CN102540045A - Detection device for defective products of solar cells - Google Patents
Detection device for defective products of solar cells Download PDFInfo
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- CN102540045A CN102540045A CN2012100031392A CN201210003139A CN102540045A CN 102540045 A CN102540045 A CN 102540045A CN 2012100031392 A CN2012100031392 A CN 2012100031392A CN 201210003139 A CN201210003139 A CN 201210003139A CN 102540045 A CN102540045 A CN 102540045A
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Abstract
The invention relates to a detection device for defective products of solar cells, and discloses an infrared imaging detection device for defective products of solar cells. The infrared imaging detection device comprises a computer (2), a CV/CC power supply (3) and an infrared imaging device (5), wherein the CV/CC power supply (3) is connected with the infrared imaging device (5), the infrared imaging device (5) is connected with the computer (2), the CV/CC power supply (3) applies a reverse current, defective products are reflected by temperature fluctuation on the surface of the battery under the action of an external electric field through infrared imaging and are subjected to infrared capturing as well as output through the computer for being analyzed, thus the defective products of the solar cells are detected. According to the technical scheme of the invention, reverse electricity leakage points on the solar cells can be detected and countermeasure is obtained through analysis so that the occurring rate of defective reverse current is improved and finally reduced, thus cost is reduced; and by combining infrared imaging with reverse current measurement, electricity leakage condition of the solar cells is completely detected.
Description
Technical field
The present invention relates to a kind of pick-up unit of solar battery sheet defective products, relate in particular to a kind of infrared imaging pick-up unit of solar battery sheet defective products.
Background technology
The solar battery sheet inverse current is meant the leakage current of battery P-N knot, has reacted the quality of P-N knot, and the leakage current increase can make the parallel resistance of battery reduce, thereby fill factor, curve factor is descended, and causes the useful power of battery to descend.Present manufacturer's usability technology causes the factor of damage a lot of to the P-N knot, and (incidence of inverse current value 1.0 ~ 2.5A) is always more than 5%, and the incidence of burning article (the inverse current value surpasses 2.5A) is more than 1.5% for the inverse current defective products.
Summary of the invention
The present invention is directed to deficiency of the prior art; Provide a kind of and can check out the reverse leakage point on the battery sheet and give countermeasure analysis and finally reduce the bad incidence of inverse current with improving, thus reduce cost the pick-up unit of solar battery sheet defective products.
In order to solve the problems of the technologies described above, the present invention is able to solve through following technical proposals.
A kind of pick-up unit of solar battery sheet defective products comprises CV/CC power supply, computer and infrared thermoviewer, and the CV/CC power supply connects infrared thermoviewer, and infrared thermoviewer connects computer, and infrared thermoviewer has the data output function.
As preferably, the pixel of infrared thermoviewer is 384*288, can tell the thin grid line of solar battery sheet.
As preferably, the CV/CC power supply can apply inverse current, and top electrode links to each other with the positive pole of CV/CC power supply, and bottom electrode links to each other with the negative pole of CV/CC power supply.
As preferably, computer comprises display and main frame, and computer is accepted the signal of infrared thermoviewer and handled, and display shows its image.
As preferably, also comprise camera bellows, avoid the thermal source influence of surrounding enviroment.
As preferably, be provided with the clamping platform in the camera bellows, on the clamping platform solar battery sheet can be installed.Infrared thermoviewer also is located at camera bellows inside.
As preferably, the clamping platform is located at the camera bellows bottom, and infrared thermoviewer is located at the camera bellows top.
As preferably, the clamping platform comprises base plate, and solar battery sheet is installed on the base plate.
As preferably, be provided with epoxy resin board above the base plate, the epoxy resin board periphery is provided with aluminium foil.
As preferably, epoxy resin thickness of slab 0.3mm, the thick 20um of aluminium foil.
As preferably, be provided with cantilever above the solar battery sheet, the cantilever top is provided with cylinder, and cylinder is provided with the axis of guide, and cantilever is connected on the cylinder through the axis of guide.
As preferably, cantilever is provided with probe base, and gold-plated probe is installed in the probe base, and solar battery sheet comprises the main grid line, and gold-plated probe is located at main grid line top.
As preferably, cantilever is copper cantilever.Base plate is copper base plate.
According to technical scheme of the present invention; The reverse leakage point on the battery sheet be can check out and countermeasure analysis and the final bad incidence of inverse current that reduces of improvement given; Thereby reduce cost, infrared imaging and reverse-current metering are combined, thereby check the electric leakage situation of battery sheet comprehensively.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a detection schematic diagram of the present invention.
Fig. 3 is the clamping synoptic diagram of solar battery sheet.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail.
The detection principle of solar battery sheet defective products: solar battery sheet 1 comprises N district 11 and P district 12, and the interface in N district 11 and P district 12 forms the space charge region and claims PN junction 13.Do not having under the condition of illumination, adding reverse voltage (N district 11 just connects, and P district 12 connects negative) for PN junction 13; Have the generation of inverse current this moment; Most of inverse current flows through from PN junction 13 spot failures, and electric current flows through and has the heat generation, and the temperature at PN junction 13 spot failures can raise like this.
Heat with the generation of infrared imaging appearance 5 detecting temperatures; Image color and follow-up of hot issues Presentation Function through screen display can be judged the heating situation; Observe the temperature distribution image on the solar battery sheet 1, therefrom find the bad point of inverse current on the solar battery sheet 1.Infrared thermography 5 is a kind ofly to survey infrared heat through noncontact, and its conversion is generated heat picture and temperature value, and then is presented on the display 21 of computer 2, and a kind of checkout equipment that can calculate temperature value.
The pick-up unit of solar battery sheet defective products comprises CV/CC power supply, infrared thermoviewer, computer, camera bellows.
CV/CC power supply 3 can apply inverse current.Top electrode links to each other with the positive pole of CV/CC power supply 3, and bottom electrode links to each other with the negative pole of CV/CC power supply 3.
Computer 2 comprises display 21 and main frame 22.Computer 2 acceptance pattern pictures are also handled.
Solar battery sheet 1 peripheral thermal source can change infrared imaging effect, is placed in the camera bellows 4 to measure, and then can avoid the thermal source influence of surrounding enviroment.Camera bellows 4 comprises clamping platform 41.
The test top electrode adopts gold-plated probe 65, and gold-plated probe 65 is installed in the probe base 64 of cantilever 63, and cantilever 63 is installed on the cylinder 61 through the axis of guide 62, and gold-plated probe 65 just in time is pressed on the main grid line 13 of solar battery sheet 1 when pressing down.Cantilever 63 is copper cantilevers, as electric pole plate.
The base plate 73 of bottom of the present invention test board adopts copper base plate.Base plate 73 tops are provided with the thick epoxy resin board of a slice 0.3mm 71, slow down heat conduction, and the aluminium foil 72 that on epoxy resin board 71, is stained with one deck 20um simultaneously is used for conduction, makes final radiating effect reach optimum condition like this.Adopt the heat radiation of copper battery lead plate too fast, can cause bad some temperature to raise not obvious and can't detect problem; Adopt resin plate, slow because of dispelling the heat again, the hot zone is excessive, also can influence the accuracy that back a slice solar battery sheet is measured.
In a word, the above is merely preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to the covering scope of patent of the present invention.
Claims (10)
1. the pick-up unit of a solar battery sheet defective products; Comprise CV/CC power supply (3); It is characterized in that: also comprise computer (2) and infrared thermoviewer (5); CV/CC power supply (3) connects infrared thermoviewer (5), and infrared thermoviewer (5) connects computer (2), and infrared thermoviewer (5) has the data output function.
2. the pick-up unit of a kind of solar battery sheet defective products according to claim 1 is characterized in that: computer (2) comprises display (21), and computer (2) is accepted the signal of infrared thermoviewer (5) and handled, display (21) display image.
3. the pick-up unit of a kind of solar battery sheet defective products according to claim 1 is characterized in that: also comprise camera bellows (4), be provided with clamping platform (41) and infrared thermoviewer (5) in the camera bellows (4).
4. the pick-up unit of a kind of solar battery sheet defective products according to claim 3; It is characterized in that: clamping platform (41) is located at camera bellows (4) bottom; Infrared thermoviewer (5) is located at camera bellows (4) top, and clamping platform (41) is gone up solar battery sheet (1) is installed.
5. the pick-up unit of a kind of solar battery sheet defective products according to claim 3 is characterized in that: clamping platform (41) comprises base plate (73), and solar battery sheet (1) is installed on the base plate (73).
6. the pick-up unit of a kind of solar battery sheet defective products according to claim 5 is characterized in that: base plate (73) top is provided with epoxy resin board (71), and epoxy resin board (71) periphery is provided with aluminium foil (72).
7. the pick-up unit of a kind of solar battery sheet defective products according to claim 6 is characterized in that: the thick 0.3mm of epoxy resin board (71), the thick 20um of aluminium foil (72).
8. the pick-up unit of a kind of solar battery sheet defective products according to claim 1; It is characterized in that: solar battery sheet (1) top is provided with cantilever (63); Cantilever (63) top is provided with cylinder (61); Cylinder (61) is provided with the axis of guide (62), and cantilever (63) is connected on the cylinder (61) through the axis of guide (62).
9. the pick-up unit of a kind of solar battery sheet defective products according to claim 8; It is characterized in that: cantilever (63) is provided with probe base (64); Gold-plated probe (65) is installed in the probe base (64); Solar battery sheet (1) comprises main grid line (13), and gold-plated probe (64) is located at main grid line (13) top.
10. the pick-up unit of a kind of solar battery sheet defective products according to claim 8 is characterized in that: cantilever (63) is copper cantilever, and base plate (73) is copper base plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100031392A CN102540045A (en) | 2012-01-06 | 2012-01-06 | Detection device for defective products of solar cells |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100031392A CN102540045A (en) | 2012-01-06 | 2012-01-06 | Detection device for defective products of solar cells |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103197221A (en) * | 2013-03-06 | 2013-07-10 | 浙江正泰太阳能科技有限公司 | Detection method of photovoltaic cell |
| CN103885474A (en) * | 2012-12-24 | 2014-06-25 | 浙江鸿禧光伏科技股份有限公司 | Classification detection test machine black box constant temperature adjusting method |
| CN104467663A (en) * | 2014-11-21 | 2015-03-25 | 河海大学常州校区 | System and method for detecting photovoltaic hot spot damage solar cell leak currents |
| CN108204861A (en) * | 2016-12-16 | 2018-06-26 | 比亚迪股份有限公司 | For detecting the temperature measuring equipment of PTC cores and there is its detection device |
| CN108596903A (en) * | 2017-09-27 | 2018-09-28 | 广东产品质量监督检验研究院（国家质量技术监督局广州电气安全检验所、广东省试验认证研究院、华安实验室） | A kind of defect inspection method of the black surround and fragment of solar battery sheet |
| CN109342915A (en) * | 2018-08-29 | 2019-02-15 | 佛山市国星半导体技术有限公司 | A kind of detection method for the LED chip that leaks electricity |
| CN111007408A (en) * | 2019-12-12 | 2020-04-14 | 国联汽车动力电池研究院有限责任公司 | Soft package lithium ion battery edge voltage defect detection, analysis and repair method and device |
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| CN201975410U (en) * | 2010-06-11 | 2011-09-14 | 深圳市创益科技发展有限公司 | Device for burning off defects of amorphous silicon solar cell |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103885474A (en) * | 2012-12-24 | 2014-06-25 | 浙江鸿禧光伏科技股份有限公司 | Classification detection test machine black box constant temperature adjusting method |
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| CN103197221B (en) * | 2013-03-06 | 2015-10-07 | 浙江正泰太阳能科技有限公司 | Detection method of photovoltaic cell |
| CN104467663A (en) * | 2014-11-21 | 2015-03-25 | 河海大学常州校区 | System and method for detecting photovoltaic hot spot damage solar cell leak currents |
| CN104467663B (en) * | 2014-11-21 | 2017-02-01 | 河海大学常州校区 | System and method for detecting photovoltaic hot spot damage solar cell leak currents |
| CN108204861A (en) * | 2016-12-16 | 2018-06-26 | 比亚迪股份有限公司 | For detecting the temperature measuring equipment of PTC cores and there is its detection device |
| CN108204861B (en) * | 2016-12-16 | 2019-11-08 | 比亚迪股份有限公司 | For detecting the temperature measuring equipment of PTC core and with its detection device |
| CN108596903A (en) * | 2017-09-27 | 2018-09-28 | 广东产品质量监督检验研究院（国家质量技术监督局广州电气安全检验所、广东省试验认证研究院、华安实验室） | A kind of defect inspection method of the black surround and fragment of solar battery sheet |
| CN108596903B (en) * | 2017-09-27 | 2022-06-03 | 广东产品质量监督检验研究院（国家质量技术监督局广州电气安全检验所、广东省试验认证研究院、华安实验室） | Method for detecting defects of black edges and fragments of solar cell |
| CN109342915A (en) * | 2018-08-29 | 2019-02-15 | 佛山市国星半导体技术有限公司 | A kind of detection method for the LED chip that leaks electricity |
| CN111007408A (en) * | 2019-12-12 | 2020-04-14 | 国联汽车动力电池研究院有限责任公司 | Soft package lithium ion battery edge voltage defect detection, analysis and repair method and device |
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