CN111114108A - Solar cell positive electrode screen printing plate - Google Patents
Solar cell positive electrode screen printing plate Download PDFInfo
- Publication number
- CN111114108A CN111114108A CN202010009802.4A CN202010009802A CN111114108A CN 111114108 A CN111114108 A CN 111114108A CN 202010009802 A CN202010009802 A CN 202010009802A CN 111114108 A CN111114108 A CN 111114108A
- Authority
- CN
- China
- Prior art keywords
- solar cell
- width
- grid
- fine
- front electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007650 screen-printing Methods 0.000 title claims description 59
- 230000007423 decrease Effects 0.000 claims description 4
- 239000002002 slurry Substances 0.000 abstract description 31
- 230000011218 segmentation Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 14
- 238000007639 printing Methods 0.000 description 9
- 238000002360 preparation method Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/14—Details
- B41F15/34—Screens, Frames; Holders therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/14—Details
- B41F15/34—Screens, Frames; Holders therefor
- B41F15/36—Screens, Frames; Holders therefor flat
-
- 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
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Engineering & Computer Science (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Sustainable Development (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electromagnetism (AREA)
- Life Sciences & Earth Sciences (AREA)
- Computer Hardware Design (AREA)
- Sustainable Energy (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Photovoltaic Devices (AREA)
- Printing Methods (AREA)
Abstract
The application discloses solar cell positive electrode half tone, including the frame, be located the silk screen of frame, be provided with many parallels main bars on the silk screen, a plurality of thin bars that link to each other with main bars, wherein, thin bars divide into first segmentation, the second segmentation that links to each other with first segmentation, and first segmentation is the horn mouth shape and is connected with main bars, and wherein, the position department that links to each other with main bars in the first segmentation is the position that the width is the biggest in the horn mouth shape. According to the technical scheme, the resistance of the slurry at the position where the fine grid is connected with the main grid is reduced through the shape of the horn mouth, so that the contact performance of the slurry and the solar cell is improved, the slurry leakage amount at the position is increased by taking the position where the fine grid is connected with the main grid as the position with the largest width in the shape of the horn mouth, the slurry amount coated at the position on the solar cell is increased, and the grid breakage rate at the position where the fine grid is connected with the main grid in the solar cell is reduced.
Description
Technical Field
The application relates to the technical field of solar cell manufacturing, in particular to a solar cell front electrode screen printing plate.
Background
At present, the photovoltaic industry still mainly uses crystalline silicon solar cells, and during the manufacturing process, a screen printing plate is required to be used for screen printing to prepare an electrode, wherein the used screen printing plate comprises a front electrode screen printing plate used for preparing a front electrode of the solar cell and a back electrode screen printing plate used for preparing a back electrode of the solar cell.
In order to improve the efficiency of the solar cell, at present, the fine grid in the front electrode screen is thinner and thinner, that is, the width of the fine grid is smaller and smaller, and the position where the fine grid is connected with the main grid is a right angle. When the front electrode screen printing plate is used for preparing the front electrode, the connecting position of the fine grid and the main grid is a right angle, so that the slurry can be subjected to larger resistance in the printing process, the contact performance of the slurry and the solar cell can be reduced, and the grid breakage rate of the connecting position of the fine grid and the main grid in the solar cell can be increased. In addition, because the contact area of the fine grid at the position where the fine grid is connected with the main grid in the front electrode screen is relatively small, correspondingly, less slurry is coated on the position on the solar cell, and therefore, the grid breaking rate of the position where the fine grid is connected with the main grid in the solar cell is increased.
In summary, how to improve the conventional front electrode screen printing plate to reduce the grid breakage rate at the connecting position of the fine grid and the main grid in the solar cell when the front electrode of the solar cell is prepared by screen printing is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present application provides a front electrode screen for a solar cell, which is used to improve the existing front electrode screen to reduce the grid breakage rate at the position where a fine grid is connected with a main grid in the solar cell when the front electrode of the solar cell is prepared by screen printing.
In order to achieve the above purpose, the present application provides the following technical solutions:
the utility model provides a solar cell positive electrode half tone, includes the frame, is located the silk screen in the frame, be provided with many parallel main bars on the silk screen, with many fine grids that the main bar is connected, wherein:
the fine grid is divided into a first section and a second section connected with the first section, the first section is in a horn mouth shape and is connected with the main grid, and the position, connected with the main grid, in the first section is the position with the largest width in the horn mouth shape.
Preferably, the second segment in the fine grid on the first side of the main grid is of an equal-width structure;
the second section of the fine grid positioned on the second side of the main grid comprises a gradual change structure connected with the bell mouth shape and an equal-width structure connected with the gradual change structure, and the width of the fine grid is gradually reduced from the bell mouth shape to the gradual change structure;
wherein, the direction from the first side of the main grid to the second side of the main grid is the direction of screen printing.
Preferably, an indication mark for indicating the direction of screen printing is provided on the frame.
Preferably, the indicator is an arrow.
Preferably, the second segments of the fine grids on the first side and the second side of the main grid respectively comprise a gradual change structure connected with the bell mouth shape and an equal width structure connected with the gradual change structure, and the width of the fine grids is gradually reduced from the bell mouth shape to the gradual change structure.
Preferably, the number of gradation steps of the gradation structure is 2 or more.
Preferably, the gradual change structure is a step gradual change structure.
Preferably, the gradual change structure is a slope gradual change structure.
Preferably, the width at the widest position of the flare shape is from 100 μm to 300 μm, inclusive, the width at the narrowest position of the flare shape is from 60 μm to 120 μm, inclusive, and the length of the flare shape is from 0.62mm to 1.3mm, inclusive, wherein the width at the widest position of the flare shape is greater than the width at the narrowest position of the flare shape;
the width at the widest position of the graded structure is 60-120 μm, inclusive, the width at the narrowest position of the graded structure is 26.5-53 μm, inclusive, and the length of the graded structure is 4-8 mm, inclusive.
Preferably, the width of the main grid is gradually reduced from one end of the wire mesh to the other end.
The application provides a solar cell positive electrode half tone, including the frame, be located the silk screen of frame, be provided with many parallels main bars on the silk screen, a plurality of thin bars that link to each other with main bars, wherein, thin bars divide into first segmentation, the second segmentation that links to each other with first segmentation, and first segmentation is the horn mouth shape and is connected with main bars, and wherein, the position department that links to each other with main bars in the first segmentation is the position that the width is the biggest in the horn mouth shape.
According to the technical scheme, the fine grid in the positive electrode screen printing plate of the solar cell is divided into the first section and the second section connected with the first section, the first section is connected with the main grid and is in the shape of the bell mouth, meanwhile, the position, connected with the main grid, in the first section is the position with the largest width in the shape of the bell mouth, the resistance of the slurry at the position, connected with the main grid, of the fine grid is reduced through the shape of the bell mouth, so that the contact performance of the slurry and the solar cell is improved, the slurry leakage amount at the position is increased through the condition that the position, connected with the main grid, of the fine grid is the position with the largest width in the shape of the bell mouth, the slurry amount coated at the position on the solar cell is increased, and the grid breakage rate at the position, connected with the main grid, of the solar cell is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a front electrode screen of a solar cell according to an embodiment of the present disclosure;
fig. 2 is a first enlarged partial view of a main grid and a fine grid in the solar cell front electrode screen printing plate according to the embodiment of the present disclosure;
fig. 3 is a second partially enlarged view of a main grid and a fine grid in the solar cell front electrode screen printing plate according to the embodiment of the present disclosure;
fig. 4 is a partially enlarged view of another solar cell front electrode screen provided in the embodiment of the present application;
fig. 5 is a partially enlarged view of a front electrode screen of another solar cell according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1 to fig. 3, in which, fig. 1 shows a schematic structural diagram of a front electrode screen of a solar cell provided in an embodiment of the present application, fig. 2 shows a first partial enlarged view of a main grid and a fine grid in the front electrode screen of the solar cell provided in the embodiment of the present application, and fig. 3 shows a second partial enlarged view of the main grid and the fine grid in the front electrode screen of the solar cell provided in the embodiment of the present application, a front electrode screen of the solar cell provided in the embodiment of the present application may include a frame 1, a silk screen 2 located in the frame 1, and a plurality of parallel main grids 3 and a plurality of fine grids 4 connected to the main grids 3 are arranged on the silk screen 2, where:
the fine grid 4 is divided into a first section 41 and a second section 42 connected with the first section 41, the first section 41 is in a bell mouth shape and is connected with the main grid 3, wherein the position, connected with the main grid 3, in the first section 41 is the position with the largest width in the bell mouth shape.
The solar cell positive electrode screen printing plate provided by the application can comprise a frame 1 and a silk screen 2 positioned in the frame 1, wherein a plurality of parallel main grids 3 and a plurality of fine grids 4 connected with the main grids 3 are arranged on the silk screen 2, the main grids 3 and the fine grids 4 can be mutually vertical, the main grids 3 arranged in the silk screen 2 are used for preparing the solar cell positive electrode main grids, and the fine grids 4 arranged in the silk screen 2 are used for preparing the solar cell positive electrode fine grids.
In the solar cell front electrode screen, the fine grid 4 is divided into a first segment 41 and a second segment 42 connected with the first segment 41, wherein the first segment 41 is connected with the main grid 3, and the first segment 41 is in a bell mouth shape, that is, the position where the fine grid 4 is connected with the main grid 3 is not right-angled any more. Correspondingly, when the solar cell front electrode screen printing plate provided by the application is used for screen printing, the resistance of the slurry at the connecting position of the fine grid 4 and the main grid 3 (namely the bell-mouth-shaped position) can be reduced, so that the slurry can be more smoothly leaked to the surface of the solar cell through the solar cell front electrode screen printing plate, the contact performance of the slurry and the solar cell is improved, and the grid breakage rate of the connecting position of the fine grid and the main grid in the solar cell is reduced. In addition, the second segment 42 connected with the first segment 41 in the fine grid 4 is used for preparing a part of the solar cell fine grid except for the part connected with the main grid, so that the fine grid in the solar cell is obtained through the first segment 41 and the second segment 42 of the fine grid 4 in the solar cell front electrode screen, and the fine grid in the solar cell can receive the current generated inside the solar cell and send the current to the main grid connected with the current.
Meanwhile, in the front electrode screen of the solar cell, the width of the bell mouth shape is gradually reduced along the direction departing from the main grid 3, namely the position, connected with the main grid 3, in the first segment 41 is the position with the largest width in the bell mouth shape, so as to increase the contact area between the fine grid 4 and the main grid 3, and accordingly, when the front electrode screen of the solar cell is used for screen printing, the slurry leakage amount of slurry at the position, connected with the main grid 3, of the fine grid 4 can be increased, so that the slurry amount coated at the position on the solar cell can be increased, the contact area at the position, connected with the main grid, of the fine grid in the solar cell is increased, and the grid breakage rate at the position, connected with the main grid, of the fine grid in the solar cell is reduced.
According to the technical scheme, the fine grid in the positive electrode screen printing plate of the solar cell is divided into the first section and the second section connected with the first section, the first section is connected with the main grid and is in the shape of the bell mouth, meanwhile, the position, connected with the main grid, in the first section is the position with the largest width in the shape of the bell mouth, the resistance of the slurry at the position, connected with the main grid, of the fine grid is reduced through the shape of the bell mouth, so that the contact performance of the slurry and the solar cell is improved, the slurry leakage amount at the position is increased through the condition that the position, connected with the main grid, of the fine grid is the position with the largest width in the shape of the bell mouth, the slurry amount coated at the position on the solar cell is increased, and the grid breakage rate at the position, connected with the main grid, of the solar cell is reduced.
Referring to fig. 4, a partial enlarged view of another solar cell front electrode screen provided in the embodiment of the present application is shown. In the solar cell front electrode screen printing plate provided by the embodiment of the application, the second segments 42 in the fine grids 4 positioned on the first side of the main grid 3 are of an equal-width structure 421;
the second segment 42 of the fine grid 4 on the second side of the main grid 3 may include a gradual change structure 420 connected with the bell mouth shape, and an equal width structure 421 connected with the gradual change structure 420, wherein the width of the fine grid 4 is gradually reduced from the bell mouth shape to the gradual change structure 420;
wherein, the direction from the first side of the main grid 3 to the second side of the main grid 3 is the direction of screen printing.
In the solar cell front electrode screen printing plate provided by the application, the second segment 42 in the fine grid 4 on the first side of the main grid 3 may be an equal-width structure 421, and the second segment 42 in the fine grid 4 on the second side of the main grid 3 may include a gradual change structure 420 connected to the bell mouth shape and an equal-width structure 421 connected to the gradual change structure 420, where the widths of the fine grid 4 and the gradual change structure 420 are gradually reduced from the bell mouth shape to the gradual change structure 420, in addition, the width of the fine grid 4 in the equal-width structure 421 is not changed, and meanwhile, the direction from the first side of the main grid 3 to the second side of the main grid 3 is the screen printing direction.
When the solar cell front electrode screen printing plate is used for screen printing, the change process of the width of the fine grid 4 in the printing process is as follows: the thin grid 4 at the knife-down position is the equal-width structure 421 (i.e. the knife is cut down from the equal-width structure 421 at the first side of the main grid 3), then, when the scraper moves along the screen printing direction, the width of the thin grid 4 gradually increases (i.e. corresponding to the bell mouth shape at the first side of the main grid 3), and at the knife-retracting position, the width of the thin grid 4 gradually decreases until no change occurs (i.e. corresponding to the bell mouth shape at the second side of the main grid 3, the gradual-change structure 420 and the equal-width structure 421). In the process, the resistance of the slurry at the position of the lower cutter gradually changes along with the shape of the bell mouth and the gradual change structure 420, and compared with the current situation that the resistance of the slurry at the position of the lower cutter changes suddenly, the design of the front electrode screen printing plate of the solar cell can reduce the grid breakage rate in the process of printing and preparing the fine grid in the solar cell, so that the performance and the reliability of the solar cell are improved, and the preparation cost of the solar cell is reduced.
According to the solar cell front electrode screen printing plate provided by the embodiment of the application, the frame 1 is provided with the indicating marks for indicating the screen printing direction.
In order to enable a worker to simply and clearly know the screen printing direction, an indication mark for indicating the screen printing direction can be arranged on the frame 1 of the solar cell front electrode screen printing plate, so that the worker can determine the screen printing direction according to the indication mark during screen printing and perform screen printing according to the screen printing direction, and the performance and reliability of the finally prepared solar cell are improved.
According to the solar cell front electrode screen printing plate provided by the embodiment of the application, the indication mark is an arrow.
The indication mark for indicating the screen printing direction provided on the frame 1 may be an arrow, so as to simply, directly and clearly indicate the screen printing direction.
Referring to fig. 5, a partial enlarged view of a front electrode screen of another solar cell provided in the embodiment of the present application is shown. According to the solar cell front electrode screen printing plate provided by the embodiment of the application, the second segments 42 of the fine grids 4 positioned on the first side and the second side of the main grid 3 can respectively comprise the gradual change structure 420 connected with the bell mouth shape and the equal width structure 421 connected with the gradual change structure 420, and the width of the fine grids 4 is gradually reduced from the bell mouth shape to the gradual change structure 420.
In addition to providing the fine grids 4 with the second segments 42 of the equal-width structures 421 on the first side of the main grid 3 and providing the fine grids 4 with the second segments 42 comprising the gradual structures 420 and the equal-width structures 421 on the second side of the main grid 3, the second segments 42 of the fine grids 4 on the first side and the second side of the main grid 3 can each comprise the gradual structures 420 connected with the bell mouth shape and the equal-width structures 421 connected with the gradual structures 420, and the widths of the fine grids 4 are gradually reduced from the bell mouth shape to the gradual structures 420 and are kept unchanged on the equal-width structures 421, i.e. the fine grids 4 on both sides of the main grid 3 can be symmetrically distributed.
When the screen printing is performed by using the solar cell front electrode screen printing plate, in addition to that the resistance borne by the slurry at the position of the cutter receiving position gradually changes, the width of the thin grid 4 at the position of the cutter is gradually increased from constant (namely corresponding to the shape from the constant-width structure 421 to the gradual-change structure 420 to the bell mouth), so that the resistance borne by the slurry in the cutter receiving process gradually decreases, and accordingly, the contact performance of the slurry and the corresponding position in the solar cell can be improved, and the printing preparation quality of the thin grid of the solar cell is improved.
In the solar cell front electrode screen printing plate provided by the embodiment of the application, the gradation grading number of the gradation structure 420 is greater than or equal to 2.
In the front electrode screen of the solar cell, the number of gradation steps of the gradation structure 420 included in the second segment 42 of the fine grid 4 may be greater than or equal to 2, wherein in fig. 4 and 5, the number of gradation steps of the gradation structure 420 is 2.
The resistance borne by the slurry in the printing process can be gradually changed by arranging the multistage gradual change, so that the contact performance of the slurry and the solar cell can be improved, and the printing preparation quality of the fine grid in the solar cell can be improved. Of course, in the gradation structure 420 of the second section 42 of the fine grid 4, the gradation number thereof can also be set to 1, which reduces the complexity and cost of the screen printing process for preparing the front electrode of the solar cell.
In the front electrode screen printing plate of the solar cell provided by the embodiment of the present application, the gradual change structure 420 is a step gradual change structure.
In the second segment 42 of the fine grid 4, the gradual change structure 420 may be specifically a step gradual change structure, that is, in the gradual change structure 420, the fine grid 4 may be regarded as being formed by combining a plurality of strips with different widths, and meanwhile, a step shape may also be formed between the gradual change structure 420 and the bell mouth shape, so as to control the width of the fine grid 4 in the front electrode screen of the solar cell.
In the front electrode screen printing plate of the solar cell provided by the embodiment of the present application, the gradual change structure 420 is a slope gradual change structure.
In the second section 42 of the fine grid 4, the gradual change structure 420 may be a slope gradual change structure, that is, in the gradual change structure 420, the shape of the fine grid 4 is changed smoothly, and there is no step, so that the resistance applied to the paste may be changed continuously, thereby improving the printing preparation quality of the fine grid in the solar cell.
According to the solar cell front electrode screen printing plate provided by the embodiment of the application, the width of the widest position of the bell mouth shape can be 100 μm to 300 μm including end points, the width of the narrowest position of the bell mouth shape can be 60 μm to 120 μm including end points, and the length of the bell mouth shape can be 0.62mm to 1.3mm including end points, wherein the width of the widest position of the bell mouth shape is greater than the width of the narrowest position of the bell mouth shape;
the width at the widest position of the grading structure 420 may be 60 μm-120 μm, inclusive, the width at the narrowest position of the grading structure 420 may be 26.5 μm-53 μm, inclusive, and the length of the grading structure 420 may be 4mm-8mm, inclusive.
In the front electrode screen fine grids 4 of the solar cell, the width of the widest position of the bell mouth shape can be 100 μm to 300 μm (inclusive), the width of the narrowest position of the bell mouth shape can be 60 μm to 120 μm (inclusive), that is, the width of the fine grids 4 at the position connected with the main grid 3 can be 100 μm to 300 μm (inclusive), the width of the fine grids 4 at the position where the bell mouth shape ends can be 60 μm to 120 μm (inclusive), and the length of the bell mouth shape can be 0.62mm to 1.3mm (inclusive), compared with the contact width of the existing fine grids 4 and the main grid 3 being 57 μm, the front electrode screen of the solar cell provided by the application can greatly increase the contact area of the fine grids 4 and the main grid 3, thereby increasing the coating amount of the slurry at the corresponding position in the solar cell, so as to improve the grid breaking rate of the connecting position of the fine grid 4 and the main grid in the solar cell.
In the second section 42 of the fine grid 4, the width of the widest position of the graded structure 420 is 60 μm to 120 μm (including an end point value, and in addition, the width may be smaller than the width of the narrowest position of the bell mouth shape), the width of the narrowest position of the graded structure 420 is 26.5 μm to 53 μm (including an end point value), that is, the width of the fine grid 4 at the position connected with the bell mouth shape may be 60 μm to 120 μm (including an end point value), the width at the position connected with the constant-width structure 421 may be 26.5 μm to 53 μm (including an end point value), and the width of the constant-width structure 421 may be 26.5 μm, so that the resistance to the slurry during the printing process can be gradually changed, thereby improving the printing preparation quality of the fine grid 4 in the solar cell. It should be noted that, the width of the gradual change structure 420 may be gradually changed in a step gradual change manner or in a slope gradual change manner in the gradual change process.
Of course, the above dimensions can be adjusted accordingly according to the actual requirements of the solar cell preparation.
According to the solar cell front electrode screen printing plate provided by the embodiment of the application, the width of the main grid 3 is gradually reduced from one end of the screen 2 to the other end.
In the positive electrode screen printing plate of the solar cell, the width of the main grid 3 can be gradually reduced from one end of the screen 2 to the other end, so that the use amount of slurry in the screen printing process is reduced, the screen printing cost is reduced, meanwhile, the shielding of the solar cell main grid on the solar cell is reduced, the light receiving area of the solar cell is increased, and the power generation amount of the solar cell is improved.
Of course, in the solar cell front screen, the main grid 3 may also adopt an equal-width structure, and the structure of the main grid 3 is not limited in this application.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include elements inherent in the list. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. In addition, parts of the above technical solutions provided in the embodiments of the present application, which are consistent with the implementation principles of corresponding technical solutions in the prior art, are not described in detail so as to avoid redundant description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a solar cell positive electrode half tone, includes the frame, is located the silk screen in the frame, its characterized in that, be provided with many parallel main bars on the silk screen, with many fine grids that the main bar is connected, wherein:
the fine grid is divided into a first section and a second section connected with the first section, the first section is in a horn mouth shape and is connected with the main grid, and the position, connected with the main grid, in the first section is the position with the largest width in the horn mouth shape.
2. The solar cell front electrode screen according to claim 1, wherein the second segments of the fine grids on the first side of the main grid are of equal width structure;
the second section of the fine grid positioned on the second side of the main grid comprises a gradual change structure connected with the bell mouth shape and an equal-width structure connected with the gradual change structure, and the width of the fine grid is gradually reduced from the bell mouth shape to the gradual change structure;
wherein, the direction from the first side of the main grid to the second side of the main grid is the direction of screen printing.
3. The solar cell front electrode screen printing plate according to claim 2, wherein an indication mark for indicating the screen printing direction is arranged on the frame.
4. The screen printing plate for front electrodes of solar cells according to claim 3, wherein the indication mark is an arrow.
5. The solar cell front electrode screen according to claim 1, wherein the second segments of the fine grids on the first and second sides of the main grid each comprise a graded structure connected to the flare shape, and a constant width structure connected to the graded structure, and the width of the fine grids gradually decreases from the flare shape to the graded structure.
6. The solar cell front electrode screen according to any one of claims 2 to 5, wherein the gradation structure has a gradation step number of 2 or more.
7. The solar cell front electrode screen according to claim 6, wherein the grading structure is a stepped grading structure.
8. The solar cell front electrode screen according to claim 6, wherein the grading structure is a slope grading structure.
9. The solar cell front electrode screen of claim 6, wherein the width at the widest position of the bell mouth shape is from 100 μ ι η to 300 μ ι η, inclusive, the width at the narrowest position of the bell mouth shape is from 60 μ ι η to 120 μ ι η, inclusive, and the length of the bell mouth shape is from 0.62mm to 1.3mm, inclusive, wherein the width at the widest position of the bell mouth shape is greater than the width at the narrowest position of the bell mouth shape;
the width at the widest position of the graded structure is 60-120 μm, inclusive, the width at the narrowest position of the graded structure is 26.5-53 μm, inclusive, and the length of the graded structure is 4-8 mm, inclusive.
10. The solar cell front electrode screen according to claim 1, wherein the width of the main grid gradually decreases from one end of the screen to the other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010009802.4A CN111114108A (en) | 2020-01-06 | 2020-01-06 | Solar cell positive electrode screen printing plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010009802.4A CN111114108A (en) | 2020-01-06 | 2020-01-06 | Solar cell positive electrode screen printing plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111114108A true CN111114108A (en) | 2020-05-08 |
Family
ID=70486828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010009802.4A Pending CN111114108A (en) | 2020-01-06 | 2020-01-06 | Solar cell positive electrode screen printing plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111114108A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111916514A (en) * | 2020-07-28 | 2020-11-10 | 江苏辉伦太阳能科技有限公司 | Novel seamless photovoltaic module and preparation method thereof |
| CN112071922A (en) * | 2020-09-09 | 2020-12-11 | 西安宏星电子浆料科技股份有限公司 | Screen printing method for solar front silver grid line |
| CN113284956A (en) * | 2021-04-08 | 2021-08-20 | 李铁 | Improved crystalline silicon solar cell printing process |
Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950761A (en) * | 2010-09-29 | 2011-01-19 | 上海晶澳太阳能科技有限公司 | Novel solar cell and solar photovoltaic module composed thereof |
| US20120329205A1 (en) * | 2010-03-24 | 2012-12-27 | Panasonic Corporation | Electrode formation system for solar cell and electrode formation method for solar cell |
| CN202855747U (en) * | 2012-08-08 | 2013-04-03 | 浙江丰球光伏科技股份有限公司 | High-efficient polycrystalline cell sheet |
| CN203232878U (en) * | 2013-04-27 | 2013-10-09 | 中利腾晖光伏科技有限公司 | Solar cell front electrode structure |
| CN103426942A (en) * | 2013-08-29 | 2013-12-04 | 中利腾晖光伏科技有限公司 | Grid line structure of crystalline silicon cell |
| CN203398122U (en) * | 2013-08-29 | 2014-01-15 | 中利腾晖光伏科技有限公司 | Grid line structure of crystalline silicon cell |
| CN204196425U (en) * | 2014-11-07 | 2015-03-11 | 乐山新天源太阳能科技有限公司 | For the half tone of printing solar cell front electrode |
| CN104638032A (en) * | 2015-01-22 | 2015-05-20 | 中电电气（南京）光伏有限公司 | Positive electrode grid line of solar cell, solar cell and manufacturing method of solar cell |
| CN204659172U (en) * | 2015-05-20 | 2015-09-23 | 江苏盛矽电子科技有限公司 | There is the battery screen printing plate of main grid engraved structure |
| CN205767990U (en) * | 2016-06-28 | 2016-12-07 | 苏州阿特斯阳光电力科技有限公司 | A kind of front electrode of solar battery half tone |
| CN205881916U (en) * | 2016-07-21 | 2017-01-11 | 内蒙古日月太阳能科技有限责任公司 | Two -sided electricity generation solar battery of five main grid N types |
| CN206589444U (en) * | 2017-02-24 | 2017-10-27 | 苏州阿特斯阳光电力科技有限公司 | A kind of solar battery sheet gradient prints half tone |
| CN207353262U (en) * | 2017-10-27 | 2018-05-11 | 无锡尚德太阳能电力有限公司 | Crystal silicon solar batteries front electrode graphic structure |
| CN108183139A (en) * | 2017-12-20 | 2018-06-19 | 横店集团东磁股份有限公司 | Solar battery sheet |
| CN208256683U (en) * | 2018-06-11 | 2018-12-18 | 泰州隆基乐叶光伏科技有限公司 | A kind of electrode structure at right side and solar battery of more main grid batteries |
| CN109037363A (en) * | 2018-07-24 | 2018-12-18 | 浙江爱旭太阳能科技有限公司 | The positive electrode of crystal silicon solar batteries with anti-breaking grid function |
| CN208352302U (en) * | 2018-06-25 | 2019-01-08 | 浙江晶科能源有限公司 | A kind of solar energy laminated batteries and solar energy stacked wafer moudle |
| CN109244156A (en) * | 2018-09-13 | 2019-01-18 | 北京太阳能电力研究院有限公司 | More main grid solar battery positive electrode patterns |
| CN109572170A (en) * | 2017-09-29 | 2019-04-05 | 江苏天源太阳能发电有限公司 | A kind of solar battery substep printing technology halftone |
| CN208978434U (en) * | 2018-07-24 | 2019-06-14 | 浙江爱旭太阳能科技有限公司 | For the molding crystal silicon solar batteries halftone of positive electrode hollow out |
-
2020
- 2020-01-06 CN CN202010009802.4A patent/CN111114108A/en active Pending
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120329205A1 (en) * | 2010-03-24 | 2012-12-27 | Panasonic Corporation | Electrode formation system for solar cell and electrode formation method for solar cell |
| CN101950761A (en) * | 2010-09-29 | 2011-01-19 | 上海晶澳太阳能科技有限公司 | Novel solar cell and solar photovoltaic module composed thereof |
| CN202855747U (en) * | 2012-08-08 | 2013-04-03 | 浙江丰球光伏科技股份有限公司 | High-efficient polycrystalline cell sheet |
| CN203232878U (en) * | 2013-04-27 | 2013-10-09 | 中利腾晖光伏科技有限公司 | Solar cell front electrode structure |
| CN103426942A (en) * | 2013-08-29 | 2013-12-04 | 中利腾晖光伏科技有限公司 | Grid line structure of crystalline silicon cell |
| CN203398122U (en) * | 2013-08-29 | 2014-01-15 | 中利腾晖光伏科技有限公司 | Grid line structure of crystalline silicon cell |
| CN204196425U (en) * | 2014-11-07 | 2015-03-11 | 乐山新天源太阳能科技有限公司 | For the half tone of printing solar cell front electrode |
| CN104638032A (en) * | 2015-01-22 | 2015-05-20 | 中电电气（南京）光伏有限公司 | Positive electrode grid line of solar cell, solar cell and manufacturing method of solar cell |
| CN204659172U (en) * | 2015-05-20 | 2015-09-23 | 江苏盛矽电子科技有限公司 | There is the battery screen printing plate of main grid engraved structure |
| CN205767990U (en) * | 2016-06-28 | 2016-12-07 | 苏州阿特斯阳光电力科技有限公司 | A kind of front electrode of solar battery half tone |
| CN205881916U (en) * | 2016-07-21 | 2017-01-11 | 内蒙古日月太阳能科技有限责任公司 | Two -sided electricity generation solar battery of five main grid N types |
| CN206589444U (en) * | 2017-02-24 | 2017-10-27 | 苏州阿特斯阳光电力科技有限公司 | A kind of solar battery sheet gradient prints half tone |
| CN109572170A (en) * | 2017-09-29 | 2019-04-05 | 江苏天源太阳能发电有限公司 | A kind of solar battery substep printing technology halftone |
| CN207353262U (en) * | 2017-10-27 | 2018-05-11 | 无锡尚德太阳能电力有限公司 | Crystal silicon solar batteries front electrode graphic structure |
| CN108183139A (en) * | 2017-12-20 | 2018-06-19 | 横店集团东磁股份有限公司 | Solar battery sheet |
| CN208256683U (en) * | 2018-06-11 | 2018-12-18 | 泰州隆基乐叶光伏科技有限公司 | A kind of electrode structure at right side and solar battery of more main grid batteries |
| CN208352302U (en) * | 2018-06-25 | 2019-01-08 | 浙江晶科能源有限公司 | A kind of solar energy laminated batteries and solar energy stacked wafer moudle |
| CN109037363A (en) * | 2018-07-24 | 2018-12-18 | 浙江爱旭太阳能科技有限公司 | The positive electrode of crystal silicon solar batteries with anti-breaking grid function |
| CN208978434U (en) * | 2018-07-24 | 2019-06-14 | 浙江爱旭太阳能科技有限公司 | For the molding crystal silicon solar batteries halftone of positive electrode hollow out |
| CN109244156A (en) * | 2018-09-13 | 2019-01-18 | 北京太阳能电力研究院有限公司 | More main grid solar battery positive electrode patterns |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111916514A (en) * | 2020-07-28 | 2020-11-10 | 江苏辉伦太阳能科技有限公司 | Novel seamless photovoltaic module and preparation method thereof |
| CN112071922A (en) * | 2020-09-09 | 2020-12-11 | 西安宏星电子浆料科技股份有限公司 | Screen printing method for solar front silver grid line |
| CN113284956A (en) * | 2021-04-08 | 2021-08-20 | 李铁 | Improved crystalline silicon solar cell printing process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111114108A (en) | Solar cell positive electrode screen printing plate | |
| JP5820278B2 (en) | Solar cell and method for manufacturing solar cell | |
| EP2506314A1 (en) | Manufacturing method of front electrode of solar cell | |
| DE10237515A1 (en) | Stack-shaped photoelectric converter | |
| JP4255248B2 (en) | Solar cell and method for manufacturing the same | |
| CN211808360U (en) | Solar cell positive electrode screen printing plate | |
| JP2009290105A (en) | Solar battery, method of manufacturing solar battery, and solar battery module | |
| DE112011105125T5 (en) | Solar cell and method of making same, and solar cell module | |
| CN212365978U (en) | Solar cell electrode and solar cell | |
| JP2005150540A (en) | Screen for forming light receiving face electrode, method for manufacturing solar battery cell using same, and solar battery cell manufactured by same method | |
| JP2013131698A (en) | Solar cell with wiring sheet, solar cell module, and manufacturing method of solar cell | |
| CN113690329B (en) | Battery piece, photovoltaic module and welding frock | |
| JPWO2013179500A1 (en) | Solar cell manufacturing method, solar cell module manufacturing method, and solar cell module | |
| CN214774687U (en) | Improved screen printing plate structure | |
| CN220829965U (en) | Solar cell, photovoltaic module and printing screen | |
| CN111640818B (en) | Distribution and manufacturing method of solar cell conductive electrode wires | |
| CN216145648U (en) | Continuous grid of horizontal bipolar battery | |
| CN213845286U (en) | Heterojunction solar cell | |
| CN211031626U (en) | Improve half tone of battery piece printing E L broken bars virtual seal | |
| CN219959010U (en) | Gradual change half tone structure of PERC battery | |
| CN107275246A (en) | Solar cell pair grid shading rate correction factor and the assay method of secondary grid shading rate and the evaluation method of cell piece printing quality | |
| CN110993726A (en) | Printing process of solar cell | |
| CN219303675U (en) | Novel battery piece positive electrode printing pattern | |
| CN216354236U (en) | SE battery piece and photovoltaic module | |
| CN215869418U (en) | Back contact type front solderless strip double-sided assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |