CN109560155B - Solar cell module and method for manufacturing same - Google Patents
Solar cell module and method for manufacturing same Download PDFInfo
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- CN109560155B CN109560155B CN201811637220.XA CN201811637220A CN109560155B CN 109560155 B CN109560155 B CN 109560155B CN 201811637220 A CN201811637220 A CN 201811637220A CN 109560155 B CN109560155 B CN 109560155B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000003466 welding Methods 0.000 claims abstract description 199
- 239000002131 composite material Substances 0.000 claims abstract description 64
- 239000005022 packaging material Substances 0.000 claims description 44
- 229910000679 solder Inorganic materials 0.000 claims description 43
- 239000000463 material Substances 0.000 claims description 21
- 238000005538 encapsulation Methods 0.000 claims description 14
- 238000005452 bending Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000002313 adhesive film Substances 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- 238000003475 lamination Methods 0.000 description 3
- 230000006727 cell loss Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
- H01L31/0508—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module the interconnection means having a particular shape
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention provides a manufacturing method of a solar cell module, which comprises the following steps: providing a front composite member comprising a front plate and a first bonding layer fixed on a first surface of the front plate; providing a rear composite member comprising a back plate and a second bonding layer fixed on a second surface of the back plate; providing a plurality of battery pieces, and placing the battery pieces between the first surface and the second surface to obtain a piece to be laminated; the battery piece corresponds to the position of the welding strip in the first welding strip layer and the second welding strip layer; pressure in the thickness direction of the to-be-laminated member is provided to fix the front composite member, the cell sheet, and the rear composite member as one body, thereby obtaining a solar cell module. The solar cell module and the manufacturing method thereof have the advantages that the traditional welding process is omitted, the operation is simple, the loss of the cell is reduced, the discharge of the cell is simple, and the production efficiency of the solar cell module is improved.
Description
Technical Field
The invention relates to the technical field of solar photovoltaic power generation, in particular to a solar cell module and a manufacturing method thereof.
Background
The lamination process of the solar cell module is an important component of the solar cell module manufacturing process. The existing lamination process of the solar cell module is to laminate and place a front plate, a front packaging adhesive film, a solar cell string layer, a rear packaging adhesive film and a back plate in a laminating machine, then to pump out air in the solar cell module in the laminating machine through vacuumizing, and then to heat the packaging adhesive film to melt the packaging adhesive film so as to bond the solar cell string layer, the front plate and the back plate together.
The solar cell string layer is obtained by welding the cell slices into strings and typesetting and connecting the strings. In the process, adverse effects such as cell loss and reworking of the manufacturing process are possibly caused at each stage, so that the production speed of the solar cell module is reduced.
In view of the foregoing, there is a need for an improved solar cell module and a method of manufacturing the same that solves the above-mentioned problems.
Disclosure of Invention
The invention aims to provide a solar cell module which reduces cell loss and improves production efficiency and a manufacturing method thereof.
In order to achieve the above object, the present invention provides a method for manufacturing a solar cell module, comprising the steps of:
providing a light-permeable front composite, wherein the front composite comprises a front plate and a first welding strip layer fixed on a first surface of the front plate, the first welding strip layer comprises a plurality of first welding strip groups, and the first welding strip groups comprise a plurality of first welding strips which are arranged at intervals;
providing a rear composite member, wherein the rear composite member comprises a back plate and a second welding strip layer fixed on a second surface of the back plate, the second welding strip layer comprises a plurality of second welding strip groups, and the second welding strip groups comprise a plurality of second welding strips which are arranged at intervals; at least one of the first welding strip and the second welding strip is provided with a connecting part formed by bending away from the composite part at the tail end of the first welding strip and the second welding strip;
providing a plurality of battery pieces, and placing the battery pieces between the first surface and the second surface to obtain a piece to be laminated; the plurality of battery pieces are arranged into a plurality of battery piece strings which are arranged side by side, the battery pieces correspond to the first welding strip group and the second welding strip group in position, the front main grid of each battery piece is contacted with the first welding strip, and the back main grid of each battery piece is contacted with the second welding strip;
providing a pressure in the thickness direction of the to-be-laminated member to fix the front composite member, the cell sheet and the rear composite member as one body, thereby obtaining a solar cell module; for two adjacent battery pieces on the same battery piece string, the first welding strip positioned on the front face of one battery piece is interconnected with the second welding strip positioned on the back face of the other battery piece through the connecting part.
As a further improvement of the present invention, the front plate includes a front light-transmitting plate and a first encapsulating material layer fixed on one side surface of the front light-transmitting plate, where the first surface is one side surface of the first encapsulating material layer facing away from the front light-transmitting plate; the backboard comprises a back support plate and a second packaging material layer fixed on one side surface of the back support plate, wherein the second surface is one side surface of the second packaging material layer, which is away from the back support plate.
As a further improvement of the present invention, the method for manufacturing a solar cell module further includes:
providing a set temperature while providing pressure to melt the welding materials on the surfaces of the first welding strip and the second welding strip so as to realize welding; wherein the first encapsulation material layer and the second encapsulation material layer are melted at the set temperature.
As a further improvement of the present invention, the placing the battery sheet between the first surface and the second surface includes:
selecting one of the front composite piece and the rear composite piece as a battery piece arrangement bottom plate, and placing the side, provided with the welding strip, of the battery piece arrangement bottom plate upwards;
the method comprises the steps that battery pieces are placed on positions of each welding strip group on a battery piece arrangement bottom plate one by one, wherein each welding strip comprises a portion to be welded, which exceeds the edge of each battery piece, and if the portion to be welded is non-bent, the length of the portion to be welded is larger than the thickness of the welding strip and smaller than the distance between two adjacent battery pieces in the same battery piece string; if the part to be welded is bent, a gap exists between the part to be welded and the edge of the battery piece;
the other of the front and rear composites is placed on the battery plate as an upper cover plate.
As a further improvement of the invention, the welding strips on the battery piece arrangement bottom plate are provided with connecting parts which are formed by bending, and the welding strips on the upper cover plate extend linearly.
As a further improvement of the present invention, the provision of a light-permeable front composite comprises:
providing the front light-transmitting plate;
providing the first packaging material layer and placing the first packaging material layer on one side surface of the front light-transmitting plate;
providing a plurality of first welding strips, and arranging the first welding strips on one side surface of the first packaging material layer to form a first welding strip layer comprising a plurality of first welding strip groups, wherein the interval between two adjacent welding strips in each first welding strip group is consistent with the interval between two adjacent front main grids on the battery piece;
heating the first packaging material layer to enable the first packaging material layer to be melted and then cooled and solidified, so that the front light-transmitting plate, the first packaging material layer and the first welding strip layer are combined into a whole;
the providing a rear composite includes:
providing the back support;
providing the second packaging material layer and placing the second packaging material layer on one side surface of the back support;
providing a plurality of second welding strips, and arranging the second welding strips on one side surface of the second packaging material layer to form a second welding strip layer comprising a plurality of second welding strip groups, wherein the interval between two adjacent welding strips in each second welding strip group is consistent with the interval between two adjacent back main grids on the battery piece;
and heating the second packaging material layer to enable the second packaging material layer to be melted and then cooled and solidified, so that the back support piece, the second packaging material layer and the second welding strip layer are combined into a whole.
As a further improvement of the present invention, in the thickness direction of the laminate to be laminated, the height of the connecting portion beyond the contact surface between the solder ribbon and the battery piece is larger than the thickness of the battery piece.
As a further improvement of the present invention, the first bonding tape has a smaller dimension in its arrangement direction than the second bonding tape.
In order to achieve the above object, the present invention also provides a solar cell module comprising:
the front composite part comprises a front plate and a first welding strip layer fixed on the first surface of the front plate, wherein the first welding strip layer comprises a plurality of first welding strip groups, and the first welding strip groups comprise a plurality of first welding strips which are arranged at intervals;
the rear composite part comprises a back plate and a second welding strip layer fixed on the second surface of the back plate, wherein the second welding strip layer comprises a plurality of second welding strip groups, and the second welding strip groups comprise a plurality of second welding strips which are arranged at intervals; at least one of the first welding strip and the second welding strip is provided with a connecting part formed by bending away from the composite part at the tail end of the first welding strip and the second welding strip;
the plurality of battery pieces are arranged into a plurality of battery piece strings which are arranged side by side, the battery pieces correspond to the positions of the first welding strip group and the second welding strip group, the front main grid of each battery piece is contacted with the first welding strip, and the back main grid of each battery piece is contacted with the second welding strip; for two adjacent battery pieces on the same battery piece string, the first welding strip positioned on the front surface of one battery piece is interconnected with the second welding strip positioned on the back surface of the other battery piece through the connecting part.
As a further improvement of the present invention, the front plate includes a front light-transmitting plate and a first encapsulating material layer fixed on one side surface of the front light-transmitting plate, where the first surface is one side surface of the first encapsulating material layer facing away from the front light-transmitting plate; the backboard comprises a back support plate and a second packaging material layer fixed on one side surface of the back support plate, wherein the second surface is one side surface of the second packaging material layer, which is away from the back support plate.
The beneficial effects of the invention are as follows:
according to the manufacturing method of the solar cell module, the front plate and the first welding strips are integrally arranged to be the front composite piece, the rear plate and the second welding strips are integrally arranged to be the rear composite piece, the positions of the battery pieces corresponding to the first welding strips and the second welding strips are arranged between the front composite piece and the rear composite piece, and the connecting parts formed by bending away from the composite piece are formed at the tail end of at least one of the first welding strips and the second welding strips so as to realize interconnection of the adjacent battery pieces. The solar cell module manufactured by the manufacturing method of the solar cell module and the manufacturing method thereof have the advantages that the traditional welding process is omitted, the operation is simple, the loss of the cell is reduced, the discharge of the cell is simple, and the production efficiency of the solar cell module is improved.
Drawings
Fig. 1 is a flowchart of a method of manufacturing a solar cell module according to the present invention.
Fig. 2 is a flowchart of placing a battery sheet between a first surface and a second surface.
Fig. 3 is a schematic structural view of an embodiment of the solar cell module of the present invention.
Fig. 4 is an exploded view of the solar cell module of the present invention.
Fig. 5 is a schematic structural view of another embodiment of the solar cell module of the present invention.
Fig. 6 is a schematic view of the solar cell module according to the present invention with the front and rear plates removed.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
It should be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and/or processing steps closely related to aspects of the present invention are shown in the drawings, and other details not greatly related to the present invention are omitted.
In addition, it should be further noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Referring to fig. 1 to 6, the present invention provides a method for manufacturing a solar cell module, which includes the following steps:
providing a light-permeable front composite member 10, wherein the front composite member 10 comprises a front plate 11 and a first welding strip layer fixed on a first surface of the front plate 11, the first welding strip layer comprises a plurality of first welding strip groups 120, and the first welding strip groups 120 comprise a plurality of first welding strips 12 which are arranged at intervals;
providing a rear composite member 30, wherein the rear composite member 30 comprises a back plate 31 and a second welding strip layer fixed on a second surface of the back plate 31, the second welding strip layer comprises a plurality of second welding strip groups 320, and the second welding strip groups 320 comprise a plurality of second welding strips 32 which are arranged at intervals; wherein, at least one of the first welding strip 12 and the second welding strip 32 is provided with a connecting part which is formed by bending away from the composite piece at the tail end;
providing a plurality of battery pieces 21, and placing the battery pieces 21 between the first surface and the second surface to obtain a piece to be laminated; the plurality of battery pieces 21 are arranged into a plurality of battery piece strings which are arranged side by side, the battery pieces correspond to the positions of the first welding strip group 120 and the second welding strip group 320, the front main grid of each battery piece is contacted with the first welding strip 12, and the back main grid of each battery piece is contacted with the second welding strip 32;
providing a pressure in a thickness direction of the to-be-laminated member to fix the front composite member 10, the cell sheet 21, and the rear composite member 30 as one body, thereby obtaining the solar cell assembly 100; for two adjacent battery pieces on the same battery piece string, the first welding strip 12 positioned on the front face of one battery piece is interconnected with the second welding strip 32 positioned on the back face of the other battery piece through a connecting part.
In this way, in the whole manufacturing process of the solar cell module, there is no conventional welding process of the battery piece, so that the loss of the battery piece 21 is reduced, and the production efficiency of the solar cell module 100 is improved.
The front plate 11 includes a front transparent plate 111 and a first packaging material layer 112 fixed on one side surface of the front transparent plate 111, where the first surface is one side surface of the first packaging material layer facing away from the front transparent plate 111, that is, one side surface of the first surface facing the battery piece 21; the back plate 31 includes a back support plate 311 and a second encapsulation material layer 312 fixed to a side surface of the back support plate 311, the second surface being a side surface of the second encapsulation material layer 312 facing away from the back support plate 311, i.e., a side surface facing the battery cells 21.
As shown in fig. 2, the battery piece 21 is disposed between the first surface and the second surface, and includes the following steps:
selecting one of the front composite member 10 and the rear composite member 30 as a battery piece arrangement bottom plate, and placing the side, provided with the welding strip, of the battery piece arrangement bottom plate upwards;
the battery pieces 21 are placed on the positions of the welding strips on the battery piece arrangement bottom plate one by one;
if the portion to be welded is non-bent, as shown in fig. 3, the portion to be welded is a connecting portion 321 on the second welding strip 32, and the length of the connecting portion 321 needs to be greater than the thickness of the welding strip and less than the distance between two adjacent battery pieces in the same battery piece string; in this way, the second welding strip 32 can be connected with the first welding strip 12, and meanwhile, short circuit caused by contact with adjacent battery pieces is avoided;
if the portion to be welded is bent, as shown in fig. 3, the portion to be welded is a connection portion 121 on the first solder strip 12, a gap exists between the connection portion 121 and the edge of the battery piece 21; so that the first solder strip 12 is soldered to the second solder strip 32.
The other of the front and rear composite members 10 and 30 is placed on the battery sheet as an upper cover plate.
Preferably, as shown in fig. 5, the portion 321 'to be welded on the cell arrangement bottom plate (rear composite 30) is bent, and the connection portion 121' of the welding strip on the front composite 10 is non-bent. By the arrangement, the first welding strip 12 and the second welding strip 32 are conveniently aligned smoothly, the operation is simple, and the situation that the connecting part cannot be accurately inserted into the gap between the adjacent battery pieces to cause welding incapability due to small gap between the battery pieces is avoided. Of course, the front composite member 10 may be used as a bottom plate for arranging the battery cells, and accordingly, the portions to be welded of the first welding strip 12 may be bent, and the portions to be welded of the second welding strip 32 may be non-bent.
Preferably, the method of manufacturing a solar cell module further includes:
providing a set temperature while providing pressure to melt the welding materials on the surfaces of the first and second welding strips 12, 32 so that the two achieve welding; wherein, at a set temperature, the first encapsulation material layer 112 and the second encapsulation material layer 312 are melted.
Wherein a light transmissive front composite member 10 is provided comprising the steps of:
providing a front light-transmitting plate 111;
providing a first encapsulation material layer 112 and placing it on one side surface of the front light-transmitting plate 111;
providing a plurality of first welding strips 12, and arranging the first welding strips on one side surface of the first packaging material layer 112 to form a first welding strip layer comprising a plurality of first welding strip groups 120, wherein the interval between two adjacent welding strips in each first welding strip group 120 is consistent with the interval between two adjacent front main grids on the battery piece;
the first packaging material layer 112 is heated to be melted and then cooled to be solidified, so that the front light-transmitting plate 111, the first packaging material layer 112 and the first welding strip layer are combined into a whole.
Wherein providing the rear composite 30 comprises the steps of:
providing a back support 311;
providing a second encapsulation material layer 312 and placing on one side surface of the back support 311;
providing a plurality of second welding strips 32, and arranging the second welding strips on one side surface of the second packaging material layer 312 to form a second welding strip layer comprising a plurality of second welding strip groups 320, wherein the interval between two adjacent welding strips in each second welding strip group 320 is consistent with the interval between two adjacent back main grids on the battery piece;
the second packaging material layer 312 is heated to be melted and then cooled to be solidified, so that the back support 311, the second packaging material layer 312 and the second bonding layer are combined into a whole.
In particular, the height of the connection portion beyond the contact surface between the solder ribbon and the battery piece in the thickness direction of the to-be-laminated member (the direction indicated by the arrow in fig. 3) is larger than the thickness of the battery piece. By the arrangement, the connecting part can be contacted with another welding strip, and welding between adjacent battery pieces is guaranteed.
The number of first bonding pads 12 of the single first bonding pad group 120 is the same as the number of front main grids of the single battery piece; the number of second solder bumps 32 of a single second solder bump set 320 is the same as the number of back side main grids of a single battery cell. And the dimension of the first bonding tape 12 in its arrangement direction is smaller than the dimension of the second bonding tape 32 in its arrangement direction. By the arrangement, shielding of the first welding strip 12 to the front incident light is reduced as much as possible, and the power generation efficiency of the solar cell module 100 is improved.
Referring to fig. 3 to 6, the present invention further provides a solar cell module 100, which includes a front composite member 10, a cell layer 20, and a rear composite member 30 sequentially stacked from top to bottom. The front composite member 10 includes a front plate 11 and a plurality of first bonding pads 12 fixed to the front plate 11, and the rear composite member 30 includes a back plate 31 and a plurality of second bonding pads 32 fixed to the back plate 31. The front plate 11 includes a front light-transmitting plate 111 and a first encapsulation material layer 112 fixed to one side surface of the front light-transmitting plate 111, the first surface being one side surface of the first encapsulation material layer facing away from the front light-transmitting plate 111, i.e., the first surface being one side surface facing the battery cells 21. The back plate 31 includes a back support plate 311 and a second encapsulation material layer 312 fixed to a side surface of the back support plate 311, the second surface being a side surface of the second encapsulation material layer 312 facing away from the back support plate 311, i.e., a side surface facing the battery cells 21.
The battery sheet layer 20 includes a plurality of battery sheets 21 arranged in rows, each battery sheet 21 is arranged corresponding to one set of first welding strips 12 and second welding strips 32, and two sets of first welding strips 12 and second welding strips 32 arranged adjacently are contacted with each other, wherein the first welding strip 12 of one set is contacted with the second welding strip 32 of the other set.
Specifically, the position of the first solder strip 12 corresponds to the position of the front main grid of the battery piece 21. The positions of the second solder strips 32 correspond to the positions of the back main grids of the battery cells 21. Of the two adjacent battery pieces 21, the first solder strip 12 provided corresponding to one battery piece 21 is in contact with the second solder strip 32 provided corresponding to the other battery piece 21. In this embodiment, at the connection position of two adjacent battery pieces 21, one end of the first solder strip 12 corresponding to each battery piece 21 is provided with a connection portion 121 extending downward towards the second solder strip 32 corresponding to the adjacent battery piece 21, and one end of the second solder strip 32 is provided with a connection portion 321 extending beyond the edge of the battery piece 21, so that the first solder strip 12 and the second solder strip 32 are in contact with each other to realize the electrical connection of the adjacent battery pieces 21.
It should be noted that, the connecting portion 321 protruding toward the first solder strip 12 may be disposed on the second solder strip 32, or the connecting portion 321 may be disposed on a portion of the second solder strip 32, and the connecting portion 121 may be disposed on a portion of the first solder strip 12, so that it is only necessary to ensure that at least one solder strip of the two sets of first solder strips 12 and the second solder strip 32 corresponding to the two adjacent set battery pieces 21 is provided with a connecting portion protruding toward the solder strip of the adjacent battery piece 21 disposed on the different composite member, so as to realize the electrical connection of the adjacent battery pieces 21. That is, at least one first solder strip 12 of the two sets of first solder strips 12 and second solder strips 32 is provided with a connecting portion 121 protruding toward the second solder strip 32 corresponding to the adjacent battery piece 21, or at least one second solder strip 32 is provided with a connecting portion 321 protruding toward the first solder strip 12 corresponding to the adjacent battery piece 21. Of course, it is also possible to provide the first bonding tape 12 and the second bonding tape 32 arranged in groups with connection portions protruding in the corresponding bonding tape direction.
The first solder strip 12 and the second solder strip 32 are soldered by low temperature solder, so that the first solder strip 12 and the second solder strip 32 are heated and melted to be respectively bonded with the front main grid and the back main grid of the battery piece 21 in the lamination process, so as to realize the welding of a plurality of battery pieces 21.
In summary, in the method for manufacturing a solar cell module according to the present invention, the front plate 11 and the plurality of first solder strips 12 are integrally provided as the front composite member 10, the rear plate 31 and the plurality of second solder strips 32 are integrally provided as the rear composite member 30, the plurality of battery pieces 21 are arranged between the front composite member 10 and the rear composite member 30 at positions corresponding to the plurality of first solder strips 12 and the plurality of second solder strips 32, and the connecting portion formed by bending away from the composite member is formed at the end of at least one of the first solder strips 12 and the second solder strips 32 to interconnect the adjacent battery pieces 21. The solar cell module and the manufacturing method thereof have the advantages that the traditional welding process of the cell is omitted, the operation is simple, the loss of the cell 21 is reduced, the discharge of the cell 21 is simple, and the production efficiency of the solar cell module 100 is improved.
The above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention.
Claims (10)
1. A method of manufacturing a solar cell module, comprising the steps of:
providing a light-permeable front composite, wherein the front composite comprises a front plate and a first welding strip layer fixed on a first surface of the front plate, the first welding strip layer comprises a plurality of first welding strip groups, and the first welding strip groups comprise a plurality of first welding strips which are arranged at intervals;
providing a rear composite member, wherein the rear composite member comprises a back plate and a second welding strip layer fixed on a second surface of the back plate, the second welding strip layer comprises a plurality of second welding strip groups, and the second welding strip groups comprise a plurality of second welding strips which are arranged at intervals; at least one of the first welding strip and the second welding strip is provided with a connecting part formed by bending away from the composite part at the tail end of the first welding strip and the second welding strip;
providing a plurality of battery pieces, and placing the battery pieces between the first surface and the second surface to obtain a piece to be laminated; the plurality of battery pieces are arranged into a plurality of battery piece strings which are arranged side by side, the battery pieces correspond to the first welding strip group and the second welding strip group in position, the front main grid of each battery piece is contacted with the first welding strip, and the back main grid of each battery piece is contacted with the second welding strip;
providing a pressure in the thickness direction of the to-be-laminated member to fix the front composite member, the cell sheet and the rear composite member as one body, thereby obtaining a solar cell module; for two adjacent battery pieces on the same battery piece string, the first welding strip positioned on the front face of one battery piece is interconnected with the second welding strip positioned on the back face of the other battery piece through the connecting part.
2. The method of manufacturing a solar cell module according to claim 1, wherein: the front plate comprises a front light-transmitting plate and a first packaging material layer fixed on one side surface of the front light-transmitting plate, and the first surface is one side surface of the first packaging material layer away from the front light-transmitting plate; the backboard comprises a back support plate and a second packaging material layer fixed on one side surface of the back support plate, wherein the second surface is one side surface of the second packaging material layer, which is away from the back support plate.
3. The method of manufacturing a solar cell module according to claim 2, wherein: the method for manufacturing the solar cell module further comprises the following steps:
providing a set temperature while providing pressure to melt the welding materials on the surfaces of the first welding strip and the second welding strip so as to realize welding; wherein the first encapsulation material layer and the second encapsulation material layer are melted at the set temperature.
4. The method of manufacturing a solar cell module according to claim 1, wherein: the placing the battery sheet between the first surface and the second surface includes:
selecting one of the front composite piece and the rear composite piece as a battery piece arrangement bottom plate, and placing the side, provided with the welding strip, of the battery piece arrangement bottom plate upwards;
the method comprises the steps that battery pieces are placed on positions of each welding strip group on a battery piece arrangement bottom plate one by one, wherein each welding strip comprises a portion to be welded, which exceeds the edge of each battery piece, and if the portion to be welded is non-bent, the length of the portion to be welded is larger than the thickness of the welding strip and smaller than the distance between two adjacent battery pieces in the same battery piece string; if the part to be welded is bent, a gap exists between the part to be welded and the edge of the battery piece;
the other of the front and rear composites is placed on the battery plate as an upper cover plate.
5. The method of manufacturing a solar cell module according to claim 4, wherein: the welding strips on the battery piece arrangement bottom plate are provided with connecting parts formed by bending, and the welding strips on the upper cover plate extend linearly.
6. The method of manufacturing a solar cell module according to claim 2, wherein: the provision of a light transmissive front composite member includes:
providing the front light-transmitting plate;
providing the first packaging material layer and placing the first packaging material layer on one side surface of the front light-transmitting plate;
providing a plurality of first welding strips, and arranging the first welding strips on one side surface of the first packaging material layer to form a first welding strip layer comprising a plurality of first welding strip groups, wherein the interval between two adjacent welding strips in each first welding strip group is consistent with the interval between two adjacent front main grids on the battery piece;
heating the first packaging material layer to enable the first packaging material layer to be melted and then cooled and solidified, so that the front light-transmitting plate, the first packaging material layer and the first welding strip layer are combined into a whole;
the providing a rear composite includes:
providing the back support;
providing the second packaging material layer and placing the second packaging material layer on one side surface of the back support;
providing a plurality of second welding strips, and arranging the second welding strips on one side surface of the second packaging material layer to form a second welding strip layer comprising a plurality of second welding strip groups, wherein the interval between two adjacent welding strips in each second welding strip group is consistent with the interval between two adjacent back main grids on the battery piece;
and heating the second packaging material layer to enable the second packaging material layer to be melted and then cooled and solidified, so that the back support piece, the second packaging material layer and the second welding strip layer are combined into a whole.
7. The method of manufacturing a solar cell module according to claim 1, wherein: and in the thickness direction of the to-be-laminated piece, the height of the connecting part exceeding the contact surface between the welding strip and the battery piece is larger than the thickness of the battery piece.
8. The method of manufacturing a solar cell module according to claim 1, wherein: the first solder strip has a smaller dimension in the arrangement direction than the second solder strip.
9. A solar cell module, a method of manufacturing the solar cell module according to claim 1, characterized in that: comprising the following steps:
the front composite part comprises a front plate and a first welding strip layer fixed on the first surface of the front plate, wherein the first welding strip layer comprises a plurality of first welding strip groups, and the first welding strip groups comprise a plurality of first welding strips which are arranged at intervals;
the rear composite part comprises a back plate and a second welding strip layer fixed on the second surface of the back plate, wherein the second welding strip layer comprises a plurality of second welding strip groups, and the second welding strip groups comprise a plurality of second welding strips which are arranged at intervals; at least one of the first welding strip and the second welding strip is provided with a connecting part formed by bending away from the composite part at the tail end of the first welding strip and the second welding strip;
the plurality of battery pieces are arranged into a plurality of battery piece strings which are arranged side by side, the battery pieces correspond to the positions of the first welding strip group and the second welding strip group, the front main grid of each battery piece is contacted with the first welding strip, and the back main grid of each battery piece is contacted with the second welding strip; for two adjacent battery pieces on the same battery piece string, the first welding strip positioned on the front surface of one battery piece is interconnected with the second welding strip positioned on the back surface of the other battery piece through the connecting part.
10. The solar cell module of claim 9, wherein: the front plate comprises a front light-transmitting plate and a first packaging material layer fixed on one side surface of the front light-transmitting plate, and the first surface is one side surface of the first packaging material layer away from the front light-transmitting plate; the backboard comprises a back support plate and a second packaging material layer fixed on one side surface of the back support plate, wherein the second surface is one side surface of the second packaging material layer, which is away from the back support plate.
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| CN112349805B (en) * | 2019-08-08 | 2022-09-13 | 苏州阿特斯阳光电力科技有限公司 | Photovoltaic module preparation method |
| CN113314637A (en) * | 2021-05-28 | 2021-08-27 | 宁夏小牛自动化设备有限公司 | Preparation method of single-side welded dense-grid solar cell string |
| CN113319472A (en) * | 2021-06-10 | 2021-08-31 | 苏州卓汇自动化设备有限公司 | Solder strip preparation method and device |
| CN114512572B (en) * | 2022-02-18 | 2024-03-29 | 深圳赛能数字能源技术有限公司 | Solder strip prefabricated part and production method thereof, solder strip and production method thereof |
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Address after: No. 199, Lushan Road, Suzhou hi tech Zone, Suzhou City, Jiangsu Province Applicant after: CSI CELLS Co.,Ltd. Applicant after: CANADIAN SOLAR MANUFACTURING (CHANGSHU) Inc. Applicant after: Atlas sunshine Power Group Co.,Ltd. Address before: No. 199, Lushan Road, Suzhou hi tech Zone, Suzhou City, Jiangsu Province Applicant before: CSI Cells Co.,Ltd. Applicant before: CANADIAN SOLAR MANUFACTURING (CHANGSHU) Inc. Applicant before: CSI SOLAR POWER GROUP Co.,Ltd. |
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