Photovoltaic device

Abstract

This application discloses a photovoltaic device installed on a building roof. The upper surface of the building roof forms multiple raised strips. The photovoltaic device includes a support bracket, a photovoltaic array, and an assembly mechanism. The support bracket includes a connecting mechanism and a support frame. Each connecting mechanism includes a connecting body and a locking structure. The connecting body forms a slot, and the connecting mechanism is assembled to the building roof by engaging the raised strips with the slot. The support frame includes multiple sets of first support components spaced apart along the height of the building roof. Each set of first support components forms an upward-opening first water guide channel along its length. At both ends of the first support component along its length, drainage outlets communicating with the first water guide channels are formed. Rainwater flowing into the first water guide channels is discharged from the first support component through the drainage outlets.

Description

Technical Field

[0001] This application relates to the field of photovoltaic power generation technology, and in particular to photovoltaic devices. Background Technology

[0002] Solar cells, known in physics as photovoltaics, are thin-film photovoltaic (PV) solar panels that directly generate electricity using sunlight. They are photovoltaic semiconductors that can instantly output voltage and, in the presence of a circuit, generate current when the illumination conditions are met. Due to the large surface area and long hours of sunlight on rooftops, factories and commercial buildings have become important locations for PV systems. In my country, many factories use corrugated steel roofing sheets as the primary building material, requiring PV panels to be installed on these sheets using mounting brackets. However, these brackets are often secured to the steel roofing sheets with screws and other fasteners. These fasteners can damage the anti-corrosion layer of the steel roofing sheets, allowing rainwater to seep through the gaps between the PV panels and gradually corrode the sheets, leading to leaks, rust, and other problems. Subsequent roof repairs require the removal of the PV panels, significantly increasing maintenance and installation costs and hindering the widespread adoption of PV technology. Utility Model Content

[0003] To address the aforementioned technical problems and achieve at least one advantage of this application, this application provides a photovoltaic device installed on a building roof, wherein the upper surface of the building roof forms multiple spaced and parallel raised strips, and the photovoltaic device includes:

[0004] The support bracket includes multiple spaced-apart connecting mechanisms and a support frame. Each connecting mechanism includes a connecting body and a locking structure. The connecting body forms a slot that is adapted to the shape and size of the protrusion. The connecting mechanism is assembled to the roof of the building by engaging the slot with the protrusion. The locking structure is installed on the connecting body. The support frame includes multiple sets of first support components spaced apart along the height direction of the roof. Each first support component has a preset length, and each set of first support components forms an upward-facing first water guide channel along its own length direction. Both ends of the first support component along its length direction form drainage outlets communicating with the first water guide channels. The first support components overlap the connecting body, and the locking structure presses down on the first support components during the process of fixing them to the connecting body.

[0005] A photovoltaic array, comprising at least one photovoltaic panel, wherein the photovoltaic panel is attached to the support frame such that its two opposite sides, parallel to its own length direction, respectively form the first water channel for each of the two adjacent groups of the first support components.

[0006] An assembly mechanism is connected to the first support assembly and partially overlaps the upper surface of the photovoltaic panel. During the process of fixing the photovoltaic panel to the first support assembly, the photovoltaic panel is pressed down, and the photovoltaic panel is fixed to the support frame through the assembly mechanism.

[0007] According to one embodiment of this application, the connecting body includes a connecting body and an extension. The connecting body forms the slot, and the extension is connected to the connecting body. At least a portion of the extension extends a predetermined length along a horizontal plane direction perpendicular to the extension direction of the slot to form an assembly. The first support component overlaps the upper surface of the assembly.

[0008] According to one embodiment of this application, the first support component includes a plurality of first support members. The first support members form the first water guide channel and the first assembly groove with the opening facing downward. Both ends of the first support members in the length direction form connection ports communicating with the first assembly groove. The plurality of first support members included in each group of the first support components are connected end to end in sequence, and the plurality of first support members included in each group of the first support components together form the first water guide channel.

[0009] According to one embodiment of this application, each group of the first support components further includes at least one connector, the connector forming a mounting groove, and one end of each of the two first support components that are opposite to each other is mounted in the mounting groove.

[0010] According to one embodiment of this application, the connector forms a sliding protrusion, which is slidably inserted into the first assembly groove through the connection port.

[0011] According to one embodiment of this application, the locking structure includes a locking screw and a nut, wherein the locking screw includes a shank and a head, one end of the shank expands radially to form the head, the mounting portion forms a through hole, the shank of the locking screw passes through the through hole and is threadedly connected to the nut, the head is located in the length direction of the first support assembly, and the head can extend into the first mounting groove through the connection port, and when the shank moves in the direction fixed to the connecting body, the head presses down on the first support assembly.

[0012] According to one embodiment of this application, the support frame includes at least one group of second support members, each group including multiple spaced second support members, each second support member forming a second water guide channel, the second support member being perpendicularly connected to the first support member, one group of second support members being disposed between two adjacent groups of first support members, and the second water guide channels formed by all the second support members in each group being connected to the first water guide channels formed by the two adjacent groups of first support members, and each of the photovoltaic panels having two opposite sides parallel to its own width direction forming a second water guide channel corresponding to two adjacent second support members in the same group.

[0013] According to one embodiment of this application, the first support member further forms a second assembly groove and a communication port communicating with the second assembly groove. The assembly mechanism includes a limiting body and a locking structure. The limiting body retains a portion that overlaps the upper surface of the photovoltaic panel. The locking structure includes a locking screw and a locking member. The shank of the locking screw passes through the limiting body and is threadedly connected to the locking member. The width of the locking member is smaller than the distance between the portions of the first support member forming the communication port, and the length of the locking member is greater than the distance between the portions of the first support member forming the communication port. The locking member is inserted into the second assembly groove from the communication port with its own length direction parallel to the length direction of the first support member. After the locking member moves into the second assembly groove, the locking structure is rotated so that the length direction of the locking member is perpendicular to the length direction of the first support member. When the locking screw moves in the direction of screwing into the locking member, the locking screw drives the limiting body to move downward, causing the limiting body to press down on the photovoltaic panel.

[0014] According to one embodiment of this application, the limiting body forms a connecting portion and at least one overlapping portion, the overlapping portion being formed by extending from the connecting portion, and the rod portion of the locking screw passing through the connecting portion.

[0015] According to one embodiment of this application, the displacement limiting body forms two oppositely distributed overlapping portions, and the two overlapping portions formed by the displacement limiting body respectively overlap the upper surface of two adjacent photovoltaic panels. The mounting portion is recessed downward to form a hidden groove. The photovoltaic device also includes a cover plate, the cover plate including a shielding portion and an insertion portion formed on the lower surface of the shielding portion. The cover plate is assembled with the displacement limiting body in such a way that the insertion portion is inserted into the hidden groove and the shielding portion partially overlaps the upper surface of two adjacent photovoltaic panels. Attached Figure Description

[0016] Figure 1 A diagram illustrating a usage scenario of the photovoltaic device described in this application is shown.

[0017] Figure 2It shows Figure 1 Enlarged view of the structure of part A in the middle.

[0018] Figure 3 An exploded view of the connection mechanism structure described in this application is shown.

[0019] Figure 4 An exploded view of the structure of the first support component of this application is shown.

[0020] Figure 5 A partial structural application scenario diagram of the photovoltaic device described in this application is shown.

[0021] Figure 6 It shows Figure 1 A cross-sectional view at an angle.

[0022] Figure 7 It shows Figure 6 Enlarged view of the structure of section B.

[0023] Figure 8 It shows Figure 7 Enlarged view of the structure of section C. Detailed Implementation

[0024] The following description is intended to disclose this application and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of this application defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of this application.

[0025] Those skilled in the art should understand that, in the disclosure of this application, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this application.

[0026] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0027] refer to Figures 1 to 8A photovoltaic device according to a preferred embodiment of this application will be described in detail below. The photovoltaic device is installed on a building roof 900, wherein a plurality of spaced and parallel raised strips 910 are formed on the upper surface of the building roof 900. Preferably, the building roof 900 is inclined.

[0028] The photovoltaic device includes a support bracket 10, a photovoltaic array 20, and an assembly mechanism 30.

[0029] Specifically, the support bracket 10 includes a plurality of spaced-apart connecting mechanisms 11 and a support frame 12.

[0030] Each of the connecting mechanisms 11 includes a connecting body 111 and a locking structure 112. The connecting body 111 forms a slot 11101, which is adapted to the shape and size of the protrusion 910. The connecting mechanism 11 is assembled to the building roof 900 by engaging the slot 11101 with the protrusion 910. The locking structure 112 is installed on the connecting body 111.

[0031] The support frame 12 includes multiple sets of first support components 121 spaced apart along the height direction of the building roof 900. Each first support component 121 has a preset length, and each set of first support components 121 forms an upward-facing first water guide channel 12101 along its length. Drainage outlets 12102, communicating with the first water guide channels 12101, are formed at both ends of the first support component 121 along its length. Rainwater flowing into the first water guide channels 12101 is discharged from the first support component 121 through the drainage outlets 12102. The first support component 121 overlaps with the connecting body 111. During the process of the locking structure 112 fixing to the connecting body 111, the first support component 121 is pressed down, so that the connecting body 111 and the locking structure 112 cooperate to fix the first support component 121.

[0032] The photovoltaic array 20 includes at least one photovoltaic panel 21. The photovoltaic panel 21 is attached to the support frame 12 such that its opposite sides, parallel to its length, respectively form the first water channel 12101 corresponding to each of the two adjacent sets of the first support components 121. This allows rainwater flowing over the surface of the photovoltaic panel 21 to flow into the first water channel 12101 formed by the first support components 121, and then discharge from the drain outlet 12102, preventing rainwater from flowing to the connection point between the building roof 900 and the connecting mechanism 11, thereby preventing water seepage and corrosion of the building roof 900. The assembly mechanism 30 is connected to the first support component 121, and the assembly mechanism 30 partially overlaps the upper surface of the photovoltaic panel 21. During the process of fixing the assembly mechanism 30 to the first support component 121, the photovoltaic panel 21 is pressed down, thereby fixing the photovoltaic panel 21 to the support frame 12 through the assembly mechanism 30.

[0033] Preferably, the photovoltaic array 20 is laid on the support bracket 10 in an orientation parallel to the plane of the building roof 900. All parts of each group of the first support components 121 are at the same horizontal height to improve the stability of the photovoltaic device.

[0034] In one embodiment, the connecting body 111 includes a connecting main body 1111 and an extension 1112, wherein the connecting main body 1111 forms the slot 11101. The extension 1112 is connected to the connecting main body 1111, wherein at least a portion of the extension 1112 extends a predetermined length along a horizontal plane direction perpendicular to the extension direction of the slot 11101 to form an assembly portion 11121, and the first support component 121 overlaps the upper surface of the assembly portion 11121.

[0035] Preferably, after the connecting mechanism 11 is assembled to the building roof 900 by engaging the slot 11101 with the protrusion 910, two sets of fasteners respectively penetrate the two opposite sidewalls of the connecting body 1111 to form the slot 11101 and are threaded onto the protrusion 910, thereby fixing the connecting mechanism 11 to the building roof 900. As an example, the fasteners can be implemented as self-drilling screws.

[0036] Preferably, the connecting mechanism 11 further includes a sealing gasket 113, which is installed on the two opposite sidewalls of the connecting body 1111 that form the slot 11101. After the connecting body 111 is connected to the protrusion 910 by fasteners, the sealing gasket 113 seals the connection between the fasteners and the protrusion 910, preventing rainwater from seeping into the connection between the fasteners and the protrusion 910, thereby improving the overall waterproofness.

[0037] As an example, the sealing gasket 113 is made of rubber material.

[0038] Preferably, the first support assembly 121 includes at least one first support member 1211, which forms the first water guide channel 12101 and a first assembly groove 121101 with its opening facing downward. Both ends of the first support member 1211 in the length direction form connection ports 121102 that communicate with the first assembly groove 121101.

[0039] Preferably, a group of first support components 121 includes multiple first support members 1211. It is understood that the length of the first support component 121 can be adjusted by changing the number of first support members 1211 in each group. The multiple first support members 1211 in each group of first support components 121 are connected end-to-end, so that the multiple first support members 1211 in each group of first support components 121 together form the first water guide channel 12101.

[0040] In one embodiment, each set of first support components 121 further includes at least one connector 1212. The connector 1212 forms a mounting groove 121201. One opposite end of each of the two end-to-end first support components 1211 is mounted in the mounting groove 121201. Preferably, one opposite end of each of the two end-to-end first support components 1211 is fixedly mounted to the connector 1212 by fasteners; for example, the fasteners are rivets.

[0041] Preferably, the first support assembly 121 further includes at least one waterproof pad 1213, which is installed on the inner wall of the connector 1212 forming the mounting groove 121201. In this way, the waterproof pad 1213 is located between the connector 1212 and the two first support members 1211 assembled in the mounting groove 121201, so as to prevent rainwater from leaking from the connection between the first support member 1211 and the connector 1212 to the building roof 900, thereby further improving the overall waterproofness.

[0042] As an example, the waterproof pad 1213 is made of rubber material.

[0043] Preferably, the connector 1212 forms a sliding protrusion 12121, which is slidably inserted into the first assembly groove 121101 through the connection port 121102, so as to adjust the position between the first support member 1211 and the connector 1212 before the connector 1212 and the first support member 1211 are fixed by fasteners, so as to facilitate the actual installation by the staff.

[0044] It is worth mentioning that the opposing end faces of the two first support members 1211 that are connected end to end are coated with waterproof adhesive, so that the two first support members 1211 that are connected end to end are glued together by the waterproof adhesive. After the waterproof adhesive dries, it can improve the waterproofness of the joint of the two first support members 1211, prevent water from seeping into the joint of the two first support members 1211, and improve the service life of the first support assembly 121.

[0045] Preferably, the locking structure 112 includes a locking screw 1121, wherein the locking screw 1121 includes a rod 11211 and a head 11212, one end of the rod 11211 expanding radially to form the head 11212. The mounting portion 11121 forms a through hole 111201, and the rod 11211 of the locking screw 1121 is mounted in the through hole 111201. The head 11212 is located in the longitudinal direction of the first support assembly 121, and the head 11212 can extend into the first mounting groove 121101 through the connecting port 121102. When the rod 11211 moves in a direction fixed to the connecting body 111, the head 11212 presses down on the first support assembly 121, thereby the connecting body 111 and the head 11212 cooperatively fix the first support assembly 121.

[0046] In one embodiment, the assembly part 11121 forms an internal thread on the inner wall of the through hole 111201, and the rod body 11211 is threadedly installed on the through hole 111201.

[0047] In another embodiment, the locking structure 112 further includes a nut 1122, and the rod 11211 is threadedly connected to the nut 1122 after passing through the through hole 111201.

[0048] Preferably, the through hole 111201 is implemented as a waist-shaped hole, and the locking screw 1121 can move within the waist-shaped hole in a direction parallel to the extending direction of the slot 11101 to adjust the position of the locking screw 1121 so that the head 11212 of the locking screw 1121 is aligned with the connection port 121102, so that the head 11212 can extend into the first assembly slot 121101 through the connection port 121102, which is convenient for the operator to install.

[0049] Preferably, the photovoltaic array 20 includes multiple photovoltaic panels 21, which are arranged in a rectangular array.

[0050] Further, the support frame 12 includes at least one set of second support members 122, each set including multiple spaced-apart second support members 122. Each second support member 122 forms a second water guide channel 12201. The second support member 122 is perpendicularly connected to the first support member 1211. A set of second support members 122 is disposed between two adjacent sets of first support components 121, and the second water guide channels 12201 formed by all the second support members 122 in each set are connected to the first water guide channels 12101 formed by the two adjacent sets of first support components 121. Each photovoltaic panel 21 has two opposite sides parallel to its own width direction, each corresponding to two adjacent second support members 122 in the same set, forming a second water guide channel 12201.

[0051] It is worth mentioning that the first support member 1211 also forms a second assembly groove 121103 and a communication port 121104 communicating with the second assembly groove 121103.

[0052] Specifically, the assembly mechanism 30 includes a limiting body 31 and a locking structure 32. The limiting body 31 partially overlaps the upper surface of the photovoltaic panel 21. The locking structure 32 includes a locking screw 321 and a locking member 322. The rod of the locking screw 321 passes through the limiting body 31 and is threadedly connected to the locking member 322. The width of the locking member 322 is less than the spacing between the portions of the first support member 1211 forming the communication opening 121104, and the length of the locking member 322 is greater than the spacing between the portions of the first support member 1211 forming the communication opening 121104. The locking member 322 is inserted into the second assembly slot 121103 from the communication opening 121104 with its length direction parallel to the length direction of the first support member 1211. After the locking member 322 moves into the second assembly slot 121103, the locking structure 32 is rotated so that the length direction of the locking member 322 is perpendicular to the length direction of the first support member 1211, to prevent the locking member 322 from being pulled out of the second assembly slot 121103 from the communication port 121104. When the locking screw 321 moves in the direction of screwing into the locking member 322, the locking screw 321 drives the limiting body 31 to move downward, so that the limiting body 31 presses down on the photovoltaic panel 21, so that the photovoltaic panel 21 is connected to the first support assembly 121 through the assembly mechanism 30.

[0053] Preferably, the limiting body 31 forms a connecting portion 311 and at least one overlapping portion 312, the overlapping portion 312 being formed by extending from the connecting portion 311, and the rod portion of the locking screw 321 passing through the connecting portion 311.

[0054] refer to Figure 7 In one embodiment, the displacement limiting body 31 forms an overlapping portion 312, and the displacement limiting body 31 overlaps the upper surface of the photovoltaic panel 21.

[0055] refer to Figure 8 In another embodiment, the displacement limiting body 31 forms two oppositely distributed overlapping portions 312, and the two overlapping portions 312 formed by the displacement limiting body 31 overlap the upper surfaces of two adjacent photovoltaic panels 21 in two rows, so that the assembly mechanism 30 can fix two photovoltaic panels 21 at the same time, thereby saving installation costs.

[0056] Preferably, the mounting portion 311 is recessed downward to form a hidden groove 31101. The photovoltaic device also includes a cover plate 40, which includes a shielding portion 41 and an insertion portion 42 formed on the lower surface of the shielding portion 41. The cover plate 40 is assembled with the displacement limiting body 31 such that the insertion portion 42 is inserted into the hidden groove 31101 and the shielding portion 41 partially overlaps the upper surfaces of two adjacent photovoltaic panels 21, so as to reduce rainwater entering the hidden groove 31101 and thus prevent the locking screw 321 and the locking member 322 from rusting.

[0057] Those skilled in the art should understand that the embodiments of this application described above and shown in the accompanying drawings are merely examples and do not limit the scope of this application. The advantages of this application have been fully and effectively implemented. The functional and structural principles of this application have been demonstrated and explained in the embodiments, and any variations or modifications can be made to the implementation of this application without departing from the stated principles.

Claims

1. A photovoltaic device, said photovoltaic device being installed on the roof of a building, wherein the upper surface of said building roof forms a plurality of spaced and parallel raised strips, characterized in that, The photovoltaic device includes: The support bracket includes multiple spaced-apart connecting mechanisms and a support frame. Each connecting mechanism includes a connecting body and a locking structure. The connecting body forms a slot that is adapted to the shape and size of the protrusion. The connecting mechanism is assembled to the roof of the building by engaging the slot with the protrusion. The locking structure is installed on the connecting body. The support frame includes multiple sets of first support components spaced apart along the height direction of the roof. Each first support component has a preset length, and each set of first support components forms an upward-facing first water guide channel along its own length direction. Both ends of the first support component along its length direction form drainage outlets communicating with the first water guide channels. The first support components overlap the connecting body, and the locking structure presses down on the first support components during the process of fixing them to the connecting body. A photovoltaic array, comprising at least one photovoltaic panel, wherein the photovoltaic panel is attached to the support frame such that its two opposite sides, parallel to its own length direction, respectively form the first water channel for each of the two adjacent groups of the first support components. An assembly mechanism is connected to the first support assembly and partially overlaps the upper surface of the photovoltaic panel. During the process of fixing the photovoltaic panel to the first support assembly, the photovoltaic panel is pressed down, and the photovoltaic panel is fixed to the support frame through the assembly mechanism.

2. The photovoltaic device of claim 1, wherein, The connecting body includes a connecting body and an extension. The connecting body forms the slot, and the extension is connected to the connecting body. At least a portion of the extension extends a predetermined length along a horizontal plane direction perpendicular to the extension direction of the slot to form an assembly. The first support component overlaps the upper surface of the assembly.

3. The photovoltaic device according to claim 2, characterized in that, The first support assembly includes multiple first support members. The first support members form the first water guide channel and the first assembly groove with the opening facing downward. Both ends of the first support members in the length direction form connection ports that communicate with the first assembly groove. The multiple first support members included in each group of the first support assembly are connected end to end in sequence, and the multiple first support members included in each group of the first support assembly together form the first water guide channel.

4. The photovoltaic device according to claim 3, characterized in that, Each set of the first support components also includes at least one connector, which forms a mounting groove, and one end of each of the two first support components that are opposite each other is mounted in the mounting groove.

5. The photovoltaic device of claim 4, wherein, The connector forms a sliding protrusion, which is slidably inserted into the first assembly groove through the connection port.

6. The photovoltaic device of claim 5, wherein, The locking structure includes a locking screw and a nut, wherein the locking screw includes a shank and a head, one end of the shank expands radially to form the head, the mounting portion forms a through hole, the shank of the locking screw passes through the through hole and is threadedly connected to the nut, the head is located in the length direction of the first support assembly, and the head can extend into the first mounting slot through the connection port, and when the shank moves in the direction fixed to the connecting body, the head presses down on the first support assembly.

7. The photovoltaic device according to claim 6, characterized in that, The support frame includes at least one set of second support members, each set including multiple spaced second support members, each second support member forming a second water guide channel, the second support members being perpendicularly connected to the first support members, one set of second support members being disposed between two adjacent sets of first support components, and the second water guide channels formed by all the second support members in each set being connected to the first water guide channels formed by the two adjacent sets of first support components, and each of the photovoltaic panels having two opposite sides parallel to its own width direction forming a second water guide channel corresponding to two adjacent second support members in the same set.

8. The photovoltaic device of claim 7, wherein, The first support member also forms a second assembly groove and a communication port communicating with the second assembly groove. The assembly mechanism includes a limiting body and a locking structure. The limiting body retains a portion that overlaps the upper surface of the photovoltaic panel. The locking structure includes a locking screw and a locking member. The shank of the locking screw passes through the limiting body and is threadedly connected to the locking member. The width of the locking member is smaller than the distance between the portions of the first support member forming the communication port, and the length of the locking member is greater than the distance between the portions of the first support member forming the communication port. The locking member is inserted into the second assembly groove from the communication port with its length direction parallel to the length direction of the first support member. After the locking member moves into the second assembly groove, the locking structure is rotated so that the length direction of the locking member is perpendicular to the length direction of the first support member. When the locking screw moves in the direction of screwing into the locking member, the locking screw drives the limiting body to move downward, causing the limiting body to press down on the photovoltaic panel.

9. The photovoltaic device of claim 8, wherein, The limiting body forms a connecting portion and at least one overlapping portion, the overlapping portion being an extension of the connecting portion, and the rod portion of the locking screw passing through the connecting portion.

10. The photovoltaic device according to claim 9, characterized in that, The displacement limiting body forms two oppositely distributed overlapping portions, and the two overlapping portions formed by the displacement limiting body overlap the upper surface of two adjacent photovoltaic panels in two rows respectively. The mounting portion is recessed downward to form a hidden groove. The photovoltaic device also includes a cover plate, which includes a shielding portion and an insertion portion formed on the lower surface of the shielding portion. The cover plate is assembled with the displacement limiting body in such a way that the insertion portion is inserted into the hidden groove and the shielding portion partially overlaps the upper surface of two adjacent photovoltaic panels.

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