turn to form a battery unit;
将若干所述电池单元沿直线方向交叠连接成电池串列；Stacking a plurality of the battery cells in a linear direction to form a battery string;
将若干所述电池串列平行设置且彼此并联连接。A plurality of said battery strings are arranged in parallel and connected in parallel with each other.
其中，“在光伏电池片的表面设置若干相互平行的主栅线电极”，主要包括：在光伏电池片20表面印刷若干平行延伸且等间距设置的主栅线电极13，其中最右侧的主栅线电极13紧邻电池片右侧边缘且两者距离为0-10mm，而最左侧的主栅线电极13远离电池片的左侧边缘且两者距离L至少为20mm(如图1所示)。本发明优选实施例中，以单晶光伏电池片20为例，所述主栅线电极13的数量为5-6根，且等间距排布，也就是说，主栅线电极为5根时，电池片20将被五等分裂片(两片异形切片A和三片矩形切片B)，主栅线电极13为6根时，光伏电池片20将被六等分裂片(两片异形切片A和四片矩形切片B)。所述异形切片A和矩形切片B均为长条形且宽度相同，且每一异形切片A和矩形切片B的受光面上均仅设有一条主栅线电极。Wherein, "providing a plurality of mutually parallel main gate line electrodes on the surface of the photovoltaic cell sheet" mainly comprises: printing a plurality of parallel-arranged and equally spaced main gate line electrodes 13 on the surface of the photovoltaic cell sheet 20, wherein the rightmost main The gate electrode 13 is adjacent to the right edge of the cell and the distance between them is 0-10 mm, while the leftmost main gate electrode 13 is away from the left edge of the cell and the distance L between them is at least 20 mm (as shown in FIG. 1). ). In a preferred embodiment of the present invention, the single-crystal photovoltaic cell 20 is taken as an example, and the number of the main gate line electrodes 13 is 5-6, and is equally spaced, that is, when the main gate line electrodes are 5 The battery piece 20 will be split by five equal pieces (two pieces of profiled slice A and three pieces of rectangular slice B), and when the main grid line electrode 13 is six, the photovoltaic cell sheet 20 will be split by six equal pieces (two pieces of profiled slice A) And four rectangular slices B). The shaped slice A and the rectangular slice B are both elongated and have the same width, and each of the shaped slice A and the rectangular slice B has only one main grid line electrode on the light receiving surface.
在本发明较佳实施例中，所述制造方法还包括：在对所述光伏电池片20进行裂片处理之前，先用激光沿主栅线电极13延伸方向在光伏电池片20背面进行刻槽处理，从而 在光伏电池片背面形成槽道，且所述槽道数量比主栅线电极13数量少一个。所述槽道的位置如图1和图2中虚线所示。In a preferred embodiment of the present invention, the manufacturing method further includes: performing a groove treatment on the back surface of the photovoltaic cell 20 with a laser along the extending direction of the main gate electrode 13 before performing the splitting treatment on the photovoltaic cell sheet 20. Thereby, channels are formed on the back side of the photovoltaic cell, and the number of the channels is one less than the number of the main gate line electrodes 13. The location of the channel is shown in phantom in Figures 1 and 2.
在本发明较佳实施例中，所述“对所述光伏电池片进行裂片处理”，具体包括：将光伏电池片20运送至裂片工位，在光伏电池片20的下方设置若干可独立运动的吸附台30，用于吸附住光伏电池片20的不同区域，并通过吸附台30的运动将光伏电池片20掰裂；掰裂后保持异形切片A和矩形切片B摆放方向不变，将其作为一个整体进行传送。如图3所示，所述吸附台30的运动是指对吸附台30施加倾斜向下的压力F，使其与相邻的吸附台30产生相对运动，从而促使相邻两个吸附台30上方的电池片在所述槽道处发生断裂。其中，优选地方式为，所述电池片采用由外向内逐步掰裂的方式，即先对首、末位置上的吸附台30a施加倾斜向下的压力F，将两个异形切片A先从电池片上掰裂下来，对于电池片的剩余部分，同样对其首、末位置的吸附台30施加斜向压力F，得到两个矩形切片B，以此类推得到所有的矩形切片。值得一提的是，所述倾斜向下的压力F与水平面之间的角度θ为5-10°。In the preferred embodiment of the present invention, the “split processing of the photovoltaic cell sheet” specifically includes: transporting the photovoltaic cell sheet 20 to the splitting station, and setting a plurality of independently movable under the photovoltaic cell sheet 20. The adsorption stage 30 is configured to adsorb different regions of the photovoltaic cell sheet 20, and split the photovoltaic cell sheet 20 by the movement of the adsorption stage 30; after the splitting, the shape of the shaped slice A and the rectangular slice B are kept unchanged, and Transfer as a whole. As shown in FIG. 3, the movement of the adsorption stage 30 refers to applying a downwardly downward pressure F to the adsorption stage 30 to cause relative movement with the adjacent adsorption stage 30, thereby causing the upper two adsorption stages 30 to be raised. The cell sheet breaks at the channel. Preferably, the battery piece adopts a method of gradually splitting from the outside to the inside, that is, firstly applying a downward pressure F to the adsorption stage 30a at the first and last positions, and firstly cutting the two shaped slices A from the battery. The on-chip splitting, for the remainder of the cell, also applies an oblique pressure F to the adsorption stage 30 at its first and last positions, resulting in two rectangular slices B, and so on, to obtain all rectangular slices. It is worth mentioning that the angle θ between the oblique downward pressure F and the horizontal plane is 5-10°.
在本发明较佳实施例中，所述制造方法还包括：在切片交叠连接之前，沿所述主栅线电极13延伸方向设置导电胶70，所述导电胶70设置在交叠连接位置处，用于实现切片之间的交叠连接，如图6所示。具体来说，导电胶70的设置可以有两个时机：第一、可以在光伏电池片20的裂片处理之前，此时导电胶印刷于光伏电池片20的背面侧；第二、可以在光伏电池片20的裂片处理之后，此时导电胶需分别涂至每一切片(异形切片A和矩形切片B)表面的主栅线电极13上。当然，在可替代的实施例中，所述导电胶通过印刷的方式设置在光伏电池片20背面侧，但无论是将导电胶设于表面侧还是背面侧，所述导电胶均是沿所述主栅线电极13的长度方向延伸设置。In a preferred embodiment of the present invention, the manufacturing method further includes: providing a conductive paste 70 along the extending direction of the main gate line electrode 13 before the slice overlap connection, the conductive paste 70 being disposed at the overlapping connection position Used to implement overlapping connections between slices, as shown in Figure 6. Specifically, there may be two timings for the arrangement of the conductive paste 70: first, before the splitting of the photovoltaic cell 20, when the conductive paste is printed on the back side of the photovoltaic cell 20; second, it may be in the photovoltaic cell. After the slab treatment of the sheet 20, the conductive paste is applied to the main grid line electrodes 13 on the surface of each of the sections (the profiled section A and the rectangular section B) at this time. Of course, in an alternative embodiment, the conductive paste is disposed on the back side of the photovoltaic cell 20 by printing, but whether the conductive paste is disposed on the surface side or the back side, the conductive paste is along the The main gate line electrode 13 is extended in the longitudinal direction.
在本发明较佳实施例中，所述光伏组件的制造方法还包括：在切片依次交叠连接之前还设置检测工位，用于对裂片工位传来的切片(异形切片A和矩形切片B)进行光学检测，如图2所示，若所有切片均检测合格，则所有切片将作为一个整体继续传送至下一个工位，若检测到不合格的切片，则将不合格的异形切片A或矩形切片B剔除至一异常篮中，而将剩余的检测合格的异形切片A和矩形切片B分别移至异形片缓冲篮和矩形片缓冲篮中。具体来说，以电池片五等分裂片为例(即每个电池单元包含两个异形切片A和三个矩形切片B)，当异形片缓冲篮内的异形切片数量达到2个、矩形片缓冲篮内矩形切片的数量达到3个时，所述异形片缓冲篮、矩形片缓冲篮内的切片将被重新取出并按顺序摆放，然后作为一个整体共同流入交叠连接工位，并在交叠连接工位上完 成彼此交叠连接，形成一个电池单元60，即当异形片缓冲篮内异形切片与矩形片缓冲篮内矩形切片能够构成一个完整的电池单元时，所述切片将被重新取出并以一个整体流入交叠连接工位进行交叠连接处理。当然，除此之外，在本发明的另一种实施例中，也可不采用所述缓冲篮，而是在检测到不合格的切片后，将不合格切片直接剔除至异常篮中，然后再从补给装置中获取合格的切片进行补位，重新补充到被剔除的不合格切片的位置上，再次构成一个完整的电池单元。In a preferred embodiment of the present invention, the method of manufacturing the photovoltaic module further includes: before the slices are sequentially overlapped and connected, a detection station is further provided for the slice sent to the splitting station (the shaped slice A and the rectangular slice B) ) Perform optical inspection. As shown in Figure 2, if all the slices are tested, all the slices will continue to be transferred to the next station as a whole. If unqualified slices are detected, the unqualified profiled slices A or The rectangular slice B is culled into an abnormal basket, and the remaining detected shaped slice A and rectangular slice B are moved to the shaped piece buffer basket and the rectangular piece buffer basket, respectively. Specifically, taking the fifth slice of the battery piece as an example (ie, each battery cell includes two profiled slices A and three rectangular slices B), when the number of shaped slices in the shaped plate buffer basket reaches two, the rectangular slice buffer When the number of rectangular slices in the basket reaches three, the slices in the shaped sheet buffer basket and the rectangular sheet buffer basket will be taken out again and placed in order, and then flowed together as a whole into the overlapping connection station, and are handed over. The stacking stations are overlapped with each other to form a battery unit 60, that is, when the profiled slice in the shaped sheet buffer basket and the rectangular slice in the rectangular sheet buffer basket can constitute a complete battery unit, the slice will be taken out again. And the overlap connection process is performed by flowing into the overlap connection station as a whole. Of course, in addition to this, in another embodiment of the present invention, the buffer basket may not be used, but after the unqualified slice is detected, the unqualified slice is directly removed into the abnormal basket, and then A qualified slice is taken from the replenishing device for replenishment, replenished to the position of the rejected unqualified slice, and again constitutes a complete battery unit.
另外，所述第一实施例和第二实施例中，所述单个电池片最终经五等分裂片后，均可得到三个矩形切片B及两个异形切片A，所述异形切片A由于存在两个缺角，因而其表面积略小于所述矩形切片B。当然，所述电池片也可采用六等分切割，从而得到四个矩形切片B和两个异形切片A，这个可以根据实际生产需求而灵活调整切割方式。In addition, in the first embodiment and the second embodiment, after the single cell sheet is finally halved, three rectangular slices B and two profiled slices A can be obtained, and the profiled slice A exists due to existence. The two are not angled and thus have a surface area that is slightly smaller than the rectangular section B. Of course, the battery piece can also be cut into six equal parts, thereby obtaining four rectangular slices B and two shaped slices A, which can flexibly adjust the cutting mode according to actual production requirements.
所述光伏组件200内的电池串列数量不能小于所述电池单元内电池切片的数量，即本发明中，若所述标准电池片被五等分裂片得到五个电池切片，那么整个光伏组件内相互平行的电池串列的数量也至少设为五列或者更多列，如图7所示为本发明第二实施例，该实施例中每个电池单元内为5个切片(即电池片被五等分裂片)，但整个光伏组件内相互并联的电池串列数量为6列，其与第一实施例的差别主要在于电池串列数量的不同，制造方法基本相似，在此不再赘述。The number of battery strings in the photovoltaic module 200 cannot be less than the number of battery slices in the battery unit, that is, in the present invention, if the standard battery piece is obtained by five splicing pieces to obtain five battery slices, then the entire photovoltaic module The number of mutually parallel battery strings is also set to at least five columns or more, as shown in FIG. 7, which is a second embodiment of the present invention. In this embodiment, there are 5 slices in each battery cell (ie, the battery chip is The fifth-phase splitting piece), but the number of battery strings connected in parallel with each other in the entire photovoltaic module is 6 columns, which differs from the first embodiment mainly in the difference in the number of battery strings, and the manufacturing methods are basically similar, and will not be described herein.
本发明所述光伏组件内采用由标准电池片等分切割得来的切片，通过切片之间在边缘处相互交叠的方式实现电性连接，取消了现有光伏组件中的焊带，避免了焊带所带来的损耗和装配问题。不仅如此，为了更好地实现可持续性生产，尤其是对于标准的单晶电池片来说，本发明制造方法将单晶电池片切割而得的异形切片很好的利用了起来，结合裂片、补片的方式，不仅提升了光伏组件的整体美观性和生产效率，避免了异形切片的浪费或对其进行单独处理的麻烦。In the photovoltaic module of the invention, the slice cut by the standard cell sheet is used, and the electrical connection is realized by overlapping the slices at the edges, thereby eliminating the solder ribbon in the existing photovoltaic module, thereby avoiding Loss and assembly problems caused by the ribbon. Moreover, in order to better achieve sustainable production, especially for standard single crystal cells, the manufacturing method of the present invention utilizes the shaped slice cut by the single crystal cell sheet, and combines the split, The way of patching not only improves the overall aesthetics and production efficiency of the photovoltaic module, but also avoids the waste of the profiled slice or the trouble of treating it separately.
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明保护的范围之内。The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are made within the spirit and principles of the present invention, should be included in the present invention. Within the scope of protection.

Claims (8)

  1. 一种光伏组件的制造方法，其特征在于，包括：A method of manufacturing a photovoltaic module, comprising:
    提供一光伏电池片，其具有左侧边缘和右侧边缘，且光伏电池片的正面由左至右分布有若干相互平行的主栅线电极；Providing a photovoltaic cell sheet having a left side edge and a right side edge, and a front surface of the photovoltaic cell sheet having a plurality of mutually parallel main gate line electrodes distributed from left to right;
    对光伏电池片进行裂片处理，得到多个独立的长条形电池切片，并使每一电池切片的一侧边缘上设有沿该边缘分布的主栅线电极；The photovoltaic cell is subjected to a splitting process to obtain a plurality of independent elongated battery slices, and one side edge of each battery slice is provided with a main gate line electrode distributed along the edge;
    在每个电池切片的边缘处设置导电胶；Providing a conductive paste at the edge of each battery slice;
    将带有导电胶的电池切片交叠连接，形成电池串列；Stacking battery slices with conductive paste to form a battery string;
    将所述电池串列连接并制成光伏组件。The cells are connected in series and fabricated into a photovoltaic module.
  2. 如权利要求1所述的光伏组件的制造方法，其特征在于，所述若干相互平行的主栅线电极中，最左侧的主栅线电极距离所述左侧边缘至少20mm，最右侧的主栅线电极距离所述右侧边缘不超过10mm。The method of manufacturing a photovoltaic module according to claim 1, wherein among the plurality of mutually parallel main gate line electrodes, the leftmost main gate line electrode is at least 20 mm from the left side edge, and the rightmost side The main grid line electrode is no more than 10 mm from the right edge.
  3. 如权利要求1所述的光伏组件的制造方法，其特征在于，在每个电池切片的边缘处设置导电胶，是指采用印刷或涂覆的方式将导电胶同时设置到多个电池切片的边缘处。The method of manufacturing a photovoltaic module according to claim 1, wherein the providing of the conductive paste at the edge of each of the battery slices means that the conductive paste is simultaneously set to the edge of the plurality of battery slices by printing or coating. At the office.
  4. 如权利要求1所述的光伏组件的制造方法，其特征在于，在每个电池切片的边缘处设置导电胶，是指采用印刷或涂覆的方式将导电胶逐一设置到每个电池切片的边缘处。A method of manufacturing a photovoltaic module according to claim 1, wherein the provision of the conductive paste at the edge of each of the battery slices means that the conductive paste is disposed one by one to the edge of each of the battery slices by printing or coating. At the office.
  5. 如权利要求1所述的光伏组件的制造方法，其特征在于，在每个电池切片的边缘处设置导电胶，包括将导电胶印刷或涂覆至每个电池切片边缘处的主栅线电极上。A method of fabricating a photovoltaic module according to claim 1, wherein a conductive paste is provided at an edge of each of the battery slices, comprising printing or coating a conductive paste onto the main gate electrode at the edge of each of the battery slices. .
  6. 如权利要求1所述的光伏组件的制造方法，其特征在于，在每个电池切片的边缘处设置导电胶，包括将导电胶印刷或涂覆至每个电池切片的背面边缘，该背面边缘与主栅线电极所在的边缘相互平行。A method of manufacturing a photovoltaic module according to claim 1, wherein a conductive paste is provided at an edge of each of the battery slices, comprising printing or coating a conductive paste to a back edge of each of the battery slices, the back edge being The edges of the main grid line electrodes are parallel to each other.
  7. 如权利要求1所述的光伏组件的制造方法，其特征在于，在对光伏电池片进行裂片处理之前，先用激光沿主栅线电极的延伸方向在光伏电池片背面进行刻槽处理，使光伏电池片背面形成若干槽道及由槽道隔离出的若干电池区，且所述槽道数量比主栅线 电极数量少一个。The method of manufacturing a photovoltaic module according to claim 1 , wherein before the dicing treatment of the photovoltaic cell, the laser is used to perform groove processing on the back surface of the photovoltaic cell along the extending direction of the main gate electrode to enable photovoltaic A plurality of channels and a plurality of battery regions separated by the channels are formed on the back side of the battery sheet, and the number of the channels is one less than the number of the main grid lines.
  8. 如权利要求7所述的光伏组件的制造方法，其特征在于，对光伏电池片进行裂片处理，包括：在光伏电池片的下方设置若干可独立运动的吸附台，使其分别吸附住所述若干电池区，再通过各个吸附台的独立运动使光伏电池片沿所述槽道位置裂开。The method of manufacturing a photovoltaic module according to claim 7, wherein the dicing treatment of the photovoltaic cell comprises: arranging a plurality of independently movable adsorption stations under the photovoltaic cell to respectively adsorb the plurality of cells The zones are then detached by the independent movement of the respective adsorption stations along the channel locations.
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