Detecting device and detecting method for edge wet leakage property and long-term reliability of photovoltaic component
A technology for photovoltaic modules and detection devices, which is used in measurement devices, measurement of electricity, and measurement of electric variables, etc., can solve the problem that it cannot meet the requirements for reliability detection of photovoltaic modules wet leakage, cannot provide important information for designers and experimenters, and cannot accurately measure Wet leakage current and other problems of products, to achieve the effect of strong practicability, high safety and convenient operation
Active Publication Date: 2012-07-11
TRINASOLAR CO LTD
View PDF6 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In the second method, the detection methods and related equipment in the IEC61215 and UL1703 standards can no longer meet the reliability detection requirements of long-term wet leakage of photovoltaic modules, and its introduction of new EVA and silicone materials, module stack design and reliability research , unable to provide designers and experimenters with more important information
At present, ordinary wet leakage testers or the test methods mentioned in the IEC61215 and UL1703 standards can only be used to detect the wet leakage current at room temperature, and cannot accurately measure the wet leakage current at the edge of the product, nor do they have long-term reliability monitoring Function
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0027] Such as figure 2 and image 3 As shown, take five samples 1 to be tested with different edge distances and place them vertically in the solution tank 2. The samples are separated from each other by an insulating isolation tube 14. In the solution tank 2, a solution 18 with a pH of 7 is injected, and the solution 18 The resistivity is 3000Ω·cm, and the bottom edge of the sample 1 can be immersed in the solution 18; the positive pole 15 of the insulation withstand voltage tester 3 connects the positive pole connector 26 to each sample lead-out end 16 respectively through the connection line 8, and the positive pole joints 26 cannot touch each other. The negative electrode 17 of the insulation withstand voltage tester 3 is immersed in the solution 18 through the connection line 8 , and the negative electrode joint 27 cannot touch the sample 1 .
[0028] The numbers A, B, C, D, and E of sample 1 to be tested are:
[0029] A. 2mm edge distance, high resistivity EVA, doubl...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| Resistivity | aaaaa | aaaaa |
Login to View More
Abstract
The invention relates to the technical field of detection of a photovoltaic component and especially relates to a detecting device for edge wet leakage property and long-term reliability of the photovoltaic component. The detecting device comprises a sample, a solution tank, an insulating voltage-resisting tester and a computer, wherein the sample is placed in the solution tank; and the insulating voltage-resisting tester is used for collecting a wet leakage current of the sample through the solution tank, and then transmitting the wet leakage current to the computer, displaying in real time and storing the data. The detecting device provided by the invention is used for detecting the wet leakage property and the long-term reliability of a component sample with different edge distances, different EVA (Ethylene-Vinyl Acetate) and silica gel materials, different edge-banding modes and different packaging structures under the condition of ensuring safety detection; the detecting method has the advantages of convenience in operation, high safety, strong practicability and low cost; and the detecting device and the detecting method have important significance in analyzing and researching the structural design, novel material selection and outdoor use risk of the component sample.
Description
technical field [0001] The invention relates to the technical field of photovoltaic component detection, in particular to a detection device and method for edge wet leakage and long-term reliability of photovoltaic components. Background technique [0002] The structure of photovoltaic modules mainly includes front plate glass, EVA, battery, back plate, solder tape, silica gel and aluminum frame. Single solar cells are thin and fragile, and are easy to age. They must be packaged into components with materials with good weather resistance After that, it can be used normally outdoors; the front glass is usually 3.2mm high-transparency tempered glass; the back plate is usually made of polymer composite material or tempered glass with excellent weather resistance. At present, the production of photovoltaic modules is to fix the aluminum frame around the laminated parts through silica gel, and the production of the laminated parts is first to laminate the solar cells welded by we...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G01R31/02G01R31/12
Inventor 全鹏徐建美张臻沈艳萍
Owner TRINASOLAR CO LTD