CN110459648B - Processing method for eliminating bubbles of BIPV (building integrated photovoltaic) assembly - Google Patents

Processing method for eliminating bubbles of BIPV (building integrated photovoltaic) assembly Download PDF

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Publication number
CN110459648B
CN110459648B CN201910759118.5A CN201910759118A CN110459648B CN 110459648 B CN110459648 B CN 110459648B CN 201910759118 A CN201910759118 A CN 201910759118A CN 110459648 B CN110459648 B CN 110459648B
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bipv
toughened glass
assembly
bubbles
pvb
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CN110459648A (en
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赵维维
张翼飞
尹丽华
高含
郭政阳
邱国英
陈敬欣
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Baoding Jiasheng Photovoltaic Technology Co Ltd
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Baoding Jiasheng Photovoltaic Technology Co Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor 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
    • H01L31/04Semiconductor 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
    • H01L31/042PV modules or arrays of single PV cells
    • H01L31/048Encapsulation of modules
    • H01L31/0488Double glass encapsulation, e.g. photovoltaic cells arranged between front and rear glass sheets
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor 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
    • H01L31/18Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00Supporting structures for PV modules
    • H02S20/20Supporting structures directly fixed to an immovable object
    • H02S20/22Supporting structures directly fixed to an immovable object specially adapted for buildings
    • H02S20/26Building materials integrated with PV modules, e.g. façade elements
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/60Planning or developing urban green infrastructure
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/10Photovoltaic [PV]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

Abstract

The invention discloses a processing method for eliminating bubbles of a BIPV assembly, which comprises the following steps: controlling the temperature and the humidity of a production site; detecting whether the occupation of the BIPV assembly on a heating plate of a laminating machine is uniformly heated or not; updating the air bag of the laminating machine which can not be matched with the BIPV assembly; preparing glass, PVB and a battery pack; drying the matched glass, laying and combining the materials, preheating and prepressing after the combination is finished, if bubbles appear in the assembly, pricking the bubbles by using a steel needle or clamping a C-shaped clamp, then coating the materials for preventing the bubbles from generating, finally putting the assembly into a high-pressure kettle for curing, and controlling the cooling time. The invention solves the problem that the service life of the assembly is shortened due to the easy generation of bubbles in the assembly, reduces the product cost, improves the yield, prolongs the service life of the BIPV assembly, and has practicability and aesthetic property.

Description

Processing method for eliminating bubbles of BIPV (building integrated photovoltaic) assembly
Technical Field
The invention relates to the technical field of photoelectricity and building materials, in particular to a processing method for eliminating bubbles of a BIPV assembly.
Background
The building integrated photovoltaic component is called as a BIPV component for short, is an integration of photovoltaic and building, and is one of important application forms of building energy conservation. Currently, BIPV technology in developed countries such as europe and the usa has entered a relatively mature period and is widely used. According to the data of the European photovoltaic industry Association, the photovoltaic building application accounts for 80% of the total photovoltaic application in Europe, and the proportion also reaches 67% in the United states. However, China is still in a starting stage, the development momentum is very rapid, and the building photovoltaic installation amount is estimated to reach 50GW (total weight of distributed photovoltaic installations) which accounts for 70% of the total weight of the distributed photovoltaic installations and 33% of the total weight of the photovoltaic installations by the end of 2020, and the market capacity is still very huge.
The BIPV subassembly is encapsulated the crystalline silicon solar cell by upper and lower two-layer toughened glass to with the laminator pre-compaction, bond glass and crystalline silicon cell through inside hot melt glued membrane PVB, after the pre-compaction shaping, the BIPV subassembly gets into the autoclave and carries out the secondary pressurization, and the shaping of BIPV subassembly after the pressurization finishes.
The problems of air bubbles generated by pre-pressing of a laminating machine and air bubbles generated by pressurizing of an autoclave are main quality problems of the BIPV assembly, and particularly the problems are more serious when the temperature difference is large and the service life of the BIPV assembly is shortened, and the appearance quality is greatly reduced. Because the BIPV assembly can not be repaired, the cost of the product is greatly increased, and the large-scale popularization of the product is not facilitated.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a processing method for eliminating bubbles of a BIPV assembly, so as to solve the problems that the service life of the BIPV assembly is shortened and the product cost is increased due to the fact that the bubbles are easy to appear in the production process of the BIPV assembly, so that the service life of the BIPV assembly is prolonged, the appearance is more attractive, and the production quality of the BIPV assembly is improved.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows.
A processing method for eliminating bubbles of a BIPV assembly comprises the following specific processing steps:
(1) determining the size of the produced BIPV assembly and the occupation of the BIPV assembly on a heating plate of a laminating machine, and respectively detecting the temperature of four occupied sides of the BIPV assembly;
(2) detecting the flatness of the air bag of the laminating machine;
(3) matching the upper layer of toughened glass and the lower layer of toughened glass to ensure that the curvature, thickness and length deviation of the upper layer of toughened glass and the lower layer of toughened glass are within a certain tolerance range;
(4) drying the upper layer of toughened glass and the lower layer of toughened glass;
(5) sequentially stacking and laying the lower layer toughened glass, the lower layer PVB, the battery string group, the upper layer PVB and the upper layer toughened glass to complete laminating of the BIPV assembly;
(6) placing the laminated BIPV assembly into a laminating machine for preheating and prepressing treatment;
(7) placing the BIPV assembly subjected to pre-pressing forming into a dehumidifying room independently arranged in a workshop;
if bubbles appear around the edge of the pre-pressed and molded BIPV assembly, puncturing the bubbles by using a steel needle, or clamping a C-shaped clamp at the edge of the BIPV assembly;
(8) coating materials for accelerating the melting of the lower PVB layer and the upper PVB layer to prevent bubbles from being generated around the BIPV assembly treated in the step (7);
(9) putting the BIPV assembly treated in the step (8) into a high-pressure kettle for curing treatment, and controlling the temperature reduction time to be 30-40 min;
controlling the temperature and humidity of the production site in the steps (1) to (9) to be as follows: the temperature is less than or equal to 22 ℃, and the humidity is less than or equal to 30 percent RH;
in the step (2), if the inherent mark formed by the air bag of the laminating machine cannot be matched with the BIPV assembly, the air bag of the laminating machine needs to be replaced;
in the step (5), the edges of the lower layer of toughened glass and the upper layer of toughened glass are wrapped by the lower layer of PVB and the upper layer of PVB.
In the step (1), four point thermometers are respectively placed on four sides of the BIPV component occupied area of the heating plate of the laminating machine, and the temperature difference measured by any two point thermometers is less than 2 ℃.
The technical scheme is further optimized, when the temperature difference measured by any two point thermometers is more than or equal to 2 ℃, the oil circuit of the laminating machine is checked and maintained.
Further optimizing the technical scheme, in the step (4), the upper layer toughened glass and the lower layer toughened glass are dried in a mode of blowing, drying and removing impurities from the upper layer toughened glass and the lower layer toughened glass.
Further optimizing the technical scheme, in the step (5), when the lower-layer toughened glass and the upper-layer toughened glass are the punching glass, a PVB small block with the diameter exceeding the aperture of 1-3 cm is respectively placed at the bottom of the hole of the lower-layer toughened glass and the top of the hole of the upper-layer toughened glass.
Further optimizing the technical scheme, in the step (7), the temperature and humidity of the dehumidification room are controlled as follows: the temperature is 20-25 ℃, and the humidity is 25% -30% RH.
And (4) further optimizing the technical scheme, wherein in the step (7), the steel needle is a circular steel needle with the diameter of 0.5-1.5 mm.
In the step (7), a plurality of C-shaped clamps are clamped in close proximity in the area with dense bubbles at the edge of the BIPV assembly, and the rotation is carried out for 3/4 circles; clamping a C-shaped clamp in a region 5mm away from bubbles in a sparse region of the bubbles at the edge of the BIPV assembly; at the edge of the bubble free area of the BIPV module, a C-clip was placed every 5C-clip lengths, making 3/5 light turns.
In the step (8), the material includes dibutyl ester.
Due to the adoption of the technical scheme, the technical progress of the invention is as follows.
The processing method of the invention improves each process which can generate bubbles, ensures that no bubbles are generated in the finished product of the BIPV assembly, solves the problems of shortened service life and influence on aesthetic property of the assembly caused by bubbles, improves the yield, reduces the production cost, has simple and practical processing steps, and is convenient to be widely used.
According to the invention, the BIPV component is subjected to temperature detection on the occupied four sides of the heating plate of the laminating machine, so that the stability of the heating plate of the whole laminating machine is ensured, and the possibility of the problems of uneven PVB fusion, poor flow performance, bubble generation and the like caused by the non-uniformity of the temperature of the heating plate of the laminating machine is reduced. The invention adopts the point thermometer to detect the temperature, and has high detection precision and quick response.
The invention ensures the flatness of the whole BIPV assembly in the laminating process by replacing the air bag of the laminating machine, ensures that the mark of the air bag of the laminating machine is completely matched with the size of the BIPV assembly, and reduces the possibility of generating bubbles due to uneven pressure on the BIPV assembly.
According to the invention, the temperature and the humidity of a production field in a workshop are controlled, and the independently arranged dehumidification room is adopted, so that the phenomenon that water is absorbed by the lower PVB layer and the upper PVB layer can be avoided, and the phenomenon that air bubbles are generated because water vapor absorbed by the lower PVB layer and the upper PVB layer enters the interior of the BIPV component can be effectively avoided.
The invention carries out the sheet matching on the upper layer toughened glass and the lower layer toughened glass, ensures that the bending degrees of the upper layer toughened glass and the lower layer toughened glass are consistent, ensures that the upper layer toughened glass and the lower layer toughened glass are aligned, and greatly reduces the possibility of generating bubbles.
According to the invention, the upper layer toughened glass and the lower layer toughened glass are dried before the laminating of the BIPV assembly, so that the possibility of generating bubbles due to the fact that water vapor of the upper layer toughened glass and the lower layer toughened glass enters the interior of the BIPV assembly is avoided.
According to the invention, the edges of the lower layer of toughened glass and the upper layer of toughened glass are wrapped by the lower layer of PVB and the upper layer of PVB, so that the phenomenon of expansion and contraction of heat after the BIPV assembly is discharged from a laminating machine due to large temperature difference in middle and night shifts is effectively avoided, and the possibility of generating bubbles at the edges of the BIPV assembly is further effectively avoided.
According to the invention, after bubbles appear around the edge of the pre-pressed and molded BIPV assembly, the generated bubbles are greatly reduced by adopting a steel needle puncturing mode or a mode of clamping a C-shaped clamp at the edge of the BIPV assembly, no bubbles exist in the BIPV assembly after high-pressure autoclave curing treatment, and the production quality of the BIPV assembly is greatly improved.
According to the invention, before the BIPV component enters the autoclave, the dibutyl ester coated around the BIPV component can accelerate the melting of PVB and control the generation of bubbles.
Drawings
FIG. 1 is a flow chart of the production process of the present invention.
Detailed Description
The invention will be described in further detail below with reference to the figures and specific examples.
A processing method for eliminating bubbles of a BIPV assembly comprises the following steps:
controlling the temperature and the humidity in a production site in the following steps: under the premise that the temperature is less than or equal to 22 ℃ and the humidity is less than or equal to 30% RH, firstly, the size of the produced BIPV assembly is determined, the occupation of the BIPV assembly in a heating plate of a laminating machine is determined, four point thermometers are respectively placed on four sides of the occupation of the BIPV assembly for temperature detection, and the temperature difference of the point thermometers is ensured to be less than 2 ℃. When the temperature difference measured by any two point thermometers is more than or equal to 2 ℃, namely the temperature deviation is large, the oil circuit of the laminating machine is checked in time and maintained. The stability of the whole laminating machine heating plate is ensured, and the possibility of problems of uneven PVB fusion, poor flow property, bubble generation and the like caused by the non-uniformity of the temperature of the laminating machine heating plate is reduced.
The inherent imprints of the BIPV component are already formed after the special laminating machine air bag for the photovoltaic is used for a period of time, and if the integral surface flatness of the laminating machine air bag cannot be matched with the BIPV component to be processed. It is necessary to check whether the laminator bladder has formed an inherent imprint, i.e. the laminator bladder flatness detection process. If the inherent mark formed by the laminator airbag cannot be matched with the BIPV assembly, the laminator airbag needs to be replaced, the flatness of the whole BIPV assembly in the laminating process is ensured, the mark of the laminator airbag is completely matched with the size of the BIPV assembly, and the possibility of generating bubbles due to uneven pressure of the BIPV assembly is reduced.
Then, the upper layer of toughened glass, the lower layer of PVB, the battery string group and the upper layer of PVB are required to be prepared.
The manufacturing method is characterized in that a glass manufacturer is required to match pieces of upper-layer toughened glass and lower-layer toughened glass when producing the upper-layer toughened glass and the lower-layer toughened glass, and the curvature, thickness and length deviation of the upper-layer toughened glass and the lower-layer toughened glass are guaranteed to be within a certain tolerance range (the tolerance ranges of the curvature, the thickness and the length are respectively shown in a table I, a table II and a table III).
Tolerance to bending
Nominal thickness (mm) Bow tolerance (%) Wave formTolerance (%)
3.2、4 0.25 0.2
>4 0.3 0.2
TABLE II, Length tolerance
Figure GDA0002930490560000061
Tolerance of thickness
Nominal thickness Tolerance of thickness
3.2、4、5、6、8、10、12 ±0.2
>12 ±0.3
In the BIPV component laying process production process, if the upper-layer toughened glass and the lower-layer toughened glass are not bent uniformly, the upper and lower toughened glass are not aligned, so that more bubbles are generated. Therefore, the grasping of the raw material, that is, the inspection of the tempered glass and the monitoring of the laying process, are key to solving the problem of the generation of bubbles. The invention carries out the sheet matching on the upper layer toughened glass and the lower layer toughened glass, ensures that the bending degrees of the upper layer toughened glass and the lower layer toughened glass are consistent, ensures that the upper layer toughened glass and the lower layer toughened glass are aligned, and greatly reduces the possibility of generating bubbles.
Before carrying out BIPV subassembly and laying the process, need carry out drying process to upper toughened glass and lower floor's toughened glass, sweep upper toughened glass and lower floor's toughened glass promptly, dry, get rid of debris, guarantee upper toughened glass and lower floor's toughened glass's drying, avoided because upper toughened glass and lower floor's toughened glass's steam gets into the inside possibility that produces the bubble of BIPV subassembly.
And sequentially stacking and laying the lower-layer toughened glass, the lower-layer PVB, the battery string group, the upper-layer PVB and the upper-layer toughened glass to complete the laminating of the BIPV assembly.
In the production process, the difference in temperature of middle and night shift is big, can lead to BIPV subassembly to produce expend with heat and contract with cold phenomenon from the laminator ejection of compact after, make BIPV subassembly's edge gassing, in order to solve this problem, strengthen lower floor's PVB and upper PVB's thickness, require lower floor's PVB and upper PVB can wrap up lower floor's toughened glass and upper toughened glass edge, and then avoided lower floor's PVB and upper PVB effectively because of producing expend with heat and contract with cold the possibility that the phenomenon produces the bubble.
The BIPV subassembly after will closing the piece is put into the laminator and is preheated, pre-compaction is handled, and the BIPV subassembly after the pre-compaction shaping is placed in the workshop that sets up alone between the dehumidification, and the atmospheric control between the dehumidification is at: the temperature is 20-25 ℃, and the humidity is 25% -30% RH. The arrangement of the dehumidification room effectively avoids the possibility of generating air bubbles inside the BIPV assembly due to the fact that the PVB material absorbs water in a workshop due to the water absorption specificity of the PVB material.
If bubbles appear around the edge of the pre-pressed and formed BIPV assembly, the product needs to be processed, the bubbles are punctured by a circular steel needle with the diameter of 0.5-1.5 mm, or a C-shaped clamp is clamped at the edge of the BIPV assembly, a plurality of C-shaped clamps are clamped in the area where the bubbles are dense at the edge of the BIPV assembly in the close proximity mode, 3/4 circles are slightly turned, the C-shaped clamps are clamped in the area where the bubbles are sparse at the edge of the BIPV assembly and 5mm away from the bubbles, the edge of the area where the bubbles at the edge of the BIPV assembly do not exist, a C-shaped clamp is arranged at the interval of 5C-shaped clamps, and 3/5 circles are slightly turned.
And dibutyl ester is coated around the BIPV assembly and used for accelerating the melting of the lower PVB layer and the upper PVB layer and preventing bubbles from being generated.
And finally, placing the BIPV assembly into an autoclave for curing treatment, and controlling the cooling time of the autoclave within 30-40 minutes, wherein the control of the cooling time of the autoclave is beneficial to controlling the generation of redundant bubbles.
The BIPV module is required to be quality checked and packaged after production.
Example 1
The detection data show that the temperature of the production site is 20 ℃, the humidity is 25% RH, and the requirements are met. Determining the size of the produced BIPV assembly, then determining the occupation of a heating plate in a laminating machine, arranging point thermometers, and measuring that the temperature difference between the point thermometers is less than 2 ℃. The laminator bladder does not form an inherent imprint and does not require replacement.
Placing the glass sheets on a material platform to remove impurities, blow and dry, and then preparing to combine the glass sheets: and sequentially stacking and laying the lower-layer toughened glass, the lower-layer PVB, the battery string group, the upper-layer PVB and the upper-layer toughened glass.
And placing the laminated BIPV assembly into a laminating machine for preheating and prepressing, and placing the prepressed and molded BIPV assembly into a dehumidification room which is arranged in a workshop separately. Bubbles appear around the edge of the BIPV assembly found by inspection, the bubbles are punctured by using a 1mm round steel needle, then dibutyl ester is smeared around the BIPV assembly, the dibutyl ester is sent into a high-pressure kettle for curing treatment, the temperature is reduced after 35 minutes, the BIPV assembly is manufactured, and no bubbles appear in the assembly.
Example 2
The detection data show that the temperature of the production site is 22 ℃, the humidity is 30% RH, and the requirements are met. Determining the size of the produced BIPV assembly, then determining the occupation of a heating plate in a laminating machine, arranging point thermometers, and measuring that the temperature difference between the point thermometers is less than 2 ℃. The laminator bladder does not form an inherent imprint and does not require replacement.
Placing the glass sheets on a material platform to remove impurities, blow and dry, and then preparing to combine the glass sheets: and sequentially stacking and laying the lower-layer toughened glass, the lower-layer PVB, the battery string group, the upper-layer PVB and the upper-layer toughened glass.
And placing the laminated BIPV assembly into a laminating machine for preheating and prepressing, and placing the prepressed and molded BIPV assembly into a dehumidification room which is arranged in a workshop separately. And (3) detecting that small-area dense bubbles appear around the edge of the BIPV assembly, closely clamping a plurality of C-shaped clamps, slightly rotating for 3/4 circles, then smearing dibutyl ester around the BIPV assembly, sending the mixture into a high-pressure kettle for curing, cooling after 32 minutes, finishing the manufacturing of the BIPV assembly, and enabling the assembly not to have bubbles.
The technical scheme adopted by the invention achieves the technical effects that: through improvement of each process link, the possibility of generating bubbles by the BIPV assembly is reduced to the minimum, and the bubbles can be effectively eliminated through the method after the bubbles are generated, so that the double-glass assembly is more attractive, has longer service life and has higher practicability.
Example 3
When lower floor's toughened glass and upper toughened glass are the type glass that punches, before carrying out the piece that closes of BIPV subassembly, place a PVB fritter respectively in the bottom in lower floor's toughened glass's hole and the top in upper toughened glass's hole, the diameter of PVB fritter exceeds aperture 1 ~ 3cm, carries out the piece that closes of BIPV subassembly again. The arrangement of the PVB small blocks reduces the possibility of generating air bubbles due to glue shortage at the periphery of the holes in the toughened glass.
If bubbles appear near the holes of the pre-pressed and formed BIPV assembly, the bubbles are punctured by a round steel needle with the diameter of 0.5-1.5 mm.

Claims (9)

1. A processing method for eliminating bubbles of a BIPV assembly is characterized by comprising the following specific processing steps:
(1) determining the size of the produced BIPV assembly and the occupation of the BIPV assembly on a heating plate of a laminating machine, and respectively detecting the temperature of four occupied sides of the BIPV assembly;
(2) detecting the flatness of the air bag of the laminating machine;
(3) matching the upper layer of toughened glass and the lower layer of toughened glass to ensure that the curvature, thickness and length deviation of the upper layer of toughened glass and the lower layer of toughened glass are within a certain tolerance range;
(4) drying the upper layer of toughened glass and the lower layer of toughened glass;
(5) sequentially stacking and laying the lower layer toughened glass, the lower layer PVB, the battery string group, the upper layer PVB and the upper layer toughened glass to complete laminating of the BIPV assembly;
(6) placing the laminated BIPV assembly into a laminating machine for preheating and prepressing treatment;
(7) placing the BIPV assembly subjected to pre-pressing forming into a dehumidifying room independently arranged in a workshop;
if bubbles appear around the edge of the pre-pressed and molded BIPV assembly, puncturing the bubbles by using a steel needle, or clamping a C-shaped clamp at the edge of the BIPV assembly;
(8) coating materials for accelerating the melting of the lower PVB layer and the upper PVB layer to prevent bubbles from being generated around the BIPV assembly treated in the step (7);
(9) putting the BIPV assembly treated in the step (8) into a high-pressure kettle for curing treatment, and controlling the temperature reduction time to be 30-40 min;
controlling the temperature and humidity of the production site in the steps (1) to (9) to be as follows: the temperature is less than or equal to 22 ℃, and the humidity is less than or equal to 30 percent RH;
in the step (2), if the inherent mark formed by the air bag of the laminating machine cannot be matched with the BIPV assembly, the air bag of the laminating machine needs to be replaced;
in the step (5), the edges of the lower layer of toughened glass and the upper layer of toughened glass are wrapped by the lower layer of PVB and the upper layer of PVB.
2. The process of defoaming BIPV modules of claim 1 wherein: in the step (1), four point thermometers are respectively placed at four sides of the BIPV assembly occupied area of the heating plate of the laminating machine, and the temperature difference measured by any two point thermometers is less than 2 ℃.
3. The process of defoaming BIPV modules of claim 2, wherein said process comprises: when the temperature difference measured by any two point thermometers is more than or equal to 2 ℃, the oil circuit of the laminating machine is checked and maintained.
4. The process of defoaming BIPV modules of claim 1 wherein: and (4) drying the upper layer of toughened glass and the lower layer of toughened glass in a manner of purging, drying and removing impurities from the upper layer of toughened glass and the lower layer of toughened glass.
5. The process of defoaming BIPV modules of claim 1 wherein: and (5) respectively placing PVB small blocks with the diameter exceeding the aperture of 1-3 cm at the bottom of the hole of the lower layer of toughened glass and the top of the hole of the upper layer of toughened glass when the lower layer of toughened glass and the upper layer of toughened glass are the punching glass.
6. The process of defoaming BIPV modules of claim 1 wherein: in the step (7), the temperature and humidity of the dehumidification room are controlled as follows: the temperature is 20-25 ℃, and the humidity is 25% -30% RH.
7. The process of defoaming BIPV modules of claim 1 wherein: in the step (7), the steel needle is a circular steel needle with the diameter of 0.5-1.5 mm.
8. The process of defoaming BIPV modules of claim 1 wherein: in the step (7), a plurality of C-shaped clamps are clamped in close proximity in the area with dense bubbles at the edge of the BIPV assembly, and the rotation is carried out for 3/4 circles; clamping a C-shaped clamp in a region 5mm away from bubbles in a sparse region of the bubbles at the edge of the BIPV assembly; at the edge of the bubble free area of the BIPV module, a C-clip was placed every 5C-clip lengths, making 3/5 light turns.
9. The process of defoaming BIPV modules of claim 1 wherein: in the step (8), the material comprises dibutyl ester.
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CN102779876A (en) * 2012-08-01 2012-11-14 保定嘉盛光电科技有限公司 Full-glass assembly and manufacture method thereof
CN106098822A (en) * 2016-06-21 2016-11-09 南通久立安全玻璃有限公司 A kind of double glass photovoltaic module and the equipment of manufacture thereof and manufacture method

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CN101866962A (en) * 2010-06-19 2010-10-20 浙江环球光伏科技有限公司 BIPV (Building Integrated Photovoltaics) solar module and manufacture method thereof
CN102779876A (en) * 2012-08-01 2012-11-14 保定嘉盛光电科技有限公司 Full-glass assembly and manufacture method thereof
CN106098822A (en) * 2016-06-21 2016-11-09 南通久立安全玻璃有限公司 A kind of double glass photovoltaic module and the equipment of manufacture thereof and manufacture method

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