Waterproof structure based on building photovoltaic integrated system

Abstract

The utility model relates to photovoltaic technical field, concretely relates to a waterproof structure based on building photovoltaic integration system, including photovoltaic module, the photovoltaic connecting mechanism for connecting each photovoltaic module and the support frame for supporting photovoltaic connecting mechanism, photovoltaic connecting mechanism includes upper pressing plate, lower pressing plate and the connecting piece connected between two pressing plates, and the two side walls of connecting piece are surrounded into two independent insertion slots with upper pressing plate, lower pressing plate, and photovoltaic module is connected in the insertion slot, and the joint between both is equipped with sealing gum, and the inner bottom of one insertion slot is opened along the axial direction of photovoltaic connecting mechanism and is equipped with the water outlet on the drainage through groove. Through the implementation of the scheme, the effect that the daily waterproof function and the continuous waterproof when the daily waterproof function is abnormal can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic technology, specifically to a waterproof structure based on a building photovoltaic integrated system. Background Technology

[0002] Building-integrated photovoltaics (BIPV) integrates photovoltaic modules into buildings, combining the advantages of architectural aesthetics and green energy to achieve the integration of photovoltaic power generation with building functions. BIPV systems achieve efficient integration of buildings and energy by combining photovoltaic power generation technology with building materials, design, and construction, thus achieving the goals of energy conservation, emission reduction, and green development. Therefore, BIPV systems are widely used in distributed photovoltaic projects.

[0003] In the practical application of BIPV systems, waterproofing has always been a critical issue requiring close attention. It is a crucial element in ensuring the long-term stable operation of distributed photovoltaic systems and directly affects the safety and lifespan of buildings. Inadequate waterproofing measures can not only damage photovoltaic modules but also cause water damage and flooding inside the building, resulting in serious economic losses and safety hazards.

[0004] The main areas prone to leakage are the joints between the photovoltaic (PV) modules and the connecting components. Since the PV modules are installed at an angle, this leakage is particularly concentrated at the connection between the horizontal connecting components and the PV modules. If gaps or other connection problems exist between the horizontal connecting components and the PV modules as water flows downwards, it directly leads to leaks within the building. Therefore, waterproofing between the horizontal connecting components and the PV modules is extremely important. Utility Model Content

[0005] The present invention aims to provide a waterproof structure based on a building photovoltaic integrated system, so as to achieve the effect of daily waterproofing and continuous waterproofing even when the daily waterproofing function is abnormal.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a waterproof structure based on a building photovoltaic integrated system, comprising photovoltaic modules, a photovoltaic connection mechanism for connecting the photovoltaic modules, and a support frame for supporting the photovoltaic connection mechanism. The photovoltaic connection mechanism includes an upper pressure plate, a lower pressure plate, and a connector connected between the two pressure plates. The two side walls of the connector, together with the upper and lower pressure plates, form two independent slots. The photovoltaic modules are connected in the slots, and the joint between them is sealed with sealant. A drainage channel is provided on the inner bottom surface of one slot along the axial direction of the photovoltaic connection mechanism, and a water outlet is provided on the drainage channel.

[0007] Preferably, as an improvement, the upper pressure plate is detachably connected to the connector.

[0008] Preferably, as an improvement, the upper end face of the connector is provided with a groove extending through it along its axial direction, and the side of the groove is provided with a sliding groove and a locking groove, the locking groove being located below the sliding groove. The lower surface of the upper pressure plate is provided with a sliding block, and the side of the sliding block is provided with a locking protrusion for engaging with the locking groove.

[0009] Preferably, as an improvement, the spacing between the protrusion and the upper pressure plate and the spacing between the slot and the upper surface of the connector are the same.

[0010] Preferably, as an improvement, the outer contour of the card protrusion is arc-shaped, and the position of the connector between the card groove and the slide groove is rounded.

[0011] Preferably, as an improvement, the upper surface of the connector is provided with a positioning groove, and the lower surface of the upper pressure plate is provided with a positioning block corresponding to the positioning groove. The upper pressure plate and the connector are connected by screws.

[0012] Preferably, as an improvement, the support frame includes a crossbeam, a longitudinal beam, and a support column connected sequentially from top to bottom. The support column has a hollow structure inside and is equipped with a drainage pipe leading to the building's drainage system.

[0013] Preferably, as an improvement, the width of the drainage channel is 1cm-1.5cm and the depth is 0.8cm-1.5cm.

[0014] Preferably, as an improvement, the upper surface of the upper pressure plate is a wedge surface, which forms a triangular structure with the lower surface of the upper pressure plate.

[0015] The advantages of this solution are:

[0016] 1. Multiple waterproofing effects: This includes both daily and post-construction waterproofing. For daily waterproofing, the two pressure plates and connectors work together to form a slot that holds the photovoltaic module tightly, reducing the gap between the module and the pressure plate. Sealant is applied to the joint between the photovoltaic module and the two pressure plates to achieve daily waterproofing. Furthermore, for even better daily waterproofing, the upper surface of the upper pressure plate is designed as a wedge, forming a triangular structure with its lower surface. This facilitates the smooth and rapid transfer of rainwater and cleaning water from the photovoltaic module to the upper pressure plate and downwards, preventing prolonged accumulation in this area.

[0017] Post-construction waterproofing refers to waterproofing systems designed to prevent leaks inside the building in the long term, especially when the regular waterproofing function malfunctions (e.g., sealant fails due to prolonged exposure to sunlight or hardens and cracks). Specifically, if sealant failure causes a crack between the photovoltaic modules and the upper pressure plate, rainwater flows through the crack along the contact surface into a drainage channel, collects, and is discharged out of the building through an outlet.

[0018] 2. Through the ingenious design of the photovoltaic connection mechanism, it can not only ensure the tightness of the connection between it and the photovoltaic module to achieve better waterproof effect, but also reduce the installation difficulty of the photovoltaic module, improve the installation efficiency, and at the same time, it can effectively avoid the problem of scratching the photovoltaic module during the installation process. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0020] Figure 2 A cross-sectional view of a photovoltaic module installed in a photovoltaic connection mechanism.

[0021] Figure 3 for Figure 2 A magnified view of part A in the image.

[0022] Figure 4 This is a schematic diagram of the photovoltaic connection mechanism.

[0023] Figure 5 This is a diagram showing the connection between the upper pressure plate and the connecting parts via screws.

[0024] Figure 6 This is another diagram showing the upper pressure plate and the connecting piece connected by screws.

[0025] The reference numerals in the accompanying drawings include: photovoltaic module 1, upper pressure plate 2, sliding block 21, latching protrusion 22, lower pressure plate 3, connector 4, groove 41, slot 42, sliding groove 43, slot 5, drainage channel 6, branch outlet 7, drainage pipe 8, crossbeam 9, longitudinal beam 10, support column 11, screw 12. Detailed Implementation

[0026] The following detailed description illustrates the specific implementation method:

[0027] The basic implementation examples are as follows: Figures 1-6The diagram illustrates a waterproof structure based on a building-integrated photovoltaic (BIPV) system. It includes photovoltaic modules 1, a photovoltaic connection mechanism for connecting the photovoltaic modules 1, and a support frame for supporting the photovoltaic connection mechanism. The photovoltaic connection mechanism includes an upper pressure plate 2, a lower pressure plate 3, and a connector 4 connecting the two pressure plates. The left and right side walls of the connector 4, together with the upper pressure plate 2 and the lower pressure plate 3, form two independent slots 5. The ends of the photovoltaic modules 1 are inserted into these slots 5. Sealant (silicone sealant in this embodiment) is applied to the joints between the photovoltaic modules 1 and the pressure plates to achieve a waterproof effect. The upper pressure plate 2 has a structure that is thicker in the middle and thinner at the edges. The upper surface on the left side has a wedge-shaped structure, which forms a triangular structure with the lower surface of the upper pressure plate. This facilitates the smooth transition of rainwater and cleaning water from the photovoltaic modules 1 to the upper pressure plate 2 and continues to flow downwards, while preventing dust and impurities from accumulating there and affecting power generation efficiency.

[0028] A drainage channel 6 is formed on the inner bottom surface of slot 5 on the left side, along the axial direction of the lower pressure plate 3. This drainage channel 6 serves as a final waterproofing mechanism when leakage occurs due to connection problems between the photovoltaic connection mechanism and the photovoltaic module 1 during long-term use. Since connection problems between the photovoltaic connection mechanism and the photovoltaic module 1 are mostly localized and involve small points of loose connection, the leakage is relatively small. Therefore, the width of the drainage channel 6 is 1cm-1.5cm, and the depth is 0.8cm-1.5cm. The drainage channel 6 has an outlet, which can be located on the end face of the lower pressure plate 3, allowing water to be discharged directly through the end face of the lower pressure plate 3. To prevent insects, leaves, etc., from entering the drainage channel 6 and causing blockage, a protective net is installed at the outlet.

[0029] In addition, such as Figure 1 As shown, multiple branch outlets 7 can also be provided along the length of the lower pressure plate 3. Each branch outlet 7 is connected to the support frame, and the water is discharged into the drainage system inside the building through the support frame. Specifically, the support frame includes a horizontal beam 9, a longitudinal beam 10, and a support column 11 (this is the prior art) connected sequentially from top to bottom. The support column 11 has a hollow structure inside and a drainage pipe 8 is provided inside the support column 11. One end of the drainage pipe 8 is connected to the branch outlet 7 through a connector, and the other end is connected to the drainage system inside the building, so as to discharge the water in a unified manner.

[0030] In actual installation, this photovoltaic connection mechanism is mainly used to connect the upper and lower photovoltaic modules 1. Therefore, the photovoltaic connection mechanism is horizontally installed on the support frame, with one slot 5 of the drainage channel 6 facing the upper photovoltaic module 1. During long-term use, if the connection between the photovoltaic connection mechanism and the photovoltaic module 1 fails and leaks, such as the sealant failing due to prolonged exposure to sunlight or hardening and cracking, rainwater will enter the drainage channel 6 from the cracks during heavy rain and be discharged into the building's drainage system through the branch outlet 7. In this way, on the one hand, if the lower pressure plate 3 and the photovoltaic module 1 also leak, it prevents rainwater from dripping directly into the room from the lower pressure plate 3. On the other hand, if the lower pressure plate 3 and the photovoltaic module 1 do not have connection problems, rainwater will accumulate between the photovoltaic connection mechanism and the photovoltaic module 1 for a long time, which will accelerate the aging of the photovoltaic module 1.

[0031] During installation, to ensure a tight connection between the two pressure plates and photovoltaic module 1 for better waterproofing, the spacing between the two pressure plates is almost the same as the thickness of photovoltaic module 1. This makes installation of photovoltaic module 1 difficult and prone to scratching. Therefore, to address this issue, this solution incorporates the following design for the photovoltaic connection mechanism:

[0032] One structure is as follows: Figures 2-4 As shown, a groove 41 is formed through the upper end face of the connector 4 along its axial direction. Two sliding grooves 43 and two locking grooves 42 are respectively provided on both sides of the groove 41. The locking grooves 42 are located below the sliding grooves 43. A sliding block 21 is fixedly installed on the lower surface of the upper pressure plate 2. Both sides of the sliding block 21 have locking protrusions 22 for engaging with the locking grooves 42. The distance between the locking protrusions 22 and the upper pressure plate 2 is the same as the distance between the locking grooves 42 and the upper surface of the connector 4. Thus, when the locking grooves 42 and the locking protrusions 22 engage, the lower surface of the upper pressure plate 2 and the upper surface of the connector 4 are fully fitted, providing mutual support. The outer contour of the locking protrusions 22 is arc-shaped, and the position of the connector 4 between the locking grooves 42 and the sliding grooves 43 is rounded. This structural design allows the locking protrusions 22 to smoothly enter the locking grooves 42 when they slide to the end point in the sliding grooves 43 by striking the upper pressure plate 2. To facilitate the rapid sliding of the protrusion 22 within the groove 43 and improve construction efficiency, the size of the groove 43 is larger than that of the protrusion 22.

[0033] During actual installation, after installing the lower pressure plates 3 and connectors 4 on the support frame, each photovoltaic module 1 is installed in the corresponding slot 5. After all photovoltaic modules 1 are laid, the locking protrusion 22 of the upper pressure plate 2 is pushed from one end to the other end along the sliding groove 43 of the connector 4. Since the sliding groove 43 is located above the locking slot 42, the upper pressure plate 2 will not contact the photovoltaic module 1 when the locking protrusion 22 slides in the sliding groove 43, thus preventing scratches or wear. When the upper pressure plate 2 slides to the designated position, the locking protrusion 22 is moved from the sliding groove 43 to the locking slot 42 by tapping the upper pressure plate 2, thereby achieving a fixed connection between the upper pressure plate 2 and the connector 4, and tightly fixing the photovoltaic module 1 between the two pressure plates.

[0034] Another structure is: such as Figure 5 , Figure 6 As shown, a positioning groove is provided on the upper surface of the connector 4, and a positioning block corresponding to the positioning groove is provided on the lower surface of the upper pressure plate 2. The thickness of the positioning block does not exceed the depth of the positioning groove. The upper pressure plate 2 and the connector 4 are connected by bolts or screws 12. In actual installation, after the upper pressure plate 2 is initially positioned with the connector 4 by the positioning block and positioning groove, the two are fastened together by bolts.

[0035] The second structure is simpler than the first, but it is more complicated to install and takes longer, requiring a large number of bolts or screws 12 to connect. The first structure only requires two steps: sliding the upper pressure plate 2 to the designated position and then tapping the upper pressure plate 2 to complete the installation.

[0036] In addition, depending on the site environment or actual conditions, such as in areas with seasonal strong winds, the two structures can be combined. That is, based on the first structure, several screws 12 can be installed on the upper pressure plate 2 and the connecting piece 4 to improve the stability between the two.

[0037] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A waterproof structure based on a building-integrated photovoltaic system, characterized in that: The device includes photovoltaic modules, a photovoltaic connection mechanism for connecting the photovoltaic modules, and a support frame for supporting the photovoltaic connection mechanism. The photovoltaic connection mechanism includes an upper pressure plate, a lower pressure plate, and a connector connected between the two pressure plates. The two side walls of the connector form two independent slots with the upper pressure plate and the lower pressure plate, respectively. The photovoltaic modules are connected in the slots, and the joint between them is sealed with sealant. A drainage channel is opened on the inner bottom surface of one slot along the axial direction of the photovoltaic connection mechanism, and a water outlet is provided on the drainage channel.

2. The waterproof structure based on a building-integrated photovoltaic system according to claim 1, characterized in that: The upper pressure plate is detachably connected to the connector.

3. A waterproof structure based on a building-integrated photovoltaic system according to claim 2, characterized in that: The upper end face of the connector has a groove extending through it along its axial direction. The side of the groove has a sliding groove and a locking groove respectively. The locking groove is located below the sliding groove. The lower surface of the upper pressure plate has a sliding block. The side of the sliding block has a locking protrusion for engaging with the locking groove.

4. A waterproof structure based on a building-integrated photovoltaic system according to claim 3, characterized in that: The spacing between the protrusion and the upper pressure plate is the same as the spacing between the slot and the upper surface of the connector.

5. A waterproof structure based on a building-integrated photovoltaic system according to claim 4, characterized in that: The outer contour of the card protrusion is arc-shaped, and the connecting piece located between the card groove and the sliding groove has a rounded structure.

6. A waterproof structure based on a building-integrated photovoltaic system according to claim 2, characterized in that: The upper surface of the connector is provided with a positioning groove, and the lower surface of the upper pressure plate is provided with a positioning block corresponding to the positioning groove. The upper pressure plate and the connector are connected by screws.

7. A waterproof structure based on a building-integrated photovoltaic system according to claim 5 or 6, characterized in that: The support frame includes horizontal beams, vertical beams and support columns connected in sequence from top to bottom. The support columns have a hollow structure inside and are equipped with drainage pipes leading to the building's drainage system.

8. A waterproof structure based on a building-integrated photovoltaic system according to claim 7, characterized in that: The width of the drainage channel is 1cm-1.5cm and the depth is 0.8cm-1.5cm.

9. A waterproof structure based on a building-integrated photovoltaic system according to claim 8, characterized in that: The upper surface of the upper pressure plate is a wedge-shaped surface, which forms a triangular structure with the lower surface of the upper pressure plate.

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