Photovoltaic power generation system

Abstract

The utility model discloses a photovoltaic power generation system. The photovoltaic power generation system comprises a photovoltaic module and two supporting structures connected with the photovoltaic module, wherein the two supporting structures respectively correspond to two opposite frame side surfaces of the photovoltaic module; the supporting structures are oppositely arranged and fixed to the base or the ground, and the supporting structures are rotationally connected with the side faces of the corresponding frames, so that the photovoltaic module is turned over with the rotationally-connected position as the axis under external driving, and the orientation of the light receiving face and the backlight face of the photovoltaic module is changed. When the photovoltaic module is in a non-overturning state, at least one triangular structure is defined by the supporting structure and the corresponding side face of the frame, and the photovoltaic module is stably fixed through the supporting structure. The photovoltaic power generation system can effectively prolong the service life of the photovoltaic module.

Description

Technical Field

[0001] This utility model relates to a photovoltaic power generation system. Background Technology

[0002] A photovoltaic power generation system typically uses fixed brackets to support photovoltaic modules, exposing them to sunlight at a specific angle. The photovoltaic modules convert light energy into electrical energy, which is then led to energy storage devices or electrical loads via electrode leads.

[0003] In photovoltaic (PV) power generation systems, the light-receiving and back-lighting surfaces of the PV modules are fixed after installation. While PV power generation systems primarily rely on the light-receiving surfaces of the PV modules to directly receive sunlight and generate more electricity, the cover plates of the light-receiving surfaces of the PV modules are also more prone to chemical corrosion and weathering. This leads to a significant decrease in the light transmittance of the PV modules in the system, and there is still room for improvement in the lifespan of the PV modules. Utility Model Content

[0004] In view of this, the present invention provides a photovoltaic power generation system. The photovoltaic power generation system is rotatably connected to the side of the frame of the photovoltaic module through a support structure. With the help of the support structure, the photovoltaic module can not only be stably supported, but also the photovoltaic module can be flipped to easily change the orientation of the light-receiving surface and the back-lighting surface of the photovoltaic module, so as to extend the transmittance decay time of the photovoltaic module and help improve the service life of the photovoltaic module.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model provides a photovoltaic power generation system, including: a photovoltaic module and two supporting structures connected to the photovoltaic module, wherein...

[0007] The two support structures correspond to the two opposite sides of the frame of the photovoltaic module, respectively;

[0008] The support structure is arranged opposite to and fixed to the base or the ground, and the support structure is rotatably connected to its corresponding frame side, so that the photovoltaic module can be rotated around the rotatable connection position under external drive, so as to switch the light-receiving surface and the back-lighting surface of the photovoltaic module.

[0009] When the photovoltaic module is in an unflipped state, each of the support structures and its corresponding frame side forms at least one triangular structure to stably fix the photovoltaic module through the support structure.

[0010] The first aspect of the above-mentioned utility model has the following advantages or beneficial effects:

[0011] The photovoltaic power generation system provided in this embodiment of the utility model, when the photovoltaic module is in an unflipped state, uses two support structures to form at least one triangular structure with the side of the frame of the corresponding photovoltaic module. This allows the support structures to stably fix the photovoltaic module, ensuring its normal operation. Furthermore, the two support structures are rotatably connected to the side of the frame of the corresponding photovoltaic module, and can be flipped around the rotatable connection position under external drive. This allows for convenient switching of the orientation of the light-receiving and back-lighting surfaces of the photovoltaic module, enabling the light-receiving and back-lighting surfaces to alternately receive direct sunlight, weathering, and chemical corrosion, thus delaying the performance degradation of the light-receiving surface of the photovoltaic module, extending the transmittance degradation time of the photovoltaic module, and improving its service life.

[0012] In addition, since the lifespan of photovoltaic modules is extended and the damage to the light-receiving surface of photovoltaic modules is delayed, the structure provided by this utility model embodiment helps to improve the power generation performance of photovoltaic modules throughout their entire life cycle by conveniently flipping the photovoltaic modules. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of a photovoltaic power generation system with the light-receiving surface of the photovoltaic module facing upward, according to an embodiment of the present utility model.

[0014] Figure 2 This is a three-dimensional structural diagram of a photovoltaic power generation system with the backlight of the photovoltaic module facing upward, according to an embodiment of the present utility model.

[0015] Figure 3 This is a three-dimensional structural diagram of a photovoltaic module with its light-receiving surface facing upward, according to an embodiment of the present utility model.

[0016] Figure 4 This is a three-dimensional structural diagram of a photovoltaic module with its backlight facing upward, according to an embodiment of the present utility model.

[0017] Figure 5 This is a three-dimensional structural diagram of the first support structure provided according to an embodiment of the present utility model;

[0018] Figure 6 This is a schematic diagram showing the connection relationship between the support column, the first support rod, and the second support rod in the first support structure provided according to the embodiments of this utility model;

[0019] Figure 7 This is a three-dimensional structural diagram of the second support structure provided according to an embodiment of the present utility model;

[0020] Figure 8 This is a schematic diagram showing the relative relationship between the first type of support structure and the lead wire placement groove according to an embodiment of the present utility model;

[0021] Figure 9 This is a schematic diagram showing the relative relationship between the support column and the lead wire placement groove according to an embodiment of the present utility model;

[0022] Figure 10 This is a three-dimensional structural diagram of the first support rod provided according to an embodiment of the present utility model.

[0023] The attached figures are labeled as follows:

[0024] 10-Photovoltaic module; 11-Connector; 12-Drainage hole; 20-Support structure; 21-Support column; 22-First support rod; 23-Second support rod; 24-First columnar mounting head; 25-Second columnar mounting head; 30-Lead wire placement groove; 50-Base; 60-Gateway box. Detailed Implementation

[0025] The photovoltaic power generation system involved in this utility model embodiment generally refers to a system that uses photovoltaic modules to convert light energy into electrical energy, and stores the electrical energy, converts the electrical energy into alternating current, or outputs the electrical energy to a load. A photovoltaic power station may have one or more photovoltaic power generation systems. In addition, a photovoltaic power generation system may include one or more photovoltaic modules 10.

[0026] For example, the photovoltaic power generation system may be part of a photovoltaic power station set up in an open area, or it may be a system containing photovoltaic modules set up on a roof, or it may be a system set up on a utility pole to provide power for streetlights or sensor lights, or it may be a system set up in a public telephone booth to provide power for public telephones, etc.

[0027] The specific structure of the photovoltaic power generation system provided in the embodiments of this utility model will be described in detail below.

[0028] in, Figure 1 and Figure 2 These are three-dimensional structural diagrams of the photovoltaic power generation system in different states according to embodiments of this utility model; Figure 3 and Figure 4 This is a three-dimensional structural diagram of a photovoltaic module in different states according to embodiments of the present utility model; Figure 5 and Figure 7 These are three-dimensional structural diagrams of different support structures provided according to embodiments of this utility model.

[0029] Specifically, such as Figure 1 and Figure 2 As shown, the photovoltaic power generation system provided in this embodiment of the present invention may include: a photovoltaic module 10 and two support structures 20 connected to the photovoltaic module, wherein the two support structures 20 correspond to two opposite side frames of the photovoltaic module 10.

[0030] It is worth noting that the side of the frame involved in this embodiment of the utility model refers to the side of the frame of the photovoltaic module 10.

[0031] More specifically, such as Figure 1 , Figure 2 , Figure 5 and Figure 7 As shown, the support structure 20 is positioned opposite to and fixed to the base 50 or the ground, and the support structure 20 is rotatably connected to its corresponding frame side, so that the photovoltaic module 10 is rotated around the rotatable connection position under external drive, so as to switch the orientation of the light-receiving surface and the backlight surface of the photovoltaic module 10.

[0032] Furthermore, when the photovoltaic module 10 is in the non-flipped state, each support structure 20 and its corresponding frame side form at least one triangular structure to stably fix the photovoltaic module 10 through the support structure 20. The photovoltaic module 10 being in the non-flipped state means that the relative relationship (relative position and connection) between the photovoltaic module 10 and the support structure remains unchanged. Regardless of whether the light-receiving side of the photovoltaic module 10 faces upwards or the back-lighting side faces upwards, the photovoltaic module 10 can maintain its position and tilt angle unchanged when in the non-flipped state. In other words, the photovoltaic module 10 is generally in a specific position and remains unchanged in that specific position when in the non-flipped state. Only when a driving force is applied to the photovoltaic module 10 or the connection relationship between the photovoltaic module and the support structure 20 is changed will the photovoltaic module enter the flipped state.

[0033] For photovoltaic modules 10, which are generally rectangular in structure, in addition to the light-receiving surface and the back-lighting surface, such as Figure 3 and Figure 4 As shown, the photovoltaic module 10 generally also includes four sides, which are opposite to each other in pairs (e.g., Figure 3 and Figure 4 As shown, side A and side A' are opposite to each other, and side B and side B' are opposite to each other. For example, side A and side A' are long side surfaces formed by the long sides of the light-receiving surface and the back-lighting surface and the thickness of the photovoltaic module 10, and side B and side B' are short side surfaces formed by the wide sides of the light-receiving surface and the back-lighting surface and the thickness of the photovoltaic module 10.

[0034] The two support structures 20 can each correspond to two opposite long side surfaces (i.e., side A and side A') or two opposite short side surfaces (i.e., side B and side B'). Preferably, the two support structures 20 can each correspond to two opposite long side surfaces (i.e., side A and side A') to better stabilize the photovoltaic module 10.

[0035] Furthermore, the light-receiving surface of a photovoltaic module 10 generally refers to the main surface that faces upwards and primarily receives light during most of the time of its use; the backlighting surface of a photovoltaic module 10 generally refers to the main surface that faces downwards and is opposite to the light-receiving surface during most of the time of its use. Generally speaking, such as Figure 2 and Figure 4 As shown, the junction box 60 used for the photovoltaic module 10 is generally located on the back surface of the photovoltaic module 10.

[0036] The rotational connection between the support structure 20 and its corresponding side frame can take various forms, such as... Figure 2 The connection relationships between the support structure 20 and the photovoltaic module 10 at the connection points (S1, S2, S3, S1', S2', and S3') can be as follows: all connection points (S1, S2, S3, S1', S2', and S3') are rotatably connected; or the connection relationships between the support structure 20 and the photovoltaic module 10 at the connection points (S1, S2, S3, S1', S2', and S3') are detachably connected, while the connection points S2 and S2' are rotatably connected. Understandably, during the rotation of the photovoltaic module 10, the support structure 20 can rotate relative to the photovoltaic module 10, allowing external driving force to cause the photovoltaic module to rotate on its axis.

[0037] It is worth noting that the flipping of photovoltaic module 10 around the pivot point generally refers to, for example... Figure 2 As shown, with the line L connecting positions S2 and S2' as the axis, the photovoltaic module 10 is flipped, realizing the photovoltaic module 10 from... Figure 1 The state of the light-receiving surface facing upwards becomes Figure 2 The backlight side is facing upwards. Alternatively, it can also be seen from... Figure 2 The backlight side facing up becomes Figure 1 The side receiving light is facing upwards.

[0038] In addition, it is worth noting that the external drive of the photovoltaic module 10 can be that the maintenance personnel of the photovoltaic module 10 manually drive the photovoltaic module, or the drive motor can apply rotational driving force to the photovoltaic module 10 or some parts of the support structure 20 through an external rotating shaft, thereby driving the photovoltaic module 10 to rotate.

[0039] In the case of the photovoltaic module 10 not being flipped, the photovoltaic module 10 is located in a specific position and remains unchanged in that specific position. This specific position generally refers to the direction and angle from which the photovoltaic module 10 can receive a large amount of sunlight. Due to the differences in the direction of sunlight in different regions, the specific position of the photovoltaic module 10 in different regions will also be different.

[0040] Understandably, for each support structure 20, at least one triangular structure is formed around its corresponding side frame, such as... Figure 5 As shown, each support structure 20 and its corresponding side border form two triangles: one support structure 20 and its corresponding side border form triangle structures T1 and T2, and the other support structure 20 and its corresponding side border form triangle structures T3 and T4. Alternatively, one support structure 20 can form triangle structure T1 and the other support structure 20 can form triangle structure T4; or one support structure 20 can form triangle structure T2 and the other support structure 20 can form triangle structure T3.

[0041] It should be noted that the above-mentioned interchange of the light-receiving and back-light-receiving surfaces of the photovoltaic module 10 refers to rotating the photovoltaic module 10 by 180° to interchange the light-receiving and back-light-receiving surfaces, while the overall tilt angle of the photovoltaic module 10 does not change.

[0042] against Figure 1 and Figure 2 The provided photovoltaic power generation system, when the photovoltaic module 10 is in an unflipped state, uses two support structures 20 to form at least one triangular structure with the side of the frame of the corresponding photovoltaic module 10. This allows the support structures 20 to stably fix the photovoltaic module 10, ensuring its normal operation. Furthermore, the two support structures 20 are rotatably connected to the side of the frame of the corresponding photovoltaic module 10, and can be flipped around the rotatable connection position under external drive. This allows the light-receiving and back-light-receiving surfaces of the photovoltaic module 10 to be rotated, thus allowing the light-receiving and back-light-receiving surfaces to alternately receive direct sunlight, weathering, and chemical corrosion, thereby delaying the performance degradation of the light-receiving surface of the photovoltaic module 10, extending the transmittance degradation time of the photovoltaic module 10, and improving its service life.

[0043] In addition, due to the increased lifespan of the photovoltaic module 10 and the delayed damage to the light-receiving surface of the photovoltaic module 10, the structure provided by this utility model embodiment helps to improve the power generation performance of the photovoltaic module 10 throughout its entire life cycle by conveniently flipping the photovoltaic module 10.

[0044] In addition, due to the structure provided by this utility model, the photovoltaic module 10 can rotate around the connection position between itself and the support structure 20. It can be rotated automatically or by a maintenance personnel without completely disassembling the heavy photovoltaic module 10, thus saving labor costs.

[0045] Furthermore, such as Figure 3 and Figure 4 As shown, multiple connecting parts 11 are respectively provided on the two opposite sides of the photovoltaic module 10 frame. Generally, there is one connecting part 11 located in the middle of each side of the frame (e.g., ...). Figure 2 The connecting portion 11 at positions S2 and S2' shown, and the connecting portions 11 on both sides of the connecting portion 11 at the middle position (as shown) Figure 2 (S1, S3, S1', and S3' shown). Furthermore, based on the structure provided in this embodiment, those skilled in the art can also provide more connecting portions 11 on both sides of the middle position, which will not be elaborated further here.

[0046] Furthermore, the connection between the support structure 20 and the photovoltaic module 10 can be as follows: on each side of the frame, the connecting part 11 at the middle position is rotatably connected to the support structure 20, while the other connecting parts 11 are detachably connected to the support structure 20. Specifically, when the photovoltaic module 10 is not in a flipped state, all connecting parts 11 are connected to the support structure 20. When it is necessary to flip the photovoltaic module 10, if the length of the support structure 20 is fixed, the connection between the support structure 20 and the other connecting parts 11 needs to be disassembled, and then the photovoltaic module 10 is flipped around the connecting part 11 at the middle position as the axis. If the length of the support structure 20 is adjustable, the photovoltaic module 10 can be flipped around the connecting part 11 at the middle position as the axis without disassembling the connection between the support structure 20 and the other connecting parts 11. Specifically, for a structure where the length of the support structure 20 is fixed, such as... Figure 1 and Figure 2 As shown, the two support structures 20 correspond to the two side frames with connecting portions 11, respectively; the support structure 20 and its corresponding side frame with a connecting portion 11 (such as...) Figure 3 and Figure 4 The connecting part 11 at the middle position shown is rotatably connected; when the photovoltaic module 10 is in the non-flipped state, the support structure 20 is connected to the other unconnected connecting parts 11 on the side of the frame (such as...). Figure 3 and Figure 4 The connecting portions 11 shown, excluding the one in the middle position, are detachably connected, so that the support structure 20 and its corresponding side frame form at least one triangular structure; all the triangular structures formed by the support structure 20 and its corresponding side frame (i.e. Figure 5After T1, T2, T3, and T4 shown are all released, the photovoltaic module 10 is rotated to a position under external drive (this rotational connection position is...). Figure 2 S2 and S2' shown are axes (which are the axes of the axes shown). Figure 2 The line connecting S2 and S2' shown is flipped.

[0047] More specifically, a structure with three connecting parts 11 is provided on each side of the frame, such as... Figure 1 , Figure 2 , Figure 5 and Figure 7 As shown, each support structure 20 may include: a support column 21, a first support rod 22, and a second support rod 23. It can be understood that a structure with three or more connecting parts 11 on each side of the frame may also include more support rods matching the connecting parts 11.

[0048] The connection structure for the supporting column 21, the first supporting rod 22, and the second supporting rod 23 can be as follows: Figure 1 and Figure 2 As shown, one end of the support column 21 is fixed to the base or the ground; the other end of the support column 21 is rotatably connected to the side of the corresponding frame of the support structure 20 (that is, the support column is rotatably connected to the connecting part 11 located in the middle of the side of the frame). Figure 1 , Figure 2 , Figure 5 and Figure 7 As shown, one end of the first support rod 22 and one end of the second support rod 23 are connected to the support column 21; the other ends of the first support rod 22 and the second support rod 23 are detachably connected to the corresponding side of the frame of the support structure 20, so that the first support rod 22, the support column 21 and the connected side of the frame form a first triangular structure (e.g., Figure 5 As shown in T1 and T3), the second support rod 23, the support column 21, and the connected side of the frame form a second triangular structure (as shown in T1 and T3). Figure 5 As shown in T2 and T4), the first triangular structure and the second triangular structure are located on both sides of the supporting column 21.

[0049] By combining the first triangular structure and the second triangular structure, the support structure 20 can support the photovoltaic module 10 for a longer period of time and more stably.

[0050] More specifically, such as Figure 5 , Figure 6 , Figure 7 and Figure 10 As shown, one end of the first support rod 22 and one end of the second support rod 23 can be connected to the support column 21 via the first cylindrical mounting head 24. Figure 6 and Figure 10As shown, the first cylindrical mounting head 24 is connected to the first mounting hole. Exemplarily, the first cylindrical mounting head 24 is located at one end of the first support rod 22 (as shown). Figure 10 As shown, the first mounting hole is located on one end of the first support rod 22 and the second support rod 23, and correspondingly, the first mounting hole is located on the support column 21. Alternatively, the first cylindrical mounting head 24 can also be located on the support column 21, with the first mounting hole located at one end of the first support rod 22 and the end of the second support rod 23. By connecting the first cylindrical mounting head 24 with the first mounting hole, convenient installation can be achieved between one end of the first support rod 22 and the end of the second support rod 23 and the support column 21. The length of the first cylindrical mounting head 24 is generally 10mm to 100mm. For example, the length of the first cylindrical mounting head 24 can be 10mm, 20mm, 30mm, 50mm, 70mm, 80mm, 90mm, or 100mm, etc.

[0051] In addition, the diameter of the first mounting hole can be 5mm to 25mm. For example, the diameter of the first mounting hole can be 5mm, 8mm, 10mm, 15mm, 20mm or 25mm, etc. By limiting the diameter of the first mounting hole, a stable connection with the first cylindrical mounting head 24 can be ensured, while avoiding damage to the structure (first support rod 22 or second support rod 23 or support column 21) caused by the first mounting hole.

[0052] like Figure 5 , Figure 6 , Figure 7 and Figure 10 As shown, the other end of the first support rod 22 and the other end of the second support rod 23 are rotatably connected to the corresponding side of the frame of the support structure 20 via a second cylindrical connector 25 and a matching second mounting hole. Exemplarily, the second cylindrical connector 25 is located at the other end of the first support rod 22 (e.g., ...). Figure 10 As shown in the diagram, the second cylindrical connector 25 is located at the other end of the second support rod 23, and correspondingly, the second mounting hole is the connection portion 11 on the photovoltaic module 10. Alternatively, the second cylindrical connector 25 can also be located on the photovoltaic module 10, and correspondingly, the second mounting hole is located at the other end of the first support rod 22 and the other end of the second support rod 23. The length of the second cylindrical connector 25 is generally 1.5mm to 30mm. For example, the length of the second cylindrical connector 25 can be 1.5mm, 2mm, 5mm, 10mm, 15mm, 20mm, 25mm, or 30mm, etc.

[0053] By connecting the second cylindrical connector 25 with the second mounting hole, the other end of the first support rod 22 and the other end of the second support rod 23 can be conveniently installed with the photovoltaic module 10. For example, the length of the second cylindrical connector 25 can be 1.5mm, 2mm, 5mm, 10mm, 13mm, 15mm, 20mm, 25mm or 30mm, etc.

[0054] In addition, the diameter of the second mounting hole can be 5mm to 25mm. For example, the diameter of the second mounting hole can be 5mm, 8mm, 10mm, 15mm, 20mm or 25mm, etc. By limiting the diameter of the second mounting hole, a stable connection with the second cylindrical mounting head 25 can be ensured, while avoiding damage to the structure where the second mounting hole is located (the first support rod 22 or the second support rod 23 or the frame of the photovoltaic module 10).

[0055] Furthermore, the support column 21 and the corresponding photovoltaic module 10's frame side can also be rotatably connected via a cylindrical connector with a length of 1.5mm to 30mm and matching mounting holes. For example, the length of the cylindrical connector used to connect the support column 21 and the corresponding photovoltaic module 10's frame side can be 1.5mm, 2mm, 5mm, 10mm, 15mm, 20mm, 25mm, or 30mm, etc. Additionally, the diameter of the cylindrical connector can be 5mm to 25mm; for example, the diameter can be 5mm, 8mm, 10mm, 15mm, 20mm, or 25mm, etc. This cylindrical connector and mounting holes enable convenient installation of the support column 21 and the corresponding photovoltaic module 10's frame side, and allow for a rotatable connection between the support column 21 and the photovoltaic module.

[0056] Preferably, the position where the support column 21 and the support structure 20 are rotatably connected to the side of the frame is located at the center of the side of the frame, so as to facilitate the rotation of the photovoltaic module.

[0057] Furthermore, the other ends of the first support rod 22 and the other ends of the second support rod 23 are symmetrically connected to the detachable positions on the side of the frame relative to the center of the side of the frame. On the one hand, this provides more stable support for the photovoltaic module 10; on the other hand, after the photovoltaic module is flipped, the connection positions of the other ends of the first support rod 22 and the other ends of the second support rod 23 with the side of the frame can be interchanged, making the support structure 20 more practical.

[0058] Furthermore, there are two possible connection relationships between the first support rod 22, the second support rod 23, and the support column 21.

[0059] Specifically, the first connection relationship between the first support rod 22, the second support rod 23, and the support column 21 is as follows: the lengths of the first support rod 22 and the second support rod 23 are fixed, and one end of the first support rod 22 and one end of the second support rod 23 are fixedly connected to the support column 21; after the other end of the first support rod 22 and the other end of the second support rod 23 are disconnected, the photovoltaic module 10 can be rotated around the pivot position under external drive. Figure 1 , Figure 2 , Figure 5 and Figure 6 Taking the structure shown as an example, one end of the first support rod 22 and one end of the second support rod 23 are fixedly connected to the support column 21 through the cooperation of the first columnar mounting head 24 and the first assembly hole. When the photovoltaic module 10 is in an unflipped state (e.g....), Figure 1 and Figure 2 In the case of the position shown, the other end of the first support rod 22 and the other end of the second support rod 23 can be installed on the connecting part 11 on the side of the photovoltaic module frame. When it is necessary to flip the photovoltaic module, first disconnect the connection between the other end of the first support rod 22 and the other end of the second support rod 23 and the connecting part 11 on the side of the photovoltaic module frame, and then drive the photovoltaic module 10 so that the photovoltaic module 10 is aligned with the axis formed by the connection position between the support column 21 and the photovoltaic module 10. Figure 2 The L shown is flipped to switch the orientation of the light-receiving surface and the back-lighting surface of the photovoltaic module 10.

[0060] More preferably, the height of the other end of the first support rod 22 is higher than the height of the other end of the second support rod 23, which can keep the photovoltaic module in an inclined state to better utilize light energy.

[0061] Generally, for a structure in which one end of the first support rod 22 and one end of the second support rod 23 are fixedly connected to the support column 21, it can be done as follows: Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the first support rod 22 and the second support rod 23 are disposed on the outer side of the support column 21. Alternatively, the first support rod 22 and the second support rod 23 can also be disposed on the inner side of the support column 21 simultaneously, or the first support rod 22 and the second support rod 23 can be disposed on the inner and outer sides of the support column 21 respectively.

[0062] Furthermore, a second connection relationship exists between the first support rod 22 and the second support rod 23 and the support column 21: the first support rod 22 and the second support rod 23 are rotatably connected to the support column 21. Specifically, both the first support rod 22 and the second support rod 23 are telescopic rods with adjustable length; one end of the first support rod 22 and one end of the second support rod 23 are rotatably connected to opposite sides of the support column 21. The rotation of the first support rod 22, the extension and retraction of the first support rod, and the rotation and extension and retraction of the second support rod 23 assist in the rotation of the photovoltaic module 10. Here, the opposite sides of the support column 21 generally refer to the inner and outer walls of the support column 21. For example, as shown... Figure 7 As shown, one end of the first support rod 22 is rotatably connected to the outer wall of the support column 21; one end of the second support rod 23 is rotatably connected to the inner wall of the support column 21; the rotation of the first support rod 22, the extension and retraction of the first support rod, the rotation of the second support rod 23, and the extension and retraction of the second support rod 23 assist in the flipping of the photovoltaic module 10. Figure 7 As shown, after being driven, the first support rod 22 and the second support rod 23 rotate clockwise in the direction X. During the rotation of the first support rod 22 and the second support rod 23, as the position of the photovoltaic module 10 changes, the first support rod 22 and the second support rod 23 will stretch or contract synchronously, so that the length of the first support rod 22 and the length of the second support rod 23 meet the changes in the position of the photovoltaic module 10. Understandably, due to the connection between the first support rod 22 and the photovoltaic module 10, when the light-receiving surface of the photovoltaic module 10 is facing upwards and the height of the first support rod 22 is higher than the second support rod 23, the photovoltaic module 10 rotates clockwise to switch the orientation of the light-receiving surface and the backlight surface of the photovoltaic module 10. When the backlight surface of the photovoltaic module 10 is facing upwards and the height of the second support rod 23 is higher than the first support rod 22, the photovoltaic module 10 rotates clockwise to switch the orientation of the light-receiving surface and the backlight surface of the photovoltaic module 10.

[0063] Regarding the second connection relationship between the first support rod 22, the second support rod 23, and the support column 21, there are two ways to drive the photovoltaic module 10 to flip.

[0064] Specifically, the first method of driving the photovoltaic module 10 to flip can be as follows: after the photovoltaic module 10 is driven to flip, the first support rod 22 is driven to rotate around its rotational connection position with the outer wall of the support column 21 and the length of the first support rod 22 is extended or retracted, and the second support rod 23 is driven to rotate around its rotational connection position with the inner wall of the support column 21 and the length of the second support rod 23 is extended or retracted.

[0065] The second way to drive the photovoltaic module 10 to flip can be that after the first support rod 22 is driven to rotate, the first support rod 22 rotates around its rotational connection position with the outer wall of the support column 21, causing the length of the first support rod 22 to extend or retract, and causing the photovoltaic module 10 to flip, and the second support rod 23 rotates around its rotational connection position with the inner wall of the support column 21 and the length of the second support rod 23 to extend or retract.

[0066] By rotating the first support rod 22 around its rotatable connection position with the outer wall of the support column 21, extending or retracting the length of the first support rod 22, and rotating the second support rod 23 around its rotatable connection position with the inner wall of the support column 21 and extending or retracting the length of the second support rod 23, the photovoltaic module 10 can be flipped without disassembling the connection between the first support rod 22 and the photovoltaic module 10 or the connection between the second support rod 23 and the photovoltaic module 10. This simplifies the flipping process of the photovoltaic module 10 and improves the flipping efficiency of the photovoltaic module 10.

[0067] It is worth noting that when the photovoltaic module 10 is in an unflipped state, the first support rod 22 and the support column 21, as well as the second support rod 23 and the support column 21, can be fixed by fixing pins. The specific fixing method can adopt existing fixing methods.

[0068] Furthermore, the aforementioned photovoltaic power generation system may also include: a micro-driver (not shown in the figure), which is used to drive the photovoltaic module 10 to rotate, or to drive the first support rod 22 to rotate, or to drive the second support rod 23 to rotate. Through micro-driver control, the photovoltaic module 10 can be automatically rotated without manual operation, further improving the rotation efficiency of the photovoltaic module 10.

[0069] Furthermore, such as Figure 8 and Figure 9As shown, the aforementioned photovoltaic power generation system may further include: a lead wire placement groove 30 disposed on the top of the support column 21; the lead wire placement groove 30 is used to place the electrode leads of the photovoltaic module 10. By placing the electrode leads in the lead wire placement groove 30, during the rotation of the photovoltaic module 10, the electrode leads can be prevented from entangled in the support structure 20, and the connection of the electrode leads can be prevented from being damaged during rotation, ensuring smooth rotation of the photovoltaic module 10 and improving the rotation safety of the photovoltaic module 10. The diameter of the lead wire placement groove 30 is generally 1mm to 5mm larger than the diameter of the electrode leads. For example, the diameter of the lead wire placement groove 30 is 1mm, 2mm, 4mm, or 5mm larger than the diameter of the electrode leads, etc. By controlling the relationship between the diameter of the lead wire placement groove 30 and the diameter of the electrode leads, the electrode leads can be prevented from falling out of the lead wire placement groove 30, and the lead wire placement groove 30 can be used to securely support the electrode leads. In addition, it also facilitates the placement of the electrode leads.

[0070] Furthermore, such as Figure 3 and Figure 4 As shown, the photovoltaic power generation system may further include: drainage holes 12 disposed on the frame of the photovoltaic module 10; the side of the frame where the drainage holes 12 are located is not the side of the frame connected to the support structure 20; the drainage holes 12 are used to drain water accumulated on the photovoltaic module 10. By providing these drainage holes 12, water accumulation on the surface of the photovoltaic module 10 can be avoided, thereby reducing the risk of hot spots appearing on the photovoltaic module 10. The number of drainage holes 12 can be 2 to 8. For example, the number of drainage holes 12 may be 2, 4, 6, or 8, etc.

[0071] In summary, for the photovoltaic power generation system provided in this embodiment of the present invention, the support structure 20 can rotate the photovoltaic module 10 in two ways.

[0072] Specifically, in the first method of rotating the photovoltaic module 10: the support column 21 in the support structure 20 is fixedly connected to both the first support rod 22 and the second support rod 23 (i.e., there will be no relative displacement between the support column 21 and the first support rod 22, and no relative displacement between the support column 21 and the second support rod 23). The two sides of the photovoltaic module 10's frame are respectively connected to the two support structures 20, specifically, as follows... Figure 2 As shown, the supporting column 21 and Figure 3The connecting part 11 at the middle position shown is rotatably connected. The first support rod 22 is detachably connected to the connecting part 11 on one side, and the second support rod 23 is detachably connected to the connecting part 11 on the other side, so as to fix the photovoltaic module 10 in a specific position, in which the photovoltaic module 10 is in an unflipped state. When it is necessary to switch the light-receiving surface and the backlight surface of the photovoltaic module 10, the connection between the first support rod 22 and the connecting part 11 on one side is released, and the connection between the second support rod 23 and the connecting part 11 on the other side is released. Then, by driving the photovoltaic module 10, the photovoltaic module is rotated around... Figure 2 The axis L shown is rotated to switch the orientation of the light-receiving surface and the back-lighting surface of the photovoltaic module 10. After the switch is completed, the first support rod 22 and the second support rod 23 are reconnected to the connecting part 11. The connecting part 11 to which the first support rod 22 is reconnected is the same as the connecting part 11 to which the second support rod 23 was connected before the rotation, and the connecting part 11 to which the second support rod 23 is reconnected is the same as the connecting part 11 to which the first support rod 22 was connected before the rotation, so that the photovoltaic module 10 is back in the unflipped state.

[0073] In another method of rotating the photovoltaic module 10, the support column 21 in the support structure 20 is rotatably connected to both the first support rod 22 and the second support rod 23. The two sides of the photovoltaic module 10's frame are respectively connected to the two support structures 20. Specifically, the support column 21 and... Figure 3 The connecting part 11 at the middle position shown is rotatably connected. The first support rod 22 is detachably connected to the connecting part 11 on one side, and the second support rod 23 is detachably connected to the connecting part 11 on the other side. The first support rod 22 and the second support rod 23 are locked by fixing pins to fix the photovoltaic module 10 in a specific position, where the photovoltaic module 10 is in an unflipped state. When it is necessary to switch the light-receiving surface and the backlight surface of the photovoltaic module 10, the fixing pins on the first support rod 22 and the second support rod 23 are released. Then, by driving the photovoltaic module 10 or driving the first support rod 22 or the second support rod 23, the photovoltaic module is rotated around... Figure 2 As shown, when the axis L rotates, the first support rod 22 and the second support rod 23 will also rotate synchronously during the rotation of the photovoltaic module 11. Furthermore, the first support rod 22 and the second support rod 23 will extend or retract, thereby achieving the purpose of switching the orientation of the light-receiving surface and the backlight surface of the photovoltaic module 10. After the switching is completed, the first support rod 22 and the second support rod 23 are then fixed to the support column 21 again by fixing pins, so that the photovoltaic module 10 is back in the unflipped state.

[0074] The above steps are provided only to help understand the method, structure, and core idea of ​​this utility model. For those skilled in the art, various improvements and modifications can be made to this utility model without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of this utility model.

Claims

1. A photovoltaic power generation system, characterized in that, include: Photovoltaic module (10) and two support structures (20) connected to said photovoltaic module (10), wherein, The two support structures (20) correspond to the two opposite sides of the frame of the photovoltaic module (10); The support structure (20) is arranged opposite to and fixed to the base (50) or the ground, and the support structure (20) is rotatably connected to its corresponding frame side, so that the photovoltaic module (10) is rotated around the rotatably connected position under external drive, so as to switch the light-receiving surface and the back-lighting surface of the photovoltaic module (10) facing each other. When the photovoltaic module (10) is in an unflipped state, each of the support structures (20) and its corresponding side frame form at least one triangular structure to stably fix the photovoltaic module (10) through the support structure (20).

2. The photovoltaic power generation system according to claim 1, characterized in that, The photovoltaic module (10) has multiple connecting parts (11) on the two opposite sides of its frame. The two support structures (20) correspond to the two side frames with the connecting parts (11); The support structure (20) is rotatably connected to one of the connecting parts (11) on the corresponding side of the frame; When the photovoltaic module (10) is in an unflipped state, the support structure (20) is detachably connected to other unconnected connecting parts (11) on the side of the frame, so that the support structure (20) and its corresponding side of the frame form at least one triangular structure.

3. The photovoltaic power generation system according to claim 1 or 2, characterized in that, Each of the support structures (20) includes: a support column (21), a first support rod (22), and a second support rod (23); One end of the supporting column (21) is fixed to the base or the ground; The other end of the support column (21) is rotatably connected to the side of the frame corresponding to the support structure (20); One end of the first support rod (22) and one end of the second support rod (23) are connected to the support column (21); The other end of the first support rod (22) and the other end of the second support rod (23) are detachably connected to the side of the frame corresponding to the support structure (20), so that the first support rod (22), the support column (21) and the connected side of the frame form a first triangular structure, and the second support rod (23), the support column (21) and the connected side of the frame form a second triangular structure. The first triangular structure and the second triangular structure are located on both sides of the support column (21).

4. The photovoltaic power generation system according to claim 3, characterized in that, The position where the supporting column (21) is rotatably connected to the side of the supporting structure (20) is located at the center of the side of the side of the frame; And / or, The other end of the first support rod (22) and the other end of the second support rod (23) are symmetrical about the center of the side of the frame with respect to the detachable connection position of their corresponding side of the frame.

5. The photovoltaic power generation system according to claim 3, characterized in that, The photovoltaic power generation system also includes: a lead wire placement groove (30) set on the top of the support column (21); The lead wire placement slot (30) is used to place the electrode leads of the photovoltaic module (10).

6. The photovoltaic power generation system according to claim 3, characterized in that, The lengths of the first support rod (22) and the second support rod (23) are fixed. One end of the first support rod (22) and one end of the second support rod (23) are fixedly connected to the support column (21). After the other end of the first support rod (22) and the other end of the second support rod (23) are disconnected from the side of the frame corresponding to the support structure (20), the photovoltaic module (10) can be rotated around the pivot position under external drive. or, The first support rod (22) and the second support rod (23) are both telescopic rods with adjustable length. One end of the first support rod (22) and one end of the second support rod (23) are rotatably connected to the opposite sides of the support column (21). The rotation of the first support rod (22), the extension and retraction of the first support rod, the rotation of the second support rod (23) and the extension and retraction of the second support rod (23) assist the photovoltaic module (10) in flipping.

7. The photovoltaic power generation system according to claim 6, characterized in that, Also includes: micro drives, The micro-driver is used to drive the photovoltaic module (10) to flip; or, The micro actuator is used to drive the first support rod (22) to rotate; or, The micro actuator is used to drive the second support rod (23) to rotate.

8. The photovoltaic power generation system according to claim 1, characterized in that, The photovoltaic power generation system further includes: drainage holes (12) disposed on the frame of the photovoltaic module (10); The side of the frame where the drainage hole (12) is located is not the side of the frame connected to the support structure (20); The drain hole (12) is used to drain the water that has accumulated on the photovoltaic module (10).

9. The photovoltaic power generation system according to claim 3, characterized in that, One end of the first support rod (22) and one end of the second support rod (23) are connected to the support column (21) through a first cylindrical mounting head (24) and a first assembly hole; The other end of the first support rod (22) and the other end of the second support rod (23) are rotatably connected to the side of the frame corresponding to the support structure (20) through the second column connector (25) and the matching second mounting hole.

10. The photovoltaic power generation system according to claim 9, characterized in that, The length of the first cylindrical mounting head (24) is 10mm~100mm, and the length of the second cylindrical connector (25) is 1.5mm~30mm; or / and, The diameter of the first mounting hole is 5mm to 25mm, and the diameter of the second mounting hole is 5mm to 25mm.

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