CN114171638B - Series connection method of photovoltaic double-sided batteries - Google Patents
Series connection method of photovoltaic double-sided batteries Download PDFInfo
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- 238000005096 rolling process Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 17
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000008439 repair process Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
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- 238000005452 bending Methods 0.000 description 1
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- 238000005538 encapsulation Methods 0.000 description 1
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- 238000013082 photovoltaic technology 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
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- 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
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- 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
- B23K37/0426—Fixtures for other work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
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- 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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- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic 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
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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 discloses a series connection method of photovoltaic double-sided batteries, which comprises the steps of alternately paving double-sided batteries with right sides upwards and double-sided batteries with back sides upwards to form battery layers; and a lower connecting piece layer and an upper connecting piece layer are respectively paved on the two side surfaces of the battery layer to form a battery string. When the invention is connected in series, the upper connecting piece and the lower connecting piece are not required to be connected from the top surface of the double-sided battery to the bottom surface of the adjacent double-sided battery, and the upper connecting piece and the lower connecting piece are connected straight and do not need to be bent in the middle, so that the invention has no outstanding stress point, is beneficial to the development of assembly flaking, and provides an implementation method for battery flaking. According to the invention, the connecting piece and the double-sided battery are separated, and all the connecting piece and the double-sided battery are respectively and independently grabbed and positioned at the same time, so that compared with the traditional welding, the invention can save a lot of time and improve the productivity; meanwhile, the carrying times and the path of the connecting piece and the double-sided battery are reduced, the alignment precision of the connecting piece and the double-sided battery is greatly improved, the welding yield of the assembly can be improved, and the repair is reduced.
Description
Technical Field
The invention relates to the field of photovoltaics, in particular to a tandem connection method of photovoltaic double-sided batteries.
Background
The crystalline silicon solar cells are manufactured into photovoltaic modules through series connection, lamination and encapsulation, and the welding of the cells into a series connection is a main process, and the series connection of the cells directly affects the performance of the modules and the production speed of the modules.
With the development of photovoltaic technology, a double-sided battery capable of generating power when both the front side and the back side are subjected to light receiving appears, and a component prepared by adopting the double-sided battery is called a double-sided component. The front faces of the double-sided batteries in the existing double-sided assembly are the same, for example, when a battery string is laid, the front faces of the double-sided batteries are tiled upwards; therefore, in the existing double-sided assembly, the double-sided battery must be connected in series by connecting the top surface of one double-sided battery with the bottom surface of the adjacent double-sided battery through a connecting member (such as a solder strip), that is, the connecting member must be bent from the top surface of the double-sided battery to the bottom surface of the adjacent double-sided battery, and at the bending position, the connecting member contacts with the edge of the double-sided battery to form a larger stress, which can generate a lot of adverse effects.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a series connection method of photovoltaic double-sided batteries, wherein a plurality of double-sided batteries are used for paving battery layers, and a lower connecting piece layer and an upper connecting piece layer are respectively paved on the surfaces of two sides of each battery layer to form a battery string;
The battery layer comprises a right-side-up double-sided battery and a back-side-up double-sided battery, and the right-side-up double-sided battery and the back-side-up double-sided battery are alternately arranged along the extending direction of the battery string; taking the gap between two adjacent double-sided batteries as an inter-chip gap;
the lower connecting piece layer comprises lower connecting pieces which are paved at intervals along the extending direction of the battery strings; the lower connecting piece is used for bridging the bottom surfaces of two adjacent double-sided batteries, and spans the gap between the two double-sided batteries, and the inter-chip gap spanned by the lower connecting piece is taken as a lower cross-domain gap;
The upper connecting piece layer comprises upper connecting pieces which are paved at intervals along the extending direction of the battery strings; the upper connecting piece is used for bridging the top surfaces of two adjacent double-sided batteries, and spans the gap between the two double-sided batteries, and takes the inter-chip gap spanned by the upper connecting piece as an upper cross-domain gap;
the gaps between the sheets are respectively lower cross-domain gaps or upper cross-domain gaps, and the lower cross-domain gaps and the upper cross-domain gaps are alternately arranged along the extending direction of the battery string.
Preferably, the plurality of double-sided batteries are P-type double-sided batteries or N-type double-sided batteries.
Preferably, the plurality of double-sided batteries are sequentially tiled along the left-right direction; counting the plurality of double-sided batteries from left to right in sequence; all the double-sided batteries with odd numbers face upwards, and all the double-sided batteries with even numbers face upwards; or each odd bit double sided cell is back up and each even bit double sided cell is front up.
Preferably, the upper connecting piece and the lower connecting piece adopt welding wires or welding strips.
The specific steps of the tandem connection method of the photovoltaic double-sided battery are shown in the embodiment.
The invention has the advantages and beneficial effects that:
The invention can improve the serial connection speed of the double-sided batteries, improve the productivity of the battery strings and components, improve the yield of the battery strings and components and reduce the unit manufacturing cost.
When the double-sided batteries are connected in series, the upper connecting piece and the lower connecting piece are not required to be connected from the top surface of the double-sided battery to the bottom surface of the adjacent double-sided battery, and as the upper connecting piece and the lower connecting piece are connected straight and do not need to be bent in the middle, no protruding stress points exist, so that the development of assembly flaking is facilitated, and the realization method is provided for battery flaking.
The invention also has the following characteristics:
1. The invention regards battery string as the three-layer integrated structure, include upper connecting piece layer, battery layer, lower connecting piece layer that are independent each other, on this basis, the invention can be fixed, cut out upper and lower connecting pieces independently separately, through putting the double-sided battery on the connecting piece or putting the connecting piece on the double-sided battery, finish the double-sided battery to connect in series and connect in advance, weld; on the basis, various automatic action designs can be evolved.
2. According to the invention, after the battery string is decomposed into a three-layer structure, all upper connecting pieces or lower connecting pieces in one battery string or one component can be simultaneously loaded and positioned, and whether the battery string or one component is firstly grabbed and then cut or synchronously cut during grabbing, the double-sided battery can also be simultaneously positioned and grabbed according to the quantity of one string or one component.
3. The upper connecting piece, the double-sided battery and the lower connecting piece are mutually independent, the connecting piece and the double-sided battery are not mutually influenced in the preparation and positioning processes, the carrying and positioning of the connecting piece and the double-sided battery can be independently completed in a string mode or even in a unit of a component, for example, the whole battery string or even the connecting piece of the whole component can be simultaneously placed and positioned, after the positioning of the connecting piece is completed, the double-sided battery of the whole string or the whole component is simultaneously adsorbed and placed, and only the connecting piece is overlapped with the main grid of the double-sided battery, and the subsequent welding is smoothly completed.
4. According to the invention, the connecting piece and the double-sided battery are separated, and all the connecting piece and the battery are respectively and independently grabbed and positioned at the same time, so that compared with the traditional welding, the invention can save a lot of time and improve the productivity; meanwhile, the carrying times and the path of the connecting piece and the double-sided battery are reduced, the alignment precision of the connecting piece and the double-sided battery is greatly improved, the welding yield of the assembly can be improved, and the repair is reduced.
Detailed Description
The following describes the invention in further detail with reference to examples. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
The invention provides a series connection method of photovoltaic double-sided batteries, which comprises the steps of paving battery layers on the double-sided batteries, respectively paving a lower connecting piece layer and an upper connecting piece layer on the surfaces of two sides of the battery layers to form a battery string extending along the left-right direction;
the battery layer comprises a plurality of double-sided batteries which are tiled at intervals along the left-right direction, and the plurality of double-sided batteries are counted from left to right in sequence; all the double-sided batteries with odd numbers face upwards, and all the double-sided batteries with even numbers face upwards; or the back of each odd-numbered double-sided battery faces upwards, and each even-numbered double-sided battery faces upwards; the plurality of double-sided batteries are all P-type double-sided batteries or all N-type double-sided batteries; taking the gap between two adjacent double-sided batteries as an inter-chip gap;
The lower connecting piece layer comprises lower connecting pieces which are horizontally paved at intervals along the left-right direction; the lower connecting piece can adopt a welding wire or a welding belt; the lower connecting piece is used for bridging the bottom surfaces of two adjacent double-sided batteries, and spans the gap between the two double-sided batteries, and the inter-chip gap spanned by the lower connecting piece is taken as a lower cross-domain gap;
The upper connecting piece layer comprises upper connecting pieces which are horizontally paved at intervals along the left-right direction; the upper connecting piece can adopt a welding wire or a welding belt; the upper connecting piece is used for bridging the top surfaces of two adjacent double-sided batteries, and spans the gap between the two double-sided batteries, and takes the inter-chip gap spanned by the upper connecting piece as an upper cross-domain gap;
the gaps between the sheets are respectively lower cross-domain gaps or upper cross-domain gaps, and the lower cross-domain gaps and the upper cross-domain gaps are alternately arranged along the extending direction of the battery string.
Regarding the laying order of the lower connector layer, the battery layer, the upper connector layer:
1. The lower connector layer can be tiled first, then the battery layer is tiled on the lower connector layer, and then the upper connector layer is tiled on the battery layer; more specifically, regarding the welding of the lower connector layer, the upper connector layer and the battery layer: 1) The lower connecting piece layer and the battery layer can be welded together before the upper connecting piece layer is paved on the battery layer; after the upper connecting piece layer is paved on the battery layer, the upper connecting piece layer and the battery layer are welded together; 2) The lower connecting piece layer, the upper connecting piece layer and the battery layer can be welded together after the upper connecting piece layer is paved on the battery layer;
2. The battery layer is welded with the lower connecting piece layer, the battery layer is lifted and turned over, the turned over battery layer is paved on the upper connecting piece layer which is paved in advance, and the upper connecting piece layer is welded with the battery layer.
To further increase the production efficiency, it is possible to: synchronously tiling the lower connecting piece layers of each battery string in the whole photovoltaic module; synchronously tiling battery layers of each battery string in the whole photovoltaic module; the upper connecting piece layers of all the battery strings in the whole photovoltaic module are synchronously tiled.
Specifically, the lower connecting piece and the upper connecting piece can be small sections cut out from long sections of the connecting pieces; the long section of the connecting piece can adopt welding wires or welding strips.
More specifically, the lower connector is cut out with respect to the connector length: 1) The long sections of the connecting pieces can be cut off into lower connecting pieces which are arranged at intervals, then the lower connecting pieces which are arranged at intervals are integrally transferred, and the tiling action of all the lower connecting pieces is synchronously completed; 2) The long sections of the connecting pieces can be paved in the left-right direction firstly, and then the lower connecting pieces which are arranged at intervals are cut out from the long sections of the connecting pieces; 3) The method can also be carried out in the process of pulling the long section of the connecting piece: cutting out the long section of the connecting piece from the lower connecting piece, and synchronously completing the tiling and positioning of the lower connecting piece.
More specifically, the upper connector is cut out with respect to the connector long section: 1) The long sections of the connecting pieces can be cut off into upper connecting pieces which are arranged at intervals, then the upper connecting pieces which are arranged at intervals are integrally transferred, and the tiling action of all the upper connecting pieces is synchronously completed; 2) The long sections of the connecting pieces can be paved in the left-right direction firstly, and then the upper connecting pieces which are arranged at intervals are cut out from the long sections of the connecting pieces; 3) The method can also be carried out in the process of pulling the long section of the connecting piece: cutting out the long section of the connecting piece from the lower connecting piece, and synchronously completing the tiling and positioning of the lower connecting piece.
In addition, with respect to the positioning of the connector long section, the lower connector or the upper connector: 1) The long section of the connecting piece, the lower connecting piece or the upper connecting piece can be clamped and positioned by the clamping jaw; 2) The long section of the connecting piece, the lower connecting piece or the upper connecting piece can be positioned by rolling through the roller.
Specific embodiments of the invention are as follows:
Example 1
The invention provides a tandem connection method of photovoltaic double-sided batteries, which comprises the following steps:
A1 A lower connecting piece is paved at intervals along the left-right direction; taking a lower connecting piece between the leftmost lower connecting piece and the rightmost lower connecting piece as a middle lower connecting piece;
A2 A plurality of double-sided batteries are paved at intervals along the left-right direction, so that two adjacent double-sided batteries are respectively right-side up and back-side up, and the right-side up double-sided batteries and the back-side up double-sided batteries are alternately arranged along the left-right direction; the leftmost double-sided battery is tiled on the leftmost lower connecting piece, and the bottom surface of the leftmost double-sided battery is electrically connected with the leftmost lower connecting piece; the rightmost double-sided battery is tiled on the rightmost lower connecting piece, and the bottom surface of the rightmost double-sided battery is electrically connected with the rightmost lower connecting piece; taking a double-sided battery between the leftmost double-sided battery and the rightmost double-sided battery as a middle double-sided battery; dividing all the middle double-sided batteries into two groups according to the left-to-right sequence; the middle double-sided batteries of each group are in one-to-one correspondence with the middle lower connecting pieces, the two middle double-sided batteries of the same group are tiled on the corresponding middle lower connecting pieces, and the bottom surfaces of the two middle double-sided batteries are electrically connected by the middle lower connecting pieces;
A3 The connecting pieces are paved at intervals along the left-right direction; dividing all the double-sided batteries into two groups according to the left-to-right sequence; the upper connecting piece is in one-to-one correspondence with each group of double-sided batteries, the upper connecting piece is paved on the two double-sided batteries of the corresponding group, and the upper connecting piece electrically connects the top surfaces of the two double-sided batteries;
The leftmost lower connecting piece is used as a left end lead of the battery string; the rightmost lower connector is used as the right end lead of the battery string.
More specifically:
The upper and lower connectors of example 1 employ welding wires or straps.
The double sided battery in example 1 was either a P-type double sided battery or an N-type double sided battery. The double sided battery in example 1 was counted in order from left to right; all the double-sided batteries with odd numbers face upwards, and all the double-sided batteries with even numbers face upwards; or each odd bit double sided cell is back up and each even bit double sided cell is front up.
Example 2
The invention provides another series connection method of photovoltaic double-sided batteries, which comprises the following steps:
B1 A lower connecting piece is paved at intervals along the left-right direction;
B2 A plurality of double-sided batteries are paved at intervals along the left-right direction, so that two adjacent double-sided batteries are respectively right-side up and back-side up, and the right-side up double-sided batteries and the back-side up double-sided batteries are alternately arranged along the left-right direction; dividing all the double-sided batteries into two groups according to the left-to-right sequence; the double-sided batteries of each group are in one-to-one correspondence with the lower connecting pieces, the two double-sided batteries of the same group are tiled on the corresponding lower connecting pieces, and the lower connecting pieces electrically connect the bottom surfaces of the two double-sided batteries;
B3 The connecting pieces are paved at intervals along the left-right direction; tiling the leftmost upper connector on the leftmost double-sided battery, and electrically connecting the leftmost upper connector with the top surface of the leftmost double-sided battery; tiling the rightmost upper connecting piece on the rightmost double-sided battery, and electrically connecting the rightmost upper connecting piece with the top surface of the rightmost double-sided battery; taking an upper connecting piece between the leftmost upper connecting piece and the rightmost upper connecting piece as a middle upper connecting piece; taking a double-sided battery between the leftmost double-sided battery and the rightmost double-sided battery as a middle double-sided battery; dividing all the middle double-sided batteries into two groups according to the left-to-right sequence; the middle upper connecting piece corresponds to each group of middle double-sided batteries one by one, the middle upper connecting piece is tiled on the two middle double-sided batteries of the corresponding group, and the top surfaces of the two middle double-sided batteries are electrically connected by the middle upper connecting piece;
The leftmost upper connecting piece is used as a left end lead of the battery string; the rightmost upper connector is used as the right end lead of the battery string.
More specifically:
The upper and lower connectors of example 2 employ welding wires or straps.
The double sided battery in example 2 was either a P-type double sided battery or an N-type double sided battery. The double sided battery in example 2 was counted in order from left to right; all the double-sided batteries with odd numbers face upwards, and all the double-sided batteries with even numbers face upwards; or each odd bit double sided cell is back up and each even bit double sided cell is front up.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (11)
1. A series connection method of photovoltaic double-sided batteries is characterized in that a plurality of double-sided batteries are paved with battery layers, and a lower connecting piece layer and an upper connecting piece layer are paved on the surfaces of two sides of each battery layer respectively to form a battery series;
The battery layer comprises a right-side-up double-sided battery and a back-side-up double-sided battery, and the right-side-up double-sided battery and the back-side-up double-sided battery are alternately arranged along the extending direction of the battery string; taking the gap between two adjacent double-sided batteries as an inter-chip gap;
the lower connecting piece layer comprises lower connecting pieces which are paved at intervals along the extending direction of the battery strings; the lower connecting piece is used for bridging the bottom surfaces of two adjacent double-sided batteries, and the inter-chip gap spanned by the lower connecting piece is taken as a lower cross-domain gap;
the upper connecting piece layer comprises upper connecting pieces which are paved at intervals along the extending direction of the battery strings; the upper connecting piece is used for bridging the top surfaces of two adjacent double-sided batteries, and the inter-chip gap spanned by the upper connecting piece is taken as an upper cross-domain gap;
The gaps between the plates are respectively lower cross-domain gaps or upper cross-domain gaps, and the lower cross-domain gaps and the upper cross-domain gaps are alternately arranged along the extending direction of the battery string;
the lower connecting piece and/or the upper connecting piece are/is small sections cut by the long sections of the connecting pieces;
Cutting off the lower connecting pieces arranged at intervals from the long sections of the connecting pieces, integrally transferring the lower connecting pieces arranged at intervals, and synchronously completing tiling actions of all the lower connecting pieces; or firstly spreading the long sections of the connecting pieces along the left-right direction, and then cutting off the lower connecting pieces which are arranged at intervals from the long sections of the connecting pieces; or during the process of pulling the long section of the connector: cutting off the long section of the connecting piece from the lower connecting piece, and synchronously completing tiling and positioning of the lower connecting piece;
Cutting out upper connecting pieces which are arranged at intervals from long sections of the connecting pieces, integrally transferring the upper connecting pieces which are arranged at intervals, and synchronously completing tiling actions of all the upper connecting pieces; or firstly spreading the long sections of the connecting pieces along the left-right direction, and then cutting the long sections of the connecting pieces out of the upper connecting pieces which are arranged at intervals; or during the process of pulling the long section of the connector: cutting off the long section of the connecting piece from the lower connecting piece, and synchronously completing tiling and positioning of the lower connecting piece;
Clamping and positioning the long section of the connecting piece, the lower connecting piece or the upper connecting piece through clamping jaws; or the long section of the connecting piece, the lower connecting piece or the upper connecting piece is positioned by rolling through the roller.
2. The method of claim 1, wherein the plurality of cells are P-type cells or N-type cells.
3. The method for tandem connection of photovoltaic double-sided cells according to claim 2, wherein the plurality of double-sided cells are sequentially tiled in the left-right direction; counting the plurality of double-sided batteries from left to right in sequence; all the double-sided batteries with odd numbers face upwards, and all the double-sided batteries with even numbers face upwards; or each odd bit double sided cell is back up and each even bit double sided cell is front up.
4. The method of claim 1, wherein the upper and lower connectors are wire or ribbon.
5. The method of claim 1, wherein the lower connector layer is tiled first, then the cell layer is tiled over the lower connector layer, and then the upper connector layer is tiled over the cell layer.
6. The method of claim 5, wherein the lower connector layer is welded to the cell layer prior to the upper connector layer being tiled on the cell layer; after the upper connecting piece layer is tiled on the battery layer, the upper connecting piece layer and the battery layer are welded together.
7. The method of claim 5, wherein the lower connector layer, the upper connector layer and the cell layer are welded together after the upper connector layer is tiled on the cell layer.
8. The method for tandem connection of photovoltaic double-sided cells according to claim 1, wherein the lower connector layer is tiled first, then the cell layer is tiled on the lower connector layer, the lower connector layer and the cell layer are welded together, then the cell layer is lifted up and turned over, the turned-over cell layer is tiled on the pre-tiled upper connector layer, and the upper connector layer and the cell layer are welded together.
9. The method of claim 1, wherein the lower connector layers of each cell string in the entire photovoltaic module are tiled simultaneously;
Synchronously tiling battery layers of each battery string in the whole photovoltaic module;
The upper connecting piece layers of all the battery strings in the whole photovoltaic module are synchronously tiled.
10. A method of tandem connection of photovoltaic bifacial cells according to claim 3, characterized in that it comprises the steps of:
A1 A lower connecting piece is paved at intervals along the left-right direction; taking a lower connecting piece between the leftmost lower connecting piece and the rightmost lower connecting piece as a middle lower connecting piece;
a2 A plurality of double-sided batteries are paved at intervals along the left-right direction, so that two adjacent double-sided batteries are respectively right-side up and back-side up, and the right-side up double-sided batteries and the back-side up double-sided batteries are alternately arranged along the left-right direction;
Tiling the leftmost double-sided battery on the leftmost lower connector; tiling the rightmost double-sided battery on the rightmost lower connecting piece; taking a double-sided battery between the leftmost double-sided battery and the rightmost double-sided battery as a middle double-sided battery; dividing all the middle double-sided batteries into two groups according to the left-to-right sequence; enabling each group of middle double-sided batteries to correspond to the middle lower connecting pieces one by one, and enabling two middle double-sided batteries of the same group to be tiled on the corresponding middle lower connecting pieces;
A3 The connecting pieces are paved at intervals along the left-right direction; dividing all the double-sided batteries into two groups according to the left-to-right sequence; the upper connecting piece corresponds to each group of double-sided batteries one by one, and the upper connecting piece is paved on the two double-sided batteries of the corresponding group.
11. A method of tandem connection of photovoltaic bifacial cells according to claim 3, characterized in that it comprises the steps of:
B1 A lower connecting piece is paved at intervals along the left-right direction;
B2 A plurality of double-sided batteries are paved at intervals along the left-right direction, so that two adjacent double-sided batteries are respectively right-side up and back-side up, and the right-side up double-sided batteries and the back-side up double-sided batteries are alternately arranged along the left-right direction; dividing all the double-sided batteries into two groups according to the left-to-right sequence; enabling each group of double-sided batteries to correspond to the lower connecting pieces one by one, and enabling two double-sided batteries of the same group to be tiled on the corresponding lower connecting pieces;
b3 The connecting pieces are paved at intervals along the left-right direction; tiling the leftmost upper connector on the leftmost double-sided battery; tiling the rightmost upper connector on the rightmost double-sided battery; taking an upper connecting piece between the leftmost upper connecting piece and the rightmost upper connecting piece as a middle upper connecting piece; taking a double-sided battery between the leftmost double-sided battery and the rightmost double-sided battery as a middle double-sided battery; dividing all the middle double-sided batteries into two groups according to the left-to-right sequence; the middle upper connecting piece corresponds to each group of middle double-sided batteries one by one, and the middle upper connecting piece is tiled on the two middle double-sided batteries of the corresponding group.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490719A (en) * | 2013-09-28 | 2014-01-01 | 英利能源（中国）有限公司 | Novel photovoltaic module and manufacturing method thereof |
| CN212967724U (en) * | 2020-07-22 | 2021-04-13 | 常州亚玛顿股份有限公司 | Battery module and double-sided power generation photovoltaic module with same |
| CN112670376A (en) * | 2021-03-16 | 2021-04-16 | 常州时创能源股份有限公司 | Connection method of solar cell |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490719A (en) * | 2013-09-28 | 2014-01-01 | 英利能源（中国）有限公司 | Novel photovoltaic module and manufacturing method thereof |
| CN212967724U (en) * | 2020-07-22 | 2021-04-13 | 常州亚玛顿股份有限公司 | Battery module and double-sided power generation photovoltaic module with same |
| CN112670376A (en) * | 2021-03-16 | 2021-04-16 | 常州时创能源股份有限公司 | Connection method of solar cell |
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