Photovoltaic module and photovoltaic system

Abstract

The embodiment of the present application provides a photovoltaic module and a photovoltaic system. The photovoltaic module includes: a laminate, the laminate has two opposite first edges, each first edge is installed with a frame; a first card slot is provided on the frame, the first edge of the laminate is installed in the first card slot, and a colloid is provided between the area of ​​the backlight surface of the laminate close to the first edge and the first card slot; wherein, the bonding area formed by the backlight surface of the laminate and the first card slot through the colloid is the first area, the total area of ​​the backlight surface of the laminate is the second area, and the ratio of the first area to the second area is greater than or equal to 3.5%. By only providing a frame on the two first edges, the photovoltaic module can greatly reduce the frame material cost and weight in the photovoltaic module, which is beneficial to the transportation and installation of the photovoltaic module, and is also beneficial to improving the dust accumulation phenomenon of the photovoltaic module and improving the power generation efficiency of the photovoltaic module.

Description

Technical Field

[0001] The present application belongs to the technical field of photovoltaic products, and specifically relates to a photovoltaic module and a photovoltaic system. Background Art

[0002] Photovoltaic modules usually include a laminate and a frame installed around the laminate. The frame is used to improve the overall strength of the laminate and protect the edge of the laminate. The frame of the photovoltaic module usually consists of two long frames and two short frames, wherein the long frame is connected to the long edge of the laminate and the short frame is connected to the short edge of the laminate. A colloid layer is provided between the long frame, the short frame and the laminate, and the colloid layer can achieve adhesion between the laminate and the frame.

[0003] However, the existing four-frame photovoltaic modules not only have high material costs and heavy weight, which is not conducive to the transportation and installation of the photovoltaic modules, but also easily form dust accumulation on the photovoltaic modules, affecting the power generation efficiency of the photovoltaic modules. Utility Model Content

[0004] The present application aims to provide a photovoltaic module and a photovoltaic system to solve the problems of the existing photovoltaic modules having a long overall frame length and high material cost.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, the present application discloses a photovoltaic module, the photovoltaic module comprising:

[0007] A laminate, the laminate having two opposite first edges, each of the first edges being provided with a frame;

[0008] The frame is provided with a first slot, the first edge of the laminate is installed in the first slot, and a colloid is provided between the area of ​​the backlight surface of the laminate close to the first edge and the first slot; wherein,

[0009] The bonding area between the backlight surface of the laminate and the first card slot formed by the colloid is a first area, the total area of ​​the backlight surface of the laminate is a second area, and the first area is equal to the first card slot.

[0010] The ratio of the second area is greater than or equal to 3.5%.

[0011] In the embodiment of the present application, since the ratio of the first area to the second area is greater than or equal to 3.5%, the bonding between the backlight surface of the laminate and the first slot of the frame is relatively stable and reliable. Reliable support for the laminate can be achieved by connecting a frame to each of the two first edges of the laminate, without the need to connect frames to all four edges of the laminate. In this way, the cost and weight of the frame materials in the photovoltaic module can be greatly reduced, which is beneficial to the transportation and installation of the photovoltaic module. Moreover, since the other two edges of the laminate are not provided with frames, dust and other impurities on the laminate can be discharged from the edges without frames, which greatly improves the dust accumulation of the photovoltaic module and improves the power generation efficiency of the photovoltaic module.

[0012] Optionally, the laminate further comprises two opposite second edges, the first edge extends in a first direction, the second edge extends in a second direction, and the first direction is perpendicular to the second direction;

[0013] The frame clamps the entire first edge along the first direction, so that the colloid in the first clamping groove of the frame can fully contact the laminate, thereby improving the support reliability of the frame for the entire laminate.

[0014] Optionally, the first card slot includes a side wall arranged opposite to the side of the laminate, and a bottom wall and a top wall respectively arranged on both sides of the side wall, the bottom wall is provided with a glue injection pool, the glue injection pool is filled with the colloid, the top wall is pressed against the light-receiving surface of the laminate, and the backlight surface of the laminate is connected to the bottom wall through the colloid. In this way, the first card slot can wrap the entire edge of the laminate from three sides, and the first card slot has the colloid, so that the three sides of the laminate can be bonded to the first card slot, thereby achieving the tight connection between the laminate and the first card slot.

[0015] Optionally, along the second direction, the contact width between the laminate and the bottom wall of the frame is D;

[0016] The length of the second edge is M;

[0017] The ratio of D to M is greater than or equal to 1:28, so that the effective contact area between the bottom wall of the frame and the laminate is large enough, so that the connection between the laminate and the frame is strong.

[0018] The degree can meet the photovoltaic certification test requirements.

[0019] Optionally, the distance between the bottom of the glue injection pool and the backlight surface of the laminate is greater than or equal to 1 mm. In this way, when the glue injection pool is filled with the colloid, the thickness of the colloid can be greater than or equal to 1 mm, and the colloid can produce sufficient deformation to resist external loads, improve the buffering performance between the laminate and the frame, and prevent rigid extrusion damage between the laminate and the frame.

[0020] Optionally, the number of the glue injection pool on the bottom wall is at least one;

[0021] Along the second direction, at least two protrusions are arranged on the bottom wall at intervals, the protrusions extend along the first direction, and the glue injection pool is formed between the two protrusions;

[0022] The laminate is placed on the protrusion, and the protrusion is used to support the laminate;

[0023] At least one supporting point for supporting the laminate is provided on the top wall. Thus, after the laminate is bonded to the colloid, the laminate can be prevented from rotating in the first slot due to the supporting and limiting effect of at least three supporting points on the laminate, so as to improve the bonding stability between the colloid and the laminate. Moreover, defects such as wear and deformation of the colloid caused by the laminate squeezing the colloid and weakening of the buffering performance of the colloid can be avoided.

[0024] Optionally, the colloid is disposed between the protrusion and the laminate to prevent hard contact between the protrusion and the laminate, thereby preventing the laminate from being damaged due to the hard contact.

[0025] Optionally, a through hole penetrating the bottom wall is provided at the bottom of part or all of the injection pools; wherein,

[0026] For the glue injection pool provided with the through hole, when projected along the thickness direction of the photovoltaic module, the total projected area of ​​the through hole is the third area, the projected area of ​​the glue injection pool is the fourth area, and the ratio of the third area to the fourth area is less than or equal to 1:20, so as to reduce the influence of the through hole on the strength of the bottom wall, ensure the overall strength of the frame, and realize reliable support of the frame for the laminate;

[0027] And / or, for the glue injection pool provided with the through hole, the width of the glue injection pool along the second direction is C, the through hole is a circular through hole, the diameter of the circular through hole is d, and the ratio of d to C is less than or equal to 1:3, so as to avoid the bottom wall from breaking at the position of the through hole and causing the frame to fail;

[0028] And / or, there are multiple through holes, and the multiple through holes are arranged at intervals along the first direction, so as to further shorten the curing time of the colloid in the glue injection pool.

[0029] In a second aspect, an embodiment of the present application further provides a photovoltaic system, the photovoltaic system comprising: a roof or a photovoltaic bracket, and any of the photovoltaic components described above; wherein,

[0030] The frame of the photovoltaic module is installed on the roof or the photovoltaic bracket through fasteners.

[0031] In the embodiment of the present application, since the photovoltaic component is only provided with a frame on the two first edges of the laminate, the overall weight is relatively light, which not only facilitates the installation convenience of the photovoltaic component on the roof or the photovoltaic bracket, but also can reduce the load on the roof or the photovoltaic bracket and increase the service life of the roof or the photovoltaic bracket.

[0032] Optionally, the extension direction of the frame of the photovoltaic module is consistent with the inclination direction of the roof or the photovoltaic bracket. In this way, the two sides of the photovoltaic module without a frame are located at the upper and lower sides perpendicular to the inclination direction, which does not block the water flow, making it convenient for rainwater to wash the surface of the photovoltaic module and prevent dust accumulation on the photovoltaic module. Moreover, the two sides of the photovoltaic module with a frame can be installed along the extension direction of the tile ribs on the roof or the photovoltaic bracket. Since the roof tile ribs extend in the inclination direction, the number of fasteners on the frame can be determined according to the environmental conditions to improve the layout flexibility of the fasteners and improve the connection stability between the photovoltaic module and the roof.

[0033] Optionally, at least N fasteners (N is a positive integer greater than 1) are provided on each of the frames, and the spacing between two adjacent fasteners is F, and F is less than 930 mm, so as to improve the connection stability between the fasteners and the photovoltaic components and the roof or photovoltaic bracket.

[0034] Optionally, the length of the frame is L, and at least N fasteners are arranged on each frame. The distance between the fasteners at the end of the frame and the end of the frame is [L-F(N-1)] / 2, so that each fastener can evenly share the negative pressure borne by the photovoltaic module. In this way, the overall force of the photovoltaic module can be evenly applied, and the problem of local stress concentration can be prevented, thereby increasing the service life of the photovoltaic module.

[0035] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0037] Figure 1 is a schematic structural diagram of a photovoltaic assembly described in an embodiment of the present application;

[0038] Figure 2 yes Figure 1 The schematic diagram of the exploded structure of the photovoltaic module shown;

[0039] Figure 3 yes Figure 1 A partial enlarged schematic diagram of the long frame of the photovoltaic module shown;

[0040] Figure 4 yes Figure 3 The schematic cross-sectional structure diagram of the photovoltaic module shown in the A-A direction;

[0041] Figure 5 yes Figure 1 One of the schematic diagrams of the installation of photovoltaic modules shown;

[0042] Figure 6 yes Figure 1 The second schematic diagram of the installation of photovoltaic modules shown;

[0043] Figure 7 It is one of the structural schematic diagrams of a photovoltaic system described in an embodiment of the present application;

[0044] Figure 8 This is the second structural schematic diagram of a photovoltaic system described in an embodiment of the present application.

[0045] Figure numerals: 10 - laminate, 101 - first edge, 102 - second edge, 11 - frame, 110 - first slot, 111 - bottom wall, 112 - side wall, 113 - top wall, 114 - glue injection pool, 115 - glue overflow groove, 116 - through hole, 12 - colloid, 20 - roof, 21 - fastener, x - second direction, y - first direction, B - support point. DETAILED DESCRIPTION

[0046] The embodiments of the utility model will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0047] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this utility model, unless otherwise specified, "multiple" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0048] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0049] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] Reference Figure 1 , showing a schematic diagram of the structure of a photovoltaic module according to an embodiment of the present application, referring to Figure 2 , showing Figure 1 The schematic diagram of the exploded structure of the photovoltaic module shown in Figure 3 , showing Figure 1 The enlarged schematic diagram of the long frame of the photovoltaic module shown in FIG. Figure 4 , showing Figure 3 The schematic diagram of the cross-sectional structure of the photovoltaic module along the AA direction shown in FIG. Figure 5 , showing Figure 1 One of the schematic diagrams of photovoltaic module installation shown in Figure 1 is shown in Figure 1. Figure 6 , showing Figure 1 The second schematic diagram of the installation of photovoltaic panels is shown.

[0051] like Figures 1 to 6As shown, the photovoltaic module may specifically include: a laminate 10, the laminate 10 having two opposite first edges 101, each first edge 101 being provided with a frame 11; the frame 11 being provided with a first slot 110, the first edge 101 of the laminate 10 being installed in the first slot 110, and a colloid 12 ( Figure 3 wherein the bonding area between the backlight surface of the laminate 10 and the first card slot 110 formed by the colloid 12 is a first area, the total area of ​​the backlight surface of the laminate 10 is a second area, and the ratio of the first area to the second area is greater than or equal to 3.5%.

[0052] Specifically, the laminate 10 has a light-receiving surface and a light-repelling surface that are disposed in opposite directions.

[0053] The light-receiving side is the side that receives sunlight, and the backlight side is the side that faces away from the sun and does not receive sunlight.

[0054] In the embodiment of the present application, since the ratio of the first area to the second area is greater than or equal to 3.5%, the bonding between the backlight surface of the laminate 10 and the first slot 110 of the frame 11 is relatively stable and reliable. Reliable support for the laminate 10 can be achieved by connecting a frame 11 to each of the two first edges 101 of the laminate 10, without the need to connect frames to all four edges of the laminate 10. In this way, the cost and weight of the frame materials in the photovoltaic module can be greatly reduced, which is beneficial to the transportation and installation of the photovoltaic module. Moreover, since the other two edges of the laminate 10 do not need to be provided with frames, dust and other impurities on the laminate 10 can be discharged from the edges without frames, which greatly improves the dust accumulation of the photovoltaic module and improves the power generation efficiency of the photovoltaic module.

[0055] Experimental data show that when the ratio of the first area to the second area is greater than or equal to 3.5%, the bonding between the backlight surface of the laminate 10 and the frame 11 is relatively stable and reliable, and can meet the photovoltaic certification test requirements. For example, the ratio of the first area to the second area may include but is not limited to any one of 3.5%, 4.2%, 4.5%, 5%, 5.5%, 6% and 6.7%, and the embodiments of the present application are not limited to this.

[0056] like Figure 2As shown, the laminate 10 also includes two opposite second edges 102, the extension direction of the first edge 101 is the first direction x, the extension direction of the second edge 102 is the second direction y, and the first direction x is perpendicular to the second direction y; the frame 11 clamps the entire first edge 101 along the first direction x, so that the colloid 20 in the first card groove 110 of the frame 11 can fully contact the laminate 10, so as to improve the support reliability of the frame 11 for the entire laminate 10.

[0057] In a specific application, the laminate 10 may be a rectangular laminate, the edge of the long side of the laminate 10 may be a long edge, and the edge of the short side may be a short edge. The first edge 101 may be a long edge or a short edge, that is, the frame 11 may be clamped at the long edge or the short edge, which is not limited in the embodiment of the present application.

[0058] In an optional embodiment of the present application, in order to increase the effective bonding area between the frame 11 and the laminate, the frame 11 can be clamped on the long edge of the laminate 10, that is, the first edge 101 can be the long edge of the laminate 10. Accordingly, the first direction x can be the length direction of the laminate 10, and the second direction y can be the width direction of the laminate 10.

[0059] like Figure 3 As shown, the first card slot 110 may include a side wall 112 arranged opposite to the side of the laminate 10, and a bottom wall 111 and a top wall 113 respectively arranged on both sides of the side wall 112, a glue injection pool 114 is arranged on the bottom wall 111, and the glue injection pool 114 is filled with a colloid 12, and the top wall 113 is pressed on the light-receiving surface of the laminate 10, and the backlight surface of the laminate 10 is connected to the bottom wall 111 through the colloid 12. In this way, the first card slot 110 can wrap the entire edge of the laminate 10 from three sides, and the first card slot 110 has the colloid 12, so that the three sides of the laminate 10 can be bonded to the first card slot 110, thereby achieving the tight connection between the laminate 10 and the first card slot 110.

[0060] like Figure 3 As shown, the bottom wall 111, the side wall 112 and the top wall 113 can enclose and form a first slot 110 having an opening, and the first edge 101 of the laminate 10 can be pressed into the first slot 110 through the opening. Figure 5 As shown, during the assembly process of the photovoltaic module, the colloid 12 can be first injected into the glue injection pool 114. The colloid 12 can be a structural glue or silicone with a bonding strength greater than or equal to 1Mpa. The height of the colloid 12 can be slightly higher than the depth of the glue injection pool 114. Then, the first edge 101 of the laminate 10 is pressed into the first slot 110 of the frame 11. As the laminate 10 is pressed in, as shown in FIG. Figure 6As shown, the colloid 12 in the glue injection pool 114 can overflow into the overflow groove 115 and fill the overflow groove 115. Since the bonding area between the colloid 12 and the laminate 10 is large, the connection between the laminate 10 and the frame 11 is also relatively stable. In this way, only the frame 11 is provided on the first edge 101 of the laminate 10 to achieve reliable support for the laminate 10, avoiding the design of using frames on all edges of the laminate 10, thereby reducing the use of frame materials and improving the dust accumulation of photovoltaic modules.

[0061] In a specific application, the glue injection pool 114 can be formed by a groove on the bottom wall 111, or at least two protrusions spaced along the second direction y can be set on the bottom wall 111, and the glue injection pool is formed between the two protrusions. The embodiment of the present application does not limit the formation method of the glue injection pool 114.

[0062] Alternatively, if Figure 3 As shown, along the second direction y, the contact width between the laminate 10 and the bottom wall 111 of the frame 11 is D, that is, the contact width between the laminate and the frame at two opposite edges. Figure 2 As shown, the length of the second edge 101 is M, and the ratio of D to M is greater than or equal to 1:28, so that the effective contact area between the bottom wall 111 of the frame 11 and the laminate 10 is large enough, so that the connection strength between the laminate 10 and the frame 11 can meet the photovoltaic certification test requirements. The photovoltaic certification may include but is not limited to the photovoltaic certification of the International Electrotechnical Commission (ICE).

[0063] For example, the ratio of the D to the M may include but is not limited to any one of 1:28, 1:22, 1:15, 1:12, 1:10, 1:8 and 1:5. The embodiment of the present application does not specifically limit the ratio of the D to the M.

[0064] Optionally, the distance between the bottom of the glue injection pool 114 and the backlight surface of the laminate 10 is greater than or equal to 1 mm. In this way, when the glue injection pool 114 is filled with the colloid 12, the thickness of the colloid 12 can be correspondingly greater than or equal to 1 mm. In practical applications, the thicker the thickness of the colloid 12 is, the more the colloid 12 needs to be deformed to a certain extent to buffer when the frame 11 and / or the laminate 10 is subjected to external loads and the colloid 12 is torn. In the embodiment of the present application, since the thickness of the colloid 12 in the glue injection pool 114 can be greater than or equal to 1 mm, the colloid 12 can produce enough deformation to resist external loads, improve the buffering performance between the laminate 10 and the frame 11, and prevent rigid extrusion damage between the laminate 10 and the frame 11.

[0065] For example, the distance between the bottom of the glue injection pool 114 and the backlight surface of the laminate 10 can be 1 mm, 1.6 mm, 2 mm, 3 mm, 5 mm or 6 mm, etc., which is not specifically limited in the embodiments of the present application.

[0066] Optionally, there is at least one glue injection pool 114 on the bottom wall 111, and at least two protrusions are arranged on the bottom wall 111 at intervals along the second direction y, and the protrusions extend along the first direction x, and the glue injection pool 114 is formed between the two protrusions; the laminate 10 is placed on the protrusions, and the protrusions are used to support the laminate 10; and at least one supporting point B for supporting the laminate 10 is provided on the top wall 113.

[0067] like Figure 3 As shown, the protrusions on both sides of the glue injection pool 114 on the bottom wall 111 can serve as support points B for supporting the laminate 10, that is, at least two support points B are provided on the bottom wall 111, and at least one support point B is provided on the top wall 113. In this way, after the laminate 10 is bonded and connected with the colloid 12, the laminate 10 can be prevented from rotating in the first slot 110 due to the support and limiting effect of at least three support points B on the laminate 10, so as to improve the bonding stability between the colloid 12 and the laminate 10. Moreover, defects such as wear and deformation of the colloid 12 caused by the laminate 10 squeezing the colloid 12 and weakening of the buffering performance of the colloid 12 can also be avoided.

[0068] Optionally, when there is only one glue injection pool 114, the support point B on the bottom wall 111 is formed at both ends of the glue injection pool 114 along the first second direction y; when there are multiple glue injection pools 114 and the multiple glue injection pools 114 are arranged in sequence along the second direction y, the support point B on the bottom wall 111 is formed at one end or both ends of any glue injection pool 114 along the second direction y.

[0069] Two fewer supporting points B are provided to prevent the laminate 10 from rotating on the bottom wall 111 through the supporting limit positions of the supporting points B on the bottom wall 111, so as to further improve the connection reliability between the backlight surface of the laminate 10 and the bottom wall 111.

[0070] Optionally, a colloid 12 is disposed between the protrusion and the laminate 10 to prevent hard contact between the protrusion and the laminate 10, thereby preventing the laminate 10 from being damaged due to the hard contact.

[0071] In some optional embodiments of the present application, the bottom of part or all of the glue injection pool 114 is provided with a through hole 116 that penetrates the bottom wall 111. The provision of the through hole 116 allows the colloid 12 in the glue injection pool 114 to communicate with the outside air, thereby achieving a breathable effect. In practical applications, since the width of the glue injection pool 114 is too wide, the time required for the colloid 12 in the glue injection pool 114 to solidify is relatively long. By providing the through hole 116 at the bottom of the glue injection pool 114, the reaction area between the colloid 12 in the glue injection pool 114 and the air can be increased, the solidification time of the colloid 12 can be shortened, and the production efficiency of the photovoltaic module can be improved.

[0072] Optionally, for the glue injection pool 114 provided with a through hole 116, the total projection area of ​​the through hole 116 is projected along the thickness direction of the photovoltaic module, and the projection area of ​​the glue injection pool 114 is the fourth area. The ratio of the third area to the fourth area is less than or equal to 1:20, so as to reduce the influence of the setting of the through hole 116 on the strength of the bottom wall 111, ensure the overall strength of the frame 11, and realize reliable support of the frame 11 for the laminate 10.

[0073] For example, the areas of the through holes 116 can be the same or different, and the number of through holes 116 can also be set according to actual needs. It only requires that the ratio of the third area of ​​the through hole 116 to the fourth area is less than or equal to 1:20. The present application does not limit the number of through holes 116 and the area of ​​a single through hole 116.

[0074] For example, the ratio of the third area to the fourth area may be 1:21, 1:22, 1:25, 1:26 or 1:28, etc. The embodiment of the present application does not specifically limit the ratio of the third area to the fourth area.

[0075] Optionally, for the glue injection pool 114 provided with a through hole 116, the width of the glue injection pool 114 along the second direction y is C, the through hole 116 is a circular through hole, the diameter of the circular through hole is d, and the ratio of d to C is less than or equal to 1:3, so as to avoid the bottom wall 111 from breaking at the position of the through hole 116 and causing failure of the frame 11.

[0076] For example, the ratio of d to C may be 1:4, 1:5, 1:7, 1:8 or 1:10, etc.

[0077] The embodiment of the present application may not limit the ratio of d to C.

[0078] Optionally, for the glue injection pool 114 provided with the through hole 116, the through hole 116 is provided in the middle area of ​​the glue injection pool 114 along the second direction y. Since the heat dissipation of the colloid 12 in the middle area is poor and the curing time is long, by providing the through hole 116 in the middle area, the ventilation and heat dissipation of the colloid 12 in the middle area of ​​the glue injection pool 114 can be achieved, and the overall curing time of the colloid 12 can be shortened.

[0079] like Figure 4 As shown, there are multiple through holes 116 , which are spaced apart along the first direction x. Since the colloid 12 in the injection pool 114 can be evenly ventilated through the multiple through holes 116 , the curing time of the colloid 12 in the injection pool 114 can be further shortened.

[0080] It should be noted that Figure 4 Only the case where the plurality of through holes 116 are arranged at intervals along the first direction x is shown. In practical applications, the plurality of through holes 116 may also be arranged at intervals along the second direction y or at any position as required, and the positions of the through holes 116 are not specifically limited in the embodiment of the present application.

[0081] like Figure 3 As shown, the side wall 112 and the top wall 113 of the first slot 110 may also be provided with an overflowing glue groove 115, that is, there is a gap between the inner surface of the side wall 112, the inner surface of the top wall 113 and the laminate 10, so as to facilitate the flow of the glue 12. And an acute angle may be formed between the inner surface of the side wall 112 and the inner surface of the top wall 113, so as to facilitate the overflow of the glue 12 from the side wall portion of the overflowing glue groove 115 to the top wall portion of the overflowing glue groove 115.

[0082] In summary, the photovoltaic assembly described in the embodiments of the present application may at least include the following advantages:

[0083] In the embodiment of the present application, since the ratio of the first area to the second area is greater than or equal to 3.5%, the bonding between the backlight surface of the laminate and the first card slot of the frame is relatively stable and reliable. Reliable support for the laminate can be achieved by only connecting a frame to each of the two first edges of the laminate, and there is no need to design a frame connected to all four edges of the laminate. In this way, the cost and weight of the frame material in the photovoltaic module can be greatly reduced, which is beneficial to the transportation and installation of the photovoltaic module. Moreover, since the other two edges of the laminate do not need to be provided with frames, dust and other impurities on the laminate can be discharged from the edges without frames, which greatly improves the dust accumulation of the photovoltaic module and improves the power generation efficiency of the photovoltaic module.

[0084] The present application also provides a photovoltaic system, such as Figure 7 and Figure 8As shown, the photovoltaic system may specifically include: a roof 20 or a photovoltaic bracket, any of the photovoltaic components described above; wherein the photovoltaic

[0085] The frame 11 of the photovoltaic module is installed on the roof 20 or the photovoltaic bracket through the fastener 21. Since the photovoltaic module is only provided with the frame 11 on the two first edges of the laminate 10, the overall weight is light, which is not only conducive to the installation convenience of the photovoltaic module on the roof 20 or the photovoltaic bracket, but also can reduce the load of the roof 20 or the photovoltaic bracket, and improve the service life of the roof 20 or the photovoltaic bracket.

[0086] Optionally, the extension direction of the frame 11 of the photovoltaic module is consistent with the inclination direction of the roof 20 or the photovoltaic bracket. For example, the extension direction of the frame 11, the inclination direction of the roof 20 or the photovoltaic bracket are all the first direction x. In this way, the two sides of the photovoltaic module without a frame are located at the upper and lower sides perpendicular to the inclination direction, which does not block the water flow, making it convenient for rainwater to wash the surface of the photovoltaic module and prevent dust accumulation on the photovoltaic module. Moreover, the two sides of the frame of the photovoltaic module with the edge 11 can be installed along the extension direction of the tile ribs on the roof 20 or the photovoltaic bracket. Since the roof tile ribs extend along the inclination direction, the number of fasteners 21 on the frame 11 can be determined according to the environmental conditions to improve the layout flexibility of the fasteners 21 and improve the connection stability between the photovoltaic module and the roof 20.

[0087] Optionally, along the extension direction of the frame 11, at least N fasteners 21 (N is a positive integer greater than 1) are provided on each frame 11, and the spacing between two adjacent fasteners 21 is less than 930 mm, so as to improve the connection stability of the fastener 21 connecting the photovoltaic module and the roof 20 or the photovoltaic bracket. In practical applications, due to different wind loads, the pulling force borne by the photovoltaic module is different. In order to ensure the stability of the installation of the photovoltaic module, the sparseness of the fasteners 21 installed on the frame 11 of the photovoltaic module is different. The greater the wind load, the smaller the spacing between adjacent fasteners 21 should be, and the smaller the wind load, the larger the spacing between adjacent fasteners 21 should be; when the wind load is greater than 2.4KPA, the distance between adjacent fasteners 21 on the frame 11 should be less than 930 mm, so that the fasteners 21 are not pulled off by negative wind pressure.

[0088] For example, the distance between two adjacent fasteners 21 may include but is not limited to any one of 930 mm, 900 mm, 850 mm or 820 mm, which is not limited in the embodiment of the present application.

[0089] Optionally, the length of the frame 11 is L, at least N fasteners 21 are provided on each frame 11, and the distance between the fastener 21 at the end of the frame 11 and the end of the frame 11 is [LF(N-1)] / 2. Specifically, according to the spacing requirements between adjacent fasteners 21 mentioned above, plus the length of the frame 11 of the photovoltaic module, it is possible to calculate how many fasteners 21 need to be installed on the frame 11. In practical applications, the installation positions of the fasteners 21 on the frame 11 can be evenly distributed so that each fastener 21 can evenly share the negative pressure borne by the photovoltaic module, so that the overall force of the photovoltaic module can be evenly applied, and the problem of local stress concentration can be prevented, so as to increase the service life of the photovoltaic module.

[0090] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0091] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A photovoltaic module, characterized in that: The photovoltaic module comprises: A laminate, the laminate having two opposite first edges, each of the first edges being provided with a frame; The frame is provided with a first slot, the first edge of the laminate is installed in the first slot, and a colloid is provided between the area of ​​the backlight surface of the laminate close to the first edge and the first slot; wherein, The bonding area between the backlight surface of the laminate and the first card slot formed by the colloid is a first area, the total area of ​​the backlight surface of the laminate is a second area, and the ratio of the first area to the second area is greater than or equal to 3.5%.

2. The photovoltaic module according to claim 1, characterized in that: The laminate further comprises two opposite second edges, the first edge extends in a first direction, the second edge extends in a second direction, and the first direction is perpendicular to the second direction; The frame clamps the entire first edge along the first direction.

3. The photovoltaic module according to claim 2, characterized in that: The first card slot includes a side wall arranged opposite to the side of the laminate, and a bottom wall and a top wall respectively arranged on both sides of the side wall, a glue injection pool is arranged on the bottom wall, and the glue injection pool is filled with the colloid, and the top wall is pressed on the light-receiving surface of the laminate.

4. The photovoltaic module according to claim 3, characterized in that: Along the second direction, the contact width between the laminate and the bottom wall of the frame is D; The length of the second edge is M; The ratio of D to M is greater than or equal to 1:

28.

5. The photovoltaic module according to claim 3, characterized in that: The distance between the bottom of the glue injection pool and the backlight surface of the laminate is greater than or equal to 1 mm.

6. The photovoltaic module according to claim 3, characterized in that: The number of the glue injection pool on the bottom wall is at least one; Along the second direction, at least two protrusions are arranged on the bottom wall at intervals, the protrusions extend along the first direction, and the glue injection pool is formed between the two protrusions; The laminate is placed on the protrusion, and the protrusion is used to support the laminate; The top wall is provided with at least one supporting point for supporting the laminate.

7. The photovoltaic module according to claim 6, characterized in that: The colloid is arranged between the protrusion and the laminate.

8. The photovoltaic module according to claim 3, characterized in that: The bottom of part or all of the injection pool is provided with a through hole penetrating the bottom wall; wherein For the glue injection pool provided with the through hole, when projected along the thickness direction of the photovoltaic module, the total projected area of ​​the through hole is the third area, the projected area of ​​the glue injection pool is the fourth area, and the ratio of the third area to the fourth area is less than or equal to 1:20; And / or, for the glue injection pool provided with the through hole, the width of the glue injection pool along the second direction is C, the through hole is a circular through hole, the diameter of the circular through hole is d, and the ratio of d to C is less than or equal to 1:3; And / or, there are multiple through holes, and the multiple through holes are arranged at intervals along the first direction.

9. The photovoltaic module according to any one of claims 1 to 8, characterized in that: The adhesive force of the colloid is greater than or equal to 1 MPa per square millimeter.

10. A photovoltaic system, characterized in that: The photovoltaic system comprises: a roof or a photovoltaic bracket, and a photovoltaic assembly according to any one of claims 1 to 9; wherein: The frame of the photovoltaic module is installed on the roof or the photovoltaic bracket through fasteners.

11. The photovoltaic system according to claim 10, characterized in that: The extending direction of the frame of the photovoltaic assembly is consistent with the inclination direction of the roof or the photovoltaic support.

12. The photovoltaic system according to claim 10, characterized in that: At least N fasteners are arranged on each of the frames, wherein N is a positive integer greater than 1, and the distance between two adjacent fasteners is F, which is less than 930 mm.

13. The photovoltaic system according to claim 12, characterized in that: The length of the frame is L, at least N fasteners are arranged on each frame, and the distance between the fastener at the end of the frame and the end of the frame is [L-F(N-1)] / 2.

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