CN202716538U - Printing solar cell electrode screen printing plate - Google Patents
Printing solar cell electrode screen printing plate Download PDFInfo
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- CN202716538U CN202716538U CN 201220405824 CN201220405824U CN202716538U CN 202716538 U CN202716538 U CN 202716538U CN 201220405824 CN201220405824 CN 201220405824 CN 201220405824 U CN201220405824 U CN 201220405824U CN 202716538 U CN202716538 U CN 202716538U
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- half tone
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Abstract
The utility model discloses a printing solar cell electrode screen printing plate which comprises that a plurality of converge electrode blanking areas are arranged on the surface of a first printing screen printing plate to for a converge electrode of a solar cell, and a plurality of finger electrode blanking areas are arranged on the surface of a second printing second printing plate to form a finger electrode of the solar cell. Overprint at different positions can be finished through two screen printing plates. Left-right dislocation of upper layer slurry and lower layer slurry caused by inaccurate counterpoint of the screen printing plates is avoided, line expansion is prevented from being generated, more than two converge electrodes and a plurality of finger electrodes can respectively collocate with slurry of different grain diameter, viscosity, penetrability, electrical conductivity and the like to print under the situation where line width and the thickness are different , and conversion rate of electricity and solar energy can be well achieved.
Description
Technical field
The utility model relates to a kind of half tone of printing solar cell electrode, and espespecially a kind of secondary printing is produced the printing screen plate of electrode of solar battery structure.
Background technology
In recent years, because the problem of environmental pollution is more and more serious, a lot of countries begin to develop the problem that new green energy resource reduces environment pollution.Solar cell can transfer the luminous energy of the sun to electric energy, and this conversion can not produce the material of any contaminative, so the related application of solar cell comes into one's own gradually.
Solar cell is to utilize semi-conductive photoelectric effect directly to absorb sunshine to generate electricity, its electricity generating principle is when solar light irradiation is on solar cell, solar cell can absorb solar energy, and make the P-type semiconductor of solar cell and N-type semiconductor produce respectively electric hole and electronics, and make electronics separate to form voltage drop with electric hole, and then generation current.
See also Fig. 1; the electrode structure of solar cell; usually can utilize the mode of screen painting on semiconductor substrate 10, to form annular electrode (redundant) 11, many bus electrodes (bus bar) 12 and a plurality of finger electrode 13 (finger); wherein bus electrode 12 is mutually vertical with finger electrode 13; and bus electrode 12 is generally two or three electrodes that live width is wider, and finger electrode 13 is generally tens of the electrodes that live width is thinner for quantity is more.
Again, finger electrode 13 is electronics or the electric holes that produce because of photoelectric effect in order to collect, and being sent to bus electrode 12, bus electrode 12 then mainly is sent to outside electric storage device or applications device in order to electronics or the electric hole that finger electrode 13 is transmitted.Generally speaking, the width of bus electrode 12 is greater than more than the finger electrode 13 width decades of times.
Again, many finger electrode 13 is that width is more thin better and slurry height must be more high better on the electrode structure of solar cell, in order to obtain higher solar energy conversion ratio, and 12 needs of at least two bus electrode have certain slurry in order to transmit electronics or electric hole to outside electric storage device, not need very high slurry thickness.
But, existing screen printing technology is disposable printing, for the slurry height in the blanking zone that makes these many finger electrodes 13 can be higher, when printing at the same time finger electrode 13 with bus electrode 12, these many finger electrodes 13 and the slurry thickness in the blanking zone of bus electrode 12 all can be uprised simultaneously.So, the slurry thickness that forms bus electrode 12 is too high, so that the unnecessary consumption of slurry is too much, causes material cost too high.
In addition, existing with a kind of secondary screen printing technology, by first impression finger electrode 13 bottoms, again second impression finger electrode 13 tops and bus electrode 12, but, because finger electrode 13 width are more thin better, this kind time half tone printing technology can produce the offset error of two half tone loci and graph position when the secondary screen painting, can cause in the second time that contraposition is consuming time during double exposure, the problems such as printing skew, lines chap, slurry out-of-flatness and slurry waste.
Summary of the invention
In view of this, for solving the aforesaid drawbacks, the purpose of this utility model is at the half tone that a kind of printing solar cell electrode is provided, make bus electrode, annular electrode and finger electrode obtain respectively preferably electrode width, thickness and reach higher uniformity and precision, can reach better electrically and the solar energy conversion ratio, and the more slurries of saving and half tone life-span longlyer can be reduced cost.
In order to achieve the above object, the half tone of a kind of printing solar cell electrode of the utility model, it comprises: one first printing screen plate surface is provided with many bus electrode feeding zones, makes the material that contains conductive material be made of the bus electrode of solar cell these many bus electrode feeding zones by printing on a substrate; And one second the printing screen plate surface be provided with many finger electrode feeding zones, make the material that contains conductive material on aforesaid base plate, be consisted of the finger electrode of solar cell by these many finger electrode feeding zones by printing.
Wherein, this first printing screen plate comprises an annular electrode feeding zone, in order to form the annular electrode of solar cell.
Wherein, the material composition that this first printing screen plate printing forms these many bus electrodes and the second printing screen plate printing form the material composition of these many finger electrodes can be identical or material composition is different, the slurry of the different qualities such as particle diameter, viscosity, penetrability and electric conductivity of can arranging in pairs or groups respectively prints, and can reach better electrically and the solar energy conversion ratio.
Wherein, this first printing screen plate is on the grenadine half tone, and its electrode feeding zone figure is formed by the coating of high-molecular photosensitive material, and this first printing screen plate is that the grenadine half tone is plastic wire or stainless steel cloth.
Wherein, this first printing screen plate and this second printing screen plate are the metal forming half tone, and its electrode feeding zone figure is formed by metal forming.
The utility model has the advantage of, with the secondary printing half tone successively in the diverse location chromatography, successively higher in the precision of same position double exposure than existing secondary half tone, contraposition on many finger electrodes needn't take long to when the second impression, can save time, do not have the half tone contraposition yet and forbidden to cause about the levels slurry and misplace, and produce the situation that expands line.The thickness of the existing secondary printing finger electrode of aspect ratio of a finger electrode of metal forming screen painting of the present utility model is also high, and can not have dislocation and cause slurry to subside or irregular situation, and the abundant straight slurry of not wasting of slurry, escapable cost.And in the situation that live width and the thickness of the bus electrode more than two and many finger electrodes all has a long way to go, the slurry of the different qualities such as particle diameter, viscosity, penetrability and electric conductivity of can arranging in pairs or groups respectively prints, and can reach better electrically and the solar energy conversion ratio.
Description of drawings
Fig. 1 is the schematic diagram of electrode of solar battery.
Fig. 2 is the schematic diagram one of the utility model half tone.
Fig. 3 is the schematic diagram one of the utility model electrode of solar battery.
Fig. 4 is the schematic diagram two of the utility model half tone.
Fig. 5 is the schematic diagram two of the utility model electrode of solar battery.
Description of reference numerals:
(having now)
The 10-semiconductor substrate; The 11-annular electrode; The 12-bus electrode; The 13-finger electrode;
(the utility model);
100-the first printing screen plate; The 110-screen frame; The 120-grenadine; The 130-stainless steel cloth; The 140-print film; 151-bus electrode feeding zone; 152-annular electrode feeding zone; The 200-substrate; The 210-bus electrode; The 220-annular electrode; The 230-finger electrode; 300-the second printing screen plate; The 310-screen frame; The 320-grenadine; The 330-wire netting; The 340-metal forming; 350-finger electrode feeding zone.
The specific embodiment
Hereby enumerate description of drawings and the specific embodiment of the half tone of the utility model printing solar cell electrode, to assist the patent examination committee member technical characterictic of the present utility model and content are done understanding, please be referring to following statement:
See also Fig. 2 and Fig. 3, be the schematic diagram one of the utility model printing screen plate and electrode of solar battery.The half tone of a kind of printing solar cell electrode of the utility model, printing produces electrode of solar battery on a substrate 200, first be provided with many bus electrode feeding zones 151 by one first printing screen plate, 100 surfaces, make the material that contains conductive material on this substrate 200, be consisted of the bus electrode 210 of solar cell by these many bus electrode feeding zones 151 by printing; The first printing screen plate 100 surfaces further can comprise an annular electrode feeding zone 152, and form an annular electrode 220 by these the first printing screen plate 100 printings, and this annular electrode 220 is non-essential electrode, can arrange on demand or not arrange.
Wherein, the grenadine half tone that this first printing screen plate 100 is common, its print film is formed the figure of blanking by the coating of high-molecular photosensitive material, and the grenadine of this first printing screen plate 100 is plastic wire or stainless steel cloth.For example, this first printing screen plate 100 comprises a screen frame 110, one grenadine 120 is bonded on the screen frame 110, this grenadine 120 can be plastic wire or stainless steel cloth, or be located at the opening part (as shown in Figure 2) of this grenadine 120 (plastic wire) by a stainless steel cloth 130, then form a print film 140 in this grenadine 120 (without stainless steel wire 130 time) or stainless steel cloth 130 by the coating of high-molecular photosensitive material, with bus electrode feeding zone 151 figures and annular electrode feeding zone 152 figures of developing technique formation more than two, slurry forms bus electrode 210 and annular electrode 220 by the figure on the print film 140 on the substrate 200 of aforementioned solar cell after scraping, and drying is solidified.
Please consult again Fig. 4 and Fig. 5, be the schematic diagram two of the utility model printing screen plate and electrode of solar battery.Through behind the aforementioned processing procedure, be provided with many finger electrode feeding zones 350 by one second printing screen plate, 300 surfaces again, make the material that contains conductive material on aforesaid base plate 200, be consisted of the finger electrode 230 of solar cell by these many finger electrode feeding zones 350 by printing, these many finger electrodes 230 are arranged at intervals at the both sides of these many bus electrodes 210, and these many finger electrodes 230 are electrically connected with bus electrode 210 respectively.
Wherein, this second printing screen plate 300 is the metal forming half tone, and its print film is formed the figure of finger electrode feeding zone 350 by a metal forming 340.For example, this second printing screen plate 300 comprises that a screen frame 310, a grenadine 320 are bonded on the screen frame, this grenadine 320 can be plastic wire, be located at again the opening part of these grenadine 320 nets by a wire netting 330 (stainless steel cloth or metal plain net), then on this wire netting 330, form many finger electrode feeding zone 350 figures as shown in Figure 4 by this metal forming 340), slurry forms finger electrode 230 by the figure on the metal forming 340 on the substrate 200 of aforementioned solar cell after scraping, and drying is solidified.
Wherein, aforementionedly forming print film (electrode feeding zone figure) by light-sensitive surface or metal forming, is that existing market and patent have disclosed relevant structure technology, so the composition structure technology of relevant print film is known technology, and non-this patent emphasis is not added to give unnecessary details at this.And, in the enforcement, can be all the metal forming half tone with reaching this second printing screen plate 300 on these the first printing screen plate 100 textural associations, formed the figure of electrode feeding zone by metal forming.
Again, the material composition that 100 printings of this first printing screen plate form these many bus electrodes 210 and the material composition of the second printing screen plate 300 these many finger electrodes 230 of printing formation can be identical or material composition is different, in the situation that the bus electrode 210 more than two and many finger electrode 230 live widths and thickness all have a long way to go, the slurry of the different qualities such as particle diameter, viscosity, penetrability and electric conductivity of can arranging in pairs or groups respectively prints, and can reach better electrically and the solar energy conversion ratio.
First printing screen plate 100 (common half tone) of the utility model by the first impression prints out the bus electrode 210 more than two, the not high but uniformity of thickness, quite be beneficial to the applying of follow-up conducting strip (not shown), and slurry can too thickly not cause waste; And second printing screen plate 300 (metal forming half tone) of the second impression prints out that lines are very thin, smooth straight, the finger electrode that thickness is very high of lines, and lines carefully and directly can increase cell piece extinction area, the abundant smooth also more effective derived current of slurry of saving of slurry is to promote the solar energy conversion ratio.And the utility model secondary printing is the separate printing of bus electrode 210 with finger electrode 230, do not have on the half tone the more not situation of anti-printing of bus electrode and finger electrode figure join domain, the longer service life of relative half tone.
Again, the utility model with the secondary half tone successively in the diverse location chromatography, successively higher in the precision of same position double exposure than existing secondary half tone, contraposition on many finger electrodes needn't take long to when the second impression, can save time, do not have the half tone contraposition yet and forbidden to cause about the levels slurry and misplace, and produce the situation that expands line.And the thickness of the existing secondary printing finger electrode of aspect ratio by a finger electrode of metal forming screen painting is also high, can not have dislocation and cause slurry to subside or irregular situation, and the abundant straight slurry of not wasting of slurry, escapable cost.
The utility model discloses with preferred embodiment hereinbefore, it should be understood that this embodiment only is used for describing the utility model yet have the knack of the technology person, and should not be read as restriction scope of the present utility model.It should be noted, such as with variation and the displacement of this embodiment equivalence, all should be made as and be covered by in the category of the present utility model.Therefore, protection domain of the present utility model when with hereinafter claim the person of being defined be as the criterion.
Claims (4)
1. the half tone of a printing solar cell electrode is characterized in that, it comprises:
One first printing screen plate, its surface are provided with many bus electrode feeding zones, make the material that contains conductive material be made of the bus electrode of solar cell these many bus electrode feeding zones by printing on a substrate; And
One second printing screen plate, its surface are provided with many finger electrode feeding zones, make the material that contains conductive material be made of the finger electrode of solar cell these many finger electrode feeding zones by printing on aforesaid base plate.
2. the half tone of printing solar cell electrode according to claim 1 is characterized in that, this first printing screen plate comprises an annular electrode feeding zone, in order to form the annular electrode of solar cell.
3. the half tone of printing solar cell electrode according to claim 1 is characterized in that, this first printing screen plate is the metal forming half tone, and its bus electrode feeding zone figure is formed by metal forming.
4. the half tone of printing solar cell electrode according to claim 1 is characterized in that, this second printing screen plate is the metal forming half tone, and its finger electrode feeding zone figure is formed by metal forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220405824 CN202716538U (en) | 2012-08-15 | 2012-08-15 | Printing solar cell electrode screen printing plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220405824 CN202716538U (en) | 2012-08-15 | 2012-08-15 | Printing solar cell electrode screen printing plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202716538U true CN202716538U (en) | 2013-02-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220405824 Expired - Fee Related CN202716538U (en) | 2012-08-15 | 2012-08-15 | Printing solar cell electrode screen printing plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202716538U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI556455B (en) * | 2014-03-04 | 2016-11-01 | 茂迪股份有限公司 | Solar cell, module comprising the same and method of manufacturing the same |
| CN108155249A (en) * | 2017-12-15 | 2018-06-12 | 南京日托光伏科技股份有限公司 | A kind of MWT front electrode of solar battery and preparation method thereof |
-
2012
- 2012-08-15 CN CN 201220405824 patent/CN202716538U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI556455B (en) * | 2014-03-04 | 2016-11-01 | 茂迪股份有限公司 | Solar cell, module comprising the same and method of manufacturing the same |
| CN108155249A (en) * | 2017-12-15 | 2018-06-12 | 南京日托光伏科技股份有限公司 | A kind of MWT front electrode of solar battery and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130206 Termination date: 20180815 |