Method for evaluating service life of photovoltaic module

A photovoltaic module and life-span technology, applied in the monitoring of photovoltaic systems, photovoltaic modules, photovoltaic power generation and other directions, can solve the problems such as the lack of an evaluation method for the service life of optical components, the inability to effectively evaluate the service life of photovoltaic modules, etc., to improve the experimental accuracy. Effect

Active Publication Date: 2019-11-05
DONGJUN NEW ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the service life of photovoltaic modules used in daily life scenarios is generally within ten years. However, there are no effective evaluation methods, testing procedures and judgment standards for the service life of this part of the photovoltaic components in the market, making this The service life of some photovoltaic modules cannot be effectively evaluated at present

Method used

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  • Method for evaluating service life of photovoltaic module
  • Method for evaluating service life of photovoltaic module
  • Method for evaluating service life of photovoltaic module

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0088] This application provides a method for evaluating the service life of photovoltaic modules, such as figure 1 As shown, the method may include S101-S102:

[0089] S101. Perform at least one set of environmental weather resistance experiments on the photovoltaic modules according to the preset experimental standards;

[0090] S102. When the photovoltaic module passes at least one set of environmental weather resistance tests, determine the service life of the photovoltaic module according to the evaluation life corresponding to the experimental standard.

[0091] Optionally, the experimental standard may include one or more groups, and each group of experimental standards corresponds to a different estimated lifetime.

[0092] In this application, since the service life of photovoltaic modules mainly depends on the influence of the real environment, in order to effectively evaluate the service life of photovoltaic modules, at least one set of environmental weather resist...

Embodiment 2

[0101] This embodiment introduces in detail the experimental steps that can be included in this group of environmental weather resistance experiments on the basis of the first embodiment.

[0102] Optionally, the environmental weather resistance test includes: environmental weather resistance test; the environmental weather resistance test includes one or more of the following: damp heat test, heat cycle test and wet freezing test.

[0103]Optionally, the environmental weather resistance test also includes: a pre-test before the environmental weather resistance test and a post-test after the environmental weather resistance test; the pre-test includes at least one of the following: the first appearance inspection, the first light attenuation stability test and first power test; and,

[0104] Post-testing includes at least one of the following: a second visual inspection, a second light attenuation stability test, and a second power test.

[0105] In this application, in order...

Embodiment 3

[0136] Based on the second embodiment, this embodiment introduces the passing standards of each step in each set of environmental weather resistance experiments.

[0137] Optionally, the passing criteria of the first appearance inspection and the second appearance inspection may include: no appearance defects that do not meet preset specifications.

[0138] In this application, the preset standard may be the standard set in the product appearance inspection specification.

[0139] Optionally, the passing criteria for the first light attenuation stability test and the second light attenuation stability test may include: in the case of at least two preset kilowatt-hour illuminations, the continuous measurement results satisfy the preset inequality, This inequality is used to express the range that the power attenuation ratio needs to satisfy.

[0140] In this application, it can be at least 2 times of 20 kWh of light, because at least 2 times of 20 kWh of light can meet the lig...

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Abstract

The invention discloses a method for evaluating the service life of a photovoltaic module. The method comprises the following steps: carrying out at least one group of environment weather resistance experiments on the photovoltaic module according to a preset experiment standard; and when the photovoltaic module passes at least one group of environment weather resistance experiments, determining the service life of the photovoltaic module according to the evaluation life corresponding to the experiment standard. Through the scheme of the invention, an effective and feasible evaluation method for the service life of the photovoltaic module is provided.

Description

technical field [0001] This application relates to photovoltaic module testing technology, especially a method for evaluating the service life of photovoltaic modules. Background technique [0002] With the rapid development of photovoltaic industry, solar photovoltaic power generation technology has been widely used in people's daily life. For a product based on solar power generation, the photovoltaic module is its core component. It is combined with the energy demand subject to make the energy demand subject an independent green power generation subject, charging the energy subject through sunlight, and solving the problem of All kinds of electricity demand of the main body of energy demand are met, and the efficiency of energy production, recovery and sharing is improved. [0003] At present, the service life of photovoltaic modules used in daily life scenarios is generally within ten years. However, there are no effective evaluation methods, testing procedures and judg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50H02S50/10
CPCH02S50/10Y02E10/50
Inventor 孙俊波敖华明
Owner DONGJUN NEW ENERGY CO LTD
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