WO2019196332A1

WO2019196332A1 - Curved photovoltaic tile and preparation method therefor

Info

Publication number: WO2019196332A1
Application number: PCT/CN2018/105322
Authority: WO
Inventors: 程晓龙; 顾鸿扬; 张继凯; 陆玉钊; 季福钢
Original assignee: 北京汉能光伏投资有限公司
Priority date: 2018-03-19
Filing date: 2018-09-12
Publication date: 2019-10-17
Also published as: CN110289330A; CN208028074U

Abstract

A curved photovoltaic tile and preparation method therefor. The curved photovoltaic tile comprises: a light-transmissive rigid panel (1); a photovoltaic cell module (2) connected to the light-transmissive rigid panel (1) by means of a first adhesive layer (4); and a flexible backplate (3) connected to the photovoltaic cell module (2) by means of a second adhesive layer (5). The light-transmissive rigid panel (1), the first adhesive layer (4), the photovoltaic cell module (2), the second adhesive layer (5), and the flexible backplate (3) are all curved, and the connection surfaces have the same waviness.

Description

Curved photovoltaic tile and preparation method thereof

cross reference

The present application claims the priority of the Chinese Patent Application No. 20181033337.

Technical field

The present disclosure relates to photovoltaic power generation technology, and in particular to a curved photovoltaic tile and a method of fabricating the same.

Background technique

The curved photovoltaic tile in the prior art comprises a front panel glass, a back panel glass, and a multi-layer composite structure such as a sandwich film disposed between the two, and a photovoltaic cell module. The multi-layer composite structure has high requirements for the degree of coincidence. The core process of the preparation method of the existing curved photovoltaic tile is to put the completed multi-layer composite structure into a laminating machine for pre-compression, and then send it into the autoclave to complete the pressing.

It is to be noted that the information disclosed in the foregoing background section is only for enhancement of background understanding of the present disclosure, and thus it may include information that does not constitute the prior art known to those of ordinary skill in the art.

Summary of the invention

The present disclosure provides a curved photovoltaic tile and a method of preparing the same.

The present disclosure provides a curved photovoltaic tile comprising:

Light-transmissive rigid panel,

a photovoltaic cell module connected to the light transmissive rigid panel by a first bonding layer;

a flexible back sheet connected to the photovoltaic cell module through a second bonding layer;

The transparent rigid panel, the first bonding layer, the photovoltaic cell module, the second bonding layer and the flexible backing plate are all curved, and the undulating arc of the connecting surface is uniform.

According to an embodiment of the present disclosure, the photovoltaic cell module includes: a flexible thin film solar cell and a diode disposed on one side of the flexible thin film solar cell.

According to an embodiment of the present disclosure, the flexible back sheet is provided with a moisture barrier layer.

According to an embodiment of the present disclosure, a package apron is disposed between the transparent rigid panel and the flexible back panel.

According to an embodiment of the present disclosure, the outer side of the flexible back sheet is provided with a weather resistant polymer material layer.

According to an embodiment of the present disclosure, the light transmissive rigid panel, the first bonding layer, the photovoltaic cell module, the second bonding layer, and the flexible backing plate are sinusoidal in longitudinal cross-sectional shape parallel to the extending direction of the wave. curve.

According to an embodiment of the present disclosure, the light transmissive rigid panel, the first bonding layer, the photovoltaic cell module, the second bonding layer, and the flexible backing plate are all wavy.

According to an embodiment of the present disclosure, the number of the waves is 2 to 5, preferably 4 to 5.

According to an embodiment of the present disclosure, the peaks and valleys of the waves and the peaks have a range of 25 mm to 100 mm, preferably 40 mm to 100 mm.

The present disclosure also provides a method of preparing the above curved photovoltaic tile, comprising the following steps:

Provide a light-transparent rigid panel.

Laminating a first bonding layer, a photovoltaic cell module, a second bonding layer and a flexible backing plate on one side of the light-transmissive rigid panel to form a pre-lamination assembly;

The pre-lamination assembly is placed in a flexible sealed bag and continuously vacuumed and heated to perform a lamination process to obtain the curved photovoltaic tile;

Wherein, the transparent rigid panel, the first bonding layer, the photovoltaic cell module, the second bonding layer and the flexible backing plate are all curved and laid in a uniform undulation.

According to an embodiment of the present disclosure, the degree of vacuum in the flexible sealed bag is from -85 kPa to -100 kPa.

According to an embodiment of the present disclosure, after the pre-lamination assembly is placed in the flexible sealed bag, before the continuous vacuuming and heating, the method further comprises: pre-vacuating the flexible sealed bag, preferably vacuum cooling Pumping.

According to an embodiment of the present disclosure, the flexible sealed bag is a soft silicone bag or a rubber bag.

According to an embodiment of the present disclosure, the placing the pre-lamination assembly in a flexible sealed bag for continuous vacuuming and heating comprises: opening an upper layer of the flexible sealed bag, below the flexible sealed bag The pre-lamination assembly is placed on the mesh cloth, the upper layer of the flexible sealing bag is closed, and the edge of the flexible sealing bag is pressed to form a sealed space of the flexible sealed bag, and the flexible sealed bag is continuously evacuated and heated.

According to an embodiment of the present disclosure, it is also included to manufacture hot air forced convection on the periphery of the flexible sealed bag while the lamination process.

According to an embodiment of the present disclosure, the heating temperature in the lamination process is controlled to be between 70 ° C and 160 ° C.

According to an embodiment of the present disclosure, the heating step of the lamination process is:

The first period of time: heating the pre-lamination assembly at 70 ° C ~ 100 ° C for 5 to 10 minutes;

The second period of time: heating to 120 ° C ~ 130 ° C, heating for 5 to 10 minutes;

The third period: heating to 140 ° C ~ 150 ° C, heating for 5 to 10 minutes; and

The fourth period: heating to 150 ° C ~ 160 ° C, heating for 20 to 70 minutes.

According to an embodiment of the present disclosure, after the lamination treatment, the surface temperature of the heated flexible sealed pouch is lowered to a preset temperature.

According to an embodiment of the present disclosure, the preset temperature is 50 ° C - 70 ° C, preferably, the predetermined temperature is 55 ° C - 65 ° C, and further preferably, the predetermined temperature is 58 ° C - 62 ° C.

The invention also provides a method for preparing the above curved photovoltaic tile, comprising the following steps:

Provide a light-transparent rigid panel.

The pre-lamination assembly is placed in a flexible sealing device, continuously vacuumed and heated, and subjected to a lamination process to obtain the curved photovoltaic tile;

According to the description of the above technical solution, the beneficial effects of the present disclosure are:

The present disclosure replaces the double glass structure in the prior art curved photovoltaic tile by adopting the composite structure of the light-transmissive rigid panel and the flexible backboard, so that the flexible backboard can conform to the transparent rigid panel, thereby fundamentally solving the problem of material matching. The dimensional tolerance of the transparent rigid panel raw materials is greatly relaxed, which greatly reduces the cost of raw materials in production.

By adopting a vacuum heating lamination one-step molding method, instead of the two-step lamination process of the laminating machine and the autoclave which are necessary in the prior art, the process yield and efficiency problems of the curved profiled component are solved, and the equipment investment is greatly increased. The reduction further reduces the preparation cost of the curved photovoltaic tile.

The above general description and the following detailed description are intended to be illustrative and not restrictive.

DRAWINGS

In order to make the embodiments of the present disclosure easier to understand, the following detailed description will be made in conjunction with the accompanying drawings. It should be noted that the various components are not necessarily drawn to scale and are for the purpose of illustration only. In fact, the dimensions of the various components can be arbitrarily enlarged or reduced in order to make the discussion clear and easy to understand.

1 is a schematic structural view of a curved photovoltaic tile according to an embodiment of the present disclosure;

2 is a process flow diagram of preparing a curved photovoltaic tile according to an embodiment of the present disclosure.

Reference mark:

1: light transparent panel

2: Photovoltaic battery module

3: Flexible backplane

4: first bonding layer

5: second bonding layer

21: Flexible thin film solar cell

22: Diode

detailed description

The following content provides many different embodiments or examples to implement the various components of the disclosed embodiments. Specific examples of components and configurations are described below to simplify embodiments of the present disclosure. Of course, these are merely examples and are not intended to limit the embodiments of the present disclosure. Embodiments of the present disclosure may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplification and clarity, and is not intended to identify the relationship between the various embodiments and/or configurations discussed. In addition, descriptions of well-known structures and techniques are omitted in the following description in order to avoid unnecessarily obscuring the concept of the present disclosure.

In the embodiments of the present disclosure, a component is formed on another component, connected to another component, and/or coupled to another component, which may include an embodiment in which the component is directly in contact with another component, and may also include Embodiments are formed in which additional components are interposed between these components such that they are not in direct contact. Furthermore, for ease of describing the relationship between one component and another component of an embodiment of the present disclosure, spatially related terms may be used herein, for example, "lower", "higher", "horizontal", "vertical" Spatial terms related to "above", "above", "below", "under", "up", "down", "top", "bottom", etc. (eg " Horizontally, "vertically", "upward", "downward", etc.). These spatially related terms are intended to encompass different orientations of the devices that comprise these components.

The structure of the existing curved photovoltaic tile often has the following defects: Firstly, the structure adopts the double glass structure of the front plate glass + the back plate glass, the double glass has a large weight, and the double glass structure has extremely high requirements for the matching of the two layers of glass (in accordance with the requirements) The gap is not more than 0.1mm), which leads to low glass yield, which leads to low glass raw material production capacity and high procurement cost, which is one of the factors restricting the cost reduction of curved photovoltaic tile. Secondly, due to the double glass structure, the requirements for the degree of coincidence are extremely high. It is high, so it must be formed by hot bending, and it cannot be tempered. Therefore, the surface hardness of the curved photovoltaic tile is only 30% of that of tempered glass, and the strength is extremely poor.

In addition, the preparation method of curved photovoltaic tile also has various defects. For example, the planar structure of the laminating machine cannot fully adapt to the required process of the wave component, resulting in low heat conduction efficiency of the heating table during the processing, prolonged lamination time, and debris. High rate, so that the lamination time is long, the pressure is low, and it is impossible to form an effective component reliability structure requirement; due to the capacity design, 4-5 laminating machines need to match one autoclave, and the equipment cost is high; Two repeated heatings in the laminator and the autoclave result in waste and inefficiency; the two lamination processes in the laminator and the autoclave are difficult to control, the yield of the production line is low, and the cost of loss is high; the double glass structure is Reliability deviations in the TC200 test required by IEC61646.

To this end, the present disclosure provides a structure of a curved photovoltaic tile and a method of fabricating the same. FIG. 1 is a schematic structural view of a curved photovoltaic tile according to an embodiment of the present disclosure.

As shown in FIG. 1 , the curved photovoltaic tile comprises: a transparent rigid panel 1 , a photovoltaic cell module 2 and a flexible back panel 3 , and the photovoltaic cell module 2 is connected to the transparent rigid panel 1 through the first bonding layer 4 , and the flexible back The board 3 is connected to the photovoltaic cell module 2 via a second bonding layer 5. The transparent rigid panel 1, the first adhesive layer 4, the photovoltaic cell module 2, the second adhesive layer 5, and the flexible backsheet 3 are all curved, and the undulations of the connecting surfaces are uniform.

The light-transmissive rigid panel 1 and the flexible backsheet 3 constitute a protective layer of the outermost layer to protect the internal photovoltaic cell module 2. The first bonding layer 4 and the second bonding layer 5 are respectively used for bonding and fixing the light-transmitting rigid panel 1, the photovoltaic cell module 2, and the flexible backing plate 3, so that the three forms a stable and reliable structure.

The light-transmissive rigid panel 1 includes a light-receiving surface and a backlight surface, which have good light transmittance. The light-transmissive rigid panel 1 serves as a front panel of the curved photovoltaic tile, and the sunlight is irradiated to the photovoltaic cell module 2 through the light-receiving surface of the light-transmissive rigid panel 1. In some embodiments, the light transmissive rigid panel is curved tempered glass, preferably ultra-white curved tempered glass, but is not limited thereto. Compared with ordinary glass, the strength of tempered glass is higher, which makes the surface strength of curved photovoltaic tile stronger.

The photovoltaic cell module 2 is a thin film structure and is a core power generation part of the photovoltaic cell. In some embodiments, the photovoltaic cell module 2 includes a flexible thin film solar cell 21 and a diode 22 disposed on one side of the flexible thin film solar cell 21. Wherein, the flexible thin film solar cell 21 is interconnected and arranged into a required specification by a plurality of flexible thin film solar cells; the diode 22 is a bypass diode which is antiparallel connected to both ends of the flexible thin film solar cell 21, thereby effectively preventing solar energy Some of the batteries in the strong light due to occlusion caused some of them to become severely damaged by the load due to lack of illumination.

In this embodiment, the diodes 22 may also be disposed on both sides of the flexible thin film solar cell 21. The flexible backsheet 3 is the outermost structure of the curved photovoltaic tile. In some embodiments, the flexible backsheet 3 has a specially treated layer of polymeric material. Preferably, the layer of polymeric material is disposed on the outside of the flexible backsheet. The special treatment refers to weather resistance treatment (for example, light resistance, heat and cold resistance, weather resistance, corrosion resistance, bacteria resistance, etc.), and further advantageous effects of this embodiment are through the outer side of the flexible back sheet 3. The addition of a polymer material layer enhances the weather resistance of the flexible back sheet and effectively ensures the service life of the curved photovoltaic tile. The polymer material layer includes, but not limited to, polyvinyl fluoride, ethylene-tetrafluoroethylene copolymer, and the like.

In some embodiments, the flexible backsheet 3 is also provided with a moisture barrier layer, preferably disposed inside the flexible backsheet. The moisture barrier layer includes, but is not limited to, an aluminum structural layer. By adding a water vapor barrier layer, the water vapor transmission rate of the flexible back sheet is improved, so that the curved photovoltaic tile has extremely low water vapor transmission.

The photovoltaic cell module 2 is connected to the transparent rigid panel 1 through the first bonding layer 4, and the flexible backsheet 3 is connected to the photovoltaic cell module through the second bonding layer 5. In some embodiments, the materials of the first adhesive layer and the second adhesive layer are respectively selected from an ethylene-vinyl acetate copolymer (EVA), a polyolefin elastomer (POE), and a poly One of PVB (polyvinyl butyral) and 2,4,6-trimethylbenzoyldiphenyl phosphine oxide (TPO). The polyolefin elastomer is preferably a high polymer of ethylene and butene or a high polymer of ethylene and octene.

In some embodiments, the curved photovoltaic tile further includes a package apron disposed at a periphery between the light transmissive rigid panel 1 and the flexible backsheet 3 for the transparent rigid panel 1 and the flexible backsheet 3 The various components (such as photovoltaic module 2, etc.) are packaged therein. The encapsulating apron has a very high moisture barrier to prevent moisture ingress at the edges of the components. Preferably, the encapsulating rubber ring is made of butyl rubber, but is not limited thereto.

In some embodiments, the components constituting the curved photovoltaic tile: the transparent rigid panel 1, the photovoltaic cell module 2, the flexible backsheet 3, the first bonding layer 4, and the second bonding layer 5 are all curved, preferably It is wavy. By making full use of the soft characteristics of the photovoltaic cell module and the flexible backsheet, all the flexible materials can easily fit the shape of the transparent transparent panel of the front panel, thereby fundamentally solving the problem of material matching. Wherein, the longitudinal cross-sectional shape of each component parallel to the extending direction of the wave is a sinusoid; the number of the waves is 2 to 5, preferably 4 to 5; the fluctuation range of the peaks and valleys of the wave is 25 to 100 mm, preferably 40 to 100 mm. The components are held in conformity with each other in a undulating arc. Higher fluctuation ranges and more wave numbers can effectively improve the appearance of the product and reduce the cost, if the technical difficulties are increased by the conventional techniques in the art and the production cost is increased. To this end, the present disclosure also provides a method for preparing a curved photovoltaic tile, which utilizes a flexible material to conform to the shape of the rigid material, and can be subjected to a one-step lamination process, which is simple in process, cost-effective, and at the same time achieves good and gain effects.

Specifically, FIG. 2 is a process flow diagram of preparing a curved photovoltaic tile according to an embodiment of the present disclosure. As shown in FIG. 2, the method for preparing a curved photovoltaic tile includes the following steps:

Provide a light-transparent rigid panel.

The pre-lamination assembly is placed in a flexible sealed bag, continuously vacuumed and heated, and subjected to a lamination process to obtain the curved photovoltaic tile;

Specifically, the light-receiving surface of the cleaned transparent rigid panel 1 is placed on the work surface, and the first adhesive layer 4, the photovoltaic cell module 2, and the second adhesive layer 5 are sequentially laid from the backlight surface side. The flexible backboard 3 is configured such that each layer structure conforms to the curved shape of the light-transmissive rigid panel 1 and maintains the undulating curvature. Then, the crests, troughs, and two short sides of the light-transmissive rigid panel 1 and the flexible backsheet 3 are fixed with adhesive tape or tape to form a pre-lamination assembly.

The flexible sealed bag is a soft silicone bag or a rubber bag. The upper layer of the flexible sealed bag is opened, the pre-lamination assembly is placed on the lower mesh of the flexible sealed bag, and the upper layer of the flexible sealed bag is closed to press the edge of the flexible sealed bag to form a sealed space of the flexible sealed bag. The flexible sealed bag in which the pre-lamination assembly is placed is placed on the surface of the laminate to be fed into the heating chamber, and an internal vacuum tube is attached to the flexible sealed bag. Closing the heating chamber door, opening the heating switch, simultaneously opening the vacuum valve to continuously vacuum the flexible sealing bag, and pre-laminating the assembly under vacuum high temperature condition, the first bonding layer 4 and the second bonding Layer 5 bonds the layers tightly at elevated temperatures. The flexible sealed bag can also be a flexible sealing device of other materials.

In some embodiments, before the step of forming the pre-lamination assembly, the step of assembling the photovoltaic cell module further includes: disposing the flexible thin film solar cell 21; and arranging the diode 22 on the arranged flexible thin film solar cell 21. And electrode lead wires. The disposing of the flexible thin film solar cell 21 specifically includes: interconnecting the plurality of flexible thin film solar cells 21 according to design specifications. Arranging the diode 22 and the electrode lead-out line on the arranged flexible thin film solar cell 21 includes: arranging diodes and positive and negative lead wires on the arranged flexible thin film solar cells 21 according to design requirements to form a photovoltaic cell module group.

In some embodiments, the vacuum environment has a vacuum of from -85 kPa to -100 kPa, preferably a vacuum of from -90 kPa to -100 kPa.

In some embodiments, after placing the pre-lamination assembly in a flexible sealed bag, before continuously evacuating and heating, the method further comprises: pre-vacuating the flexible sealed bag, preferably vacuum cooling. Specifically, before the flexible sealed bag is sent into the heating chamber, the external vacuum tube is connected, and the flexible sealed bag is vacuum-cooled at room temperature, so that the vacuum degree in the flexible sealed bag reaches -85 kPa to -100 kPa in advance, preferably Ground, reaching -90kPa ~ -100kPa. The pre-vacuum can be used to avoid the effects of the rapid increase in temperature during the heating lamination process, and the expansion of the remaining gas in the flexible sealed bag that has not yet reached the vacuum requirement affects the lamination process. In addition, it can prevent when the internal vacuum has not reached the required value, but the encapsulation rubber around the pre-lamination assembly is bonded to the upper and lower encapsulation layers, resulting in prematurely forming a confined space inside, and the internal gas is not completely eliminated, forming an appearance. Poor bubbles, etc., have an impact on product reliability.

In some embodiments, further comprising creating hot air forced convection on the periphery of the flexible sealed bag in the heating chamber. The hot air forces the convection through the heating chamber to force the convection fan. Among them, the effect of forced convection by hot air is to achieve uniform heating, so as to better bond between the layers, and further achieve a better bonding effect. In addition, the flexible sealed bag can be subjected to other infrared heat conduction methods such as electric infrared heating and heat conduction oil heating, so as to be more favorable for the heating effect.

In some embodiments, the heating temperature during the lamination process is controlled between 70 °C and 160 °C. In some embodiments, the heating step of the lamination process is:

By the heating method of the above lamination treatment, bubbles and adhesion defects can be effectively controlled, and product consistency and yield can be improved.

Specifically, the pre-lamination assembly is heated for a predetermined period of time and a corresponding temperature and time before being placed in the heating chamber, for example:

The first time period: the temperature is 100 ° C, and the heating time is 5 to 10 minutes;

The second period of time: temperature 130 ° C, heating time 5 to 10 minutes;

The third time period: temperature 150 ° C, heating time 5 to 10 minutes;

The fourth time period: temperature 160 ° C, heating time 20 to 70 minutes.

In some embodiments, after the vacuum heating lamination process is finished, the forced convection fan, the heating switch and the vacuuming valve are sequentially closed, the flexible sealed bag is taken out and sent to the cooling zone, and the cooling fan is turned on until the surface temperature of the flexible sealing bag is lowered. Set the temperature. Wherein, the preset temperature is 50 ° C - 70 ° C. Preferably, the predetermined temperature is from 55 ° C to 65 ° C, and further preferably, the predetermined temperature is from 58 ° C to 62 ° C. By setting the preset temperature for cooling, the production operation can be ensured safely, and the risk of burns caused by the worker's contact with the high temperature of the flexible sealed bag can be avoided; in addition, the preset temperature cannot be set too low to avoid the temperature being too high and not being cured. The adhesiveness of the adhesive is poor, and the flexible backsheet on the back of the product has the risk of delamination.

In some embodiments, the upper layer of the cooled, flexible sealed pouch is opened to perform quality inspection, testing, and assembly of the laminated assembly. specifically:

The curved photovoltaic tile obtained after the lamination process is transported to the visual inspection table for quality inspection;

The appearance of the curved photovoltaic tile is trimmed, specifically, the edge overflow is removed by a hot cutter;

Conduct an IV test on curved photovoltaic tiles. Where I represents current and V represents voltage;

Insulation withstand voltage test on curved photovoltaic tiles;

Assembly of junction boxes for curved photovoltaic tiles.

It can be seen from the above embodiments that the present disclosure replaces the double-glass structure of the prior art, and adopts a flexible back sheet and a flexible thin film solar cell to fit the rigid panel to construct a curved photovoltaic tile, thereby solving the problem of material matching and greatly relaxing. The dimensional tolerance of the light rigid panel raw materials (accepting tolerance 10-15 times) reduces the cost of raw materials; since the compatibility requirements of matching and matching are not necessary, the transparent rigid panel can be made of tempered glass, so that the curved photovoltaic tile has High surface strength.

The method for preparing a curved photovoltaic tile of the present disclosure adopts a new vacuum heating lamination process to complete the lamination at one time without the pressure applied by the autoclave, compared with the two-step lamination process of the laminator and the autoclave in the prior art. The process yield and work efficiency of the surface shaped component can be effectively solved, and the equipment investment of the whole process is relatively reduced, further reducing the preparation cost of the curved photovoltaic tile, and is suitable for industrial mass production.

The present disclosure has been disclosed above in several embodiments to enable those skilled in the art to understand this disclosure. Those skilled in the art can use the present disclosure to design or adapt other processes and structures to achieve the same objectives of the embodiments and/or achieve the same advantages of the embodiments. Those skilled in the art will appreciate that the above-described equivalents are not departing from the spirit and scope of the present disclosure, and may be variously changed, substituted, and adjusted without departing from the spirit and scope of the disclosure.

Claims

A curved photovoltaic tile comprising:

Light-transmissive rigid panel,

a photovoltaic cell module connected to the light transmissive rigid panel by a first bonding layer;

a flexible back sheet connected to the photovoltaic cell module through a second bonding layer;

The transparent rigid panel, the first bonding layer, the photovoltaic cell module, the second bonding layer and the flexible backing plate are all curved, and the undulating arc of the connecting surface is uniform.
The curved photovoltaic tile of claim 1, wherein the photovoltaic cell module comprises: a flexible thin film solar cell and a diode disposed on a side of the flexible thin film solar cell.
The curved photovoltaic tile of claim 1 wherein said flexible backing plate is provided with a moisture barrier layer.
The curved photovoltaic tile of claim 1 , wherein a package apron is disposed between the transparent rigid panel and the flexible backsheet.
The curved photovoltaic tile according to claim 1, wherein the outer side of the flexible backing plate is provided with a weather resistant polymer material layer.
The curved photovoltaic tile of claim 1 , wherein the transparent rigid panel, the first bonding layer, the photovoltaic cell module, the second bonding layer, and the flexible backing plate are all wavy.
The curved photovoltaic tile according to claim 6, wherein the number of the waves is 2 to 5.
The curved photovoltaic tile according to claim 6, wherein the peaks and valleys of the waves have a range of 25 mm to 100 mm.
A method of preparing the curved photovoltaic tile of any of claims 1-8, comprising the steps of:

Provide a light-transparent rigid panel.

Laminating a first bonding layer, a photovoltaic cell module, a second bonding layer and a flexible backing plate on one side of the light-transmissive rigid panel to form a pre-lamination assembly;

The pre-lamination assembly is placed in a flexible sealed bag and continuously vacuumed and heated to perform a lamination process to obtain the curved photovoltaic tile;

Wherein, the transparent rigid panel, the first bonding layer, the photovoltaic cell module, the second bonding layer and the flexible backing plate are all curved and laid in a uniform undulation.
The production method according to claim 9, wherein the degree of vacuum in the flexible sealed bag is from -85 kPa to -100 kPa.
The preparation method according to claim 9, wherein said placing said pre-lamination assembly in a flexible sealed bag for continuous evacuation and heating comprises: opening an upper layer of said flexible sealed bag at said flexibility The pre-lamination assembly is placed on the lower layer of the sealed bag, and the upper layer of the flexible sealed bag is closed to press the edge of the flexible sealing bag to form a sealed space of the flexible sealed bag, and the flexible sealed bag is continuously evacuated and heated.
The production method according to claim 9, further comprising manufacturing hot air forced convection on the periphery of the flexible sealed bag while the laminating treatment.
The production method according to claim 9, wherein the heating temperature in the laminating treatment is controlled to be between 70 ° C and 160 ° C.
The production method according to claim 13, wherein the heating step of the lamination treatment is:

The first period of time: heating the pre-lamination assembly at 70 ° C ~ 100 ° C for 5 to 10 minutes;

The second period of time: heating to 120 ° C ~ 130 ° C, heating for 5 to 10 minutes;

The third period: heating to 140 ° C ~ 150 ° C, heating for 5 to 10 minutes; and

The fourth period: heating to 150 ° C ~ 160 ° C, heating for 20 to 70 minutes.
The production method according to claim 13 or 14, wherein after the laminating treatment, the surface temperature of the heated flexible sealed pouch is lowered to a preset temperature.
The production method according to claim 15, wherein the preset temperature is from 50 ° C to 70 ° C.
The preparation method according to claim 9, wherein the flexible sealed bag is a soft silicone bag or a rubber bag.
The preparation method according to claim 9, wherein after the pre-lamination assembly is placed in the flexible sealed bag, before the continuous evacuation and heating, the method further comprises: pre-vacuating the flexible sealed bag.
The preparation method according to claim 18, wherein the flexible sealed bag is pre-vacuumed at room temperature.
A method of preparing the curved photovoltaic tile of any of claims 1-8, comprising the steps of:

Provide a light-transparent rigid panel.

Laminating a first bonding layer, a photovoltaic cell module, a second bonding layer and a flexible backing plate on one side of the light-transmissive rigid panel to form a pre-lamination assembly;

The pre-lamination assembly is placed in a flexible sealing device, continuously vacuumed and heated, and subjected to a lamination process to obtain the curved photovoltaic tile;

Wherein, the transparent rigid panel, the first bonding layer, the photovoltaic cell module, the second bonding layer and the flexible backing plate are all curved and laid in a uniform undulation.