CN114613879A - Photovoltaic module production equipment, photovoltaic module preparation method and photovoltaic module - Google Patents
Photovoltaic module production equipment, photovoltaic module preparation method and photovoltaic module Download PDFInfo
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- CN114613879A CN114613879A CN202210111536.5A CN202210111536A CN114613879A CN 114613879 A CN114613879 A CN 114613879A CN 202210111536 A CN202210111536 A CN 202210111536A CN 114613879 A CN114613879 A CN 114613879A
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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
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
- H01L31/1876—Particular processes or apparatus for batch treatment of the devices
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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
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- 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
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Abstract
The embodiment of the application discloses photovoltaic module production equipment, a photovoltaic module preparation method and a photovoltaic module, wherein the photovoltaic module production equipment comprises: the workbench is used for bearing the battery piece; fixing belt conveying modules arranged at the top and the bottom of the workbench and used for laying fixing belts on the battery pieces; and the pressurizing and curing module is arranged on one side of the workbench and is used for pressurizing the fixing belts laid on the battery pieces. The photovoltaic module production equipment provided by the embodiment of the application can fix the conductor on the cell string through the fixing band, replaces the traditional welding process, can reduce the process temperature of production and processing of the photovoltaic module cell string, can realize interconnection of the cell pieces at 60-120 ℃, and therefore can avoid property change of a transparent conductive oxide film with a preset thickness deposited on an original amorphous silicon layer of the cell piece due to high temperature, and guarantees the performance of the photovoltaic module.
Description
Technical Field
The embodiment of the application relates to the technical field of photovoltaics, in particular to photovoltaic module production equipment, a preparation method of a photovoltaic module and the photovoltaic module.
Background
Photovoltaic cell needs to establish ties a plurality of battery pieces and forms the battery cluster among the prior art to play the effect of converging, mostly with conductor direct welding in the prior art in the battery piece, welding temperature need be above 150 ℃, can probably harm the performance that the battery piece influences the battery piece, especially when using the lamp that welds of infrared heating, the lamp that welds can heat up fast, can reach or exceed the rete damage temperature of heterojunction battery very easily in the twinkling of an eye.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, a first aspect of the invention provides a photovoltaic module production apparatus.
In a second aspect, the invention provides a method of making a photovoltaic module.
A third aspect of the invention provides a photovoltaic module.
In view of this, according to a first aspect of embodiments of the present application, there is provided a photovoltaic module production apparatus, including:
the workbench is used for bearing the battery piece;
fixing belt conveying modules arranged at the top and the bottom of the workbench and used for laying fixing belts on the battery pieces;
and the pressurizing and curing module is arranged on one side of the workbench and is used for pressurizing the fixing belts laid on the battery pieces.
In one possible embodiment, the strap feeding module comprises:
the first fixing belt conveying unit is arranged on the side surface or the bottom of the workbench and used for paving the fixing belt at the bottom of the battery piece;
and the second fixing belt conveying unit is arranged at the top of the workbench and is used for laying the fixing belt on the top of the battery piece.
In one possible embodiment of the method according to the invention,
the first fixing belt conveying unit comprises a first conveying roller, and the fixing belt is wound on the first conveying roller;
the second fixing belt conveying unit comprises a second conveying roller, and the fixing belt is wound on the second conveying roller;
wherein the melting point of one side of the fixing belt facing the battery piece is 60-120 ℃.
In one possible embodiment, the first strap conveying unit further includes: the first lifting piece is connected to the workbench at one end, and the first conveying roller is rotatably connected to the first lifting piece;
the second strap conveying unit further includes: and one end of the second lifting piece is connected to the workbench, and the second conveying roller is rotatably connected to the second lifting piece.
In one possible embodiment, the press curing module comprises:
a heating plate disposed at one side of the table;
and the pressurizing assembly is arranged on the heating plate.
In one possible embodiment, the fixing band includes:
a fixing band body;
the hot melting layer is coated on the fixing belt body and is made of a material with the melting point of 50-500 ℃.
In one possible embodiment, the photovoltaic module production facility further comprises: a transmission module, the transmission module comprising:
the transmission device is paved on the workbench and the pressure curing module;
and the power device is arranged on one side of the pressurizing and curing module, which is far away from the workbench, is connected with the transmission device and is used for driving the transmission device to move.
In one possible embodiment, the photovoltaic module production facility further comprises:
a preheating chamber disposed at one side of the work table;
and the manipulator is arranged on one side of the workbench and is used for grabbing the battery piece arranged in the preheating box onto the workbench.
In one possible embodiment, the photovoltaic module production facility further comprises:
a conductor supply module disposed at one side of the work table;
and the cutting module is arranged on one side of the workbench and is used for cutting the conductor.
According to a second aspect of the embodiments of the present application, a method for manufacturing a photovoltaic module is provided, which is applied to the photovoltaic module production apparatus according to the above technical solution, the method for manufacturing includes:
providing a preheated battery piece, and arranging the battery piece on the workbench;
disposing a conductor on the battery sheet;
controlling the fixing tape conveying module to output fixing tapes so that the fixing tapes cover the conductor and the battery piece;
and applying pressure to the fixing tape covered on the conductor and the battery piece through the pressure curing module.
According to a third aspect of the embodiments of the present application, a photovoltaic module is provided, which is prepared by the preparation method of the photovoltaic module according to the above technical scheme.
Compared with the prior art, the invention at least comprises the following beneficial effects: the photovoltaic module production facility that this application embodiment provided has included the workstation, fixed band conveying module and pressurization solidification module, in the in-process of using the photovoltaic module production facility preparation photovoltaic module that this application embodiment provided, the battery piece that will accomplish preheating sets up on the workstation, then set up the conductor on the battery piece, control fixed band conveying module opens the output fixed band, the fixed band can be fixed the conductor on the battery piece, last rethread pressurization solidification module is for exerting pressure on the fixed band that sets up on the conductor, so that the fixed band better laminates in the battery piece, make firm the connecting in the battery piece of conductor, the battery piece that will accomplish the conductor installation again moves to next station, repeat above-mentioned step, can establish ties a plurality of battery pieces through the conductor in order to form the photovoltaic module battery cluster. The photovoltaic module production equipment provided by the embodiment of the application can fix the conductor on the cell string through the fixing band, replaces the traditional welding process, can reduce the process temperature of production and processing of the photovoltaic module cell string, can realize interconnection of the cell pieces at 60-120 ℃, and therefore can avoid property change of a transparent conductive oxide film with a preset thickness deposited on an original amorphous silicon layer of the cell piece due to high temperature, and guarantees the performance of the photovoltaic module.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic block diagram of a photovoltaic module production facility according to one embodiment provided herein;
fig. 2 is a schematic structural view of a fixing belt of a photovoltaic module production apparatus according to an embodiment provided in the present application;
FIG. 3 is a flow chart of illustrative steps in a method of making a photovoltaic module according to another embodiment provided herein;
fig. 4 is a schematic structural view of a photovoltaic module produced by the photovoltaic module production apparatus of the example provided in the present application.
Wherein, the correspondence between the reference numbers and the component names in fig. 1, fig. 2 and fig. 4 is:
110 work bench, 120 fixed belt conveying module, 130 pressing and curing module, 140 conveying module, 150 preheating box and 160 cutting module;
121 a first belt feeding unit, 122 a second belt feeding unit, 131 a heating plate, 132 a pressing assembly, 141 a transmission device, 142 a power device;
210 battery pieces, 220 conductors and 230 fixing bands;
2301 fixing the strap body, 2302 heat fused layer, 2311 metal post and 2312 metal layer.
Detailed Description
In order to better understand the technical solutions described above, the technical solutions of the embodiments of the present application are described in detail below with reference to the drawings and the specific embodiments, and it should be understood that the specific features of the embodiments and the embodiments of the present application are detailed descriptions of the technical solutions of the embodiments of the present application, and are not limitations of the technical solutions of the present application, and the technical features of the embodiments and the embodiments of the present application may be combined with each other without conflict.
As shown in fig. 1, according to a first aspect of embodiments of the present application, there is provided a photovoltaic module production apparatus, including: the workbench 110, the workbench 110 is used for bearing the battery piece; a band feeding module 120 disposed at the top and bottom of the table 110 for laying a band on the battery sheet; and a pressure curing module 130 disposed at one side of the worktable 110 for applying pressure to the fixing tapes laid on the battery pieces.
The photovoltaic module production apparatus provided by the embodiment of the present application includes a work table 110, a fixed belt conveying module 120 and a press curing module 130, in the process of manufacturing a photovoltaic module using the photovoltaic module manufacturing apparatus provided in the embodiment of the present application, the cell pieces subjected to preheating are disposed on the work table 110, then the conductor is placed on the battery plate, the fixing band conveying module 120 is controlled to open the output fixing band, the fixing band can fix the conductor on the battery plate, finally, the pressure curing module 130 applies pressure on the fixing band on the conductor, so that the fixed band better laminates in the battery piece for the firm connection in the battery piece of conductor, the battery piece that will accomplish the conductor installation again moves to next station, repeats above-mentioned step, can establish ties in order to form photovoltaic module battery cluster through the conductor with a plurality of battery pieces. The photovoltaic module production equipment provided by the embodiment of the application can fix the conductor on the cell string through the fixing band, replaces the traditional welding process, can reduce the process temperature of production and processing of the photovoltaic module cell string, can realize interconnection of the cell pieces at 60-120 ℃, thereby avoiding property change of the transparent conductive oxide film with the preset thickness deposited on the original amorphous silicon layer of the cell pieces due to high temperature, and ensuring the performance of the photovoltaic module.
In some examples, the strap feeding module 120 includes: a first tape feeding unit 121 disposed at a side or bottom of the table 110 for laying a tape on a bottom of the battery sheet; and a second band feeding unit 122 disposed on the top of the table 110 for laying the band on the top of the battery cell.
In consideration of the fact that each cell piece comprises a first surface and a second surface during the cell string generation process of the photovoltaic module, the conductor member is connected to the first surface of one of the two adjacent cells and the second surface of the other of the two adjacent cell pieces through the fixing belt, and the series connection of the two adjacent cell pieces can be realized. Same conductor need connect respectively in the front and the back of two battery pieces, fixed band conveying module 120 has included first fixed band conveying unit 121 and second fixed band conveying unit 122, the fixed band through first fixed band conveying unit 121 output can connect the conductor in the first face of battery piece, the fixed band through second fixed band output unit output can connect the conductor in the second face of battery piece, so that fix the conductor on the two sides of battery piece, can improve the connection speed of conductor, be convenient for photovoltaic module's quick production and processing.
In some examples, the first fixing tape conveying unit 121 includes a first conveying roller on which the fixing tape is wound; the second fixing tape conveying unit 122 includes a second conveying roller around which the fixing tape is wound; wherein, the melting point of the fixing belt facing to one side of the battery piece is 60-120 ℃.
First fixed band conveying unit 121 includes first conveying roller, and around being equipped with the fixed band on the first conveying roller, through the setting of first conveying roller, fixed band can be put outward to first conveying roller rotation, and the solidification area is laid and can be connected the conductor in the first face of battery piece on the battery piece.
Second fixed band conveying unit 122 includes the second conveying roller, and around being equipped with the fixed band on the second conveying roller, through the setting of second conveying roller, the fixed band can be put outward to the second conveying roller rotation, and the solidification area is laid and can be connected the conductor in the second face of battery piece on the battery piece.
The melting point of one side of the fixing band facing the battery piece is 60-120 ℃, after the battery piece is preheated, when the fixing band is in contact with the preheated battery piece, the curing band can be melted, and after the curing band is solidified again, the conductor piece can be fixed on the battery piece.
In some examples, the fixed band can be multilayer structure, and the fixed band can include articulamentum and substrate layer, and the fusing point of articulamentum is 60 ℃ to 120 ℃, and the articulamentum is connected in the substrate layer, and the articulamentum is used for melting in order to connect the conductor in the battery piece, and can improve the mechanical strength of fixed band through the setting of substrate layer, ensures the wearability of fixed band, when the fixed band with the conductor laminating in the battery piece for the fixed band can compromise the effect of auxiliary protection.
It can be understood that the fixed band also can be single layer construction to in the production and processing of fixed band, when single layer construction's fixed band laminated the conductor in the battery piece, single layer construction's fixed band can play certain supplementary guard action equally, can avoid conductor and outside air contact, can reduce the probability that the conductor is worn and torn, can improve life.
It is understood that, in order to secure the power generation performance of the photovoltaic module, the light transmittance of the fixing tape needs to be greater than or equal to 70%.
According to the photovoltaic module provided by the embodiment of the application, through the arrangement of the fixing belt, on one hand, the connection between the conductor and the battery piece is more reliable, the conductor can be prevented from being separated from the battery piece, a gap between the conductor and the battery piece can be prevented, and the power generation efficiency of the photovoltaic module is ensured; on the other hand, the traditional welding process is replaced, a welding pad is not required to be arranged, the cost is saved, the process is simplified, meanwhile, the shading area caused by the fixation of the conductor piece can be reduced, the optical loss of the photovoltaic module is favorably reduced, and the power generation efficiency of the photovoltaic module can be improved; on the other hand, the conductor is fixed on the cell piece in a mode of melting the fixing band, the conductor does not need to be fixed through welding equipment, the wire diameter of the conductor is favorably further reduced, the shading area of the conductor can be further reduced, and the power generation efficiency of the photovoltaic module is improved.
In some examples, the material from which the fastening tape is made includes: the base material comprises at least one of polyester resin, polyethylene octene co-elastomer, ethylene-vinyl acetate and polyolefin thermoplastic elastomer.
The base material for preparing the fixing band comprises at least one of terylene resin, polyethylene octene co-elastomer, ethylene-vinyl acetate and polyolefin thermoplastic elastomer, so that the fixing band has excellent hydrophobicity and light transmittance, the shading performance of the photovoltaic module can be prevented from being increased due to the introduction of the fixing band, the optical loss of the photovoltaic module can be further reduced, and the power generation efficiency of the photovoltaic module can be guaranteed.
In some examples, the material from which the fastening tape is made further comprises: and the crosslinking agent is used for carrying out crosslinking reaction with the base material after the base material is melted.
The material for preparing the fixing band further comprises a cross-linking agent, through the arrangement of the cross-linking agent, after the fixing band reaches the melting point, the base material of the fixing band can be melted, the melted base material can be cross-linked with the cross-linking agent, the chemical property of the solidified layer after re-solidification can be more stable, the solidified layer can not be changed in chemical property under the condition of 150-300 ℃, particularly, the melting point of the solidified layer after re-solidification can be improved, the melting point of the solidified layer after re-solidification can reach 150-300 ℃, and the fixing band is prevented from being separated in the use process of the photovoltaic module.
In some examples, the first belt conveyor unit 121 further includes: a first lifting member, one end of which is connected to the table 110, and a first conveying roller which is rotatably connected to the first lifting member; the second belt conveying unit 122 further includes: and a second lifting member having one end connected to the table 110, and a second conveying roller rotatably connected to the second lifting member.
The first strap conveying unit 121 further includes: the first lifting piece is connected to the workbench 110 at one end, and the distance between the first transmission roller and the workbench 110 is adjustable through the arrangement of the first lifting piece, so that the fixing belt can be conveniently conveyed to a desired position, and the fixing belt can be conveniently laid on the first surface of the battery piece.
The second belt conveying unit 122 further includes: one end of the second lifting piece is connected to the workbench 110, the second conveying roller is rotatably connected to the second lifting piece, and the second lifting piece is arranged, so that the distance between the second conveying roller and the workbench 110 can be adjusted, the fixing belt can be conveyed to a desired position conveniently, and the fixing belt can be laid on the second surface of the battery piece conveniently.
First conveying roller rotationally connects in first lifting member, the fixed band of first conveying roller output of being convenient for.
The second conveying roller is rotatably connected to the second lifting part, so that the second conveying roller can output the fixing belt conveniently.
In some examples, the press cure module 130 includes: a heating plate 131 disposed at one side of the table 110; and a pressing assembly 132 disposed on the heating plate 131.
The pressurization curing module 130 comprises a heating plate 131 and a pressurizing assembly 132, through the arrangement of the heating plate 131, the fixing belt is in contact with the battery piece after preheating, the fixing belt is preliminarily fixed on the battery piece, the battery piece can be transferred onto the heating plate 131 of the pressurization curing module 130, the heating plate 131 can heat the battery piece again, meanwhile, the pressurizing assembly 132 applies pressure to the fixing belt, the fixing belt can be more stably connected to the battery piece, and the fixing between the conductor piece and the battery piece is more reliable.
In some examples, the pressurization assembly 132 includes: pressing blocks, wherein the pressing blocks are in a rolling wheel shape or a pressing block shape; and the heating element is arranged in the pressurizing block or sleeved on the outer surface of the pressurizing block.
The pressurizing assembly 132 comprises a pressurizing block, the pressurizing block can be in a roller shape, after the battery piece which completes the preliminary fixation of the conductor and the fixing belt moves to the pressurizing and curing module 130, the pressurizing block rolls on the battery piece through the roller shape to apply pressure to the fixing belt, so that the fixing belt is better connected to the battery piece, and the conductor is better connected to the battery piece.
The pressurizing assembly 132 further comprises a heating element, so that the temperature of the pressurizing block in the using process can be higher than that of the fixing belt, the function of hot melting fixation can be achieved, the connection between the fixing belt and the battery piece is more reliable, and the conductor can be stably fixed.
In some examples, the photovoltaic module production apparatus further comprises: a transmission module 140, the transmission module 140 comprising: a transmission device 141 which is laid on the workbench 110 and the pressure curing module 130; and the power device 142 is arranged on one side of the pressure curing module 130 far away from the workbench 110, connected to the transmission device 141, and used for driving the transmission device 141 to move.
The photovoltaic module production equipment further comprises a transmission module 140, the transmission module 140 is convenient for transporting the battery pieces and connecting the plurality of battery pieces in series, so that the production of the photovoltaic module can be modularized and streamlined, and the intelligent production of the photovoltaic module is favorably realized.
In the use, only need to set up the battery piece on transmission device, after the conductor on the battery piece is tentatively fixed by the fixed band, can open power device 142, drive transmission module 140 through power device 142 and remove, transmission module 140 removes and can drive the battery piece and remove to pressurization solidification module 130 and carry out the pressurization solidification, can set up next battery piece on the transmission device that is located workstation 110 top simultaneously, so the circulation can realize the series connection of a plurality of battery pieces.
In some examples, the photovoltaic module production apparatus further comprises: a preheating chamber 150 disposed at one side of the table 110; and a robot disposed at one side of the table 110 for picking up the battery pieces disposed in the preheating compartment 150 onto the table 110.
The photovoltaic module production equipment further comprises a preheating box 150, the cell can be preheated through the arrangement of the preheating box 150, so that the temperature of the cell reaches the melting point temperature of the fixing band, it can be understood that the preheating temperature of the preheating box 150 is 80-120 ℃, so that the temperature of the cell can reach 80-120 ℃ after the cell is preheated by the preheating box 150, when the fixing band is in contact with the preheated cell, the fixing band can be melted or partially melted, and the conductor can be stably fixed on the cell by the fixing band by applying pressure to the fixing band through the pressure curing module 130.
In some examples, the photovoltaic module production apparatus further comprises: a conductor supplying module disposed at one side of the table 110; and a cutting module 160 disposed at one side of the table 110 for cutting the conductor.
The photovoltaic module production equipment further comprises a conductor supply module and a cutting module 160, the conductor can be supplied to the workbench 110 through the conductor supply module, continuous production of the cell strings is facilitated, and production efficiency of the photovoltaic module cell strings can be improved.
The photovoltaic module production equipment further comprises a cutting module 160, and the conductor is cut to a desired length conveniently through the arrangement of the cutting module 160, and two adjacent battery pieces are connected in series conveniently through the conductor.
As shown in fig. 2, in some examples, the fixation strap includes: a fixing band body 2301; the thermal melting layer 2302 is coated on the fixing band body 2301, and the thermal melting layer 2302 is made of a material having a melting point of 50 ℃ to 500 ℃.
This fixed band has included fixed band body 2301 and the hot melt layer 2302 of cladding on fixed band body 2301, wherein the melting point of hot melt layer 2302 is 50 ℃ to 500 ℃, in the fixed band use that this application embodiment provided, can set up the fixed band on the battery piece that is used for preparing photovoltaic module, and then heat the fixed band, make the temperature of fixed band be greater than the melting point temperature of hot melt layer 2302, hot melt layer 2302 on the fixed band can melt, then reduce the temperature, make the hot melt layer 2302 after melting solidify again, the fixed band can be laminated on the battery piece, it can realize the series connection of a plurality of battery pieces to repeat above-mentioned step connection two adjacent battery pieces.
According to the fixing band provided by the embodiment of the application, in the use process of the fixing band, the hot melt layer 2302 is melted, and then the fixing band body 2301 is connected to the battery piece through re-solidification of the hot melt layer 2302, so that on one hand, the connection between the fixing band and the battery piece is more reliable, the fixing band can be prevented from being separated from the battery piece, a gap between the fixing band and the battery piece can be avoided, and the power generation efficiency of a photovoltaic module is ensured; on the other hand, the traditional welding process is replaced, a welding pad is not required to be arranged, the cost is saved, the process is simplified, the shading area caused by fixing of the fixing belt can be reduced, the optical loss of the photovoltaic module is reduced, and the power generation efficiency of the photovoltaic module can be improved; on the other hand, the fixing band is fixed on the cell piece through the mode of melting hot melt layer 2302, and the fixing band is not required to be fixed through welding equipment, so that the wire diameter of the fixing band is favorably further reduced, the shading area of the fixing band can be further reduced, and the power generation efficiency of the photovoltaic module is improved.
More preferably, the melting point of the material used to make thermofusible layer 2302 can be between 200 ℃ and 500 ℃.
It can be understood that the fixing band that this application embodiment provided need not to form the pad on the battery piece at the in-process of connecting the fixing band in the battery piece, and with the temperature of fixing band installation in-process between 50 ℃ to 500 ℃, can avoid high temperature or pad to cause the damage to the battery piece than traditional technique, can guarantee the integrality of battery piece, does benefit to and further improves photovoltaic module's generating efficiency.
It can be understood that, in order to ensure that the fixing tape can function as a series cell, the fixing tape body 2301 needs to be made of a conductor material, and the lower the resistivity of the fixing tape body 2301, the higher the power generation efficiency of the photovoltaic module.
It can be understood that, in the fixing band provided by the embodiment of the present application, the hot melt layer 2302 is coated on the fixing band body 2301, i.e. the hot melt layer 2302 is set on the peripheral side of the fixing band body 2301, and in the use process of the fixing band, the fixing band can be fixed on the battery pieces through any angle, so that the fixing band is installed, the series connection of the battery pieces is more convenient, and the process difficulty is reduced.
It is understood that the specific shape of the heat melt layer 2302 is not limited in this application, for example, the cross-section of the heat melt layer 2302 may be circular, directional, or any irregular geometric shape.
In some examples, the hot melt layer 2302 is made of an organic material having a melting point of 50 ℃ to 500 ℃.
The material for preparing the hot melt layer 2302 can be an organic material, and the selection of the organic material is realized, so that in the preparation process of the fixing band, only the fixing band body 2301 needs to be penetrated through the organic material in a molten state, the organic material in a molten state can be hung on the fixing band body 2301, the hot melt layer 2302 can be formed on the fixing band body 2301 after the organic material in the molten state is cooled and solidified, the organic material is convenient to melt, the chemical property after melting is stable, and the preparation of the fixing band is convenient.
Meanwhile, the hot melt layer 2302 is prepared from an organic material, so that on the first hand, the hot melt layer 2302 has good hydrophobicity, the photovoltaic module can be prevented from being infected by water vapor, and the fixing belt is prevented from being separated from the cell due to the water vapor; in the second aspect, the heat-fusible layer 2302 has good viscosity, and can be better bonded to the battery sheet after the heat-fusible layer 2302 is melted.
In some examples, the organic material includes: at least one of polyethylene octene co-elastomer, ethylene-vinyl acetate and polyolefin thermoplastic elastomer, and cross-linking agent.
The organic material used for preparing the hot melt layer 2302 can comprise at least one of polyethylene octene co-elastomer, ethylene-vinyl acetate and polyolefin thermoplastic elastomer, the preparation of the fixing band is facilitated, the hydrophobicity and the viscosity of the hot melt layer 2302 are guaranteed, meanwhile, the light transmittance of the hot melt layer 2302 can be improved, the hot melt layer 2302 is close to a transparent state, the light shading property of the fixing band can be greatly reduced, the optical loss of a photovoltaic module can be further reduced, and the power generation efficiency of the photovoltaic module is improved.
The material for preparing the hot melt layer 2302 comprises the cross-linking agent, when the ambient temperature of the fixing band is higher than the melting point of the hot melt layer 2302, the cross-linking agent can be cross-linked with at least one material of polyethylene octene co-elastomer, ethylene-vinyl acetate and polyolefin thermoplastic elastomer, so that the chemical property of the hot melt layer 2302 can be stabilized, the melting point of the hot melt layer 2302 can be further improved, the temperature of the hot melt layer 2302 can be increased again, the hot melt layer 2302 can be melted by breaking through the new melting point of the hot melt layer 2302, and then the temperature is reduced to solidify the hot melt layer 2302, so that the fixing band can be installed.
In some examples, the securing strap body 2301 is cylindrical, and the securing strap plate includes: metal posts 2311; a metal layer 2312 coated on the metal pillar 2311, and a hot melt layer 2302 coated on the metal layer 2312; among them, a material for preparing the metal pillar 2311 is different from a material for preparing the metal layer 2312, and a material for preparing the metal layer 2312 includes tin.
Fixed band body 2301 is the column, and hot melt layer 2302 cladding is on fixed band body 2301 for the fixed band becomes the column, can make the fixed band possess good refraction effect, can make photovoltaic module higher to the utilization efficiency of light energy.
Fixed band body 2301 has included metal column 2311 and metal layer 2312, fixed band body 2301 is bilayer structure, and inlayer and outer material are different, a material for preparing metal layer 2312 has included tin, after heat fusion layer 2302 melts, it can be preferred to contact with the battery piece to be located the outer metal layer 2312 of fixed band body 2301, then heat fusion layer 2302 melts once more and can fix fixed band body 2301 on the battery piece, selection through the tin material, can make the metal layer 2312 better with the combination effect of battery piece, the passivation effect is better, can avoid metal layer 2312 wearing and tearing or destroy the battery piece, do benefit to and reduce the holistic resistivity of battery body.
The metal column 2311 and the metal layer 2312 are made of different materials, the metal layer 2312 can be made of a material with a better combination effect with the cell, the metal column 2311 is located inside the fixing belt body 2301, and the metal column 2311 cannot be in direct contact with the cell, so that the metal column 2311 can be made of a material with lower resistivity, and power loss of the photovoltaic module in the current collection process is reduced.
In some examples, the material from which metal posts 2311 are made includes at least one of copper, silver, and gold.
The material for preparing the metal pillar 2311 may include at least one of copper, silver and gold, and the resistivity of the metal pillar 2311 can be reduced through the selection of the material, so that the power loss of the photovoltaic module in the current collection process is reduced, and the power generation efficiency of the photovoltaic module is improved.
In some examples, metal posts 2311 are 100 to 350 microns in diameter; the thickness of the metal layer 2312 is 5 to 20 micrometers; the thickness of the heat fusion layer 2302 is 10 to 3000 micrometers.
The diameter of the metal column 2311 is 100 micrometers to 350 micrometers, so that the metal column 2311 occupies most of the volume of the fixing belt, and the metal column 2311 is made of a material with low resistivity, so that the whole resistivity of the fixing belt is favorably reduced, and the mechanical strength of the fixing belt can be improved.
The thickness of the metal layer 2312 is 5-20 microns, and the metal layer 2312 plays a role in better contacting with a battery piece, so that the thickness of the metal layer 2312 is lower than the line diameter of the metal column 2311, on one hand, the metal layer 2312 is convenient to prepare, only the metal column 2311 needs to penetrate through molten metal tin in the preparation process, a layer of molten metal can be wrapped on the metal column 2311, and the metal layer 2312 can be formed after the metal tin is solidified; on the other hand, the cost of the fixing belt is favorably reduced.
The thickness of the hot melt layer 2302 is 10-3000 microns, and the thickness of the hot melt layer 2302 is reduced as much as possible while the fixing band can be firmly fixed on the battery body through the selection of the thickness range, so that the preparation of the hot melt layer 2302 is facilitated, and the cost of the fixing band is reduced.
Preferably, the thickness of the thermo-melt layer 2302 is 10 to 1000 micrometers.
It can be understood that, through the determination of the line diameter of the metal pillar 2311 and the determination of the thickness of the metal layer 2312 and the hot melt layer 2302, the line diameter of the fixing strip is between 115 micrometers and 400 micrometers, the line diameter of the fixing strip is greatly reduced, the light shielding performance of the fixing strip is reduced, the optical loss of the photovoltaic module is favorably reduced, and the power generation efficiency of the photovoltaic module can be improved.
In some examples, the heat fusing layer 2302 is plural, the plural heat fusing layers 2302 are coated on the fastening tape body 2301 at intervals, and the fastening tape body 2301 between two adjacent heat fusing layers 2302 is in an exposed state.
The heat melting layer 2302 may be provided in plural, and a plurality of heat melting layers 2302 may be arranged on the fastening tape body 2301 at intervals, i.e. the heat melting layer 2302 may be discontinuous, so that the use of the material of the heat melting layer 2302 can be reduced, and the heat melting layer 2302 is formed only in the area where the fastening tape needs to be fastened, which is beneficial to reducing the cost of the fastening tape.
As shown in fig. 3, according to a second aspect of the embodiments of the present application, there is provided a method for manufacturing a photovoltaic module, which is applied to the photovoltaic module production apparatus in the above technical solution, the method for manufacturing includes:
step 101: and providing the preheated battery piece, and arranging the battery piece on the workbench. It can be understood that the preheating of the cell can be performed in a preheating box of the photovoltaic module production equipment, and the preheated cell can be grabbed and arranged on the workbench through a manipulator.
Step 102: a conductor is disposed on the battery sheet.
Step 103: and controlling the fixing belt conveying module to output the fixing belt so that the fixing belt covers the conductor and the battery piece. When the fixing band covers on conductor and battery piece, the heat energy of battery piece will be used on the fixing band, and the fixing band will be melted towards one side in the battery piece, and along with solidifying once more of fixing band, the fixing band can be fixed conductor to the battery piece.
Step 104: and applying pressure to the fixing belt covered on the conductor and the battery piece through the pressure curing module. After the preliminary fixed band battery piece of fixed band, can transport the battery piece to the pressurization solidification module through the transmission module of photovoltaic module production facility, the pressurization solidification module can heat battery piece and solidification area once more, can exert pressure for the fixed band simultaneously for the fixed band can be connected in the battery piece better for the fixed band can be fixed on the battery piece steadily.
The preparation method provided by the embodiment of the application replaces the traditional welding process, can reduce the process temperature of the production and processing of the photovoltaic module battery string, and can realize the interconnection of the battery pieces at 60-120 ℃, thereby avoiding the property change of the transparent conductive oxide film with the preset thickness deposited on the original amorphous silicon layer of the battery pieces due to high temperature, and ensuring the performance of the photovoltaic module.
In some examples, a method of making a photovoltaic module comprises:
step 201: adjusting the positions of the first fixing belt conveying unit and the second fixing belt conveying unit so that the first fixing belt conveying unit can output the fixing belts to the first surface of the battery piece and the second fixing belt conveying unit can output the fixing belts to the second surface of the battery piece;
step 202: placing the battery piece which is heated to 80-120 ℃ on a transmission device above a workbench through a preheating box by using a mechanical arm or other gripping devices;
step 203: the conductor part with the length capable of covering the two battery piece electrodes is cut out through the cutting module, and the conductor part can be a bare metal wire or a conductor part coated with a layer of organic material on the outer surface.
Step 204: place the conductor piece above the battery piece of snatching, one end and the front end parallel and level of battery piece, the other end is placed on the fixed band of fixed band conveying module output.
Step 205: the conveyor belt moves forwards by the position of one battery piece;
step 206: taking another battery piece out of the preheating box and placing the battery piece on the conductor piece;
step 207: controlling the transmission device to move a station of a battery piece forwards;
step 208: repeating the step 201 to the step 207, and preparing and obtaining a battery string;
it is understood that the tapes output through the first and second tape feeding units may be overlaid on the battery cell while the battery cell is moved forward, so that the conductor member is preliminarily attached to the battery cell;
it will be appreciated that after the cell plate is moved to the press curing module, the press curing module applies pressure and heat to the mounting tape, further contacting the conductor members with the electrodes on the cell plate. And realizing the electrode interconnection of the battery pieces.
According to a third aspect of the embodiments of the present application, a photovoltaic module is provided, which is prepared by the preparation method of the photovoltaic module according to the above technical scheme.
It can be understood that the photovoltaic module provided in the embodiment of the present application is prepared by the preparation method according to the above technical scheme, so that the photovoltaic module has all the beneficial effects of the preparation method according to the above technical scheme, and details are not described herein.
As shown in fig. 4, the photovoltaic module prepared by the method for preparing a photovoltaic module and the photovoltaic module production apparatus provided by the embodiment of the present application includes: at least two battery pieces 210; a conductor 220; the fixing band 230, the conductor member 220 is connected to the battery pieces 210 through the fixing band 230, so that two adjacent battery pieces 210 are connected in series, and the melting point of the fixing band 230 on the side facing the battery pieces 210 is 60 ℃ to 120 ℃.
The photovoltaic module provided by the embodiment of the application comprises at least two battery pieces 210, a conductor 220 and a fixing band 230, wherein the conductor 220 is connected to the two adjacent battery pieces 210 through the fixing band 230 to realize the series connection of the two adjacent battery pieces 210 and realize the convergence of the photovoltaic module, and the melting point of one side, facing the battery pieces 210, of the fixing band 230 is 60-120 ℃, so that the conductor 220 can be bonded on the battery pieces 210 in a mode of melting the fixing band 230 in the preparation process of the photovoltaic module, the welding process in the traditional technology is replaced, the series connection of the battery pieces 210 can be realized under the temperature condition of 60-120 ℃, the temperature for circuit interconnection of the battery pieces 210 is greatly reduced, the photovoltaic module can be protected, the battery pieces 210 of the photovoltaic module are prevented from being damaged due to overhigh welding temperature, and the service life and the performance of the photovoltaic module are prolonged.
Through the arrangement of the fixing belt 230, on one hand, the connection between the conductor and the cell is more reliable, the conductor can be prevented from being separated from the cell, a gap between the conductor and the cell can be prevented, and the power generation efficiency of the photovoltaic module is ensured; on the other hand, the traditional welding process is replaced, a welding pad is not required to be arranged, the cost is saved, the process is simplified, meanwhile, the shading area caused by the fixation of the conductor piece can be reduced, the optical loss of the photovoltaic module is favorably reduced, and the power generation efficiency of the photovoltaic module can be improved; on the other hand, the conductor is fixed on the cell sheet in a mode of melting the fixing band 230, and the conductor does not need to be fixed through welding equipment, so that the wire diameter of the conductor is favorably further reduced, the shading area of the conductor can be further reduced, and the power generation efficiency of the photovoltaic module is improved.
As shown in fig. 3 and 4, in some examples, the fixing layer includes: the melting point of the bonding layer is 60-120 ℃; and the isolation layer is connected with the bonding layer, and the melting point of the isolation layer is greater than or equal to 150 ℃.
Further provided the structure of fixed band 230 in this technical scheme, fixed band 230 can be multilayer structure, both fixed band 230 can include the adhesive linkage and connect in the isolation layer of adhesive linkage, and wherein the melting point of adhesive linkage is 60 ℃ to 120 ℃, and fixed band 230 can be connected in battery piece 100 through the adhesive linkage, and the isolation layer then need not to possess adhesive property, and the isolation layer can play the effect of keeping apart, can protect battery piece 100 to prevent that battery piece 100 from being worn and torn.
The melting point of the isolation layer is greater than or equal to 150 ℃, so that the fixing band 230 cannot be damaged due to overhigh temperature of the working environment in the use process of the photovoltaic module, and the service life and the working stability of the photovoltaic module can be greatly improved.
As shown in fig. 4, in some examples, the securing strap 230 further includes: and a plurality of organic layers disposed between the adhesive layer and the barrier layer.
The fixing tape 230 may further include a plurality of organic layers in addition to the adhesive layer and the isolation layer, and the fixing tape 230 may have good ductility and stable chemical properties by the arrangement of the plurality of organic layers, it may be understood that materials between the plurality of organic layers may be different, such arrangement may further improve the corrosion resistance of the fixing tape 230, and may enable the operation of the photovoltaic module to be more stable.
It can be understood that the light transmittance of the organic layer, the adhesive layer and the isolation layer is higher than 80% to ensure the power generation efficiency of the photovoltaic cell.
In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit referred to must have a specific direction, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A photovoltaic module production apparatus, comprising:
the workbench is used for bearing the battery piece;
fixing belt conveying modules arranged at the top and the bottom of the workbench and used for laying fixing belts on the battery pieces;
and the pressurizing and curing module is arranged on one side of the workbench and is used for pressurizing the fixing belts laid on the battery pieces.
2. The photovoltaic module production facility of claim 1, wherein the ribbon transport module comprises:
the first fixing belt conveying unit is arranged on the side surface or the bottom of the workbench and used for paving the fixing belt at the bottom of the battery piece;
and the second fixing belt conveying unit is arranged at the top of the workbench and is used for laying the fixing belt on the top of the battery piece.
3. The photovoltaic module production apparatus according to claim 2,
the first fixing belt conveying unit comprises a first conveying roller, and the fixing belt is wound on the first conveying roller;
the second fixing belt conveying unit comprises a second conveying roller, and the fixing belt is wound on the second conveying roller;
wherein the melting point of one side of the fixing belt facing the battery piece is 60-120 ℃.
4. The photovoltaic module production apparatus according to claim 3,
the first strap conveying unit further includes: one end of the first lifting piece is connected to the workbench, and the first conveying roller is rotatably connected to the first lifting piece;
the second strap conveying unit further includes: and one end of the second lifting piece is connected to the workbench, and the second conveying roller is rotatably connected to the second lifting piece.
5. The photovoltaic module production apparatus according to claim 1, wherein the press-curing module includes:
a heating plate disposed at one side of the work table;
the pressurizing assembly is arranged on the heating plate;
the pressurizing block is in a roller shape or a pressing block shape;
and the heating element is arranged in the pressurizing block or sleeved on the outer surface of the pressurizing block.
6. The photovoltaic module production apparatus according to claim 3, wherein the fixing tape includes:
a fixing band body;
the hot melting layer is coated on the fixing belt body and is made of a material with the melting point of 50-500 ℃.
7. The photovoltaic module production apparatus according to any one of claims 1 to 6, further comprising: a transmission module, the transmission module comprising:
the transmission device is paved on the workbench and the pressure curing module;
and the power device is arranged on one side of the pressurizing and curing module, which is far away from the workbench, is connected with the transmission device and is used for driving the transmission device to move.
8. The photovoltaic module production apparatus according to any one of claims 1 to 6, further comprising:
a preheating chamber disposed at one side of the work table;
the manipulator is arranged on one side of the workbench and is used for grabbing the battery piece arranged in the preheating box onto the workbench;
a conductor supply module disposed at one side of the work table;
and the cutting module is arranged on one side of the workbench and is used for cutting the conductor.
9. A production method of a photovoltaic module, which is applied to the photovoltaic module production apparatus according to any one of claims 1 to 8, comprising:
providing a preheated battery piece, and arranging the battery piece on the workbench;
disposing a conductor on the battery sheet;
controlling the fixing tape conveying module to output fixing tapes so that the fixing tapes cover the conductor piece and the battery piece;
and applying pressure to the fixing tape covered on the conductor and the battery piece through the pressure curing module.
10. A photovoltaic module produced by the production method according to claim 9.
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| WO2020173321A1 (en) * | 2019-02-28 | 2020-09-03 | 苏州携创新能源科技有限公司 | Flexible photovoltaic assembly and manufacturing method therefor |
| CN112201720A (en) * | 2020-09-30 | 2021-01-08 | 浙江晶科能源有限公司 | Solar cell module preparation method and solar cell module |
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| KR20170070451A (en) * | 2015-12-14 | 2017-06-22 | 한화첨단소재 주식회사 | Electrode-attached solar cell encapsulation sheet, solar cell module and manufacturing method thereof |
| WO2020173321A1 (en) * | 2019-02-28 | 2020-09-03 | 苏州携创新能源科技有限公司 | Flexible photovoltaic assembly and manufacturing method therefor |
| CN112201720A (en) * | 2020-09-30 | 2021-01-08 | 浙江晶科能源有限公司 | Solar cell module preparation method and solar cell module |
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