CN214956906U - Laminated photovoltaic building integrated assembly with fully-serial side outgoing lines - Google Patents
Laminated photovoltaic building integrated assembly with fully-serial side outgoing lines Download PDFInfo
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- CN214956906U CN214956906U CN202121473337.6U CN202121473337U CN214956906U CN 214956906 U CN214956906 U CN 214956906U CN 202121473337 U CN202121473337 U CN 202121473337U CN 214956906 U CN214956906 U CN 214956906U
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- battery
- back contact
- layer
- strings
- toughened glass
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- 239000005341 toughened glass Substances 0.000 claims abstract description 46
- 239000002313 adhesive film Substances 0.000 claims abstract description 20
- 238000004806 packaging method and process Methods 0.000 claims abstract description 20
- 238000003466 welding Methods 0.000 claims abstract description 16
- 239000011521 glass Substances 0.000 claims description 5
- 239000005329 float glass Substances 0.000 claims description 3
- 230000010354 integration Effects 0.000 claims description 3
- 210000004027 cell Anatomy 0.000 claims 8
- 210000004460 N cell Anatomy 0.000 claims 1
- 238000003475 lamination Methods 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 4
- 238000005286 illumination Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910021419 crystalline silicon Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 101001073212 Arabidopsis thaliana Peroxidase 33 Proteins 0.000 description 1
- 101001123325 Homo sapiens Peroxisome proliferator-activated receptor gamma coactivator 1-beta Proteins 0.000 description 1
- 102100028961 Peroxisome proliferator-activated receptor gamma coactivator 1-beta Human genes 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction 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
- 238000006386 neutralization reaction Methods 0.000 description 1
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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
Abstract
The utility model discloses a laminated photovoltaic building integrated assembly with full-series side outgoing lines, which comprises an upper layer of toughened glass, an upper layer of packaging adhesive film, a back contact battery, a lower layer of packaging adhesive film, a lower layer of toughened glass and a plurality of leads at one end of the back contact battery; each string of back contact battery strings of the back contact battery comprises a plurality of small battery pieces, each small battery piece is divided into a first battery piece with a positive electrode on the back surface and a second battery piece with a negative electrode on the back surface, the first battery pieces and the second battery pieces are alternately arranged in the length direction of the back contact battery string, and every two adjacent small battery pieces arranged in the length direction of the back contact battery string are overlapped together in an at least partially overlapping mode; the small battery pieces on the battery strings are connected in series through the welding strips on the back surfaces, and each lead is electrically connected with two adjacent strings of back contact battery strings to connect the two strings of back contact battery strings in series. The utility model discloses eliminate the piece interval, the colour uniformity of subassembly outward appearance is high, easily electrical connection moreover, and the cost is lower, does benefit to the industrialization and promotes.
Description
Technical Field
The utility model relates to a solar module technical field especially relates to a lamination photovoltaic building integration subassembly that full series connection side is qualified for the next round of competitions.
Background
Under the promotion of the 30-60 carbon peak carbon neutralization target in China, the first formal proposal in China is to construct a novel power system taking new energy as a main body, and as the building energy consumption with the largest energy consumption, a Building Integrated Photovoltaic (BIPV) product becomes an essential part for realizing low-energy-consumption buildings and near-zero-energy-consumption buildings, and meanwhile, as the BIPV product is applied to buildings, the aesthetic requirement on BIPV components is higher than that of conventional components.
The conventional battery usually adopts a PERC/TOPCon battery, the positive electrode and the negative electrode of the conventional battery are respectively distributed on the front surface and the back surface of the battery, and welding strips can be seen on the front surface of the assembly after welding to influence the appearance, so that the integral ornamental value of a building is influenced, and the conventional battery cannot be suitable for the building. In addition, the existence of the welding strip also influences the light receiving area of the photovoltaic module, and under the condition of the same area, the arrangement quantity of the cell pieces is small due to the existence of the piece spacing after the conventional cell is welded, so that the generating capacity is influenced.
SUMMERY OF THE UTILITY MODEL
In view of the not enough of prior art existence, the utility model provides a lamination BIPV (building integrated photovoltaic) subassembly that full series side is qualified for the next round of competitions, the assembly outward appearance colour is uniform highly, has solved conventional battery because of the battery piece and has welded the outward appearance colour difference that the area arouses under the illumination because of the material difference, has avoided the production of the piece interval that the welding arouses, has promoted the power output of subassembly under the equal area, has guaranteed generating efficiency.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a laminated photovoltaic building integrated assembly with fully-series side outgoing lines comprises an upper layer of toughened glass, an upper layer of packaging adhesive film, a back contact battery, a lower layer of packaging adhesive film, a lower layer of toughened glass and a plurality of lead wires, wherein the upper layer of toughened glass, the upper layer of packaging adhesive film, the back contact battery, the lower layer of packaging adhesive film and the lower layer of toughened glass are sequentially stacked from top to bottom; the back contact battery comprises a plurality of strings of back contact battery strings, each string of back contact battery string comprises a plurality of small battery pieces, each small battery piece is divided into a first battery piece with a positive electrode on the back surface and a second battery piece with a negative electrode on the back surface, the first battery piece and the second battery piece are alternately arranged in the length direction of the back contact battery string, and every two adjacent small battery pieces arranged in the length direction of the back contact battery string are overlapped together in a partially overlapped mode; and along the length direction of the back contact battery strings, the positive electrodes and the negative electrodes of the small battery pieces on the same straight line are welded by welding strips on the back surface and are connected in series, and each lead is electrically connected with two adjacent back contact battery strings to connect the two back contact battery strings in series.
In one embodiment, the upper tempered glass and the lower tempered glass are ultra-white float glass or colored glass.
In one embodiment, the tail of the previous small battery piece is lapped on the head of the next small battery piece along the length direction of the back contact battery string.
In one embodiment, the overlapping width between every two small battery pieces is 0.1 mm-0.8 mm.
In one embodiment, the small battery piece is a whole battery or 1/N battery, and N is an integer greater than 1.
In one embodiment, the small cell piece is selected from at least one of IBC, TBC, HIT, HJT back contact cell.
As one of the implementation modes, the laminated photovoltaic building integrated assembly with the fully-serial side outgoing lines further comprises a hollow layer and an auxiliary toughened glass layer, wherein the hollow layer and the auxiliary toughened glass layer are sequentially arranged at the bottom of the lower toughened glass layer.
As one embodiment, the laminated photovoltaic building integrated assembly with the fully-serial side outgoing lines further comprises an outer-layer packaging adhesive film and outer-layer toughened glass, wherein the outer-layer packaging adhesive film and the outer-layer toughened glass are sequentially arranged at the bottom of the auxiliary toughened glass layer.
The utility model discloses a positive back contact battery that does not have grid line, through with the battery piece that two polarities are different after according to the mode of arranging in turn overlaps, the use welds the area welding and can realize circuit connection, has eliminated the piece interval, and the colour uniformity of subassembly outward appearance is high, does not have the battery piece and welds the outward appearance colour difference that the area arouses under the illumination because of the material difference, and aesthetic measure is higher. Meanwhile, after the small batteries are connected in series, the power output of the assembly is improved under the same area due to the fact that the small batteries have higher voltage, the side wire outgoing mode ensures that the electrical connection is easy when the building is installed, the junction box can be hidden in a building keel, the building is ensured to be attractive, the cost is lower, and the industrial popularization is facilitated.
Drawings
Fig. 1 is an exploded schematic view of a laminated photovoltaic building integrated assembly with full-series side outgoing lines according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a laminated photovoltaic building integrated assembly with full-series side outgoing lines according to an embodiment of the present invention;
fig. 3 is a schematic partial structure diagram of a back contact battery string according to an embodiment of the present invention.
Detailed Description
In the present invention, the terms "disposed", "provided" and "connected" should be interpreted broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing and simplifying the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in the present invention can be understood by those of ordinary skill in the art as appropriate.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the embodiment of the utility model provides a full series connection side is qualified for the next round of competitions, high-efficient pleasing to the eye lamination photovoltaic building integration subassembly, including top-down stacks gradually upper toughened glass S1, upper encapsulation glued membrane S2, back of the body contact battery S3, lower floor ' S encapsulation glued membrane S4 and lower floor ' S toughened glass S5 that sets up to and be fixed in many lead wires T of back of the body contact battery S3 length direction ' S one end. Wherein the back contact cell S3 includes a plurality of strings of back contact cells arranged in parallel, each string of back contact cells including a plurality of small cells S30, the small cells S30 being divided into a first cell S31 having a positive electrode on the back side and a second cell S32 having a negative electrode on the back side. The first battery piece S31 and the second battery piece S32 are alternately arranged in the length direction of the back contact battery string, and every two adjacent small battery pieces S30 arranged in the length direction of the back contact battery string are overlapped together at least partially in an overlapping mode. Finally, the positive and negative electrodes of the small battery pieces S30 on the same straight line are welded by the welding strip 1 on the back surface and connected in series, and each lead T is electrically connected to two adjacent strings of back contact batteries and connected in series. The circuit structure is in full series connection and is laterally led out, the toughened glass is prevented from being punched due to installation of the junction box, the strength of the toughened glass is reduced, and meanwhile, convenience is brought to constructors for electrical connection and installation.
Fig. 2 is a layout schematic diagram of a 60-sheet version full-series side-outgoing back-contact laminated BIPV assembly, in which a back-contact battery sheet is divided into small cells in equal parts by using a laser scribing device, electrodes of the small cells are arranged in a positive electrode/negative electrode/positive electrode/negative electrode resetting manner, a conventional welding strip or a low-temperature welding strip is used to connect through a back grid line of the back-contact battery to form a series of back-contact battery strings, and then the back-contact battery strings are connected in series by using a lead T.
Because the negative-spacing lamination welding is adopted, the inter-cell spacing between small cells is eliminated, more cells can be arranged in the assembly with the same area, and the assembly efficiency is improved. The lamination welding can realize the welding of littleer battery piece, and the battery piece area is less, carries out the design of subassembly battery piece composing more easily, has solved and has divided the problem that influences lead to having shaped glass by the toughened glass size for building to and use shaped glass can't carry out the problem that battery was composed and was encapsulated, increased the subassembly efficiency simultaneously, increase the service environment who has expanded the BIPV subassembly.
The small cells are welded by adopting negative-spacing lamination, the problem of exposed welding spots between the spacing of back-contact cell modules is solved while the spacing of the cells is eliminated, the uniformity of the appearance color of the front side of the module is high, the module is more attractive under illumination, and the BIPV module is more suitable for scenes with high appearance requirements such as building facades, roofs and curtain walls.
Alternatively, the upper tempered glass S1 and the lower tempered glass S5 may be tempered glass in various forms such as ultra-white float glass or colored glass. The small cell piece S30 is selected from at least one of IBC (indirect back contact, i.e., all back contact crystalline silicon photovoltaic cell), TBC, HIT (hetero-junction with Intrinsic thin-layer, i.e., Heterojunction solar cell), HJT (hetero-junction with Intrinsic thin-layer, i.e., amorphous silicon/crystalline silicon Heterojunction solar cell) back contact cell.
As shown in fig. 3, the tail of the preceding small cell S30 overlaps the head of the following small cell S30 along the length of the back contact cell string. In the present embodiment, the overlapping width between each two small battery pieces S30 is preferably 0.1mm to 0.8 mm.
The small battery piece S30 may be a whole battery or 1/N battery, and N is an integer greater than 1. Namely, a complete back contact battery piece can be divided into equal parts of small batteries, such as 3, 4 and 5 pieces, according to requirements by dividing the back contact battery piece into more than 1/2 pieces through laser division.
In other embodiments, the laminated building integrated photovoltaic module with the fully-serial side outgoing lines may further include a hollow layer and an auxiliary tempered glass layer, wherein the hollow layer and the auxiliary tempered glass layer are sequentially disposed at the bottom of the lower tempered glass S5, so as to form a laminated structure of tempered glass/packaging adhesive film/back-contact battery/packaging adhesive film/tempered glass/hollow layer/tempered glass.
In other embodiments, the laminated photovoltaic building integrated assembly with the fully-serial side outgoing lines may further include an outer packaging adhesive film and an outer toughened glass, which are sequentially disposed at the bottom of the secondary toughened glass layer to form a laminated structure of toughened glass/packaging adhesive film/back-contact battery/packaging adhesive film/toughened glass/hollow layer/toughened glass/packaging adhesive film/toughened glass.
The utility model discloses a positive back contact battery that does not have grid line, through with the battery piece that two polarities are different after according to the mode of arranging in turn overlaps, the use welds the area welding and can realize circuit connection, has eliminated the piece interval, and the colour uniformity of subassembly outward appearance is high, does not have the battery piece and welds the outward appearance colour difference that the area arouses under the illumination because of the material difference, and aesthetic measure is higher. Meanwhile, after the small batteries are connected in series, the power output of the assembly is improved under the same area due to the fact that the small batteries have higher voltage, the side wire outgoing mode ensures that the electrical connection is easy when the building is installed, the junction box can be hidden in a building keel, the building is ensured to be attractive, the cost is lower, and the industrial popularization is facilitated.
The foregoing is directed to embodiments of the present application and it is noted that numerous modifications and adaptations may be made by those skilled in the art without departing from the principles of the present application and are intended to be within the scope of the present application.
Claims (8)
1. The laminated photovoltaic building integrated assembly with the fully-serial side outgoing lines is characterized by comprising upper-layer toughened glass (S1), an upper-layer packaging adhesive film (S2), a back contact battery (S3), a lower-layer packaging adhesive film (S4), lower-layer toughened glass (S5) and a plurality of leads (T) fixed at one end of the back contact battery (S3) in the length direction, wherein the upper-layer toughened glass (S1), the upper-layer packaging adhesive film, the back contact battery (S3), the lower-layer packaging adhesive film and the lower-layer toughened glass (S5) are sequentially stacked from top to bottom; the back contact battery (S3) comprises a plurality of strings of back contact batteries, each string of back contact batteries comprises a plurality of small battery pieces (S30), each small battery piece (S30) is divided into a first battery piece (S31) with a positive electrode on the back surface and a second battery piece (S32) with a negative electrode on the back surface, the first battery piece (S31) and the second battery piece (S32) are alternately arranged in the length direction of the back contact battery string, and each two adjacent small battery pieces (S30) arranged in the length direction of the back contact battery string are overlapped together in an at least partially overlapping mode; along the length direction of the back contact battery strings, the positive electrodes and the negative electrodes of the small battery pieces (S30) on the same straight line are welded by welding strips (1) on the back surface and are connected in series, and each lead (T) is electrically connected with two adjacent strings of back contact battery strings to connect the two strings of back contact battery strings in series.
2. The full series side outlet laminated pv building integration assembly according to claim 1, wherein the upper tempered glass (S1), the lower tempered glass (S5) are super white float glass or colored glass.
3. The full series side outlet laminated photovoltaic building integrated assembly as claimed in claim 2, wherein the tail of the previous small cell (S30) overlaps the head of the next small cell (S30) along the length of the back contact cell string.
4. The full-series side-outlet laminated photovoltaic building integrated assembly according to claim 2, wherein the width of overlap between each two small cells (S30) is 0.1mm to 0.8 mm.
5. The full series side outlet laminated photovoltaic building integrated assembly according to claim 2, wherein the small cell (S30) is a one-piece cell, or 1/N cell, N being an integer greater than 1.
6. The laminated photovoltaic building integrated assembly of full series side outlet line according to claim 2, characterized in that the small cell sheet (S30) is selected from at least one of IBC, TBC, HIT, HJT back junction back contact cell.
7. The full-series side-outlet laminated photovoltaic building integrated assembly according to any one of claims 1 to 6, further comprising a hollow layer and an auxiliary toughened glass layer, wherein the hollow layer and the auxiliary toughened glass layer are sequentially arranged at the bottom of the lower toughened glass layer (S5).
8. The full-series side-outlet laminated photovoltaic building integrated assembly according to claim 7, further comprising an outer packaging adhesive film and an outer toughened glass layer, wherein the outer packaging adhesive film and the outer toughened glass layer are sequentially arranged at the bottom of the secondary toughened glass layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121473337.6U CN214956906U (en) | 2021-06-30 | 2021-06-30 | Laminated photovoltaic building integrated assembly with fully-serial side outgoing lines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121473337.6U CN214956906U (en) | 2021-06-30 | 2021-06-30 | Laminated photovoltaic building integrated assembly with fully-serial side outgoing lines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214956906U true CN214956906U (en) | 2021-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121473337.6U Active CN214956906U (en) | 2021-06-30 | 2021-06-30 | Laminated photovoltaic building integrated assembly with fully-serial side outgoing lines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214956906U (en) |
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2021
- 2021-06-30 CN CN202121473337.6U patent/CN214956906U/en active Active
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Effective date of registration: 20240212 Address after: 810008 No. 43, Wusi West Road, Chengxi District, Xining City, Qinghai Province Patentee after: QINGHAI HUANGHE HYDROPOWER DEVELOPMENT Co.,Ltd. Country or region after: China Address before: 810007 No. 4, Jinsi Road, Dongchuan Industrial Park, Xining City, Qinghai Province Patentee before: Xining solar power branch of Qinghai upper Yellow River Hydropower Development Co.,Ltd. Country or region before: China Patentee before: Xi'an solar power branch of Qinghai upper Yellow River Hydropower Development Co.,Ltd. Patentee before: HUANGHE HYDROPOWER DEVELOPMENT Co.,Ltd. Patentee before: QINGHAI HUANGHE HYDROPOWER DEVELOPMENT Co.,Ltd. |