Full-screen high-double-sided-rate photovoltaic module

Abstract

The utility model discloses a full-screen high double-sided rate photovoltaic assembly, which relates to the technical field of photovoltaic assemblies, and comprises a laminated piece, the double surfaces of the laminated piece are light-transmitting, at least one pair of side edges of the laminated piece are connected with a frame body, the frame body is adhered to the edge of the bottom surface of the laminated piece to form a support, and the side edge of the laminated piece is connected with the frame body. One side edge of the frame body protrudes upwards and adheres to the side face of the laminated piece, and the height of the side edge, protruding upwards, of the frame body is smaller than the upper surface of the laminated piece. According to the full-screen, low-shielding and high-double-sided-rate photovoltaic assembly with the non-shielding frame structure, the frame of the photovoltaic assembly is optimally designed, and the conventional aluminum frame structure is changed, so that the overall mounting strength is improved on the premise that the mounting is not influenced and the overall mounting strength is ensured; and shielding to a back battery and blocking to foreign matters on the front surface of the module are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic components, and specifically relates to a full-screen high-bifaciality photovoltaic component. Background Art

[0002] With the development of the photovoltaic industry, high-efficiency bifacial cells and bifacial modules have gradually become the mainstream of the industry. The output and installation volume are increasing day by day, and manufacturers have expanded production.

[0003] For bifacial cell modules, in addition to the module power on the front side, the power generation efficiency on the back side of the module cannot be ignored. Due to the different ground environments of different power stations, there are certain differences in ground reflectivity, and the power generation gain on the back side of the module can be as high as 30%. Therefore, the shading on the back side of the module is the main factor affecting the power generation efficiency on the back side of the module, which is directly related to the overall power generation efficiency of the power station; therefore, under the condition of ensuring normal installation and safe grounding of the module, improving the power generation efficiency on the back side of the module is particularly important for improving the overall power generation efficiency of the module.

[0004] The prior art usually uses an aluminum frame with three sides, A, B, and C, as the frame of the module for the purpose of supporting and increasing the structural strength. The A side of the frame exceeds the front glass by a certain height, which will block the front battery to a certain extent. In addition, since the front frame exceeds the glass by a certain height, the dust on the front of the module is easily accumulated under the module under the wind and rain, resulting in the accumulation of foreign matter. The C side of the frame is used as the installation surface, which has a wider shielding surface and blocks the battery on the back of the module to a certain extent, which will affect the power generation efficiency of the back of the module and ultimately affect the overall power generation performance of the module. Therefore, the module frame not only affects the installation strength of the photovoltaic module, but also blocks the back and front batteries of the module, affecting the power generation efficiency of the module.

[0005] At present, the improvement of power generation efficiency of photovoltaic modules has reached a bottleneck. How to reduce the obstruction of the module frame to the front and back of the battery while ensuring the structural strength and installation strength of the photovoltaic modules has become a technical challenge in this field. Utility Model Content

[0006] The utility model aims to provide a full-screen high-bifaciality photovoltaic module, which reduces the shielding of the back battery by the frame and improves the bifaciality of the module while meeting the conditions for module installation.

[0007] To achieve the above-mentioned purpose, the utility model provides the following solution: a full-screen high-bifaciality photovoltaic module, comprising a laminate, the laminate is light-transmissive on both sides, at least one pair of sides of the laminate is connected to a frame body, the frame body is glued to the bottom edge of the laminate to form a support, and one side of the frame body protrudes upward and is glued to the side of the laminate, and the height of the side of the frame body protruding upward is below the upper surface of the laminate.

[0008] Preferably, the frame body has a first adhesive surface facing the peripheral side surfaces of the laminate and a second adhesive surface facing the bottom surface of the laminate. The first adhesive surface and the second adhesive surface are connected to form an L-shaped support mounting position, and the laminate is placed on the support mounting position and adhesively connected to the first adhesive surface and the second adhesive surface.

[0009] Preferably, a plurality of strip-shaped grooves are provided on both the first adhesive surface and the second adhesive surface along the length direction of the frame body.

[0010] Preferably, the full-screen high double-sided rate photovoltaic module further includes a plurality of mounting members arranged along the length direction of the frame body. The mounting member has a U-shaped opening groove, and the frame body and the laminate are clamped in the U-shaped opening groove.

[0011] Preferably, a mortise and tenon connection structure is provided on at least one contact surface between the frame body and the mounting member.

[0012] Preferably, the mounting member includes a top plate, a bottom plate, and a side plate vertically connected to one side of the top plate and the bottom plate. The top plate and the bottom plate are parallel, and a U-shaped opening groove for the frame body and the laminate to enter is formed between them. Mounting holes are provided on the bottom plate.

[0013] Preferably, a protruding tenon is provided on the bottom plate, and a mortise matching the tenon is provided on the bottom surface of the frame body.

[0014] Preferably, the mounting member is 12 mm - 35 mm in length and 25 mm - 40 mm in width.

[0015] Preferably, a rubber pad is clamped on the surface of the U-shaped opening groove in contact with the upper surface of the laminate.

[0016] Preferably, the surface of the rubber pad in contact with the laminate is a striped rough surface.

[0017] The present utility model discloses the following technical effects:

[0018] The present utility model aims to provide a full-screen, low-obstruction high double-sided rate photovoltaic module with an unobstructed frame structure. By optimizing the design of the frame of the photovoltaic module and changing the structure of the conventional aluminum frame, it reduces the obstruction to the back battery and the blockage of foreign objects on the front of the module without affecting the installation and ensuring the overall installation strength. Description of the Drawings

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of a partial structure of a photovoltaic module in the prior art;

[0021] Figure 2 A cross-sectional view of an aluminum frame in a photovoltaic module in the prior art;

[0022] Figure 3 A schematic diagram of photovoltaic module installation in the prior art;

[0023] Figure 4 A schematic diagram of the partial structure of a full-screen high-bifaciality photovoltaic module according to an embodiment of the utility model;

[0024] Figure 5 This is a diagram showing the position relationship between the frame body and the mounting member during assembly in the embodiment of the utility model;

[0025] Figure 6 It is a cross-sectional view of the frame body and the mounting member during assembly in the embodiment of the utility model;

[0026] Figure 7 This is a schematic diagram of the structure of the mounting member in the embodiment of the utility model;

[0027] Figure 8 This is a front view of the mounting member in the embodiment of the utility model;

[0028] Fig. 9 This is a schematic diagram of the structure of the frame body in the embodiment of the utility model;

[0029] Fig.10 This is a front view of the frame body in the embodiment of the utility model;

[0030] Among them, 1. aluminum frame; 2. silicone; 3. laminate; 31. front glass; 32. upper adhesive film; 33. battery cell; 34. lower adhesive film; 35. back glass; 4. bolts; 5. nut washers; 6. fixing support; 7. spring washers; 8. nuts; 9. rubber pads; 10. adhesive; 11. frame body; 12. mounting parts; 111. first frame plate; 112. second frame plate; 113. third frame plate; 114. fourth frame plate; 115. frame cavity; 116. mortise and tenon; 117. first adhesive surface; 118. second adhesive surface; 120. mounting hole; 121. top plate; 122. side plate; 123. bottom plate; 124. snap-in groove; 125. tenon. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] Reference Figures 1 to 3 As shown, the photovoltaic module of the prior art includes a laminate 3 and an aluminum frame 1 encapsulated around the laminate 3. The laminate 3 and the aluminum frame 1 are bonded by a silicone 2. The laminate 3 includes a front glass 31, an upper adhesive film 32, a battery cell 33, a lower adhesive film 34, and a back glass 35 stacked in sequence from top to bottom. Figure 1 As shown; wherein the aluminum frame 1 has an A side pressed on the upper surface of the laminate 3, a B side located at the side edge of the laminate 3 and a C side located below the laminator, as shown Figure 2 As shown; wherein, the C side is used for fixing, for example, installation with the photovoltaic bracket bolt 4 or pressing block installation, the A side of the aluminum frame 1 forms a shielding with a width of a on the front of the photovoltaic module, and the C side of the aluminum frame 1 forms a shielding with a width of c on the back of the photovoltaic module, affecting the power generation efficiency of the back of the module, and the B side of the aluminum frame 1 is higher than the upper surface of the photovoltaic module, forming a raised frame at the edge of the photovoltaic module, which will affect the scouring of foreign matter on the front of the module to a certain extent, resulting in the accumulation of foreign matter; the C side of the frame is mainly used for the installation of the module. The installation of photovoltaic modules in the power station is mainly in the form of bolt 4 installation and pressing block installation. When bolt 4 is selected for installation, the fixing holes on the C side are mainly used for installation. The installation diagram is shown in Figure 3 As shown, the C side of the aluminum frame 1 is placed on the fixed support 6, the fixing holes on the C side are aligned with the connecting holes on the fixed support 6, the bolts 4, nuts 8, gaskets, and spring washers 7 are inserted, and the nuts 8 are tightened to complete the installation; the above structure is prior art and will not be described in detail here.

[0034] Reference Figures 4 to 10As shown in the figure, the present utility model provides a full-screen high double-sided rate photovoltaic module. The photovoltaic module includes a laminate 3 and a frame body 11 adhesively bonded to the bottom edge of the laminate 3. The photovoltaic module can be installed with a photovoltaic support by mortise and tenon connection of an installation member 12 outside the frame body 11, or can also be directly installed through a pressing block. Specifically, the laminate 3 has a double-sided light-transmitting structure, which includes a first light-transmitting plate, a first adhesive film layer, a battery layer, a second adhesive film layer, and a second light-transmitting plate stacked in sequence from top to bottom. The frame body 11 forms a support for the laminate 3 from the bottom edge and the surrounding of the laminate 3, and at least two groups of installation members 12 are arranged along the opposite sides of the laminate 3. The frame body 11 has a first adhesive surface 117 facing the peripheral side of the laminate 3 and a second adhesive surface 118 facing the bottom surface of the laminate 3. The first adhesive surface 117 and the second adhesive surface 118 are connected to form an L-shaped support and installation position. The laminate 3 is placed on this support and installation position, and the adhesive connection is completed through an adhesive 10.

[0035] The above structure aims to propose a full-screen high double-sided rate photovoltaic module with no backside occlusion. In order to redesign the frame structure without affecting the installation, the design of the installation areas on the A side and C side of the frame is cancelled. Canceling the design of the A side is to enable the module to achieve a full screen, and there is no frame occlusion on the front of the module. Foreign objects on the front of the module will be easily washed clean under the blowing of the wind and the scouring of rainwater, and will not accumulate on the module due to the blockage of the frame. Canceling the installation area on the C side is to reduce the occlusion of the C side of the frame on the backside battery of the module and give full play to the power generation capacity of the backside of the module.

[0036] As an optional installation method, the installation member 12 has a U-shaped opening groove, and the frame body 11 and the laminate 3 are pressed in the U-shaped opening groove, and a mortise and tenon connection structure is provided on at least one contact surface between the frame body 11 and the installation member 12, specifically as Figure 4 shown.

[0037] In some embodiments, the frame body 11 is adhesively connected to the periphery of the laminate 3.

[0038] In some other embodiments, the frame body 11 is adhesively connected to two opposite sides of the laminate 3, and preferably, the frame body 11 is adhesively connected to the two long sides of the laminate 3.

[0039] In some embodiments, two installation members 12 are respectively connected to the two long frame edges of the laminate 3 by mortise and tenon, and the installation members 12 on both sides correspond to each other one by one.

[0040] In some other embodiments, two installation members 12 are respectively connected to the two short frame edges of the laminate 3 by mortise and tenon, and the installation members 12 on both sides correspond to each other one by one.

[0041] In some other embodiments, two mounting members 12 are respectively connected by mortise and tenon joints to the four side frames (two long side frames and two short side frames) of the laminate 3, and the mounting members 12 on both sides correspond to each other one by one.

[0042] The positional relationship between the side frame body 11 and the mounting member 12 is as Figure 5 and Figure 6 shown. The mounting member 12 has a bottom plate 123 with a size similar to that of the 1C side of a conventional aluminum side frame. Mounting holes 120 for fastening installation are formed in the bottom plate 123. The length of the mounting member 12 (along the length direction of the side frame body 11) is only 2 to 3 times the diameter of the mounting hole 120, greatly reducing the occlusion of the C side of the side frame on the back of the photovoltaic module.

[0043] In this embodiment, as Figure 7 and Figure 8 shown, the mounting member 12 includes a top plate 121, a bottom plate 123, and side plates 122 vertically connected to one side of the top plate 121 and the bottom plate 123. The top plate 121 and the bottom plate 123 are arranged in parallel, forming a C-shaped opening groove for accommodating the side frame body 11 and the laminate 3. The side plates 122 are respectively perpendicular to the top plate 121 and the bottom plate 123. In use, the bottom plate 123 is used for fixed assembly with a support such as a photovoltaic bracket. Therefore, mounting holes 120 for assembly are formed in the bottom plate 123. The top plate 121 clamps the upper surface of the laminate 3. A rubber pad 9 is arranged at the position where the lower surface of the top plate 121 contacts the laminate 3, ensuring the buffering between the mounting member 12 and the glass surface of the laminate 3 and reducing the risk of the mounting member 12 crushing the laminate 3. The side frame body 11 is supported and clamped above the bottom plate 123, and is in surface contact with the bottom plate 123 and the side plates 122. Therefore, a tenon 125 that is in concave-convex fit with the side frame body 11 is arranged on the bottom plate 123.

[0044] The mounting member 12 with the above structure can achieve stable clamping of the side frame body 11 and the laminate 3, and is detachably connected without using an adhesive. It can be assembled not only when the photovoltaic module leaves the factory, but also at the installation site of the photovoltaic power station, facilitating the packaging and transportation of the photovoltaic module. At the same time, fine adjustment of the clamping position can also be achieved. Since the mounting member 12 and the side frame body 11 are connected by mortise and tenon joints, the position of the mounting member 12 can be adjusted by applying a thrust along the mortise and tenon direction, facilitating its installation with the photovoltaic bracket.

[0045] The mounting member 12 with the above structure is only configured in areas with bolt 4 installation requirements and specific installation positions, and has limited occlusion of the cells on the back of the module.

[0046] In a further optimized solution, a clamping groove 124 is formed in the bottom surface (the surface facing the bottom plate 123) of the top plate 121, and the rubber pad 9 is pre-clamped and fixed in the clamping groove 124.

[0047] As a further optimization scheme, the side of the rubber pad 9 in contact with the laminate 3 is set as a rough surface with a strip texture to increase friction and improve the stability of clamping.

[0048] According to a further optimization scheme, the length of the mounting member 12 is between 12 mm and 35 mm, and the width (i.e., the width of the bottom plate 123) is between 25 mm and 40 mm. A mounting hole 120 or a pressure block mounting position must be provided on the bottom plate 123, so it must have a certain width.

[0049] According to a further optimized solution, the mounting member 12 is made of aluminum alloy or stainless steel.

[0050] According to a further optimized solution, the mounting member 12 is integrally formed.

[0051] In this embodiment, if Fig. 9 and Fig.10 As shown, the frame body 11 includes a first frame plate 111, a second frame plate 112, a third frame plate 113 and a fourth frame plate 114. The four frame plates are spliced ​​into a square tube structure, with a frame cavity 115 in the middle, and a tenon groove 116 matching the tenon 125 is provided below the frame cavity 115. Specifically, the middle part of the fourth frame plate 114 located at the bottom is recessed into the frame cavity 115 to form a tenon groove 116 matching the shape of the tenon 125; the third frame plate 113 The upper surface is used to connect the laminate 3, and a second adhesive surface 118 is provided on it; the first frame plate 111 is higher than the third frame plate 113 by a certain distance, and the height of the higher part is less than or equal to the thickness of the laminate 3, forming a first adhesive surface 117 in contact with the peripheral side of the laminate 3; the first adhesive surface 117 and the second adhesive surface 118 are connected to form an L-shaped support mounting position, and a clamping opening for clamping the laminate 3 is formed between the second adhesive surface 118 and the rubber pad 9.

[0052] As a further optimization scheme, a plurality of strip grooves along the length direction of the frame body 11 are provided on the first adhesive surface 117 and the second adhesive surface 118 to increase the contact area with the adhesive 10 and improve the bonding effect.

[0053] According to a further optimization scheme, the width of the frame body 11 is between 10 mm and 30 mm.

[0054] According to a further optimization scheme, the frame body 11 is made of aluminum alloy.

[0055] According to a further optimized solution, the frame body 11 is integrally formed.

[0056] It should be understood that, in actual applications, the mortise and tenon positions of the mounting member 12 and the frame body 11 can be freely adjusted according to the positions of the connecting holes for installing the photovoltaic bracket.

[0057] The utility model embodiment discloses the following beneficial effects:

[0058] 1. The module uses a frame structure without A side, which reduces the obstruction of the frame A side to foreign objects on the front of the module, realizes the full screen of the module, and foreign objects on the module can be easily washed away by wind and rain, improving the overall power generation performance of the module;

[0059] 2. The C side of the frame of the module does not block the back cells, ensuring the bifacial rate of the bifacial module and improving the overall power generation performance of the module;

[0060] 3. The frame and the mounting member 12 are designed to be separated. The mounting member 12 makes up for the lack of bonding strength between the laminate 3 and the frame without A side, and ensures that the assembly installation method is not affected;

[0061] 4. The utility model's full-screen high-bifaciality photovoltaic module does not affect normal production and product packaging.

[0062] The parts not described in detail in the present invention are all conventional technical means known to those skilled in the art.

[0063] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to 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.

[0064] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A full-screen high-bifaciality photovoltaic module, comprising a laminate (3), wherein the laminate (3) is light-transmissive on both sides, and is characterized in that: At least a pair of side edges of the laminate (3) are connected to a frame body (11). The frame body (11) is adhesively bonded to the bottom edge of the laminate (3) to form a support. One side edge of the frame body (11) protrudes upward and is adhesively bonded to the side surface of the laminate (3). The height of the upward-protruding side edge of the frame body (11) is below the upper surface of the laminate (3).

2. The full-screen high-bifaciality photovoltaic module according to claim 1, characterized in that: The frame body (11) has a first adhesive surface (117) facing the peripheral side surfaces of the laminate (3) and a second adhesive surface (118) facing the bottom surface of the laminate (3). The first adhesive surface (117) and the second adhesive surface (118) are joined to form an L-shaped support and installation position. The laminate (3) is placed on the support and installation position and adhesively connected to the first adhesive surface (117) and the second adhesive surface (118).

3. The full-screen high-bifaciality photovoltaic module according to claim 2, characterized in that: A plurality of strip-shaped grooves are provided on both the first adhesive surface (117) and the second adhesive surface (118) along the length direction of the frame body (11).

4. The full-screen high-bifaciality photovoltaic module according to claim 1, 2 or 3, characterized in that: It further includes a plurality of mounting members (12) arranged along the length direction of the frame body (11). The mounting member (12) has a U-shaped opening groove, and the frame body (11) and the laminate (3) are clamped in the U-shaped opening groove.

5. The full-screen high-bifaciality photovoltaic module according to claim 4, characterized in that: A mortise and tenon connection structure is provided on at least one contact surface between the frame body (11) and the mounting member (12).

6. The full-screen high-bifaciality photovoltaic module according to claim 5, characterized in that: The mounting member (12) includes a top plate (121), a bottom plate (123), and a side plate (122) vertically connected to one side of the top plate (121) and the bottom plate (123). The top plate (121) and the bottom plate (123) are parallel, and a U-shaped opening groove for the frame body (11) and the laminate (3) to enter is formed between them. An installation hole (120) is opened on the bottom plate (123).

7. The full-screen high-bifaciality photovoltaic module according to claim 6, characterized in that: A protruding tenon (125) is provided on the bottom plate (123), and a mortise (116) matching the tenon (125) is provided on the bottom surface of the frame body (11).

8. The full-screen high-bifaciality photovoltaic module according to claim 4, characterized in that: The mounting member (12) is 12 mm - 35 mm in length and 25 mm - 40 mm in width.

9. The full-screen high-bifaciality photovoltaic module according to claim 4, characterized in that: A rubber pad (9) is clamped on the surface of the U-shaped opening groove in contact with the upper surface of the laminate (3).

10. The full-screen high-bifaciality photovoltaic module according to claim 9, characterized in that: The surface of the rubber pad (9) in contact with the laminate (3) is a striped rough surface.

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