CN214959442U - Photovoltaic module circuit and photovoltaic module junction box thereof - Google Patents
Photovoltaic module circuit and photovoltaic module junction box thereof Download PDFInfo
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- CN214959442U CN214959442U CN202022546801.1U CN202022546801U CN214959442U CN 214959442 U CN214959442 U CN 214959442U CN 202022546801 U CN202022546801 U CN 202022546801U CN 214959442 U CN214959442 U CN 214959442U
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- photovoltaic module
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 238000009434 installation Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 238000010248 power generation Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008092 positive effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013589 supplement Substances 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
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- Photovoltaic Devices (AREA)
Abstract
The utility model relates to a photovoltaic module circuit and photovoltaic module terminal box thereof, a photovoltaic module circuit, including the multiunit photovoltaic module terminal box that concatenates in proper order, the diode has been arranged to both sides in every group photovoltaic module terminal box, this photovoltaic module circuit current through with one side diode input, through opposite side diode output, photovoltaic module's photovoltaic cell piece concatenates the outside in photovoltaic module terminal box both sides diode respectively.
Description
Technical Field
The utility model relates to a photovoltaic module, concretely relates to photovoltaic module circuit and photovoltaic module terminal box thereof.
Background
Distributed power stations have the following advantages: the power station is independent, and the user can be controlled by oneself, and safe reliability is higher. The distributed power station can make up the deficiency of the safety and stability of a large power grid and is an indispensable supplement for a centralized power station; the distributed power generation and transmission loss (in a power station) is low, and the civil construction and the installation are flexible; the peak regulation performance of the distributed power station is good, the start and stop are rapid, and the full-automatic operation and maintenance is convenient to realize.
At present, distributed power stations are mainly installed in industrial and commercial plants and household roofs, and often have different inclination angles and even different orientations. Limited by the installation environment, the use of conventional ground power stations and their (photovoltaic) assembly (electrical connection) installation solutions may have the following disadvantages: 1. the inverter resources are wasted, the inverter loading capacity can not reach the rated power of the inverter, and the inversion efficiency is low; (photovoltaic) module power waste: the actual operation of the (photovoltaic) assemblies in different directions or different installation angles is limited by illumination, and the operation cannot reach the maximum power, so that the power waste is caused; 3. when the photovoltaic component is installed, because the angles are not consistent, the mismatch effect exists when the photovoltaic component is installed in the same group of strings of the inverter, and the actual generating efficiency is lost.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a photovoltaic module circuit and photovoltaic module terminal box thereof, simple structure solves the problem among the background art.
In order to realize the above purpose, the utility model discloses a technical scheme be: the utility model provides a photovoltaic module circuit, includes the multiunit photovoltaic module terminal box that concatenates in proper order, and the diode has been arranged to both sides in every photovoltaic module terminal box of group, and this photovoltaic module circuit current is through same one side diode input, through opposite side diode output, and photovoltaic module's photovoltaic cell piece is connected in series respectively in the outside of photovoltaic module terminal box both sides diode.
Furthermore, the photovoltaic module comprises three groups of photovoltaic module junction boxes which are sequentially connected in series, and diodes on the same side are connected in series through a bus bar.
Still further, the current input end and the current output end of the photovoltaic module circuit are connected with other photovoltaic modules or inverters in series.
The utility model provides a photovoltaic module terminal box comprises first photovoltaic module terminal box, second photovoltaic module terminal box, third photovoltaic module terminal box of arranging that concatenate in proper order, the both sides of third photovoltaic module terminal box set up the lead-out wire, the lead-out wire concatenate other photovoltaic module or dc-to-ac converter, the bilateral symmetry in first photovoltaic module terminal box, second photovoltaic module terminal box, the third photovoltaic module terminal box has the diode, lie in the diode parallel position in first photovoltaic module terminal box, second photovoltaic module terminal box, the third photovoltaic module terminal box and set up the copper sheet terminal, the busbar connect between the copper sheet terminal of adjacent photovoltaic module terminal box.
Furthermore, the bus bar is welded on the copper sheet terminal.
The technical effects of the utility model reside in that: the utility model discloses simple structure through the photovoltaic cell piece, takes the full series scheme to realize that photovoltaic module voltage is higher than conventional photovoltaic module, can reduce photovoltaic module operating current through the photovoltaic cell piece to a certain extent for a few photovoltaic module establish ties can (usually 2-4 pieces) reach dc-to-ac converter (usually little contrary) MPPT starting voltage. Compared with the conventional photovoltaic module system, the photovoltaic module system has the following positive effects: 1. the operation current of the photovoltaic module is reduced, the operation temperature of the photovoltaic module is reduced, and the single-watt power generation is improved; 2. the photovoltaic modules are flexibly installed, the number of series-connected inverters is reduced after the photovoltaic modules are matched with the micro inverters, and the photovoltaic modules can be installed at different angles and in different directions without mismatch effect; 3. the installation quantity of the photovoltaic modules can be regulated and controlled, and the maximum quantity of photovoltaic modules can be installed according to the actual situation of a site without being limited by the installation quantity of the traditional inverters.
Drawings
Fig. 1 is a circuit structure diagram of a photovoltaic module of the present invention;
fig. 2 is a layout structure diagram of the junction box of the photovoltaic module of the present invention;
fig. 3 is the internal structure view of the photovoltaic module junction box of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely 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 work belong to the protection scope of the present invention.
Referring to the drawings, in view of the deficiencies in the background art, the present invention relates to a novel (photovoltaic) module circuit and a photovoltaic module junction box therefor.
Specifically, the method comprises the following steps: a photovoltaic module circuit comprises a plurality of groups of photovoltaic module junction boxes 20 which are connected in series in sequence, diodes 40 are arranged on two sides in each group of photovoltaic module junction boxes 20, current of the photovoltaic module circuit is input through the diodes 40 on the same side and output through the diodes 40 on the other side, and photovoltaic cells 10 of the photovoltaic module are connected in series to the outer sides of the diodes 40 on two sides of the photovoltaic module junction boxes 20 respectively.
Further, the photovoltaic module comprises three groups of photovoltaic module junction boxes 20 which are sequentially connected in series, and the diodes 40 on the same side are connected in series through the bus bar 30.
Still further, the current input end and the current output end of the photovoltaic module circuit are connected with other photovoltaic modules or inverters in series.
A photovoltaic module junction box 20 is composed of a first photovoltaic module junction box 21, a second photovoltaic module junction box 22 and a third photovoltaic module junction box 23 which are sequentially connected in series, outgoing lines 23a are arranged on two sides of the third photovoltaic module junction box 23, the outgoing lines 23a are connected with other photovoltaic modules or inverters in series, diodes 40 are symmetrically arranged on two sides in the first photovoltaic module junction box 21, the second photovoltaic module junction box 22 and the third photovoltaic module junction box 23, copper sheet terminals 50 are arranged in the first photovoltaic module junction box 21, the second photovoltaic module junction box 22 and the third photovoltaic module junction box 23 in parallel to the diodes 40, and bus bars 30 are connected between the copper sheet terminals 50 of the adjacent photovoltaic module junction boxes 20.
Further, the bus bar 30 is soldered to the copper tab terminal 50.
The utility model discloses the principle is: through photovoltaic cell piece (section) 10, adopt the full series scheme to realize that photovoltaic module voltage is higher than conventional (photovoltaic) subassembly, can reduce (photovoltaic) subassembly operating current through (photovoltaic cell piece 10) section to a certain extent for a few photovoltaic module series connection can (usually 2-4) reach inverter (usually little contrary) MPPT starting voltage. Compared with the conventional (photovoltaic) assembly system, the system has the following positive effects: the running current of the (photovoltaic) assembly is reduced, the running temperature of the (photovoltaic) assembly is reduced, and the single-watt power generation is improved; the (photovoltaic) assemblies are flexibly installed, the number of series-connected inverters is reduced after the micro inverters are adapted, and the inverters can be installed at different angles and in different directions without mismatch effect; the installation number of the (photovoltaic) assemblies can be regulated and controlled, and the maximum number of (photovoltaic) assemblies can be installed according to the actual situation of a site without being limited by the installation number of the traditional inverters.
As shown in the circuit of fig. 1, the utility model relates to a photovoltaic module circuit includes: the photovoltaic module comprises a battery circuit formed by connecting upper and lower photovoltaic battery slices 10 in series, a photovoltaic module junction box 20 is connected in series between the upper and lower photovoltaic battery circuits, the photovoltaic module junction boxes 20 are connected in series through a bus bar 30, a diode 40 is arranged in the photovoltaic module junction box 20, and the photovoltaic battery (slice) 10 achieves the high-voltage low-current condition through slicing and connecting in series. The main circuit of the (photovoltaic) component is in a series structure, and each series of circuits is connected with a diode 40 in parallel for protection. The existing parallel structure is improved into a series structure, and the working temperature of the photovoltaic module junction box 20 is directly reduced. When the hot spot effect occurs, the diode 40 starts to shield the hot spot (photovoltaic) cell 10, and the whole (photovoltaic) assembly still has the theoretical power output of 5/6, so that the operation under the hot spot condition is advantageous compared with the operation under the hot spot condition of a conventional (photovoltaic) assembly, a half (photovoltaic) assembly, a laminated assembly and the like.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A photovoltaic module circuit, comprising: the photovoltaic module comprises a plurality of groups of photovoltaic module junction boxes (20) which are connected in series in sequence, diodes (40) are arranged on two sides in each group of photovoltaic module junction boxes (20), the circuit current of the photovoltaic module is input through the diodes (40) on the same side and output through the diodes (40) on the other side, and photovoltaic cells (10) of the photovoltaic module are connected in series to the outer sides of the diodes (40) on two sides of the photovoltaic module junction boxes (20) respectively.
2. A photovoltaic module circuit according to claim 1, wherein: the photovoltaic module comprises three groups of photovoltaic module junction boxes (20) which are sequentially connected in series, and diodes (40) on the same side are connected in series through a bus bar (30).
3. A photovoltaic module circuit according to claim 2, wherein: the current input end and the current output end of the photovoltaic module circuit are connected with other photovoltaic modules or inverters in series.
4. A photovoltaic module terminal box which characterized in that: the photovoltaic module comprises a first photovoltaic module junction box (21), a second photovoltaic module junction box (22) and a third photovoltaic module junction box (23) which are sequentially connected in series, leading-out wires (23a) are arranged on two sides of the third photovoltaic module junction box (23), the leading-out wires (23a) are connected in series with other photovoltaic modules or inverters, diodes (40) are symmetrically arranged on two sides in the first photovoltaic module junction box (21), the second photovoltaic module junction box (22) and the third photovoltaic module junction box (23), copper sheet terminals (50) are arranged in the first photovoltaic module junction box (21), the second photovoltaic module junction box (22) and the third photovoltaic module junction box (23) in parallel with the diodes (40), and bus bars (30) are connected between the copper sheet terminals (50) of the adjacent photovoltaic module junction boxes (20).
5. The photovoltaic module junction box of claim 4, wherein: the bus bar (30) is welded on the copper sheet terminal (50).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022546801.1U CN214959442U (en) | 2020-11-06 | 2020-11-06 | Photovoltaic module circuit and photovoltaic module junction box thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022546801.1U CN214959442U (en) | 2020-11-06 | 2020-11-06 | Photovoltaic module circuit and photovoltaic module junction box thereof |
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| Publication Number | Publication Date |
|---|---|
| CN214959442U true CN214959442U (en) | 2021-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022546801.1U Active CN214959442U (en) | 2020-11-06 | 2020-11-06 | Photovoltaic module circuit and photovoltaic module junction box thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116346027A (en) * | 2023-03-03 | 2023-06-27 | 宁波博朋电子有限责任公司 | Junction box applied to ultra-high power photovoltaic module |
-
2020
- 2020-11-06 CN CN202022546801.1U patent/CN214959442U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116346027A (en) * | 2023-03-03 | 2023-06-27 | 宁波博朋电子有限责任公司 | Junction box applied to ultra-high power photovoltaic module |
| CN116346027B (en) * | 2023-03-03 | 2023-12-12 | 宁波博朋电子有限责任公司 | Junction box applied to ultra-high power photovoltaic module |
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| CP03 | Change of name, title or address |
Address after: 230000 No.1 Yaoyuan Road, Luyang District, Hefei City, Anhui Province Patentee after: Daheng Energy Co.,Ltd. Address before: 230000, 1st to 3rd floors, No. 6 # A, Xinglu Science and Technology Industrial Park, Industrial Park, Luyang District, Hefei City, Anhui Province, at the intersection of Shiyu Road and Lingxi Road Patentee before: ANHUI DAHENG ENERGY TECHNOLOGY Co.,Ltd. |
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