CN205081759U - Testing arrangement of anti PID performance of control solar cell - Google Patents
Testing arrangement of anti PID performance of control solar cell Download PDFInfo
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- CN205081759U CN205081759U CN201520846054.XU CN201520846054U CN205081759U CN 205081759 U CN205081759 U CN 205081759U CN 201520846054 U CN201520846054 U CN 201520846054U CN 205081759 U CN205081759 U CN 205081759U
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- solar cell
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- objective table
- pid performance
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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 discloses a testing arrangement of anti PID performance of control solar cell, including the frame and set up being used for in the frame and place the objective table of being surveyed solar cell, its characterized in that: still including being used for accurate the removal the objective table of objective table removes the assembly, be used for the accuracy to provide the continuous sampling system of automation that test solution drips, be used for gathering test solution and drip the optics collection system of appearance and be used for the analysis and the processing the image information's that optics collection system gathered computer, optics collection system pass through the image information that the cable will gather and convey in real time to the computer. The utility model discloses a test contact angle is effectively monitored the anti PID performance of battery piece, improves the reliability of battery piece, and is easy and simple to handle, the precision is high.
Description
Technical field
The utility model relates to a kind of performance testing device of solar cell piece, particularly relate to a kind of testing apparatus monitoring the anti-PID performance of solar cell piece, for testing the anti-PID performance of the solar cell piece with hydrophily barrier layer and monitor, belong to solar cell production technical field.
Background technology
Along with photovoltaic generation occupies more and more important seat in world energy consumption, in actual application, electricity generation system can integrated multiple photovoltaic module, under assembly can be exposed to very high voltage, under long-term high-tension effect, there is leaky between glass and encapsulating material in assembly, make a large amount of electric charge and Na
+be enriched in cell piece surface, cause surface passivation antireflective coating to lose efficacy, PN junction lost efficacy subsequently, and finally make assembly property continuous decrement, this decay is called as current potential and brings out decay (PotentialInducedDegration), i.e. PID effect.The mechanism causing this type of to decay is many-sided, such as, under above-mentioned high-tension effect, occurs Ion transfer phenomenon in the encapsulating material of assembly battery and the material of assembly upper surface layer and undersurface layer; Hot carrier phenomenon is there is in battery; The reallocation of electric charge reduces the active layer of battery; Relevant circuit etch; Etc..In recent years, in solar cell application process, there occurs the case of many solar module power attenuations, have a strong impact on solar cell widely using and promoting in each application, therefore, of crucial importance to the PID monitoring of solar cell.
In order to effectively reduce PID effect, realize mainly through battery, assembly, system three aspects.Analyze from assembly end, main method is the EVA adopting anti-PID, uses the EVA of low vinyl acetate content to alleviate the generation of PID phenomenon; From system end, main method is module frame ground connection, inverter direct current section minus earth etc.; Analyze from battery-end, current research direction mainly comprises following two aspects: the refractive index in (1) raising reflector can reduce the generation of PID phenomenon effectively, and after the refractive index of antireflection layer is greater than 2.2, PID attenuation rate reduces.Many solar breeders are had also to find similar phenomenon at present in the relation test for cell piece and PID, so improving SiNx thin-film refractive index is one of means of anti-PID.(2) at cell piece Surface Creation one deck SiOx film as barrier layer, effectively can stop Na
+move to cell piece surface, thus avoid the decay of battery component power.
In prior art, by adopting the mode of ultraviolet ionization to generate ozone, ozone being oxidized silicon chip surface, forming the comparatively fine and close SiOx thin layer of one deck as barrier layer at silicon chip surface, thus stopping Na
+intrusion, and SiOx layer has good passivation effect, effectively can reduce the recombination rate on cell piece surface, and this SiOx layer is thinner, the tunneling effect of electronics clearly, a part of electric charge of cell piece surface enrichment can be led away, thus prevent from causing because of electric charge accumulation passivated reflection reducing to penetrate a layer decreased effectiveness, make cell piece have certain anti-PID ability.
But, under different process conditions, as ozone concentration, the SiOx layer compactness of formation and uniformity variant, anti-PID performance is also variant.Therefore, need to seek to contact and set up between different technology conditions and the anti-PID performance of SiOx layer formed effectively to monitor, thus reach the effect carrying out the anti-PID performance of management and control cell piece by Controlling Technology condition.
Summary of the invention
The utility model is in prior art, to the technical problem that the anti-PID performance of the solar cell piece with barrier layer cannot effectively, accurately be monitored, a kind of method of testing and the testing apparatus thereof of monitoring the anti-PID performance of solar cell piece are provided, accurately, easy, the anti-PID performance of testing solar battery sheet rapidly, simultaneously, easy to operate, reliability is high.
For this reason, the utility model adopts following technical scheme:
A kind of testing apparatus monitoring the anti-PID performance of solar cell piece, comprise frame and be arranged at the objective table for placing tested solar cell piece in frame, it is characterized in that: the objective table also comprised for accurately moving described objective table moves assembly, for accurately providing the automatic continued inlet system of test droplets, for the optical system for collecting of collecting test drop pattern and the computer of image information that gathers for optical system for collecting described in treatment and analysis, the image information collected is sent to computer by cable by optical system for collecting in real time.
Further, described objective table moves assembly and comprises stepping motor and controllor for step-by-step motor, and controllor for step-by-step motor, according to instruction, drives the running of stepping motor, automatically completes the arrival of position, testing site.
Further, described optical system for collecting comprises a high accuracy continuous print zoom not zoom microscope, the pocket video camera of high pixel and industrial backlight light source, described industrial backlight light source and video camera are arranged at the both sides of objective table respectively, and microscope is arranged at the front of video camera.
Further, the interval time that described video camera is taken pictures for twice is 8ms-12ms;
Further, described automatic continued inlet system comprises precise injection pump and syringe pump mobile system.
Further, the top of described precise injection pump is provided with exhaust nozzle.Can the volume of precision control drop, more precisely control reservoir quantity, and avoid the generation of bubble.
Compared with prior art, the beneficial effects of the utility model are:
(1) automatic measurement function is realized: gathered to computer by certain hour interval by image by video camera, automatically measured by contact angle;
(2) multiple test point can be selected, hydrophily detection is carried out to the zones of different on cell piece surface hydrophilicity barrier layer, thus judge the uniformity on hydrophily barrier layer, respectively choose a test point as each and center position can be selected at four angles of cell piece.
(3) optimization of sampling system: adopt precise injection pump, carry out auto injection, more precisely control reservoir quantity, and bubble can be avoided to produce.
Therefore, the utility model is by measuring the contact angle on solar cell piece surface, quantification monitoring is carried out to the anti-PID barrier layer of solar cell piece, test process is easy and simple to handle, quick, be applicable to the hydrophilic monitoring of production line cell piece, be conducive to follow-up hydrophily and PID correlation analyses, for the research of solar cell PID provides important evidence.And can carry out effective monitoring to the anti-PID performance of cell piece, Timeliness coverage is abnormal, reduces the generation of defective products, thus improves the reliability of cell piece.Easy and simple to handle, reliability is high, repeatable accuracy is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model testing apparatus;
Fig. 2 is the structural representation of the utility model testing apparatus sampling system;
In figure, 1 is frame, and 2 is objective table, and 3 move assembly for objective table, and 4 is automatic continued inlet system, and 41 is precise injection pump, and 42 is syringe pump mobile system, and 43 is exhaust nozzle, and 5 is optical system for collecting, and 51 is microscope; 52 is video camera; 53 is industrial backlight light source; 6 is computer, and 7 is cable.
Embodiment
Be further described in detail structure of the present utility model below in conjunction with the drawings and specific embodiments, part same as the prior art in the utility model is with reference to prior art.
As Fig. 1, shown in 2, the testing apparatus of the anti-PID performance of monitoring solar cell piece of the present utility model, comprise frame 1 and be arranged at the objective table 2 for placing tested solar cell piece in frame, objective table for accurately moving described objective table moves assembly 3, for accurately providing the automatic continued inlet system 4 of test droplets, for the optical system for collecting 5 of collecting test drop pattern and the computer 6 for the image information of optical system for collecting collection described in treatment and analysis, the image information collected is sent to computer by cable 7 by optical system for collecting in real time,
Objective table moves assembly 3 and comprises stepping motor and controllor for step-by-step motor, and controllor for step-by-step motor, according to instruction, drives the running of stepping motor, automatically completes the arrival of position, testing site.
Optical system for collecting 5 comprises a high accuracy continuous print zoom not zoom microscope 51, the pocket video camera of high pixel 52 and industrial backlight light source 53, described industrial backlight light source 53 and video camera 52 are arranged at the both sides of objective table 2 respectively, microscope 51 is arranged at the front of video camera 52, and industrial backlight light source 53 carries out brightness regulation by light-source brightness adjuster.The interval time that video camera 52 is taken pictures for twice is 10ms.Because solar cell piece contact angle angle after ozone treatment is less, shortens and take pictures for twice the acquisition interval time, more effectively can test it and can shorten to 10ms;
Automatic continued inlet system 4 comprises precise injection pump 41 and syringe pump mobile system 42, and the top of precise injection pump is provided with exhaust nozzle 43.If have bubble in discovery injector, by exhaust nozzle, bubble is discharged, the impact of bubble during fluid injection can be avoided.
Describe method of testing of the present utility model for SiOx layer as hydrophily barrier layer below, comprise the steps:
S1: using distilled water as tested media, the drop getting same volume is measured, by regulating O3 concentration, the contact angle on the solar cell piece surface obtained under recording different O3 concentration conditions, the solar cell piece with different contact angle is positioned over environmental test chamber test, obtain the PID attenuation rate that the solar cell piece of different contact angle is corresponding, set up the standard database A with the PID attenuation rate corresponding to solar cell piece of different contact angle;
S2: according to the standard database A set up in step S1, formulates contact angle management and control specification;
S3: choose N number of measurement point on tested solar cell piece surface, N be more than or equal to 2 natural number, the contact angle of test different measuring point, in the present embodiment, N equals 5, each and center position in four angles that 5 measurement points lay respectively at cell piece; Be tested drop with the liquid identical with step S1, the drop getting same volume is measured, test the contact angle of those measurement points, compare with the data in standard database A, and according to the management and control specification formulated in step S2, draw the conclusion whether tested solar cell piece is qualified, thus effective management and control is carried out to the uniformity of solar cell piece hydrophily and SiOx layer.
By monitoring the hydrophily of solar battery surface, the object of the anti-PID of monitoring solar cell piece can be reached.Hydrophily refers to the molecule with polar group, has larger affine performance, can attract hydrone or be dissolved in water glassware for drinking water, the surface of solid material that this quasi-molecule is formed, easily soak by water.Contact angle refers to a drop in a solid level plane, and the tangent line of the liquid-vapor interface done at gas, liquid, solid three-phase point of interface place is through the angle liquid and solid-liquid boundary line.If θ < 90 °, then the surface of solids has hydrophily, i.e. liquid more wetting solid, and its angle is less, then represent that wetability is better.So contact angle can as judging hydrophilic foundation.Therefore, if be distributed with even, the fine and close SiOx film of one deck on cell piece surface, then cell piece surface has good hydrophily, and anti-PID performance is strong; On the contrary, if the SiOx film on cell piece surface is formed bad, then the hydrophily on cell piece surface is poor, and anti-PID performance is weak.Thus the hydrophily on monitoring battery sheet surface can the anti-PID performance of monitoring battery sheet effectively.
By the anti-PID performance on solar cell piece anti-PID barrier layer under test different technology conditions, formulate standard database, thus the process conditions in the forming process of regulation and control solar cell piece barrier layer, obtain solar cell piece of good performance.Test process is easy and simple to handle, quick, and reliability is high, repeatable accuracy is high, and in the process of producing, Timeliness coverage is abnormal, reduces the generation of defective products, thus improves the reliability of cell piece.
Although the present embodiment is described using SiOx layer as hydrophily barrier layer, the utility model also may be used for the detection that other have hydrophilic barrier layer.
Obviously, described embodiment is only a part of embodiment of the present utility model, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the utility model protection.
Claims (5)
1. monitor the testing apparatus of the anti-PID performance of solar cell piece for one kind, comprise frame and be arranged at the objective table for placing tested solar cell piece in frame, it is characterized in that: the objective table also comprised for accurately moving described objective table moves assembly, for accurately providing the automatic continued inlet system of test droplets, for the optical system for collecting of collecting test drop pattern and the computer of image information that gathers for optical system for collecting described in treatment and analysis, the image information collected is sent to computer by cable by optical system for collecting in real time.
2. the testing apparatus of the anti-PID performance of monitoring solar cell piece according to claim 1, it is characterized in that: described objective table moves assembly and comprises stepping motor and controllor for step-by-step motor, controllor for step-by-step motor is according to instruction, drive the running of stepping motor, automatically complete the arrival of position, testing site.
3. the testing apparatus of the anti-PID performance of monitoring solar cell piece according to claim 1, it is characterized in that: described optical system for collecting comprises a high accuracy continuous print zoom not zoom microscope, the pocket video camera of high pixel and industrial backlight light source, described industrial backlight light source and video camera are arranged at the both sides of objective table respectively, and microscope is arranged at the front of video camera.
4. the testing apparatus of the anti-PID performance of monitoring solar cell piece according to claim 3, is characterized in that: the interval time that described video camera is taken pictures for twice is 8ms-12ms.
5. the testing apparatus of the anti-PID performance of monitoring solar cell piece according to claim 1, it is characterized in that: described automatic continued inlet system comprises precise injection pump and syringe pump mobile system, the top of described precise injection pump is provided with exhaust nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520846054.XU CN205081759U (en) | 2015-10-28 | 2015-10-28 | Testing arrangement of anti PID performance of control solar cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520846054.XU CN205081759U (en) | 2015-10-28 | 2015-10-28 | Testing arrangement of anti PID performance of control solar cell |
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| CN205081759U true CN205081759U (en) | 2016-03-09 |
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| CN201520846054.XU Withdrawn - After Issue CN205081759U (en) | 2015-10-28 | 2015-10-28 | Testing arrangement of anti PID performance of control solar cell |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106301215A (en) * | 2016-08-25 | 2017-01-04 | 安徽凯达能源科技有限公司 | The antifouling simulation box of solar panel |
| CN111123132A (en) * | 2019-12-30 | 2020-05-08 | 国联汽车动力电池研究院有限责任公司 | Method for measuring contact resistance of battery |
-
2015
- 2015-10-28 CN CN201520846054.XU patent/CN205081759U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106301215A (en) * | 2016-08-25 | 2017-01-04 | 安徽凯达能源科技有限公司 | The antifouling simulation box of solar panel |
| CN106301215B (en) * | 2016-08-25 | 2018-06-22 | 安徽凯达能源科技有限公司 | The antifouling simulation box of solar panel |
| CN111123132A (en) * | 2019-12-30 | 2020-05-08 | 国联汽车动力电池研究院有限责任公司 | Method for measuring contact resistance of battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160309 Effective date of abandoning: 20170419 |