阅读说明：本技术 一种曲面光伏的工艺流程及曲面光伏 (Curved surface photovoltaic process flow and curved surface photovoltaic ) 是由 冯晨笛 陈燕平 林俊良 林金锡 林金汉 于 2021-08-19 设计创作，主要内容包括：本发明属于曲面光伏的技术领域,具体涉及一种曲面光伏的工艺流程及曲面光伏,这种曲面光伏的工艺流程及曲面光伏包括如下步骤：步骤一：将光伏玻璃的表面铺设封装材料,形成第一封装层,将电池排布于封装材料上,将电池进行串接,形成电池层；步骤二：在电池层上铺设第二封装材料,形成第二封装层,在第二封装层的表面盖上背板玻璃；步骤三：在第一封装层、电池层和第二封装层的侧边用封边胶带进行封边,形成预制样品；步骤四：对预制样品进行预层压,在预层压时将双玻组件放入层压机进行层压。这种曲面光伏的工艺流程及曲面光伏能够达到弯曲组件的效果,不会导致电池的破碎从而降低整体功率。(The invention belongs to the technical field of curved surface photovoltaics, and particularly relates to a process flow of a curved surface photovoltaic and the curved surface photovoltaic, wherein the process flow of the curved surface photovoltaic and the curved surface photovoltaic comprise the following steps: the method comprises the following steps: laying an encapsulating material on the surface of the photovoltaic glass to form a first encapsulating layer, arranging the cells on the encapsulating material, and connecting the cells in series to form a cell layer; step two: laying a second packaging material on the battery layer to form a second packaging layer, and covering the surface of the second packaging layer with back plate glass; step three: edge sealing is conducted on the side edges of the first packaging layer, the battery layer and the second packaging layer through edge sealing adhesive tapes to form a prefabricated sample; step four: the pre-fabricated sample is pre-laminated, and the dual glass assembly is placed into a laminator for lamination during pre-lamination. The process flow of the curved photovoltaic and the curved photovoltaic can achieve the effect of bending the assembly, and the breaking of the battery cannot be caused, so that the overall power is reduced.)

1. The process flow of the curved photovoltaic is characterized by comprising the following steps:

the method comprises the following steps: laying an encapsulating material on the surface of the photovoltaic glass (1) to form a first encapsulating layer (2), arranging the batteries on the encapsulating material, and connecting the batteries in series to form a battery layer (3);

step two: laying a second packaging material on the battery layer (3) to form a second packaging layer (4), and covering the surface of the second packaging layer (4) with back plate glass (5);

step three: edge sealing (6) is carried out on the side edges of the first packaging layer (2), the battery layer (3) and the second packaging layer (4) by using edge sealing (6) adhesive tapes to form a prefabricated sample;

step four: pre-laminating the prefabricated sample, and putting the dual-glass assembly into a laminating machine for laminating during pre-laminating;

step five: vacuumizing and maintaining the pressure of the prefabricated sample, and preparing the prefabricated sample into an incomplete crosslinking state;

step six; taking the prefabricated sample out of the vacuum machine, and fixing the prefabricated sample on a mould with adjustable curvature to adjust the curvature;

step seven: and (3) placing the prefabricated sample in an autoclave for cold bending, heating to 100-140 ℃, pressurizing to 800-1200Kpa, and maintaining the pressure for 20-40 minutes.

2. The process flow of the curved photovoltaic system and the curved photovoltaic system of claim 1,

step seven: the cold bending technology comprises the following steps: firstly, planar pre-lamination; and secondly, laminating the curved surface, namely fixing the assembly on a mould and laminating the cold curved surface.

3. The process flow of curved photovoltaic and curved photovoltaic as claimed in claim 2,

in the first step: the packaging material adopts one or more of EVA and POE.

4. The process flow of curved photovoltaic and curved photovoltaic as claimed in claim 3,

in the fourth step: the temperature of the lamination was set at 120-.

5. The process flow of curved photovoltaic and curved photovoltaic as claimed in claim 4,

in the fifth step: the time for vacuumizing and maintaining the pressure is 350-450 seconds.

6. The process flow of curved photovoltaic and curved photovoltaic as claimed in claim 5,

the degree of crosslinking of the pre-formed sample is: 15 to 30 percent.

7. The process flow of curved photovoltaic and curved photovoltaic as claimed in claim 6,

in the fourth step: the pre-formed samples were pre-laminated using a high temperature high pressure vessel.

8. The utility model provides a curved surface photovoltaic, its characterized in that includes from supreme photovoltaic glass (1), first encapsulated layer (2), battery layer (3), second encapsulated layer (4) and backplate glass (5) of laminating setting in proper order down.

9. The curved photovoltaic device of claim 8,

and edge seals (6) are arranged on the side surfaces of the photovoltaic glass (1), the first packaging layer (2), the battery layer (3), the second packaging layer (4) and the back plate glass (5).

Technical Field

The invention belongs to the technical field of curved surface photovoltaics, and particularly relates to a curved surface photovoltaics and a process flow thereof.

Background

Building Integrated Photovoltaic (PV) is a technology for integrating solar power (Photovoltaic) products into buildings. Building integrated photovoltaics can be divided into two main categories: one is the combination of photovoltaic arrays and buildings. The other is the integration of photovoltaic arrays with buildings. Such as a photovoltaic tile roof, a photovoltaic curtain wall, a photovoltaic daylighting roof and the like. In both of these ways, the integration of photovoltaic arrays with buildings is a common form, particularly with building roofing.

With the continuous advance of carbon neutralization planning, the demand of Building Integrated Photovoltaics (BIPV) is increasing, and the mainstream photovoltaic module or the flat panel module is not qualified for roof environments with different shapes; the glass formed by hot bending can be bent into bent glass with various curvatures according to the requirements on the site, but in the process of manufacturing the photovoltaic module, the bent glass enables the cell pieces to be incapable of being attached and arranged, so that the cell pieces can be incapable of being bent and the upper and lower bent glass pieces can be attached and laminated.

Disclosure of Invention

The invention aims to provide a curved surface photovoltaic process flow and a curved surface photovoltaic, which aim to solve the technical problem that a bent glass cannot be attached to a battery piece, and achieve the aims of attaching the bent glass to the battery piece and attaching and laminating an upper bent glass and a lower bent glass.

In order to solve the technical problem, the invention provides a process flow of curved photovoltaic, which comprises the following steps:

the method comprises the following steps: laying an encapsulating material on the surface of the photovoltaic glass to form a first encapsulating layer, arranging the cells on the encapsulating material, and connecting the cells in series to form a cell layer;

step two: laying a second packaging material on the battery layer to form a second packaging layer, and covering the surface of the second packaging layer with back plate glass;

step three: edge sealing is conducted on the side edges of the first packaging layer, the battery layer and the second packaging layer through edge sealing adhesive tapes to form a prefabricated sample;

step four: pre-laminating the prefabricated sample, and putting the dual-glass assembly into a laminating machine for laminating during pre-laminating;

step five: vacuumizing and maintaining the pressure of the prefabricated sample, and preparing the prefabricated sample into an incomplete crosslinking state;

step six; taking the prefabricated sample out of the vacuum machine, and fixing the prefabricated sample on a mould with adjustable curvature to adjust the curvature;

step seven: and (3) placing the prefabricated sample in an autoclave for cold bending, heating to 100-140 ℃, pressurizing to 800-1200Kpa, and maintaining the pressure for 20-40 minutes.

Further, in the seventh step: the cold bending technology comprises the following steps: firstly, planar pre-lamination; and secondly, laminating the curved surface, namely fixing the assembly on a mould and laminating the cold curved surface.

Further, in the step one: the packaging material adopts one or more of EVA and POE.

Further, in the fourth step: the temperature of the lamination was set at 120-.

Further, in the fifth step: the time for vacuumizing and maintaining the pressure is 350-450 seconds.

Further, the degree of crosslinking of the pre-formed sample is: 15 to 30 percent.

Further, in the fourth step: the pre-formed samples were pre-laminated using a high temperature high pressure vessel.

The invention also provides a curved photovoltaic which comprises photovoltaic glass, a first packaging layer, a battery layer, a second packaging layer and back plate glass which are sequentially attached from bottom to top.

Furthermore, edge sealing is arranged on the side surfaces of the photovoltaic glass, the first packaging layer, the battery layer, the second packaging layer and the back plate glass.

The invention has the beneficial effects that:

1. the photovoltaic module that the first step will range upon range of completion is put into the laminator and is carried out incomplete lamination for the battery piece can not be broken when receiving the packaging material protection bending at this moment of packaging material incomplete cross-linking, then place and put into the autoclave on the design mould and carry out secondary lamination and stereotype the subassembly and reach the effect of crooked subassembly, thereby can not lead to the breakage of battery to reduce whole power simultaneously.

2. The photovoltaic module is processed by a two-step method, the processing steps are simple, bent glass can be attached to the battery piece, and the upper bent glass and the lower bent glass can be attached and laminated.

3. And the prefabricated sample is made into an incomplete crosslinking state through vacuum pressure maintaining, so that the next step of processing the prefabricated sample is facilitated.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic diagram of a curved photovoltaic process and structure according to the present invention;

fig. 2 is a process flow of the curved photovoltaic and a top view of the curved photovoltaic of the present invention.

In the figure:

1. photovoltaic glass; 2. a first encapsulation layer; 3. a battery layer; 4. a second encapsulation layer; 5. back plate glass; 6. And (7) sealing edges.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

as shown in fig. 1 and 2, a process flow of curved photovoltaic includes the following steps:

the method comprises the following steps: laying an encapsulating material on the surface of the photovoltaic glass to form a first encapsulating layer, arranging the batteries on the encapsulating material, and connecting the batteries in series to form a battery layer, wherein the encapsulating material can be but is not limited to one or more of EVA and POE. Step two: laying a second packaging material on the battery layer to form a second packaging layer, and covering the surface of the second packaging layer with back plate glass; step three: edge sealing is conducted on the side edges of the first packaging layer, the battery layer and the second packaging layer through edge sealing adhesive tapes to form a prefabricated sample; step four: pre-laminating the prefabricated sample, placing the dual-glass assembly into a laminating machine for laminating during pre-laminating, wherein the temperature during laminating is set to be 120-140 ℃, and the crosslinking degree of the laminated prefabricated sample is as follows: 15 to 30 percent. In this example, the pre-formed sample is pre-laminated using a high temperature, high pressure vessel, which may be, but is not limited to, an autoclave.

Step five: vacuumizing and maintaining the pressure of the prefabricated sample for 450 seconds, wherein the vacuumizing and maintaining time is 350-450 seconds, and the prefabricated sample is made into an incomplete crosslinking state; step six; taking the prefabricated sample out of the vacuum machine, and fixing the prefabricated sample on a mould with adjustable curvature to adjust the curvature; step seven: placing the prefabricated sample in an autoclave for cold bending, heating to 100-140 ℃, pressurizing to 800-1200Kpa for pressure maintaining for 20-40 minutes, wherein the cold bending technology comprises the following steps: firstly, planar pre-lamination; and secondly, laminating the curved surface, namely fixing the assembly on a mould, and laminating the cold curved surface, wherein the plane is pre-laminated by adopting the existing photovoltaic laminating machine.

Example 2 is another alternative (or preferred) embodiment of the present invention, comprising the steps of:

the method comprises the following steps: laying an encapsulating material on the surface of the photovoltaic glass to form a first encapsulating layer, arranging the batteries on the encapsulating material, and connecting the batteries in series to form a battery layer, wherein the encapsulating material can be but is not limited to one or more of EVA and POE. Step two: laying a second packaging material on the battery layer to form a second packaging layer, and covering the surface of the second packaging layer with back plate glass; step three: edge sealing is conducted on the side edges of the first packaging layer, the battery layer and the second packaging layer through edge sealing adhesive tapes to form a prefabricated sample; step four: pre-laminating the pre-fabricated sample, placing the dual glass assembly into a laminating machine for laminating during pre-laminating, wherein the temperature during laminating is set to be 130 ℃, and the cross-linking degree of the laminated pre-fabricated sample is as follows: 15 to 30 percent. In this example, the pre-formed sample is pre-laminated using a high temperature, high pressure vessel, which may be, but is not limited to, an autoclave.

Step five: vacuumizing and maintaining the pressure of the prefabricated sample for 400 seconds, and preparing the prefabricated sample into an incomplete crosslinking state; step six; taking the prefabricated sample out of the vacuum machine, and fixing the prefabricated sample on a mould with adjustable curvature to adjust the curvature; step seven: placing the prefabricated sample in an autoclave for cold bending, heating to 120 ℃, pressurizing to 1000Kpa for pressure maintaining for 30 minutes, wherein the cold bending technology comprises the following steps: firstly, planar pre-lamination; and secondly, laminating the curved surface, namely fixing the assembly on a mould and laminating the cold curved surface.

The experimental results are as follows:

comparing the EL and power difference of the same module after normal lamination and cold bending, wherein EL is an abbreviation of EL tester, which is called Electroluminescence (EL) tester, and is an internal defect detection device of a solar cell or a cell module. The method is commonly used for detecting internal defects, hidden cracks, fragments, insufficient soldering, broken grids and abnormal phenomena of single cells with different conversion efficiencies of the solar cell module.

Example 3

Fig. 2 shows a curved photovoltaic provided by the invention, which comprises photovoltaic glass, a first packaging layer, a battery layer, a second packaging layer and back plate glass, wherein the photovoltaic glass, the first packaging layer, the battery layer, the second packaging layer and the back plate glass are sequentially attached to each other from bottom to top. The side faces of the photovoltaic glass, the first packaging layer, the battery layer, the second packaging layer and the back plate glass are provided with edge seals.

In view of the above, it is desirable to provide,

all the components selected in the present application are general standard components or components known to those skilled in the art, and the structure and principle thereof can be known to those skilled in the art through technical manuals or through routine experimental methods.

In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.