CN114023843A - Solder strip structure, manufacturing method of solder strip structure and photovoltaic module - Google Patents
Solder strip structure, manufacturing method of solder strip structure and photovoltaic module Download PDFInfo
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- CN114023843A CN114023843A CN202111349535.6A CN202111349535A CN114023843A CN 114023843 A CN114023843 A CN 114023843A CN 202111349535 A CN202111349535 A CN 202111349535A CN 114023843 A CN114023843 A CN 114023843A
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- 229910000679 solder Inorganic materials 0.000 title claims abstract description 55
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000003466 welding Methods 0.000 claims abstract description 141
- 239000012528 membrane Substances 0.000 claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims description 28
- 238000003825 pressing Methods 0.000 claims description 13
- 229920001721 polyimide Polymers 0.000 claims description 11
- 239000003292 glue Substances 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 239000004642 Polyimide Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000011159 matrix material Substances 0.000 claims description 5
- 229910001174 tin-lead alloy Inorganic materials 0.000 claims description 5
- 238000004026 adhesive bonding Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 18
- 230000008569 process Effects 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 13
- 239000010408 film Substances 0.000 description 61
- 238000010438 heat treatment Methods 0.000 description 7
- 238000002834 transmittance Methods 0.000 description 7
- 239000011521 glass Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 239000002313 adhesive film Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 238000009963 fulling Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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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
-
- 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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- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention provides a solder strip structure, a manufacturing method of the solder strip structure and a photovoltaic module, wherein the solder strip structure comprises a grid film and a solder strip attached to the grid film; the grid membrane comprises a membrane body, wherein a plurality of holes are formed in the membrane body to form a grid-shaped structure. According to the welding strip structure provided by the invention, the welding strips are laid on the grid film, so that on one hand, through the supporting and fixing effects of the grid film, a plurality of welding strips can be aligned with the battery piece at the same time, the welding process is simplified, the welding difficulty is reduced, and the welding efficiency is improved; on the other hand, through set up the hole on the membrane body, be helping improving the luminousness to when improving photovoltaic module's efficiency, still help improving the welding effect.
Description
Technical Field
The invention relates to the technical field of solar cells, in particular to a solder strip structure, a manufacturing method of the solder strip structure and a photovoltaic module.
Background
The photovoltaic module is photovoltaic equipment which is obtained by electrically interconnecting a plurality of solar cells and then packaging the solar cells in glass or organic polymers and can be used for a long time; in the crystalline silicon photovoltaic module, the cells are usually welded by welding strips; for the situation of welding through a plurality of welding strips, each welding strip needs to be positioned respectively, so that the welding process is complicated, and the welding difficulty is high.
Disclosure of Invention
The invention solves the problem that the welding difficulty of the welding strip and the battery piece is higher.
In order to solve the above problems, the present invention provides a solder strip structure, which includes a mesh film and a solder strip attached to the mesh film; wherein,
the grid membrane comprises a membrane body, wherein a plurality of holes are formed in the membrane body to form a grid-shaped structure.
Optionally, the material of the mesh film is polyimide.
Optionally, the thickness of the mesh membrane ranges from 0.02mm to 1 mm.
Optionally, the holes are elongated structures.
Optionally, the area of the holes is 50% to 90% of the area of the membrane body.
Optionally, the solder strip includes oxygen-free copper, and a tin-lead alloy outside the oxygen-free copper.
Optionally, the tin-lead alloy has a thickness in a range of 5 μm to 30 μm.
Another object of the present invention is a method for manufacturing a solder strip structure as described above, comprising the steps of:
s1: unreeling the film body through a film reeling mechanism to obtain a film body to be processed;
s2: carrying out pore-forming on the film body to be processed through a hole processing mechanism to obtain a grid film;
s3: coating glue on the surface of the grid film through a gluing mechanism to obtain a glued grid film;
s4: placing a welding strip on the glued grid film through a welding strip supply rolling mechanism to obtain a welding strip structure matrix;
s5: and pressing the welding strip structure matrix through a welding strip pressing mechanism to obtain the welding strip structure.
It is a further object of the present invention to provide a photovoltaic module comprising a solder ribbon structure as described above.
Compared with the prior art, the welding strip structure provided by the invention has the following advantages:
according to the welding strip structure provided by the invention, the welding strips are laid on the grid film, so that on one hand, through the supporting and fixing effects of the grid film, a plurality of welding strips can be aligned with the battery piece at the same time, the welding process is simplified, the welding difficulty is reduced, and the welding efficiency is improved; on the other hand, through set up the hole on the membrane body, be helping improving the luminousness to when improving photovoltaic module's efficiency, still help improving the welding effect.
Drawings
FIG. 1 is a schematic structural view of a solder ribbon construction of the present invention;
FIG. 2 is a schematic view of the structure of a mesh membrane according to the present invention;
FIG. 3 is a schematic view showing the structure of a solder ribbon manufacturing apparatus according to the present invention;
FIG. 4 is a schematic view of the connection between the solder strip structure and the battery piece according to the present invention;
fig. 5 is a schematic view of the welding process of the solder strip structure and the battery piece in the invention.
Description of reference numerals:
1-a grid film; 11-holes; 2-welding a strip; 3-solder strip manufacturing means; 31-a film roll mechanism; 32-a hole processing mechanism; 33-a gluing mechanism; 34-a solder strip supply roll mechanism; 35-a solder strip pressing mechanism; 4-a battery piece; 5-pressing the needle; 6-a conveying belt; 7-welding an auxiliary tool support; 71-open the pores.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the present invention and should not be construed as limiting the present invention, and all other embodiments that can be obtained by one skilled in the art based on the embodiments of the present invention without inventive efforts shall fall within the scope of protection of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "circumferential," "radial," and the like are used in the orientations and positional relationships indicated in the drawings for the purpose of simplifying the description, and are not intended to indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered as limiting the present invention.
Furthermore, the terms "first" and "second" are used merely to simplify the description and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the first feature being "on" or "under" the first feature may comprise the first feature being in direct contact with the second feature or the first feature being in direct contact with the second feature but being in contact with the second feature by another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. The first feature being "under," "below," and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or merely indicates that the first feature is at a lower level than the second feature.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In order to solve the problem of high difficulty in welding the welding strip and the battery piece, the invention provides a welding strip structure, which comprises a grid film 1 and a welding strip 2 attached to the grid film 1, wherein the grid film 1 is provided with a plurality of welding strips; the grid film 1 is used for supporting the welding strip 2, and in order to fix the welding strip 2 conveniently, the welding strip 2 is preferably bonded on the grid film 1 so as to avoid the movement of the welding strip 2; wherein weld the quantity of area 2, and the adjacent distance between 2 of welding the area, all with treat welded battery piece 4 looks adaptation, thereby can treat a plurality of welding areas 2 of welding simultaneously through this net membrane 1 and fix, and a plurality of relative position after fixing between 2 of welding the area with treat welded battery piece 4 on the adaptation, thereby when will weld area structure and battery piece 2 and weld, can once counterpoint a plurality of welding areas 2, reduce the welding operation degree of difficulty, improve welding efficiency.
The battery piece 4 in the application can be a battery piece with a main grid line or a battery piece without the main grid line; for the battery piece 4 with the main grid lines, in the welding strip structure provided by the application, the positions of the welding strips 2 are matched with the main grid lines on the battery piece 4, so that when welding is carried out, a plurality of welding strips 2 can be aligned with the corresponding main grid lines on the battery piece 4 at one time, and the alignment process is simplified; for the battery piece 4 without the main grid lines, a plurality of solder strips 2 in the solder strip structure can be laid on the corresponding battery piece 4 at the same time.
Wherein for on the basis of reducing the operation degree of difficulty, guarantee the efficiency of photovoltaic module after the welding, see fig. 2 and show, this application is preferred this net membrane 1 and is included the membrane body that plays the supporting role, is provided with a plurality of holes 11 on the membrane body, forms latticed structure.
The holes 11 may be uniformly or non-uniformly distributed on the membrane body, and for convenience of manufacturing and welding operation, the holes 11 are preferably uniformly distributed on the membrane body.
If the film which supports the solder strip 2 is not provided with the holes 11, namely, the solder strip is supported by the complete film body and is welded with the cell, the efficiency of the obtained photovoltaic module is determined by the light transmittance of the film body, the light transmittance of the adhesive film and the light transmittance of the glass; the other structures are the same, the efficiency of the photovoltaic module without the film body is determined by the light transmittance of the adhesive film and the light transmittance of the glass, and therefore, when the film body is arranged, the loss of the efficiency of the photovoltaic module can be caused; based on this, this application is through setting up hole 11 on the membrane body, increases the luminousness through these hole 11 to when reducing the welding degree of difficulty, help guaranteeing photovoltaic module's efficiency.
In addition, through set up hole 11 on the membrane body, in welding process, the tucking 5 of welding machine can pass corresponding hole 11, directly presses on welding the area 2 to make and weld area 2 and battery piece 4 and carry out good ohmic contact, help improving the welding effect.
For the convenience of operation, the position of the hole 11 on the film body is preferably matched with the position of the solder strip 2, so that a plurality of holes 11 are formed in the solder strip structure along the length direction of each solder strip 2.
According to the welding strip structure provided by the invention, the welding strips 2 are laid on the grid film 1, so that on one hand, through the supporting and fixing effects of the grid film 1, a plurality of welding strips 2 can be aligned with the battery pieces 4 at the same time, the welding process is simplified, the welding difficulty is reduced, and the welding efficiency is improved; on the other hand, through set up hole 11 on the membrane body, be helping improving the luminousness to when improving photovoltaic module's efficiency, still help improving the welding effect.
The grid film 1 is preferably made of high-transparency (the transparency rate is more than 90%) and high-temperature-resistant (high-temperature 50-300 ℃) thin film materials such as polyimide, PET and the like; in the present application, the material of the mesh film 1 is preferably Polyimide (PI), that is, the mesh film 1 is a polyimide film with holes 11.
The transparent and high-temperature resistant property of the polyimide film is utilized, for example, the temperature interval of the polyimide film which is high-temperature resistant and does not deform is 50-300 ℃; the welding strip structure is not deformed and melted in the welding and laminating processes, and the performance of the photovoltaic module is not influenced; meanwhile, due to the holes 11 formed in the polyimide film, the welding effect between the welding strip 2 and the battery piece 4 is not affected under the condition that the polyimide film is not melted.
Meanwhile, based on the high-temperature resistance characteristic of the polyimide film, when the welding strip structure 1 is welded with the battery piece 4, a low-temperature welding strip is not needed, the welding strip structure provided by the application can be completely welded within the temperature range of 200-300 ℃, and therefore the welding strip structure is beneficial to enabling the welding strip 2 to be in better metal contact with the battery piece 4, and the performance of a photovoltaic module is improved.
For the mechanical properties of guaranteeing the solder strip structure on the one hand, on the other hand does not influence photovoltaic module's performance for guaranteeing setting up of net membrane 1, the thickness scope of the preferred net membrane 1 of this application is 0.02mm ~ 1mm, and the thickness scope of membrane body is 0.02mm ~ 1mm promptly.
The shape and the size of each hole 11 on the film body can be the same or different; for convenience of manufacturing and welding, the shape and the size of each hole 11 on the film body are preferably consistent; the holes 11 can be in any regular or irregular combination shape such as round, square and oval; for fixing the welding strip 2 and welding, the hole 11 is preferably in a strip structure, that is, the longitudinal and transverse dimensions of the hole 11 are different; specifically, the longitudinal direction of the holes 11 along the length of the solder strip 2 is used as the longitudinal direction, and the longitudinal length of the holes 11 is greater than the transverse length thereof.
The larger the total area of the holes 11 on the film body is, the better the light transmittance is, but the more easily the formed mesh film 1 is deformed; therefore, under the condition that the grid film 1 is not deformed, the smaller the mesh number of the holes 11 on the film body is, the higher the penetration rate of the manufactured photovoltaic module is; in order to ensure that the grid film 1 is not deformed and has a transmittance, the area of the holes 11 in the grid film 1 is preferably 50-90% of the area of the film body, that is, the sum of the areas of all the holes 11 on the same film body is 50-90% of the area of the film body.
In the application, the welding strip 2 can be a circular welding wire with a circular section, and also can be a special-shaped welding wire with a triangular, rectangular, hexagonal and other sections; the solder ribbon 2 preferably comprises oxygen-free copper, and a tin-lead alloy outside the oxygen-free copper, and further preferably has a thickness in the range of 5 μm to 30 μm.
Another object of the present invention is to provide a method for manufacturing a solder strip structure as described above, which is performed by a solder strip manufacturing apparatus 3, as shown in fig. 3, and specifically, the method includes the steps of:
s1: unreeling the film body through a film reeling mechanism 31 to obtain a film body to be processed;
s2: the pore-forming mechanism 32 is used for pore-forming the membrane body to be processed, so that uniformly distributed pores 11 are formed on the membrane body to form a grid structure, and a grid membrane 1 is obtained;
s3: coating the glue on the surface of the grid film 1 by a gluing mechanism 33 to obtain a glued grid film;
s4: placing the welding strip 2 on the glued grid film through a welding strip roll supply mechanism 34 to obtain a welding strip structural matrix;
s5: and pressing the welding strip structure base body through the welding strip pressing mechanism 35 to obtain the welding strip structure.
The film rolling mechanism 31 is used for providing a film body with the thickness ranging from 0.02mm to 1mm and rolling the film body; the hole processing mechanism 32 is used to make a hole 11 with a certain shape and size on the film body, and the hole processing mechanism 32 includes, but is not limited to, a mechanism for cutting with laser or punching with a die; the solder strip roll-supplying mechanism 34 is used for supplying solder strips 2, and preferably, the solder strip roll-supplying mechanism 34 can simultaneously supply a plurality of solder strips 2, the number and the positions of the solder strips 2 correspond to those of main grid lines on the battery piece 4, and the positions of the solder strips 2 correspond to those of the holes 11, so that the solder strips 2 corresponding to the main grid lines of the battery piece 4 can be simultaneously laid on the grid film 1 by unwinding once; when a traditional battery piece is welded by adopting multiple grid lines, not only are multiple welding strips needed to be aligned with corresponding main grid lines respectively, but also in the operation process of welding strip replacement, taking 11 rolls of welding strips to be replaced as an example, assuming that the replacement time of each roll of welding strips is 2 minutes, the whole replacement process of the welding strips needs 22 minutes, so that the replacement process is complicated and the efficiency is low; and the alignment operation and the coil changing operation can be completed at one time in the application, so that the welding efficiency is greatly improved.
The glue coating mechanism 33 is used for uniformly coating glue on the grid film 1, and the glue is preferably used for coating glue on the grid film 1, and the glue is applied to apply the solder strip 2 on the grid film 1; the function of the welding strip pressing mechanism 35 is to apply a certain pressure to the welding strip 2, so that the welding strip 2 and the grid film 1 are bonded together under the action of glue, and a welding strip structure is obtained.
The manufacturing method of the welding strip structure provided by the invention is simple to operate and easy to realize; according to the obtained welding strip structure, the welding strips 2 are laid on the grid film 1, so that on one hand, through the supporting and fixing effects of the grid film 1, a plurality of welding strips 2 can be aligned with the battery pieces 4 at the same time, the welding process is simplified, the welding difficulty is reduced, and the welding efficiency is improved; on the other hand, through set up hole 11 on the membrane body, be helping improving the luminousness to when improving photovoltaic module's efficiency, still help improving the welding effect.
It is a further object of the present invention to provide a photovoltaic module comprising a solder ribbon structure as described above.
Specifically, for the convenience of understanding, the cell 4 is taken as an example with a main grid line, and referring to fig. 4, the photovoltaic module is welded with the cell 4 through the above-mentioned solder strip structure; referring to fig. 5, the welding process of the welding structure and the battery piece can be realized as follows:
s1: according to the size of the battery piece 4, cutting the welding strip structure into required length, and laying the welding strip structure on a welding production line, preferably a conveying belt 6 in the application;
s2: laying a first battery piece 4 on a welding strip structure on a transmission belt 6, and aligning the main grid line position of the battery piece 4 with a welding strip 2 on the welding strip structure;
s3: laying a secondary welding strip structure on the first battery piece 4, and aligning the welding strip 2 on the welding strip structure with the main grid line on the first battery piece 4;
s4: laying the battery piece 4 on the second welding strip structure, and repeating the steps until the required battery piece 4 is laid;
s5: after the laying is finished, the materials are conveyed to a heating position through a conveying belt 6;
s6: pressing the welding strip 2 at the hole 11 through the pressing pin 5 at the heating position, and simultaneously heating the back bottom plate;
s7: and (5) circularly welding until the welding of the battery string is completed.
Wherein the pressing pin 5 is used for fixing the welding strip structure and providing heat conduction; in the application, a welding auxiliary tool support 7 is preferably arranged above the pressing pin 5, and an opening 71 is further formed in the welding auxiliary tool support 7; in the optimal welding process, the bottom is heated by the heating wire, and the upper part is heated by electromagnetic heating or infrared heating, so that heat is provided to weld the welding strip 2 with the grid line on the battery piece 4; when the air heating is adopted, infrared light can also pass through the opening 71 on the welding auxiliary tool support 7 to heat and weld the welding strip 2 and the battery plate 4, so that the welding effect is improved.
According to the photovoltaic module, the welding strip 2 is laid on the grid film 1 through the welding strip structure, on one hand, through the supporting and fixing effects of the grid film 1, the multiple welding strips 2 can be aligned with the main grid lines simultaneously, the welding process is simplified, the welding difficulty is reduced, and the welding efficiency is improved; on the other hand, through set up hole 11 on the membrane body, be helping improving the luminousness to when improving photovoltaic module's efficiency, still help improving the welding effect.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and such changes and modifications will fall within the scope of the present invention.
Claims (9)
1. A solder strip structure is characterized by comprising a grid film (1) and a solder strip (2) applied on the grid film (1); wherein,
the grid membrane (1) comprises a membrane body, wherein a plurality of holes (11) are formed in the membrane body to form a grid-shaped structure.
2. Solder ribbon structure according to claim 1, characterized in that the material of the grid film (1) is polyimide.
3. Solder ribbon structure according to claim 2, characterized in that the thickness of the grid film (1) ranges from 0.02mm to 1 mm.
4. A solder strip structure according to any one of claims 1 to 3 wherein said holes (11) are elongated structures.
5. Solder ribbon structure according to claim 4, characterized in that the area of the holes (11) is 50-90% of the area of the membrane body.
6. A solder strip structure as claimed in claim 4, characterized in that the solder strip (2) comprises oxygen-free copper and a tin-lead alloy outside the oxygen-free copper.
7. The solder strip structure of claim 6, wherein the tin-lead alloy has a thickness in the range of 5 μm to 30 μm.
8. A method of manufacturing a solder strip structure according to any one of claims 1 to 7, comprising the steps of:
s1: unreeling the film body through a film reeling mechanism (31) to obtain a film body to be processed;
s2: carrying out pore-forming on the film body to be processed through a hole processing mechanism (32) to obtain a grid film (1);
s3: coating glue on the surface of the grid film (1) through a gluing mechanism (33) to obtain a glued grid film;
s4: placing the welding strip (2) on the glued grid film through a welding strip coil supply mechanism (34) to obtain a welding strip structure matrix;
s5: and pressing the welding strip structure matrix through a welding strip pressing mechanism (35) to obtain a welding strip structure.
9. A photovoltaic module comprising a solder ribbon structure according to any one of claims 1 to 7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111349535.6A CN114023843A (en) | 2021-11-15 | 2021-11-15 | Solder strip structure, manufacturing method of solder strip structure and photovoltaic module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111349535.6A CN114023843A (en) | 2021-11-15 | 2021-11-15 | Solder strip structure, manufacturing method of solder strip structure and photovoltaic module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116666490A (en) * | 2022-07-15 | 2023-08-29 | 武汉帝尔激光科技股份有限公司 | Manufacturing method of photovoltaic module |
| CN117525194A (en) * | 2023-12-07 | 2024-02-06 | 淮安捷泰新能源科技有限公司 | Solar cell interconnection structure and interconnection method |
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| EP2629339A1 (en) * | 2012-02-17 | 2013-08-21 | Eppstein Technologies GmbH | Film system for contacting photovoltaic cells |
| US20140060609A1 (en) * | 2011-10-26 | 2014-03-06 | Applied Materials, Inc. | Monolithic module assembly for standard crystalline silicon solar cells |
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| CN112786727A (en) * | 2021-02-01 | 2021-05-11 | 无锡市联鹏新能源装备有限公司 | Main-grid-free heterojunction solar cell module interconnection composite film and preparation method thereof |
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| CN117525194A (en) * | 2023-12-07 | 2024-02-06 | 淮安捷泰新能源科技有限公司 | Solar cell interconnection structure and interconnection method |
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