Mounting structure and pressing tool for a flexible photovoltaic module

Abstract

The present application relates to photovoltaic module, specifically disclose a kind of installation structure of flexible photovoltaic module, including hyperboloid metal substrate (1), adhesive layer (2) being arranged in the hyperboloid metal substrate (1) and the flexible photovoltaic module (3) connected with the adhesive layer (2), the adhesive layer (2) includes at least two of first adhesive layer (201) being arranged in annular structure around the upper surface of the hyperboloid metal substrate (1), second adhesive layer (202) being arranged in annular structure in the inner side of the first adhesive layer (201) and third adhesive layer (203) being arranged in the inner side of the second adhesive layer (202) and being distributed in cross grid shape.In addition, the present application also discloses the pressing tool of flexible photovoltaic module.The installation structure of flexible photovoltaic module of the present application can guarantee the stability of bonding, and also can resist the ability of partial elastic vibration, simple structure, and good bonding effect.

Description

Technical Field

[0001] The present invention relates to a photovoltaic module, and in particular to a mounting structure for a flexible photovoltaic module. Furthermore, the present invention also relates to a pressing tool for the flexible photovoltaic module. Background Art

[0002] Flexible photovoltaic modules can not only be placed on flat color steel tile roofs, but can also be directly pasted on light loads and curved structures. They can be used in factories and can also be used in special scenes such as special landscape lights, portable mobile power supplies, robots and outdoor activities. The diversification of application scenarios of photovoltaic modules also puts forward diversified requirements for the preparation of photovoltaic module products.

[0003] Among the existing flexible photovoltaic modules, Figure 1 As shown, the photovoltaic laminate is formed using a hot lamination process, while the skeleton packaging component is formed using a hot melt composite process. The photovoltaic laminate includes a front packaging portion, a cell string layer, and a back packaging portion, which are laminated and composited together. The photovoltaic laminate and the skeleton packaging component are then composited and composited together using a cold bonding process to form the photovoltaic packaging assembly. In existing photovoltaic packaging assemblies, the adhesive layer is provided between the photovoltaic laminate and the skeleton packaging component, requiring not only a secure bond but also the ability to resist some elastic vibrations.

[0004] Based on the above reasons, it is difficult in the existing technology to effectively ensure that the adhesive layer has a good ability to resist partial elastic vibration on the basis of stable adhesion. Summary of the Invention

[0005] The first problem to be solved by the present invention is to provide a mounting structure for a flexible photovoltaic module. The mounting structure of the flexible photovoltaic module realizes the bonding of the flexible photovoltaic module and the hyperbolic metal substrate by setting the adhesive layer as a two-layer ring structure and a cross grid structure located in the central area. It not only ensures the stability of the bonding, but also has the ability to resist some elastic vibrations. It has a simple structure and good bonding effect.

[0006] In addition, the problem that the present invention also aims to solve is to provide a pressing tool for a flexible photovoltaic module. The pressing tool is configured by arranging a slide rail base plate with a curved surface structure on the tool base, clamping the flexible photovoltaic module and the hyperbolic metal substrate with a clamp, and pressing along the upper curved surface of the flexible photovoltaic module with an elastic pressing part. The structure is simple and the use effect is good.

[0007] In order to solve the above technical problems, the present invention provides, on the one hand, an installation structure of a flexible photovoltaic module, including a hyperbolic metal substrate, an adhesive layer arranged on the hyperbolic metal substrate, and a flexible photovoltaic module connected to the adhesive layer, the adhesive layer including at least two of a first adhesive layer in an annular structure arranged around the upper surface of the hyperbolic metal substrate, a second adhesive layer in an annular structure arranged on the inner side of the first adhesive layer, and a third adhesive layer in a cross-grid distribution arranged on the inner side of the second adhesive layer.

[0008] As a preferred structural form of the present invention, the adhesive layer includes the first adhesive layer, the second adhesive layer and the third adhesive layer from the outside to the inside, the first adhesive layer is a polyurethane structural adhesive layer, the second adhesive layer is a double-sided butyl adhesive layer, and the third adhesive layer is a two-component organic silicone layer.

[0009] As another preferred structural form of the present invention, the blank area between the third adhesive layers is formed as a fourth adhesive layer.

[0010] More preferably, the hyperbolic metal substrate is a stainless steel hyperbolic metal substrate.

[0011] As another preferred structural form of the present invention, a fluorine layer backboard is provided on the side of the flexible photovoltaic module close to the hyperbolic metal substrate.

[0012] On the other hand, the present invention also provides a pressing tool for a flexible photovoltaic module, including a tool base and an elastic pressing part. The upper end surface of the tool base is provided with a slide rail bottom plate, and the slide rail bottom plate is provided with multiple clamps and bottom molds. The lower surface of the hyperbolic metal substrate is abutted against the upper surface of the bottom mold. Each of the clamps can clamp the surface of the flexible photovoltaic module. The elastic pressing part is suitable for pressing the upper surface of the flexible photovoltaic module so that the hyperbolic metal substrate and the flexible photovoltaic module can be bonded through the adhesive layer.

[0013] As a specific structural form of the present invention, a plurality of mutually parallel slide rail grooves are provided on the slide rail bottom plate, and each of the clamps can be slidably connected to the slide rail grooves.

[0014] More specifically, a plurality of workpiece support rods are further provided on the lower surface of the bottom mold, and the lower end of each workpiece support rod is arranged in the slide rail groove.

[0015] As another specific structural form of the present invention, the elastic pressing part includes two columns arranged on both sides of the tooling base, the columns are provided with column slide grooves, the column slide grooves are provided with sliding connectors for sliding connection, the upper part of the column is provided with a spring adjustment rod, a spring is provided between the lower end of the spring adjustment rod and the sliding connector, and an airbag pressing member is provided between the two sliding connectors, and the airbag pressing member is suitable for pressing the upper surface of the flexible photovoltaic component.

[0016] As another specific structural form of the present invention, the pressing tool for the flexible photovoltaic module further includes a driving mechanism, which includes a driving motor arranged at the lower part of the tool base and a roller connected to the driving motor.

[0017] According to the above technical solution, the mounting structure of a flexible photovoltaic module of the present invention includes a hyperbolic metal substrate, an adhesive layer disposed on the hyperbolic metal substrate, and a flexible photovoltaic module connected to the adhesive layer. The adhesive layer includes at least two of a first adhesive layer disposed in an annular structure around the upper surface of the hyperbolic metal substrate, a second adhesive layer disposed in an annular structure inside the first adhesive layer, and a third adhesive layer disposed in a cross-grid pattern inside the second adhesive layer. The mounting structure of the flexible photovoltaic module of the present invention provides the adhesive layer with not only temperature-sensitive adhesive properties but also the ability to resist partial elastic vibration by configuring the adhesive layer as a first adhesive layer and a second adhesive layer having an annular structure, and configuring the third adhesive layer having a cross-grid pattern within the second adhesive layer, or configuring the adhesive layer as a combination of the second adhesive layer and the first adhesive layer, or the second adhesive layer and the third adhesive layer. The structure is simple and has good performance.

[0018] Other advantages of the present invention and the technical effects of the preferred embodiments will be further described in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of an installation structure of a flexible photovoltaic module according to an embodiment of the prior art;

[0020] Figure 2 1 is a schematic structural diagram of an adhesive layer according to an embodiment of the present invention;

[0021] Figure 3 yes Figure 2 Front view of

[0022] Figure 4 Schematic diagram of the structure of a hyperbolic metal substrate, an adhesive layer and a flexible photovoltaic module according to an embodiment of the present invention;

[0023] Figure 5 It is a structural schematic diagram of a pressing tool for a flexible photovoltaic module according to an embodiment of the present invention.

[0024] Description of Reference Numerals

[0025] 1 Hyperbolic metal substrate 2 Adhesive layer

[0026] 201 first adhesive layer 202 second adhesive layer

[0027] 203 third adhesive layer 204 fourth adhesive layer

[0028] 3 Flexible photovoltaic modules 4 Pressing tooling

[0029] 401 tooling base 402 slide rail base

[0030] 403 slide rail groove 404 fixture

[0031] 405 bottom mold 406 elastic pressing part

[0032] 4061 column 4062 column slide

[0033] 4063 spring adjustment rod 4064 spring

[0034] 4065 airbag pressing part 4066 sliding connection part

[0035] 407 workpiece support rod 408 drive motor

[0036] 409 roller DETAILED DESCRIPTION

[0037] The following describes the specific embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0038] First of all, it should be noted that the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features.

[0039] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted" and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections or indirect connections through an intermediate medium; they may refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0040] like Figures 2 to 4 As shown, on one hand, the present invention provides a mounting structure for a flexible photovoltaic module, comprising a hyperbolic metal substrate 1, an adhesive layer 2 arranged on the hyperbolic metal substrate 1, and a flexible photovoltaic module 3 connected to the adhesive layer 2, wherein the adhesive layer 2 comprises at least two of a first adhesive layer 201 in a ring-shaped structure arranged around the upper surface of the hyperbolic metal substrate 1, a second adhesive layer 202 in a ring-shaped structure arranged on the inner side of the first adhesive layer 201, and a third adhesive layer 203 arranged on the inner side of the second adhesive layer 202 and distributed in a cross-grid shape.

[0041] In the present application, the adhesive layer 2 has the following three specific embodiments: First, it includes a first adhesive layer 201, a second adhesive layer 202 and a third adhesive layer 203. Second, it includes a first adhesive layer 201 and a second adhesive layer 202. Third, it includes a second adhesive layer 202 and a third adhesive layer 203. Preferably, the adhesive layer 2 includes a first adhesive layer 201, a second adhesive layer 202 and a third adhesive layer 203. The combination of the other two adhesive layers can also achieve the bonding of the hyperbolic metal substrate 1 and the flexible photovoltaic module 3. It has a simple structure and is easy to operate. However, the structural strength is slightly different from that of the first specific embodiment. The adhesive layer 2 of different embodiments can be selected according to the actual use environment. The setting area of ​​the adhesive layer 2 of each embodiment is determined according to the actual use requirements and all fall within the scope of protection of the present invention.

[0042] As a preferred embodiment of the present invention, Figure 4 As shown, the upper and lower surfaces of the hyperbolic metal substrate 1 of the present invention are both formed into a curved surface structure, the upper surface is formed into a curved surface convex outward, and the lower surface is basically parallel to the upper surface. Preferably, the flexible photovoltaic module 3 is 1.7m long, 0.7m wide, 1mm thick, and the highest point is 40mm away from the horizontal plane. After the flexible photovoltaic module 3 is attached to the hyperbolic metal substrate 1, it is also formed into a curved surface structure convex outward. Therefore, such a structure has relatively high requirements for the adhesive layer 2, and long-term outdoor use requires even higher requirements for the structure after bonding. Therefore, the adhesive layer 2 of the present invention includes a first adhesive layer 201, a second adhesive layer 202 and a third adhesive layer 203, wherein, as shown in FIG. Figure 3As shown, the first adhesive layer 201 is disposed along the four edges of the upper surface of the hyperbolic metal substrate 1. Preferably, the first adhesive layer 201 is a polyurethane structural adhesive layer, forming a ring-shaped structure. The width a of the first adhesive layer 201 is 10-15 mm, and the thickness is 0.5-1 mm. Because polyurethane structural adhesives have relatively high bonding properties with both metals and composite materials, the ring-shaped polyurethane structural adhesive disposed along the four edges of the upper surface of the hyperbolic metal substrate 1 effectively ensures the bond strength between the hyperbolic metal substrate 1 and the flexible photovoltaic module 3. The second adhesive layer 202 is preferably a double-sided butyl adhesive layer, surrounding the inner side of the first adhesive layer 201. Combined with the special properties of double-sided butyl adhesive, it is resistant to elastic deformation and has effective waterproofing properties. Therefore, the second adhesive layer 202 effectively provides a sealant structure between the hyperbolic metal substrate 1 and the flexible photovoltaic module 3 that resists elastic deformation and has adhesive properties. Preferably, the width b of the second adhesive layer 202 is 15-35 mm and the thickness is 0.5-1 mm. The third adhesive layer 203 is preferably a two-component organic silicone layer, and the third adhesive layer 203 is distributed in a cross-grid pattern, which can further strengthen the bonding strength between the hyperbolic metal substrate 1 and the flexible photovoltaic module 3. Due to the inherent sealing properties of the second adhesive layer 202, the third adhesive layer 203 is not easily exposed to water or moisture during daily use of the hyperbolic metal substrate 1 and the flexible photovoltaic module 3, thereby extending the service life of the third adhesive layer 203. Preferably, the width c of the third adhesive layer 203 is 5-20 mm and the thickness is 0.5-1 mm. The grid edge spacing d of the third adhesive layer 203 is 100-200 mm. Since the first adhesive layer 201, the second adhesive layer 202 and the third adhesive layer 203 of the present invention cooperate with each other, the cured adhesive layer 2 has adhesion and elastic properties, high fatigue resistance, can effectively resist slight vibrations and transmission forces, and extend the service life of the adhesive layer 2.

[0043] It can be imagined that a blank area is formed in the central area of ​​the second adhesive layer 202 distributed in a cross-grid pattern. When the flexible photovoltaic module 3 is pressed onto the hyperbolic metal substrate 1, the air in the blank area is squeezed, and the pressure in this area will be lower than the external pressure, which has a certain adsorption effect on the hyperbolic metal substrate 1 and the flexible photovoltaic module 3, so that the two will not separate in the initial bonding stage when the adhesive layer 2 is not completely cured.

[0044] As a preferred embodiment of the present invention, the blank area between the third adhesive layers 203 is formed as the fourth adhesive layer 204 .

[0045] When the grid spacing between the intersecting grid structures of the third adhesive layer 203 of the present invention is large, a fourth adhesive layer 204 can be formed in the blank areas. The fourth adhesive layer 204 is preferably a polyurethane structural adhesive. This avoids the situation where the bonding strength between the hyperbolic metal substrate 1 and the flexible photovoltaic module 3 is reduced due to the large blank areas. It should be noted that the fourth adhesive layer 204 can be circular and does not necessarily need to completely fill the blank areas. The diameter of the circle is determined by the actual size of the blank areas and is still within the scope of protection of the present invention.

[0046] As another preferred embodiment of the present invention, the hyperbolic metal substrate 1 is a stainless steel hyperbolic metal substrate.

[0047] The hyperbolic metal substrate 1 of the present invention is preferably a stainless steel hyperbolic metal substrate. The stainless steel hyperbolic metal substrate is preferably 304 stainless steel, which has a standard composition of 18% chromium and 8% nickel. It is non-magnetic and its metallographic structure cannot be altered by heat treatment. Its GB designation is 06Ce19Ni10.

[0048] Accordingly, to ensure good bonding performance, the flexible photovoltaic module 3 is equipped with a fluorine-layer backsheet on the side closest to the hyperbolic metal substrate 1. This fluorine-layer backsheet is typically divided into an outer layer, an intermediate layer, and an inner layer, from bottom to top. These three layers have different functions. The outer layer, directly exposed to the external environment, is typically made of a weather-resistant fluorine layer, ensuring long-term use in external environments and excellent mechanical properties. The intermediate layer primarily provides mechanical properties, electrical insulation, and durability, and is typically made of PET polyester. The inner layer primarily ensures good bonding performance with the adhesive layer 2 and also requires certain weather and UV resistance and high reflectivity.

[0049] In addition, if Figure 5 As shown, on the other hand, the present invention further provides a pressing tool 4 for a flexible photovoltaic module, including a tool base 401 and an elastic pressing portion 406, the upper end surface of the tool base 401 is provided with a slide rail bottom plate 402, and the slide rail bottom plate 402 is provided with multiple clamps 404 and a bottom mold 405, the lower surface of the hyperbolic metal substrate 1 is abutted against the upper surface of the bottom mold 405, and each of the clamps 404 can clamp the surface of the flexible photovoltaic module 3, and the elastic pressing portion 406 is suitable for pressing the upper surface of the flexible photovoltaic module 3 so that the hyperbolic metal substrate 1 and the flexible photovoltaic module 3 can be bonded through the adhesive layer 2.

[0050] from Figure 5As can be seen in the figure, the pressing tool 4 of the present invention includes a tool base 401, the upper end surface of which is provided with a slide base 402, on which is provided a bottom mold 405 and a plurality of clamps 404. The bottom mold 405 is formed into an upwardly convex strip-shaped curved surface with the same curvature as the hyperbolic metal substrate 1. There are at least four clamps 404, which are respectively arranged at the four corners of the bottom mold 405 to press the surface of the hyperbolic metal substrate 1 and / or the surface of the flexible photovoltaic module 3. This can effectively prevent the adhesive layer 2 from curing during the curing process due to excessive local stress on the four sides caused by surface shrinkage of the bonding surface, thereby affecting the bonding effect. The elastic pressing portion 406 can press the upper surface of the flexible photovoltaic module 3, forming full-surface contact with the flexible photovoltaic module 3, making the adhesive layer 2 between the hyperbolic metal substrate 1 and the flexible photovoltaic module 3 more uniform.

[0051] Specifically, a plurality of mutually parallel slide rail grooves 403 are provided on the slide rail base plate 402 , and each of the clamps 404 can be slidably connected to the slide rail grooves 403 .

[0052] As a specific structural form of the present invention, a plurality of workpiece support rods 407 are further provided on the lower surface of the bottom mold 405 , and the lower end of each workpiece support rod 407 is disposed in the slide rail groove 403 .

[0053] As another specific structural form of the present invention, the elastic pressing part 406 includes two columns 4061 arranged on both sides of the tooling base 401, and a column slide groove 4062 is provided on the column 4061, and a sliding connector 4066 is provided in the column slide groove 4062. A spring adjustment rod 4063 is provided on the upper part of the column 4061, and a spring 4064 is provided between the lower end of the spring adjustment rod 4063 and the sliding connector 4066. An airbag pressing member 4065 is provided between the two sliding connectors 4066, and the airbag pressing member 4065 is suitable for pressing the upper surface of the flexible photovoltaic component 3.

[0054] It is conceivable that the airbag pressing member 4065 of the present invention can be filled with different amounts of gas according to the actual pressing requirements to meet the actual pressing requirements. In addition, when the airbag pressing member 4065 contacts the upper surface of the flexible photovoltaic assembly 3, if the pressure is too high, the force applied to the flexible photovoltaic assembly 3 can be adjusted by the spring 4064 to avoid excessive or insufficient pressure. In addition, by adjusting the spring adjustment rod 4063, the initial compression amount of the spring 4064 can be effectively adjusted to avoid excessive or insufficient pressure on the airbag pressing member 4065, which causes excessive or insufficient pressure to cause the pressing transition or uneven pressing, resulting in an increase in the product defect rate. The spring 4064 of the present invention is connected between the spring adjustment rod 4063 and the sliding connector 4066, rather than the spring 4064 being mounted on the spring adjustment rod 4063. This can provide both initial pressure and contraction when the pressure is too high.

[0055] As another specific structural form of the present invention, the pressing tool 4 of the flexible photovoltaic module also includes a driving mechanism, which includes a driving motor 408 arranged at the lower part of the tool base 401 and a roller 409 connected to the driving motor 408.

[0056] As can be seen from the above description, the mounting structure of the flexible photovoltaic module of the present invention optimizes the design of the adhesive layer 2 of the prior art. While achieving excellent strength, adhesion, and fatigue resistance, it effectively controls the cost of adhesive bonding, facilitating large-scale production and application. Furthermore, the pressing fixture of the flexible photovoltaic module of the present invention ensures that when the flexible photovoltaic module 3 is bonded to the hyperbolic metal substrate 1 of the hyperbolic structure, the surface of the flexible photovoltaic module 3 is smoothly pressed, resulting in a smoother bonding. Furthermore, the multiple clamps 404 can effectively prevent the flexible photovoltaic module 3 from cracking due to shrinkage of the adhesive layer 2 during the curing process, effectively improving the product qualification rate.

[0057] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the scope of protection of the present invention.

[0058] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0059] In addition, the various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A pressing tool for a flexible photovoltaic module, characterized in that: The utility model comprises a tool base (401) and an elastic pressing portion (406), wherein the upper end surface of the tool base (401) is provided with a slide rail base plate (402), and the slide rail base plate (402) is provided with a plurality of clamps (404) and a bottom mold (405), the lower surface of the hyperbolic metal substrate (1) is in contact with the upper surface of the bottom mold (405), and each of the clamps (404) can clamp the surface of the flexible photovoltaic module (3), and the elastic pressing portion (406) comprises two columns (4061) arranged on both sides of the tool base (401), and the columns (4061) are provided with column slide grooves (4062). A sliding connector (4066) is provided in the column slide groove (4062), a spring adjustment rod (4063) is provided on the upper part of the column (4061), a spring (4064) is provided between the lower end of the spring adjustment rod (4063) and the sliding connector (4066), and an airbag pressing member (4065) is provided between the two sliding connectors (4066), and the airbag pressing member (4065) is suitable for pressing the upper surface of the flexible photovoltaic module (3) so that the hyperbolic metal substrate (1) and the flexible photovoltaic module (3) can be bonded through the adhesive layer (2).

2. The pressing tool for the flexible photovoltaic module according to claim 1, characterized in that: The slide rail base plate (402) is provided with a plurality of mutually parallel slide rail grooves (403), and each of the clamps (404) can be slidably connected to the slide rail grooves (403).

3. The pressing tool for the flexible photovoltaic module according to claim 2, characterized in that: The lower surface of the bottom mold (405) is further provided with a plurality of workpiece support rods (407), and the lower end of each workpiece support rod (407) is arranged in the slide rail groove (403).

4. The pressing tool for the flexible photovoltaic module according to any one of claims 1 to 3, characterized in that: The flexible photovoltaic assembly pressing tool (4) further comprises a driving mechanism, wherein the driving mechanism comprises a driving motor (408) arranged at the lower part of the tool base (401) and a roller (409) connected to the driving motor (408).

5. A flexible photovoltaic module installation structure, characterized in that: A flexible photovoltaic module formed by a press tool according to any one of claims 1 to 4 comprises a hyperbolic metal substrate (1), an adhesive layer (2) arranged on the hyperbolic metal substrate (1), and a flexible photovoltaic module (3) connected to the adhesive layer (2), wherein the adhesive layer (2) comprises at least two of a first adhesive layer (201) arranged on the upper surface of the hyperbolic metal substrate (1) in an annular structure, a second adhesive layer (202) arranged on the inner side of the first adhesive layer (201) and in an annular structure, and a third adhesive layer (203) arranged on the inner side of the second adhesive layer (202) and distributed in a cross-grid shape.

6. The installation structure of the flexible photovoltaic module according to claim 5, characterized in that: The adhesive layer (2) comprises, from the outside to the inside, the first adhesive layer (201), the second adhesive layer (202), and the third adhesive layer (203), wherein the first adhesive layer (201) is a polyurethane structural adhesive layer, the second adhesive layer (202) is a double-sided butyl adhesive layer, and the third adhesive layer (203) is a two-component organic silicone layer.

7. The installation structure of the flexible photovoltaic module according to claim 5, characterized in that: The blank area between the third adhesive layers (203) forms a fourth adhesive layer (204).

8. The installation structure of the flexible photovoltaic module according to claim 5, characterized in that: The hyperbolic metal substrate (1) is a stainless steel hyperbolic metal substrate.

9. The installation structure of the flexible photovoltaic module according to claim 5, characterized in that: A fluorine layer back plate is provided on the side of the flexible photovoltaic assembly (3) close to the hyperbolic metal substrate (1).

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