CN117153918A - Packaging method for coplanar electrode flexible solar cell - Google Patents
Packaging method for coplanar electrode flexible solar cell Download PDFInfo
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- CN117153918A CN117153918A CN202311115126.9A CN202311115126A CN117153918A CN 117153918 A CN117153918 A CN 117153918A CN 202311115126 A CN202311115126 A CN 202311115126A CN 117153918 A CN117153918 A CN 117153918A
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- battery
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- packaging
- solar cell
- flexible solar
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- 238000004806 packaging method and process Methods 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000003292 glue Substances 0.000 claims abstract description 19
- 238000003466 welding Methods 0.000 claims abstract description 11
- 239000010408 film Substances 0.000 claims description 44
- 239000000853 adhesive Substances 0.000 claims description 21
- 230000001070 adhesive effect Effects 0.000 claims description 21
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 claims description 16
- 229910001218 Gallium arsenide Inorganic materials 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 16
- 239000010409 thin film Substances 0.000 claims description 12
- 238000001179 sorption measurement Methods 0.000 claims description 10
- 238000005530 etching Methods 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 5
- 229920002379 silicone rubber Polymers 0.000 claims description 5
- 239000004642 Polyimide Substances 0.000 claims description 4
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 claims description 4
- 229920001721 polyimide Polymers 0.000 claims description 4
- 229920000098 polyolefin Polymers 0.000 claims description 4
- MARUHZGHZWCEQU-UHFFFAOYSA-N 5-phenyl-2h-tetrazole Chemical compound C1=CC=CC=C1C1=NNN=N1 MARUHZGHZWCEQU-UHFFFAOYSA-N 0.000 claims description 2
- 229910021417 amorphous silicon Inorganic materials 0.000 claims description 2
- HVMJUDPAXRRVQO-UHFFFAOYSA-N copper indium Chemical compound [Cu].[In] HVMJUDPAXRRVQO-UHFFFAOYSA-N 0.000 claims description 2
- 239000006059 cover glass Substances 0.000 claims description 2
- YZZNJYQZJKSEER-UHFFFAOYSA-N gallium tin Chemical compound [Ga].[Sn] YZZNJYQZJKSEER-UHFFFAOYSA-N 0.000 claims description 2
- 239000004945 silicone rubber Substances 0.000 claims 1
- 210000004027 cell Anatomy 0.000 description 42
- 238000010586 diagram Methods 0.000 description 9
- 229910052684 Cerium Inorganic materials 0.000 description 3
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical group [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 2
- 230000003447 ipsilateral effect Effects 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 108091092878 Microsatellite Proteins 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000010329 laser etching Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012858 packaging process Methods 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- 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
- H01L31/048—Encapsulation of modules
-
- 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
- H01L31/02016—Circuit arrangements of general character for the devices
- H01L31/02019—Circuit arrangements of general character for the devices for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/02021—Circuit arrangements of general character for the devices 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
- H01L31/04—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
Abstract
The invention discloses a packaging method for a coplanar electrode flexible solar cell, which specifically comprises the following steps: step S1, a first back packaging piece is provided, and a plurality of grooves are formed in the surface of the first back packaging piece. And filling negative film glue in the groove, and filling the back of the battery piece facing the negative film glue into the groove. Step S2, electrically connecting a plurality of battery pieces, and connecting the plurality of battery pieces in series and parallel; and step S3, providing a front packaging piece, and adhering the front packaging piece to the front surface of the battery piece by using cover plate glue. The invention changes the traditional process flow of welding and packaging the battery by utilizing the characteristics of the battery with the same surface electrode, and the first back packaging piece can provide support for the battery piece and balance the stress in the battery piece when the battery piece is welded on the front surface by packaging the back surfaces of the battery pieces, connecting the battery pieces in series and parallel and completing the front surface packaging mode of the battery piece.
Description
Technical Field
The invention relates to the technical field of aerospace vehicle energy systems, in particular to a packaging method for a coplanar electrode flexible solar cell.
Background
At present, aiming at the background of application requirements in future space, the flexible thin-film gallium arsenide solar cell technology has become a research hotspot at home and abroad. The thin film gallium arsenide solar cell not only keeps the high efficiency of the gallium arsenide solar cell, but also has the advantages of light weight, ultra-thin and the like, and has extremely high weight ratio power. The thin film gallium arsenide solar cell adopts polyimide as a cell substrate, the weight ratio power of the cell exceeds 3000W/kg, the curl radius can be smaller than 1cm, and the thin film gallium arsenide solar cell is very suitable for being attached to the surfaces of space spacecrafts such as microsatellites, space detectors and the like.
The light and high-efficiency advantages of the thin film gallium arsenide solar cell coexist, namely, two problems exist in the preparation process of the thin film gallium arsenide solar cell component: (1) in the conventional battery assembly manufacturing process, the welding of the battery piece is usually finished first, and then the battery piece is packaged. Because the gallium arsenide solar cell is formed by compounding a plurality of layers of different materials, the internal stress of the gallium arsenide solar cell is uneven, and the cell is easy to bend so as to influence the welding of the gallium arsenide solar cell; (2) as shown in fig. 1, the gallium arsenide battery piece sequentially comprises a front electrode layer, an active layer and a back electrode layer from front to back. Since the gallium arsenide battery sheet is thin, the distance between the front electrode and the back electrode is short, when the interconnection sheet is deformed, the interconnection sheet is liable to generate a phenomenon as shown in the diagram B of fig. 1, i.e., the interconnection sheet contacts the side walls of the front electrode and the front electrode at the same time, resulting in a short circuit of the battery.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides a packaging method for a homofacial electrode flexible solar cell. Unlike traditional battery packaging technology, the invention firstly packages the back of the battery piece, then completes the series-parallel connection and front packaging of the battery piece.
In order to achieve the above object, the present invention provides a packaging method for a coplanar electrode flexible solar cell, the packaging method comprising the steps of:
step S1, packaging the back of the battery piece: providing a first back packaging piece, wherein a plurality of grooves are formed in the surface of the first back packaging piece; and filling negative film glue in the groove, and filling the back surface of the battery piece facing the negative film glue into the groove.
Preferably, after the battery piece is arranged in the groove, a pressing block is arranged on the front surface of the battery piece, the battery piece is pressed down by the pressing block, so that the battery piece can be embedded on the surface of the negative film adhesive, and at least part of the side wall of the battery piece is covered after the negative film adhesive is solidified.
Preferably, the front surface of the battery piece is stuck with an electrostatic adsorption film; and after the pressing block is removed from the battery piece, removing the electrostatic adsorption film from the front surface of the battery piece, and exposing the electrode so as to carry out series-parallel connection of the battery piece.
Step S2, series-parallel connection of the battery pieces: and electrically connecting the plurality of battery pieces to enable the plurality of battery pieces to be connected in series and parallel.
Specifically, the battery pieces are connected in series and parallel in a welding mode or a mode of using conductive adhesive.
Step S3, packaging the front surface of the battery piece: a front side package is provided that is adhered to the front side of the battery cell using a coverglass adhesive.
Preferably, the depth of the groove is greater than the thickness of the battery plate.
Preferably, after the negative film is cured, at least part of the side wall of the battery piece is covered.
Preferably, the first back side package is prepared by:
taking an initial back packaging piece with a flat surface, and directly etching the surface of the initial back packaging piece by using machinery or laser to form a groove; or alternatively, the first and second heat exchangers may be,
taking an initial back packaging piece with a flat surface, etching a through hole on the initial back packaging piece, and forming a second back packaging piece; and adhering the second back surface packaging piece to another initial back surface packaging piece.
Preferably, the first back package is a back film or a back plate, and the back film is made of polyimide.
Preferably, the cover plate glue is silicon rubber or polyolefin glue, the front packaging piece is cerium doped glass or ethylene-tetrafluoroethylene copolymer light-transmitting film, and the bottom plate glue is silicon rubber.
Preferably, the flexible solar cell is a gallium arsenide, amorphous silicon, copper indium gallium tin, cadmium telluride, or perovskite thin film solar cell.
Compared with the prior art, the invention has the beneficial effects that:
(1) The invention changes the traditional process flow of welding and packaging the battery by utilizing the characteristics of the battery with the same surface electrode, and the first back packaging piece can provide support for the battery piece when the battery piece is welded on the front surface by packaging the back surfaces of the battery pieces, connecting the battery pieces in series and parallel and completing the front surface packaging mode of the battery piece, so that the stress in the battery piece is balanced and the battery piece is prevented from being bent due to uneven stress.
(2) According to the invention, the battery piece is embedded into the groove to complete the packaging of the battery piece, so that the side wall of the groove protects the side wall of the electrode layer on the back of the battery piece. The principle is as follows:
because the battery pieces are embedded in the grooves, the interconnecting pieces need to pass through the side walls of the grooves to electrically connect two adjacent battery pieces. At this time, if the interconnection sheet is deformed, there is a tendency that the interconnection sheet moves toward the side wall of the back electrode layer, and the side wall of the groove blocks the movement toward the side wall of the back electrode layer, thereby reducing the risk that the interconnection sheet contacts the side wall of the back electrode layer to cause short circuit of the battery.
(3) When the battery piece is packaged on the back, the negative film glue at least coats part of the side wall of the back electrode layer, and the part of the side wall is subjected to insulation treatment through the negative film glue, so that even if the interconnecting piece contacts with the part of the side wall subjected to insulation treatment, the battery short circuit can not occur, and the risk of the battery short circuit is further reduced.
(4) After the negative film adhesive and the battery piece are arranged in the groove, a pressing block is arranged on the surface of the battery piece, and the battery piece is slightly pressed down by the pressing block. The arrangement is that after the negative film glue and the battery piece are arranged in the groove, the battery piece is arranged on the negative film glue, and the battery piece can be embedded on the surface of the negative film glue by slightly pressing the battery piece down by the pressing block, so that the negative film glue can at least cover part of the side wall of the back electrode layer.
Drawings
FIG. 1 is a schematic diagram of an electrical connection of a solar cell; in fig. 1, a is an electrical connection schematic diagram of an existing solar cell in a normal state of an interconnection sheet, and B in fig. 1 is an electrical connection schematic diagram of an existing solar cell in a deformed state of an interconnection sheet.
FIG. 2 is a flow chart of the packaging method of the coplanar electrode flexible solar cell; fig. 2 a is a schematic diagram of a state of back packaging of a battery piece in the packaging method for the ipsilateral electrode flexible solar battery according to the invention; fig. 2B is a schematic diagram of a state of front packaging of a battery piece in the packaging method for the ipsilateral electrode flexible solar battery according to the present invention; fig. 2C is a schematic diagram of a state after the encapsulation of the battery piece is completed in the encapsulation method for the coplanar electrode flexible solar battery according to the present invention.
Fig. 3 is a schematic diagram of electrical connection between adjacent battery cells after the battery cell package of the present invention is completed.
Fig. 4 is a front view of a back side package with recess etching performed in accordance with the present invention.
Fig. 5 is a top view of a recess etched back package according to the present invention.
In the figure: 1-front packaging piece, 2-cover plate glue, 3-battery piece, 4-bottom plate glue, 5-back packaging piece, 6-electrostatic adsorption film, 7-briquetting and 8-interconnecting piece.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings and examples.
As shown in fig. 2, the invention provides a packaging method for a coplanar electrode flexible solar cell, which comprises the following steps:
step S1, back packaging of the battery piece 3:
a first backside package 5 is provided, the surface of the first backside package 5 being provided with a number of grooves. And filling the negative film adhesive 4 in the groove, and then loading the back surface of the battery piece 3 facing the negative film adhesive 4 into the groove.
Step S2, series-parallel connection of the battery pieces 3:
and electrically connecting the plurality of battery pieces 3 to enable the plurality of battery pieces 3 to be connected in series and parallel.
Step S3, front packaging of the battery piece 3:
a front side package 1 is provided, and the front side package 1 is adhered to the front side of the battery cell 3 using a cover tape 2.
The packaging method of the invention is designed for the same-side electrode battery. The structure of the conventional solar cell from the front side to the back side is sequentially a front electrode layer, an active layer and a back electrode layer, the structure of the homofacial electrode cell is different from that of the conventional solar cell, the homofacial electrode cell is characterized in that the active layer is corroded to expose the back electrode layer from the front side on the basis of the conventional solar cell, and the cell can be electrically connected with other cells by connecting the interconnection sheet to the front side of the back electrode layer, so that the serial-parallel operation of the cells is only performed on the front side of the cell.
According to the invention, the characteristics of the same-surface electrode battery are utilized, the traditional process flow of welding and packaging the battery is changed, and the back of the battery piece 3 is packaged, the battery piece 3 is connected in series and parallel, and the front packaging mode of the battery piece 3 is completed, so that the first back packaging piece 5 provides support for the battery piece 3 when the battery piece 3 is welded on the front, the stress in the battery piece 3 is balanced, and the bending caused by uneven battery stress is avoided.
In addition, the invention completes the packaging of the battery piece by embedding the battery piece into the groove, so that the side wall of the groove protects the side wall of the electrode layer on the back of the battery piece, and the principle is as follows:
as shown in fig. 3, since the battery plate 3 of the present invention is a completed package embedded in the recess, the interconnection plate 8 must pass over the sidewall of the recess to electrically connect two adjacent battery plates 3. At this time, if the interconnection sheet 8 has a tendency to deform and move toward the rear electrode layer side wall, the side wall of the groove may act as a barrier to prevent the interconnection sheet 8 from moving toward the rear electrode layer side wall, thereby reducing the occurrence of a phenomenon in which the interconnection sheet 8 contacts both the front electrode layer and the rear electrode layer side wall to cause a short circuit of the battery, as shown in fig. 1B.
In some embodiments, the depth of the groove may be greater than the thickness of the battery plate 3 or slightly less than the thickness of the battery plate 3, so long as the sidewall of the groove can shield a portion of the sidewall of the back electrode layer, so as to prevent the interconnection plate 8 from contacting with the portion of the sidewall to some extent.
In some embodiments, the length and width of the grooves are slightly greater than the length and width of the battery plate 3.
Specifically, the length and width of the groove can be 0.1-0.2mm more than the length and width of the battery piece, so that a small gap is reserved between the groove and the side wall of the back electrode layer, the interconnection piece 8 is not easy to extend into the space between the side wall of the groove and the side wall of the back electrode layer, and the risk that the interconnection piece 8 contacts the side wall of the back electrode layer is reduced.
In some embodiments, the method of preparing the first backside package 5 may be selected from the following two types:
first, for thicker, unetched initial backside packages, grooves are etched directly into the initial backside package surface using mechanical or laser;
second, for the thinner initial back package, a through hole is etched on the initial back package to form a second back package, and then the second back package is bonded on the unetched initial back package to form the first back package 5.
In some embodiments, the first back package 5 may be a flexible back film or a rigid back plate.
For the same battery piece, when the front electrode and the back electrode of the battery piece are communicated, the battery can be short-circuited, so in some embodiments, after the battery piece 3 is arranged in the groove, the pressing block 7 is arranged on the front surface of the battery piece 3, the battery piece 3 is lightly pressed by the pressing block 7, so that the battery piece 3 can be embedded on the surface of the negative film adhesive 4, the negative film adhesive 4 at least covers the side wall of part of the back electrode layer of the battery piece 3, and even if the interconnecting piece contacts with the side wall of the insulating treatment, the battery short circuit can not occur, and the risk of the battery short circuit is further reduced.
In addition, since the flexible battery sheet 3 is flexible, in some embodiments, before the back surface of the battery sheet 3 is packaged, the front surface of the battery sheet 3 is covered with the electrostatic adsorption film 6, and the electrostatic adsorption film 6 makes the battery sheet 3 be leveled in advance, so that subsequent packaging operations are convenient.
In some embodiments, the serial-parallel connection of the battery pieces 3 may be realized through a welding process such as resistance welding, soldering, and the like, and may also be realized through the use of conductive glue.
In some embodiments, the battery pieces 3 are connected in series and parallel through the interconnection pieces 8, and welding bypass diodes can be added as required.
Example 1
The cover plate adhesive 2 and the bottom plate adhesive 4 used in the embodiment are silicon rubber, the front packaging piece 1 is cerium doped glass, and the first back packaging piece is polyimide back film. The cerium doped glass has certain irradiation resistance, optical transmittance is more than 92%, and after the glass is irradiated, the light transmittance in the wavelength range of 500-1100 nm is reduced by about 0.8%.
The packaging method for the coplanar electrode flexible solar cell provided by the embodiment specifically comprises the following steps:
(1) According to the required electrical performance parameters, the battery pieces 3 are subjected to piece distribution and series-parallel connection design, wherein the design content comprises the size of the flexible thin film solar cell module, the spacing and the number of grooves on the first back packaging piece, the series-parallel connection form of the battery pieces 3 and the like, and a drawing is formed; the flexible thin film solar cell module is formed by connecting a plurality of cell pieces in series-parallel and sealing. In this example, the dimensions of the drawing sheet were 90cm by 60cm.
(2) Inputting the drawing into a mechanical scribing or laser etching device, cutting the first back packaging piece with the size of 300 mu m into the size of 90cm multiplied by 60cm, and etching grooves with the depth of 100 mu m and the area of 40.1mm multiplied by 60.1mm at the position of the battery piece 3 to be pasted according to the drawing, wherein the distance between adjacent groove edges is 0.9mm, so as to form the back film with the groove array arrangement shown in fig. 4 and 5.
(3) Referring to fig. 2 a, a negative film adhesive 4 and a flexible thin film gallium arsenide solar cell (4 cm×6cm, 65 μm thick) with electrostatic adsorption films 6 attached on the front surface are sequentially placed in the grooves, 75-100 g of pressing blocks 7 are placed on each electrostatic adsorption film 6, the battery pieces 3 are lightly pressed to fix the battery pieces 3 with the negative film adhesive 4, and after the negative film adhesive 4 is solidified, the surface pressing blocks 7 and the electrostatic adsorption films 6 are removed.
(4) According to the drawing in the step (1), the battery pieces 3 with the back packaged and fixed are welded through the interconnecting piece 8, so that the series-parallel connection of the batteries is realized, and a welding bypass diode can be added according to the requirement.
(5) Referring to fig. 2B, a 25 μm cover tape 2 is sequentially coated on the front surface of the completely welded battery, and a 65 μm thick front package 1 is placed. And pressurizing and packaging by the pressing block 7 again, removing the pressing block 7 after solidification, and finishing the front packaging of the battery to form the thin film gallium arsenide solar cell module which is applicable to the space environment and shown in the C diagram of fig. 2.
Example 2
The difference between this embodiment and embodiment 1 is that in step (5), the cover sheet adhesive 2 is a Polyolefin (POE) adhesive film, the front surface packaging member 1 is an ethylene-tetrafluoroethylene copolymer (ETFE) light-transmitting film, and the front surface packaging of the battery is realized by a lamination process.
In summary, unlike the conventional battery packaging process, the present invention completes the back packaging of the battery, and then completes the serial-parallel connection and front packaging of the battery. When the back packaging is performed, the battery piece is packaged in the groove by forming the groove on the surface of the back packaging piece, so that the groove forms insulation protection on the side wall of the back electrode layer of the battery piece, and when the interconnection piece is deformed, the interconnection piece is prevented from moving towards the side wall of the back electrode layer, so that the risk of short circuit of the battery caused by the contact of the interconnection piece with the side wall of the back electrode layer is reduced.
While the present invention has been described in detail through the foregoing description of the preferred embodiment, it should be understood that the foregoing description is not to be considered as limiting the invention. Many modifications and substitutions of the present invention will become apparent to those of ordinary skill in the art upon reading the foregoing. Accordingly, the scope of the invention should be limited only by the attached claims.
Claims (10)
1. The packaging method for the coplanar electrode flexible solar cell is characterized by comprising the following steps of:
step S1, packaging the back of the battery piece:
providing a first back packaging piece, wherein a plurality of grooves are formed in the surface of the first back packaging piece; filling negative film glue in the groove, and filling the back surface of the battery piece facing the negative film glue into the groove;
step S2, series-parallel connection of the battery pieces:
electrically connecting a plurality of battery pieces to enable the plurality of battery pieces to be connected in series and parallel;
step S3, packaging the front surface of the battery piece:
a front side package is provided that is adhered to the front side of the battery cell using a coverglass adhesive.
2. The packaging method for the coplanar electrode flexible solar cell as set forth in claim 1 wherein the depth of the groove is greater than the thickness of the cell sheet.
3. The packaging method for the coplanar electrode flexible solar cell according to claim 1, wherein in step S1, after the cell is mounted in the groove, a pressing block is placed on the front surface of the cell, and the cell is pressed down by the pressing block, so that the cell can be embedded on the surface of the negative film adhesive, and at least part of the side wall of the cell is covered after the negative film adhesive is solidified.
4. The packaging method for the coplanar electrode flexible solar battery as set forth in claim 3, wherein in step S1, an electrostatic adsorption film is attached to the front surface of the battery piece; and after the pressing block is removed from the battery piece, removing the electrostatic adsorption film from the front surface of the battery piece, and exposing the electrode so as to carry out series-parallel connection of the battery piece.
5. The packaging method for the coplanar electrode flexible solar battery as set forth in claim 1, wherein in step S2, the battery pieces are connected in series and parallel by welding or using conductive adhesive.
6. The packaging method for a homoplanar electrode flexible solar cell according to claim 1, wherein the first back side package is prepared by:
taking an initial back packaging piece with a flat surface, and directly etching the surface of the initial back packaging piece by using machinery or laser to form a groove; or alternatively, the first and second heat exchangers may be,
taking an initial back packaging piece with a flat surface, etching a through hole on the initial back packaging piece, and forming a second back packaging piece; and adhering the second back surface packaging piece to another initial back surface packaging piece.
7. The packaging method for a homoplanar electrode flexible solar cell according to claim 1, wherein the first back package is a back film or a back sheet, the back film being made of polyimide.
8. The packaging method for the same-side electrode flexible solar cell according to claim 1, wherein the cover sheet adhesive is silicon rubber or polyolefin adhesive, and the front-side packaging piece is cerium-doped glass or ethylene-tetrafluoroethylene copolymer light-transmitting film.
9. The packaging method for the coplanar electrode flexible solar cell as set forth in claim 1, wherein the negative film is silicone rubber.
10. The packaging method for the coplanar electrode flexible solar cell as set forth in claim 1, wherein the flexible solar cell is gallium arsenide, amorphous silicon, copper indium gallium tin, cadmium telluride, or perovskite thin film solar cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311115126.9A CN117153918A (en) | 2023-08-31 | 2023-08-31 | Packaging method for coplanar electrode flexible solar cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311115126.9A CN117153918A (en) | 2023-08-31 | 2023-08-31 | Packaging method for coplanar electrode flexible solar cell |
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|---|---|
| CN117153918A true CN117153918A (en) | 2023-12-01 |
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|---|---|---|---|
| CN202311115126.9A Pending CN117153918A (en) | 2023-08-31 | 2023-08-31 | Packaging method for coplanar electrode flexible solar cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117153918A (en) |
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2023
- 2023-08-31 CN CN202311115126.9A patent/CN117153918A/en active Pending
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