CN201673125U - Solar battery electroluminescence image defect detector - Google Patents
Solar battery electroluminescence image defect detector Download PDFInfo
- Publication number
- CN201673125U CN201673125U CN2010201971594U CN201020197159U CN201673125U CN 201673125 U CN201673125 U CN 201673125U CN 2010201971594 U CN2010201971594 U CN 2010201971594U CN 201020197159 U CN201020197159 U CN 201020197159U CN 201673125 U CN201673125 U CN 201673125U
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- heat conduction
- solar panel
- camera
- conduction platform
- temperature control
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- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
A solar battery electroluminescence image defect detector relates to a solar battery detector and is fast and effective. The solar battery electroluminescence image defect detector is provided with a solar panel, a heat conduction platform, a voltage stabilizing power source, a temperature control heater, a 850nm filter, a refrigeration type CCD camera, an adjusting support, an image acquisition card, a computer and a base, the solar panel is disposed on the heat conduction platform, the heat conduction platform and the adjusting support are mounted on the base, the temperature control heater is arranged under the heat conduction platform, is connected with the solar panel and controls temperature of the solar panel arranged on the heat conduction platform, the filter is mounted at the front of the lens of the camera, and the camera is disposed on the adjusting support, located above the solar battery and connected with a computer via the image acquisition card.
Description
Technical field
The utility model relates to a kind of solar cell detector, especially relates to a kind of solar battery electroluminescence image defect detector that the latent defect and the external defective of solar cell can be distinguished out.
Background technology
May produce various defectives in the manufacture of solar cells process, for example there are latent defects such as impurity in the dislocation of silicon materials itself, tomography and PN junction, external defectives such as electrode broken string, the electrode that also has silicon materials to produce in being made into the solar cell process comes off, battery fine fisssure.These defectives have all had a strong impact on the work efficiency of solar cell, therefore how fast and effeciently to detect these defectives, and quality control has crucial meaning to solar cell.
Chinese patent ZL200820007299.3 discloses a kind of pick-up unit that detects the recessive defective of solar cell based on solar cell at the low-light level imaging under the bias voltage.Because the extremely faint electro optical phenomenon that even do not produce of electroluminescence light intensity that solar cell latent defect and external fault location produce under forward bias, these defect areas all demonstrate the extremely weak image of gray level in the corresponding region of this device imaging picture.Therefore this device can only detect the position of the recessive defective of solar cell effectively, but fails to distinguish effectively the type of defective.Some latent defects of solar cell such as the dislocation of silicon materials itself, tomography, crystal boundary etc. are to be processed in the manufacture of solar cells process uncontrollable at silicon chip, and some external defectives of solar cell such as electrode broken string, electrode come off, the battery fine fisssure is caused in silicon chip is processed into the production run of solar cell often, and these external defectives can be avoided by finding out its corresponding production technology and being optimized.This device does not provide the reverse biased device yet, and the zone that the solar cell PN junction is complete is being not produce electro optical phenomenon on the lower side instead, and there is electro optical phenomenon in some comparatively tangible PN junction impurity defects under reverse biased.If solar cell untouched edge or cut edge and totally so just not cause the battery circumferential PN junction to have certain impurity defect after having made aluminum back electric field for example, and these defectives instead can produce electro optical phenomenon on the lower side at height, utilize this point to detect whether cut edge clean and PN junction extrinsic region at the anti-battery electric image formation on the lower side of height, therefore reversed bias voltage is provided is very valuable in defects of solar battery detects.
Summary of the invention
The purpose of this utility model is to provide a kind of solar battery electroluminescence fast and effectively (EL) image defect detector.
The utility model is provided with solar panel, the heat conduction platform, stabilized voltage supply, the temperature control well heater, the 850nm filter plate, refrigeration-type CCD camera, regulate support, image pick-up card, computer and base, solar panel is located on the heat conduction platform, heat conduction platform and adjusting support are installed on the base, the temperature control well heater is located under the heat conduction platform, the temperature control well heater is connected with solar panel, the temperature control well heater carries out temperature control to the solar panel that is located on the heat conduction platform, before filter plate is installed in the camera lens of camera, camera is located to be regulated on the support, camera is in the solar panel top, and camera is connected with computer through image pick-up card.
Described temperature controlled scope can be 25～300 ℃.
Described stabilized voltage supply can adopt transistor stabilized power supply.
Described adjusting support can adopt the adjusting support of front and back adjusting up and down.
Outstanding technique effect of the present utility model is as follows:
The utility model can effectively detect solar cell fast and has external defective applying under the forward bias the utility model, as electrode defects, fine fisssure; Latent defect as the position of defectives such as dislocation, fault, and is distinguished defect type by temperature to the influence of inherent and external fault location electroluminescence intensity.Simultaneously the utility model can effectively detect solar cell PN junction impurity defect fast under the reverse biased applying.Having solved crystal silicon solar energy battery twilight image detector fails effectively to tell defect type and does not apply reverse biased and detect the problem of PN junction impurity defect.
The utility model can carry out imaging to solar battery electroluminescence apace, imaging time is less than 1s, and utilize under positive reverse bias imaging and temperature the influence of fault location electroluminescence intensity to be picked out the type of defects of solar battery, can be widely used in the detection of manufacture of solar cells process, pick out defect type timely and effectively then to causing the corresponding defective workmanship of defects of solar battery in time to optimize.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
In Fig. 1, the 1st, solar panel, the 2nd, the heat conduction platform, the 3rd, the transistor stabilized power supply of positive negative bias can be provided, the 4th, the temperature control well heater, the 5th, the 850nm filter plate, the 6th, refrigeration-type CCD camera, the 7th, regulate support, the 8th, image pick-up card, the 9th, computer, the 10th, base.
Embodiment
Below in conjunction with drawings and Examples the bright instrument of utility model is further specified.
As shown in Figure 1, detected solar panel 1 is placed on the thermostable heat-conductive platform 2, can provide transistor stabilized power supply 3 both positive and negative polarities of positive negative bias to be connected with solar panel 1 corresponding both positive and negative polarity, heat conduction platform (can adopt the thermostable heat-conductive platform) 2 and adjusting support 7 are installed on the base 10, temperature control well heater 4 is close to below the thermostable heat-conductive platform 2, refrigeration-type CCD camera 6 is placed in to be regulated on the support 7, and image pick-up card 8 couples together refrigeration-type CCD camera 6 and computer 9.Transistor stabilized power supply 3 output voltages and temperature control well heater 4 temperature adjustment shelves are transferred to deep low gear, connect the power supply of transistor stabilized power supply 3, temperature control well heater 4, refrigeration-type CCD camera 6, computer 9 then, open the image acquisition card software from computer 9 afterwards, at this moment can on computer 9, observe the image of solar cell, adjust the position of adjusting support 7 and the focal length of refrigeration-type CCD camera 6 again, make and refrigeration-type CCD camera 6 energy shape library solar panels 1 central authorities then 850nm filter plate 5 is installed in refrigeration-type CCD camera 6 camera lens fronts.Slowly regulate transistor stabilized power supply 3 output voltages this moment, when being applied to a certain degree forward or backwards voltage, can observing the electroluminescence image of solar panel 1 and can preserve present image on computer 9 screens.Slowly regulate temperature control well heater 4 temperature shelves then, when being heated to uniform temperature, can observe the variation of solar panel 1 electroluminescence intensity, and image preserved, electroluminescence image when not heating is analyzed then, further distinguish the type of defective, electroluminescence intensity in latent defect place strengthens with the rising of temperature under forward bias, and external fault location electroluminescence intensity is subjected to Temperature Influence hardly.
Regulate the adjusting support that support 7 adopts front and back adjusting up and down.
Claims (3)
1. solar battery electroluminescence image defect detector, it is characterized in that being provided with solar panel, the heat conduction platform, stabilized voltage supply, the temperature control well heater, the 850nm filter plate, refrigeration-type CCD camera, regulate support, image pick-up card, computer and base, solar panel is located on the heat conduction platform, heat conduction platform and adjusting support are installed on the base, the temperature control well heater is located under the heat conduction platform, the temperature control well heater is connected with solar panel, the temperature control well heater carries out temperature control to the solar panel that is located on the heat conduction platform, before filter plate is installed in the camera lens of camera, camera is located to be regulated on the support, camera is in the solar panel top, and camera is connected with computer through image pick-up card.
2. a kind of solar battery electroluminescence image defect detector as claimed in claim 1 is characterized in that described stabilized voltage supply is transistor stabilized power supply.
3. a kind of solar battery electroluminescence image defect detector as claimed in claim 1 is characterized in that the adjusting support of described adjusting support for front and back adjusting up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201971594U CN201673125U (en) | 2010-05-20 | 2010-05-20 | Solar battery electroluminescence image defect detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201971594U CN201673125U (en) | 2010-05-20 | 2010-05-20 | Solar battery electroluminescence image defect detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201673125U true CN201673125U (en) | 2010-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201971594U Expired - Fee Related CN201673125U (en) | 2010-05-20 | 2010-05-20 | Solar battery electroluminescence image defect detector |
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| Country | Link |
|---|---|
| CN (1) | CN201673125U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105406820A (en) * | 2015-12-23 | 2016-03-16 | 苏州普德智慧能源有限公司 | Bracket apparatus for photovoltaic module EL detection |
| CN107748303A (en) * | 2017-09-15 | 2018-03-02 | 西藏自治区能源研究示范中心 | A kind of portable photovoltaic device electric performance test system |
-
2010
- 2010-05-20 CN CN2010201971594U patent/CN201673125U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105406820A (en) * | 2015-12-23 | 2016-03-16 | 苏州普德智慧能源有限公司 | Bracket apparatus for photovoltaic module EL detection |
| CN107748303A (en) * | 2017-09-15 | 2018-03-02 | 西藏自治区能源研究示范中心 | A kind of portable photovoltaic device electric performance test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101215 Termination date: 20160520 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |