CN203310896U - Solar energy cell sheet reverse leakage current detection device - Google Patents
Solar energy cell sheet reverse leakage current detection device Download PDFInfo
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- CN203310896U CN203310896U CN2013202362667U CN201320236266U CN203310896U CN 203310896 U CN203310896 U CN 203310896U CN 2013202362667 U CN2013202362667 U CN 2013202362667U CN 201320236266 U CN201320236266 U CN 201320236266U CN 203310896 U CN203310896 U CN 203310896U
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- cell sheet
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Abstract
The utility model discloses a solar energy cell sheet reverse leakage current detection device comprising a DC voltage source, a current display device, a copper plate bearing a cell sheet, and a test pencil. The positive electrode of the DC voltage source is connected with the current display device via a conductive wire. The current display device is connected with the test pencil via the conductive wire. The test pencil nib is contacted with a main gate wire of the front side of the cell sheet. The copper plate bears the cell sheet with right side up. The lower surface of the copper plate is connected with the negative electrode of the DC voltage source via the conductive wire. The solar energy cell sheet reverse leakage current detection device is easy to operate and lower in cost so that reverse leakage current detection towards the solar energy cell sheet is realized, production efficiency is enhanced, production technology is optimized, and performance of the solar energy cell sheet is further enhanced.
Description
Technical field
The utility model relates to a kind of solar battery sheet field, relates in particular to a kind of reverse leakage flow detection device of solar battery sheet.
Background technology
The solar battery sheet inverse current refers to the leakage current of battery P-N knot, the quality that has reflected the P-N knot, the leakage current increase can make the parallel resistance of battery reduce, thereby fill factor, curve factor is descended, cause the useful power of battery to descend, therefore, in the large-scale production of crystal silicon solar battery assembly, be necessary solar battery sheet is carried out to leakage current test, like this, after can preventing that cell piece from making assembly on the one hand, when the both positive and negative polarity of cell piece is connect anti-or assembly and is coupled with reversed bias voltage, because the dark current of cell piece is excessive, after the electric current stack, can rapidly cell piece be punctured, on the other hand after the cell piece technological process finishes, can observe the technological problems that may occur by the test dark current, optimized production process, improve the solar components quality.
Chinese invention patent Granted publication CN101435851 discloses a kind of method of utilizing thermal infrared imager to detect solar cell leakage current, the method comprises the following steps: (1) will make complete solar cell piece and be placed in darkroom, the objective table close contact that the back side of solar cell is good with heat radiation, both positive and negative polarity and the stabilized voltage supply of solar cell connect, and thermal infrared imager is aimed to the solar cell sensitive surface; (2) utilize stabilized voltage supply additional positive bias or negative bias on solar cell, then observe Infrared Thermogram; (3) judgement is drain region at Infrared Thermogram by being shown as obvious high-temperature region, relative peripheral region; (4) according to the position of drain region and the form of expression under positive negative bias, infer the reason that causes electric leakage.The present invention can the fast detecting solar cell the position of leakage current, the convenient reason that forms leakage current of analyzing, still, structure is more complicated, complex operation, cost is higher, production efficiency is low.
The utility model content
The utility model is for the deficiencies in the prior art, a kind of reverse leakage flow detection device of solar battery sheet is provided, has realized the reverse leakage current of solar battery sheet is detected by simple operations, enhanced productivity, optimized production process, further improve the solar components quality.
In order to solve the problems of the technologies described above, the utility model by the following technical solutions:
A kind of reverse leakage flow detection device of solar battery sheet, the copper coin and the test pencil that comprise direct voltage source, current display device, carrying cell piece, the positive pole of described direct voltage source connects described current display device by wire, described current display device connects described test pencil by wire, and described copper coin connects the negative pole of described direct voltage source by wire.
Further, on described copper coin, carry heads cell piece.
Further, described test pencil nib touches the main grid line in cell piece front.
Further, described current display device is digital display ammeter.
Further, the long 200mm of described copper coin, wide 200mm, thick 2mm.
Further, described direct voltage source has the reverse voltage of 0-12V.
Further, described direct voltage source is provided with the voltage-regulation knob.
The utility model beneficial effect is: apply a reverse voltage by the positive and negative end of giving cell piece, the digital display ammeter of connecting in circuit is simultaneously measured the reverse leakage current of solar battery sheet, the cell piece that makes the reverse leakage current numerical value of detection be greater than 0.5A is sorted out, thereby provides guide effect for the performance that promotes solar cell.The utility model is simple in structure, easy to operate, and cost is lower, has both improved production efficiency and the quality of large-scale production, has optimized production technology, has improved again the solar components quality.
The accompanying drawing explanation
Fig. 1 is stereographic map of the present utility model;
Fig. 2 is circuit connection diagram of the present utility model;
In figure:
1, direct voltage source; 2, digital display ammeter; 3, cell piece; 4, copper coin; 5, test pencil.
Embodiment
Below in conjunction with Fig. 1 and Fig. 2, and further illustrate the technical solution of the utility model by embodiment.
The principle that reverse leakage current produces: solar battery sheet can divide 3 layers, be thin layer (being the N district), depletion layer (being PN junction), tagma (being the P district), for cell piece, can there be some harmful impurity and defects, may be that silicon chip itself has, may be also to cause in production technology, these harmful impurity and defects can play the effect in recombination center, can capture hole and electronics, make them compound, compound process is accompanied by the displacement of charge carrier all the time, having small electric current produces, the dark current produced by coating portion is referred to as the thin layer leakage current, the dark current produced by the tagma part is referred to as body leakage current.
Fig. 1 is stereographic map of the present utility model, Fig. 2 is circuit connection diagram of the present utility model, as depicted in figs. 1 and 2, the reverse leakage flow detection device of a kind of solar battery sheet that the utility model provides, comprise direct voltage source 1, current display device, copper coin 4 and the test pencil 5 of carrying cell piece, the positive pole of described direct voltage source 1 connects described current display device by wire, described current display device connects test pencil 5 by wire, described test pencil 5 nibs touch the main grid line in cell piece 3 fronts, on described copper coin 4, carry heads cell piece 3, the lower surface of described copper coin 4 connects the negative pole of described direct voltage source 1 by wire, wherein, described current display device is digital display ammeter 2, the long 200mm of described copper coin 4, wide 200mm, thick 2mm, described direct voltage source 1 can provide the reverse voltage of 0-12V, described direct voltage source 1 is provided with the voltage-regulation knob.
Concrete detecting step is: at first, cell piece 1 is faced up and is placed on copper coin 4, secondly, according to circuit connection diagram as shown in Figure 1, utilize wire to connect successively direct voltage source 1, digital display ammeter 2, test pencil 5, cell piece 3 and copper coin 4 form loop, wherein, test pencil 5 nib points touch the main grid line in described cell piece 3 fronts, again, the voltage-regulation knob of direct voltage source 1 is adjusted to zero-bit, after opening direct voltage source 1, progressively regulation voltage increases to 12V(± 0.2V), after digital display ammeter 2 shows numerical stability, read the reading of digital display ammeter 2 and by its record, finally the reverse leakage current reading of record is greater than to the cell piece go-on-go of 0.5A out.
The reverse leakage current structure of the detecting device of solar battery sheet of the present utility model is simple, easy to operate, and cost is lower, detects rapidly, has both improved production efficiency and the quality of large-scale production, has optimized production technology, has improved again the solar components quality.
What need statement is; above embodiment is only be used to explaining know-why of the present utility model; and can not be interpreted as by any way the restriction to the utility model protection domain; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (7)
1. the reverse leakage flow detection device of a solar battery sheet, it is characterized in that, the copper coin (4) and the test pencil (5) that comprise direct voltage source (1), current display device, carrying cell piece, the positive pole of described direct voltage source (1) connects described current display device by wire, described current display device connects described test pencil (5) by wire, and described copper coin (4) connects the negative pole of described direct voltage source (1) by wire.
2. the reverse leakage flow detection device of a kind of solar battery sheet according to claim 1, is characterized in that, described copper coin carries heads cell piece on (4).
3. the reverse leakage flow detection device of a kind of solar battery sheet according to claim 2, is characterized in that, described test pencil (5) nib touches the main grid line in cell piece front.
4. the reverse leakage flow detection device of a kind of solar battery sheet according to claim 1, is characterized in that, described current display device is digital display ammeter (2).
5. the reverse leakage flow detection device of a kind of solar battery sheet according to claim 2, is characterized in that, the long 200mm of described copper coin (4), wide 200mm, thick 2mm.
6. the reverse leakage flow detection device of a kind of solar battery sheet according to claim 1, is characterized in that, described direct voltage source (1) has the reverse voltage of 0-12V.
7. the reverse leakage flow detection device of a kind of solar battery sheet according to claim 1, is characterized in that, described direct voltage source (1) is provided with the voltage-regulation knob.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202362667U CN203310896U (en) | 2013-05-03 | 2013-05-03 | Solar energy cell sheet reverse leakage current detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202362667U CN203310896U (en) | 2013-05-03 | 2013-05-03 | Solar energy cell sheet reverse leakage current detection device |
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| CN203310896U true CN203310896U (en) | 2013-11-27 |
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| CN2013202362667U Expired - Fee Related CN203310896U (en) | 2013-05-03 | 2013-05-03 | Solar energy cell sheet reverse leakage current detection device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103645373A (en) * | 2013-12-27 | 2014-03-19 | 百力达太阳能股份有限公司 | Method for monitoring dark current |
| CN106817078A (en) * | 2016-12-28 | 2017-06-09 | 中国电子科技集团公司第十八研究所 | Reverse characteristic testing device for solar cell |
| CN108008238A (en) * | 2017-12-29 | 2018-05-08 | 广东正业科技股份有限公司 | A kind of lithium battery earth detector and method |
| CN109148332A (en) * | 2018-07-18 | 2019-01-04 | 凯盛光伏材料有限公司 | One kind is for testing photovoltaic module reverse current overload measurement platform |
-
2013
- 2013-05-03 CN CN2013202362667U patent/CN203310896U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103645373A (en) * | 2013-12-27 | 2014-03-19 | 百力达太阳能股份有限公司 | Method for monitoring dark current |
| CN106817078A (en) * | 2016-12-28 | 2017-06-09 | 中国电子科技集团公司第十八研究所 | Reverse characteristic testing device for solar cell |
| CN106817078B (en) * | 2016-12-28 | 2019-01-01 | 中国电子科技集团公司第十八研究所 | Reverse characteristic testing device for solar cell |
| CN108008238A (en) * | 2017-12-29 | 2018-05-08 | 广东正业科技股份有限公司 | A kind of lithium battery earth detector and method |
| CN109148332A (en) * | 2018-07-18 | 2019-01-04 | 凯盛光伏材料有限公司 | One kind is for testing photovoltaic module reverse current overload measurement platform |
| CN109148332B (en) * | 2018-07-18 | 2024-03-01 | 凯盛光伏材料有限公司 | Reverse current overload test bench for testing photovoltaic module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 215129 Suzhou high tech Zone, Jiangsu Province, Lu Shan Road, No. 199, No. Co-patentee after: Changshu Canadian Solar Inc. Patentee after: Artes sunshine Power Group Co. Ltd. Address before: 215028 Suzhou City, Jiangsu, Suzhou high tech Industrial Development Zone, deer mountain road No. 199 Co-patentee before: Changshu Canadian Solar Inc. Patentee before: Canadian (China) Investment Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20180503 |