Method and system for rapidly testing high-temperature and high-humidity resistance of BIPV (building integrated photovoltaics) assembly

Abstract

The invention belongs to the field of photovoltaic modules, and discloses a method and system for rapidly testing high-temperature and high-humidity resistance of a BIPV (building integrated photovoltaics) component, and the method comprises the steps: selecting the BIPV component with qualified appearance, electrical performance and EL image inspection as a test sample; boiling the sample with water; and based on the appearance, the electrical property and the EL image of the boiled sample, judging whether the high-temperature and high-humidity resistance of the BIPV assembly in the corresponding batch is qualified or not. According to the invention, the boiling test is added before the mass production of the BIPV assembly, so that the high-temperature and high-humidity resistance of the product can be rapidly evaluated, whether the product meets the performance requirement or not is judged, the product introduction period is effectively shortened, and the production cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic modules, and in particular to a method and system for quickly testing the high temperature and high humidity resistance of BIPV modules. Background Art

[0002] BIPV (building integrated photovoltaic) technology is a technology that integrates solar power generation (photovoltaic) products into buildings. Different from the form of photovoltaic systems attached to buildings, building integrated photovoltaic can be divided into two categories: one is the combination of photovoltaic arrays and buildings, and the other is the integration of photovoltaic arrays and buildings, such as photovoltaic tile roofs, photovoltaic curtain walls and photovoltaic skylights.

[0003] BIPV modules are subject to various environmental factors during long-term use, and their reliability is crucial, among which high temperature and high humidity resistance is the primary prerequisite. When the module area changes by no more than 20%, it is not necessary to conduct relevant tests according to IEC TS62915 "Photovoltaic Module Type Approval, Design and Safety Identification - Retest Guidelines", and the current high temperature and high humidity resistance test methods for photovoltaic modules are usually time-consuming and costly, and cannot meet the needs of rapid evaluation.

[0004] Therefore, it is necessary to provide a rapid testing method and system for the high temperature and high humidity resistance of BIPV modules, which can quickly evaluate the high temperature and high humidity resistance of BIPV photovoltaic modules before mass production when the size change of BIPV photovoltaic modules is ≤20%, so as to ensure their reliability, and further ensure that the BIPV modules will not have bubbles and delamination during their effective period of use, which will affect the appearance and power generation performance of the modules. Summary of the invention

[0005] The purpose of this application is to be able to quickly evaluate the high temperature and high humidity resistance of the BIPV photovoltaic module before mass production when the size change is ≤20%, so as to ensure its reliability, and further ensure that the BIPV module will not have bubbles and delamination during its effective period of use, affecting the appearance and power generation performance of the module.

[0006] To achieve the above objectives, the present application provides a method for quickly testing the high temperature and high humidity resistance of a BIPV component, comprising:

[0007] Select BIPV modules that have passed the appearance, electrical performance and EL image inspection as test samples;

[0008] Boil the samples in water;

[0009] Based on the appearance, electrical properties and EL images of the boiled samples, determine whether the high temperature and high humidity resistance of the corresponding batch of BIPV components is qualified.

[0010] Furthermore, the appearance includes damage, cracks, stains, scratches, pits, bubbles and delamination of the sample.

[0011] Furthermore, when inspecting the appearance of the sample, the light intensity is controlled to be above 1000Lx.

[0012] Further, the electrical performance includes the power of the BIPV module.

[0013] Further, the sample is boiled in water, including:

[0014] Immerse the sample in water at a preset temperature for a preset time, and take out the sample at regular intervals to observe its appearance.

[0015] Further, the preset temperature is 90-100°C.

[0016] Furthermore, the preset time is 48 hours, and samples are taken out every 12 hours to observe the appearance.

[0017] Furthermore, based on the appearance, electrical properties and EL images of the boiled samples, determine whether the high temperature and high humidity resistance of the corresponding batch of BIPV modules is qualified, including:

[0018] Determine whether the sample is qualified based on the bubbles and delamination of the sample after boiling in water under light above 1000Lx;

[0019] Whether the sample is qualified is determined based on whether the power attenuation of the sample after boiling is greater than the preset standard;

[0020] Whether the sample is qualified is determined based on whether the blackened area of ​​the EL image of the sample after boiling exceeds a preset area percentage.

[0021] Further, the preset standard is 5%.

[0022] The present application also provides a rapid testing system for high temperature and high humidity resistance of BIPV components, including:

[0023] The sample selection unit is used to extract BIPV modules and select the BIPV modules that have passed the appearance, electrical performance and EL image inspection as test samples;

[0024] A water boiling unit, used for boiling the sample;

[0025] The judgment unit is used to judge whether the high temperature and high humidity resistance performance of the corresponding batch of BIPV components is qualified based on the appearance, electrical properties and EL image of the samples after boiling in water.

[0026] Technical effects and advantages of this application:

[0027] 1. This application can quickly evaluate the product's resistance to high temperature and humidity by adding a water boiling test before mass production of BIPV components, thereby determining whether the product meets the performance requirements, effectively shortening the product introduction cycle and reducing production costs.

[0028] 2. This application places the BIPV components in a water bath environment at 95±5℃ for 48 hours to create a strict high temperature and high humidity environment, thereby testing the reliability of the components under extreme conditions and ensuring that the components can resist environmental erosion during the subsequent installation and operation process.

[0029] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a flow chart of a method for rapidly testing the high temperature and high humidity resistance of a BIPV component in the present application. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] BIPV modules are subject to various environmental factors during long-term use, and their reliability is crucial, among which high temperature and high humidity resistance is the primary prerequisite. When the module area changes by no more than 20%, it is not necessary to conduct relevant tests according to IEC TS62915 "Photovoltaic Module Type Approval, Design and Safety Identification - Retest Guidelines", and the current high temperature and high humidity resistance test methods for photovoltaic modules are usually time-consuming and costly, and cannot meet the needs of rapid evaluation.

[0033] In order to solve the above problems, the present application provides a method for quickly testing the high temperature and high humidity resistance of a BIPV component, comprising:

[0034] 1. Extract BIPV modules and select those that have passed the appearance, electrical performance and EL (Electro Luminescence) image inspection as test samples;

[0035] Before mass production of BIPV modules, multiple BIPV modules are randomly selected for appearance, electrical performance and EL image inspection. BIPV modules that pass the appearance, electrical performance and EL image inspection are selected as test samples for water boiling test.

[0036] Specifically, the BIPV components are observed under light of 1000Lx or above to see if there are any defects such as damage, cracks, stains, scratches, holes, and obvious bubbles or delamination. If all of these meet the requirements, the appearance is considered qualified. By increasing the light intensity of the observation light source, the accuracy and efficiency of the appearance inspection can be effectively improved.

[0037] Check whether the initial power of BIPV components meets the production standards.

[0038] Check whether the blackened area of ​​the EL image of the BIPV module exceeds a preset standard, for example, whether it exceeds 3% of the total area of ​​the EL image.

[0039] If the above test results are all qualified, the sample will be selected as the test sample for the next step of boiling test.

[0040] 2. Boil the sample in water;

[0041] Immerse the sample in water at a preset temperature for a preset time, and take out the sample at regular intervals to observe its appearance.

[0042] It should be noted that the preset temperature, preset time and time interval for observing the appearance can be adjusted according to the requirements for the sample's resistance to high temperature and high humidity. For example, the preset temperature can be the operating temperature of any BIPV component, and the preset time can be extended as the requirements for resistance to high temperature and high humidity are improved. This application prefers a preset time of 48h and a preset temperature of 95±5°C. Samples are taken out every 12h to observe the appearance. This ensures that the high temperature and high humidity resistance of qualified samples meets product requirements while reducing the detection time as much as possible to improve efficiency.

[0043] 3. Based on the appearance, electrical properties and EL images of the boiled samples, determine whether the high temperature and high humidity resistance of the corresponding batch of BIPV components is qualified.

[0044] Based on the appearance of the boiled samples observed under light above 1000Lx, if the samples show obvious bubbles or delamination, they are judged as unqualified;

[0045] Whether the sample is qualified is determined based on whether the power attenuation of the sample after boiling is greater than the preset standard. The preset standard is determined according to the actual product requirements. For example, it can be set to be unqualified when the power attenuation of the component is greater than 5%;

[0046] Whether the sample is qualified is determined based on whether the blackened area of ​​the EL image of the sample after boiling exceeds a preset area (set according to product requirements, for example, it can be set to 3% of the total area of ​​the EL image).

[0047] The present application also provides a rapid testing system for high temperature and high humidity resistance of BIPV components, including:

[0048] The sample selection unit is used to extract BIPV modules and select the BIPV modules that have passed the appearance, electrical performance and EL image inspection as test samples;

[0049] A water boiling unit, used for boiling the sample;

[0050] The judgment unit is used to judge whether the high temperature and high humidity resistance performance of the corresponding batch of BIPV components is qualified based on the appearance, electrical properties and EL image of the samples after boiling in water.

[0051] In summary, this application can quickly evaluate the product's resistance to high temperature and high humidity by adding a water boiling test before mass production of BIPV components, thereby determining whether the product meets performance requirements, effectively shortening the product introduction cycle, and reducing production costs. By placing the BIPV components in a 95±5°C water bath environment for 48 hours, a stricter high temperature and high humidity environment is created, thereby testing the reliability of the components under extreme conditions and ensuring that the components can resist environmental erosion during the subsequent installation and operation process.

[0052] Finally, it should be noted that the above is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A rapid test method for high temperature and high humidity resistance of BIPV components, characterized in that: include: Select BIPV modules that have passed the appearance, electrical performance and EL image inspection as test samples; boiling the sample in water; Based on the appearance, electrical properties and EL images of the samples after boiling, determine whether the high temperature and high humidity resistance of the corresponding batch of BIPV components is qualified.

2. A rapid test method for high temperature and high humidity resistance of a BIPV component according to claim 1, characterized in that: The appearance includes damage, cracks, stains, scratches, pits, bubbles and delamination of the sample.

3. A rapid test method for high temperature and high humidity resistance of a BIPV component according to claim 1, characterized in that: When inspecting the appearance of the sample, the light intensity is controlled to be above 1000Lx.

4. The method for rapid testing the high temperature and high humidity resistance of a BIPV component according to claim 1, characterized in that: The electrical performance includes the power of the BIPV module.

5. The method for rapid testing the high temperature and high humidity resistance of a BIPV component according to claim 1, characterized in that: The step of boiling the sample in water comprises: The sample is immersed in water at a preset temperature for a preset time, and the sample is taken out at regular intervals to observe the appearance.

6. A rapid test method for high temperature and high humidity resistance of a BIPV component according to claim 5, characterized in that: The preset temperature is 90-100°C.

7. A rapid test method for high temperature and high humidity resistance of a BIPV component according to claim 5, characterized in that: The preset time is 48 hours, and the samples are taken out every 12 hours to observe the appearance.

8. A rapid test method for high temperature and high humidity resistance of a BIPV component according to claim 1, characterized in that: The method of judging whether the high temperature and high humidity resistance of the corresponding batch of BIPV components is qualified based on the appearance, electrical properties and EL image of the sample after boiling in water includes: Determine whether the sample is qualified based on the bubbles and delamination of the sample after boiling in water under light of 1000Lx or more; Determining whether the sample is qualified based on whether the power attenuation of the sample after boiling is greater than a preset standard; Whether the sample is qualified is determined based on whether the blackened area of ​​the EL image of the sample after boiling exceeds a preset area percentage.

9. A rapid test method for high temperature and high humidity resistance of a BIPV component according to claim 8, characterized in that: The preset standard is 5%.

10. A rapid test system for high temperature and high humidity resistance of BIPV components, characterized in that: include: The sample selection unit is used to extract BIPV modules and select the BIPV modules that have passed the appearance, electrical performance and EL image inspection as test samples; A boiling unit, used for boiling the sample; The determination unit is used to determine whether the high temperature and high humidity resistance of the corresponding batch of BIPV components is qualified based on the appearance, electrical properties and EL image of the sample after boiling in water.

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