Edge sealing adhesive tape of photovoltaic module, laminated piece and laminated photovoltaic module

Abstract

The utility model discloses an edge sealing adhesive tape of a photovoltaic module, a laminated piece and a laminated photovoltaic module, which are applied to the field of photovoltaic module preparation, one side surface of a base material layer in the edge sealing adhesive tape of the photovoltaic module comprises a middle area and edge areas positioned on two sides of the middle area along the width direction, a POE adhesive film layer is arranged in the middle area of the base material layer, pre-fixed adhesive film layers are arranged in the edge areas of the base material layer, and a release layer is arranged between the POE adhesive film layer and the base material layer. According to the utility model, the POE adhesive film layer can be used for sealing the side edge of the photovoltaic module so as to ensure the blocking effect of the photovoltaic module on water vapor and other impurities, and when the POE adhesive film layer and the photovoltaic module are not tightly attached, the pre-fixing adhesive film layer is used for pre-fixing the edge sealing adhesive tape and the photovoltaic module, so that the sealing effect of the edge sealing adhesive tape and the photovoltaic module is ensured. The POE adhesive film layer is arranged on the base material layer so as to ensure the convenience of sealing the photovoltaic module by the edge sealing adhesive tape, and the separation of the POE adhesive film layer and the base material layer is facilitated by arranging the release layer.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic module preparation field especially relates to a kind of edge sealing adhesive tape, laminated piece and laminated photovoltaic module of photovoltaic module. BACKGROUND

[0002] Photovoltaic module cell has very big sensitivity to water vapor, for photovoltaic module, water vapor is an important factor affecting the performance and life of photovoltaic module, especially for double-glass module, water vapor in the four around of module is easy to invade into module interior, leading to the performance and service life of module are affected, in turn leading to the risk of failure of photovoltaic module.

[0003] Therefore, how to provide a kind of water vapor can effectively prevent invasion in the side of photovoltaic module module interior, avoid photovoltaic module failure, while guarantee the convenience of edge sealing using edge sealing adhesive, it is the technical problem that the technical personnel in the field urgently need to solve. UTILITY MODEL CONTENT

[0004] Therefore, the utility model discloses a kind of edge sealing adhesive tape, laminated piece and laminated photovoltaic module of photovoltaic module, solve the problem that water vapor in the four around of module in prior art is easy to invade into module interior, leading to the performance and service life of module are affected, in turn leading to the risk of failure of photovoltaic module.

[0005] To solve the above technical problems, the utility model provides an edge sealing adhesive tape of photovoltaic module, comprising:

[0006] Base material layer, POE adhesive film layer and pre-fixed adhesive film layer;

[0007] The side surface of the base material layer includes middle region along the width direction, and edge region located at the both sides of the middle region;

[0008] The middle region of the base material layer is provided with the POE adhesive film layer, and the edge region of the base material layer is provided with the pre-fixed adhesive film layer;

[0009] The POE adhesive film layer and the base material layer are provided with release layer.

[0010] Optionally, the release layer is silicone release agent.

[0011] Optionally, the size of the silicone release agent along the width direction is 10-14mm.

[0012] Optionally, the edge sealing adhesive tape corresponds to the middle region, and is provided with exhaust hole penetrating through the base material layer, the release layer and the POE adhesive film layer.

[0013] Optionally, the edge sealing adhesive tape corresponds to the middle region, and is uniformly provided with a plurality of exhaust holes.

[0014] Optionally, the pre-fixed adhesive film layer is a pressure-sensitive adhesive layer.

[0015] The utility model also provides a kind of laminated member, including laminated member main body and the edge sealing tape of photovoltaic module as described above;

[0016] The edge sealing tape is pre-connected to the laminated member main body by the pre-fixed adhesive film layer.

[0017] The POE adhesive film layer covers all side edges of the laminated member main body.

[0018] Optionally, the edge sealing tape area covering the side edges of the laminated member main body is uniformly provided with a plurality of exhaust holes.

[0019] The utility model also provides a kind of laminated photovoltaic module, comprising:

[0020] The POE adhesive film layer in the edge sealing tape of photovoltaic module as described above and laminated photovoltaic module main body.

[0021] The POE adhesive film layer covers at least all side edges of the laminated photovoltaic module main body, and the POE adhesive film layer is an adhesive film layer separated from the remaining structure of the edge sealing tape after being connected with the side edges of the laminated photovoltaic module main body after laminating treatment.

[0022] Optionally, the POE adhesive film layer covers all side edges of the laminated photovoltaic module main body, and the upper side and the lower side of the POE adhesive film layer correspondingly extend to the front surface and the back surface of the laminated photovoltaic module main body, forming the POE adhesive film layer of C-shaped edge covering structure.

[0023] The edge sealing adhesive tape of the photovoltaic module provided by the utility model has the advantages that the POE adhesive film layer is arranged on the middle region of the substrate layer along the width direction, and the pre-fixed adhesive film layer is arranged on both sides of the middle region along the width direction on the surface of the substrate layer on which the POE adhesive film layer is arranged, so that the side edge of the photovoltaic module can be sealed by the POE adhesive film layer, the blocking effect of the photovoltaic module on water vapor and other impurities is ensured, the edge sealing adhesive tape can be pre-fixed to the photovoltaic module by the pre-fixed adhesive film layer when the POE adhesive film layer is not tightly attached to the photovoltaic module, the convenience of the sealing treatment of the photovoltaic module by the edge sealing adhesive tape is ensured, and the POE adhesive film layer and the substrate layer can be separated after the POE adhesive film layer is stably attached to the photovoltaic module.

[0024] In addition, the utility model provides a kind of laminated and laminated photovoltaic module, also have the beneficial effects described above. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows, and obviously, the drawings in the following description are only the embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative labor.

[0026] Figure 1 The structure schematic view of the edge sealing adhesive tape of the photovoltaic module provided by the utility model embodiment is shown;

[0027] Figure 2 The side view structure schematic view of the edge sealing adhesive tape of the photovoltaic module provided by the utility model embodiment is shown;

[0028] Figure 3 The side view structure schematic view of another edge sealing adhesive tape of the photovoltaic module provided by the utility model embodiment is shown;

[0029] Figure 4 The structure schematic view of another edge sealing adhesive tape of the photovoltaic module provided by the utility model embodiment is shown;

[0030] Figure 5 The structure schematic view of a kind of laminated provided by the utility model embodiment is shown;

[0031] Figure 6 A structure schematic view of a laminated photovoltaic module provided by the utility model embodiment;

[0032] Figures 1 to 6 In the drawings, the reference signs are explained as follows:

[0033] 1 - edge sealing tape of photovoltaic module, 2 - laminated part main body, 3 - laminated photovoltaic module main body, 10 - base material layer, 20 - POE adhesive film layer, 21 - POE adhesive film layer of C-shaped edge covering structure, 30 - pre-fixing adhesive film layer, 40 - release layer, 50 - exhaust hole, Specific implementation

[0034] In order to make the purpose, technical scheme and advantages of the utility model embodiments clearer, the technical scheme in the utility model embodiments will be described clearly and completely below in combination with the drawings in the utility model embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0035] The photovoltaic module cell has very great sensitivity to water vapor. For the photovoltaic module, water vapor is an important factor affecting the performance and service life of the photovoltaic module. Especially for the double-glass module, the position around the module is prone to the phenomenon of water vapor invading the inside of the module. In addition, the position of the glass opening of the double-glass module is also prone to the phenomenon of water vapor invading the inside of the module, which affects the performance and service life of the module, and further causes the risk of failure of the photovoltaic module. Therefore, how to provide a photovoltaic module that can effectively prevent water vapor from invading the inside of the photovoltaic module, avoid photovoltaic module failure, and at the same time ensure the convenience of the use of the edge sealing adhesive, is a technical problem that those skilled in the art need to solve.

[0036] The utility model discloses a one side surface of base material layer is along the width direction, and the POE (polyolefin elastomer) adhesive film layer is arranged at the middle region of division, and the pre-fixing adhesive film layer is arranged on both sides of the middle region along the width direction on the surface of the base material layer where the POE adhesive film layer is arranged, which can seal the photovoltaic module by the POE adhesive film layer to ensure the blocking effect of the photovoltaic module on water vapor and other impurities, and the pre-fixing adhesive film layer can pre-fix the edge sealing tape and the photovoltaic module when the POE adhesive film layer is not tightly attached to the photovoltaic module, to ensure the convenience of the sealing treatment of the edge sealing tape on the photovoltaic module, and the release layer is arranged between the POE adhesive film layer and the base material layer, which can separate the POE adhesive film layer and the base material layer after the POE adhesive film layer is stably attached to the photovoltaic module.

[0037] Embodiment 1:

[0038] Please refer toFigure 1 , Figure 1 A structure diagram of an edge sealing adhesive tape of a photovoltaic module is provided in the embodiment of the present application. The edge sealing adhesive tape can include:

[0039] a substrate layer 10, a POE adhesive film layer 20, and a pre-fixed adhesive film layer 30;

[0040] The one side surface of the substrate layer 10 includes a middle region along the width direction, and edge regions located on both sides of the middle region;

[0041] The middle region of the substrate layer 10 is provided with the POE adhesive film layer 20, and the edge regions of the substrate layer 10 are each provided with the pre-fixed adhesive film layer 30;

[0042] The POE adhesive film layer 20 and the substrate layer 10 are provided with a release layer 40.

[0043] In the embodiment, the one side surface of the substrate layer 10 is divided into a middle region along the width direction, and edge regions located on both sides of the middle region. In the embodiment, the above-mentioned middle region and edge regions are not limited to be divided on which side surface of the substrate layer 10, as long as the surface on which the POE adhesive film layer 20 and the pre-fixed adhesive film layer 30 can be arranged can be used, and correspondingly, the number of surfaces of the substrate layer 10 on which the POE adhesive film layer 20 and the pre-fixed adhesive film layer 30 are arranged is not limited in the embodiment. For example, one surface of the substrate layer 10 can be arranged as the surface on which the POE adhesive film layer 20 and the pre-fixed adhesive film layer 30 are arranged, or multiple surfaces of the substrate layer 10 can be arranged as the surfaces on which the POE adhesive film layer 20 and the pre-fixed adhesive film layer 30 are arranged. In the embodiment, the pre-fixed adhesive film layer 30 is an adhesive film layer that does not need to be specially treated and can be adhered and attached to a target object to pre-fix the connection between the edge sealing adhesive tape and the target object. The target object is a photovoltaic module laminated piece.

[0044] For the convenience of understanding, the edge sealing adhesive tape of the photovoltaic module in the embodiment can refer to Figure 2 and Figure 3 , Figure 2 A side view structure diagram of the edge sealing adhesive tape of the photovoltaic module is provided in the embodiment of the present application, Figure 3 A side view structure diagram of another edge sealing adhesive tape of a photovoltaic module is provided in the embodiment of the present application. According to Figure 2 and Figure 3 , it can be determined that the one side surface of the substrate layer 10 forms a region arrangement of edge region-middle region-edge region arranged in sequence in only one direction.

[0045] In addition, the utility model discloses an embodiment through setting the release layer 40 between POE adhesive film layer 20 and base material layer 10, can facilitate POE adhesive film layer 20 and base material layer 10 separate, improve the convenience of edge sealing adhesive tape when application.

[0046] Further, in order to improve the stability and separation effect of the release layer 40, the release layer 40 can be set as a silica gel release agent.

[0047] In the embodiment, the POE adhesive film layer 20 needs to be firmly bonded with the photovoltaic assembly laminate first, and then separated from the base material layer 10. The firm bonding of the POE adhesive film layer 20 with the photovoltaic assembly laminate needs to be achieved during the lamination heating process of the photovoltaic assembly laminate. Therefore, to ensure the stability of the release layer 40 and avoid the release layer 40 from failing during the lamination process of the photovoltaic assembly laminate, the release layer 40 is set as a silica gel release agent to ensure the separation effect, the thermal stability and chemical stability of the release layer 40, and the convenience of using the edge sealing adhesive tape.

[0048] Further, in order to ensure that the POE adhesive film and the base material layer 10 are all filled with the silica gel release agent, the size of the silica gel release agent in the width direction can be set to 10-14 mm.

[0049] In the embodiment, the size of the silica gel release agent in the width direction is set to 10-14 mm. Correspondingly, the size of the POE adhesive film in the width direction can also be set to 10-14 mm. It is necessary to ensure that the size of the POE adhesive film layer 20 in the width direction is less than or equal to the size of the silica gel release agent in the width direction.

[0050] Further, in order to ensure the stability of the pre-fixed connection between the pre-fixed adhesive film and the photovoltaic assembly laminate, the pre-fixed adhesive film layer 30 can be set as a pressure-sensitive adhesive layer.

[0051] In the embodiment, the pre-fixed adhesive film layer 30 is set as a pressure-sensitive adhesive layer, which can realize the pre-fixed connection between the edge sealing adhesive tape and the photovoltaic assembly laminate before the lamination process of the photovoltaic assembly laminate, and improve the efficiency of the edge sealing process of the photovoltaic assembly.

[0052] The edge sealing adhesive tape of the photovoltaic module provided by the embodiment of the utility model includes a substrate layer 10, a POE adhesive film layer 20 and a pre-fixing adhesive film layer 30, one side surface of the substrate layer 10 includes a middle area along the width direction and edge areas located on both sides of the middle area, the middle area of the substrate layer 10 is provided with the POE adhesive film layer 20, the edge areas of the substrate layer 10 are all provided with the pre-fixing adhesive film layer 30, and a release layer 40 is arranged between the POE adhesive film layer 20 and the substrate layer 10. The utility model sets the middle area of the substrate layer 10 along the width direction, sets the POE adhesive film layer 20 at the middle area, sets the pre-fixing adhesive film layer 30 on both sides of the middle area along the width direction at the surface of the substrate layer 10 provided with the POE adhesive film layer 20, the POE adhesive film layer 20 can be used to seal the photovoltaic module, the blocking effect of the photovoltaic module on water vapor and other impurities is ensured, the pre-fixing adhesive film layer 30 is used to pre-fix the edge sealing adhesive tape and the photovoltaic module when the POE adhesive film layer 20 is not tightly attached to the photovoltaic module, the convenience of the sealing treatment of the edge sealing adhesive tape on the photovoltaic module is ensured, and the release layer 40 is arranged between the POE adhesive film layer 20 and the substrate layer 10, so that the POE adhesive film layer 20 and the substrate layer 10 can be separated after the POE adhesive film layer 20 is stably attached to the photovoltaic module.

[0053] In addition, the embodiment of the utility model sets the release layer 40 as a silica gel release agent, ensures the heat stability and chemical stability of the release layer 40 while ensuring the separation effect, so as to ensure the convenience of the use of the above-mentioned edge sealing adhesive tape; the size of the above-mentioned silica gel release agent along the width direction is 10-14 mm, so that the POE adhesive film and the substrate layer 10 are all filled with the silica gel release agent; the pre-fixing adhesive film layer 30 is set as a pressure-sensitive adhesive layer, so that the pre-fixing connection of the edge sealing adhesive tape and the photovoltaic module laminated piece can be realized before the laminated treatment of the photovoltaic module laminated piece, and the efficiency of the edge sealing treatment of the photovoltaic module is improved.

[0054] Embodiment 2:

[0055] Please refer to Figure 4 , Figure 4 The structure diagram of another edge sealing adhesive tape of a photovoltaic module provided by the embodiment of the utility model is shown. Compared with the embodiment 1, the difference is that:

[0056] The edge sealing adhesive tape corresponds to the middle area and is provided with the exhaust hole 50 penetrating the substrate layer 10, the release layer 40 and the POE adhesive film layer 20.

[0057] It needs to be explained that, in the embodiment, the exhaust holes 50 penetrating the base material layer 10, the release layer 40 and the POE film layer 20 are arranged in the edge sealing tape corresponding to the middle area, so that the photovoltaic module laminated piece can be exhausted when the photovoltaic module laminated piece is laminated, and air bubbles in the photovoltaic module laminated piece can be avoided, and the POE film layer 20 softens and flows due to lamination heating when the photovoltaic module laminated piece is laminated, and then the exhaust holes 50 are blocked, and the sealing property of the edge sealing tape is realized after the gas in the photovoltaic module laminated piece is exhausted, and water vapor and impurities are prevented from entering.

[0058] Further, in order to ensure that the internal gas is smoothly exhausted when the photovoltaic module laminated piece is laminated, and ensure that the exhaust holes 50 can be blocked when the laminated piece is heated, the edge sealing tape corresponding to the middle area can be uniformly provided with a plurality of exhaust holes 50.

[0059] It needs to be explained that, in the embodiment, the exhaust holes 50 are uniformly arranged in the edge sealing tape corresponding to the middle area, so that air bubbles in the photovoltaic module laminated piece can be easily exhausted when the exhaust holes 50 are arranged, and the POE film tends to flow after lamination heating and blocks the exhaust holes 50, and the sealing effect of the module is ensured.

[0060] The edge sealing tape of the photovoltaic module provided by the embodiment of the utility model, through setting exhaust holes 50 penetrating base material layer 10, release layer 40 and POE film layer 20 in the edge sealing tape corresponding to the middle area, can realize the exhaust of the photovoltaic module laminated piece when the photovoltaic module laminated piece is laminated, and air bubbles in the photovoltaic module laminated piece can be avoided, and the POE film layer 20 softens and flows due to lamination heating when the photovoltaic module laminated piece is laminated, and then the exhaust holes 50 are blocked, and the sealing property of the edge sealing tape is realized after the gas in the photovoltaic module laminated piece is exhausted, and water vapor and impurities are prevented from entering.

[0061] In addition, the edge sealing tape of the photovoltaic module provided by the embodiment of the utility model, through setting exhaust holes 50 in the edge sealing tape corresponding to the middle area, can ensure that the POE film tends to flow after lamination heating and blocks the exhaust holes 50, and the sealing effect of the module is improved.

[0062] In a feasible embodiment, the edge sealing tape of the photovoltaic module can specifically include the following structure:

[0063] The PET base material layer, the POE film layer and the pressure-sensitive adhesive layer;

[0064] The one side surface of the PET base material layer includes a middle area along the width direction, and edge areas located on both sides of the middle area;

[0065] The middle region of the PET substrate layer is provided with a POE adhesive film layer, and the edge regions of the PET substrate layer are each provided with a pressure-sensitive adhesive layer;

[0066] The POE adhesive film layer and the substrate layer are provided with a silica gel release agent, and the silica gel release agent has a size of 10-14 mm in the width direction;

[0067] The edge sealing tape corresponds to the middle region and is uniformly provided with a plurality of exhaust holes penetrating through the PET substrate layer, the silica gel release agent and the POE adhesive film layer.

[0068] The process for preparing the edge sealing tape of the photovoltaic module in the embodiment can specifically include the following steps: dividing a middle region and edge regions located on both sides of the middle region on one side surface of the PET substrate layer in the width direction; coating the silica gel release agent with a size of 10-14 mm in the width direction on the middle region of the PET substrate layer, and then bonding the POE adhesive film layer on the PET substrate layer coated with the silica gel release agent through a low-temperature process; coating the edge regions of the PET substrate layer with the pressure-sensitive adhesive layer, and finally perforating the middle region of the edge sealing tape to form a plurality of exhaust holes uniformly penetrating through the PET substrate layer, the silica gel release agent and the POE adhesive film layer.

[0069] In use, the edge sealing tape is pre-fixedly connected to the laminated body through the pressure-sensitive adhesive layer, the POE adhesive film layer covers all the side edges of the laminated body, and the two ends of the POE adhesive film layer extend to the front surface and the back surface of the laminated body, respectively. During the lamination process of the laminated body, the POE adhesive film layer is bonded on the glass surface. After the lamination process, the PET substrate layer and the pressure-sensitive adhesive layer in the edge sealing tape need to be torn off. Since the POE adhesive film layer is provided with the silica gel release agent between the PET substrate layer, the POE adhesive film layer will not be torn off together with the edge sealing tape, and a C-shaped edge covering is formed on the four edges of the module, thereby achieving the water blocking effect.

[0070] A laminated body provided in the embodiment of the utility model is introduced below, and the laminated body described below can be correspondingly referred to the edge sealing tape of the photovoltaic module described above.

[0071] Please refer to Figure 5 , Figure 5 The structure schematic diagram of the laminated body provided in the embodiment of the utility model can include:

[0072] The laminated body 2 and the edge sealing tape 1 of the photovoltaic module as described above;

[0073] The edge sealing tape is pre-connected to the laminated body 2 through the pre-fixed adhesive film layer 30;

[0074] The POE adhesive film layer 20 covers all the side edges of the laminated body 2.

[0075] It needs to be explained that the edge sealing tape is arranged in the embodiment, and the preparation work before the photovoltaic module laminated piece performs the laminating treatment can be realized by pre-fixing the film layer 30 and the laminated piece body 2 to be pre-fixedly connected, and the laminated piece is the structural piece pre-fixedly connected with the edge sealing tape.

[0076] Further, in order to facilitate the vacuumizing treatment when the laminated piece is laminated, the edge sealing tape region covering the side edges of the laminated piece body 2 can be uniformly provided with a plurality of exhaust holes 50.

[0077] It needs to be explained that the edge sealing tape is arranged in the embodiment, and the preparation work before the photovoltaic module laminated piece performs the laminating treatment can be realized by pre-fixing the film layer 30 and the laminated piece body 2 to be pre-fixedly connected, and the laminated piece is the structural piece pre-fixedly connected with the edge sealing tape.

[0078] The laminated piece provided by the embodiment of the utility model, including laminated piece body 2 and the edge sealing tape 1 of photovoltaic module as described above, edge sealing tape is pre-connected to laminated piece body 2 by pre-fixing film layer 30, POE film layer 20 covers all side edges of laminated piece body 2. The edge sealing tape 1 of photovoltaic module includes substrate layer 10, POE film layer 20 and pre-fixing film layer 30, one side surface of substrate layer 10 includes middle region along width direction and edge region located on both sides of middle region, POE film layer 20 is arranged in middle region of substrate layer 10, pre-fixing film layer 30 is arranged in edge region of substrate layer 10, and release layer 40 is arranged between POE film layer 20 and substrate layer 10. The utility model is arranged by one side surface of substrate layer 10 along width direction, POE film layer 20 is arranged in middle region, pre-fixing film layer 30 is arranged on both sides of middle region along width direction on the surface of substrate layer 10 where POE film layer 20 is arranged, POE film layer 20 can be used to seal photovoltaic module, to ensure the blocking effect of photovoltaic module to moisture and other impurities, pre-fixing film layer 30 is used to pre-fix the edge sealing tape and photovoltaic module when POE film layer 20 is not tightly attached to photovoltaic module, to ensure the convenience of sealing treatment of the edge sealing tape to photovoltaic module, and release layer 40 is arranged between POE film layer 20 and substrate layer 10, to facilitate the separation of POE film layer 20 and substrate layer 10 after POE film layer 20 is stably attached to photovoltaic module.

[0079] In addition, the utility model embodiment is arranged by a plurality of exhaust holes 50, and the laminated piece is laminated, and the vacuumizing treatment of the laminated piece is realized, and the internal bubble is avoided, and the adhesion of POE film layer 20 and laminated piece body 2 is improved.

[0080] The laminated photovoltaic module provided by the embodiment of the utility model is introduced below, and the laminated photovoltaic module described below can be correspondingly referred to the edge sealing tape of the photovoltaic module described above.

[0081] Please refer to Figure 6 , Figure 6 The laminated photovoltaic module provided by the embodiment of the utility model can include:

[0082] The laminated photovoltaic module body 3 and the POE film layer 20 in the edge sealing tape of the photovoltaic module described above;

[0083] The POE film layer 20 covers all the side edges of the laminated photovoltaic module body 3, and the POE film layer 20 is a film layer separated from the rest of the edge sealing tape after being laminated with the side edges of the laminated photovoltaic module body 3.

[0084] It should be noted that in the embodiment, the POE film layer 20 separated from the rest of the edge sealing tape covers all the side edges of the laminated photovoltaic module body 3, and is stably connected with the side edges of the laminated photovoltaic module body 3 after being laminated, so as to avoid the laminated photovoltaic module body 3 from being invaded by water vapor.

[0085] Further, in order to improve the stability of the connection between the POE film layer 20 and the laminated photovoltaic module body 3, the POE film layer 20 can be arranged to cover all the side edges of the laminated photovoltaic module body 3, and the upper side and the lower side of the POE film layer 20 can be extended to the front surface and the back surface of the laminated photovoltaic module body 3, so as to form a C-shaped edge covering POE film layer 21.

[0086] It should be noted that in the embodiment, the POE film layer 20 is partially extended to the front surface and the back surface of the laminated photovoltaic module body 3, so as to form a C-shaped edge covering for the laminated photovoltaic module body 3, and improve the sealing and stability of the edge sealing process of the photovoltaic module. The C-shaped edge covering POE film layer 21 in the embodiment is shown in Figure 6 .

[0087] The laminated photovoltaic module provided by the embodiment of the utility model, including laminated photovoltaic module main body 3 and POE film layer 20 in the edge sealing adhesive tape of photovoltaic module as mentioned above, POE film layer 20 covers at least all sides of laminated photovoltaic module main body 3, and POE film layer 20 is the film layer after being connected with the side of laminated photovoltaic module main body 3 and being separated from the rest structure of edge sealing adhesive tape after laminating treatment.The edge sealing adhesive tape of photovoltaic module includes substrate layer 10, POE film layer 20 and pre-fixing film layer 30, one side surface of substrate layer 10 includes middle area along the width direction and edge area on both sides of middle area, POE film layer 20 is arranged on the middle area of substrate layer 10, pre-fixing film layer 30 is arranged on the edge area of substrate layer 10, and release layer 40 is arranged between POE film layer 20 and substrate layer 10.The utility model sets up the middle area of one side surface of substrate layer 10 along the width direction, and POE film layer 20 is arranged on the middle area, and pre-fixing film layer 30 is arranged on both sides of middle area along the width direction on the surface of substrate layer 10 where POE film layer 20 is arranged, so that POE film layer 20 can be used to seal photovoltaic module, to ensure the blocking effect of photovoltaic module on water vapor and other impurities, and pre-fixing film layer 30 can be used to pre-fix the edge sealing adhesive tape and photovoltaic module when POE film layer 20 is not tightly attached to photovoltaic module, to ensure the convenience of sealing treatment of the edge sealing adhesive tape on photovoltaic module, and release layer 40 is arranged between POE film layer 20 and substrate layer 10, to facilitate the separation of POE film layer 20 and substrate layer 10 after POE film layer 20 is stably attached to photovoltaic module.

[0088] In addition, the utility model embodiment sets up POE film layer 20 to extend to the front and back of laminated photovoltaic module main body 3, to form C-shaped structure edge covering of laminated photovoltaic module main body 3, to improve the sealing and stability of the edge processing of photovoltaic module.

[0089] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts of each embodiment can be referred to each other.

[0090] In addition, it also needs to be explained that, in this paper, the relationship such as first and second belongs to distinguish one entity or operation from another entity or operation, and does not necessarily require or imply any actual relationship or order between the entities or operations.Moreover, the term "includes", "contains" or any other variant is intended to cover non-exclusive inclusion.

[0091] The edge sealing adhesive tape, the laminated piece and the laminated photovoltaic module are described in detail above, the principle and the implementation mode of the present application are described by applying specific examples in the present article, the description of the above examples is only used for helping to understand the structure of the present application and the core idea; meanwhile, for the general technical personnel in the art, according to the idea of the present application, there will be changes in the specific implementation mode and the application range, and the above description should not be understood as the limitation of the present application.

Claims

1. A sealing tape for photovoltaic modules, characterized in that, include: Substrate layer, POE adhesive film layer and pre-fixed adhesive film layer; One side surface of the substrate layer includes a central region along the width direction, and edge regions located on both sides of the central region; The POE adhesive film layer is provided in the middle region of the substrate layer, and the pre-fixed adhesive film layer is provided in the edge region of the substrate layer. A release layer is provided between the POE film layer and the substrate layer.

2. The edge-sealing tape for photovoltaic modules according to claim 1, characterized in that, The release layer is a silicone release agent.

3. The edge-sealing tape for photovoltaic modules according to claim 2, characterized in that, The silicone release agent has a dimension of 10 mm to 14 mm along the width direction.

4. The edge-sealing tape for photovoltaic modules according to claim 1, characterized in that, The sealing tape corresponds to the middle area and has vent holes that penetrate the substrate layer, the release layer, and the POE film layer.

5. The edge-sealing tape for photovoltaic modules according to claim 4, characterized in that, The sealing tape corresponds to the middle area and has multiple vent holes evenly distributed thereon.

6. The edge-sealing tape for photovoltaic modules according to claim 1, characterized in that, The pre-fixed adhesive film layer is a pressure-sensitive adhesive layer.

7. A laminate, characterized in that, Includes the laminate body and the edge sealing tape of the photovoltaic module as described in any one of claims 1 to 6; The edge sealing tape is pre-connected to the laminate body through the pre-fixed adhesive film layer; The POE film layer covers all sides of the laminate body.

8. The laminate according to claim 7, characterized in that, The sealing tape area covering the side of the laminate body has multiple vent holes evenly distributed.

9. A laminated photovoltaic module, characterized in that, include: The POE film layer in the laminated photovoltaic module body and the edge sealing tape of the photovoltaic module as described in any one of claims 1 to 6; The POE film layer covers at least all sides of the laminated photovoltaic module body; and the POE film layer is a film layer that has been laminated and connected to the sides of the laminated photovoltaic module body, and separated from the rest of the structure of the sealing tape.

10. The laminated photovoltaic module according to claim 9, characterized in that, The POE encapsulant layer covers all sides of the laminated photovoltaic module body, and the upper and lower sides of the POE encapsulant layer extend to the front and back of the laminated photovoltaic module body respectively, forming a C-shaped edge-sealing structure of the POE encapsulant layer.

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