CN205609538U - Photovoltaic module - Google Patents
Photovoltaic module Download PDFInfo
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- CN205609538U CN205609538U CN201620147794.9U CN201620147794U CN205609538U CN 205609538 U CN205609538 U CN 205609538U CN 201620147794 U CN201620147794 U CN 201620147794U CN 205609538 U CN205609538 U CN 205609538U
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- photovoltaic cell
- photovoltaic
- photovoltaic module
- battery strings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The utility model relates to a photovoltaic module, including two above photovoltaic cell, the photovoltaic cell series connection becomes the photovoltaic cell cluster, photovoltaic cell goes here and there the series connection, more than two battery cluster return circuit is constituteed to the photovoltaic cell cluster, battery cluster return circuit is parallelly connected with bypass diode, bypass diode's number is more than or equal to the number in battery cluster return circuit, photovoltaic cell cluster along photovoltaic module's long limit direction is arranged in proper order. The utility model discloses for to reduce because photovoltaic module's part is sheltered from and is leaded to by the photovoltaic cell's of short circuit number improvement photovoltaic module's generating capacity as far as possible.
Description
Technical field
This utility model relates to field of photovoltaic power generation, particularly relates to a kind of photovoltaic module.
Background technology
Photovoltaic cell is the device that solar energy is directly changed into electric energy.Owing to the output voltage of single photovoltaic cell is the least, actually used in single photovoltaic cell through series and parallel and is packaged into the photovoltaic module that can independently use as photo-voltaic power supply.
Generally, in a photovoltaic module, the electrical characteristics of each photovoltaic cell are basically identical.If photovoltaic module exists problematic photovoltaic cell, such as: electrical property is bad or the photovoltaic cell that is blocked, then problem photovoltaic cell will be due to reasons such as electrical property are bad or blocks, making the short circuit current that problem photovoltaic cell exports less than the operating current in series arm, this allows for problem photovoltaic cell may produce hot spot effect.When hot spot effect occurs, problem photovoltaic cell is placed in reverse-bias state, its output short circuit current much larger than the photovoltaic power of its output, causes this problem photovoltaic battery temperature to raise rapidly less than the operating current in series arm, the power consumed on problem photovoltaic cell.Hot spot effect not only can reduce the generating capacity of photovoltaic module, also can have a strong impact on the service life of photovoltaic module.
In order to avoid because the reason such as blocking to cause the hot spot effect of photovoltaic module, can be to photovoltaic cell plus bypass diode.As shown in Figure 1 a, 1 b, for prior art adds the structural representation of bypass diode to photovoltaic cell, in Fig. 1 a and Fig. 1 b, all include 4 photovoltaic cells 11 and 1 bypass diode 12, photovoltaic cell 11 is square, and 4 photovoltaic cells 11 are sequentially connected in series, and the positive pole of bypass diode 12 and first photovoltaic cell 11 connect, the negative pole of bypass diode 12 and the 4th photovoltaic cell 11 connect, namely in parallel with a bypass diode 12 after 4 photovoltaic cell 11 series connection.In fig 1 a, 4 photovoltaic cells 11 normally work, and bypass diode 12 reversely ends, and circuit does not produce any effect；In Figure 1b, in 4 photovoltaic cells 11 in parallel with bypass diode 12, second photovoltaic cell 11 is blocked and cisco unity malfunction from left to right, the electric current of whole circuit is determined by the photovoltaic cell of minimum current, and size of current depends on the area that photovoltaic cell is shielded, when reversed bias voltage is higher than minimum voltage in circuit, bypass diode 12 turns on, then 4 photovoltaic cells 11 are shorted, so electric current will not had on the photovoltaic cell being blocked to flow through, also it is overheated to produce, thus avoids the hot spot effect of photovoltaic module.Ideally, each photovoltaic cell 11 answers a bypass diode 12 in parallel, but in view of the existence of pressure drop under bypass diode 12 Costco Wholesale and dark current loss and duty, the most every 15～24 photovoltaic cells 11 just bypass diode in parallel.As shown in Figure 2, connection diagram for the photovoltaic cell 11 in photovoltaic module with bypass diode 12, in this schematic diagram, photovoltaic module includes 72 photovoltaic cells 11, it is parallel with a bypass diode 12 on the battery strings loop that every 24 photovoltaic cells 11 are composed in series, each battery strings loop includes 2 photovoltaic cell strings, is attached by busbar between adjacent photovoltaic cell string, and the border in adjacent two battery strings loops is 12 photovoltaic cells 11.So, in fig. 2, one has three battery strings loops and three bypass diodes 12.
But, in existing photovoltaic module, the structure in battery strings loop may affect the generating capacity of photovoltaic module.Give one example below and illustrate, as shown in Figure 3 a, for the photovoltaic module shown in Fig. 2 by a schematic diagram of partial occlusion, shown in Fig. 3 b, for the photovoltaic module shown in Fig. 2 by the b schematic diagram of partial occlusion, specifically can there be two kinds of circumstance of occlusions of Fig. 3 a and Fig. 3 b, in fig. 3 a, in the battery strings loop that topmost two row photovoltaic cells 11 are connected into, 6 photovoltaic cells 11 are had to be blocked, but owing to these 6 photovoltaic cells 11 are in same battery strings loop, so, the bypass diode 12 in parallel with this battery strings loop turns on, 48 photovoltaic cells 11 in other two battery strings loop the most normally work；And in fig 3b, unlike Fig. 3 a, this figure there are 2 photovoltaic cells 11 be blocked, but be blocked two photovoltaic cells 11 are respectively at two different battery strings loops, so the bypass diode 12 in the different battery strings loop of the two is all by conducting, this results in has 48 photovoltaic cells 11 to be shorted in this photovoltaic module, although the number of the photovoltaic cell being blocked is less than the number of the photovoltaic cell being blocked in Fig. 3 a, but 24 photovoltaic cells 11 in the battery strings loop that in Fig. 3 b, only bottom two row photovoltaic cells 11 are connected into can normally work, the generating capacity making photovoltaic module declines.Therefore, the photovoltaic cell 11 the being blocked probability in a battery strings loop is smaller, so the structure in battery strings loop may be such that and causes due to the partial occlusion of photovoltaic module substantial amounts of photovoltaic cell 11 to be shorted in existing photovoltaic module, thus affect the generating capacity of photovoltaic module.
Utility model content
This utility model provides a kind of photovoltaic module, in order to reduce the number of photovoltaic cell causing due to the partial occlusion of photovoltaic module being shorted as far as possible, improves the generating capacity of photovoltaic module.
A kind of photovoltaic module of offer of the present utility model, including two or more photovoltaic cell, the series connection of described photovoltaic cell connects into photovoltaic cell string, and described photovoltaic cell string is connected in series；
Photovoltaic cell string composition battery strings loop described in two or more；
Described battery strings loop is in parallel with bypass diode, and the number of described bypass diode is more than or equal to the number in described battery strings loop；
Described photovoltaic cell string is arranged in order along the long side direction of described photovoltaic module.
In this utility model, by the photovoltaic cell string being connected in series is arranged in order along the long side direction of photovoltaic module, plural photovoltaic cell string composition battery strings loop, it is achieved each battery strings loop is arranged in order along the long side direction of photovoltaic module.So, battery strings loop is being arranged along long side direction, be equivalent to broaden the width in battery strings loop, when photovoltaic module is at least partially obscured, the photovoltaic cell the being blocked probability in a battery strings loop increases, if the photovoltaic cell being blocked is in same battery strings loop, then the photovoltaic cell in other battery strings loops can normally work, such that it is able to the number that minimizing is shorted at the photovoltaic cell that photovoltaic module causes due to partial occlusion, improve the generating capacity of photovoltaic module.
Accompanying drawing explanation
Fig. 1 a, Fig. 1 b are the structural representation adding bypass diode in prior art to photovoltaic cell；
Fig. 2 is the connection diagram of the photovoltaic cell 11 in photovoltaic module and bypass diode 12；
Fig. 3 a is that the photovoltaic module shown in Fig. 2 is by a schematic diagram of partial occlusion；
Fig. 3 b is that the photovoltaic module shown in Fig. 2 is by the b schematic diagram of partial occlusion；
Fig. 4 is the structural representation of this utility model photovoltaic module first embodiment；
Fig. 5 is the structural representation of this utility model photovoltaic module the second embodiment.
Detailed description of the invention
Below in conjunction with specification drawings and specific embodiments, the utility model will be further described.
As shown in Figure 4, structural representation for this utility model photovoltaic module first embodiment, this photovoltaic module can include two or more photovoltaic cell 11, bypass diode 12, battery strings loop 41 and photovoltaic cell string 411, wherein, photovoltaic cell 11 is serially connected in photovoltaic cell string 411, photovoltaic cell string 411 is connected in series, battery strings loop 41 is in parallel with bypass diode 12, specifically, the positive and negative polarities of bypass diode 12 are connected to the two ends in battery strings loop 41, wherein, the number of bypass diode 12 is more than or equal to the number in battery strings loop 41.
In the present embodiment, two or more photovoltaic cell string 411 forms battery strings loop 41, and the most each battery strings loop 41 includes plural photovoltaic cell string 411；Photovoltaic cell string 411 is arranged in order along the long side direction of photovoltaic module, then battery strings loop 41 is also to be arranged in order along the long side direction of photovoltaic module.Specifically, the long side direction of photovoltaic module and short side direction can determine according to the number of photovoltaic cell 11, also just say, if photovoltaic cell 11 number be more than the number of another side, can this limit be called then long limit, the another side that correspondingly photovoltaic cell 11 number is fewer be minor face.
In the present embodiment, by the photovoltaic cell string being connected in series 411 is arranged in order along the long side direction of photovoltaic module, plural photovoltaic cell string 411 forms battery strings loop 41, it is achieved each battery strings loop 41 is arranged in order along the long side direction of photovoltaic module.So, battery strings loop 41 is being arranged along long side direction, be equivalent to broaden the width in battery strings loop 41, when photovoltaic module is at least partially obscured, the photovoltaic cell 11 the being blocked probability in a battery strings loop 41 increases, if the photovoltaic cell being blocked 11 is in same battery strings loop 41, then the photovoltaic cell 11 in other battery strings loops 41 can normally work, such that it is able to the number that minimizing is shorted at the photovoltaic cell 11 that photovoltaic module causes due to partial occlusion, improve the generating capacity of photovoltaic module.
Alternatively, in the present embodiment, photovoltaic cell 11 is serially connected in photovoltaic cell string 411 along the short side direction of photovoltaic module, and photovoltaic cell string 411 is arranged in order along the long side direction of photovoltaic module.Therefore, the number of the photovoltaic cell 11 in a photovoltaic cell string 411 is less than the number of photovoltaic cell string 411 in this photovoltaic module.
Alternatively, in the present embodiment, photovoltaic cell 11 can be square, and according to the application demand in reality, photovoltaic cell 11 can also be other arbitrary shapes.
Alternatively, in the present embodiment, if photovoltaic cell 11 is square, the border in adjacent two battery strings loops 41 is more than or equal to the height of two photovoltaic cells 11, at this moment, one photovoltaic cell string 411 includes plural photovoltaic cell 11, photovoltaic cell in the most whole photovoltaic module uses the array of two dimension to arrange, such as: photovoltaic module has 72 photovoltaic cells 11, then in the way of to use a photovoltaic cell string 411, this photovoltaic module can include that 11, battery strings loop 41 of 6 photovoltaic cells includes 4 photovoltaic cell strings 411.
Alternatively, in the present embodiment, if photovoltaic cell 11 is square, the height that border is a photovoltaic cell 11 in adjacent two battery strings loops 41, now, one photovoltaic cell string 411 includes a photovoltaic cell 11, then in photovoltaic module, all of photovoltaic cell 11 is exactly the long limit word order along photovoltaic module.But, due to this mode can produce that the frame material that photovoltaic module uses increases, the problem such as structural strength is more weak, so the border in the most aforesaid adjacent two battery strings loops 41 arranges photovoltaic cell 11 more than or equal to the mode of height of two photovoltaic cells 11.
Alternatively, in the present embodiment, each battery strings loop 41 is in parallel with one or more bypass diode 12, two or more bypass diode 12 is connected in series, that is, the number of bypass diode 12 in parallel in each cell circuit 41 can be more than one or two, if two or more bypass diode 12, is then connected in series between the plural bypass diode 12 in this battery strings loop 41.In actual application, it is contemplated that the Costco Wholesale of bypass diode 12, in the case of not affecting circuit performance, it is preferable that each battery strings loop 41 is in parallel with a bypass diode 12.
Alternatively, in the present embodiment, it is connected in series by busbar between photovoltaic cell string 411, is connected in series by interconnecting strip between the photovoltaic cell 11 in photovoltaic cell string 411.
As shown in Figure 5, structural representation for this utility model photovoltaic module the second embodiment, it is with the difference of a upper embodiment, in this embodiment, photovoltaic module specifically can include 72 photovoltaic cells 11, each photovoltaic cell string 411 has 6 photovoltaic cells 11 connect, each battery strings loop 41 have 4 photovoltaic cell strings 411 be connected in series, so, this photovoltaic module includes 3 battery strings loops 41；Each battery strings loop 41 is connected in parallel with a bypass diode 12.Referring back to the schematic diagram shown in Fig. 5,12 photovoltaic cells 11 are had on the long limit of this photovoltaic module, 6 photovoltaic cells 11 are had on minor face, photovoltaic cell 11 is serially connected in photovoltaic cell string 411 along the short side direction of photovoltaic module, and photovoltaic cell string 411 is arranged in order along the long side direction of this photovoltaic module.
nullThe photovoltaic module of this embodiment all have employed every 24 photovoltaic cells 11 and connects and obtain battery strings loop 41 with the photovoltaic module shown in Fig. 2，And photovoltaic cell 11 normally works and exports the series connection remaining 72 photovoltaic cells 11，Output voltage、The parameters such as electric current are as the photovoltaic module shown in Fig. 2，But，This embodiment is different from the connected mode of the photovoltaic cell 11 shown in Fig. 2、The long limit of photovoltaic module is different with minor face、The mode of bypass diode 12 in parallel is different，In this embodiment，Each photovoltaic cell string 411 only includes 6 photovoltaic cells，Add the quantity of photovoltaic cell string 411，And photovoltaic cell string 411 is arranged in order along the long side direction of photovoltaic module，Therefore，The height that border is 6 photovoltaic cells 11 in adjacent two battery strings loops 41 in this embodiment，The height that border is 12 photovoltaic cells 11 less than adjacent two the battery strings loops 41 shown in Fig. 2.So the border in battery strings loop 41 shortens, the probability that different battery strings loops 41 are blocked cisco unity malfunction simultaneously will reduce, although this embodiment is still the structure of 12*6, but the meaning on minor face and long limit changes, so being substantially reduced the photovoltaic cell 11 the being blocked probability in a battery strings loop 41, reduce the number that the photovoltaic cell 11 that photovoltaic module causes due to partial occlusion is shorted, improve the generating capacity of photovoltaic module.
Alternatively, in this embodiment, if photovoltaic module includes 60 photovoltaic cells 11, then photovoltaic cell 11 can be connected in series in the way of using 10*6 or 15*4, as a example by 15*4, the most every 4 photovoltaic cells 11 are serially connected in a photovoltaic cell string 411, and every 5 photovoltaic cell strings are composed in series a battery strings loop 41, then photovoltaic cell can include 3 battery strings loops 41.
It is last it is noted that above example is only in order to illustrate the technical solution of the utility model and unrestricted, although this utility model being described in detail with reference to preferred embodiment, it will be understood by those within the art that, the technical solution of the utility model can be modified or equivalent, without deviating from the spirit and scope of technical solutions of the utility model.
Claims (6)
1. a photovoltaic module, it is characterised in that include two or more photovoltaic cell, described photovoltaic electric
Pond is serially connected in photovoltaic cell string, and described photovoltaic cell string is connected in series；
Photovoltaic cell string composition battery strings loop described in two or more；
Described battery strings loop is in parallel with bypass diode, the number of described bypass diode more than or etc.
Number in described battery strings loop；
Described photovoltaic cell string is arranged in order along the long side direction of described photovoltaic module.
Photovoltaic module the most according to claim 1, it is characterised in that described photovoltaic cell along
The short side direction of described photovoltaic module is serially connected in described photovoltaic cell string, described photovoltaic cell string edge
The long side direction described photovoltaic module is arranged in order.
Photovoltaic module the most according to claim 1, it is characterised in that described photovoltaic cell is just
Square.
Photovoltaic module the most according to claim 3, it is characterised in that adjacent two described batteries
The border of string loop is the height of a described photovoltaic cell；Or
The border in adjacent two described battery strings loops is more than or equal to the height of two described photovoltaic cells
Degree.
Photovoltaic module the most according to claim 1, it is characterised in that described photovoltaic cell string it
Between be connected in series by busbar, between the photovoltaic cell in described photovoltaic cell string by interconnection
Bar is connected in series.
Photovoltaic module the most according to claim 1, it is characterised in that each battery strings loop with
One or more described bypass diode is in parallel, and the above bypass diode of said two is connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620147794.9U CN205609538U (en) | 2016-02-26 | 2016-02-26 | Photovoltaic module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620147794.9U CN205609538U (en) | 2016-02-26 | 2016-02-26 | Photovoltaic module |
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| CN205609538U true CN205609538U (en) | 2016-09-28 |
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| CN201620147794.9U Active CN205609538U (en) | 2016-02-26 | 2016-02-26 | Photovoltaic module |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107195719A (en) * | 2017-07-03 | 2017-09-22 | 隆基乐叶光伏科技有限公司 | Stacked tile type solar photovoltaic assembly and production equipment |
| CN107293608A (en) * | 2017-05-25 | 2017-10-24 | 河北曹妃甸汉能薄膜太阳能有限公司 | Cylinder manifold, double glass Thinfilm solar cell assemblies and preparation method thereof |
| CN108258077A (en) * | 2018-03-09 | 2018-07-06 | 天合光能股份有限公司 | Half photovoltaic cell subassembly of full tandem type |
| CN108666383A (en) * | 2018-04-27 | 2018-10-16 | 中国科学院半导体研究所 | A kind of photovoltaic module configured with bypass diode |
| CN111725345A (en) * | 2020-06-29 | 2020-09-29 | 合肥阳光新能源科技有限公司 | Photovoltaic module circuit, photovoltaic module and photovoltaic power plant |
| CN111769801A (en) * | 2020-04-20 | 2020-10-13 | 苏州元昱新能源有限公司 | Photovoltaic module for detecting positive shielding of photovoltaic cell in module |
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2016
- 2016-02-26 CN CN201620147794.9U patent/CN205609538U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107293608A (en) * | 2017-05-25 | 2017-10-24 | 河北曹妃甸汉能薄膜太阳能有限公司 | Cylinder manifold, double glass Thinfilm solar cell assemblies and preparation method thereof |
| CN107293608B (en) * | 2017-05-25 | 2019-08-16 | 河北曹妃甸汉能薄膜太阳能有限公司 | Cylinder manifold, double glass Thinfilm solar cell assemblies and preparation method thereof |
| CN107195719A (en) * | 2017-07-03 | 2017-09-22 | 隆基乐叶光伏科技有限公司 | Stacked tile type solar photovoltaic assembly and production equipment |
| CN107195719B (en) * | 2017-07-03 | 2024-03-08 | 滁州隆基乐叶光伏科技有限公司 | Production equipment of shingled solar photovoltaic module |
| CN108258077A (en) * | 2018-03-09 | 2018-07-06 | 天合光能股份有限公司 | Half photovoltaic cell subassembly of full tandem type |
| CN108666383A (en) * | 2018-04-27 | 2018-10-16 | 中国科学院半导体研究所 | A kind of photovoltaic module configured with bypass diode |
| CN111769801A (en) * | 2020-04-20 | 2020-10-13 | 苏州元昱新能源有限公司 | Photovoltaic module for detecting positive shielding of photovoltaic cell in module |
| CN111725345A (en) * | 2020-06-29 | 2020-09-29 | 合肥阳光新能源科技有限公司 | Photovoltaic module circuit, photovoltaic module and photovoltaic power plant |
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