CN111129208A - Method for gluing conductive adhesive of laminated solar cell - Google Patents
Method for gluing conductive adhesive of laminated solar cell Download PDFInfo
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- CN111129208A CN111129208A CN201911046659.XA CN201911046659A CN111129208A CN 111129208 A CN111129208 A CN 111129208A CN 201911046659 A CN201911046659 A CN 201911046659A CN 111129208 A CN111129208 A CN 111129208A
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- conductive adhesive
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- solar cell
- screen printing
- gluing
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- 230000001070 adhesive effect Effects 0.000 title claims abstract description 108
- 239000000853 adhesive Substances 0.000 title claims abstract description 107
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000004026 adhesive bonding Methods 0.000 title claims abstract description 34
- 238000004513 sizing Methods 0.000 claims abstract description 58
- 238000007650 screen-printing Methods 0.000 claims abstract description 33
- 238000007639 printing Methods 0.000 claims abstract description 20
- 238000002347 injection Methods 0.000 claims abstract description 8
- 239000007924 injection Substances 0.000 claims abstract description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 3
- 239000003292 glue Substances 0.000 claims description 31
- 239000012634 fragment Substances 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 8
- 238000007645 offset printing Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 238000003698 laser cutting Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 2
- 239000012528 membrane Substances 0.000 claims 1
- 239000011347 resin Substances 0.000 claims 1
- 229920005989 resin Polymers 0.000 claims 1
- 230000003287 optical effect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 9
- 230000003139 buffering effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010935 stainless steel 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
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
- H01L31/1876—Particular processes or apparatus for batch treatment of the devices
- H01L31/188—Apparatus specially adapted for automatic interconnection of solar cells in a module
-
- 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
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- Engineering & Computer Science (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention provides a gluing method of a conductive adhesive of a laminated solar cell, which adopts a twice gluing mode of the conductive adhesive, wherein the first gluing is to print the conductive adhesive onto a cell slice splitting electrode through screen printing, after the conductive adhesive is dried, the second gluing is to overprint the conductive adhesive onto the conductive adhesive which is glued for the first time by screen printing, wherein a screen printing plate used for the first gluing and the second gluing is a stainless steel wire screen printing plate, and the printing positioning adopts the optical positioning of a main grid line or a fine grid line on the front surface of the cell slice splitting; according to another optimization of the method, the first sizing adopts a screen printing mode, the conductive adhesive is printed on the cell slice electrodes, and the second sizing adopts a high-frequency injection valve to size the conductive adhesive on the first sized conductive adhesive. The invention has the beneficial effects that: the method breaks through the limitation of the conventional printing of the conductive adhesive of the laminated solar cell, improves the adhesive height of the conductive adhesive after the adhesive is applied, improves the adhesive property of the conductive adhesive of the laminated solar cell and simultaneously improves the reliability of the laminated photovoltaic module.
Description
Technical Field
The invention relates to the technical field of photovoltaics, in particular to a method for gluing a conductive adhesive of a laminated solar cell.
Background
The laminated solar cell module is an important development direction of the current high-efficiency solar module technology, the laminated solar cell module adopts laser to cut the solar cell into a plurality of pieces and then uses conductive adhesive to connect, and the laminated solar cell module with the eliminated cell piece interval has the highest conversion efficiency in the industry at present.
Specifically, the edge of the adjacent battery piece is overlapped by the tile-stacked assembly, wherein the edge of the front side of one battery piece is arranged at the edge of the back side of the adjacent battery piece, and the front side electrode and the back side electrode of the other battery piece are bonded by conductive adhesive to form electrical and mechanical connection.
Specifically, the gluing mode of the conductive adhesive of the electrode of the laminated tile solar cell is mainly a glue dispensing mode and a printing mode, compared with the glue dispensing gluing mode, the glue gluing mode of the printed conductive adhesive has the advantages of high gluing speed, conductive adhesive quantity saving, difficulty in glue overflow after the width of the conductive adhesive is smaller and the like, and is a better solution for gluing the conductive adhesive of the laminated tile solar cell.
In the current photovoltaic industry, as shown in fig. 1, a conventional laminated solar cell bonds a front electrode of a cell and a back electrode of an adjacent cell through conductive adhesive, so that electrical connection of the laminated cell is completed, the conductive adhesive is a key process for realizing the electrical connection, the conductive adhesive is used as a flexible material and also plays a role in buffering thermal stress and tensile force in the actual operation process of a laminated assembly, and the reliability of the laminated assembly can be greatly improved by designing a good conductive adhesive coating process.
In addition, the height of the conductive paste is one of the important factors affecting the reliability of the laminated assembly. The influence of higher conductive adhesive height on the assembly power is very weak, but the influence on the assembly reliability is very important, the adhesive height is higher, the better the stress buffering between the battery piece and the battery piece is, simultaneously, the tolerance of the laminated cell string on the bending deformation degree is higher, the power attenuation of the laminated assembly with the higher conductive adhesive height is lower than that of the laminated assembly with the lower conductive adhesive height in a mechanical load test and a thermal cycle test.
However, the glue applying method for printing the conductive glue is limited by the thickness of the screen and the film of the screen printing plate, so that the glue height of the conductive glue cannot be further improved, and the reliability of the assembly is affected.
In view of the above, there is a need for an improved method for applying conductive paste to a solar cell.
Disclosure of Invention
In order to solve the problems, the invention discloses a method for gluing a conductive adhesive of a laminated tile solar cell, which realizes the effects of high gluing speed, conductive adhesive quantity saving and conductive adhesive higher than that of a conventional gluing mode after gluing, effectively improves the reliability of a laminated tile assembly and reduces the production and processing cost.
In order to achieve the above purpose, the invention provides the following technical scheme:
a method for gluing a laminated solar cell conductive adhesive comprises the following steps:
A) battery piece material loading: loading the battery piece;
B) laser slitting of the battery piece: the method comprises the steps of determining the accurate position of a cell piece by optically positioning a main grid line or a fine grid line of the cell piece, cutting the cell piece into 6 cell piece fragments by adopting a laser and piece breaking-off mechanism, wherein a laser cutting area is arranged on the back of the cell piece to prevent a PN junction on the front side from being damaged;
as a further improvement of the invention, the areas of the battery piece fragments can be unequal, but the difference can not be more than or equal to 5 percent;
preferably, the laser wavelength is 1024nm, and the power is 50-300W;
C) twice conductive adhesive sizing: first gluing, namely, gluing for the first time through a screen printing plate, and printing conductive adhesive on the front electrodes of the battery piece segments; and (4) applying glue for the second time, drying the conductive glue, and overprinting the conductive glue onto the conductive glue printed for the first time through a silk screen printing plate.
As a further development of the invention, step C) can be replaced by: and (3) first gluing, namely, first gluing through a screen printing plate, printing conductive adhesive on the back electrodes of the battery piece sub-pieces, second gluing, drying the conductive adhesive, and overprinting the conductive adhesive onto the first printed conductive adhesive through the screen printing plate.
Preferably, the silk-screen printing plate used for the first sizing and the second sizing is a conventional stainless steel silk-screen printing plate, and the front main grid lines or fine grid lines of the cell fragments are optically positioned between the silk-screen printing plate and the cell fragments.
Preferably, the mesh number of the silk screen is 150-200, the diameter of the silk screen is 30-45 um, the thickness of the silk screen is 18-100 um, and the thickness of the film is 10-30 um.
Preferably, the thickness of the screen printing plate used for the second sizing is larger than that of the screen printing plate used for the first sizing.
Preferably, the printing width of the first sizing and the second sizing conductive adhesive is 200-600 mu m, and meanwhile, the printing width of the conductive adhesive of the silk-screen printing plate of the first sizing is smaller than that of the conductive offset printing of the silk-screen printing plate of the second sizing.
Preferably, the first and second sized conductive paste patterns are straight grid or segmented.
Preferably, the drying method of the conductive adhesive after the first sizing is a heating plate heating method or an infrared lamp tube heating method, the battery piece after the first sizing is placed in a heating area in a slicing mode, the heating temperature is 120-190 ℃, and the heating time is 5 s-1 min.
As a further improvement of the process, step C) can be replaced by: sizing for the first time: and (3) applying glue for the first time through a silk screen printing plate, printing the conductive glue on the front electrodes of the cell slices, performing glue application for the second time without a conductive glue drying step, and spraying the conductive glue onto the conductive glue printed for the first time by adopting a high-frequency spraying valve.
Preferably, the second glue applying mode is that the high-frequency injection valve injects the conductive adhesive, and when the injection valve injects the conductive adhesive, the distance between the nozzle and the first-time printing conductive adhesive is 100-500 um, and the diameter of the needle head of the nozzle is 0.1-0.3 mm.
Preferably, the second glue applying mode is that the batch of injection valves inject the conductive glue, and the injected conductive glue is in a dot shape and forms a straight line.
Compared with the prior art, the invention has the beneficial effects that: compared with the conventional conductive adhesive silk-screen printing, the method has the advantages that the conductive adhesive height is increased by twice conductive adhesive gluing, the stress buffering between the split sheets of the laminated solar cell is optimized, and the reliability of the laminated solar cell module is improved.
Drawings
Fig. 1 is a schematic view of a laminated cell plate in series.
Fig. 2 is a schematic diagram of grid lines on the front surface of a laminated cell sheet according to the present invention.
Fig. 3 is a schematic diagram of the printing of the conductive adhesive of the laminated cell piece of the invention.
FIG. 4 is a schematic representation of a straight grid and two segments in a shingled conductive paste printed pattern according to the present invention.
FIG. 5 is a schematic view of the morphology of the conductive adhesive after the first sizing in the present invention.
FIG. 6 is a schematic view of the morphology of the conductive adhesive after the second sizing in the present invention.
Fig. 7 is a schematic diagram of a printed valve-applied conductive paste pattern.
Fig. 8 is another schematic view of a printed and valve-applied conductive adhesive pattern.
List of reference numerals:
1-front electrode, 2-back electrode, 3-conductive adhesive, 10-cell piece separation, 100-laminated cell string and 200-solar cell piece.
Detailed Description
The present application will now be described in detail with reference to specific embodiments thereof as illustrated in the accompanying drawings. These embodiments are not intended to limit the present application, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present application.
In the various drawings of the present application, some dimensions of structures or portions may be exaggerated relative to other structures or portions for convenience of illustration, and thus, are used only to illustrate the basic structure of the subject matter of the present application.
Example 1: as shown in fig. 2, in the method for applying the conductive adhesive to the laminated solar cell, a solar cell sheet 200 is loaded to a laser cutting mechanism, a front electrode of the solar cell sheet faces downward, the front main grid line of the solar cell sheet is optically positioned to obtain an accurate position of the solar cell sheet, positioning information of the solar cell sheet is transmitted to a laser scribing mechanism, and the laser scribing mechanism divides the solar cell sheet 200 into 6 solar cell sheet pieces 10. And (3) gluing for the first time, printing the conductive adhesive 3 on the back electrode 2 of the battery piece by adopting a silk-screen printing plate, wherein the printing width of the conductive adhesive is 300um, the glue height is 80um, and the conductive adhesive is dried in an infrared lamp tube heating mode, wherein the heating temperature is 185 ℃, and the heating time is 20 s. Carrying out optical positioning on the front main grid line of the battery piece fragment 10 again to obtain the accurate position of the battery piece fragment 10, gluing for the second time, overprinting the conductive adhesive onto the conductive adhesive 3 glued for the first time by adopting a silk screen printing plate, wherein the width of the conductive offset printing brush is 350um, the adhesive height after printing is 120um, arranging the battery pieces of a plurality in the mode that the edges of the back surfaces of adjacent battery pieces are arranged at the edges of the battery pieces, and forming electrical performance and mechanical performance connection after bonding through the conductive adhesive. After the bonding and the curing of the conductive adhesive are completed, the height of the conductive adhesive between the battery pieces is about 70-80 um.
As shown in fig. 5, for the first time of applying glue, the conductive glue 3 is printed on the electrodes 1 of the cell slice segment 10.
As shown in fig. 6, the conductive adhesive is printed on the conductive adhesive 3 of the cell sheet segment 10 by applying the adhesive for the second time.
Preferably, the screen printing screen used for the first sizing has the mesh number of 165 meshes, the silk diameter of 45um, the yarn thickness of 95um and the film thickness of 30 um;
preferably, the screen printing screen used for the second sizing has the mesh number of 165 meshes, the silk diameter of 45um, the yarn thickness of 95um and the film thickness of 30 um;
preferably, the pattern of the printed conductive adhesive used for the first sizing is a straight grid type, and the width of the conductive adhesive is 300 um;
preferably, the pattern of the printed conductive adhesive used for the second sizing is a straight grid pattern, and the width of the conductive adhesive is 350 um;
preferably, the conductive adhesive is a silicone or acrylic conductive adhesive.
Example 2: as shown in fig. 2, in the method for applying the conductive adhesive to the laminated solar cell, a solar cell sheet 200 is loaded to a laser cutting mechanism, a front electrode of the solar cell sheet faces downward, the front main grid line of the solar cell sheet is optically positioned to obtain an accurate position of the solar cell sheet, positioning information of the solar cell sheet is transmitted to a laser scribing mechanism, and the laser scribing mechanism divides the solar cell sheet 200 into 6 solar cell sheet pieces 10. And (3) gluing for the first time, printing the conductive adhesive 3 on the back electrode 2 of the battery piece by adopting a silk-screen printing plate, wherein the printing width of the conductive adhesive is 300um, and the glue height is 80 um. And performing optical positioning on the front main grid line of the battery piece sub-pieces 10 to obtain the accurate positions of the battery pieces, gluing for the second time, spraying conductive adhesive to the conductive adhesive 3 glued for the first time by adopting a high-frequency injection valve, wherein the shape of a single conductive adhesive is dotted and forms a straight line, and forming electrical and mechanical property connection after the edges of a plurality of battery pieces are bonded by the conductive adhesive in a manner that the edges of one battery piece are arranged at the edges of the back surfaces of adjacent battery pieces. After the bonding and the curing of the conductive adhesive are completed, the height of the conductive adhesive between the battery pieces is about 100-150 um.
As shown in fig. 7, the first sizing is printing sizing, the sizing pattern is straight grid type (a in fig. 7), the second sizing is spray valve sizing, the sizing pattern (b in fig. 7), and the overall morphology of the conductive adhesive after the second sizing (c in fig. 7).
As another improvement, as shown in fig. 8, the first sizing is printing sizing, the sizing pattern is segmented (a in fig. 8), the second sizing is valve sizing, the sizing pattern (B in fig. 8), and the overall morphology of the conductive paste after the second sizing (C in fig. 8).
Compared with the conventional imbricated solar cell conductive offset printing mode, the conductive offset printing method has the advantages that the glue height after the glue is applied by the conductive glue is increased due to the adoption of the twice glue applying mode, the yield of the conductive offset printing and the resistance of thermal stress between the imbricated cells are improved, and the reliability of the imbricated assembly is further improved.
It should be understood that although the description is made in terms of embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art will recognize that the embodiments described herein may be combined as appropriate to form other embodiments, as will be appreciated by those skilled in the art.
The above list of details is only for the concrete description of the feasible embodiments of the present application, they are not intended to limit the scope of the present application, and all equivalent embodiments or modifications that do not depart from the technical spirit of the present application are intended to be included within the scope of the present application.
Claims (10)
1. A method for gluing a laminated solar cell conductive adhesive is characterized by comprising the following specific steps:
A) battery piece material loading: loading the battery piece;
B) laser slitting of the battery piece: optically positioning a main grid line or a fine grid line of a cell to determine the accurate position of the cell, and then cutting the cell into 6 cell fragments by adopting a laser and fragment breaking mechanism, wherein a laser cutting area is arranged on the back of the cell;
C) twice conductive adhesive sizing: first gluing, namely printing conductive adhesive on the cell slice electrodes through a screen printing plate, and drying; and (4) gluing for the second time, namely, overprinting the conductive adhesive onto the conductive adhesive glued for the first time through a screen printing plate.
2. The method for sizing the conductive adhesive of the laminated solar cell according to claim 1, wherein the method comprises the following steps: the area difference of each battery piece in the step B) is less than 5%.
3. The method for sizing the conductive adhesive of the laminated solar cell according to claim 1, wherein the method comprises the following steps: the laser wavelength in the step B) is 1024nm, and the power is 50-300W.
4. The method for sizing the conductive adhesive of the laminated solar cell according to claim 1, wherein the method comprises the following steps: the silk-screen printing plate in the step C) is a stainless steel wire silk-screen printing plate, the front main grid lines or the fine grid lines of the battery piece sub-pieces are used for positioning between the silk-screen printing plate and the battery piece sub-pieces, the number of the silk screens of the silk-screen printing plate is 150-200, the silk diameter is 30-45 um, the thickness of the gauze is 18-100 um, and the thickness of the membrane is 10-30 um.
5. The method for sizing the conductive adhesive of the laminated solar cell according to claim 1, wherein the method comprises the following steps: in the step C), the thickness of the screen printing plate used for the second sizing is larger than that of the screen printing plate used for the first sizing.
6. The method for sizing the conductive adhesive of the laminated solar cell according to claim 1, wherein the method comprises the following steps: in the step C), the printing width of the conductive adhesive for the first sizing and the second sizing is 200-600 mu m, and the width of the conductive offset printing brush of the silk-screen printing plate in the first sizing is smaller than that in the second sizing.
7. The method for sizing the conductive adhesive of the laminated solar cell according to claim 1, wherein the method comprises the following steps: in the step C), the conductive adhesive patterns of the first sizing and the second sizing are straight grids or sectional type.
8. The method for sizing the conductive adhesive of the laminated solar cell according to claim 1, wherein the method comprises the following steps: and in the step C), a screen printer is adopted for primary sizing, conductive adhesive is printed on the cell slice electrodes, and a high-frequency injection valve is adopted for secondary sizing to glue the conductive adhesive which is sized for the first time.
9. The method for sizing the conductive adhesive of the laminated solar cell according to claim 8, wherein: the high-frequency injection valve of glueing for the second time, the interval is 100 ~ 500um between the conducting resin of nozzle and glueing for the first time, and nozzle needle diameter is 0.1 ~ 0.3 mm.
10. The method for sizing the conductive adhesive of the laminated solar cell according to claim 8, wherein: and after the first sizing, the conductive adhesive is not dried, the middle-high frequency injection valve in the second sizing does not contact the conductive adhesive subjected to the first sizing, and the conductive adhesive is injected onto the conductive adhesive subjected to the first sizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911046659.XA CN111129208A (en) | 2019-10-30 | 2019-10-30 | Method for gluing conductive adhesive of laminated solar cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911046659.XA CN111129208A (en) | 2019-10-30 | 2019-10-30 | Method for gluing conductive adhesive of laminated solar cell |
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| CN111129208A true CN111129208A (en) | 2020-05-08 |
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| CN201911046659.XA Pending CN111129208A (en) | 2019-10-30 | 2019-10-30 | Method for gluing conductive adhesive of laminated solar cell |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113921654A (en) * | 2021-09-26 | 2022-01-11 | 中国华能集团清洁能源技术研究院有限公司 | Manufacturing method of laminated photovoltaic module |
| CN114765227A (en) * | 2020-12-30 | 2022-07-19 | 苏州阿特斯阳光电力科技有限公司 | Preparation method of photovoltaic module |
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| CN108538948A (en) * | 2018-06-14 | 2018-09-14 | 泰州隆基乐叶光伏科技有限公司 | Solar cell grid line structure, solar battery sheet and solar energy stacked wafer moudle |
| CN208093575U (en) * | 2018-04-10 | 2018-11-13 | 点馨（上海）实业有限公司 | Utilize the solar battery sheet, solar panel and photovoltaic devices of conductive glue connection |
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2019
- 2019-10-30 CN CN201911046659.XA patent/CN111129208A/en active Pending
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| CN101607243A (en) * | 2008-06-19 | 2009-12-23 | 天津莱尔德电子材料有限公司 | The process of a kind of multilayer glue dispensing in the EMI process of producing product |
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