Photovoltaic module and photovoltaic system

Abstract

The utility model discloses a photovoltaic module and a photovoltaic system, the photovoltaic module comprises a frame and a laminated member bonded on the frame, the frame comprises a first side plate, a support plate and a baffle plate, and the baffle plate and the support plate are located at the same side of the first side plate; the baffle is fixedly connected with the top end of the first side plate. The supporting plate is fixedly connected with the first side plate. The bottom wall of the laminating piece is located on the supporting plate, and the side wall of the laminating piece abuts against the end, away from the first side plate, of the baffle. The side wall of the laminating piece, the first side plate, the baffle and the supporting plate jointly define a glue overflowing main groove, the glue overflowing main groove comprises a first glue overflowing groove and a second glue overflowing groove which are sequentially arranged, and the first glue overflowing groove and the second glue overflowing groove are communicated through a glue flowing channel; the orthographic projection area of the first glue overflowing groove on the plane perpendicular to the first side plate is larger than the orthographic projection area of the second glue overflowing groove on the plane perpendicular to the first side plate. Therefore, excessive adhesive entering the first adhesive overflowing groove is prevented from overflowing to the top surface of the laminated piece, and meanwhile, the bonding reliability of the frame and the laminated piece is improved.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic technology, and in particular to a photovoltaic component and a photovoltaic system. Background Art

[0002] Driven by the dual carbon goals, the new installed capacity of distributed industrial and commercial photovoltaic industry has increased year by year, and in 2021 it has occupied half of the photovoltaic market. Distributed industrial and commercial photovoltaic modules are mostly installed in small-angle application scenarios. The dust accumulation on the frame of photovoltaic modules will cause power generation loss, hot spots, reduced module reliability, high operation and maintenance costs and many other problems to the power station system. In the related technology, although some solutions can solve the problem of dust accumulation on the frame of photovoltaic modules, there is a problem of overflow of adhesive to the upper surface of the laminate during the framing of the laminate, and poor reliability of the bonding between the frame and the laminate. Utility Model Content

[0003] The purpose of the present application is to provide a photovoltaic module and a photovoltaic system to solve the dust accumulation problem of the frame of the photovoltaic module, prevent the adhesive from overflowing to the surface of the laminate when the frame is bonded to the laminate, and improve the reliability of the bonding between the frame and the laminate.

[0004] In order to achieve the above objectives, this application provides the following technical solutions:

[0005] A photovoltaic module comprises a frame and a laminate bonded to the frame.

[0006] The frame includes a first side plate, a support plate and a baffle plate, wherein the baffle plate and the support plate are located on the same side of the first side plate, and the support plate and the baffle plate are arranged opposite to each other; the baffle plate is fixedly connected to the top end of the first side plate, and the support plate is fixedly connected to the first side plate;

[0007] The bottom wall of the laminate is located on the support plate, and the side wall of the laminate abuts against the end of the baffle away from the first side plate;

[0008] The side walls, first side plate, baffle plate and support plate of the laminate together form a total glue overflow groove, and along the direction from the top wall to the bottom wall of the laminate, the total glue overflow groove includes a first glue overflow groove and a second glue overflow groove arranged in sequence, and the first glue overflow groove and the second glue overflow groove are connected by a glue flow channel, and the orthographic projection area of ​​the first glue overflow groove on the plane perpendicular to the first side plate is larger than the orthographic projection area of ​​the second glue overflow groove on the plane perpendicular to the first side plate.

[0009] In the photovoltaic module provided by the utility model, the side wall of the laminate is against the baffle, and the edge of the top surface of the laminate is not blocked, that is, the light-facing surface of the laminate is not blocked by the frame, which can effectively prevent dust accumulation at the edge of the laminate. In addition, the baffle is used to abut against the side wall of the laminate in the utility model to achieve positioning and fixing of the laminate.

[0010] In the process of bonding the frame and the laminate, glue can be directly injected into the second glue overflow groove, and the adhesive enters the first glue overflow groove through the glue flow channel, and finally the adhesive fills the first glue overflow groove, the second glue overflow groove and the gap between the support plate and the bottom wall of the laminate. During the glue injection process, since the adhesive enters the first glue overflow groove through the glue flow channel, the glue flow channel can control the speed and amount of the adhesive flowing into the first glue overflow groove on the upper side. The glue flow channel forms a buffering and regulating effect on the adhesive entering the first glue overflow groove, which can improve the problem of excessive and too fast adhesive entering the first glue overflow groove causing the adhesive to overflow to the top surface of the laminate, and can also improve the problem of poor bonding effect caused by too little and too slow overflow; at the same time, the adhesive fills the first glue overflow groove, the second glue overflow groove and the glue flow channel, so that the bonding between the frame and the laminate is more firm, and the side gluing effect of the laminate is better.

[0011] The capacity of the first overflow glue groove is greater than that of the second overflow glue groove, and the adhesive can fill the second overflow glue groove faster. After filling the second overflow glue groove, the adhesive continues to flow into the first overflow glue groove and the gap between the bottom wall of the laminate and the support plate, which is conducive to the adhesive filling the first overflow glue groove, the second overflow glue groove, and the gap between the bottom wall of the laminate and the support plate, thereby ensuring the bonding effect between the laminate and the frame and the adhesive coating effect on the side of the laminate. In addition, the capacity of the first overflow glue groove is larger, which can prevent excessive adhesive from overflowing from the first overflow glue groove and flowing to the top surface of the laminate.

[0012] In one implementation, the width of the glue flow channel is 0.7mm-2mm along the direction perpendicular to the side wall of the laminate, so as to ensure that the amount and flow rate of the adhesive entering the first overflow glue groove are moderate, further avoid overflow of the front side, ensure the thickness of the glue on the side of the laminate, and improve the sealing and bonding effect of the laminate.

[0013] In one implementation, along the thickness direction of the laminate, the glue flow channel is arranged closer to the bottom wall of the laminate. With the above technical solution, the adhesive can fill the second overflow glue groove faster. After filling the second overflow glue groove, the adhesive continues to flow into the first overflow glue groove and the gap between the bottom wall of the laminate and the support plate, which is conducive to the adhesive filling the first overflow glue groove, the second overflow glue groove and the gap between the bottom wall of the laminate and the support plate, thereby ensuring the bonding effect between the laminate and the frame. At the same time, the first overflow glue groove accommodates more adhesive, which can improve the bonding strength between the frame and the upper part of the laminate, and improve the bonding reliability of the laminate.

[0014] In one implementation, a glue-blocking protrusion is provided on one side of the first side plate close to the laminate, and a gap between the glue-blocking protrusion and the side wall of the laminate forms a glue flow channel; or, a glue-blocking protrusion is provided on the side wall of the laminate, and a gap between the glue-blocking protrusion and the first side plate forms a glue flow channel; or, a glue-blocking protrusion is provided on one side of the first side plate close to the laminate and on the side wall of the laminate, and a gap between the two glue-blocking protrusions forms a glue flow channel. The above technical solution has a simple structure and is easy to process and manufacture.

[0015] In one implementation, along the direction approaching the laminate, the glue-blocking protrusion arranged on the first side plate gradually inclines in the direction away from the support plate; and / or,

[0016] Along the direction close to the first side plate, the glue blocking protrusion arranged on the laminate is gradually inclined in the direction away from the support plate. In this way, the glue blocking protrusion can better guide the adhesive to flow into the first overflow glue groove, which is conducive to the adhesive to be evenly filled into the first overflow glue groove and the second overflow glue groove, thereby improving the firmness of the bonding between the frame and the laminate.

[0017] In one implementation, the ratio of the orthographic projection area of ​​the first glue overflow groove on the plane perpendicular to the first side plate to the projection area of ​​the second glue overflow groove on the plane perpendicular to the first side plate is 1.05 to 3.5. This arrangement can further improve the bonding effect between the laminate and the frame and control the distribution of the structural adhesive on the side and bottom of the laminate. In addition, under this ratio, the glue overflow on the front of the laminate can be further controlled.

[0018] In one implementation, the orthographic projection area of ​​the first glue overflow groove on the plane perpendicular to the first side plate is 2.32 mm2-8.4 mm 2 ; and / or, the orthographic projection area of ​​the second overflow groove on the plane perpendicular to the first side plate is 1.856mm 2 -5.33mm 2 ; and / or, the difference between the orthographic projection area of ​​the first overflow glue groove on the plane perpendicular to the first side plate and the orthographic projection area of ​​the second overflow glue groove on the plane perpendicular to the first side plate is greater than or equal to 0.4mm 2 . To ensure the firmness of the bonding between the frame and the laminate, improve the glue overflow on the front of the laminate, and reduce the waste of adhesive.

[0019] In one implementation, the maximum height of the total overflow glue groove is 3.09 mm to 5.61 mm along the thickness direction of the laminate; and / or the maximum width of the total overflow glue groove is 0.3 mm to 5.74 mm along the direction perpendicular to the side wall of the laminate. In this case, the amount of glue can be further adjusted to improve the overflow of the adhesive glue to the top surface of the laminate, while ensuring the firmness of the bonding between the side wall of the laminate and the frame, and the sealing effect.

[0020] In one implementation, there is an adhesive layer between the bottom wall of the laminate and the support plate and the side wall of the laminate, and the peel strength between the adhesive layer and the laminate is greater than or equal to 20N / cm. In this case, the reliability of the bonding between the laminate and the frame can be further ensured throughout the life cycle of the photovoltaic module, and the laminate can be prevented from falling off the frame.

[0021] In one implementation, the thickness of the adhesive layer between the bottom wall of the laminate and the support plate is 0.9 mm-1.1 mm; and / or the thickness of the adhesive layer on the side wall of the laminate is 0.3 mm-5.74 mm. The adhesive can provide good bonding strength at this thickness.

[0022] In one implementation, the top of the baffle is flush with or lower than the top surface of the laminate; with this arrangement, rainwater can flow directly from the laminate to remove dust, that is, rainwater will not be blocked by the frame in the process of flushing dust, thereby improving the dust removal effect of the photovoltaic module frame.

[0023] And / or, the thickness of the baffle increases or decreases gradually in the direction away from the first side plate. When the thickness of the baffle increases gradually, the abutment area between the baffle and the side wall of the laminate is larger, which can prevent the laminate from being damaged due to stress concentration. When the thickness of the baffle decreases gradually, the space of the overflow glue groove can be further expanded to reduce the front overflow glue.

[0024] In one implementation, a support protrusion is provided on the top wall of the support plate; or a glue-receiving groove is provided on the top wall of the support plate, so as to improve the firmness of the bonding between the top wall of the support plate and the bottom wall of the laminate.

[0025] In one implementation, the frame and the laminate are bonded by structural adhesive and / or silica gel; and / or the frame and the short side or long side of the laminate are bonded. In this way, the lower edge or both side edges of the laminate are not blocked by the frame, and rainwater can flow directly from the lower edge or both side edges of the laminate, thereby achieving dust removal and improving the dust removal effect of the photovoltaic module frame.

[0026] A photovoltaic system comprises the photovoltaic assembly as described above. Compared with the prior art, the beneficial effects of the photovoltaic system provided by the embodiment of the present application are the same as those of the photovoltaic assembly, which will not be described in detail here.

[0027] In one implementation, the photovoltaic system includes a rooftop or floating mounting platform, so that the photovoltaic components can be installed on the rooftop or on the water surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0029] Figure 1 A schematic cross-sectional view of a photovoltaic module provided in an embodiment of the present application;

[0030] Figure 2 A schematic cross-sectional view of a photovoltaic module provided in another embodiment of the present application.

[0031] Reference numerals:

[0032] 1-laminate, 2-frame, 2a-baffle, 2b-overflow glue groove, 2b1-first overflow glue groove, 2b2-glue flow channel, 2b3-second overflow glue groove, 2c-glue blocking protrusion, 2d-first side plate, 2e-support plate, 2f-second side plate, 2h-bottom plate, 2i-support protrusion, 3-adhesive layer. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0034] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined. "Several" means one or more, unless otherwise clearly and specifically defined.

[0036] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0037] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] See also Figure 1-Figure 2 The photovoltaic assembly provided in the embodiment of the present application includes a frame 2 and a laminate 1 bonded to the frame 2, that is, the edge of the laminate 1 is fixed to the frame 2 by bonding. Specifically, the frame 2 includes a first side panel 2d, a support plate 2e and a baffle 2a. The baffle 2a and the support plate 2e are located on the same side of the first side panel 2d, that is, the baffle 2a and the support plate 2e are both located on the side of the first side panel 2d close to the laminate 1, and the support plate 2e and the baffle 2a are arranged opposite to each other. Specifically, the support plate 2e and the baffle 2a can be arranged in sequence along the thickness direction of the laminate 1, and the support plate 2e and the baffle 2a are arranged opposite to each other at intervals. The baffle 2a is fixedly connected to the top end of the first side panel 2d, and the baffle 2a and the first side panel 2d can be an integral structure, or the baffle 2a and the first side panel 2d can be fixedly connected by welding, screw connection, interference fit, etc. The support plate 2e is fixedly connected to the first side plate 2d, and the first side plate 2d and the support plate 2e are located between the top and bottom ends of the first side plate 2d. The support plate 2e and the first side plate 2d can be an integral structure, or the support plate 2e and the first side plate 2d can be fixedly connected by welding, screw connection, interference fit, etc.

[0039] The bottom wall of the laminate 1 is located on the support plate 2e, which is mainly used to support the bottom wall of the laminate 1, and during the bonding process, the adhesive will flow into the gap between the bottom wall of the laminate 1 and the support plate 2e. In addition, the side wall of the laminate 1 abuts against the end of the baffle 2a away from the first side plate 2d, one end of the baffle 2a is fixedly connected to the top of the first side plate 2d, and the other end of the baffle 2a abuts against the side wall of the laminate 1. The abutment between the side wall of the laminate 1 and the end of the baffle 2a away from the first side plate 2d includes the direct contact and abutment between the side wall of the laminate 1 and the end of the baffle 2a away from the first side plate 2d, and the side wall of the laminate 1 and the end of the baffle 2a away from the first side plate 2d have adhesive but are not in direct contact.

[0040] The side wall of the laminate 1, the first side plate 2d, the baffle 2a and the support plate 2e together form a total glue overflow groove 2b, that is, the space between the side wall of the laminate 1, the first side plate 2d, the baffle 2a and the support plate 2e forms the total glue overflow groove 2b. Along the direction from the top wall to the bottom wall of the laminate 1, the glue overflow groove includes a first glue overflow groove 2b1 and a second glue overflow groove 2b3 arranged in sequence. That is, the total glue overflow groove 2b includes a first glue overflow groove 2b1 and a second glue overflow groove 2b3 arranged in sequence from top to bottom, and the first glue overflow groove 2b1 and the second glue overflow groove 2b3 are connected through a glue flow channel 2b2.

[0041] In the photovoltaic assembly provided by the utility model, the side wall of the laminate 1 is against the baffle 2a, and the edge of the top surface of the laminate 1 is not blocked, that is, the light-facing surface of the laminate 1 is not blocked by the frame 2, which can effectively prevent dust accumulation at the edge of the laminate 1.

[0042] In the process of bonding the frame 2 and the laminate 1, glue can be directly injected into the second overflow glue groove 2b3, and the adhesive glue enters the first overflow glue groove 2b1 through the glue flow channel 2b2, and finally the adhesive glue fills the first overflow glue groove 2b1, the second overflow glue groove 2b3 and the gap between the support plate 2e and the bottom wall of the laminate 1. In the process of glue injection, since the adhesive glue enters the first overflow glue groove 2b1 through the glue flow channel 2b2, the glue flow channel 2b2 can control the speed and amount of the adhesive glue flowing into the first overflow glue groove 2b1 on the upper side, and the glue flow channel 2b2 forms a buffer and regulation effect on the adhesive glue entering the first overflow glue groove 2b1, which can improve the problem of excessive and too fast adhesive glue entering the first overflow glue groove 2b1 and causing the adhesive glue to overflow and flow to the top surface of the laminate 1. At the same time, the adhesive glue fills the first overflow glue groove 2b1, the second overflow glue groove 2b3 and the glue flow channel 2b2, so that the bonding between the frame 2 and the laminate 1 is more firm, and the side gluing effect of the laminate 1 is better.

[0043] The orthographic projection area of ​​the first glue overflow groove 2b1 on the plane perpendicular to the first side plate 2d is larger than the orthographic projection area of ​​the second glue overflow groove 2b3 on the plane perpendicular to the first side plate 2d. In this way, the capacity of the first glue overflow groove 2b1 is larger than the capacity of the second glue overflow groove 2b3, and the adhesive can fill the second glue overflow groove 2b3 faster. After filling the second glue overflow groove 2b3, the adhesive continues to flow into the first glue overflow groove 2b1 and the gap between the bottom wall of the laminate 1 and the support plate 2e, which is conducive to the adhesive filling the first glue overflow groove 2b1, the second glue overflow groove 2b3 and the gap between the bottom wall of the laminate 1 and the support plate 2e, thereby ensuring the bonding effect of the laminate 1 and the frame 2. In addition, the capacity of the first glue overflow groove 2b1 is large, which can prevent the adhesive from overflowing excessively from the first glue overflow groove 2b1 and flowing to the top surface of the laminate 1.

[0044] In a specific embodiment, the width of the glue flow channel 2b2 is 0.7mm-2mm along the direction perpendicular to the side wall of the laminate 1. Considering that the glue flow channel 2b2 is too wide, it cannot play a buffering role for the adhesive entering the first glue overflow groove 2b1, and the adhesive is easy to overflow to the front of the laminate; if the glue flow channel 2b2 is too narrow, the efficiency of glue injection will be reduced, thereby affecting the production efficiency of photovoltaic modules, and will also lead to less glue on the side of the laminate, and poor sealing and bonding effects. Therefore, the width of the glue flow channel 2b2 is set within a reasonable range of 0.7mm-2mm to ensure that the amount and flow rate of the adhesive entering the first glue overflow groove 2b1 are moderate, further avoiding glue overflow on the front, ensuring the thickness of the glue on the side of the laminate 1, and improving the sealing and bonding effects of the laminate 1. Exemplarily, the width of the glue flow channel 2b2 is 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm or 2 mm.

[0045] like Figure 1 and Figure 2 As shown, along the thickness direction of the laminate 1, the glue flow channel 2b2 is arranged closer to the bottom wall of the laminate 1. Specifically, along the thickness direction of the laminate 1, the glue flow channel 2b2 is arranged closer to the support plate 2e and farther away from the baffle 2a. With the above technical solution, the adhesive can fill the second overflow glue groove 2b3 faster. After filling the second overflow glue groove 2b3, the adhesive continues to flow into the first overflow glue groove 2b1 and the gap between the bottom wall of the laminate 1 and the support plate 2e, which is conducive to the adhesive filling the first overflow glue groove 2b1, the second overflow glue groove 2b3 and the gap between the bottom wall of the laminate 1 and the support plate 2e, thereby ensuring the bonding effect of the laminate 1 and the frame 2. At the same time, the first overflow glue groove 2b1 accommodates more adhesive, which can improve the bonding strength between the frame 2 and the upper part of the laminate 1 and improve the bonding reliability of the laminate 1. Of course, along the thickness direction of the laminate 1, the glue flow channel 2b2 can also be arranged closer to the top wall of the laminate 1, or the glue flow channel 2b2 can be flush with the middle position of the thickness of the laminate 1, which is not limited here.

[0046] like Figure 1 and Figure 2As shown, a glue blocking protrusion 2c is provided on the side of the first side plate 2d close to the laminate 1, and the gap between the glue blocking protrusion 2c and the side wall of the laminate 1 forms a glue flow channel 2b2, that is, the adhesive enters the first glue overflow groove 2b1 through the gap between the glue blocking protrusion 2c and the side wall of the laminate 1. Alternatively, a glue blocking protrusion 2c may be provided on the side wall of the laminate 1, and the gap between the glue blocking protrusion 2c and the first side plate 2d forms a glue flow channel 2b2, that is, the adhesive enters the first glue overflow groove 2b1 through the gap between the glue blocking protrusion 2c and the first side plate 2d. Alternatively, a glue blocking protrusion 2c is provided on the side of the first side plate 2d close to the laminate 1 and the side wall of the laminate 1, and the gap between the two glue blocking protrusions 2c forms a glue flow channel 2b2, that is, the adhesive enters the first glue overflow groove 2b1 through the gap between the glue blocking protrusion 2c on the first side plate 2d and the glue blocking protrusion 2c on the side wall of the laminate 1. Specifically, the glue blocking protrusion 2c can be provided only on the first side plate 2d, or only on the side wall of the laminate 1, or both on the first side plate 2d and the side wall of the laminate 1, and the glue flow channel 2b2 is formed by the glue blocking protrusion 2c. The glue blocking protrusion 2c and the first side plate 2d or the side wall of the laminate 1 can be an integral structure, or the glue blocking protrusion 2c and the first side plate 2d or the side wall of the laminate 1 can also be fixedly connected by welding, screw connection, interference fit, etc. The above technical solution has a simple structure and is easy to process and manufacture.

[0047] In the above embodiment, along the direction close to the laminate 1, the glue-blocking protrusion 2c provided on the first side plate 2d gradually tilts away from the support plate 2e, that is, the glue-blocking protrusion 2c on the first side plate 2d gradually tilts obliquely upward. Along the direction close to the first side plate 2d, the glue-blocking protrusion 2c provided on the laminate 1 gradually tilts away from the support plate 2e, that is, the glue-blocking protrusion 2c on the side wall of the laminate 1 also gradually tilts obliquely upward. With such a configuration, the glue-blocking protrusion 2c can better guide the adhesive to flow into the first overflow glue groove 2b1, which is conducive to the adhesive to be evenly filled into the first overflow glue groove 2b1 and the second overflow glue groove 2b3, thereby improving the firmness of the bonding between the frame 2 and the laminate 1.

[0048] The ratio of the orthographic projection area of ​​the first glue overflow groove 2b1 on the plane perpendicular to the first side plate 2d to the projection area of ​​the second glue overflow groove 2b3 on the plane perpendicular to the first side plate 2d is 3.5 to 1.05. This arrangement can further improve the bonding effect between the laminate 1 and the frame 2 and control the distribution of the adhesive on the side and bottom of the laminate 1. In addition, under this ratio, the glue overflow on the front of the laminate 1 can be further controlled.

[0049] Exemplarily, the ratio of the orthographic projection area of ​​the first glue overflow groove 2b1 on the plane perpendicular to the first side plate 2d to the projection area of ​​the second glue overflow groove 2b3 on the plane perpendicular to the first side plate 2d is 1.05, 1.2, 1.4, 1.5, 1.6, 1.8, 2.0, 2.2, 2.5, 2.8, 3.0, 3.2, 3.4 or 3.5.

[0050] Furthermore, the orthographic projection area of ​​the first glue overflow groove 2b1 on the plane perpendicular to the first side plate 2d is 2.32 mm 2 -8.4mm 2 The orthographic projection area of ​​the second glue overflow groove 2b3 on the plane perpendicular to the first side plate 2d is 1.856mm 2 -5.33mm 2 Considering that if the capacity of the first glue overflow groove 2b1 and the second glue overflow groove 2b3 is too large, the adhesive will be wasted, and if the capacity of the first glue overflow groove 2b1 and the second glue overflow groove 2b3 is too small, the firmness of the bonding between the frame 2 and the laminate 1 cannot be guaranteed, the orthographic projection area of ​​the first glue overflow groove 2b1 on the plane perpendicular to the first side plate 2d is set to 2.32mm 2 -8.4mm 2 The orthographic projection area of ​​the second overflow groove 2b3 on the plane perpendicular to the first side plate 2d is set to 1.856mm within a reasonable range. 2 -5.33mm 2 The reasonable range is used to ensure the firmness of the bonding between the frame 2 and the laminate 1, improve the glue overflow on the front side of the laminate 1, and prevent the waste of adhesive.

[0051] For example, the orthographic projection area of ​​the first glue overflow groove 2b1 on the plane perpendicular to the first side plate 2d is 2.32 mm 2 , 2.4mm 2 , 2.5mm 2 , 2.8mm 2 , 3.0mm 2 , 3.2mm 2 , 3.5mm 2 、3.8mm 2 , 4.0mm 2 , 4.2mm 2 , 4.5mm 2 , 4.8mm 2 , 5.0mm 2 , 5.2mm 2 , 5.5mm 2 , 5.8mm 2 、6.0mm 2 、6.2mm 2 、6.5mm 2 、6.8mm 2, 7.0mm 2 、7.2mm 2 , 7.5mm 2 、7.8mm 2 , 8.0mm 2 、8.2mm 2 or 8.4mm 2 The orthographic projection area of ​​the second glue overflow groove 2b3 on the plane perpendicular to the first side plate 2d is 1.856mm 2 , 2.0mm 2 , 2.2mm 2 , 2.5mm 2 , 2.8mm 2 , 3.0mm 2 , 3.2mm 2 , 3.5mm 2 、3.8mm 2 , 4.0mm 2 , 4.2mm 2 , 4.5mm 2 , 4.8mm 2 , 5.0mm 2 , 5.2mm 2 or 5.33mm 2 .

[0052] In addition, the difference between the orthographic projection area of ​​the first glue overflow groove 2b1 on the plane perpendicular to the first side plate 2d and the orthographic projection area of ​​the second glue overflow groove 2b3 on the plane perpendicular to the first side plate 2d is greater than or equal to 0.4 mm. 2 . In this way, when the capacity difference between the first overflow glue groove 2b1 and the second overflow glue groove 2b3 is within this range, it can further prevent excessive adhesive from entering the first overflow glue groove 2b1 in a short period of time, and the adhesive overflowing and flowing to the top surface of the laminate 1. Exemplarily, the difference between the orthographic projection area of ​​the first overflow glue groove 2b1 on the plane perpendicular to the first side plate 2d and the orthographic projection area of ​​the second overflow glue groove 2b3 on the plane perpendicular to the first side plate 2d is 0.4mm 2 , 0.5mm 2 , 0.6mm 2 wait.

[0053] like Figure 1 and Figure 2As shown, along the thickness direction of laminate 1, the maximum height of overflow glue total groove 2b is 3.09mm-5.61mm. Wherein the maximum height of overflow glue total groove 2b refers to the maximum extension distance of overflow glue total groove 2b along the thickness direction of laminate 1. If the maximum height of overflow glue total groove 2b is too high, the bonding glue easily overflows and flows to the top surface of laminate 1. If the maximum height of glue total groove is too small, the firmness of bonding between the side wall of laminate 1 and frame 2 cannot be guaranteed, so the maximum height of overflow glue total groove 2b is set within the reasonable range of 3.09mm-5.61mm. Exemplary, the maximum height of overflow glue total groove 2b is 3.09mm, 3.2mm, 3.5mm, 3.8mm, 4.0mm, 4.2mm, 4.5mm, 4.8mm, 5.0mm, 5.2mm, 5.5mm or 5.61mm.

[0054] Along the direction perpendicular to the side wall of the laminate 1, the maximum width of the total overflow glue groove 2b is 0.3mm-5.74mm. Among them, the maximum width of the total overflow glue groove 2b refers to the maximum extension distance of the total overflow glue groove 2b along the direction perpendicular to the side wall of the laminate 1. Considering that the maximum width of the total overflow glue groove 2b is too wide, the adhesive is wasted, and the maximum width of the total overflow glue groove 2b is too narrow, the firmness of the bonding between the frame 2 and the laminate 1 cannot be guaranteed, so the maximum width of the total overflow glue groove 2b is set within a reasonable range of 0.3mm-5.74mm. At this time, the amount of glue can be further regulated to improve the overflow of the adhesive to the top surface of the laminate 1, while ensuring the firmness of the bonding between the side wall of the laminate 1 and the frame 2 and the sealing effect. Exemplarily, the maximum width of the total overflow groove 2b is 0.3mm, 3.2mm, 3.5mm, 3.8mm, 4.0mm, 4.2mm, 4.5mm, 4.8mm, 5.0mm, 5.2mm, 5.5mm or 5.74mm.

[0055] As a preferred embodiment, there is an adhesive layer 3 between the bottom wall of the laminate 1 and the support plate 2e, as well as on the side wall of the laminate 1, and the peeling strength between the adhesive layer 3 and the laminate 1 is greater than or equal to 20N / cm. In this case, the reliability of the bonding between the laminate 1 and the frame 2 can be further ensured throughout the life cycle of the photovoltaic module, and the laminate 1 can be prevented from falling off the frame. For example, the peeling strength between the adhesive layer 3 and the laminate 1 is 20N / cm, 21N / cm, 22N / cm, 23N / cm, 25N / cm, etc.

[0056] In addition, the thickness of the adhesive layer 3 between the bottom wall of the laminate 1 and the support plate 2e is 0.9mm-1.1mm. The thickness of the adhesive layer 3 of the side wall of the laminate 1 is 0.3mm-5.74mm. The adhesive can provide good bonding strength at this thickness. Of course, the thickness of the adhesive layer 3 can be set arbitrarily according to actual conditions. Specifically, the thickness of the adhesive layer 3 between the bottom wall of the laminate 1 and the support plate 2e is 0.9mm, 0.95mm, 1.0mm, 1.05mm or 1.1mm. The thickness of the adhesive layer 3 of the side wall of the laminate 1 is 0.3mm, 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm or 5.74mm.

[0057] Exemplarily, a glue blocking protrusion 2c is provided on the first side plate 2d of the frame 2, and the width of the glue flow channel 2b2 is 0.7mm-2mm, preferably 1.3mm. The orthographic projection area of ​​the first glue overflow groove 2b1 on the plane perpendicular to the first side plate 2d is 6.4mm 2 -8.4mm 2 The orthographic projection area of ​​the second glue overflow groove 2b3 on the plane perpendicular to the first side plate 2d is 3.33mm 2 -5.33mm 2 Along the thickness direction of the laminate 1, the maximum height of the total glue overflow groove 2b is 3.09mm-5.09mm; along the direction perpendicular to the side wall of the laminate 1, the maximum width of the total glue overflow groove 2b is 1.74mm-5.74mm.

[0058] Exemplarily, a glue blocking protrusion 2c is provided on the first side plate 2d of the frame 2, and the width of the glue flow channel 2b2 is 0.7mm-2mm, preferably 0.7mm. The orthographic projection area of ​​the first glue overflow groove 2b1 on the plane perpendicular to the first side plate 2d is 2.32mm 2 -4.32mm 2 The orthographic projection area of ​​the second glue overflow groove 2b3 on the plane perpendicular to the first side plate 2d is 1.856mm 2 -3.856mm 2 Along the thickness direction of the laminate 1, the maximum height of the total glue overflow groove 2b is 3.3mm-5.3mm; along the direction perpendicular to the side wall of the laminate 1, the maximum width of the total glue overflow groove 2b is 0.3mm-4.3mm.

[0059] Exemplarily, a glue blocking protrusion 2c is provided on the first side plate 2d of the frame 2, and the width of the glue flow channel 2b2 is 0.7mm-2mm, preferably 0.7mm. The orthographic projection area of ​​the first glue overflow groove 2b1 on the plane perpendicular to the first side plate 2d is 4.06mm 2 -6.06mm 2The orthographic projection area of ​​the second glue overflow groove 2b3 on the plane perpendicular to the first side plate 2d is 1.72mm 2 -3.72mm 2 Along the thickness direction of the laminate 1, the maximum height of the total glue overflow groove 2b is 3.61mm-5.61mm; along the direction perpendicular to the side wall of the laminate 1, the maximum width of the total glue overflow groove 2b is 0.54mm-4.54mm.

[0060] Preferably, the baffle 2a abuts against the side wall of the laminate 1, the top of the baffle 2a is the side of the baffle 2a away from the support plate 2e, and the top of the baffle 2a can be flush with the top surface of the laminate 1 or the top of the baffle 2a is lower than the top surface of the laminate 1. In this way, rainwater can flow directly from the laminate 1 to remove dust, that is, rainwater will not be blocked by the frame 2 in the process of flushing dust, thereby improving the dust removal effect of the photovoltaic module frame 2.

[0061] In addition, the thickness of the baffle 2a gradually increases or decreases in the direction away from the first side plate 2d. When the thickness of the baffle 2a increases, the thickness of the baffle 2a at the position where it abuts against the side wall of the laminate 1 is the largest. With this arrangement, after the baffle 2a abuts against the side wall of the laminate 1, the abutting area is large, which can prevent the laminate 1 from being damaged due to stress concentration. When the thickness of the baffle 2a decreases, the space of the total overflow glue groove 2b can be further increased to reduce the overflow of glue from the front. Of course, the thickness of the baffle 2a can also be kept consistent, which is not limited here.

[0062] like Figure 1 As shown, the top wall of the support plate 2e may be provided with a glue-receiving groove, so that more adhesive can flow between the top wall of the support plate 2e and the bottom wall of the laminate 1, further improving the firmness of the bonding between the top wall of the support plate 2e and the bottom wall of the laminate 1. One or more glue-receiving grooves may be provided, and the shape of the glue-receiving grooves may be square, circular, etc., which are not limited here.

[0063] like Figure 2 As shown, the top wall of the support plate 2e is provided with a support protrusion 2i, and the support protrusion 2i supports the bottom wall of the laminate 1, so as to facilitate more adhesive to flow into the gap around the support protrusion 2i, thereby improving the firmness of the bonding between the top wall of the support plate 2e and the bottom wall of the laminate 1. One or more support protrusions 2i can be provided, and the top surface of the support protrusion 2i is preferably a plane, so as to increase the support area of ​​the support protrusion 2i and prevent the bottom wall of the laminate 1 from generating stress concentration and hidden cracks.

[0064] The frame 2 and the laminate 1 may be bonded together by structural adhesive and / or silicone, and a suitable adhesive may be selected according to actual conditions.

[0065] After the photovoltaic module is installed, the two short sides of the laminate are distributed vertically and the two long sides are distributed horizontally, so the frame 2 is preferably bonded to the short side of the laminate 1, so that the lower edge of the laminate is not blocked by the frame 2, and rainwater can flow directly from the lower edge of the laminate 1 to achieve dust removal, that is, rainwater will not be blocked by the frame 2 in the process of flushing dust, which improves the dust removal effect of the photovoltaic module frame 2. Of course, the frame 2 can also be bonded to the long side of the laminate 1, so that the two side edges of the laminate are not blocked by the frame 2, and part of the rainwater can flow directly from the two side edges of the laminate 1 to achieve dust removal.

[0066] In the above embodiments, the frame 2 can be made of aluminum alloy or steel to protect the laminate 1. The first side plate 2d, baffle 2a and support plate 2e included in the frame 2 can be integrally formed or separately manufactured and fixedly connected by welding or the like.

[0067] like Figure 1 and Figure 2 As shown, the frame 2 may further include a bottom plate 2h and a second side plate 2f, the bottom end of the first side plate 2d is fixedly connected to the bottom plate 2h, the top end of the second side plate 2f is fixedly connected to the bottom wall of the support plate 2e, and the bottom end of the second side plate 2f is fixedly connected to the bottom plate 2h. In this way, the second side plate 2f and the first side plate 2d jointly support the support plate 2e, making the frame 2 more stable. Among them, reinforcing ribs may be provided at the bottom of the support plate 2e and the upper part of the bottom plate 2h.

[0068] In addition, the embodiment of the present application further provides a photovoltaic system, which includes the photovoltaic assembly provided by any of the above embodiments. Compared with the prior art, the beneficial effects of the photovoltaic system provided by the embodiment of the present application are the same as the beneficial effects of the above photovoltaic assembly, which will not be repeated here.

[0069] The photovoltaic system may also include a rooftop or floating installation platform, so that the photovoltaic components can be installed on the rooftop or on the water surface, or on the ground, without limitation.

[0070] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0071] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A photovoltaic module, characterized in that: comprising a frame and a laminate bonded to the frame, The frame includes a first side plate, a support plate and a baffle plate, wherein the baffle plate and the support plate are located on the same side of the first side plate, and the support plate and the baffle plate are arranged opposite to each other; the baffle plate is fixedly connected to the top end of the first side plate, and the support plate is fixedly connected to the first side plate; The bottom wall of the laminate is located on the support plate, and the side wall of the laminate abuts against the end of the baffle away from the first side plate; The side walls, first side plate, baffle plate and support plate of the laminate together form a total glue overflow groove, and along the direction from the top wall to the bottom wall of the laminate, the total glue overflow groove includes a first glue overflow groove and a second glue overflow groove arranged in sequence, and the first glue overflow groove and the second glue overflow groove are connected by a glue flow channel, and the orthographic projection area of ​​the first glue overflow groove on the plane perpendicular to the first side plate is greater than the orthographic projection area of ​​the second glue overflow groove on the plane perpendicular to the first side plate.

2. The photovoltaic module according to claim 1, characterized in that: Along a direction perpendicular to the side wall of the laminate, the width of the glue flow channel is 0.7 mm-2 mm.

3. The photovoltaic module according to claim 1, characterized in that: Along the thickness direction of the laminate, the glue flow channel is arranged closer to the bottom wall of the laminate.

4. The photovoltaic module according to claim 1, characterized in that: A glue-blocking protrusion is provided on a side of the first side panel close to the laminate, and the gap between the glue-blocking protrusion and the side wall of the laminate forms the glue flow channel; or, a glue-blocking protrusion is provided on the side wall of the laminate, and the gap between the glue-blocking protrusion and the first side panel forms the glue flow channel; or, glue-blocking protrusions are provided on a side of the first side panel close to the laminate and on the side wall of the laminate, and the gap between the two glue-blocking protrusions forms the glue flow channel.

5. The photovoltaic module according to claim 4, characterized in that: Along the direction approaching the laminate, the glue blocking protrusion arranged on the first side plate gradually tilts away from the support plate; and / or, Along the direction approaching the first side plate, the glue-blocking protrusions arranged on the laminate gradually incline toward the direction away from the support plate.

6. The photovoltaic module according to claim 1, characterized in that: The ratio of the orthographic projection area of ​​the first glue overflow groove on the plane perpendicular to the first side plate to the projection area of ​​the second glue overflow groove on the plane perpendicular to the first side plate is 1.05-3.

5.

7. The photovoltaic module according to claim 6, characterized in that: The orthographic projection area of ​​the first overflow groove on the plane perpendicular to the first side plate is 2.32 mm 2 -8.4mm 2 ; and / or, the orthographic projection area of ​​the second overflow groove on the plane perpendicular to the first side plate is 1.856mm 2 -5.33mm 2 ; and / or, the difference between the orthographic projection area of ​​the first overflow glue groove on the plane perpendicular to the first side plate and the orthographic projection area of ​​the second overflow glue groove on the plane perpendicular to the first side plate is greater than or equal to 0.4mm 2 .

8. The photovoltaic module according to claim 1, characterized in that: Along the thickness direction of the laminate, the maximum height of the total glue overflow groove is 3.09mm-5.61mm; and / or, along the direction perpendicular to the side wall of the laminate, the maximum width of the total glue overflow groove is 0.3mm-5.74mm.

9. The photovoltaic module according to any one of claims 1 to 8, characterized in that: There is an adhesive layer between the bottom wall of the laminate and the support plate and on the side walls of the laminate, and the peeling strength between the adhesive layer and the laminate is greater than or equal to 20N / cm.

10. The photovoltaic module according to any one of claims 1 to 8, characterized in that: The thickness of the adhesive layer between the bottom wall of the laminate and the support plate is 0.9 mm-1.1 mm; and / or the thickness of the adhesive layer on the side wall of the laminate is 0.3 mm-5.74 mm.

11. The photovoltaic module according to any one of claims 1 to 8, characterized in that: The top of the baffle is flush with or lower than the top surface of the laminate; and / or the thickness of the baffle gradually increases or decreases along a direction away from the first side plate.

12. The photovoltaic module according to any one of claims 1 to 8, characterized in that: The top wall of the support plate is provided with a protrusion; and / or, the top wall of the support plate is provided with a glue-containing groove.

13. The photovoltaic module according to any one of claims 1 to 8, characterized in that: The frame is bonded to the laminate by means of structural adhesive and / or silica gel; and / or the frame is bonded to the short side or long side of the laminate.

14. A photovoltaic system, characterized in that: A photovoltaic module comprising any one of claims 1-13.

15. The photovoltaic system according to claim 14, characterized in that: The photovoltaic system includes a rooftop or floating mounting platform.

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