A low-shading photovoltaic module frame

Abstract

This utility model discloses a low-shading photovoltaic module frame, belonging to the field of photovoltaic module technology. It includes a photovoltaic module body with end frames fixed at both ends. The photovoltaic module body includes a frame body, a junction box is fixed to the bottom surface of the frame body, and a tempered glass layer is snapped onto the top surface of the inner wall of the frame body. This photovoltaic module frame protects the photovoltaic structure from all sides through side frames on both sides and end frames at both ends. The snap-fit ​​strips on the top surface of the side frames maintain the snap-fit ​​and limit the movement of the tempered glass layer on both sides. Furthermore, the frame body only uses snap-fit ​​strips on both sides to form a frame with long sides covered, effectively reducing the impact of traditional frame structures where all sides are covered. Combined with bypass diodes, it can provide normal current flow to the cells under the side frame coverage. The short sides at both ends are not covered by snap-fit ​​strips, avoiding the impact of positive and negative electrode backflow and hot spot effects on the cells, thus reducing safety hazards.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module technology, specifically to a low-shading photovoltaic module frame. Background Technology

[0002] Photovoltaic modules, also known as photovoltaic panels, are devices that absorb sunlight and convert solar radiation energy directly or indirectly into electrical energy. Compared to ordinary batteries, photovoltaic panels are more energy-efficient and environmentally friendly, and their use is becoming increasingly widespread. Photovoltaic panels, also called solar panels, have a core structure consisting of six main parts: photovoltaic cells, tempered glass, EVA film, backsheet, aluminum alloy frame, and junction box. These components work together to achieve photoelectric conversion, protection, and encapsulation functions.

[0003] Existing photovoltaic panels use photovoltaic cells as the core power generation unit, utilizing the photoelectric effect of semiconductor materials such as monocrystalline silicon, polycrystalline silicon, or thin films to convert solar energy into electrical energy. EVA film is used to bond tempered glass to the cells on both sides to prevent moisture and oxygen penetration. The outermost layer is also made of tempered glass, which maintains light transmittance while protecting the cells from impact, rain, and dust. An aluminum alloy frame is used around the perimeter of the panel to reinforce and limit its position and provide protection, facilitating transportation and installation.

[0004] The aforementioned photovoltaic module frame reinforces the perimeter of the solar cells using aluminum alloy, while also providing a lightweight overall frame structure. However, since the frame typically protrudes above the glass surface, creating a stepped structure, rainwater containing dust can easily accumulate here during rain or cleaning. After the water evaporates, residual dirt forms strips of dirt that chronically obstruct the edges of the solar cells, reducing the light absorption area. Furthermore, most frames incorporate retaining plates around the perimeter to ensure the stability of the surface glass mounting structure. This results in shading around the edges of the solar cells, further reducing the light absorption area and causing current confluence between the positive and negative electrodes, leading to hot spot effects and module damage, posing safety hazards. Therefore, we propose a low-shading photovoltaic module frame. Utility Model Content

[0005] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0006] The purpose of this invention is to provide a low-shading photovoltaic module frame to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a low-shading photovoltaic module frame, comprising a photovoltaic module body, end frames fixed at both ends of the photovoltaic module body, the photovoltaic module body including a frame body, a junction box fixed to the bottom surface of the frame body, a tempered glass layer snapped onto the top surface of the inner wall of the frame body, a bypass diode connected to the center of the top surface of the tempered glass layer, a top EVA film adhered to the bottom surface of the tempered glass layer, a battery cell adhered to the bottom surface of the top EVA film, a bottom EVA film adhered to the bottom surface of the battery cell, a backplate adhered to the bottom surface of the bottom EVA film, side frames snapped onto both sides of the tempered glass layer, a retaining strip fixed to one side of the top surface of the side frames, a buffer cavity opened inside the side frames, a buffer pad strip supported inside the buffer cavity, a buckle fixed to the bottom end of the side frames, and a limit groove opened on the inner wall of the bottom end of the buckle.

[0008] Furthermore, the junction box and bypass diode are electrically connected to the battery cells, and side frames are engaged on both sides of the tempered glass layer.

[0009] Furthermore, the tempered glass layer has end frames that engage at both ends, and the bottom surface of the tempered glass layer is bonded and fixed to the battery cell by the top EVA film, and the tempered glass layer is evenly attached to the surface of the battery cell.

[0010] Furthermore, the buffer pads are symmetrically distributed along both sides of the inside of the buffer cavity.

[0011] Furthermore, the side frame is fastened to the four perimeters of the back panel by snaps, and the back panel is bonded and fixed to the bottom surface of the battery cell by the bottom EVA film.

[0012] Furthermore, the end frame includes an end frame, with side frames fixed at both ends of the end frame, a retaining rail provided on the inner wall of the end frame, a tempered glass layer end engaged on one side of the retaining rail, and a sloping surface at the top of the end frame.

[0013] Furthermore, the end frame is fastened to both ends of the tempered glass layer via a locking rail, and the end frame is fixedly connected to the slope surface.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The photovoltaic module frame uses side frames on both sides and end frames at both ends to engage and position the photovoltaic structure. The locking strips on the top surface of the side frames maintain the engagement and positioning of the tempered glass layer on both sides. The side frames rely on buffer chambers and rubber buffer strips inside to provide buffer protection for the frame, reducing the impact of external deformation on the internal structure. The frame body only uses the locking strips on both sides to form a long side cover, which can effectively reduce the impact of the traditional frame structure that is covered on all four sides. With the help of bypass diodes, the cells under the side frame cover can be allowed to flow normally. The short sides at both ends are not covered by locking strips, which can avoid the impact of positive and negative electrode backflow and hot spot effect of the cells, reducing safety hazards.

[0016] The side and end frames of this photovoltaic module are equipped with buffer cavities and snap-fit ​​structures. The buffer cavities provide protection and cushioning for the four sides of the photovoltaic panel, while the snap-fits use limiting grooves to fasten and limit the back panel around the perimeter, maintaining the stability of the overall structure.

[0017] This photovoltaic module frame has end frames at both ends of the short side. The inner wall of the end frame is fixed with a locking rail that can engage with the groove at the end of the tempered glass layer to keep the short side of the end stable and limited. The sloping surface of the top of the end frame is flush with the end of the tempered glass layer at one end, thus avoiding the formation of a step. When the photovoltaic panel is placed at an angle, dirt is less likely to form a trail, and the tilted structure allows it to be discharged smoothly, reducing the impact of dirt trails on the short side shading. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the main body of the photovoltaic module of this utility model;

[0019] Figure 2 This is a partial structural diagram of the side frame cross-section of this utility model;

[0020] Figure 3 This is a partial three-dimensional structural diagram of the buffer pad strip in the side frame of this utility model;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the end frame of this utility model.

[0022] In the diagram: 1. Photovoltaic module body; 101. Frame body; 102. Junction box; 103. Tempered glass layer; 104. Bypass diode; 105. Top EVA film; 106. Solar cell; 107. Bottom EVA film; 108. Back sheet; 109. Side frame; 110. Clamping strip; 111. Buffer cavity; 112. Buffer pad; 113. Buckle; 114. Limiting groove; 2. End frame; 201. End frame; 202. Clamping rail; 203. Sloping surface. Detailed Implementation

[0023] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0024] It should also be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0025] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules, or units, and are not used to limit the order of the functions performed by these devices, modules, or units or their interdependencies.

[0026] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0027] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] This utility model provides, for example Figure 1-4 The diagram shows a low-shading photovoltaic module frame, including a photovoltaic module body 1, with end frame 2 fixed to both ends of the photovoltaic module body 1. The photovoltaic module body 1 includes a frame body 101, a junction box 102 fixed to the bottom surface of the frame body 101, a tempered glass layer 103 snapped onto the top surface of the inner wall of the frame body 101, a bypass diode 104 connected to the center of the top surface of the tempered glass layer 103, a top EVA film 105 adhered to the bottom surface of the tempered glass layer 103, and a battery adhered to the bottom surface of the top EVA film 105. The bottom surface of the battery cell 106 is bonded with a bottom EVA film 107, and the bottom surface of the bottom EVA film 107 is bonded with a back plate 108. The two sides of the tempered glass layer 103 are fastened with side frames 109. A retaining strip 110 is fixed to one side of the top surface of the side frame 109. A buffer cavity 111 is opened inside the side frame 109. A buffer pad strip 112 is supported inside the buffer cavity 111. A buckle 113 is fixed to the bottom end of the side frame 109. A limiting groove 114 is opened on the inner wall of the bottom end of the buckle 113.

[0029] To provide this photovoltaic module frame in the correct way, such as Figure 1-3As shown, the photovoltaic module frame uses side frames 109 on both sides of the frame body 101 and end frames 2 at both ends to engage and position the photovoltaic structure. The snap-fit ​​strips 110 on the top surface of the side frames 109 can maintain the engagement and positioning of the tempered glass layer 103 on both sides. The side frames 109 are protected by buffer chambers 111 and rubber buffer pads 112 to reduce the impact of external deformation on the internal structure. The frame body 101 only uses snap-fit ​​strips 110 on both sides to form a long side covering of the frame, which can effectively reduce the impact of the traditional frame structure that is covered on all four sides. With the help of bypass diodes 104, the solar cells 106 under the side frames 109 can be connected normally. The short sides at both ends are not covered by snap-fit ​​strips 110, which can avoid the impact of positive and negative electrode backflow and hot spot effect of solar cells 106, and reduce safety hazards.

[0030] Both the side frame 109 and the end frame 2 are provided with a buffer cavity 111 and a buckle 113 structure. The buffer cavity 111 provides protection and buffering for the four sides of the photovoltaic panel, while the buckle 113 uses the limiting groove 114 to fasten and limit the back panel 108 around the perimeter, maintaining the stability of the overall structure.

[0031] like Figure 4 As shown, the end frame 2 includes an end frame 201, with side frames 109 fixed at both ends of the end frame 201. A retaining rail 202 is provided on the inner wall of the end frame 201, and the end of the tempered glass layer 103 is engaged on one side of the retaining rail 202. The top of the end frame 201 is a sloping surface 203.

[0032] To avoid causing contamination, such as Figure 4 As shown, the photovoltaic module frame has end frames 201 at both ends of the short side. The inner wall of the end frame 201 is fixed with a retaining rail 202, which can be engaged with the groove at the end of the tempered glass layer 103 to keep the short side of the end stable and limited. The sloping surface 203 on the top surface of the end frame 201 is flush with the end of the tempered glass layer 103 at one end, thereby avoiding the formation of a step. When the photovoltaic panel is placed at an angle, dirt is less likely to form a band, and with the tilting structure, it can be smoothly discharged, reducing the impact of dirt bands on the short side shading.

[0033] In summary, when the photovoltaic module frame is in use, the frame body 101 is formed by the end frames 201 on the short sides of the photovoltaic panel and the side frames 109 on the long sides. For the user, the frame provides reinforcement around the tempered glass layer 103, the top EVA film 105, the solar cells 106, the bottom EVA film 107, and the back panel 108. When affected by external forces, the frame can be buffered and protected by the buffer cavities 111 in the side frames 109 and the end frames 201. The rubber buffer pads 112 inside the buffer cavities 111 provide internal support and further buffering during the buffering process, forming a buffer protection process around the four sides. When the photovoltaic panel is tilted, dirt flows towards the end frames 201 on the short sides when it rains or tilts. Then, it flows out along the slope surface 203 on the top surface of the end frames 201. The tempered glass layer 103 is flush with the top surface of the end frames 201, making it difficult to trap wastewater.

[0034] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in the embodiments of this disclosure is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A low-cover photovoltaic module frame, comprising a photovoltaic module body (1), characterized in that, The photovoltaic module body (1) has end frames (2) fixed at both ends. The photovoltaic module body (1) includes a frame body (101). A junction box (102) is fixed to the bottom surface of the frame body (101). A tempered glass layer (103) is snapped onto the top surface of the inner wall of the frame body (101). A bypass diode (104) is connected to the center of the top surface of the tempered glass layer (103). A top EVA film (105) is bonded to the bottom surface of the tempered glass layer (103). A battery cell (106) is bonded to the bottom surface of the top EVA film (105). A bottom EVA film (107) is bonded to the bottom surface, and a back plate (108) is bonded to the bottom surface of the bottom EVA film (107). Side frames (109) are fastened to both sides of the tempered glass layer (103). A clip strip (110) is fixed to one side of the top surface of the side frame (109). A buffer cavity (111) is opened inside the side frame (109). A buffer pad strip (112) is supported inside the buffer cavity (111). A buckle (113) is fixed to the bottom end of the side frame (109). A limit groove (114) is opened on the inner wall of the bottom end of the buckle (113).

2. A low-profile photovoltaic module frame according to claim 1, wherein, The junction box (102) and bypass diode (104) are electrically connected to the battery cell (106), and the tempered glass layer (103) is fitted with side frame (109) on both sides.

3. A low-profile photovoltaic module frame according to claim 1, wherein, The tempered glass layer (103) has end frames (2) engaged at both ends. The bottom surface of the tempered glass layer (103) is bonded and fixed to the battery cell (106) through the top EVA film (105), and the tempered glass layer (103) is evenly attached to the surface of the battery cell (106).

4. A low-profile photovoltaic module frame according to claim 1, wherein, The buffer pads (112) are symmetrically distributed along both sides of the interior of the buffer cavity (111).

5. A low-profile photovoltaic module frame according to claim 1, wherein, The side frame (109) is fastened to the four perimeters of the back plate (108) by a buckle (113), and the back plate (108) is bonded and fixed to the bottom surface of the battery cell (106) by a bottom EVA film (107).

6. A low-shading photovoltaic module frame according to claim 1, characterized in that, The end frame (2) includes an end frame (201), with side frames (109) fixed at both ends of the end frame (201). A retaining rail (202) is provided on the inner wall of the end frame (201), and a tempered glass layer (103) end is engaged on one side of the retaining rail (202). The top of the end frame (201) is a sloping surface (203).

7. A low-profile photovoltaic module frame according to claim 6, wherein, The end frame (201) is fastened to both ends of the tempered glass layer (103) by means of a rail (202), and the end frame (201) is fixedly connected to the slope surface (203).

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