CN108281499B - Novel photovoltaic cell assembly with circuit design - Google Patents
Novel photovoltaic cell assembly with circuit design Download PDFInfo
- Publication number
- CN108281499B CN108281499B CN201810195034.9A CN201810195034A CN108281499B CN 108281499 B CN108281499 B CN 108281499B CN 201810195034 A CN201810195034 A CN 201810195034A CN 108281499 B CN108281499 B CN 108281499B
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- Prior art keywords
- battery string
- battery
- photovoltaic cell
- assembly
- parallel
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- 239000011159 matrix material Substances 0.000 claims abstract description 11
- 238000003466 welding Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 238000010030 laminating Methods 0.000 abstract description 2
- 210000004027 cell Anatomy 0.000 description 33
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/044—PV modules or arrays of single PV cells including bypass diodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
-
- 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 invention discloses a photovoltaic cell assembly with a novel circuit design, which comprises a photovoltaic cell matrix, wherein the photovoltaic cell matrix comprises two parallel battery string units, each battery string unit comprises m battery string groups connected in series and m bypass diodes connected with the battery string groups in parallel in a one-to-one correspondence manner, and each battery string group comprises two battery strings which are arranged in parallel and connected in series, wherein m is an integer more than or equal to 1. The invention can be applied to a half-piece battery piece assembly or a battery assembly with any size, and can also be applied to a conventional whole-piece battery piece assembly, so that each battery string is connected with a shunt diode in parallel, and compared with the conventional photovoltaic assembly, the invention can effectively protect the battery piece when the assembly shields and spots, improve the output power and the generating capacity of the assembly, reduce the laminating process of the assembly and improve the production efficiency of the assembly.
Description
Technical Field
The invention belongs to the technical field of photovoltaic cells, and particularly relates to a photovoltaic cell component with a novel circuit design.
Background
During operation of the solar module, if a shadow obscures one or more solar cells, the output of the other cells in series with the shadow cell will be consumed by the cell, and this energy consumption will cause local breakdown of the PN junction of the cell and cause local overheating, which is a hot spot effect. In order to prevent the solar cells from being damaged due to the hot spot effect, a common solution is to add bypass diodes on the basis of an original circuit, and when light is not blocked, each diode is in reverse bias, and each cell is generating electric energy. When one battery is blocked, the generation of electric energy is stopped to become a high-resistance resistor, and other batteries are simultaneously promoted to be reversely biased, so that the diode connected with the two ends of the battery is conducted, and the current originally flowing through the blocked battery is shunted by the diode.
In the prior art, a solar half-cell photovoltaic module comprises a plurality of cell string groups, each cell string group comprises two cell strings which are arranged in parallel and connected in series, a connecting mode that two cell string groups are connected in parallel and share one diode is generally adopted, for example, the existing photovoltaic module shown in fig. 1 only has 3 diodes, when most of local shielding occurs in the module, the output power of the module can be reduced compared with the output power of the module of a conventional whole cell, so that the hidden danger is brought to practical application, the junction box is the same as the conventional module, 3 split junction boxes with the diodes are adopted, and when the bus bar is led out, the bus bar junction terminal is manually bent and aligned after being inserted into a bus bar hole of the junction box, and then the bus bar junction terminal is manually bent and bonded.
Disclosure of Invention
In order to solve the problems, the invention provides a photovoltaic cell assembly with a novel circuit design, which improves the power output rate of the photovoltaic cell assembly.
The technical scheme of the invention is as follows: the photovoltaic battery assembly comprises a photovoltaic battery matrix, wherein the photovoltaic battery matrix comprises two parallel battery string units, each battery string unit comprises m battery string groups connected in series and m bypass diodes connected with the battery string groups in parallel in a one-to-one correspondence mode, each battery string group comprises two battery strings which are arranged in parallel and connected in series, and m is an integer which is more than or equal to 1.
The invention relates to a photovoltaic battery component with a novel circuit design, which is characterized in that a battery string unit is obtained by connecting battery string groups in series, then two battery string units are connected in parallel, and each battery string group is connected with a bypass diode in parallel in a one-to-one correspondence manner.
The bypass diode is connected in various modes, and preferably comprises an integrated circuit board, wherein the integrated circuit board is positioned between two battery string units, battery string bonding pads which are in welding fit with interconnection bars on the battery strings are arranged at corresponding positions of the integrated circuit board and the battery string units at two sides, each battery string group is connected with one bypass diode in parallel in a one-to-one correspondence mode, the anode and the cathode of the bypass diode are respectively connected with the two corresponding battery string bonding pads in the battery string group, so that the bypass diode is connected with the battery string group in parallel, and positive electrode bonding pads connected with an anode lead-out wire of a photovoltaic cell square matrix and negative electrode bonding pads connected with a cathode lead-out wire of the photovoltaic cell square matrix are respectively arranged at two ends of the integrated circuit board.
The invention can be connected with each battery string through the integrated circuit board so as to conveniently connect the bypass diode connected in parallel to each battery string, and when the bypass diode is connected in the power, the anode and the cathode are respectively connected with two corresponding battery string welding plates in the battery string, so that the bypass diode can be connected with each battery string in parallel. The invention can make each battery series group connected with the shunt diode connected in parallel, thereby being convenient for increasing the number of the shunt diodes, improving the battery efficiency, being convenient to operate, reducing the assembly lamination process and improving the assembly production efficiency. The integrated circuit board of the present invention may be flexible or rigid.
Preferably, m is 3.
Preferably, a plurality of junction boxes are also included.
Preferably, the number of the junction boxes is m, two bypass diodes are arranged in each junction box, the two bypass diodes in the junction boxes are respectively connected with two battery string groups which are correspondingly connected in series in the two battery string units in parallel, and the positive poles and the negative poles of the bypass diodes are respectively connected with two battery string welding discs which are correspondingly connected in the battery string groups, so that the bypass diodes are connected with the battery string groups in parallel. The bypass diodes can also be arranged in the junction boxes, wherein each junction box is provided with two bypass diodes, and the two bypass diodes are connected with two battery string groups corresponding to the positions in the two battery string units in parallel, so that each bypass diode controls one battery string group.
In the invention, the types of the battery pieces are various, and the battery pieces of various types can be adopted in the prior art, and preferably, the battery string comprises a plurality of battery pieces connected in series, and the battery pieces are sliced battery pieces.
Preferably, the slicing battery piece is a 1/2 slicing battery piece or a 1/4 slicing battery piece. The sliced battery piece in the invention can also be other types of sliced battery pieces.
Compared with the prior art, the invention has the beneficial effects that:
the invention can be applied to half-piece battery piece assemblies or battery assemblies with any size, and can also be applied to conventional whole-piece battery piece assemblies, so that each battery string is connected with a shunt diode in parallel, compared with the conventional photovoltaic assembly, the invention can effectively protect the battery piece when the assembly shields and spots, improve the output power and the generating capacity of the assembly, greatly simplify the production process, and reduce the laminating process of the assembly and the production efficiency of the assembly.
Drawings
Fig. 1 is a schematic structural view of a photovoltaic cell assembly of the prior art.
Fig. 2 is a schematic structural view of the present invention.
Fig. 3 is a schematic structural diagram of an embodiment of the parallel access bypass diode of fig. 2 according to the present invention.
Fig. 4 is a schematic structural view of the junction box arrangement of the present invention.
Detailed Description
As shown in fig. 2 and 3, the invention comprises a photovoltaic cell matrix, wherein the photovoltaic cell matrix comprises two parallel battery string units 7, each battery string unit 7 comprises m series battery string groups 6 and m bypass diodes 2 which are respectively connected with the battery string groups 6 in parallel in a one-to-one correspondence manner, and each battery string group 6 comprises two parallel battery strings which are connected in series, wherein m is an integer which is more than or equal to 1.
The bypass diode is arranged in various modes, the photovoltaic cell array comprises an integrated circuit board 1, the integrated circuit board 1 is positioned between two cell string units 7, cell string bonding pads 11 which are in welding fit with interconnection bars on the cell strings are arranged at corresponding positions of the integrated circuit board 1 and the cell string units 7 at two sides, each cell string group 6 is connected with one bypass diode 2 in parallel in a one-to-one correspondence mode, the positive pole and the negative pole of the bypass diode 2 are respectively connected with the two corresponding cell string bonding pads 11 in the cell string group 6, so that the bypass diode 2 is connected with the cell string group 6 in parallel, and positive electrode bonding pads 12 connected with positive pole outgoing lines of the photovoltaic cell array and negative electrode bonding pads 13 connected with negative outgoing lines of the photovoltaic cell array are respectively arranged at two ends of the integrated circuit board 1.
The battery string comprises a plurality of battery pieces connected in series, the battery pieces are various, the battery pieces of the invention can be of various types, and the battery pieces are sliced battery pieces, for example, the sliced battery pieces are 1/2 sliced battery pieces or 1/4 sliced battery pieces. The sliced battery piece in the invention can also be other types of sliced battery pieces.
The bypass diode can be integrated on the integrated circuit board, and the bypass diode is connected with each battery string 6 through the integrated circuit board 1, so that the bypass diode 2 connected in parallel is conveniently connected to each battery string 6, and when the bypass diode 2 is connected, the anode and the cathode are respectively connected with two corresponding battery string bonding pads 11 in the battery string 6, so that the bypass diode 2 is connected with each battery string 6 in parallel. According to the invention, each battery string 6 is connected into the parallel bypass diode 2, so that the number of the bypass diodes 2 can be increased conveniently, the battery efficiency is improved, the operation is convenient, the assembly lamination process is reduced, and the assembly production efficiency is improved. The integrated circuit board 1 in the present invention may be flexible or rigid. In the invention, the integrated circuit board 11 is encapsulated between two layers of encapsulation materials of the assembly, such as EVA and POE, and the application can be used for a conventional back plate assembly and a double-glass assembly.
As shown in fig. 4, the present invention further includes a plurality of junction boxes 3. For example, the number of the junction boxes 3 may be m, two bypass diodes 2 are disposed in each junction box 3, the two bypass diodes 2 in the junction boxes 3 are respectively connected in parallel with the corresponding two battery string groups 6 connected in series in the two battery string units 7, and the positive and negative poles of the bypass diodes 2 are respectively connected with the corresponding two battery string bonding pads 11 in the battery string groups 6, so that the bypass diodes 2 are connected in parallel with the battery string groups 6. In the invention, the bypass diodes 2 are arranged in the junction boxes 3, wherein each junction box 3 is provided with two bypass diodes 2, and the two bypass diodes 2 are connected with two battery string groups 6 corresponding to the positions of the two battery string units 7 in parallel, so that each bypass diode 2 controls one battery string group 6. In the invention, a plurality of battery string groups 6 can be arranged in each battery string unit 7, for example, m is 3, that is, 3 battery string groups 6 can be arranged in each battery string unit 7, the positive electrode and the negative electrode of the photovoltaic cell square matrix can be arranged at two ends of the integrated circuit board, and two junction boxes at two ends of the integrated circuit board are respectively used as a positive electrode junction box and a negative electrode junction box.
Claims (6)
1. The utility model provides a novel photovoltaic cell subassembly of circuit design, includes the photovoltaic cell square matrix, its characterized in that, the photovoltaic cell square matrix includes two parallelly connected battery string units, and every battery string unit includes m series connection's battery string group and m respectively with the parallelly connected bypass diode of battery string group one-to-one, every battery string group includes two parallel arrangement and series connection's battery string, wherein m is the integer that is greater than or equal to 1.
2. The novel circuit design photovoltaic cell assembly of claim 1, further comprising a plurality of junction boxes.
3. The photovoltaic cell assembly of claim 2, wherein m junction boxes are provided, two bypass diodes are disposed in each junction box, the two bypass diodes in the junction boxes are respectively connected with two battery string groups connected in series correspondingly in the two battery string units in parallel, and the positive pole and the negative pole of the bypass diodes are respectively connected with two corresponding battery string welding discs in the battery string groups so that the bypass diodes are connected in parallel with the battery string groups.
4. A novel circuit designed photovoltaic cell assembly according to claim 3 wherein m is 3.
5. The novel circuit design photovoltaic cell assembly of claim 4, wherein the cell string comprises a plurality of series-connected cells, the cells being sliced cells.
6. The novel circuit design photovoltaic cell assembly of claim 5, wherein the sliced cells are 1/2 sliced cells or 1/4 sliced cells.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810195034.9A CN108281499B (en) | 2018-03-09 | 2018-03-09 | Novel photovoltaic cell assembly with circuit design |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810195034.9A CN108281499B (en) | 2018-03-09 | 2018-03-09 | Novel photovoltaic cell assembly with circuit design |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108281499A CN108281499A (en) | 2018-07-13 |
| CN108281499B true CN108281499B (en) | 2023-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810195034.9A Active CN108281499B (en) | 2018-03-09 | 2018-03-09 | Novel photovoltaic cell assembly with circuit design |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109285905A (en) * | 2018-10-31 | 2019-01-29 | 浙江正泰太阳能科技有限公司 | Double generator unit imbrication photovoltaic modulies |
| CN110112239A (en) * | 2019-03-21 | 2019-08-09 | 国家电投集团西安太阳能电力有限公司 | A method of reducing solar cell module power loss |
| JP7266444B2 (en) * | 2019-03-29 | 2023-04-28 | パナソニックホールディングス株式会社 | Solar cell module and solar cell system |
| CN110212050A (en) * | 2019-06-13 | 2019-09-06 | 天合光能股份有限公司 | A kind of new structure photovoltaic cell component |
| CN114373817B (en) * | 2021-12-28 | 2022-12-16 | 北京博瑞原子空间能源科技有限公司 | Standard module for solar array, preparation method thereof and solar array with standard module |
| CN114242844B (en) * | 2022-01-04 | 2023-12-22 | 江苏日托光伏科技股份有限公司 | Method for simultaneously producing multiple photovoltaic modules in multiple formats |
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