CN104702209B - The detection method of solar battery sheet - Google Patents
The detection method of solar battery sheet Download PDFInfo
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- CN104702209B CN104702209B CN201510149558.0A CN201510149558A CN104702209B CN 104702209 B CN104702209 B CN 104702209B CN 201510149558 A CN201510149558 A CN 201510149558A CN 104702209 B CN104702209 B CN 104702209B
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- battery pack
- cell piece
- solar module
- collecting device
- current collecting
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- 238000001514 detection method Methods 0.000 title claims abstract description 20
- 230000002159 abnormal effect Effects 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000000630 rising effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
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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 invention discloses a kind of detection method of solar cell, the method includes：Cell piece in solar module is divided at least two battery pack；Current collecting device is connected in each battery pack in solar module, and so which is connected with the cell piece in the battery pack of place；Cover each the different cell piece in each battery pack described successively, and glistened after covering every time；The current data that the current collecting device is collected after gathering and recording flash of light every time；Compare each current data, and determine the position of abnormal cell piece.The method can quickly, simply detect the exception in solar module or problem cell piece by comparing the size of current data.
Description
Technical field
The present invention relates to solar cell detection field, more particularly to a kind of detection method of solar battery sheet.
Background technology
In prior art, solar cell generally existing hot spot heating effect, the problems such as due to production technology, solar energy group
To be load by power source transition when in part, Individual cells piece is blocked, power consumption, hot spot is formed, threatens photovoltaic system safety.
In order to prevent hot spot effect, conventional photovoltaic device is commonly used bypass diode and provides protective effect with battery series-parallel connection.But in reality
In the situation of border, although there is bypass diode, but still have electric current by Individual cells, produce power, and generate heat and cause
Even there is the situation of fire in encapsulating material melting.Therefore when assessment solar module bears hot spot heating efficiency
Generally need to consider the ability that solar cell bears reverse biased, selecting and reliable for these individual problem cell pieces
Property test be necessary.
Laboratory carries out hot spot test chip select mainly using a whole set of solar simulator equipment at present, by blocking successively too
Sun can be in battery component every piece of battery gathering the data of correlation, and form a whole piece IV curve, then gone out by software back
The information such as the open-circuit voltage of every piece of battery, short circuit current, peak power, can just select the battery that goes wrong.
For the hot spot chip select of the solar cell of standard, need to carry out the leakage current of each monolithic battery successively
Select, light flash excitation is carried out to solar cell using light source analogy device so that the monolithic battery after blocking completely bears other
The reverse biased of normal battery, each light flash excitation PN junction produce carrier, according to as above theoretical, work relatively cumbersome.For example
For the conventional solar module of a N piece battery series connection, to typically carry out n times flash of light to collect per a piece of battery
IV curve data, then data convert process is carried out, all operations are more complicated, time-consuming.
Content of the invention
The invention aims to solving the above problems, one kind being provided and can simply, quickly be detected exception or ask
The detection method of the solar battery sheet of topic cell piece.
A kind of detection method of solar battery sheet that the present invention is provided, including：
Cell piece in solar module is divided at least two battery pack；
Current collecting device is connected in each battery pack in solar module, and which is made with place battery pack
Interior cell piece series connection；
Cover each the different cell piece in each battery pack described successively, and glistened after covering every time；
The current data that the current collecting device is collected after gathering and recording flash of light every time；
Compare each current data, and determine the position of abnormal cell piece.
The present invention provides a kind of detection method of solar cell, by each battery pack in solar module
Two exits of head and the tail connection current collecting devices gathering the current data for flowing through battery pack, each current data all passes through
Battery pack after one battery of flash defilade and obtain.By comparing current data, you can electric to determine the exception in battery pack
The position of pond piece.Problematic solar battery sheet, the solar battery sheet of the present invention are detected compared to existing IV test
Detection method can quickly, simply detect abnormal cell piece in battery pack, saved detection time, while also extending
The useful life of light source.
Description of the drawings
Accompanying drawing described herein is used for providing further understanding of the present application, constitutes the part of the application, this Shen
Schematic description and description please does not constitute the improper restriction to the application for explaining the application.In the accompanying drawings：
Fig. 1 is the flow chart of the detection method of solar battery sheet of the present invention；
Fig. 2 is the link position schematic diagram between current collecting device and solar module；
Fig. 3 is the equivalent circuit diagram between current collecting device and solar module；
Fig. 4 is another link position schematic diagram between current collecting device and solar module；
Fig. 5 is another equivalent circuit diagram between current collecting device and solar module.
Specific embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and
Corresponding accompanying drawing is clearly and completely described to technical solution of the present invention.Obviously, described embodiment is only the present invention one
Section Example, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
The every other embodiment obtained under the premise of going out creative work, belongs to the scope of protection of the invention.
A kind of detection method of solar battery sheet that Fig. 1 is provided for the present invention, the method is mainly for detection of solar energy
Exception present in battery component or problematic cell piece, which specifically includes following step：
S101：Cell piece in solar module is divided at least two battery pack.
In the embodiment that the present invention is provided, the cell piece in solar module is divided at least two battery pack can
To reduce number of times when follow-up light source glistens.Assume that solar module includes N piece battery, and be divided into M battery pack, then
X (X=N/M) secondary light source is only needed to glisten, you can to complete adopting for the corresponding current data of each cell piece in solar module
Collection.
S102：Current collecting device is connected in each battery pack in solar module, and which is made with place
Cell piece series connection in battery pack.
The present invention provide embodiment in, solar module to be detected include at least one battery pack 30 and with
The terminal box 60 that battery pack 30 connects, as shown in Figure 2.
Specifically, three battery pack 30 and one be connected with battery pack are included in the solar module that Fig. 2 shows
Terminal box 60, includes some cell pieces 301 being cascaded in each battery pack 30.
Refer to Fig. 2 and Fig. 3 is combined, current collecting device 40 is connected to each battery pack 30 in solar module
Two exits, and so which is connected with the cell piece 301 in place battery pack 30.Also include and each electric current in terminal box 60
The bypass diode 50 that harvester 40 is connected in parallel.Bypass diode 50 is mainly used in providing protection work to battery pack 30
With preventing hot spot effect.
Therefore, current collecting device 40 is connected in each battery pack 30 in solar module, and make its with
Cell piece 301 in place battery pack 30 is connected, and specifically includes：Find two pole of bypass for being connected in parallel on 30 two ends of battery pack in advance
Pipe 50, and current collecting device 40 is connected with the bypass diode 50.
In the embodiment that the present invention is provided, the cell piece in solar module is divided at least two battery pack,
Specifically include：According to the quantity of 60 internal bypass diode 50 of terminal box, cell piece 301 is divided into the corresponding battery pack 30 of quantity.
It should be noted that solar module to be detected is not accessed in solar power system.Each battery
Linked together by busbar 70 between group 30 and terminal box 60, busbar 70 draws from the head and the tail exit of each battery pack 30
Go out and thereto 60 is interior and welds together with the sheet metal (not shown) in terminal box 60.
In another embodiment that the present invention is provided, solar module to be detected only includes at least one battery
Group 30, as shown in Figure 4.
Specifically, three battery pack 30 are included in the solar module that Fig. 4 shows, if including in each battery pack 30
The dry cell piece 301 being cascaded.
Refer to Fig. 4 and Fig. 5 is combined, current collecting device 40 can be connected directly to every in solar module
Between two exits of individual battery pack 30, and which is made to connect with the cell piece 301 in place battery pack 30.
It should be noted that solar module to be detected is not accessed in solar power system, each battery
Two exits of head and the tail of group 30 are linked together with a current collecting device 40 by busbar 70.
When glistening to battery pack 30, current collecting device 40 can gather the electricity for flowing through each battery pack 30
Flow data.Current collecting device described in this step is roughly the same with traditional current collecting device to have no special structure, because
Here is omitted for this.
S103：Cover each the different cell piece in each battery pack described successively, and dodged after covering every time
Light.
In the embodiment that the present invention is provided, after glistening to battery pack, electric current in battery pack, can be produced.Need explanation
, in the embodiment that the present invention is provided, solar module to be detected includes three battery pack 30, if each battery
All there are ten cell pieces in group 30, each battery pack 30 is all connected with a current collecting device 40, while covering each battery pack
A cell piece 301 in 30, after glistening once like that, each current collecting device 40 can all obtain a corresponding electric current
Data.So, it is only necessary at the same three battery pack 30 are carried out ten times flash of light, it is possible to collect 30 current data, and
IV curve is drawn as glistening 30 times in the prior art and then again need not.In this way, electricity in solar components can have been saved
The detection time of pond piece.Simultaneously as the number of times of flash operation is reduced, the use longevity that light source is provided also in a disguised form is extended
Life, the such as service life of solar simulator.
S104：The current data that the current collecting device is collected after gathering and recording flash of light every time.
In the embodiment that the present invention is provided, flowing through that current collecting device can be gathered and be obtained after recording flash of light every time is right
Answer the current data of battery pack.
S105：Compare each current data, and determine the position of abnormal cell piece.
In the embodiment that the present invention is provided, collect in current data from current collecting device, find abnormal electric current
Data, and confirm the cell piece 301 corresponding to the abnormal current data.Specifically, look in some current data for obtaining
To the current data of greatest measure, the current data is abnormal current data, and determines the quilt corresponding to abnormal current data
The position that the cell piece 301 of masking is located.
By above-mentioned steps, the detection method of solar battery sheet of the present invention is just completed, by the detection method, so that it may
To find the abnormal cell piece in solar module.
The present invention provides a kind of detection method of solar cell, by each battery pack in solar module
Two exits of head and the tail connection current collecting devices gathering the current data for flowing through battery pack, each current data all passes through
Battery pack after one battery of flash defilade and obtain.By comparing current data, you can electric to determine the exception in battery pack
The position of pond piece.Problematic solar battery sheet, the solar battery sheet of the present invention are detected compared to existing IV test
Detection method can quickly, simply detect abnormal cell piece in battery pack, saved detection time, while also extending
The useful life of light source.
Above-described instantiation, has been carried out to the purpose of the present invention, technical scheme and beneficial effect further in detail
Illustrate, should be understood that the specific embodiment that the foregoing is only the present invention, be not limited to the present invention, all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvement that is done etc., should be included in the protection of the present invention
Within the scope of.
Claims (6)
1. a kind of detection method of solar cell, it is characterised in that include：
Cell piece in solar module is divided at least two battery pack；
Current collecting device is connected in each battery pack in solar module, and make its with place battery pack in
Cell piece is connected；
Successively while covering each cell piece in each battery pack described, and glistened after covering every time；
The current data that the current collecting device is collected after gathering and recording flash of light every time；
Compare each current data, and determine the position of abnormal cell piece.
2. the method for claim 1, it is characterised in that the solar module includes to be connected to battery pack
The terminal box for rising, is provided with the bypass diode for being connected to two exits of battery pack in the terminal box.
3. method as claimed in claim 2, it is characterised in that the cell piece in solar module is divided at least two
Battery pack, including：According to the quantity of terminal box internal bypass diode, cell piece is divided into the corresponding battery pack of quantity.
4. the method for claim 1, it is characterised in that the position of the determination exception cell piece, including：Adopt from electric current
Acquisition means are collected in current data, are found abnormal current data, and are confirmed the battery corresponding to the abnormal current data
Piece.
5. the method for claim 1, it is characterised in that described current collecting device is connected to solar module
In each interior battery pack, including：Current collecting device is connected directly between two exits of the battery pack.
6. the method for claim 1, it is characterised in that described current collecting device is connected to solar module
In each interior battery pack, including：Find the bypass diode for being connected in parallel on the battery pack two ends in advance, and by current collecting device
Connect with the bypass diode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510149558.0A CN104702209B (en) | 2015-03-31 | 2015-03-31 | The detection method of solar battery sheet |
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| CN201510149558.0A CN104702209B (en) | 2015-03-31 | 2015-03-31 | The detection method of solar battery sheet |
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| CN104702209A CN104702209A (en) | 2015-06-10 |
| CN104702209B true CN104702209B (en) | 2017-03-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105187011B (en) * | 2015-06-29 | 2017-11-03 | 福建铂阳精工设备有限公司 | Search solar cell current limiting unit and output uniform current method, shade |
| US10491154B2 (en) * | 2015-07-10 | 2019-11-26 | Hitachi Systems, Ltd | Solar power generation examination system and solar power generation examination method |
| CN106470013B (en) * | 2015-08-21 | 2018-09-25 | 阿特斯阳光电力集团有限公司 | A method of detection PID photovoltaic cells |
| JP6526327B2 (en) * | 2016-04-28 | 2019-06-05 | 三菱電機株式会社 | Inspection method of solar cell module |
| CN108333495B (en) * | 2018-03-01 | 2020-11-03 | 国家电投集团西安太阳能电力有限公司 | Method for detecting working state of bypass diode of photovoltaic module junction box |
| CN111030595B (en) * | 2019-12-16 | 2022-08-30 | 凯盛光伏材料有限公司 | Method for testing sub-cell of solar thin film assembly |
| CN116961580B (en) * | 2023-09-19 | 2023-12-19 | 三峡新能源平定发电有限公司 | Photovoltaic panel operation and maintenance overhauling device and overhauling method thereof |
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| JP3308434B2 (en) * | 1995-10-19 | 2002-07-29 | ミサワホーム株式会社 | Abnormality detector for solar panel |
| CN101893678B (en) * | 2010-08-12 | 2012-05-23 | 天津大学 | Fault diagnosis method of large-sized photovoltaic array |
| JP2014212212A (en) * | 2013-04-18 | 2014-11-13 | Ｊｘ日鉱日石エネルギー株式会社 | Switching device, fault detector, photovoltaic power generation system, and switching method |
| CN103944510A (en) * | 2014-05-06 | 2014-07-23 | 河海大学常州校区 | Photovoltaic module output characteristic judgment method |
| CN104362976B (en) * | 2014-10-15 | 2017-11-28 | 华北电力大学 | It is a kind of to utilize the method for covering method detection photovoltaic generating system trouble point |
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Address after: 215129 Suzhou high tech Zone, Jiangsu, Lu Shan Road, No. 199 Patentee after: Artes sunshine Power Group Co. Ltd. Patentee after: Changshu Canadian Solar Inc. Address before: 215129 Suzhou high tech Zone, Jiangsu, Lu Shan Road, No. 199 Patentee before: Canadian (China) Investment Co., Ltd. Patentee before: Changshu Canadian Solar Inc. |
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Address after: No. 199, deer mountain road, Suzhou high tech Zone, Jiangsu Province Patentee after: Atlas sunshine Power Group Co.,Ltd. Patentee after: Changshu Artes Sunshine Power Technology Co.,Ltd. Address before: No. 199, deer mountain road, Suzhou high tech Zone, Jiangsu Province Patentee before: CSI SOLAR POWER GROUP Co.,Ltd. Patentee before: Changshu Artes Sunshine Power Technology Co.,Ltd. |