CN110061081B - Photovoltaic cell array and photovoltaic module - Google Patents
Photovoltaic cell array and photovoltaic module Download PDFInfo
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- CN110061081B CN110061081B CN201910454083.4A CN201910454083A CN110061081B CN 110061081 B CN110061081 B CN 110061081B CN 201910454083 A CN201910454083 A CN 201910454083A CN 110061081 B CN110061081 B CN 110061081B
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 68
- 239000002184 metal Substances 0.000 claims abstract description 68
- 230000011218 segmentation Effects 0.000 claims abstract description 14
- 238000003475 lamination Methods 0.000 claims abstract description 11
- 230000001154 acute effect Effects 0.000 claims description 3
- 210000004027 cell Anatomy 0.000 claims 12
- 238000004519 manufacturing process Methods 0.000 description 16
- 238000000034 method Methods 0.000 description 13
- 238000005286 illumination Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 238000003466 welding Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material 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
- H01L31/043—Mechanically stacked PV cells
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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
- H01L31/0512—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 made of a particular material or composition of materials
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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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- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Photovoltaic Devices (AREA)
Abstract
The application discloses photovoltaic cell array, including a plurality of battery pieces and flexible metal conducting strip, battery piece upper surface and battery piece lower surface all distribute and have the segmentation electrode, and flexible metal conducting strip connects the segmentation electrode of first battery piece lower surface and the segmentation electrode of second battery piece upper surface in two adjacent battery pieces, and photovoltaic cell array has the lamination structure in the normal direction of battery piece upper surface, and wherein, flexible metal conducting strip all is located the region outside the lamination region with the connection region of segmentation electrode in the lamination structure. Therefore, two adjacent battery pieces are connected by the flexible metal conducting strip, and the resistance of the flexible metal conducting strip is small, so that the consumed power is small, the output power of the photovoltaic cell array is improved, the photovoltaic cell array is of a laminated structure, the number of the battery pieces is increased when the length of the photovoltaic cell array is fixed, and the output power of the photovoltaic cell array is further increased. In addition, the application also provides a photovoltaic module with the advantages.
Description
Technical Field
The application relates to the technical field of solar cells, in particular to a photovoltaic cell array and a photovoltaic module.
Background
With the rapid development of society, the amount of energy required is increasing, but the amount of fossil energy is limited, which is insufficient to supply the demand of social development for a long time, and the consumption of fossil energy also brings about serious environmental pollution, so a new energy is needed to replace fossil energy and promote the harmonious development of society. Solar energy is a renewable energy source with unlimited reserves, free use and no pollutant in the use process, and the photovoltaic industry rapidly develops in recent years.
The internal power loss of the photovoltaic module is reduced, and the output power of the photovoltaic module is increased, so that the pursuit target of a photovoltaic enterprise is always achieved, and the requirements of industry development and clients are met. In order to improve the output power of the photovoltaic module, photovoltaic enterprises push out various manufacturing technologies of the photovoltaic module, such as a shingle technology, square (quasi-square) battery pieces are cut into more and smaller rectangular (quasi-rectangular) battery pieces, front electrodes and rear electrodes of two adjacent sliced battery pieces are mutually overlapped to form a series circuit through conductive adhesive, current between the adjacent battery pieces is transmitted perpendicular to the surfaces of the battery pieces, the internal current of the module is smaller, and the light receiving area inside the module is larger, so that the power and the efficiency of the module are improved.
Compared with the conventional assembly, although the output power of the shingle photovoltaic assembly is improved, the procedures and equipment such as conductive adhesive, curing, terminal welding and the like are additionally added, the process technology is complex, the production cost is high, meanwhile, the resistance of the conductive adhesive is high, and the internal loss of the shingle photovoltaic assembly is still high.
Disclosure of Invention
The purpose of this application is to provide a photovoltaic cell array and photovoltaic module to improve photovoltaic cell array and photovoltaic module's output, reduce assembly manufacturing cost.
In order to solve the technical problem, the application provides a photovoltaic cell array, including a plurality of battery pieces and flexible metal conducting strip, battery piece upper surface and battery piece lower surface all distribute and have the segmentation electrode, flexible metal conducting strip connect in adjacent two first battery piece lower surface in the battery piece the segmentation electrode of battery piece upper surface and second battery piece, just photovoltaic cell array is in the normal direction of battery piece upper surface is last to have a lamination structure, wherein, flexible metal conducting strip with the connection region of segmentation electrode all is located laminate the region beyond the region in the lamination structure.
Optionally, when the segmented electrode is perpendicular to the first side of the battery piece, the number of the segmented electrodes located on the upper surface of the battery piece and the lower surface of the battery piece is 4 to 9, including the end point value, where the first side is a longer side in the rectangular battery piece.
Optionally, the segmented electrodes are uniformly distributed on the upper surface of the battery piece and the lower surface of the battery piece.
Optionally, the width of the segmented electrode ranges from 0.5 mm to 5 mm, inclusive.
Optionally, the length of the segmented electrode ranges from 1 mm to 15 mm, inclusive.
Optionally, the thickness of the flexible metal conductive strip is less than 200 microns.
Optionally, the laminated structure is laminated along first sides of two adjacent battery pieces, wherein the first sides are longer sides in the battery pieces.
Optionally, an included angle between the segmented electrode and the first side of the battery piece is an acute angle.
Optionally, the laminated structure has a laminated region with a width of less than 2 mm.
The application also provides a photovoltaic module, which comprises the photovoltaic cell array.
The application provides a photovoltaic cell array, including a plurality of battery pieces and flexible metal conducting strip, battery piece upper surface and battery piece lower surface all distribute the segmentation electrode, flexible metal conducting strip connect in adjacent two first battery piece lower surface in the battery piece the segmentation electrode of segmentation electrode and second battery piece upper surface, just photovoltaic cell array is in the normal direction of battery piece upper surface has the lamination structure, wherein, flexible metal conducting strip with the connection region of segmentation electrode all is located range beyond the lamination region in the lamination structure. The photovoltaic cell array has the advantages that two adjacent cell pieces are connected through the flexible metal conducting strip, the cost of the flexible metal conducting strip is low, the resistance is small, the power consumed by the flexible metal conducting strip is low, so that the output power of the photovoltaic cell array can be improved, the manufacturing cost of a component is reduced, on the other hand, the two adjacent cell pieces in the photovoltaic cell array are of a laminated structure in the normal direction of the upper surface of the cell piece, the number of the cell pieces can be increased when the length of the photovoltaic cell array is fixed, the area for receiving illumination is further increased, and the output power of the photovoltaic cell array is increased. In addition, the application also provides a photovoltaic module with the advantages.
Drawings
For a clearer description of embodiments of the present application or of the prior art, the drawings that are used in the description of the embodiments or of the prior art will be briefly described, it being apparent that the drawings in the description that follow are only some embodiments of the present application, and that other drawings may be obtained from these drawings by a person of ordinary skill in the art without inventive effort.
Fig. 1 is a cross-sectional view of two adjacent cells in the short side direction of the cells in the photovoltaic cell array of the present application;
fig. 2 to 6 are schematic diagrams showing distribution patterns of metal thin grid lines on the surface of a battery plate;
FIG. 7 is a schematic diagram of the distribution of the segmented electrodes parallel to the long sides of the battery cells;
fig. 8 is a schematic structural diagram of a photovoltaic module according to an embodiment of the present application.
Detailed Description
In order to provide a better understanding of the present application, those skilled in the art will now make further details of the present application with reference to the drawings and detailed description. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
As described in the background art, in the prior art, the front electrode and the rear electrode of two adjacent battery pieces of the battery pieces are overlapped with each other by using the conductive adhesive to form a series circuit, although the output power of the photovoltaic module can be improved to a certain extent, the power consumed in the photovoltaic module is still larger due to larger packaging loss of the module, and the procedures and equipment such as conductive adhesive, curing, terminal welding and the like are additionally added, so that the process technology is complex, and the production cost is high.
In view of this, please refer to fig. 1, fig. 1 is a cross-sectional view of two adjacent cells in a short side direction of the cells in the photovoltaic cell array, the photovoltaic cell array includes a plurality of cells 1 and flexible metal conductive strips 2, segmented electrodes 4 are distributed on the upper surface of the cells and the lower surface of the cells, the flexible metal conductive strips 2 are connected to the segmented electrodes 4 on the lower surface of a first cell and the segmented electrodes 4 on the upper surface of a second cell in two adjacent cells 1, and the photovoltaic cell array has a laminated structure in a normal direction of the upper surface of the cells 1, wherein connection areas of the flexible metal conductive strips and the segmented electrodes are all located in areas outside the laminated area in the laminated structure.
In this embodiment, the purpose of connecting the flexible metal conductive strip 2 to the segment electrode 4 on the lower surface of the first cell and the segment electrode 4 on the upper surface of the second cell in the two adjacent cells 1 is that the resistance of the flexible metal conductive strip 2 is small, and when the photovoltaic cell array receives illumination to generate current, the power lost by the flexible metal conductive strip 2 is small, so that the output power of the photovoltaic cell array is improved. Wherein the width of the flexible metal conductive strip 2 is equal to the width of the segmented electrode 4.
In particular, the flexible metal strips may be solder strips, or flexible strips formed of other metal materials.
Further, in this embodiment, the purpose of providing the photovoltaic cell array with a laminated structure in the normal direction of the upper surface of the photovoltaic cell is that when the length of the photovoltaic cell array is fixed, the photovoltaic cells 1 are laminated, so that the number of the photovoltaic cells 1 in the photovoltaic cell array can be increased, and the area for receiving illumination can be increased, so that the output power of the photovoltaic cell array is improved.
Further, in this embodiment, the connection regions between the flexible metal conductive strips and the segmented electrodes are all located in the region outside the laminated region in the laminated structure, so that when a problem occurs in the connection region, such as the connection is not firm, the reworking process is facilitated when the connection is required.
It should be noted that the battery sheet 1 in the present embodiment is a rectangular (quasi-rectangular) battery sheet, and the ratio of the long side to the short side of the battery sheet 1 ranges from 4 to 20, inclusive.
It should be noted that the battery sheet 1 in the present embodiment may be obtained by, but not limited to, slitting a square (quasi-square) battery sheet or other rectangular (quasi-rectangular) battery sheet.
The segmented electrode 4 is used for collecting current generated by the battery piece and transmitting the current to the flexible metal conducting strip 2, and for the double-sided battery piece, metal thin grid lines are distributed on the upper surface and the lower surface of the double-sided battery piece, and the segmented electrode 4 is connected with the metal thin grid lines to collect the current; for the single-sided battery piece, the upper surface of the single-sided battery piece is distributed with metal fine grid lines, the lower surface of the single-sided battery piece is not provided with metal fine grid lines, but an aluminum back field is arranged, the segmented electrode 4 positioned on the upper surface of the single-sided battery piece is connected with the metal fine grid lines, and the segmented electrode 4 positioned on the lower surface of the single-sided battery piece is directly connected with the aluminum back field.
It should be noted that, in the embodiment, the arrangement manner of the metal fine grid lines on the upper surface of the double-sided battery piece, the lower surface of the double-sided battery piece and the upper surface of the single-sided battery piece is not particularly limited, and as appropriate, referring to fig. 2 to 6, fig. 2 to 6 list the distribution patterns of the five metal fine grid lines 3 on the surface of the battery piece. Preferably, for the double-sided battery plate, the arrangement mode of the metal thin grid lines 3 on the upper surface and the lower surface is the same, so that the production process is simplified, and the production efficiency is improved.
It will be appreciated that when the lower surface of the first cell of the two adjacent cells 1 is the negative electrode, the upper surface of the second cell is the positive electrode, and similarly, when the lower surface of the first cell is the positive electrode, the upper surface of the second cell is the negative electrode.
Specifically, in one embodiment of the present application, the segmented electrodes 4 are distributed parallel to the long sides of the battery plate 1 along the length direction thereof, please refer to fig. 7, but this is not particularly limited thereto, in another embodiment of the present application, the segmented electrodes 4 are distributed perpendicular to the long sides of the battery plate 1 along the length direction thereof, and in other embodiments of the present application, the included angle between the segmented electrodes 4 and the first side of the battery plate is an acute angle, and the first side is the long side of the battery plate 1. It can be understood that, since the flexible metal conductive strips 2 connect the segment electrodes 4 of the adjacent battery pieces 1, the positional relationship between the segment electrodes 4 and the long sides of the battery pieces 1 is that of the flexible metal conductive strips 2 and the long sides of the battery pieces 1, for example, when the segment electrodes 4 are distributed perpendicular to the long sides of the battery pieces 1 along the length direction thereof, the flexible metal conductive strips 2 are also perpendicular to the long sides of the battery pieces 1.
It will also be appreciated that the segmented electrodes 4 transfer the collected current to the flexible metal strips 2, the direction of current flow being parallel to the surface of the cell 1, regardless of the angle the segmented electrodes 4 form with the sides of the cell 1.
The photovoltaic cell array provided by the embodiment comprises a plurality of cell pieces 1 and flexible metal conducting strips 2, wherein segmented electrodes 4 are distributed on the upper surfaces of the cell pieces and the lower surfaces of the cell pieces, the flexible metal conducting strips 2 are connected to the segmented electrodes 4 on the lower surfaces of the first cell pieces and the segmented electrodes 4 on the upper surfaces of the second cell pieces in two adjacent cell pieces 1, the photovoltaic cell array is provided with a laminated structure in the normal direction of the upper surfaces of the cell pieces, and the connection areas of the flexible metal conducting strips and the segmented electrodes are all located in areas outside the laminated area in the laminated structure. In the photovoltaic cell array of the embodiment, two adjacent cell pieces 1 are connected by the flexible metal conducting strip 2, and the flexible metal conducting strip 2 has small resistance and low cost, so that the output power of the photovoltaic cell array can be improved and the manufacturing cost of the component is reduced, on the other hand, the two adjacent cell pieces 1 in the photovoltaic cell array have a laminated structure in the normal direction of the upper surfaces of the cell pieces, and the number of the cell pieces 1 can be increased when the length of the photovoltaic cell array is fixed, so that the area for receiving illumination is increased, and the output power of the photovoltaic cell array is increased; meanwhile, in the prior art, as the conductive adhesive is used, the working procedures such as solidification, terminal welding and the like and corresponding equipment are added in the manufacturing process, so that the process is complex, the production cost is high, and the bonding wires are adopted in the embodiment, so that the production process is simplified, and the production cost is reduced.
Further, in one embodiment of the present application, when the segment electrodes 4 are distributed perpendicularly to the long sides of the battery sheet 1 in the length direction thereof, the number of segment electrodes 4 is not particularly limited in this embodiment.
Alternatively, based on the above embodiments, in one embodiment of the present application, the number of the segmented electrodes 4 may be 1 to 12, including the end point values.
Preferably, when the segmented electrodes 4 are perpendicular to the first sides of the cell 1, the number of the segmented electrodes 4 on the upper surface of the cell and the number of the segmented electrodes on the lower surface of the cell are both 4 to 9, including the end point value, wherein the first sides are rectangular and the longer sides of the cell 1, so that the number of the segmented electrodes 4 is avoided to be too small, the total current of the cell cannot be collected because the number of the segmented electrodes is too small, the waste of partial current is caused, the output power of the photovoltaic cell array cannot be effectively improved, and the number of the segmented electrodes 4 is avoided to be too large because the segmented electrodes 4 need to be connected with the flexible metal conductive strips 2, the area for receiving illumination of the cell 1 is reduced, and the output power of the photovoltaic cell array is reduced.
On the basis of the above embodiments, in one embodiment of the present application, when the number of the segment electrodes 4 is plural, the segment electrodes 4 are uniformly distributed on both the upper surface of the battery sheet and the lower surface of the battery sheet.
Based on the above embodiment, in one embodiment of the present application, the range of the width of the segment electrode 4 is 0.5 mm to 5 mm, including the end point value, so that the width of the segment electrode 4 is avoided to be too narrow, because the flexible metal conductive strip 2 needs to be welded with the segment electrode 4, if the width of the segment electrode 4 is too narrow, the welding between the flexible metal conductive strip 2 and the segment electrode 4 is not firm, meanwhile, the width of the segment electrode 4 is avoided to be too wide, after the flexible metal conductive strip 2 is welded with the segment electrode 4, the area where the segment electrode 4 is located cannot receive illumination to generate electricity, the effective area of the cell 1 is reduced, and the whole output power of the photovoltaic cell array is reduced.
Based on the above embodiment, in one embodiment of the present application, the length of the segment electrode 4 ranges from 1 mm to 15 mm, including the end point value, so that the length of the segment electrode 4 is avoided to be too short, because the flexible metal conductive strip 2 needs to be welded with the segment electrode 4, if the length of the segment electrode 4 is too short, the contact area between the flexible metal conductive strip 2 and the segment electrode 4 is small, so that the welding is not firm, meanwhile, the length of the segment electrode 4 is avoided to be too long, because the area where the segment electrode 4 is located cannot receive light to generate current, if the segment electrode 4 is too long, a larger area of shielding is caused to the cell 1, so that the power generation efficiency of the cell 1 is reduced, and the whole output power of the photovoltaic cell array is reduced.
On the basis of any one of the above embodiments, in one embodiment of the present application, the thickness of the flexible metal conductive strip 2 is smaller than 200 micrometers, so that the thickness of the flexible metal conductive strip 2 is prevented from being too large, because the adjacent two battery pieces 1 are connected in a stacked manner through the flexible metal conductive strip 2, the distance between the adjacent two battery pieces 1 is the thickness of the flexible metal conductive strip 2, when the thickness of the flexible metal conductive strip 2 is large, the distance between the adjacent two battery pieces 1 is also large, so that the overall height of the photovoltaic cell array is high, the use of the photovoltaic cell array is affected, and if the overall height of the photovoltaic cell array is high, the process of manufacturing the photovoltaic cell array into the photovoltaic module is easy to cause the battery pieces 1 in the photovoltaic cell array to generate fragments when laminating, the qualification rate of products is reduced, and the production cost is improved.
Preferably, in one embodiment of the present application, the laminated structure is laminated along first sides of two adjacent battery pieces 1, wherein the first sides are longer sides in the battery pieces 1. Preferably, the metal thin grid lines 3 are arranged in parallel to the short sides of the battery pieces 1, the laminated structure is laminated along the first sides of two adjacent battery pieces 1, namely, two adjacent battery pieces 1 are laminated along the long sides of the battery pieces 1, the metal thin grid lines 3 on the surfaces of the battery pieces 1 are responsible for bearing the current in the battery pieces 1 and transporting the current out of the battery pieces 1, the distance of the current flowing in the metal thin grid lines 3 is the distance of the short sides of the battery pieces 1, the shorter the distance of the current flowing is, the less power is consumed inside the battery pieces 1, and therefore the power output by the photovoltaic cell array is larger; in addition, two adjacent battery pieces 1 are laminated along the long sides of the battery pieces 1, the existing production equipment is not required to be improved when the photovoltaic module is manufactured, and the process flow is simple.
Preferably, in one embodiment of the present application, the width of the laminated area in the laminated structure is less than 2 mm, so that the excessive width of the laminated area in the laminated structure of the photovoltaic cell array is avoided, because the laminated area cannot receive light, that is, the effective area of the cell sheet 1 is reduced due to the existence of the laminated area, which results in a reduction of the overall output power of the photovoltaic cell array.
Preferably, when the battery pieces 1 are laminated in accordance with the long sides of the battery pieces 1, the length of the flexible metal conductive strip 2 connecting the adjacent two battery pieces 1 is less than one half of the length of the short sides of the battery pieces 1.
The application further provides a photovoltaic module, please refer to fig. 8, fig. 8 is a schematic structural diagram of the photovoltaic module provided in the embodiment of the present application, and the photovoltaic module includes a glass substrate 5, an EVA film layer 6, any one of the photovoltaic cell arrays 7, the EVA film layer 8 and a back plate 9 disclosed in the above embodiment, which are sequentially stacked from top to bottom.
The photovoltaic cell array in the photovoltaic module provided by the embodiment comprises a plurality of cell pieces 1 and flexible metal conducting strips 2, wherein the upper surfaces of the cell pieces and the lower surfaces of the cell pieces are respectively provided with a segmented electrode 4, the flexible metal conducting strips 2 are connected to the segmented electrodes 4 of the lower surfaces of the first cell pieces and the segmented electrodes 4 of the upper surfaces of the second cell pieces in two adjacent cell pieces 1, the photovoltaic cell array is provided with a laminated structure in the normal direction of the upper surfaces of the cell pieces, and the connection areas of the flexible metal conducting strips and the segmented electrodes are all located in areas outside the laminated area in the laminated structure. Two adjacent battery pieces 1 in the photovoltaic cell array are connected by the flexible metal conducting strip 2, and because the flexible metal conducting strip 2 has small resistance and low cost, and the flexible metal conducting strip 2 consumes less power, the output power of the photovoltaic cell array can be improved, and the manufacturing cost of the assembly is reduced, on the other hand, two adjacent battery pieces 1 in the photovoltaic cell array have a laminated structure in the normal direction of the upper surface of the battery pieces, the number of the battery pieces 1 can be increased at a certain length of the photovoltaic cell array, the area for receiving illumination is further increased, and the output power of the photovoltaic cell array is increased.
In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, so that the same or similar parts between the embodiments are referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The photovoltaic cell array and the photovoltaic cell provided by the application are described in detail above. Specific examples are set forth herein to illustrate the principles and embodiments of the present application, and the description of the examples above is only intended to assist in understanding the methods of the present application and their core ideas. It should be noted that it would be obvious to those skilled in the art that various improvements and modifications can be made to the present application without departing from the principles of the present application, and such improvements and modifications fall within the scope of the claims of the present application.
Claims (10)
1. The utility model provides a photovoltaic cell array, its characterized in that includes a plurality of battery pieces and flexible metal conducting strip, battery piece upper surface and battery piece lower surface all distribute the segmentation electrode, flexible metal conducting strip connect in two adjacent among the battery piece first battery piece lower surface the segmentation electrode and the second battery piece upper surface, just photovoltaic cell array is in the normal direction of battery piece upper surface has the lamination structure, wherein, flexible metal conducting strip with the connection region of segmentation electrode all is located the region outside the lamination region in the lamination structure.
2. The array of claim 1, wherein the number of segmented electrodes on the upper surface of the cell and the lower surface of the cell is 4 to 9, inclusive, when the segmented electrodes are perpendicular to a first edge of the cell, wherein the first edge is the longer edge of the rectangular cell.
3. The array of claim 2, wherein the segmented electrodes are uniformly distributed on both the upper and lower cell surfaces.
4. The array of claim 3, wherein the segmented electrodes have a width ranging from 0.5 mm to 5 mm inclusive.
5. The array of claim 4, wherein the segmented electrodes have a length ranging from 1 millimeter to 15 millimeters, inclusive.
6. The array of claim 1, wherein the flexible metal conductive strips have a thickness of less than 200 microns.
7. The array of claim 1, wherein the stacked structure is stacked along a first side of two adjacent ones of the cells, wherein the first side is a longer side of the rectangular shaped cells.
8. The array of claim 1, wherein the segmented electrode forms an acute angle with the first side of the cell.
9. The array of photovoltaic cells of any of claims 1 to 8 wherein the width of the laminated region in the laminated structure is less than 2 mm.
10. A photovoltaic module comprising an array of photovoltaic cells according to any one of claims 1 to 9.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410231406.4A CN118073453A (en) | 2019-05-28 | 2019-05-28 | Photovoltaic cell array and photovoltaic module |
| CN201910454083.4A CN110061081B (en) | 2019-05-28 | 2019-05-28 | Photovoltaic cell array and photovoltaic module |
| MA052265A MA52265A (en) | 2019-05-28 | 2019-08-23 | NETWORK OF PHOTOVOLTAIC CELLS AND PHOTOVOLTAIC ASSEMBLY |
| JP2020531984A JP7209720B2 (en) | 2019-05-28 | 2019-08-23 | Solar cell arrays and photovoltaic modules |
| AU2019382301A AU2019382301B2 (en) | 2019-05-28 | 2019-08-23 | Photovoltaic cell array and photovoltaic module |
| US16/766,295 US20210408314A1 (en) | 2019-05-28 | 2019-08-23 | Photovoltaic cell array and photovoltaic module |
| EP19883328.7A EP3790060A1 (en) | 2019-05-28 | 2019-08-23 | Photovoltaic cell array and photovoltaic assembly |
| PCT/CN2019/102127 WO2020237854A1 (en) | 2019-05-28 | 2019-08-23 | Photovoltaic cell array and photovoltaic assembly |
| US18/110,132 US20230223489A1 (en) | 2019-05-28 | 2023-02-15 | Photovoltaic cell array and photovoltaic module |
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