A photovoltaic unit and system for a photovoltaic canopy

Abstract

The utility model discloses a kind of photovoltaic unit and system of superimposed photovoltaic carport, including photovoltaic module (101), left frame (102), right frame (103) and bottom frame (104);The side end of the bottom frame (104) has extension for supporting photovoltaic module (101), the other side end of the bottom frame (104) is provided with first interface slot (1041), first interface slot (1041) installs trapezoidal adhesive tape (105), the upper end surface of the bottom frame (104) is provided with second interface slot (1042);Further including adapter (106) and hanger (109), one end of the adapter (106) is connected with the second interface slot (1042), the other end of the adapter (106) is slidably connected with the hanger (109).The utility model is characterized in that the structure of left and right frame is used, water channel material is saved, waterproof performance is improved, modular installation is simultaneously used, installation efficiency is improved, safety hidden danger in worker construction process is reduced, the integrity of component is also ensured, installation difficulty is also reduced, material is saved simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaics, mainly applied in carports and related fields, specifically a photovoltaic unit and system for a superimposed photovoltaic carport. Background Technology

[0002] Currently, most photovoltaic carports on the market are installed using a water channel system, with channels running downhill and collection channels running laterally. Photovoltaic modules are installed using aluminum alloy clamps. However, this existing technology has the following shortcomings: The installation design with a water channel poses a risk of leakage when there is excessive rain.

[0003] The installation design of the water guide channel is relatively complicated. It requires first installing the water guide channel on the steel purlin, then installing the water collection channel horizontally, and then installing the components, which is time-consuming and labor-intensive.

[0004] During component installation, workers need to step on the components to carry out the installation work, which poses risks such as hidden cracks and damage to the components.

[0005] Therefore, there is an urgent need to develop an integrated design of water channel and photovoltaic unit for stacked photovoltaic carports, which can be adapted to different photovoltaic modules, simplify the installation process for workers, and improve safety. Utility Model Content

[0006] This utility model provides a photovoltaic unit and system for a stacked photovoltaic carport, which is mainly used in carports and other facilities. The photovoltaic unit is composed of photovoltaic modules and photovoltaic frames. The stacked installation design of the photovoltaic unit enables convenient installation and individual disassembly, while saving materials for water guide channels and water collection channels, and improving waterproof performance.

[0007] One technical solution adopted by this utility model is: A photovoltaic unit for a superimposed photovoltaic carport includes a photovoltaic module, a left frame, a right frame, and a bottom frame; One side of the bottom frame has an extension for supporting the photovoltaic module, and the other side of the bottom frame has a first interface groove for installing a trapezoidal adhesive strip. The upper surface of the bottom frame has a second interface groove. It also includes an adapter and a hanger, one end of the adapter is connected to the second interface slot, and the other end of the adapter is slidably connected to the hanger.

[0008] The adapter consists of a connector and T-shaped components that are offset from each other on both sides of the connector, with the two T-shaped components facing each other. The pendant includes an L-shaped pendant part and a T-shaped groove at one end of the L-shaped pendant part; the L-shaped pendant part includes a first pendant part and a second pendant part; the first pendant part has a T-shaped limiting groove; and an elongated rubber strip is installed in the T-shaped limiting groove. One end of the adapter is connected to the second interface groove, and the other end of the adapter is slidably connected to the T-shaped groove of the hanger. The second hanger part of the L-shaped hanger is fixed to the purlin of the ceiling.

[0009] The first interface groove is a trapezoidal groove, and the trapezoidal rubber strip has an arc-shaped protrusion on the side away from the first interface groove, and the two ends of the arc-shaped protrusion have antennae.

[0010] The second interface groove is a T-shaped groove, and one end of the adapter is fitted into the second interface groove; the other end of the adapter is connected to one end of the hanger; the other end of the hanger is fixed to the purlin of the ceiling.

[0011] The left frame includes a corner code slot, which includes a raised sidewall and a smooth sidewall opposite to the raised sidewall; The smooth sidewall extends upward to form a left mounting groove, and the smooth sidewall extends downward to form a left overlap; The right frame includes a corner code slot, which includes a raised sidewall and a smooth sidewall opposite to the raised sidewall. The smooth sidewall extends upward to form a right mounting groove, and the smooth sidewall extends upward to form a right lap joint; The openings of the left mounting slot and the right mounting slot face the side of the protruding sidewall; The opening of the left overlap member faces upward, and the opening of the right overlap member faces downward.

[0012] The left frame is fixedly connected to the bottom frame by a core; the right frame is fixedly connected to the bottom frame by a core.

[0013] The insert is L-shaped, and the two ends of the insert are insert portions.

[0014] The protruding sidewall of the corner code slot is provided with serrations, and both of the insert parts are provided with protrusions; The serrations and the protrusions interlock and fix the bottom frame to the left frame and the bottom frame to the right frame.

[0015] The left overlap is L-shaped, and the right overlap is an inverted L-shaped piece that matches the left overlap.

[0016] The device includes a photovoltaic frame, in which the photovoltaic module is built-in; the left edge of the photovoltaic module is placed in the left mounting slot of the left frame, the right edge of the photovoltaic module is placed in the right mounting slot of the right frame, and the lower edge of the photovoltaic module is placed on the extension of the bottom frame.

[0017] A photovoltaic system for a stacked photovoltaic carport, wherein the roof is provided with multiple purlins evenly spaced in multiple rows and columns, and each purlin is fixed with a photovoltaic unit for the stacked photovoltaic carport; the roof is inclined from low to high. The photovoltaic units for the stacked photovoltaic carport are sequentially fixedly installed from the first purlin in the lowest row. When the photovoltaic units of the stacked photovoltaic carport are overlapped, the left overlap and the right overlap are interlocked. The second hanging part of the photovoltaic unit for the stacked photovoltaic carport is fixed to the purlin by screws to form a row of first photovoltaic unit modules. The upper end of the first photovoltaic unit module overlaps the purlin. The photovoltaic units for the stacked photovoltaic carport are sequentially fixedly installed on the first purlin of the second row. When the photovoltaic units of the stacked photovoltaic carport are overlapped on the left and right, the left overlap member and the right overlap member are interlocked to form a row of second photovoltaic unit modules. The trapezoidal adhesive strip of the second photovoltaic unit module overlaps the upper surface of the first photovoltaic unit module, so that the lower end of the second photovoltaic unit module presses against the upper surface of the first photovoltaic unit module. The second hanging part of the second photovoltaic unit module is fixed to the purlin of the roof.

[0018] Compared with the prior art, the advantages of this utility model are that it improves installation efficiency through modular installation, strictly follows the construction technical manual, standardizes the operation process, can adapt to different photovoltaic modules, simplifies the installation process for workers, reduces safety hazards during construction, ensures the integrity of the modules, reduces installation difficulty, saves materials, and improves waterproof performance. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the specific embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a side view of the bottom frame of the photovoltaic unit used in the superimposed photovoltaic carport of this utility model.

[0021] Figure 2This is a schematic diagram of the bottom frame structure of the photovoltaic unit used in the superimposed photovoltaic carport of this utility model.

[0022] Figure 3 This is a schematic diagram of the left frame structure of the photovoltaic unit used in the superimposed photovoltaic carport of this utility model.

[0023] Figure 4 This is a schematic diagram of the right frame structure of the photovoltaic unit used in the superimposed photovoltaic carport of this utility model.

[0024] Figure 5 This is a schematic diagram of the insert structure of this utility model.

[0025] Figure 6 This is a schematic diagram of the photovoltaic unit used in the superimposed photovoltaic carport of this utility model.

[0026] Figure 7 This is a schematic diagram showing the overlap of the left and right frames of the photovoltaic unit used in the superimposed photovoltaic carport of this utility model.

[0027] Figure 8 for Figure 7 A magnified view of a portion of the image.

[0028] Figure 9 This is a schematic diagram of the photovoltaic system used in the superimposed photovoltaic carport of this utility model.

[0029] Figure 10 for Figure 9 A magnified view of a portion of the image.

[0030] Reference numerals: 101-Photovoltaic module, 102-Left frame, 1021-Left mounting slot, 1022-Left connector, 103-Right frame, 1031-Right mounting slot, 1032-Right connector, 104-Bottom frame, 105-Trapezoidal strip, 106-Adapter, 107-Intercalation core, 1071-Protrusion, 108-Corner slot, 1081-Serge, 109-Hanger, 1091-Long strip, 1092-T-shaped limiting slot, 201-Screw, 202-Purlin. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Examples of these preferred embodiments are illustrated in the drawings. The embodiments of this utility model shown in and described with reference to the drawings are merely exemplary, and this utility model is not limited to these embodiments.

[0032] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0033] Furthermore, in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] Example 1 like Figure 1-2 As shown, this embodiment provides a photovoltaic unit for a superimposed photovoltaic carport, including a photovoltaic module 101, a left frame 102, a right frame 103 and a bottom frame 104; The bottom frame 104 has an extension on one side to support the photovoltaic module 101, and a first interface groove 1041 on the other side. A trapezoidal adhesive strip 105 is installed in the first interface groove 1041. The trapezoidal adhesive strip 105 has an arc-shaped protrusion on the side away from the first interface groove 1041, with outwardly inclined antennae at both ends for attaching to the photovoltaic units of adjacent stacked photovoltaic carports. A second interface groove 1042 is formed on the upper surface of the bottom frame 104. It also includes an adapter 106 and a hanger 109. One end of the adapter 106 connects to the second interface groove 1042, and the other end of the adapter 106 is slidably connected to the hanger 109. The pre-installed adapter 106 and hanger 109 on the bottom frame facilitate installation, making construction more convenient, time-saving, labor-saving, and improving work efficiency.

[0035] like Figure 1-2As shown, the connector 106 consists of a connector and T-shaped components offset from each other on both sides of the connector. The two T-shaped components face each other. The hanger 109 consists of an L-shaped hanger portion and a T-shaped groove at one end of the L-shaped hanger portion. The L-shaped hanger portion includes a first hanger portion and a second hanger portion, wherein the first hanger portion has a T-shaped limiting groove 1092, and a long adhesive strip 1091 is installed in the T-shaped limiting groove 1092. In this embodiment, one end of the adapter 106 is connected to the second interface groove 1042, and the other end of the adapter 106 is slidably connected to the T-shaped groove of the hanger 109. The second hanger portion of the L-shaped hanger portion is fixed to the purlin 202 of the ceiling. The adapter 106 simplifies the packaging of the frame and facilitates transportation. Similarly, the hanger 109 can also be directly installed in the second interface groove 1042. By pre-setting the hanger 109, the installation process can be simplified, and assembly and disassembly can be facilitated. In this embodiment, the adapter 106 and the hanger 109 are made of aluminum alloy, the purlin 202 is made of steel purlin, and the long rubber strip 1091 and the trapezoidal rubber strip 105 are made of EPDM.

[0036] The trapezoidal adhesive strip 105 is used to fix the bottom frame 104 of the adjacent photovoltaic unit and the upper surface of the photovoltaic module to prevent rainwater from flowing back into the overlapping part. It also serves as a buffer to prevent direct contact between adjacent photovoltaic modules 101 and physical wear. The long adhesive strip 1091 is used to isolate the hanger 109 and the photovoltaic unit, and serves as a buffer.

[0037] like Figure 3 As shown, the left frame 102 includes a corner code groove 108, which includes a raised sidewall and a smooth sidewall opposite to the raised sidewall; the smooth sidewall extends upward to form a left mounting groove 1021, the opening of which faces the side of the raised sidewall, and the smooth sidewall extends downward to form a left overlapping member 1022 with an upward opening; as shown Figure 4-6 As shown, the right frame 103 includes a corner bracket groove 108, which includes a raised sidewall and a smooth sidewall opposite to the raised sidewall; the smooth sidewall extends upward to form a right mounting groove 1031, the opening of which faces the side of the raised sidewall; the smooth sidewall extends upward to form a right overlapping member 1032 with its opening facing downward. The opening directions of the left overlapping member 1022 and the right overlapping member 1032 change relative to each other; as... Figure 6 As shown, the left overlapping member 1022 is L-shaped and the right overlapping member 1032 is inverted L-shaped, interlocking with the left overlapping member 1022 to overlap adjacent photovoltaic units on the left and right. A water channel is formed between the left overlapping member 1022 and the right overlapping member 1032. The overlapping is achieved by utilizing the structure of the photovoltaic unit itself, saving materials for water channel and water collection channel, eliminating the need for additional components, making installation more convenient, reducing material costs, reducing the types of components during installation, and improving work efficiency.

[0038] like Figure 2-5As shown, the insert 107 is L-shaped, with insert portions at both ends. Each insert portion at both ends is provided with a protrusion 1071. The protruding sidewall of the corner bracket groove 108 is provided with serrations 1081. The serrations 1081 and the protrusions 1071 engage with each other to fix the bottom frame 104 to the left frame 102 and the bottom frame 104 to the right frame 103. The serrations 1081 cooperate with the insert protrusions 1071 to connect two adjacent frames, facilitating the corner assembly between the frames and forming an integral frame with better overall integrity.

[0039] like Figure 6-8 As shown, the assembly process of a photovoltaic unit for a stacked photovoltaic carport includes: a photovoltaic module 101 is built into a photovoltaic frame, wherein the left edge of the photovoltaic module 101 is placed in the left mounting groove 1021 of the left frame 102, the right edge of the photovoltaic module 101 is placed in the right mounting groove 1031 of the right frame 103, and the lower edge of the photovoltaic module 101 is placed on the extension of the bottom frame 104. The photovoltaic module 101 is placed in the left frame 102, the right frame 103, and the bottom frame 104, and the structure of the frame provides support for the photovoltaic module 101.

[0040] like Figure 9 As shown, the roof is evenly spaced with multiple purlins 202 arranged in multiple rows and columns. Each purlin 202 is fixed with a photovoltaic unit for the stacked photovoltaic carport. The roof is inclined from low to high.

[0041] like Figure 9-10 As shown, the process of a photovoltaic system for a stacked photovoltaic carport includes: sequentially fixing and installing photovoltaic units for the stacked photovoltaic carport from the first purlin in the lowest row; when the photovoltaic units of the stacked photovoltaic carport are adjacent to each other, the left overlapping piece 1022 of the left frame 102 and the right overlapping piece 1032 of the right frame 103 interlock and connect with each other; the second hanging part of the photovoltaic unit for the stacked photovoltaic carport is fixed to the purlin 202 by screws 201, forming a row of first photovoltaic unit modules; the upper surface of the first photovoltaic unit module overlaps the purlin 202; The photovoltaic units for the stacked photovoltaic carport are fixedly installed sequentially on the first purlin 202 of the second row. When the photovoltaic units of the stacked photovoltaic carports on the left and right sides overlap, the left overlap piece 1022 of the left frame 102 and the right overlap piece 1032 of the right frame 103 interlock and connect with each other to form a row of second photovoltaic unit modules. The tentacles of the trapezoidal adhesive strip 105 of the second photovoltaic unit module overlap the upper surface of the first photovoltaic unit module. The second hanging part of the second photovoltaic unit module is fixed to the purlin 202 of the roof. The photovoltaic units for the stacked photovoltaic carports located at the top of the roof are fixed by pressing the hanging piece 109 onto the upper surface of the photovoltaic unit and then fixing it to the purlin 202 of the roof.

[0042] Before on-site construction, the adapter 106 is first installed in the second interface groove 1042 of the bottom frame 104, and the trapezoidal adhesive strip 105 is also installed in the first interface groove 1041 of the bottom frame 104, forming a whole with the bottom frame 104. Then the bottom frame 104 is connected to the left frame 102 and the right frame 103 through the insert 107 to complete the pre-assembly of the photovoltaic unit for the stacked photovoltaic carport.

[0043] During installation, the installation direction follows the height of the carport, proceeding from low to high. Specifically, when installing the photovoltaic units for the first row of stacked photovoltaic carports, the bottom frame of the first stacked photovoltaic carport unit is placed on the steel purlin 202. A long adhesive strip 1091 is installed in the T-shaped limiting groove of the first mounting part of the hanger 109. One end of the adapter 106 on the bottom frame engages with the T-shaped groove of the hanger 109. The second mounting part of the hanger 109 is placed on the lower first steel purlin 202, and the second mounting part of the hanger 109 is secured by screws 201. The first photovoltaic unit for the stacked photovoltaic carport is installed after the end is fixed to the steel purlin 202. The second photovoltaic unit for the stacked photovoltaic carport is then installed horizontally. The right overlapping part 1032 of the photovoltaic unit for the stacked photovoltaic carport is pressed onto the left overlapping part 1022 of the first photovoltaic unit for the stacked photovoltaic carport. The connection process between the second photovoltaic unit for the stacked photovoltaic carport and the purlin 202 is the same as that of the first photovoltaic unit for the stacked photovoltaic carport. The units are installed sequentially to form the first photovoltaic unit module. The upper end of the first photovoltaic unit module overlaps the purlin 202. Next, the second row of photovoltaic (PV) unit modules is installed. PV units are sequentially fixed to the first purlin 202 of the second row. The horizontal installation process for the second row of PV module modules is the same as for the first row. The trapezoidal adhesive strip 105 of the second PV unit module overlaps the upper surface of the first PV unit module. The second mounting part of the second PV unit module is fixed to the purlin 202 and connected to the purlin 202 by screws 201. The second row of PV unit modules presses against the upper surface of the first row of PV unit modules. The installation of the remaining PV module modules repeats the above steps. The PV units for the stacked PV carport at the top of the roof are fixed by mounting brackets 109 pressed against the upper surface of the PV unit. The lower end of the second PV unit module presses against the upper surface of the first PV unit module, and then it is fixedly connected to the purlin 202 of the roof. During module installation, workers do not need to step on the PV units for the stacked PV carport to perform installation work, avoiding potential hazards such as microcracks or damage to the PV modules. Meanwhile, when dismantling the photovoltaic units used in the stacked photovoltaic carport, locate the component that needs to be removed, remove the screws 201 of the hanging part 109 from below, and slide the photovoltaic unit used in the stacked photovoltaic carport out along the slope to complete the dismantling.

[0044] The specific embodiments described herein are merely illustrative examples of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A photovoltaic unit for a superimposed photovoltaic carport, characterized in that, Includes photovoltaic module (101), left frame (102), right frame (103) and bottom frame (104); The bottom frame (104) has an extension on one side for supporting the photovoltaic module (101), and a first interface groove (1041) is opened on the other side of the bottom frame (104). A trapezoidal adhesive strip (105) is installed in the first interface groove (1041), and a second interface groove (1042) is opened on the upper surface of the bottom frame (104). It also includes an adapter (106) and a pendant (109), one end of the adapter (106) being connected to the second interface slot (1042), and the other end of the adapter (106) being slidably connected to the pendant (109).

2. The photovoltaic unit for the superimposed photovoltaic carport according to claim 1, characterized in that, The adapter (106) consists of a connector and T-shaped components that are misaligned and connected to both sides of the connector, with the two T-shaped components facing each other. The pendant (109) includes an L-shaped pendant part and a T-shaped groove provided at one end of the L-shaped pendant part; the L-shaped pendant part includes a first pendant part and a second pendant part; the first pendant part has a T-shaped limiting groove (1092); the T-shaped limiting groove is equipped with an elongated rubber strip (1091). One end of the adapter (106) is connected to the second interface groove (1042), and the other end of the adapter (106) is slidably connected to the T-shaped groove of the hanger (109). The second hanger part of the L-shaped hanger part is fixed to the purlin (202) of the ceiling.

3. The photovoltaic unit for the superimposed photovoltaic carport according to claim 1, characterized in that, The first interface groove (1041) is a trapezoidal groove, and the trapezoidal rubber strip (105) has an arc-shaped protrusion on the side away from the first interface groove (1041), and the two ends of the arc-shaped protrusion are provided with antennae.

4. The photovoltaic unit for the superimposed photovoltaic carport according to claim 1, characterized in that, The second interface groove (1042) is a T-shaped groove. One end of the adapter (106) is fitted into the second interface groove (1042). The other end of the adapter (106) is connected to one end of the hanger (109). The other end of the hanger (109) is fixed to the purlin (202) of the ceiling.

5. The photovoltaic unit for the superimposed photovoltaic carport according to claim 1, characterized in that, The left frame (102) includes a corner code slot (108), which includes a raised sidewall and a smooth sidewall opposite to the raised sidewall; The smooth sidewall extends upward to form a left mounting groove (1021), and the smooth sidewall extends downward to form a left overlap (1022). The right frame (103) includes a corner code slot (108), which includes a raised sidewall and a smooth sidewall opposite to the raised sidewall; The smooth sidewall extends upward to form a right mounting groove (1031), and the smooth sidewall extends upward to form a right overlapping member (1032). The openings of the left mounting slot (1021) and the right mounting slot (1031) face the side of the protruding sidewall; The opening of the left overlap (1022) faces upward, and the opening of the right overlap (1032) faces downward.

6. The photovoltaic unit for the superimposed photovoltaic carport according to claim 5, characterized in that, The left frame (102) and the bottom frame (104) are fixedly connected by a core (107); the right frame (103) and the bottom frame (104) are fixedly connected by a core (107).

7. The photovoltaic unit for the superimposed photovoltaic carport according to claim 6, characterized in that, The insert (107) is L-shaped, and the two ends of the insert are insert portions.

8. The photovoltaic unit for the superimposed photovoltaic carport according to claim 7, characterized in that, The protruding sidewall of the corner code slot (108) is provided with serrations (1081), and both of the insert parts are provided with protrusions (1071). The serrations (1081) and the protrusions (1071) engage with each other to fix the bottom frame (104) to the left frame (102) and the bottom frame (104) to the right frame (103).

9. The photovoltaic unit for the superimposed photovoltaic carport according to claim 5, characterized in that, The left overlap (1022) is L-shaped, and the right overlap (1032) is an inverted L-shaped component that cooperates with the left overlap (1022).

10. The photovoltaic unit for the superimposed photovoltaic carport according to claim 5, characterized in that, Includes a photovoltaic frame, and the photovoltaic module (101) is built into the photovoltaic frame; The left edge of the photovoltaic module (101) is placed in the left mounting groove (1021) of the left frame (102), the right edge of the photovoltaic module (101) is placed in the right mounting groove (1031) of the right frame (103), and the lower edge of the photovoltaic module (101) is placed on the extension of the bottom frame (104).

11. A photovoltaic system for a superimposed photovoltaic carport, characterized in that, According to any one of claims 1-10, the photovoltaic unit for the superimposed photovoltaic carport is provided with a plurality of purlins (202) evenly spaced to form multiple rows and columns, and each purlin (202) is fixed with a photovoltaic unit for the superimposed photovoltaic carport; the roof is inclined from low to high; The photovoltaic units for the stacked photovoltaic carport are fixedly installed sequentially from the first purlin in the lowest row. When the photovoltaic units for the stacked photovoltaic carport are overlapped, the left overlap member (1022) and the right overlap member (1032) are interlocked and connected. The second hanging part of the photovoltaic unit for the stacked photovoltaic carport is fixed to the purlin (202) by screws (201) to form a row of first photovoltaic unit modules. The upper end of the first photovoltaic unit module overlaps the purlin (202). The photovoltaic units for the stacked photovoltaic carport are fixedly installed sequentially on the first purlin (202) in the second row. When the photovoltaic units for the stacked photovoltaic carport are overlapped on the left and right, the left overlap member (1022) and the right overlap member (1032) are interlocked to form a row of second photovoltaic unit modules. The trapezoidal adhesive strip (105) of the second photovoltaic unit module overlaps the upper surface of the first photovoltaic unit module, which is used to press the lower end of the second photovoltaic unit module against the upper surface of the first photovoltaic unit module. The second hanging part of the second photovoltaic unit module is fixed to the purlin (202) of the roof.

Images