CN113035987A - Laminated connection structure of efficient laminated assembly and manufacturing method - Google Patents
Laminated connection structure of efficient laminated assembly and manufacturing method Download PDFInfo
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- CN113035987A CN113035987A CN202110437195.6A CN202110437195A CN113035987A CN 113035987 A CN113035987 A CN 113035987A CN 202110437195 A CN202110437195 A CN 202110437195A CN 113035987 A CN113035987 A CN 113035987A
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- 238000004519 manufacturing process Methods 0.000 title abstract description 11
- 238000003466 welding Methods 0.000 claims abstract description 85
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000003475 lamination Methods 0.000 claims description 15
- 239000007787 solid Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 abstract description 7
- 230000001070 adhesive effect Effects 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 2
- 238000004886 process control Methods 0.000 abstract description 2
- 229910000679 solder Inorganic materials 0.000 description 8
- 239000000463 material Substances 0.000 description 3
- 239000003292 glue Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 244000126211 Hericium coralloides Species 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007650 screen-printing Methods 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/047—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work moving work to adjust its position between soldering, welding or cutting steps
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
- H01L31/022433—Particular geometry of the grid contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
- H01L31/022441—Electrode arrangements specially adapted for back-contact solar cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—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
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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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- 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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Abstract
The invention provides a laminated connection structure of a high-efficiency laminated tile assembly and a manufacturing method thereof. The front main grids of one sliced battery and the back main grids of the other sliced battery are distributed on two sides of the main grid welding strip in a staggered mode. The invention combines the laminated staggered design of the front main grid and the back main grid, replaces the laminated connection structure bonded by the conductive adhesive with the main grid welding strip, realizes the use of the mature main grid welding strip welding process in the current laminated structure of the sliced battery, realizes the flexible connection of the laminated battery by welding, and improves the electrical property and the reliability of the component. Finer process control of the welding process may allow for smaller stack overlap widths.
Description
Technical Field
The invention belongs to the field of a laminated assembly structure, and particularly relates to a laminated connection structure of an efficient laminated assembly and a manufacturing method of the laminated connection structure.
Background
The current shingling subassembly is cut traditional battery piece into the small piece, directly links up two batteries through the conducting resin, pastes it stack together to this gets up the battery cluster, realizes no battery piece interval, improves subassembly encapsulation efficiency.
The conductive adhesive is composed of non-conductive glue, conductive particles and the like, is in contact conduction formed by bonding of the glue, and is not a physical welding integrated process of a conventional welding process, so that the conductivity index of the conductive adhesive is not at the same level as that of the conventional welding strip welding, and the conductivity index is different from that of the conventional welding strip welding by two quantity levels. Simultaneously with the long-term outdoor environment erosion: fatigue, such as moisture, stress, temperature, deformation, etc., has a severe impact on the adhesion, stability of the conductive properties, and thus on the long-term electrical and reliability properties of the assembly. And based on the high reliability requirement of the assembly, the performance requirement of the conductive adhesive is correspondingly improved, the material cost is increased, and the cost of the laminated assembly is further improved. The conductive adhesive joining process causes two processes of gluing and stringing to be added to the laminated tile assembly. Correspondingly, the screen printing equipment and the laminated tile series welding machine are added, so that the equipment investment is increased.
Disclosure of Invention
The invention aims to solve the problem of providing a laminated connecting structure of a high-efficiency laminated assembly and a manufacturing method thereof, which change the direct sticking of battery pieces through conductive adhesive into a tinned copper strip or flexible circuit board welding mode, improve the output performance and reliability of the assembly, effectively reduce the cost of the laminated assembly, improve the CTM value, the production efficiency and the product yield of the laminated assembly, and reduce the equipment investment of a production line.
In order to solve the technical problems, the invention adopts the technical scheme that: the invention provides a laminated connection structure of a high-efficiency laminated tile assembly and a manufacturing method thereof, wherein the laminated connection structure comprises a sliced battery, the sliced battery is obtained by cutting a battery piece with a standard specification, the sliced battery can be a half slice, a third slice, a quarter slice, a fifth slice or a sixth slice, and can also be a sliced battery with other sizes, adjacent sliced batteries are overlapped, a main grid welding strip is arranged between the adjacent sliced batteries, one side of the main grid welding strip is connected with a front main grid on one sliced battery, the other side of the main grid welding strip is connected with a back main grid on the other sliced battery, and the length of the main grid welding strip is not more than that of the sliced battery. The width of the laminated connection structure is consistent with the minimum size requirement of realizing laminated connection of the front main grid of one sliced cell and the back main grid of the other sliced cell in two adjacent sliced cells after lamination. The front main grids of one sliced battery and the back main grids of the other sliced battery are distributed on two sides of the main grid welding strip in a staggered mode. The middle non-welding area of the welding areas on the two sides of the main grid welding strip is a complete welding strip. The middle non-welding area of the main grid welding strip can be changed into a hollow structure. The hollow structure can reduce the material consumption of the main grid welding strip and reduce the cost. The hollow structure can be a flat-line array or a fishing net and the like. The main welding strip and the front main grid or the back main grid can be in a comb-tooth shape in the welding side area, so that the welding stress of the sliced battery is reduced, and the influence of the welding stress on the reliability of the sliced battery is reduced. The front main grid width value is 0.01mm-2mm, preferably 0.1mm-1.0 mm. The width value of the back main grid is 0.01mm-8mm, preferably 0.1mm-5 mm. The front main grid or the back main grid is in a solid rectangular shape. The front main grid or the back main grid is in a plurality of solid rectangles or round dot shapes with fixed intervals. The front main grid is arranged at the position of the front of a slice battery close to the long edge of one side, wherein the gap distance between the edge of one side of the front main grid close to the long edge and the edge of the long edge is preferably 0.01mm-0.5 mm; the back main grid is arranged at the position of the other sliced battery close to the long edge of one side, wherein the gap distance between the edge of one side of the back main grid close to the long edge and the edge of the long edge is not less than the size of the lamination and not more than 50% of the width size of the sliced battery, and preferably 2mm-8 mm. The main grid welding strip is a tinned copper strip or a flexible circuit board, and the thickness of the main grid welding strip is 0.02mm-0.5mm, preferably 0.05mm-0.15 mm. The main grid welding strip is flat, arc-shaped or wavy in the width direction.
A manufacturing method of a laminated connection structure of a high-efficiency laminated tile assembly comprises the following steps:
1) placing a sliced battery on a welding table top with the front side facing upwards;
2) picking up a main grid welding strip, then placing the main grid welding strip on a main grid on the front surface of the sliced battery, wherein the placement position of the main grid welding strip is parallel to the front surface main grid welding position, and then welding;
3) turning over the sliced cell (100) with the front main grid (1001) welded so that the front side faces downward, and then placing the sliced cell in a lamination welding area;
4) turning over the next sliced battery which is subjected to front-side main grid welding to enable the front side of the next sliced battery to face downwards, then placing the next sliced battery which is prepared in the lamination welding area and has the back side facing upwards on the sliced battery, enabling the edge of the lamination area of the main grid welding strip of the next sliced battery to be flush with the edge of the lamination area of the sliced battery with the back side facing upwards, and then welding the main grid welding strip and the position, corresponding to the back-side main grid, of the sliced battery with the back side facing upwards;
5) and (4) carrying out the same operation on the next sliced battery with the front main grid welding strip completed according to the same operation, welding the next sliced battery with the front main grid welding strip completed on the last sliced battery with the lamination welding completed, and the like until the required laminated battery string is completed.
The invention has the advantages and positive effects that: by adopting the technical scheme, the stacked staggered design of the front main grid and the back main grid is combined, and the main grid welding strip is used for replacing a stacked connection structure bonded by conductive adhesive, so that the use of a mature main grid welding strip welding process in the current stacked structure of the sliced battery is realized, the electrical property and reliability of the assembly are improved, and the assembly cost is reduced.
Meanwhile, the overlapping width of the lamination can be smaller by more precise process control of the welding process, and the CTM value (the degree of power loss of the component) of the component is improved; the invention has the advantages of simple structure, convenient maintenance, low processing cost and the like.
Drawings
Fig. 1 is a schematic view of a stacked connection structure of a plurality of sliced batteries according to the present invention;
fig. 2 is a schematic structural view of the front main grid and the back main grid of the sliced cell of the present invention.
In the figure:
100. sliced battery 110, main grid solder strip 1001 and front main grid
1002. Back main grid
Detailed Description
As shown in fig. 1-2, the present invention relates to a laminated connection structure of a high-efficiency laminated assembly and a manufacturing method thereof, including sliced cells 100, wherein adjacent sliced cells 100 are overlapped and disposed with a main grid welding strip 110 therebetween, one side of the main grid welding strip 110 is connected to a front main grid 1001 on one sliced cell 100, and the other side of the main grid welding strip 110 is connected to a back main grid 1002 on another sliced cell 100.
Further, the front main grids 1001 of one diced cell 100 and the back main grids 1002 of another diced cell 100 are distributed on two sides of the main grid solder strip 110 in a staggered manner.
Further, the width of the front main grid 1001 is 0.01mm to 2mm, preferably 0.1mm to 1.0 mm.
Further, the width value of the back main grid 1002 is 0.01mm-8mm, preferably 0.1mm-5 mm.
Further, the front main grid 1001 or the back main grid 1002 has a solid rectangular shape.
Further, the front main grid 1001 or the back main grid 1002 is a plurality of solid rectangles or dots with a fixed pitch.
Further, the front side main grid 1001 is arranged at a position of the front side of a slice of battery 100 close to the long side of one side, wherein the gap distance between the edge of one side of the front side main grid 1001 close to the long side and the edge of the long side is preferably 0.01mm-0.5 mm; the back main grid 1002 is arranged at a position close to the long edge of one side of another sliced battery 100, wherein the gap distance between the edge of one side of the back main grid 1002 close to the long edge and the edge of the long edge is not less than the size of the lamination and not more than 50% of the width size of the sliced battery 100, and preferably 2mm-8 mm.
Furthermore, the material of the main grid solder strip 110 is a tinned copper strip or a flexible circuit board, and the thickness thereof is 0.02mm to 0.5mm, preferably 0.05mm to 0.15 mm.
Further, the main grid solder strip 110 is flat, circular arc or wavy in the width direction.
A manufacturing method of a laminated connection structure of a high-efficiency laminated tile assembly comprises the following steps:
1) placing a sliced battery 100 right side up on a welding table;
2) picking up the main grid solder strip 110, then placing the main grid solder strip 110 on the front main grid 1001 of the sliced battery 100, wherein the placement position of the main grid solder strip is flush with the welding position of the front main grid 1001, and then welding;
3) turning over the sliced cell (100) with the front main grid (1001) welded so that the front side faces downward, and then placing the sliced cell in a lamination welding area;
4) turning over the next sliced battery 100 which is welded with the front main grid 1001 to enable the front side of the next sliced battery to face downwards, then placing the next sliced battery 100 which is prepared in the lamination welding area and has the back side facing upwards on the sliced battery 100 to enable the edge of the lamination area of the main grid welding strip 110 of the next sliced battery to be flush with the edge of the lamination area of the sliced battery 100 with the back side facing upwards, and then welding the main grid welding strip 110 and the position, corresponding to the back main grid 1002 of the sliced battery 100 with the back side facing upwards;
5) the next sliced cell 100 with the front side main grid solder strip 110 completed is subjected to the same operations as above, welded to the last sliced cell 100 with the stack welded, and so on until the desired shingled cell string is completed.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (10)
1. A laminated connection structure of a high-efficiency shingle assembly, comprising a sliced battery (100), characterized in that: the sliced battery (100) is arranged in an overlapped mode, a main grid welding strip (110) is arranged between the sliced battery (100) and the sliced battery, one side of the main grid welding strip (110) is connected with a front main grid (1001) on the sliced battery (100), and the other side of the main grid welding strip (110) is connected with another back main grid (1002) on the sliced battery (100).
2. The laminated connection structure of a high efficiency shingle assembly as recited in claim 1, wherein: the front main grids (1001) of one sliced battery (100) and the back main grids (1002) of the other sliced battery (100) are distributed on two sides of the main grid welding strip (110) in a staggered mode.
3. The laminated connection structure of a high efficiency shingle assembly as recited in claim 1, wherein: the width value of the front main grid (1001) is 0.01mm-2mm, preferably 0.1mm-1.0 mm.
4. The laminated connection structure of a high efficiency shingle assembly as recited in claim 1, wherein: the width value of the back main grid (1002) is 0.01mm-8mm, preferably 0.1mm-5 mm.
5. The laminated connection structure of a high efficiency shingle assembly as recited in claim 1, wherein: the front main grid (1001) or the back main grid (1002) is in a solid rectangular shape.
6. The laminated connection structure of a high efficiency shingle assembly as recited in claim 1, wherein: the front main grid (1001) or the back main grid (1002) is in a shape of a plurality of solid rectangles or dots with fixed intervals.
7. The laminated connection structure of a high efficiency shingle assembly as recited in claim 1, wherein: the front main grid (1001) is arranged at the position of the front of one sliced battery (100) close to the long edge of one side, wherein the gap distance between the edge of one side of the front main grid (1001) close to the long edge and the edge of the long edge is preferably 0.01-0.5 mm; the back main grid (1002) is arranged at the position of the other sliced battery (100) close to the long edge of one side, wherein the gap distance between the edge of one side of the back main grid (1002), close to the long edge, and the edge of the long edge is not less than the size of the lamination and not more than 50% of the width size of the sliced battery (100), and preferably 2mm-8 mm.
8. The laminated connection structure of a high efficiency shingle assembly as recited in claim 1, wherein: the main grid welding strip (110) is a tinned copper strip or a flexible circuit board, and the thickness of the main grid welding strip is 0.02mm-0.5mm, preferably 0.05mm-0.15 mm.
9. The laminated connection structure of a high efficiency shingle assembly as recited in claim 1 or 8, wherein: the main grid welding strip (110) is flat, arc-shaped or wavy in the width direction.
10. The method of claim 1, wherein the method comprises the steps of: the method comprises the following steps:
1) placing a sliced battery (100) right side up on a welding table;
2) picking up a main grid welding strip (110), then placing the main grid welding strip (110) on a front main grid (1001) of the sliced battery (100), wherein the placing position of the main grid welding strip is flush with the welding position of the front main grid (1001), and then welding;
3) turning over the sliced cell (100) with the front main grid (1001) welded so that the front side faces downward, and then placing the sliced cell in a lamination welding area;
4) turning over the sliced cell (100) with the front main grid (1001) welded, enabling the front side of the sliced cell to face downwards, then placing the sliced cell (100) with the other prepared back side facing upwards in the stacking welding area, enabling the edge of the stacking area of the main grid welding strip (110) to be flush with the edge of the stacking area of the sliced cell (100) with the back side facing upwards, and then welding the main grid welding strip (110) and the position, corresponding to the back main grid (1002) of the sliced cell (100) with the back side facing upwards;
5) and (3) carrying out the same operation on the next sliced battery (100) with the front main grid welding strip (110) completed, welding the sliced battery (100) with the previous sliced battery (100) with the laminated welding completed, and the like until the required laminated battery string is completed.
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| CN202110437195.6A CN113035987A (en) | 2021-04-22 | 2021-04-22 | Laminated connection structure of efficient laminated assembly and manufacturing method |
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| CN202110437195.6A CN113035987A (en) | 2021-04-22 | 2021-04-22 | Laminated connection structure of efficient laminated assembly and manufacturing method |
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| US20160126391A1 (en) * | 2014-10-31 | 2016-05-05 | Byd Company Limited | Solar cell module and manufacturing method thereof |
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| CN110165007A (en) * | 2019-06-10 | 2019-08-23 | 浙江正泰太阳能科技有限公司 | A kind of connection method of imbrication battery strings and the manufacturing method of imbrication component |
| CN210296398U (en) * | 2019-10-31 | 2020-04-10 | 协鑫集成科技股份有限公司 | High-efficient shingled photovoltaic module |
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