CA3178024A1 - Repair method for sealing the back of photovoltaic modules - Google Patents
Repair method for sealing the back of photovoltaic modules Download PDFInfo
- Publication number
- CA3178024A1 CA3178024A1 CA3178024A CA3178024A CA3178024A1 CA 3178024 A1 CA3178024 A1 CA 3178024A1 CA 3178024 A CA3178024 A CA 3178024A CA 3178024 A CA3178024 A CA 3178024A CA 3178024 A1 CA3178024 A1 CA 3178024A1
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- Prior art keywords
- photovoltaic modules
- pulsed infrared
- pulse
- infrared
- pulsed
- Prior art date
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- Pending
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- 238000000034 method Methods 0.000 title claims abstract description 51
- 238000007789 sealing Methods 0.000 title claims abstract description 15
- 230000005855 radiation Effects 0.000 claims abstract description 11
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- 238000000576 coating method Methods 0.000 claims abstract description 10
- 238000004140 cleaning Methods 0.000 claims abstract description 5
- 238000012360 testing method Methods 0.000 claims abstract description 5
- 238000011990 functional testing Methods 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 150000001875 compounds Chemical class 0.000 claims description 6
- 230000000379 polymerizing effect Effects 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims description 2
- 238000010924 continuous production Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- 239000000565 sealant Substances 0.000 claims 1
- 239000011888 foil Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention relates to a method for efficiently sealing the back of photovoltaic modules as part of a repair. The photovoltaic modules pass through several process stages one after the other, beginning with a selection of repairable photovoltaic modules, their anonymization and cleaning, following by further process stages, namelydrying, coating and treatment of the coating with pulsed infrared radiation, and ending with a check of the process and a functional test using a flash test. The process conditions and apparatus configurations in the process stages are given in claim 1.
Description
I
Repair method for sealing the back of photovoltaic modules Field of use The invention relates to a method for efficiently sealing the back of photovoltaic modules as part of a repair.
State of the art Photovoltaic modules were and are coated on the back with various types of foil in 1 to 3 layers. Many millions of photovoltaic modules have been manufactured and installed in this way worldwide. The back foils used are made of polymer plastic which becomes porous after 5 to 8 years and tends to tear or can tear. This results in the failure of the entire module. Worn out photovoltaic panels must be discarded and replaced, with the possibility of repairing them for another use. So far, this has been done by glueing another foil on the back of the modules. However, this repair method works, if at all, only for a short time, because the back of the modules has become porous like flour over the years and is penetrated with water. The glued foil falls off again after a short time. The repair of photovoltaic modules according to this state of the art is therefore ineffective and impractical, especially with regard to the large number of photovoltaic modules to be repaired.
It would therefore be desirable to have a repair technology for photovoltaic modules available, standig out due a high degree of automation. The repaired photovoltaic modules should function for at least 10 years.
Problem It is the object of the invention to provide a method for repairing photovoltaic modules. Since the type of damage predominantly affects the back of the photovoltaic modules, the method shall provide an efficient sealing of the back of a photovoltaic module as part of a repair technology.
Date Recue/Date Received 2022-09-30
Repair method for sealing the back of photovoltaic modules Field of use The invention relates to a method for efficiently sealing the back of photovoltaic modules as part of a repair.
State of the art Photovoltaic modules were and are coated on the back with various types of foil in 1 to 3 layers. Many millions of photovoltaic modules have been manufactured and installed in this way worldwide. The back foils used are made of polymer plastic which becomes porous after 5 to 8 years and tends to tear or can tear. This results in the failure of the entire module. Worn out photovoltaic panels must be discarded and replaced, with the possibility of repairing them for another use. So far, this has been done by glueing another foil on the back of the modules. However, this repair method works, if at all, only for a short time, because the back of the modules has become porous like flour over the years and is penetrated with water. The glued foil falls off again after a short time. The repair of photovoltaic modules according to this state of the art is therefore ineffective and impractical, especially with regard to the large number of photovoltaic modules to be repaired.
It would therefore be desirable to have a repair technology for photovoltaic modules available, standig out due a high degree of automation. The repaired photovoltaic modules should function for at least 10 years.
Problem It is the object of the invention to provide a method for repairing photovoltaic modules. Since the type of damage predominantly affects the back of the photovoltaic modules, the method shall provide an efficient sealing of the back of a photovoltaic module as part of a repair technology.
Date Recue/Date Received 2022-09-30
2 Solution of the problem The solution of the problem is specified in claim 1. Claim 1presents a holistic technology for the repair of photovoltaic modules as part of mass production and at the level of a very high efficiency of the overall process. It enables in particular a drastic reduction in the crosslinking time of the high-quality sealing compound applied to the back of the modules from hitherto about 60 minutes, related to the production of the modules, to about 3 minutes when repairing the same. This approximately 20-fold acceleration of the crosslinking time is associated with a noticeable reduction in energy consumption, with an above-average quality of the applied and polymerized plastic sealing.
In detail, the inventive method for back sealing of photovoltaic modules is characterized by the below indicated seven process stages, which the photovoltaic modules go through individually and continuously in 3 minutes.
Process stage 1 Anonvmization and selection All photovoltaic modules are marked and checked for suitability for repair.
Based on previous experience, around 70 to 95% of the photovoltaic modules are suited for a repair.
Process stage 2: Cleaning All photovoltaic modules suitable for repair, according to process stage 1, are cleaned with a biodegradable cleaning agent.
A newly developed round brush with a splash guard is used for this purpose, which reaches all areas, especially the corners, of the back of the photovoltaic modules.
The round brush is also used to clean the front of the photovoltaic modules. Thereafter, both the top oriented back as well as the downward-facing glass front of the photovoltaic modules are washed with osmotic-treated water. In this position, the photovoltaic modules are handed over to process stage 3.
Date Recue/Date Received 2022-09-30
In detail, the inventive method for back sealing of photovoltaic modules is characterized by the below indicated seven process stages, which the photovoltaic modules go through individually and continuously in 3 minutes.
Process stage 1 Anonvmization and selection All photovoltaic modules are marked and checked for suitability for repair.
Based on previous experience, around 70 to 95% of the photovoltaic modules are suited for a repair.
Process stage 2: Cleaning All photovoltaic modules suitable for repair, according to process stage 1, are cleaned with a biodegradable cleaning agent.
A newly developed round brush with a splash guard is used for this purpose, which reaches all areas, especially the corners, of the back of the photovoltaic modules.
The round brush is also used to clean the front of the photovoltaic modules. Thereafter, both the top oriented back as well as the downward-facing glass front of the photovoltaic modules are washed with osmotic-treated water. In this position, the photovoltaic modules are handed over to process stage 3.
Date Recue/Date Received 2022-09-30
3 Process stage 3: Drying off The photovoltaic modules are first transferred to a roller conveyor, on which the drying of the photovoltaic modules is provided in three steps in a continuous run, namely - Wiping off the remaining water by rubber lips, - Blowing off the still remaining water by an air curtain, - Removing of the further still remaining water on the back side of the photovoltaic modules facing upwards by drying same using pulsed infrared radiation at < 80 C
within <2 minutes.
The emission of the pulsating infrared radiation is precisely aligned with the absorption of the water, resulting in a highly efficient energy transfer.
The process parameters are as follows:
Throughput speed 1 - 2.5 m/min Height of the pulsed infrared module above the photovoltaic modules 1 - 2.5 m/min Pulsed infrared module length 280 - 400 mm Drying time 1.5 - 4 min Electrical power density 6.3 - 16 kW/m2 Pulsed infrared wavelength 2.5 - 4 pm Pulsed infrared emitter power 1.6 - 3.2 cm2 Pulsed infrared - emitter pulse power 250 - 320 W/cm2 Pulsed infrared - pulse duration 10 - 16 ps Pulsed infrared - pulse frequency 40 - 100 kHz Drying is supported by a moderate laminar air flow of 0.1 - 0.5 m/min with 0.1 - 0.25 m3/1-L
Process stage 4: Coating The clean and dry back surfaces of the photovoltaic modules are coated evenly with a liquid plastic sealing compound (adhesive or polymers) using spray nozzles. The sprayability of Date Recue/Date Received 2022-09-30
within <2 minutes.
The emission of the pulsating infrared radiation is precisely aligned with the absorption of the water, resulting in a highly efficient energy transfer.
The process parameters are as follows:
Throughput speed 1 - 2.5 m/min Height of the pulsed infrared module above the photovoltaic modules 1 - 2.5 m/min Pulsed infrared module length 280 - 400 mm Drying time 1.5 - 4 min Electrical power density 6.3 - 16 kW/m2 Pulsed infrared wavelength 2.5 - 4 pm Pulsed infrared emitter power 1.6 - 3.2 cm2 Pulsed infrared - emitter pulse power 250 - 320 W/cm2 Pulsed infrared - pulse duration 10 - 16 ps Pulsed infrared - pulse frequency 40 - 100 kHz Drying is supported by a moderate laminar air flow of 0.1 - 0.5 m/min with 0.1 - 0.25 m3/1-L
Process stage 4: Coating The clean and dry back surfaces of the photovoltaic modules are coated evenly with a liquid plastic sealing compound (adhesive or polymers) using spray nozzles. The sprayability of Date Recue/Date Received 2022-09-30
4 the sealing compound is provided and guaranteed by adding 20 to 40% of a water-soluble, environmentally friendly thinner. The layer thickness of the applied coating in the moist phase is 40 to 100 pm.
Process stage 5: Treatment of the coating with pulsed infrared radiation The transfer of the photovoltaic modules to this process stage also takes place using a roller conveyor, whereby the pulsed infrared treatment is carried out in two stages, namely drying and polymerizing.
Both process stages run continuously at < 80 C within <2 minutes.
- Drying:
The surfaces of the backs of the photovoltaic modules coated in process stage 4 are also dried with pulsed infrared radiation.
As a result, the water introduced from the thinner will be evaporated completely, and in an extremely short time.
The following process conditions are to observe:
Throughput speed 1 - 2.5 m/min Height of the pulsed infrared module above the photovoltaic modules 1 - 2.5 m/min Pulse infrared module length 580 - 800 mm Drying time 1.5 -4 min Electrical power density 6.3 - 16 kW/m2 Pulsed infrared wavelength 3.0 - 4.5 pm Pulsed infrared emitter power 1.6 - 3.2 cm2 Pulsed infrared - emitter pulse power 250 - 320 W/cm2 Pulsed infrared - pulse duration 12 - 25 ps Pulsed infrared - pulse frequency 40 - 100 kHz Here, too, drying is supported by a moderate laminar air flow of 0.1 - 0.5 m/min with 0.1 -0.25 m3/h.
Date Recue/Date Received 2022-09-30
Process stage 5: Treatment of the coating with pulsed infrared radiation The transfer of the photovoltaic modules to this process stage also takes place using a roller conveyor, whereby the pulsed infrared treatment is carried out in two stages, namely drying and polymerizing.
Both process stages run continuously at < 80 C within <2 minutes.
- Drying:
The surfaces of the backs of the photovoltaic modules coated in process stage 4 are also dried with pulsed infrared radiation.
As a result, the water introduced from the thinner will be evaporated completely, and in an extremely short time.
The following process conditions are to observe:
Throughput speed 1 - 2.5 m/min Height of the pulsed infrared module above the photovoltaic modules 1 - 2.5 m/min Pulse infrared module length 580 - 800 mm Drying time 1.5 -4 min Electrical power density 6.3 - 16 kW/m2 Pulsed infrared wavelength 3.0 - 4.5 pm Pulsed infrared emitter power 1.6 - 3.2 cm2 Pulsed infrared - emitter pulse power 250 - 320 W/cm2 Pulsed infrared - pulse duration 12 - 25 ps Pulsed infrared - pulse frequency 40 - 100 kHz Here, too, drying is supported by a moderate laminar air flow of 0.1 - 0.5 m/min with 0.1 -0.25 m3/h.
Date Recue/Date Received 2022-09-30
5 - Polymerizing:
The polymer sealing compound, now without water, is in turn polymerized extremely quickly with pulsed infrared radiation in an above-average quality regarding adhesion, strength, toughness and durability into a sealed hermetically closed layer, actually under the following conditions:
Throughput speed 1 - 2.5 m/min Pulse infrared module height above the photovoltaic modules 1 - 2.5 m/min Pulse infrared module length 580 - 800 mm Drying time 1.5 -4 min Electrical power density 6.3 - 16 kW/m2 Pulsed infrared wavelength 4.0 - 8.5 pm Pulsed infrared emitter power 1.6 - 3.2 cm2 Pulsed infrared - emitter pulse power 250 - 320 W/cm2 Pulsed infrared - pulse duration 3.2 - 15 ps Pulsed infrared - pulse frequency 40- 100 kHz As in the previous steps, the polymerizing is supported by a moderate laminar air flow of 0.1 - 0.5 m/min with 0.1 - 0.25 m3/h.
Process stage 6: Check of the process The entire process is checked using a camera system (Matrix Vision).
Process stage 7: Functional test (flash test) The entire process is accompanied and documented by software. The photovoltaic modules are provided with a new identification.
Regarding the system, the process can advantageously be carried out in a standard container. Approximately 20 photovoltaic modules can be repaired in a continuous process per hour. The core of the innovation lies in the process stages 3, 4 and 5.
These stages can also be used during the manufacturing of new photovoltaic modules.
Date Recue/Date Received 2022-09-30
The polymer sealing compound, now without water, is in turn polymerized extremely quickly with pulsed infrared radiation in an above-average quality regarding adhesion, strength, toughness and durability into a sealed hermetically closed layer, actually under the following conditions:
Throughput speed 1 - 2.5 m/min Pulse infrared module height above the photovoltaic modules 1 - 2.5 m/min Pulse infrared module length 580 - 800 mm Drying time 1.5 -4 min Electrical power density 6.3 - 16 kW/m2 Pulsed infrared wavelength 4.0 - 8.5 pm Pulsed infrared emitter power 1.6 - 3.2 cm2 Pulsed infrared - emitter pulse power 250 - 320 W/cm2 Pulsed infrared - pulse duration 3.2 - 15 ps Pulsed infrared - pulse frequency 40- 100 kHz As in the previous steps, the polymerizing is supported by a moderate laminar air flow of 0.1 - 0.5 m/min with 0.1 - 0.25 m3/h.
Process stage 6: Check of the process The entire process is checked using a camera system (Matrix Vision).
Process stage 7: Functional test (flash test) The entire process is accompanied and documented by software. The photovoltaic modules are provided with a new identification.
Regarding the system, the process can advantageously be carried out in a standard container. Approximately 20 photovoltaic modules can be repaired in a continuous process per hour. The core of the innovation lies in the process stages 3, 4 and 5.
These stages can also be used during the manufacturing of new photovoltaic modules.
Date Recue/Date Received 2022-09-30
6 Embodiment The method according to the invention for back sealing of photovoltaic modules is in the following explained in more detail with reference to a drawing (Fig. 1).
The overall method consists of several process stages, which are run through by the photovoltaic modules to be repaired one after the other.
In detail, these are the process stages:
- anonymization and selection 1, - cleaning 2, - drying 3, - coating 4, - treatment of the coating with pulsed infrared radiation 5, - checking of the process 6, - functional test 7.
These process stages are described in the above description to which it is referred herewith expressly to avoid repetition.
Systems according to the features of the invention are advantageously designed in such a way that the accommodation in a standard container format 40 foot high cube 12,032 x 2,352 x 2,698 is possible.
Date Recue/Date Received 2022-09-30
The overall method consists of several process stages, which are run through by the photovoltaic modules to be repaired one after the other.
In detail, these are the process stages:
- anonymization and selection 1, - cleaning 2, - drying 3, - coating 4, - treatment of the coating with pulsed infrared radiation 5, - checking of the process 6, - functional test 7.
These process stages are described in the above description to which it is referred herewith expressly to avoid repetition.
Systems according to the features of the invention are advantageously designed in such a way that the accommodation in a standard container format 40 foot high cube 12,032 x 2,352 x 2,698 is possible.
Date Recue/Date Received 2022-09-30
Claims
1. Method for back sealing of photovoltaic modules running through several process stages in succession in a continuous process, starting with a selection of repairable photovoltaic modules, their anonymization and cleaning and ending with a check of the process and a functional test using a flash test, wherein the process stages anonymization and selection and cleaning are followed by process stage drying with the following steps and features:
- Drying of the photovoltaic modules located on a roller conveyor by - Wiping off the remaining water, - Blowing off the still remaining water using an air curtain, - Removing of the further still remaining water on the upward facing backs of the photovoltaic modules by pulsed infrared radiation at < 80 C within < 2 minutes, wherein the emission of the pulsating infrared radiation is precisely aligned with the absorption of the water, - Compliance with the following process parameters:
Throughput speed 1 - 2.5 m/min Height of the pulsed infrared module above the photovoltaic modules 1 - 2.5 m/min Pulse infrared module length 280 - 400 mm Drying time 1.5 - 4 min Electrical power density 6.3 - 16 kW/m2 Pulsed infrared wavelength 2.5 - 4 pm Pulsed infrared emitter power 1.6 - 3.2 cm2 Pulse infrared emitter pulse power 250 - 320 W/cm2 Pulse infrared pulse duration 10 - 16 ps Pulsed infrared pulse frequency 40 - 100 kHz, wherein the process stage coating is downstream, in which the clean and dry back surfaces of the photovoltaic modules are coated evenly with a liquid plastic sealing compound (adhesive or polymers) using spray nozzles wherein a layer thickness of the applied coating in the wet phase is from 40 to 100 pm, wherein the sprayability of the sealing compound is provided by an addition of 20 to 40% of a water-soluble, nvironmentally friendly thinner, wherein in a next process stage a treatment of the coating with pulsed infrared radiation is carried out, wherein the back surfaces of the photovoltaic modules are irradiated with pulsed infrared in two stages, namely drying and polymerizing, in continuous operation at < 80 C within < 2 minutes, wherein initially introduced water of the thinner is completely evaporated, under the following process conditions Throughput speed 1 - 2.5 m/min Pulse infrared module height above the photovoltaic modules 1 - 2.5 m/min Pulse infrared module length 580 - 800 mm Drying time 1.5 - 4 min Electrical power density 6.3 - 16 kW/m2 Pulsed infrared wavelength 3.0 - 4.5 pm Pulsed infrared emitter power 1.6 - 3.2 cm2 Pulsed infrared - emitter pulse power 250 - 320 W/cm2 Pulsed infrared - pulse duration 12 - 25 ps Pulsed infrared - pulse frequency 40 - 100 kHz, wherein thereafter the waterless polymeric sealant is polymerized by pulsed infrared radiation to form a closed layer under the following conditions:
Throughput speed 1 - 2.5 m/min Pulse infrared module height above the photovoltaic modules 1 - 2.5 m/min Pulse infrared module length 580 - 800 mm Drying time 1.5 - 4 min Electrical power density 6.3 - 16 kW/m2 Pulsed infrared wavelength 4.0 - 8.5 pm Pulsed infrared emitter power 1.6 - 3.2 cm2 Pulsed infrared - emitter pulse power 250 - 320 W/cm2 Pulsed infrared - pulse duration 3.2 - 15 ps Pulsed infrared - pulse frequency 40 - 100 kHz wherein the drying and polymerizing in the aforementioned steps is supported by a moderate laminar air flow of 0.1 - 0.5 m/min with 0.1 - 0.25 m3/h, and wherein process stages of checking the process and functional testing using a flash test follow.
- Drying of the photovoltaic modules located on a roller conveyor by - Wiping off the remaining water, - Blowing off the still remaining water using an air curtain, - Removing of the further still remaining water on the upward facing backs of the photovoltaic modules by pulsed infrared radiation at < 80 C within < 2 minutes, wherein the emission of the pulsating infrared radiation is precisely aligned with the absorption of the water, - Compliance with the following process parameters:
Throughput speed 1 - 2.5 m/min Height of the pulsed infrared module above the photovoltaic modules 1 - 2.5 m/min Pulse infrared module length 280 - 400 mm Drying time 1.5 - 4 min Electrical power density 6.3 - 16 kW/m2 Pulsed infrared wavelength 2.5 - 4 pm Pulsed infrared emitter power 1.6 - 3.2 cm2 Pulse infrared emitter pulse power 250 - 320 W/cm2 Pulse infrared pulse duration 10 - 16 ps Pulsed infrared pulse frequency 40 - 100 kHz, wherein the process stage coating is downstream, in which the clean and dry back surfaces of the photovoltaic modules are coated evenly with a liquid plastic sealing compound (adhesive or polymers) using spray nozzles wherein a layer thickness of the applied coating in the wet phase is from 40 to 100 pm, wherein the sprayability of the sealing compound is provided by an addition of 20 to 40% of a water-soluble, nvironmentally friendly thinner, wherein in a next process stage a treatment of the coating with pulsed infrared radiation is carried out, wherein the back surfaces of the photovoltaic modules are irradiated with pulsed infrared in two stages, namely drying and polymerizing, in continuous operation at < 80 C within < 2 minutes, wherein initially introduced water of the thinner is completely evaporated, under the following process conditions Throughput speed 1 - 2.5 m/min Pulse infrared module height above the photovoltaic modules 1 - 2.5 m/min Pulse infrared module length 580 - 800 mm Drying time 1.5 - 4 min Electrical power density 6.3 - 16 kW/m2 Pulsed infrared wavelength 3.0 - 4.5 pm Pulsed infrared emitter power 1.6 - 3.2 cm2 Pulsed infrared - emitter pulse power 250 - 320 W/cm2 Pulsed infrared - pulse duration 12 - 25 ps Pulsed infrared - pulse frequency 40 - 100 kHz, wherein thereafter the waterless polymeric sealant is polymerized by pulsed infrared radiation to form a closed layer under the following conditions:
Throughput speed 1 - 2.5 m/min Pulse infrared module height above the photovoltaic modules 1 - 2.5 m/min Pulse infrared module length 580 - 800 mm Drying time 1.5 - 4 min Electrical power density 6.3 - 16 kW/m2 Pulsed infrared wavelength 4.0 - 8.5 pm Pulsed infrared emitter power 1.6 - 3.2 cm2 Pulsed infrared - emitter pulse power 250 - 320 W/cm2 Pulsed infrared - pulse duration 3.2 - 15 ps Pulsed infrared - pulse frequency 40 - 100 kHz wherein the drying and polymerizing in the aforementioned steps is supported by a moderate laminar air flow of 0.1 - 0.5 m/min with 0.1 - 0.25 m3/h, and wherein process stages of checking the process and functional testing using a flash test follow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA3178024A CA3178024A1 (en) | 2022-09-30 | 2022-09-30 | Repair method for sealing the back of photovoltaic modules |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA3178024A CA3178024A1 (en) | 2022-09-30 | 2022-09-30 | Repair method for sealing the back of photovoltaic modules |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA3178024A1 true CA3178024A1 (en) | 2024-03-30 |
Family
ID=90458746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3178024A Pending CA3178024A1 (en) | 2022-09-30 | 2022-09-30 | Repair method for sealing the back of photovoltaic modules |
Country Status (1)
| Country | Link |
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| CA (1) | CA3178024A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20240113249A1 (en) * | 2022-09-30 | 2024-04-04 | Horst Fischer | Repair method for sealing the back of photovoltaic modules |
-
2022
- 2022-09-30 CA CA3178024A patent/CA3178024A1/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20240113249A1 (en) * | 2022-09-30 | 2024-04-04 | Horst Fischer | Repair method for sealing the back of photovoltaic modules |
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