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A method for monitoring the anti-pid performance of solar cells and its testing device

A solar cell and testing device technology, which is applied in measuring devices, photovoltaic system monitoring, photovoltaic power generation, etc., can solve the problem that the anti-PID performance of solar cells cannot be monitored effectively and accurately, so as to reduce the occurrence of defective products , high repeatability and high reliability

Active Publication Date: 2017-04-19
TRINA SOLAR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the technical problem in the prior art that the anti-PID performance of solar cells with a barrier layer cannot be effectively and accurately monitored, the present invention provides a testing method and a testing device for monitoring the anti-PID performance of solar cells, which are accurate, Simple and fast test of the anti-PID performance of solar cells, at the same time, easy to operate and high reliability

Method used

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  • A method for monitoring the anti-pid performance of solar cells and its testing device
  • A method for monitoring the anti-pid performance of solar cells and its testing device

Examples

Experimental program
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Embodiment 1

[0032] This embodiment is described by taking the SiOx layer as an example of the hydrophilic barrier layer.

[0033] The method for monitoring the anti-PID performance of solar cells of the present invention comprises the steps:

[0034] S1: Take distilled water as the test medium, take the same volume of liquid droplets for measurement, adjust the O3 concentration, record the contact angle of the solar cell surface obtained under different O3 concentration conditions, and place the solar cells with different contact angles in the environment The test chamber is tested to obtain the PID attenuation rates corresponding to solar cells with different contact angles, and establish a standard database A of the PID attenuation rates corresponding to solar cells with different contact angles;

[0035] S2: According to the standard database A established in step S1, formulate contact angle control specifications;

[0036] S3: Select N measurement points on the surface of the solar c...

Embodiment 2

[0041] Such as figure 1 , 2 As shown, the test device for monitoring the anti-PID performance of solar cells of the present invention includes a frame 1 and an object stage 2 for placing the measured solar cells on the frame, for accurately moving the object The stage moving assembly 3, the automatic continuous sampling system 4 for accurately providing the test droplet, the optical collection system 5 for collecting the shape of the test droplet, and the optical collection system for analyzing and processing the collection The computer 6 of the image information, the optical acquisition system transmits the image information collected to the computer in real time through the cable 7;

[0042] The stage moving assembly 3 includes a stepping motor and a stepping motor controller, and the stepping motor controller drives the operation of the stepping motor according to instructions, and automatically completes the arrival of the test point.

[0043] The optical acquisition sys...

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Abstract

The invention discloses a method for monitoring solar cell piece anti-PID performance. The method comprises the following steps: S1) adjusting process conditions of a forming process of a hydrophilic barrier layer on the surface of a solar cell piece, testing contact angles of the hydrophilic barrier layer on the surface of the solar cell piece obtained under different process conditions, placing the solar cell pieces having different contact angles to an environment test chamber for testing to obtain corresponding anti-PID performance attenuation rates of the solar cell pieces having different contact angles, and establishing a standard database A of the anti-PID performance attenuation rates corresponding to the solar cell pieces having different contact angles; S2) making contact angle control specifications according to the standard database A established in the step S1); and S3) testing the solar cell pieces and carrying out control according to the control specifications and the like. Meanwhile, the invention discloses a test device for monitoring the solar cell piece anti-PID performance. According to the method and test device for monitoring the anti-PID performance of the solar cell pieces, effective monitoring is carried out on the anti-PID performance of the solar cell pieces by testing the contact angles, so that the reliability of the cells is improved; and effects of easy operation and high precision are achieved.

Description

technical field [0001] The present invention relates to a performance testing method and device of a solar cell, in particular to a method for monitoring the anti-PID performance of a solar cell and a testing device thereof, which are used for the anti-PID performance of a solar cell with a hydrophilic barrier layer Performance testing and monitoring belong to the technical field of solar cell production. Background technique [0002] As photovoltaic power generation occupies an increasingly important position in the world's energy consumption, in the actual application process, a power generation system will integrate multiple photovoltaic modules, and the modules will be exposed to very high voltage. , There is a leakage phenomenon between the glass and the packaging material in the module, making a large amount of charge and Na + Concentrated on the surface of the cell, it causes the failure of the surface passivation anti-reflection film, followed by the failure of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02S50/10G01N21/84
CPCY02E10/50
Inventor 王兵顾鹏张丰军华征王武林
Owner TRINA SOLAR CO LTD