A gap waterproofing device and photovoltaic system

Abstract

This utility model discloses a gap waterproofing device and a photovoltaic system, relating to the field of photovoltaic module technology. The gap waterproofing device is used to shield the gap between two adjacent photovoltaic modules. The gap waterproofing device includes a waterproof cover plate and a locking buckle that abut against both ends of the module gap. The waterproof cover plate has a snap-fit ​​rod extending along the depth direction of the module gap. The snap-fit ​​rod engages with the locking buckle, so that the waterproof cover plate is tightly pressed against the module gap by the pre-tightening force applied by the locking buckle, effectively shielding the module gap and allowing water to flow along the waterproof cover plate to the photovoltaic module, preventing water from seeping into the module gap, reducing the risk of electrical short circuits in the photovoltaic module due to water seepage, and improving the working reliability of the photovoltaic module.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module technology, and in particular to a gap waterproofing device and a photovoltaic system. Background Technology

[0002] With the continuous development of the photovoltaic industry, the construction scale of photovoltaic power plants is constantly increasing, leading to a rise in after-sales issues, among which water leakage is particularly prominent. To address this problem, most photovoltaic power plants currently use drainage channels at the frame or bracket connection points of photovoltaic modules to guide rainwater, snowmelt, and other accumulated water out, preventing water from seeping into the brackets. However, in extreme weather events such as short-term heavy rainfall and typhoons, the instantaneous rainfall far exceeds the design capacity of the drainage channels, resulting in untimely drainage and even overflow. If the drainage channels fail to drain properly, accumulated water may backflow onto the back of the photovoltaic modules or electrical connections, increasing the risk of electrical short circuits and seriously affecting the operational reliability of the photovoltaic modules. Utility Model Content

[0003] The purpose of this utility model is to provide a gap waterproofing device and photovoltaic system, which allows the waterproof cover to be tightly pressed onto the gap of the module by the pre-tightening force applied by the locking buckle, effectively blocking the gap of the module to prevent water from seeping in, improving the working reliability of the photovoltaic module, and solving the technical problem of low working reliability of existing photovoltaic modules due to water seepage.

[0004] To achieve the above objectives, this utility model provides a gap waterproofing device for shielding the gap between two adjacent photovoltaic modules. The gap waterproofing device includes a waterproof cover plate and a locking buckle that abut against both ends of the module gap. The waterproof cover plate is provided with a snap-fit ​​rod extending along the depth direction of the module gap, and the snap-fit ​​rod engages with the locking buckle.

[0005] In some embodiments, the waterproof cover has a raised section on the side away from the module gap that forms a flow guide surface, which is used to guide accumulated water to flow to two adjacent photovoltaic modules.

[0006] In some embodiments, the guiding surface is an arc surface, which includes a first arc surface, a second arc surface, and a transition arc surface that connects the first arc surface and the second arc surface; the first arc surface and the second arc surface are respectively used to guide the accumulated water to flow to both sides of the transition arc surface.

[0007] In some embodiments, the component gap is formed by adjacent first and second frame borders; the waterproof cover includes a cover body and a first overlapping edge and a second overlapping edge respectively disposed on both sides of the cover body, the first overlapping edge overlapping the first frame border and the second overlapping edge overlapping the second frame border; a first arcuate surface is formed on the first overlapping edge and a second arcuate surface is formed on the second overlapping edge.

[0008] In some embodiments, the locking buckle includes a first elastic arm abutting against a first frame, a second elastic arm abutting against a second frame, and a transverse connecting rod integrally connected between the first elastic arm and the second elastic arm; the locking rod is provided with a transverse locking groove extending along the width direction of the component gap, and the transverse locking groove is locked and connected to the transverse connecting rod.

[0009] In some embodiments, the first elastic arm is bent to form a first protrusion, and the second elastic arm is bent to form a second protrusion. Both the first protrusion and the second protrusion are arc-shaped protrusions, and they are integrally connected to both ends of the transverse connecting rod, respectively. The first protrusion abuts against the first frame, and the second protrusion abuts against the second frame.

[0010] In some embodiments, a stop block is provided at the end of the snap-fit ​​rod away from the waterproof cover plate, and a conical surface is formed at the end of the snap-fit ​​rod facing the stop block. The small diameter end of the conical surface faces the abutting surface of the stop block, and an annular groove is formed between the conical surface and the abutting surface.

[0011] The first elastic arm has a first locking part at the end away from the transverse connecting rod, and the second elastic arm has a second locking part at the end away from the transverse connecting rod. The first locking part and the second locking part are respectively locked into the annular groove.

[0012] In some embodiments, both the first snap-fit ​​portion and the second snap-fit ​​portion are V-shaped structures.

[0013] In some embodiments, the guide surface is a V-shaped surface, which includes a first inclined surface, a second inclined surface, and a V-shaped transition surface that connects the first inclined surface and the second inclined surface; the first inclined surface and the second inclined surface are respectively used to guide the accumulated water to flow to both sides of the V-shaped transition surface.

[0014] This utility model also provides a photovoltaic system, including the above-mentioned gap waterproofing device.

[0015] Compared to the prior art, this utility model optimizes the structure of the gap waterproofing device. The optimized gap waterproofing device is used for the gap between two adjacent photovoltaic modules. It includes a waterproof cover plate and a locking buckle, which abut against both ends of the module gap. The locking rod of the waterproof cover plate is connected to the locking buckle, so that the waterproof cover plate is tightly pressed against the module gap by the pre-tightening force applied by the locking buckle, effectively blocking the module gap and allowing water to flow along the waterproof cover plate to the photovoltaic module. This prevents water from seeping into the module gap, reduces the risk of electrical short circuits in the photovoltaic module due to water seepage, and improves the working reliability of the photovoltaic module. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 A schematic diagram of the gap waterproofing device provided in the embodiment of this utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the waterproof cover plate in the middle;

[0019] Figure 3 for Figure 1 A diagram of the locking mechanism.

[0020] The attached figures are labeled as follows:

[0021] 1. Photovoltaic module; 2. Module gap; 3. Waterproof cover; 4. Locking buckle;

[0022] First border 11 and second border 12;

[0023] Snap-fit ​​rod 31 and guide surface 32;

[0024] The transverse locking groove 311, the stop block 312, the conical surface 313, and the annular locking groove 314;

[0025] Abutment surface 3121;

[0026] First arc surface 321, second arc surface 322 and transition arc surface 323;

[0027] First elastic arm 41, second elastic arm 42 and transverse connecting rod 43;

[0028] The first protrusion 411 and the first snap-fit ​​portion 412;

[0029] The second protrusion 421 and the second snap-fit ​​portion 422. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] This utility model discloses a gap waterproofing device for blocking the gap 2 between two adjacent photovoltaic modules 1. (See attached...) Figure 1 As shown, the gap waterproofing device includes a waterproof cover plate 3 and a locking buckle 4 that abut against both ends of the module gap 2. Specifically, the two ends of the module gap 2 are respectively formed with an upper opening and a lower opening. The waterproof cover plate 3 abuts against the upper opening, and the locking buckle 4 abuts against the lower opening. The waterproof cover plate 3 is used to prevent water from flowing into the module gap 2 from the upper opening, and the locking buckle 4 is used to fix the waterproof cover plate 3 between the two photovoltaic modules 1.

[0033] As attached Figure 2 As shown, the waterproof cover 3 is provided with a snap-fit ​​rod 31, which extends along the depth direction of the module gap 2. The snap-fit ​​rod 31 engages with the locking buckle 4, which facilitates disassembly and assembly, and allows the waterproof cover 3 to be tightly pressed onto the module gap 2 by the pre-tightening force applied by the locking buckle 4. This effectively blocks the module gap 2, allowing water to flow along the waterproof cover 3 to the photovoltaic module 1, preventing water from seeping into the module gap 2, reducing the risk of electrical short circuits in the photovoltaic module 1 due to water seepage, and improving the operational reliability of the photovoltaic module 1.

[0034] As a preferred embodiment, considering that the gap 2 between two adjacent photovoltaic modules 1 is relatively long, to ensure reliable fixation of the waterproof cover plate 3, the waterproof cover plate 3 is fixed with several locking rods 31, each locking rod 31 being equipped with a locking buckle 4. All locking rods 31 are fixed to the waterproof cover plate 3 by welding, and all locking rods 31 are evenly distributed to ensure that the waterproof cover plate 3 is subjected to uniform force.

[0035] As a preferred embodiment, the waterproof cover plate 3 has a protrusion forming a guide surface 32 on the side away from the module gap 2. The guide surface 32 is used to guide the accumulated water to flow to the two adjacent photovoltaic modules 1, so that the accumulated water flows along the preset path and is discharged faster, rather than stagnating in the module gap 2, avoiding the flow into the module gap 2 and reducing the risk of water seepage.

[0036] In a preferred embodiment, the guide surface 32 is an arc surface, with the center of the arc surface higher than its two sides, forming a natural guide slope on both sides; specifically, as shown in the attached figure. Figure 2As shown, the guiding surface 32 includes a first arc surface 321, a second arc surface 322, and a transition arc surface 323 that connects the first arc surface 321 and the second arc surface 322. The first arc surface 321, the transition arc surface 323, and the second arc surface 322 are smoothly connected in sequence to form an arched structure. The first arc surface 321 and the second arc surface 322 are used to guide the water to flow to both sides of the transition arc surface 323, so that the water is discharged from the surface of the photovoltaic module 1 and avoids accumulating at the module gap 2.

[0037] Furthermore, the first arc surface 321 and the second arc surface 322 are arranged in a completely symmetrical manner with the central symmetry plane of the transition arc surface 323 as the reference. The three of them achieve a continuous transition of fluid through a gradual change in curvature, forming an arched symmetrical structure, realizing the bidirectional diversion function, ensuring that the accumulated water is evenly diverted to the first arc surface 321 and the second arc surface 322 along the center line of the transition arc surface 323, and eliminating the risk of eccentric load caused by unilateral drainage.

[0038] The module gap 2 is formed between the frames of two adjacent photovoltaic modules 1. Preferably, the module gap 2 is formed by the adjacent first frame 11 and second frame 12. As a preferred embodiment, the waterproof cover 3 adopts a double-sided overlapping design, including a cover body and a first overlapping edge and a second overlapping edge respectively provided on both sides of the cover body. The first overlapping edge overlaps with the first frame 11, and the second overlapping edge overlaps with the second frame 12, ensuring that the width of the waterproof cover 3 is greater than the width of the module gap 2, ensuring that the waterproof cover 3 can completely cover the module gap 2, so that the waterproof cover 3 can resist vertical penetration and lateral seepage of extreme weather such as rainstorms and snowmelt, and the waterproof effect is better.

[0039] The first arc surface 321 is formed on the first overlap edge, and the second arc surface 322 is formed on the second overlap edge. The first overlap edge and the second overlap edge are connected by a cover plate body with a specific radius of curvature to form a central raised structure, which accelerates the surface drainage of the waterproof cover plate 3.

[0040] As a preferred embodiment, as shown in the appendix Figure 3 As shown, the locking buckle 4 includes a first elastic arm 41 that abuts against the first frame 11, a second elastic arm 42 that abuts against the second frame 12, and a transverse connecting rod 43 integrally connected between the first elastic arm 41 and the second elastic arm 42. When the locking buckle 4 is locked, both the first elastic arm 41 and the second elastic arm 42 undergo elastic deformation, so that the locking buckle 4 relies on the elastic force of the first elastic arm 41 and the second elastic arm 42 to achieve locking. This can not only make the waterproof cover plate 3 evenly stressed on both sides, avoiding the deflection of the waterproof cover plate 3 caused by unilateral pressure, but also absorb the high-frequency vibration of the photovoltaic system by utilizing the damping characteristics of the two elastic arms, effectively suppressing the high-frequency vibration of the two adjacent photovoltaic modules 1 when subjected to wind load and mechanical disturbance, thus improving the stability of the photovoltaic system.

[0041] The locking rod 31 is provided with a transverse locking groove 311 extending along the width direction of the module gap 2. The transverse locking groove 311 is locked and connected to the transverse connecting rod 43. This not only avoids the cumbersome adjustment process involved in traditional bolt connections, but also allows for quick assembly and disassembly without special tools. It also enables the locking rod 31 and the locking buckle 4 to form a tight fit, limiting the lateral displacement of the photovoltaic module 1 under wind load, vibration or high temperature, and improving the fixing stability of the locking buckle 4.

[0042] In a preferred embodiment, the first elastic arm 41 is bent to form a first protrusion 411, and the second elastic arm 42 is bent to form a second protrusion 421. Both the first protrusion 411 and the second protrusion 421 are arc-shaped protrusions, and they are integrally connected to both ends of the transverse connecting rod 43. This not only avoids stress concentration in the two elastic arms, improves the fatigue resistance of the locking buckle 4, and extends its service life, but also allows the two elastic arms to flexibly deform within a certain range using the two protrusions, adapting to the small displacements of the photovoltaic module 1 caused by thermal expansion and contraction or wind-induced swaying, avoiding stress accumulation or structural damage caused by rigid connections, and improving the stability of the photovoltaic module 1 in complex environments. The first protrusion 411 abuts against the first frame 11, and the second protrusion 421 abuts against the second frame 12, so that the elastic support structure between the locking buckle 4 and the two frames can buffer the instantaneous impact energy through elastic deformation when encountering strong winds or mechanical collisions, reducing the risk of the waterproof cover 3 becoming unstable.

[0043] In a preferred embodiment, the end of the snap-fit ​​rod 31 away from the waterproof cover plate 3 is provided with a stop block 312, and the end of the snap-fit ​​rod 31 facing the stop block 312 forms a conical surface 313. The small diameter end of the conical surface 313 faces the abutting surface 3121 of the stop block 312. The abutting surface 3121 is an annular plane, and an annular groove 314 is formed between the conical surface 313 and the abutting surface 3121.

[0044] The first elastic arm 41 has a first locking part 412 at the end away from the transverse connecting rod 43, and the second elastic arm 42 has a second locking part 422 at the end away from the transverse connecting rod 43. The first locking part 412 and the second locking part 422 are respectively locked with the annular groove 314. The two locking parts are symmetrically locked with the annular groove 314 to form a bidirectional locking engagement. The deformation capability of the elastic arm allows the locking part to generate adaptive displacement within the annular groove 314, preventing the two elastic arms from coming out of the annular groove 314 due to vibration or thermal expansion and contraction, maintaining a constant clamping force, effectively preventing the damping performance of the locking buckle 4 from being reduced due to thermal expansion and contraction of the material, and improving the connection reliability between the locking rod 31 and the locking buckle 4.

[0045] As a preferred embodiment, both the first snap-fit ​​part 412 and the second snap-fit ​​part 422 are V-shaped structures, so that the two snap-fit ​​parts are connected to the annular groove 314 by elastic force, without the need for bolt fastening, making disassembly and assembly more convenient.

[0046] In another preferred embodiment, the guide surface 32 is a V-shaped surface, which includes a first inclined surface, a second inclined surface, and a V-shaped transition surface that connects the first inclined surface and the second inclined surface. That is, the first inclined surface and the second inclined surface are arranged symmetrically in a V-shape. The first inclined surface and the second inclined surface are used to guide the water to flow to both sides of the V-shaped transition surface, so that the water is separated along the two inclined surfaces under the action of gravity, avoiding excessive local load caused by concentrated drainage on one side. Moreover, the V-shaped transition surface adopts a broken line transition to disperse the water flow impact, accelerate the drainage of water, and reduce the water retention time.

[0047] This utility model also provides a photovoltaic system, including the above-mentioned gap waterproofing device, which has the same technical effect.

[0048] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0049] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A gap waterproofing device, characterized by, Used to shield the gap (2) between two adjacent photovoltaic modules (1); the gap waterproofing device includes a waterproof cover plate (3) and a locking buckle (4) that abut against both ends of the gap (2) respectively. The waterproof cover plate (3) is provided with a snap-fit ​​rod (31) extending along the depth direction of the gap (2). The snap-fit ​​rod (31) is engaged with the locking buckle (4).

2. The gap seal of claim 1, wherein The waterproof cover plate (3) has a protrusion on the side away from the component gap (2) to form a flow guide surface (32), which is used to guide the accumulated water to flow to the two adjacent photovoltaic modules (1).

3. The gap seal of claim 2, wherein The guide surface (32) is an arc surface, which includes a first arc surface (321), a second arc surface (322), and a transition arc surface (323) that connects the first arc surface (321) and the second arc surface (322). The first arc surface (321) and the second arc surface (322) are used to guide the accumulated water to flow to both sides of the transition arc surface (323).

4. The gap seal of claim 3, wherein The component gap (2) is formed by the adjacent first frame (11) and second frame (12); the waterproof cover (3) includes a cover body and a first overlapping edge and a second overlapping edge respectively provided on both sides of the cover body, the first overlapping edge overlapping the first frame (11) and the second overlapping edge overlapping the second frame (12); the first arc surface (321) is formed on the first overlapping edge and the second arc surface (322) is formed on the second overlapping edge.

5. The gap seal of claim 4, wherein, The locking buckle (4) includes a first elastic arm (41) abutting against the first frame (11), a second elastic arm (42) abutting against the second frame (12), and a transverse connecting rod (43) integrally connected between the first elastic arm (41) and the second elastic arm (42); the locking rod (31) is provided with a transverse locking groove (311) extending along the width direction of the component gap (2), and the transverse locking groove (311) is locked and connected to the transverse connecting rod (43).

6. The gap seal of claim 5, wherein The first elastic arm (41) is bent to form a first protrusion (411), and the second elastic arm (42) is bent to form a second protrusion (421). Both the first protrusion (411) and the second protrusion (421) are arc protrusions, and they are integrally connected to both ends of the transverse connecting rod (43). The first protrusion (411) abuts against the first frame (11), and the second protrusion (421) abuts against the second frame (12).

7. The gap seal of claim 5, wherein The end of the snap-fit ​​rod (31) away from the waterproof cover plate (3) is provided with a stop block (312), and the end of the snap-fit ​​rod (31) facing the stop block (312) forms a conical surface (313). The small diameter end of the conical surface (313) faces the abutting surface (3121) of the stop block (312), and an annular groove (314) is formed between the conical surface (313) and the abutting surface (3121). The first elastic arm (41) has a first locking part (412) at one end away from the transverse connecting rod (43), and the second elastic arm (42) has a second locking part (422) at one end away from the transverse connecting rod (43). The first locking part (412) and the second locking part (422) are respectively locked with the annular groove (314).

8. The gap seal of claim 7, wherein, Both the first snap-fit ​​part (412) and the second snap-fit ​​part (422) are V-shaped structures.

9. The gap seal of claim 2, wherein, The guide surface (32) is a V-shaped surface, and the guide surface (32) includes a first inclined surface, a second inclined surface and a V-shaped transition surface that is connected between the first inclined surface and the second inclined surface; the first inclined surface and the second inclined surface are respectively used to guide the accumulated water to flow to both sides of the V-shaped transition surface.

10. A photovoltaic system characterized by, Includes the gap waterproofing device as described in any one of claims 1 to 9.

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