CN109904240B - Integrated intelligent photovoltaic module structure - Google Patents
Integrated intelligent photovoltaic module structure Download PDFInfo
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- CN109904240B CN109904240B CN201910140148.8A CN201910140148A CN109904240B CN 109904240 B CN109904240 B CN 109904240B CN 201910140148 A CN201910140148 A CN 201910140148A CN 109904240 B CN109904240 B CN 109904240B
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- battery
- photovoltaic module
- switch
- bypass switch
- integrated intelligent
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- 239000011521 glass Substances 0.000 claims abstract description 15
- 239000010410 layer Substances 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 16
- 239000012790 adhesive layer Substances 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000012858 packaging process Methods 0.000 abstract description 3
- 238000004026 adhesive bonding Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
Classifications
-
- 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
Landscapes
- Photovoltaic Devices (AREA)
Abstract
The invention discloses an integrated intelligent photovoltaic module structure, wherein a multilayer structure consisting of a glass plate, a battery layer, an adhesive bonding layer and a back film layer is arranged in a rectangular module frame, the battery layer comprises N battery packs paved on the inner surface of the glass plate and a bus belt arranged on the outer side of one end of each battery pack, each bus belt is provided with N switch parts which are correspondingly connected in parallel with the corresponding battery packs, the N switch parts are connected with N+1 bus sections to form a bus belt, a bypass switch piece is embedded between adjacent bus sections in each switch part, and the bypass switch piece is a unidirectional conduction device, wherein N is more than or equal to 1. According to the invention, the bypass switch piece is embedded between adjacent bus sections to form the bus belt, and the bypass switch piece is connected with the corresponding battery pack in parallel to replace the existing photovoltaic junction box, so that the packaging process and the structure of the photovoltaic assembly are simplified, the problem that each battery pack is led into the junction box through a lead in the prior art is solved, the resources are saved, and the manufacturing cost is reduced.
Description
Technical Field
The invention relates to the field of photovoltaic modules, in particular to an integrated intelligent photovoltaic module structure.
Background
Solar photovoltaic cells are a new type of cell that converts the light energy of the sun directly into electrical energy. Silicon photovoltaic cells based on silicon are currently commonly used, including monocrystalline silicon, polycrystalline silicon and amorphous silicon photovoltaic cells. According to the application requirements, the photovoltaic cells are combined to form a module which can be used as a power supply by packaging a plurality of photovoltaic cells with certain rated output power and output voltage. When a photovoltaic cell in a series branch of the photovoltaic module is shaded and has no solar irradiation, the shaded photovoltaic cell consumes energy generated by other photovoltaic cells with light irradiation and generates heat, and the situation is called a hot spot effect. The hot spot effect can seriously damage the photovoltaic cell and even affect the entire photovoltaic module. In order to prevent the photovoltaic cells from being damaged due to the hot spot effect, a bypass diode is generally connected in parallel between the positive electrode and the negative electrode of the photovoltaic cell string, and the parallel photovoltaic cells are protected by using the conduction function of the bypass diode.
In the prior art, a photovoltaic junction box is generally used for protecting a photovoltaic cell string, a bypass diode is arranged in the photovoltaic junction box, the possibility of disconnection of the photovoltaic cell string is reduced, and the reliability and the power generation efficiency of a photovoltaic module are improved. However, the prior art has the following disadvantages: the photovoltaic junction box is externally connected to the back of the photovoltaic module, more working procedures are needed for manufacturing and packaging, and labor and material cost are high. The bypass diode in the photovoltaic junction box has larger reverse leakage current and larger heating loss, and not only a heat dissipation structure is needed to be additionally arranged, but also the photovoltaic power generation efficiency is affected. The bypass diode is conducted to protect hot spots, the temperature rises, reverse leakage current is rapidly increased, and reverse breakdown failure is easy to occur. The photovoltaic junction box on the photovoltaic module is used for converging each group of photovoltaic cells together, so that the external lead and the converging belt are longer, the material consumption is large, the cost is high, the connecting between the converging belt and the photovoltaic cells is complex, and the whole photovoltaic module has various manufacturing procedures and high manufacturing cost. The existing photovoltaic junction box has no monitoring alarm function, cannot accurately monitor the fault position in real time when a photovoltaic module has a problem, is time-consuming and labor-consuming to search manually, and cannot acquire data.
Disclosure of Invention
Aiming at the defects of complex manufacturing and packaging, high manufacturing cost, high heating loss, easiness in diode breakdown, longer external leads and bus bars, single function and the like caused by the external photovoltaic junction box in the existing photovoltaic module structure, the application provides an integrated intelligent photovoltaic module structure with reasonable structure, which can simplify manufacturing procedures and packaging structures, reduce production cost, solve the heating problem, improve the reliability of a bypass switch, simplify the module connecting structure and realize multifunctional and intelligent expansion.
The technical scheme adopted by the invention is as follows:
An integrated intelligent photovoltaic module structure is characterized in that a multilayer structure consisting of a glass plate, a battery layer, a cementing layer and a back film layer is arranged in a rectangular module frame, the battery layer comprises N battery packs paved on the inner surface of the glass plate and a bus bar arranged on the outer side of one end of each battery pack, each bus bar is provided with N switch parts which are correspondingly connected in parallel with the battery packs, N+1 bus bars are connected with the N switch parts to form a bus bar, a bypass switch piece is embedded between adjacent bus bars in each switch part, and the bypass switch piece is a unidirectional conduction device, wherein N is more than or equal to 1.
As a further improvement of the above technical scheme:
the bypass switch piece is welded on two adjacent bus sections.
The adjacent bus section ends in the switch section are in a shape of a Chinese character 'ji', and the bypass switch piece is embedded between two Chinese character 'ji' shaped structures.
The bypass switch piece is in a sheet shape, and the bottom of the bypass switch piece is welded with the lower steps of two adjacent Chinese character 'ji' -shaped structures through a plurality of welding points.
And filling materials are arranged between the end parts of two adjacent confluence sections, filling materials are arranged in the bottom notches of the U-shaped structures, and filling materials are arranged above the confluence sections on two sides of the bypass switch piece.
The bus belt is a strip-shaped structure distributed along a straight line, and N switch parts are component parts of the bus belt.
Each battery pack is formed by connecting two battery strings in series, and each battery string is formed by connecting M battery pieces in series, wherein M is more than or equal to 1.
Each switch part is connected with two ends of a series circuit formed by two battery strings in the corresponding battery pack in parallel.
The bypass switch part adopts a MOS chip switch, or a serial circuit formed by the MOS chip switch and the RFID chip, or a circuit formed by the MOS chip switch, the RFID chip and the detection sensor.
The adhesive layer adheres the glass plate, the battery layer and the back film layer into a multi-layer structure whole.
The beneficial effects of the invention are as follows:
According to the invention, the bypass switch piece is embedded between adjacent bus sections to form the bus belt, and the bypass switch piece is connected with the corresponding battery pack in parallel to replace the existing photovoltaic junction box, so that the packaging process and the structure of the photovoltaic assembly are simplified, the problem that each battery pack is led into the junction box through a lead in the prior art is solved, the resources are saved, and the manufacturing cost is reduced. According to the invention, the hot spot protection of the battery pack can be realized only through the bus-bar, and the photovoltaic module is quickly manufactured through the lamination process, so that the manufacturing process of the photovoltaic module is greatly changed. The bypass switch piece is embedded in the notch formed by the U-shaped structure of the adjacent bus sections and welded with the adjacent bus sections, and the filling materials are arranged on the two sides of the bypass switch piece to firmly embed the bypass switch piece, so that the function of the bypass switch piece is realized, the bypass switch piece is protected, the integral structure of the bus belt is not changed, and the integral packaging process of the photovoltaic module is not influenced. The bypass switch piece utilizes the busbar to dissipate heat, does not need a heat dissipation copper sheet in the junction box in the prior art, and improves the reliability and the photovoltaic power generation efficiency of the photovoltaic module. The end parts of the adjacent bus sections adopt a shape like a Chinese character 'ji', and the fixing of the bus belt and the connection of the bypass switch piece are firmer by matching with the use of filling materials, so that the circuit connection is more reliable, and the bypass switch piece is more fully contacted with the bus sections.
The bypass switch piece provided by the invention integrates the MOS chip switch, and achieves the effects of low energy consumption, high efficiency, strong high-temperature reverse bias capability, difficult breakdown and the like. According to the invention, the RFID chip is additionally arranged on the basis of the MOS chip switch to form the integrated chip switch, so that the on state of each bypass switch piece can be accurately positioned and intelligently monitored. The invention can also carry out functional expansion, and is additionally provided with one or more detection sensors to realize the monitoring of the temperature, current, voltage and other data of the photovoltaic module and improve the management and maintenance capability of the photovoltaic power station.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a front view of the bus bar of the present invention.
Fig. 3 is a top view of fig. 2.
Fig. 4 is an enlarged view of a portion a of fig. 2.
Fig. 5 is a top view of fig. 4.
Fig. 6 is a cross-sectional view of section B-B of fig. 5.
Fig. 7 is a schematic view of the end of the bus bar section.
Fig. 8 is a top view of fig. 7.
In the figure: 1. a component frame; 2. a battery pack; 3. a battery string; 4. a battery sheet; 5. a sink belt; 6. a switch section; 7. a confluence section; 8. a bypass switch member; 9. a filler material; 10. a structure of a Chinese character 'ji'; 11. a lower step surface; 12. welding points; 13. and (5) component leads.
Detailed Description
The following describes specific embodiments of the present invention with reference to the drawings.
As shown in fig. 1 to 3, the integrated intelligent photovoltaic module structure of the present invention is provided with a multilayer structure in a rectangular module frame 1, wherein the multilayer structure comprises a glass plate, a battery layer, a cementing layer and a back film layer. Four sides of multilayer structure and the gomphosis of subassembly frame 1, and the glass board is located outermost, and the battery layer is including tiling N group battery 2 that set up on glass board internal surface, and every group battery 2 is established ties by two battery strings 3 and is constituted by M battery piece 4 series connection. The value of N, M is adapted to the size of the glass plate, and is determined according to the design requirement and the use requirement of the photovoltaic module, and in fig. 1, n=3 and m=6. All the cells 4 on the glass plate are distributed in a matrix on the inner surface of the glass plate, and each cell string 3 is distributed along a straight line. A busbar 5,N having N switch portions 6 is provided on the outside of one end of the battery pack 2 in the side length direction, and the N switch portions 6 are connected to n+1 busbar segments 7 to form one busbar 5. The bus bar 5 is perpendicular to each battery string 3, one end of each battery string 3 is connected to the bus bar 5, and the other end is connected in series with the corresponding battery strings 3 in the same group. The switch parts 6 are arranged in one-to-one correspondence with the battery packs 2, and two battery strings 3 which are mutually connected in series in the battery packs 2 are respectively connected to the bus bars 5 at two ends of the switch parts 6, namely, two ends of a series circuit formed by the switch parts 6 and the two battery strings 3 are mutually connected in parallel. The inside of the switch part 6 is connected through a bypass switch piece 8, and the bypass switch piece 8 is a unidirectional conduction device. The bus section 7 is made of a metal such as copper. The two outer ends of the bus bar 5 are respectively connected with a component lead 13, and the component lead 13 extends outwards and can be connected with electric equipment or other photovoltaic components.
As shown in fig. 4 to 8, the end shape of the adjacent bus bar section 7 in each switch section 6 is a few-letter shape. A filling material 9 is arranged between the ends of the two bus-sections 7, and the filling material 9 is arranged in the bottom recess of the several-shaped structure 10. A bypass switch piece 8 is embedded between the two U-shaped structures 10 of the bus sections 7, the bypass switch piece 8 is in a sheet shape, the bottom of the bypass switch piece is welded with the lower step surfaces 11 of the two adjacent U-shaped structures 10 through a plurality of welding points 12, namely, the bypass switch piece 8 is used as a medium to connect the U-shaped bus sections 7 at the two ends. A filling material 9 is arranged above the confluence sections 7 on both sides of the bypass switch element 8, so that the upper surfaces on both sides of the bypass switch element 8 form smooth slopes, and the bypass switch element 8 is embedded in the filling material 9. The filling material 9 is an insulating material at all the positions. The adhesive layer is arranged on the surface of the battery layer and penetrates into the gap of the battery layer, and a back film layer is flatly paved on the surface of the adhesive layer. The adhesive layer is preferably EVA adhesive. The adhesive layer adheres the glass plate, the battery layer and the back film layer into a multi-layer structure whole.
The bypass switch element 8 may have different structures to realize different functions, for example, the bypass switch element 8 may be a MOS chip switch. The MOS chip switch is made into a sheet structure, is embedded between the two U-shaped bus sections 7 of each switch part 6, and the bottom is respectively welded with the lower step surface 11 of the corresponding U-shaped structure 10 through two groups of welding points 12.
For another example, the bypass switch 8 employs an integrated chip switch. The integrated chip switch adopts a series circuit formed by an MOS chip switch and an RFID chip. The integrated chip switch is embedded between the two U-shaped bus sections 7 of each switch part 6, and the bottom is welded on the two U-shaped bus sections 7.
For another example, the integrated chip switch adopts a circuit composed of a MOS chip switch, an RFID chip and a detection sensor. The detection sensor may be one or more, such as a temperature sensor. The RFID chip is preferably an active RFID chip capable of transmitting an ID to the receiver when the bypass switch 8 is turned on. The active RFID chip is powered by the voltage of the bypass switch 8 in the on state, without the need for an additional external battery.
The bypass switch part 8 is internally integrated with the MOS chip switch, and the chip switch is adopted to replace a diode in the junction box, so that the effects of low energy consumption, high efficiency, strong high-temperature reverse bias capability, difficult breakdown and the like are realized. According to the invention, the RFID chip is additionally arranged on the basis of the MOS chip switch to form the integrated chip switch, the integrated chip switch is embedded in the bus bar 5, the conduction state of each bypass switch piece 8 in the photovoltaic module is monitored, the conduction state of each bypass switch piece 8 is obtained in real time, the functions of accurate positioning, intelligent monitoring and the like are realized, and the problems of low manual searching efficiency, high cost and the like are solved. In addition, the active RFID chip can skillfully utilize the voltage of the bypass switch element 8 under conduction, and an external battery is not required to be added, so that the method is more convenient. According to the invention, on the basis that the MOS chip switch and the RFID chip form an integrated chip switch, one or more sensors are additionally arranged, so that the monitoring of the temperature, current, voltage and other data of the photovoltaic module is realized, and the management and maintenance capability of the photovoltaic power station is improved.
The above description is illustrative of the invention and is not intended to be limiting, and the invention may be modified in any form without departing from the spirit of the invention.
Claims (10)
1. An integrated intelligent photovoltaic module structure which is characterized in that: set up the multilayer structure of constituteing by glass board, battery layer, cementing layer and notacoria layer in rectangle subassembly frame (1), the battery layer is including laying the confluence area (5) in N group battery (2) and group battery (2) one end outsides of glass board internal surface, confluence area (5) have N with group battery (2) correspond parallelly connected switch portion (6), N+1 confluence section (7) are connected to N switch portion (6) constitutes confluence area (5), inlay bypass switch piece (8) between adjacent confluence section (7) in switch portion (6), bypass switch piece (8) are unidirectional conduction device, wherein N is greater than or equal to 1.
2. The integrated intelligent photovoltaic module structure of claim 1, wherein: the bypass switch element (8) is welded to two adjacent bus sections (7).
3. The integrated intelligent photovoltaic module structure of claim 1, wherein: the adjacent bus sections (7) in the switch section (6) are shaped like a Chinese character 'ji', and the bypass switch element (8) is embedded between two structures (10) shaped like a Chinese character 'ji'.
4. The integrated intelligent photovoltaic module structure of claim 3, wherein: the bypass switch piece (8) is in a sheet shape, and the bottom is welded with the lower step surfaces (11) of two adjacent Chinese character 'ji' -shaped structures (10) through a plurality of welding points (12).
5. The integrated intelligent photovoltaic module structure of claim 3, wherein: a filling material (9) is arranged between the end parts of two adjacent bus sections (7), the filling material (9) is arranged in a bottom notch of a U-shaped structure (10), and the filling material (9) is arranged above the bus sections (7) on two sides of the bypass switch piece (8).
6. The integrated intelligent photovoltaic module structure of claim 1, wherein: the busbar (5) has a strip-shaped structure which is distributed along a straight line, and N switch parts (6) are component parts of the busbar (5).
7. The integrated intelligent photovoltaic module structure of claim 1, wherein: each battery pack (2) is formed by connecting two battery strings (3) in series, and each battery string (3) is formed by connecting M battery pieces (4) in series, wherein M is more than or equal to 1.
8. The integrated intelligent photovoltaic module structure of claim 7, wherein: each switch part (6) is connected in parallel with both ends of a series circuit formed by two battery strings (3) in the corresponding battery pack (2).
9. The integrated intelligent photovoltaic module structure of claim 1, wherein: the bypass switch component (8) adopts a MOS chip switch, or a serial circuit formed by the MOS chip switch and the RFID chip, or a circuit formed by the MOS chip switch, the RFID chip and the detection sensor.
10. The integrated intelligent photovoltaic module structure of claim 1, wherein: the adhesive layer adheres the glass plate, the battery layer and the back film layer into a multi-layer structure whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910140148.8A CN109904240B (en) | 2019-02-26 | 2019-02-26 | Integrated intelligent photovoltaic module structure |
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| CN201910140148.8A CN109904240B (en) | 2019-02-26 | 2019-02-26 | Integrated intelligent photovoltaic module structure |
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| CN109904240A CN109904240A (en) | 2019-06-18 |
| CN109904240B true CN109904240B (en) | 2024-06-04 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110265488B (en) * | 2019-06-26 | 2021-03-30 | 重庆西南集成电路设计有限责任公司 | Photovoltaic cell assembly with embedded photovoltaic bypass switch |
| CN110190146A (en) * | 2019-07-05 | 2019-08-30 | 上海晶澳太阳能科技有限公司 | Solar battery string group and solar cell module |
| CN115966622A (en) * | 2021-09-28 | 2023-04-14 | 黄耀纶 | Photovoltaic cell assembly and manufacturing method thereof |
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| KR20120134810A (en) * | 2011-06-03 | 2012-12-12 | 엘지전자 주식회사 | Photovoltaic module |
| CN105489687A (en) * | 2015-12-23 | 2016-04-13 | 南通美能得新能源科技股份有限公司 | Solar cell module with adjustable electrical performance parameters |
| CN105720912A (en) * | 2016-05-03 | 2016-06-29 | 闪耀魅力有限公司 | Novel solar photovoltaic module junction box |
| CN205490390U (en) * | 2015-12-11 | 2016-08-17 | 奥特斯维能源（太仓）有限公司 | Photovoltaic module with power optimization function |
| CN107302343A (en) * | 2017-06-22 | 2017-10-27 | 广州市瑞峰电力科技有限公司 | Photovoltaic power generation plate |
| CN108258065A (en) * | 2018-03-09 | 2018-07-06 | 天合光能股份有限公司 | Photovoltaic cell assembly with integrated circuit board |
| CN209199948U (en) * | 2019-02-26 | 2019-08-02 | 江苏禾木传感技术有限公司 | Integrated intelligence photovoltaic module structure |
-
2019
- 2019-02-26 CN CN201910140148.8A patent/CN109904240B/en active Active
Patent Citations (7)
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|---|---|---|---|---|
| KR20120134810A (en) * | 2011-06-03 | 2012-12-12 | 엘지전자 주식회사 | Photovoltaic module |
| CN205490390U (en) * | 2015-12-11 | 2016-08-17 | 奥特斯维能源（太仓）有限公司 | Photovoltaic module with power optimization function |
| CN105489687A (en) * | 2015-12-23 | 2016-04-13 | 南通美能得新能源科技股份有限公司 | Solar cell module with adjustable electrical performance parameters |
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