Photovoltaic glass preparation technology and photovoltaic glass

Abstract

The present invention discloses a photovoltaic glass preparation process and photovoltaic glass, comprising the following steps: S100, a front glass plate, a first adhesive layer, a plurality of thin film batteries, a second adhesive layer, a bus bar and a rear glass plate are sequentially assembled to form a reserved gap between adjacent thin film batteries, wherein a steel needle is inserted into the reserved gap through a port of the reserved gap; S200, a rolling device with a heating device is used to press the laminated glass; S300, the steel needle is removed, and the laminated glass is heated by an autoclave; wherein, before being transported to the autoclave and / or when the laminated glass is heated by the autoclave, the laminated glass is vacuumed. After the laminated glass is rolled, the steel needle is removed, and at this time, a vent hole is reserved at the edge of the laminated glass, so that the thin film battery can be fully evacuated through the vent hole, thereby avoiding the presence of a large number of bubbles during the production of the photovoltaic glass and ensuring the yield of the photovoltaic glass.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic glass, and in particular to a photovoltaic glass preparation process and photovoltaic glass. Background Art

[0002] In the related art, during the preparation of photovoltaic glass, the laminated glass that has been assembled needs to be transported to a rolling device, which heats and rolls the laminated glass. When the laminated glass is heated, the surfaces of the first PVB adhesive layer and the second PVB adhesive layer melt and generate adhesion, thereby preliminarily fixing the assembled glass together. The laminated glass that has been rolled is further heated in an autoclave to produce qualified photovoltaic cells. However, if the thin-film cells in the laminated glass are spaced apart and the spacing is large, bubbles are easily generated in the gaps between the thin-film cells, affecting the yield of the photovoltaic glass. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a photovoltaic glass preparation process, which can increase the yield of photovoltaic glass.

[0004] The invention also provides a photovoltaic glass.

[0005] The preparation process of photovoltaic glass according to the first embodiment of the present invention comprises the following steps:

[0006] S100: The front glass plate, the first adhesive layer, the plurality of thin-film batteries, the second adhesive layer, the bus bar and the rear glass plate are sequentially assembled, each of the thin-film batteries is bonded and arranged between the first adhesive layer and the second adhesive layer, and a reserved gap is formed between adjacent thin-film batteries, the reserved gap has a first strip opening, a second strip opening and a port, the first strip opening is arranged facing the first adhesive layer, and the second strip opening is arranged facing the second adhesive layer, wherein a steel needle is inserted into the reserved gap through the port;

[0007] S200 uses a roller press with a heating device to press the laminated glass.

[0008] S300: removing the steel needles and further processing the laminated glass with an autoclave to produce photovoltaic glass that meets the requirements; wherein, before being transported to the autoclave and / or when the laminated glass is heated with the autoclave, the laminated glass is vacuumed.

[0009] The preparation process of photovoltaic glass according to the embodiment of the present invention has at least the following beneficial effects: before rolling the laminated glass, a section of the steel needle is inserted into the reserved gap between the thin film batteries; after the laminated glass is rolled, the steel needle is pulled out, at this time, the edge of the laminated glass reserves a vent hole connected to the reserved gap between the thin film batteries, avoiding the first adhesive layer and the second adhesive layer from sealing the port of the reserved gap. In addition, since the edge of the thin film battery reserves a vent hole connected to the reserved gap, before the laminated glass is transported to the autoclave or when the autoclave is heating the laminated glass, the thin film battery can be fully evacuated to eliminate the air in the reserved gap, thereby avoiding the appearance of a large number of bubbles in the reserved gap when the autoclave is heating the laminated glass, thereby ensuring the yield rate of the laminated glass.

[0010] According to some embodiments of the present invention, during step S300, the laminated glass is placed in a vacuum bag, and the laminated glass in the vacuum bag is evacuated through a vacuum nozzle of the vacuum bag.

[0011] According to some embodiments of the present invention, step S300 includes the following steps:

[0012] S310, before the laminated glass is transported to the autoclave, the laminated glass is pre-vacuumed through a vacuum nozzle of a vacuum bag;

[0013] S320: When the laminated glass is heated in the autoclave, the laminated glass is subjected to vacuum treatment through a vacuum nozzle of a vacuum bag.

[0014] According to some embodiments of the present invention, during step S300, the heating stages of the laminated glass by the autoclave include at least a first stage, a second stage and a third stage. In the first stage, the indoor temperature of the autoclave is t1, and the indoor pressure is p1; in the second stage, the indoor temperature of the autoclave is t2, and the indoor pressure is p2, and the laminated glass is vacuumed through the vacuum nozzle of the vacuum bag; in the third stage, the indoor temperature of the autoclave is t3, and the indoor pressure is p3, t1≤t2≥t3, p1≤p2≥p3.

[0015] According to some embodiments of the present invention, in the second stage, the pressure inside the autoclave is greater than or equal to 1.5 Bar, and the temperature is not greater than or equal to 110°C.

[0016] According to some embodiments of the present invention, from the first strip-shaped opening to the second strip-shaped opening, the reserved gap is divided into a filling area and a reserved area;

[0017] Wherein, in step S100, a spacer is placed in the filling area so that adjacent thin-film batteries are arranged at intervals, and the steel needle is inserted into the reserved area.

[0018] According to some embodiments of the present invention, during step S100, an insulating tape bonded to a surface of an adjacent thin-film battery is provided at the location of the second strip-shaped opening.

[0019] According to some embodiments of the present invention, the penetration length of the steel needle is between 7 mm and 11 mm, so that the steel needle does not exceed the film removal line position of the thin-film battery.

[0020] According to some embodiments of the present invention, during step S200, the rolling equipment has multiple rolling stages for the laminated glass, and the heating temperature of the laminated glass in each rolling stage is less than or equal to 135 degrees.

[0021] The photovoltaic glass according to the embodiment of the second aspect of the present invention is manufactured by the photovoltaic glass preparation process described above.

[0022] The photovoltaic glass according to the embodiment of the present invention has at least the following beneficial effects: during the manufacturing process of the photovoltaic glass, before the laminated glass is rolled, a section of a steel needle is inserted into the reserved gap between the thin-film batteries; after the laminated glass is rolled, the steel needle is pulled out, and at this time, the edge of the laminated glass reserves a vent hole connected to the reserved gap between the thin-film batteries, thereby preventing the first adhesive layer and the second adhesive layer from sealing the port of the reserved gap. Also, since the edge of the thin-film battery reserves a vent hole connected to the reserved gap, before the laminated glass is transported to the autoclave or when the autoclave is heating the laminated glass, the thin-film battery can be fully evacuated to eliminate the air in the reserved gap, thereby avoiding the appearance of a large number of bubbles in the reserved gap when the autoclave is heating the laminated glass. In summary, it can be seen that the yield of photovoltaic glass is improved by adopting the above-mentioned photovoltaic glass preparation process to manufacture photovoltaic glass.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0025] Figure 1 Schematic diagram of the process of preparing photovoltaic glass according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of a laminated glass according to an embodiment of the present invention at an angle;

[0027] Figure 3 FIG. 2 is a schematic structural diagram of the laminated glass according to another embodiment of the present invention from another angle.

[0028] Reference numerals:

[0029] Laminated glass 100 , front glass plate 110 , first adhesive layer 120 , thin film battery 130 , bus bar 140 , insulating tape 150 , second adhesive layer 160 , rear glass plate 170 , spacer 180 , reserved gap 190 , filling area 191 , reserved area 192 , and steel needle 200 . DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In the description of the present invention, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0034] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0035] According to the first aspect of the present invention, a photovoltaic glass preparation process is disclosed, referring to Figures 1 to 3 , including the following steps:

[0036] S100: The front glass plate 110, the first adhesive layer 120, the plurality of thin film batteries 130, the second adhesive layer 160, the bus bar 140 and the rear glass plate 170 are sequentially assembled, each thin film battery 130 is bonded and arranged between the first adhesive layer 120 and the second adhesive layer 160, and a reserved gap 190 is formed between adjacent thin film batteries 130. The reserved gap 190 has a first strip opening, a second strip opening and a port. The first strip opening is arranged facing the first adhesive layer 120, and the second strip opening is arranged facing the second adhesive layer 160. A steel needle 200 is inserted into the reserved gap 190 through the port;

[0037] S200: using a rolling device with a heating device to press the laminated glass 100 after the laminate is completed, so that one side of the first adhesive layer 120 is bonded to the side of the front glass plate 110, and the other side is bonded to one side of the thin film battery 130, and one side of the second adhesive layer 160 is bonded to the side of the rear glass plate 170, and the other side is bonded to the other side of the thin film battery 130;

[0038] S300 removes the steel needle 200 and further processes the laminated glass 100 using an autoclave to produce photovoltaic glass that meets the requirements; wherein, before being transported to the autoclave and / or when the laminated glass 100 is heated using the autoclave, the laminated glass 100 is vacuumed.

[0039] Specifically, before the laminated glass 100 is rolled, a section of the steel needle 200 is inserted into the reserved gap 190 between the thin film batteries 130; after the laminated glass 100 is rolled, the steel needle 200 is pulled out, and at this time, the edge of the laminated glass 100 reserves a vent hole connected to the reserved gap 190 between the thin film batteries 130, so as to prevent the first adhesive layer 120 and the second adhesive layer 160 from sealing the port of the reserved gap 190. In addition, since the edge of the thin film battery 130 reserves a vent hole connected to the reserved gap 190, before the laminated glass 100 is transported to the autoclave or when the autoclave is heating the laminated glass 100, the thin film battery 130 can be fully evacuated to eliminate the air in the reserved gap 190, thereby preventing a large number of bubbles from appearing in the reserved gap 190 when the autoclave is heating the laminated glass 100, thereby ensuring the yield rate of the laminated glass 100.

[0040] It should be noted that the steel needle 200 is inserted between the thin film batteries 130 before the laminated glass 100 is rolled, that is, during or after the laminated glass 100 is joined, the steel needle 200 can be conveniently inserted between the two thin film batteries 130. If the needle is inserted after rolling, since the first adhesive layer 120 and the second adhesive layer 160 have already sealed the port of the reserved gap 190, the steel needle 200 needs to be inserted into the reserved gap 190 through the adhesive layer, which makes the insertion of the steel needle 200 more troublesome and easily damages the thin film battery 130.

[0041] In order to achieve vacuum treatment of the laminated glass 100, in some embodiments, in step 300, after the steel needles 200 on the edge of the laminated glass 100 are removed, the laminated glass 100 is placed in a vacuum bag and vacuumed through the vacuum nozzle of the vacuum bag.

[0042] Further, step S300 includes the following steps: S310, before the laminated glass 100 is transported to the autoclave, the laminated glass 100 is pre-vacuumed through the vacuum bag's exhaust nozzle; S320, when the laminated glass 100 is processed in the autoclave, the laminated glass 100 is pre-vacuumed through the vacuum bag's exhaust nozzle. In the present application, before the laminated glass 100 is transported to the autoclave, the vacuum bag is vacuumed through the vacuum bag's exhaust nozzle, so that the vacuum bag is in a vacuum environment, thereby avoiding the presence of many bubbles between the thin-film batteries 130 due to the gas in the vacuum bag when the laminated glass 100 is added to the autoclave for processing. In addition, when the autoclave heats the laminated glass 100, the external exhaust device further exhausts air through the vacuum bag's exhaust nozzle, thereby further eliminating the air in the gaps between the thin-film batteries 130, so as to avoid the generation of many bubbles and ensure the yield of the laminated glass 100.

[0043] In some embodiments, in step S100, a spacer 180 located between the thin film batteries 130 is placed on the surface of the first adhesive layer 120. The spacer 180 forms a reserved gap 190 between adjacent thin film batteries 130. The spacer 180 is used to prevent fracturing between adjacent thin film batteries 130. From the first strip opening to the second strip opening, the reserved gap 190 is divided into a filling area 191 and a reserved area 192. The spacer 180 is located in the filling area 191, and a section of the steel needle 200 is inserted into the reserved area 192. By adopting the above arrangement, the spacer 180 is prevented from blocking the vent hole, ensuring that the air in the reserved gap 190 is fully eliminated through the vent hole.

[0044] Furthermore, in step S100, an insulating tape 150 is provided at the position of the second strip opening and is bonded to the surface of the adjacent thin film battery 130. By providing the insulating tape 150, the insulating tape 150 blocks the second strip opening, thereby preventing the second adhesive layer 160 from melting and entering the reserved area 192, thereby blocking the vent hole and ensuring that the air between the thin film batteries 130 is fully evacuated. In addition, the insulating tape 150 also prevents the problem of short circuit between the thin film batteries 130 due to the bus bar 140.

[0045] In some embodiments, the penetration length of the steel needle 200 is between 7 and 11 mm, so that the end of the steel needle 200 does not exceed the position of the film removal line of the thin film battery 130. Specifically, the distance that the steel needle 200 extends is less than or equal to 11 mm, so that the thin film battery 130 will not be damaged due to excessive extension of the steel needle 200, and the distance that the steel needle 200 extends is greater than or equal to 7 mm, so that the distance that the steel needle 200 extends is deep enough, so that after the steel needle 200 is pulled out, the vent hole formed will not be blocked, ensuring that the air between the thin film batteries 130 can be fully drawn away later.

[0046] In some embodiments, along the conveying direction of the laminated glass 100, the rolling process of the rolling equipment includes a first rolling stage, a second rolling stage and a third rolling stage, wherein the heating temperature of the laminated glass 100 by the rolling equipment in the first rolling stage is T1, the heating temperature of the laminated glass 100 by the rolling equipment in the second rolling stage is T2, and the heating temperature of the laminated glass 100 by the rolling equipment in the third rolling stage is T3, and T1≤T2≥T3. As can be seen from the above, when the laminated glass 100 passes through the first rolling stage, the rolling equipment preheats the laminated glass 100, and when the laminated glass 100 passes through the second rolling stage, the rolling equipment heats the laminated glass 100 at a high temperature, so that one side of the first adhesive layer 120 is bonded to the side of the front glass plate 110, and the other side is bonded to one side of the thin film battery 130, and one side of the second adhesive layer 160 is bonded to the side of the rear glass plate 170, and the other side is bonded to the other side of the thin film battery 130; when the laminated glass 100 passes through the third rolling stage, the temperature of the laminated glass 100 is gradually lowered to avoid the laminated glass 100 directly dropping from a high temperature state to a low temperature state, which affects the product yield.

[0047] Furthermore, when the laminated glass 100 is undergoing the second rolling stage, the heating temperature of the laminated glass 100 by the rolling device shall not exceed 135 degrees. In this way, under the premise of ensuring that the laminated glass 100 can be firmly fixed together after being laminated, the rolling temperature of the rolling device is too low, thereby avoiding excessive melting of the first adhesive layer 120 and the second adhesive layer 160, which affects the subsequent exhaust treatment of the laminated glass 100. For details, refer to the following:

[0048] parameter First rolling stage Second rolling stage Second rolling stage temperature Existing technology 140 145 140 Prior art 130 150 130

[0049] In summary, the present application reduces the temperature of each rolling stage based on the existing technology to avoid excessive melting of the first adhesive layer 120 and the second adhesive layer 160 so as to subsequently eliminate the air between adjacent thin-film batteries 130 .

[0050] In some embodiments, during step S300, the heating stage of the laminated glass 100 by the autoclave includes at least the first stage, the second stage and the third stage. In the first stage, the indoor temperature of the autoclave is t1 and the indoor pressure is p1; in the second stage, the indoor temperature of the autoclave is t2 and the indoor pressure is p2, and the laminated glass 100 is vacuumed through the vacuum bag exhaust nozzle; in the third stage, the indoor temperature of the autoclave is t3 and the indoor pressure is p3, t1≤t2≤t3, p1≤p2≤p3. It can be seen from the above that after the laminated glass 100 is transported to the autoclave, when it passes through the first stage, the laminated glass 100 is mainly preheated to prepare for the next stage; when the laminated glass 100 passes through the second stage, the heating temperature and pressure of the autoclave are high enough, the first adhesive layer 120 and the second adhesive layer 160 are gradually and completely melted, and the two sides of the adhesive layer are respectively bonded to the thin film battery 130 and the glass plate. After the laminated glass 100 passes through the second stage, the heating temperature and pressure of the autoclave are further increased, and the laminated glass 100 is in a heat preservation state. The first adhesive layer 120 and the second adhesive layer 160 are completely melted and leveled, thereby finally forming a flat photovoltaic glass.

[0051] It should be noted that in the present application, the vacuum treatment of the laminated glass 100 in the vacuum bag is carried out in the second stage. At this time, it is easier to eliminate the air in the reserved gap 190, thereby avoiding the presence of a large number of bubbles in the preparation of photovoltaic glass in the third stage, which affects the yield of the photovoltaic glass.

[0052] In some embodiments, in the second stage, the pressure value inside the autoclave is greater than or equal to 1.5 Bar, and the temperature is greater than or equal to 110° C. Specifically, in the second stage, the autoclave adopts the above pressure and temperature values, and the first adhesive layer 120 and the second adhesive layer 160 are in a high-temperature molten state, and as much air as possible is extracted from the laminated glass 100 to avoid the generation of bubbles between the laminated glasses 100. For details, refer to the following:

[0053] parameter Existing technology Prior art The first stage constant temperature value (℃) 95 95 First stage constant pressure value (Bar) 0.1 0.1 The first stage stabilization time (min) 10 10 The second stage constant temperature value (℃) 100 120 Second stage constant pressure value (Bar) 0.1 2.0 Second stage stabilization time (min) 20 20 The third stage constant temperature value (℃) 130 130 The third stage constant pressure value (Bar) 11 11 The third stage stabilization time (min) 60 60

[0054] As can be seen from the above, in the present application scheme, the temperature and pressure values ​​of the first and third stages do not need to be adjusted, and only the temperature and pressure values ​​of the second stage need to be increased, which is beneficial to the preparation of the laminated glass 100 and to extract as much air as possible from the laminated glass 100 to avoid the generation of bubbles.

[0055] According to the second aspect of the present invention, photovoltaic glass is disclosed, which is made by the above-mentioned photovoltaic glass preparation process. Specifically, during the production process of photovoltaic glass, before rolling the laminated glass 100 after the assembly is completed, a section of the steel needle 200 is inserted into the reserved gap 190 between the thin film batteries 130; when the laminated glass 100 is rolled, the steel needle 200 is pulled out, at this time, the edge of the laminated glass 100 reserves a vent hole connected to the reserved gap 190 between the thin film batteries 130, so as to avoid the first adhesive layer 120 and the second adhesive layer 160 sealing the port of the reserved gap 190. In addition, since the edge of the thin film battery 130 reserves a vent hole connected to the reserved gap 190, before the laminated glass 100 is transported to the autoclave or when the autoclave heats the laminated glass 100, the thin film battery 130 can be fully evacuated to eliminate the air in the reserved gap 190, thereby avoiding the appearance of a large number of bubbles in the reserved gap 190 when the autoclave heats the laminated glass 100. In summary, it can be seen that by adopting the above-mentioned photovoltaic glass preparation process to produce photovoltaic glass, the yield rate of photovoltaic glass is improved.

[0056] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present invention. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

Claims

1. A photovoltaic glass preparation process, characterized in that: The steps include: S100: The front glass plate, the first adhesive layer, the plurality of thin-film batteries, the second adhesive layer, the bus bar and the rear glass plate are sequentially assembled, each of the thin-film batteries is bonded and arranged between the first adhesive layer and the second adhesive layer, and a reserved gap is formed between adjacent thin-film batteries, the reserved gap has a first strip opening, a second strip opening and a port, the first strip opening is arranged facing the first adhesive layer, and the second strip opening is arranged facing the second adhesive layer, wherein a steel needle is inserted into the reserved gap through the port; S200 uses a roller press with a heating device to press the laminated glass. S300: removing the steel needles and further processing the laminated glass with an autoclave to produce photovoltaic glass that meets the requirements; wherein, before being transported to the autoclave and / or when the laminated glass is heated with the autoclave, the laminated glass is vacuumed.

2. The photovoltaic glass preparation process according to claim 1, characterized in that: In step S300 , the laminated glass is placed in a vacuum bag, and the laminated glass in the vacuum bag is evacuated through a vacuum nozzle of the vacuum bag.

3. The photovoltaic glass preparation process according to claim 2, characterized in that: Step S300 includes the following steps: S310, before the laminated glass is transported to the autoclave, the laminated glass is pre-vacuumed through a vacuum nozzle of a vacuum bag; S320: When the laminated glass is heated in the autoclave, the laminated glass is subjected to vacuum treatment through a vacuum nozzle of a vacuum bag.

4. The photovoltaic glass preparation process according to claim 2, characterized in that: During step S300, the heating stages of the laminated glass by the autoclave include at least a first stage, a second stage and a third stage. In the first stage, the indoor temperature of the autoclave is t1, and the indoor pressure is p1; in the second stage, the indoor temperature of the autoclave is t2, and the indoor pressure is p2, and the laminated glass is vacuumed through the vacuum nozzle of the vacuum bag; in the third stage, the indoor temperature of the autoclave is t3, and the indoor pressure is p3, t1≤t2≤t3, p1≤p2≤p3.

5. The photovoltaic glass preparation process according to claim 4, characterized in that: In the second stage, the pressure inside the autoclave is greater than or equal to 1.5 Bar, and the temperature inside the autoclave is greater than or equal to 110°C.

6. The photovoltaic glass preparation process according to claim 1, characterized in that: From the first strip-shaped opening to the second strip-shaped opening, the reserved gap includes a filling area and a reserved area; Wherein, in step S100, a spacer is placed in the filling area so that adjacent thin-film batteries are arranged at intervals, and the steel needle is inserted into the reserved area.

7. The photovoltaic glass preparation process according to claim 6, characterized in that: In step S100 , an insulating tape bonded to the surface of the adjacent thin-film battery is provided at the position of the second strip-shaped opening.

8. The photovoltaic glass preparation process according to claim 1, characterized in that: The penetration length of the steel needle is between 7 mm and 11 mm, so that the steel needle does not exceed the film removal line position of the thin-film battery.

9. The photovoltaic glass preparation process according to claim 1, characterized in that: During step S200, the rolling equipment has multiple rolling stages for the laminated glass, and the heating temperature of the laminated glass in each rolling stage is less than or equal to 135 degrees.

10. Photovoltaic glass, characterized in that: The photovoltaic glass is manufactured by the photovoltaic glass manufacturing process described in any one of claims 1 to 9.

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