CN212874507U - Lamination assembly with EVA (ethylene vinyl acetate) film and photovoltaic assembly - Google Patents
Lamination assembly with EVA (ethylene vinyl acetate) film and photovoltaic assembly Download PDFInfo
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- CN212874507U CN212874507U CN202022183872.XU CN202022183872U CN212874507U CN 212874507 U CN212874507 U CN 212874507U CN 202022183872 U CN202022183872 U CN 202022183872U CN 212874507 U CN212874507 U CN 212874507U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The utility model discloses a laminated assembly with EVA films and a photovoltaic assembly, wherein the laminated assembly comprises a plurality of battery strings, and two bus bars are arranged between two adjacent battery strings on the same horizontal line; the battery piece openly is equipped with first glued membrane and photovoltaic glass from inside to outside in proper order, and the battery piece back is equipped with second glued membrane and backplate from inside to outside in proper order, and a tip of each busbar is visited out the second glued membrane and is formed the bending part with the backplate, and the lamination subassembly is still including establishing the EVA film between first glued membrane and the battery piece that is close to the busbar kink, and the EVA film is established in the below of busbar kink and is laminated with the busbar, and the surface area of EVA film is less than the surface area of first glued membrane and second glued membrane. The utility model provides a lamination subassembly, under the condition that pressure reduces when laminator lamination, through setting up the EVA film, can fill the gap between busbar lead-out wire and the first glued membrane, avoid producing the bubble, and then improve photovoltaic module's quality.
Description
Technical Field
The utility model relates to a photovoltaic module field especially relates to a lamination subassembly and photovoltaic module with EVA film.
Background
The core unit of the photovoltaic power generation is a photovoltaic component, and a laminated component is one type of the photovoltaic component, so that the clearance of battery pieces is eliminated, and the component power in unit area is improved.
In the production of a photovoltaic module, a bus bar penetrates through two layers of EVA (ethylene vinyl acetate) films (two layers of EVA films are second films and are arranged between a back plate and the back surface of a cell) and the back plate to be exposed (see figure 3) and needs to be bent towards two sides, then a bus bar lead wire can be bent, a gap (indicated by an arrow in figure 4) between the bus bar lead wire and one layer of EVA film (one layer of EVA film is first film and is arranged between photovoltaic glass and the front surface of the cell) can be increased, so that bubbles are generated, if a laminating machine is used for laminating, the pressure is higher, the gap is reduced, and the bubble risk is reduced.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that exists among the prior art, the utility model provides a lamination subassembly and photovoltaic module with EVA film, technical scheme is as follows:
the utility model provides a lamination assembly with EVA film, the lamination assembly includes a plurality of battery strings, each battery string is formed by stacking a plurality of battery pieces, two bus bars in straight line arrangement are arranged between two adjacent battery strings on the same horizontal line, the bus bars are vertically arranged; the front of battery piece has set gradually first glued membrane and photovoltaic glass from inside to outside, the back of battery piece has set gradually second glued membrane and backplate from inside to outside, and a tip of each busbar is visited out second glued membrane and backplate and is formed bending portion, the lamination subassembly is still including setting up first glued membrane is with being close to EVA film between the battery piece of busbar kink, just the EVA film sets up the below of busbar kink and with the laminating of busbar, the EVA film is made by the EVA material, the surface area of EVA film is less than the surface area of first glued membrane and second glued membrane.
Furthermore, a plurality of solder strips are further arranged on the back face of each battery piece, the solder strips on the battery pieces close to the bus bars extend to the bus bars, and the solder strips close to the bending portions extend to the bus bars from the battery pieces and are attached to the EVA films.
Further, the EVA film is of a square structure.
Further, two bus bars are provided with two battery pieces respectively along its length direction's both sides, and the kink of two bus bars sets up relatively, the EVA film sets up between bus bar and the first glued membrane, the EVA film all laminates with four battery pieces.
Further, the length range of the EVA film is set to be 38-45 mm.
Further, the EVA film and the first adhesive film are made of the same material.
Further, the thickness range of the EVA film is set to be 0.55-0.65 mm.
The utility model also provides a photovoltaic module, it includes the multiunit the lamination subassembly with the EVA film.
The utility model provides a beneficial effect that technical scheme brought as follows:
the utility model provides a lamination subassembly with EVA film, under the condition that pressure reduces when laminator lamination, through setting up the EVA film, can fill the gap between busbar lead-out wire and the first glued membrane to avoid the gassing, and then improve photovoltaic module's quality.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a perspective view of a lamination assembly with EVA film provided by an embodiment of the present invention;
fig. 2 is a side view of a lamination assembly with EVA film provided by an embodiment of the present invention;
fig. 3 is a side view of a bus bar lead-out wire provided by an embodiment of the present invention before bending;
fig. 4 is a side view of a bent bus bar lead-out wire according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a plurality of battery strings according to an embodiment of the present invention.
Wherein the reference numerals include: 1-battery piece, 2-bus bar, 3-first adhesive film, 4-photovoltaic glass, 5-second adhesive film, 6-back plate, 7-bending part, 8-solder strip and 9-EVA film.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or device.
In an embodiment of the utility model, a lamination subassembly with EVA film is provided, the concrete structure refers to fig. 2, and it includes a plurality of battery clusters, and each battery cluster is range upon range of by a plurality of battery pieces 1 and forms, and the length direction of a plurality of battery clusters is parallel, is located to be equipped with two between two adjacent battery clusters of same water flat line and is the busbar 2 that the straight line set up, the vertical setting of busbar 2, promptly the length direction of busbar 2 is perpendicular with the length direction of battery cluster, refers to fig. 5, and two busbar 2 set up relatively, with the battery piece that busbar 2 is adjacent with keep the interval between the busbar 2.
The specific structure of the lamination assembly is as follows: the front surface of the battery piece 1 is sequentially provided with a first adhesive film 3 and photovoltaic glass 4 from inside to outside, namely the first adhesive film 3 is contacted with the front surface of the battery piece 1, and the photovoltaic glass 4 is contacted with the first adhesive film 3; the back of the battery piece 1 is sequentially provided with a second adhesive film 5 and a back plate 6 from inside to outside, namely the second adhesive film 5 is in contact with the back of the battery piece 1, and the back plate 6 is in contact with the second adhesive film 5.
The bus bars 2 are located between two adjacent battery strings on the same horizontal line, one end of each bus bar 2 extends out of the second adhesive film 5 and the back plate 6 to form a bent part 7, also called as a lead-out wire, the lead-out wire is vertically arranged to penetrate through the back plate to be exposed above the back plate, and the lead-out wire is connected with a junction box bonding pad after being laminated. The bent portions of the two bus bars 2 are disposed opposite to each other with a space therebetween.
The lamination subassembly is still including setting up first glued membrane 3 with be close to EVA film 9 between the battery piece 1 of 2 kinks 7 of busbar, just EVA film 9 sets up the below of 2 kinks 7 of busbar and laminate with busbar 2. Through setting up EVA film 9, can fill the gap between 2 leading-out wires of busbar and the first glued membrane 3 to compensate the bubble problem that arouses because of lamination pressure is little.
Still be provided with the solder strip 8 that a plurality of intervals set up on the back of every battery piece 1, be close to at least one solder strip 8 on the battery piece 1 of 2 kink 7 of busbar extends to busbar 2, and the solder strip 8 that is close to kink 7 is from stretching out the part that battery piece 1 extends to busbar 2 with the laminating of EVA film 9. Because the length of the gap is larger, the length of the EVA film 9 is larger than that of the gap, namely the area of the EVA film 9 is increased, and the EVA film 9 can extend to at least one welding strip and can be contacted with the welding strip.
The surface area of the EVA film 9 is smaller than the surface areas of the first adhesive film 3 and the second adhesive film 5, the range of the length of the EVA film 9 (the length direction of the EVA film is parallel to the length direction of the bus bar) is set to be 38-45mm, preferably 40mm, the gap between the bus bar and the first adhesive film 3 is relatively small, and only the EVA film 9 with a small area is needed.
EVA film 9 is square structure, conveniently tailors.
The utility model provides an in one embodiment, two busbar 2 are provided with two battery slices 1 respectively along its length direction's both sides, and the kink 7 of two busbar 2 sets up relatively, EVA film 9 sets up between busbar 2 and the first glued membrane 3, EVA film 9 all laminates with four battery slices 1. A welding strip 8 is arranged on the battery piece 1 close to the bending part 7 of the bus bar 2, and the welding strip 8 extends to the bus bar 2 to be attached to the EVA film 9.
The EVA film 9 is the same as the first adhesive film 3 in material and is made of EVA material, the EVA has a vinyl acetate copolymer in the name, is rich in elasticity, is white and semitransparent in color, has good viscosity, can be softened and flow when heated, and can fill the gap between the outgoing line of the bus bar 2 and the first adhesive film 3, thereby compensating the problem of bubbles caused by small lamination pressure.
The thickness range of the EVA film 9 is set to be 0.55-0.65mm, and gaps can be filled only through a small film, so that materials are saved, and the cost is reduced.
The utility model also provides a photovoltaic module, it includes the multiunit the lamination subassembly.
The utility model provides a lamination subassembly with EVA film, under the condition that pressure reduces when laminator lamination, through setting up the EVA film, can fill the gap between busbar lead-out wire and the first glued membrane to solve the bubble problem that arouses for a short time because of lamination pressure, and then improve photovoltaic module's quality.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (8)
1. A laminated assembly with EVA films comprises a plurality of battery strings, wherein each battery string is formed by laminating a plurality of battery sheets (1), two bus bars (2) which are linearly arranged are arranged between two adjacent battery strings which are positioned on the same horizontal line, and the bus bars (2) are vertically arranged; the front surface of the cell piece (1) is sequentially provided with a first adhesive film (3) and photovoltaic glass (4) from inside to outside, the back surface of the battery piece (1) is sequentially provided with a second adhesive film (5) and a back plate (6) from inside to outside, one end part of each bus bar (2) extends out of the second adhesive film (5) and the back plate (6) to form a bending part (7), characterized in that the lamination assembly further comprises an EVA film (9) arranged between the first adhesive film (3) and the battery piece (1) close to the bending part (7) of the bus bar (2), the EVA film (9) is arranged below the bending part (7) of the bus bar (2) and is attached to the bus bar (2), the EVA film (9) is made of EVA materials, and the surface area of the EVA film (9) is smaller than the surface areas of the first adhesive film (3) and the second adhesive film (5).
2. The lamination assembly with EVA film according to claim 1, wherein a plurality of solder strips (8) are further disposed on the back surface of each cell (1), the solder strips (8) on the cell (1) near the bus bar (2) extend to the bus bar (2), and the solder strips (8) near the bending portion (7) extend from the battery (1) to the bus bar (2) to be attached to the EVA film (9).
3. The lamination assembly with EVA film according to claim 1, characterized in that the EVA film (9) is of square structure.
4. The lamination assembly with EVA film according to claim 1, wherein two cell sheets (1) are respectively disposed on two sides of two bus bars (2) along the length direction, the bent portions (7) of the two bus bars (2) are oppositely disposed, the EVA film (9) is disposed between the bus bars (2) and the first adhesive film (3), and the EVA film (9) is attached to four cell sheets (1).
5. The lamination assembly with EVA film according to claim 1, characterized in that the length of the EVA film (9) is set in the range 38-45 mm.
6. The lamination assembly with EVA film according to claim 1, characterized in that the EVA film (9) is of the same material as the first film (3).
7. The lamination assembly with EVA film according to claim 1, characterized in that the thickness of the EVA film (9) is set in the range of 0.55-0.65 mm.
8. A photovoltaic module comprising a plurality of sets of lamination assemblies with EVA sheeting as claimed in any of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022183872.XU CN212874507U (en) | 2020-09-29 | 2020-09-29 | Lamination assembly with EVA (ethylene vinyl acetate) film and photovoltaic assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022183872.XU CN212874507U (en) | 2020-09-29 | 2020-09-29 | Lamination assembly with EVA (ethylene vinyl acetate) film and photovoltaic assembly |
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| Publication Number | Publication Date |
|---|---|
| CN212874507U true CN212874507U (en) | 2021-04-02 |
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| CN202022183872.XU Active CN212874507U (en) | 2020-09-29 | 2020-09-29 | Lamination assembly with EVA (ethylene vinyl acetate) film and photovoltaic assembly |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113838949A (en) * | 2021-10-21 | 2021-12-24 | 苏州晟成智能装备有限公司 | Solar panel lead-out wire placer |
| CN114744068A (en) * | 2022-03-30 | 2022-07-12 | 天津南玻节能玻璃有限公司 | Photovoltaic building integrated assembly and preparation method thereof |
| CN115548167A (en) * | 2022-12-02 | 2022-12-30 | 苏州小牛自动化设备有限公司 | Battery string preparation method, photovoltaic module preparation method and battery string preparation equipment |
| AU2022235523B1 (en) * | 2022-05-31 | 2023-11-16 | Jinko Solar (Haining) Co., Ltd. | Photovoltaic module |
-
2020
- 2020-09-29 CN CN202022183872.XU patent/CN212874507U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113838949A (en) * | 2021-10-21 | 2021-12-24 | 苏州晟成智能装备有限公司 | Solar panel lead-out wire placer |
| CN114744068A (en) * | 2022-03-30 | 2022-07-12 | 天津南玻节能玻璃有限公司 | Photovoltaic building integrated assembly and preparation method thereof |
| CN114744068B (en) * | 2022-03-30 | 2024-03-19 | 天津南玻节能玻璃有限公司 | Photovoltaic building integrated assembly and preparation method thereof |
| AU2022235523B1 (en) * | 2022-05-31 | 2023-11-16 | Jinko Solar (Haining) Co., Ltd. | Photovoltaic module |
| CN115548167A (en) * | 2022-12-02 | 2022-12-30 | 苏州小牛自动化设备有限公司 | Battery string preparation method, photovoltaic module preparation method and battery string preparation equipment |
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