Connecting device and photovoltaic system

Abstract

The utility model discloses a connecting device and a photovoltaic system, relates to the technical field of photovoltaics, and aims to solve the problems that in the prior art, the operation space at the joint of a long frame and a reinforcing rib is small, manual riveting is difficult, and the assembling time is increased at the moment. The connecting device comprises a base plate, at least one connecting piece and at least one first limiting piece. The at least two substrates are oppositely arranged at intervals, the connecting piece is provided with two opposite ends, and the two ends of the connecting piece are connected with the substrates respectively. The at least one first limiting piece is arranged on the substrate, and the first limiting piece protrudes relative to the substrate. In the length direction of the substrate, the ratio of the distance between the first limiting piece and the end of the substrate to the length of the substrate is larger than or equal to 1 / 5 and smaller than or equal to 1 / 2.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic technology field especially relates to a connecting device and photovoltaic system. BACKGROUND

[0002] At present, in order to improve the load capacity of photovoltaic module, usually set reinforcing rib on the basis of existing frame structure. For example, first fasten the vertical part of T-shaped connecting piece in the installation cavity that reinforcing rib has, then make the horizontal part of T-shaped connecting piece and long frame abut. The horizontal part of T-shaped connecting piece is previously provided with through hole, and long frame is previously provided with mounting hole, in the process of making the horizontal part of T-shaped connecting piece and long frame abut, need to align the through hole and mounting hole. Then, the rivet is made rivet penetrates through through hole and mounting hole by artificial beating simultaneously, to make the horizontal part of T-shaped connecting piece and long frame fastening connection.

[0003] But, because the operation space is small at long frame and reinforcing rib connecting place, artificial beating rivet is difficult, at this time, it will increase the assembly time. UTILITY MODEL CONTENTS

[0004] The utility model discloses a kind of connecting device and photovoltaic system, for shorten the assembly time between reinforcing rib and frame, improve assembly efficiency.

[0005] To achieve the above object, first, the utility model provides a kind of connecting device. The connecting device includes: substrate, at least one connecting piece and at least one first limiting piece. At least two substrates are oppositely and interval arranged, connecting piece has opposite two ends, and the two ends of connecting piece are connected with substrate respectively. At least one first limiting piece is arranged in substrate, and first limiting piece is protruding relative to substrate. Along the length direction of substrate, the ratio between the distance between first limiting piece and the end of substrate and the length of substrate is greater than or equal to 1 / 5 and less than or equal to 1 / 2.

[0006] The connecting device can be used to connect a door and a door frame, or a window and a window frame, or a reinforcing rib and a frame. The reinforcing rib and the frame are taken as examples for description, and it should be understood that the following description is only for explanation and not as a limitation. It should be noted that the reinforcing rib in the prior art has a mounting cavity for connecting with the connecting device, and the frame has a cavity. Before actual assembly, a mounting hole is pre-formed on the side of the frame opposite to the connecting device (for the sake of subsequent description, the side is referred to as a mounting surface), and the mounting hole is in communication with the cavity. During actual assembly, the base plate on one side of the first limiting piece is first inserted into the mounting cavity of the reinforcing rib, so that a part of the connecting device is connected with the reinforcing rib. Then, the base plate on the other side of the first limiting piece is inserted through the mounting hole, so that another part of the connecting device is connected with the frame. Compared with the prior art in which a rivet is manually riveted to simultaneously pass through the through hole and the mounting hole, in the present application, the worker only needs to install the connecting device in the mounting hole and the mounting cavity, respectively, without the need for manual riveting, which is simple, convenient, easy to operate, shortens the assembly time between the reinforcing rib and the frame, improves the assembly efficiency, and saves costs. Further, compared with the prior art in which a T-shaped connecting piece and a rivet need to be simultaneously matched to achieve the connection between the reinforcing rib and the frame, the present application only needs to use the connecting device, thereby saving the number of workpieces. Further, along the length direction of the base plate, the ratio between the distance between the first limiting piece and the end of the base plate and the length of the base plate is greater than or equal to 1 / 5 and less than or equal to 1 / 2, so that the connection firmness of the connecting device with the reinforcing rib and the frame can meet actual needs.

[0007] In an implementation manner, the connecting device comprises two connecting pieces arranged oppositely and spaced apart. The first ends of the two connecting pieces are connected with the one ends of the two base plates respectively, and the second ends of the two connecting pieces are connected with the other ends of the two base plates respectively. Along the length direction of the base plate, the base plate comprises a first base plate, a second base plate and a third base plate. The two ends of the second base plate are connected with the first base plate and the third base plate respectively, and the first limiting piece is arranged on the second base plate and protrudes along the thickness direction of the base plate relative to the first base plate and the third base plate.

[0008] In actual use, the first base plate is inserted through the mounting hole to be connected with the frame, and the third base plate is inserted into the mounting cavity of the reinforcing rib to be connected with the reinforcing rib. The first limiting piece arranged on the second base plate is used to limit the length of the third base plate connected with the reinforcing rib and the length of the first base plate connected with the frame, so that the connection firmness of the connecting device with the reinforcing rib and the frame can meet actual needs.

[0009] In an implementation manner, the outer side surface of at least one first base plate and / or at least one third base plate has a first clamping piece.

[0010] With the above technical solutions, the firmness and stability of the connection device and the reinforcing rib and / or the frame are improved, and relative movement of the connection device and the reinforcing rib and / or the connection device and the frame is reduced or avoided. Thus, the reinforcing rib can improve the bending resistance of the photovoltaic module when the photovoltaic module is subjected to a load, thereby improving the load capacity of the photovoltaic module. Further, when the outer side of the first substrate or the third substrate connected with the frame has the first clamping piece, a part of the connection device can be fastened with the frame. Alternatively, when the outer side of the at least one first substrate and the at least one third substrate both have the first clamping piece, a part of the connection device can be fastened with the reinforcing rib, and another part of the connection device can be fastened with the frame. At this time, the probability that the two ends of the reinforcing rib for connecting with the connection device are warped towards the laminated piece in the photovoltaic module when the reinforcing rib is subjected to pressure can be reduced or eliminated. Specifically, when the reinforcing rib is subjected to pressure, the part of the connection device fastened with the frame can be prevented from moving in the height direction of the frame. Further, the part of the connection device is further limited to move in the height direction of the frame under the cooperation of the first limiting piece. Since the other part of the connection device is connected with the reinforcing rib, the two ends of the reinforcing rib for connecting with the connection device can be prevented from being warped towards the laminated piece in the photovoltaic module by limiting the movement of the connection device in the height direction of the frame. Thus, stress concentration at the laminated piece can be avoided, and the laminated piece can be prevented from being damaged, thereby ensuring the safety of the laminated piece and the photovoltaic module, and avoiding failure of the photovoltaic module.

[0011] In an implementation manner, the outer side of the at least one first substrate and / or the at least one third substrate is a smooth transition surface.

[0012] In combination with the foregoing description, the outer side of the first substrate and / or the third substrate has more optional structures, thereby increasing the selectivity. Thus, the connection device can be adapted to different scenarios, thereby expanding the application range.

[0013] In an implementation manner, the first clamping piece includes a protruding piece or a groove.

[0014] In an implementation manner, when the first clamping piece includes a groove, the side wall of the groove is inclined towards the first limiting piece.

[0015] With the above technical solutions, during the connection of the first substrate and / or the third substrate with the frame or the reinforcing rib, the side wall of the groove is subjected to an external force. The groove provides a space for deformation of the side wall, and the direction of deformation of the side wall is consistent with the direction of the applied force during the connection of the connection device with the frame or the connection of the connection device with the reinforcing rib, thereby facilitating the assembly of the connection device and the frame or the reinforcing rib.

[0016] In an implementation, the connecting device comprises a connecting piece. Two ends of the connecting piece are connected to the ends of the two substrates along the length direction of the substrates. The substrate comprises a first part and a second part along the length direction of the substrate, and the first limiting piece is arranged on the first part and protrudes relative to the second part along the width direction of the substrate.

[0017] In actual use, the first parts of the two substrates are used to be connected to the frame, and at this time, the mounting holes formed on the mounting surface of the frame are matched in size and shape with the structure combined by the first parts of the two substrates and the first limiting pieces. Compared with forming one large mounting hole for penetrating the first parts of the two substrates and the two first limiting pieces at the same time, the total size of the two mounting holes formed in the present application is smaller than that of the large mounting hole, and at this time, the damage of the mounting holes to the frame can be reduced, and the quality of the photovoltaic module is improved.

[0018] In an implementation, the connecting device comprises a connecting piece. Two ends of the connecting piece are connected to the ends of the two substrates along the length direction of the substrates. The substrate comprises a first part and a second part along the length direction of the substrate, and the first limiting piece is arranged on the first part and protrudes relative to the second part along the width direction of the substrate.

[0019] In combination with the foregoing description, the specific structure of the connecting device has three different options, which increases the selectivity. Based on this, the connecting device can be adapted to different scenarios, thereby expanding its application range.

[0020] In an implementation, the connecting device further comprises a second clamping piece. The second clamping piece is arranged at the two ends of the substrate along the length direction of the substrate. The vertical distance between the second clamping piece and the substrate along the thickness direction of the substrate gradually increases in the direction close to the central region of the substrate.

[0021] In the case of adopting the above technical solution, the connecting device is suitable for various types of mounting holes such as waist-shaped mounting holes or strip-shaped mounting holes, so that the connecting device can adapt to different scenarios, thereby further expanding its application range. Further, when the second clamping piece penetrates the mounting hole, the second clamping piece can also prevent the connecting device from being pulled out of the frame along the length direction of the substrate.

[0022] In an implementation, the second clamping piece and the substrate have an included angle, and the included angle is greater than or equal to 10° and less than or equal to 40°.

[0023] In an implementation, the connecting device further comprises a second limiting piece arranged on the side of the connecting piece away from the substrate. The first limiting piece and the second limiting piece correspond to each other along the width direction of the substrate.

[0024] In actual use, the second limiting member cooperates with the first limiting member, at this time, the length of the connecting device connected with the frame and the reinforcing rib can be limited, so as to ensure that the connecting firmness of the connecting device with the reinforcing rib and the frame meets the actual needs.

[0025] In a second aspect, the utility model also provides a photovoltaic system. The photovoltaic system includes a photovoltaic assembly, a reinforcing member and the connecting device of the above technical scheme. The photovoltaic assembly includes a laminated member and a frame installed around the laminated member, and the reinforcing member is opposite to the laminated member and is spaced apart. The connecting device is used for pre-connecting the two ends of the reinforcing member and the frame to assist the reinforcing member and the laminated member in fastening connection.

[0026] Compared with the prior art, the photovoltaic system provided by the utility model has the same beneficial effects as the connecting device of the above technical scheme, which will not be repeated here. Further, since the connecting device is used for pre-connecting the two ends of the reinforcing member and the frame to assist the reinforcing member and the laminated member in fastening connection. Therefore, when the photovoltaic assembly is under pressure, the reinforcing member can increase the structural strength of the photovoltaic assembly and improve the bending resistance of the photovoltaic assembly, the connecting device can provide the shear resistance, and the deformation of the reinforcing member is prevented from being too large to cause the load failure of the photovoltaic assembly, thereby improving the load capacity of the photovoltaic assembly.

[0027] In an implementation manner, the ratio of the position of the reinforcing member relative to the frame to the length of the frame is greater than or equal to 1 / 5 and less than or equal to 1 / 3.

[0028] In the case of the above technical scheme, the reinforcing member is arranged at 1 / 5 to 1 / 3 of the frame, at this time, the reinforcing member can improve the bending resistance of the photovoltaic assembly when the photovoltaic assembly is under load, thereby improving the load capacity of the photovoltaic assembly.

[0029] In an implementation manner, the frame includes: first side plates and second side plates arranged at intervals along the width direction of the frame. Support plates and bottom plates arranged opposite and at intervals along the height direction of the frame. The support plates, the first side plates, the bottom plates and the second side plates form a cavity. The support plates are used for bearing the laminated member, and the second side plates are provided with mounting holes; the first part of the connecting device penetrates through the mounting holes.

[0030] In an implementation manner, the reinforcing member includes: first connecting plates and second connecting plates arranged at intervals along the width direction of the reinforcing member; third connecting plates and fourth connecting plates arranged opposite and at intervals along the height direction of the reinforcing member; two fifth connecting plates arranged opposite and at intervals along the height direction of the reinforcing member; the fifth connecting plates are connected with the first connecting plates and the second connecting plates along the width direction of the reinforcing member; and mounting cavities are formed between the first connecting plates, the second connecting plates and the fifth connecting plates. The frame includes two long frames arranged opposite and two short frames arranged opposite; the first part of the connecting device is connected with the long frame and / or the short frame, and the second part of the connecting device is located in the mounting cavity.

[0031] According to the technical scheme, the relative position relationship between the reinforcing member, the long side frame and the short side frame is not limited, and the actual needs are met, so that the selection is increased for actual use. BRIEF DESCRIPTION OF DRAWINGS

[0032] The accompanying drawings, which are included to provide a further understanding of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and serve to explain the present application. In the drawings:

[0033] Figure 1 A structure schematic view of a first connecting device in an embodiment of the present application;

[0034] Figure 2 A relative position relationship schematic view of the first connecting device and the first reinforcing rib before assembly in an embodiment of the present application;

[0035] Figure 3 A schematic view of the first connecting device and the first reinforcing rib after assembly in an embodiment of the present application;

[0036] Figure 4 A relative position relationship schematic view of the first connecting device, the reinforcing rib and the side frame before assembly in an embodiment of the present application;

[0037] Figure 5 A schematic view of the second connecting device and the reinforcing rib after assembly in an embodiment of the present application;

[0038] Figure 6 A structure schematic view of a third connecting device in an embodiment of the present application;

[0039] Figure 7 A first perspective view of the third connecting device in an embodiment of the present application;

[0040] Figure 8 A second perspective view of the third connecting device in an embodiment of the present application;

[0041] Figure 9 A relative position relationship schematic view of the third connecting device, the reinforcing rib and the side frame before assembly in an embodiment of the present application;

[0042] Figure 10 A schematic view of the third connecting device and the first reinforcing rib after assembly in an embodiment of the present application;

[0043] Figure 11 A structure schematic view of a fourth connecting device in an embodiment of the present application;

[0044] Figure 12 is a structural schematic view of the fifth connecting device in the embodiment of the utility model;

[0045] Figure 13 is a first perspective view of the fifth connecting device in the embodiment of the utility model;

[0046] Figure 14 is a second perspective view of the fifth connecting device in the embodiment of the utility model;

[0047] Figure 15 is a schematic view of relative position relation before assembly of the fifth connecting device, the reinforcing rib and the frame in the embodiment of the utility model;

[0048] Figure 16 is a structural schematic view of the first reinforcing rib in the embodiment of the utility model;

[0049] Figure 17 is a front view of the first reinforcing rib in the embodiment of the utility model;

[0050] Figure 18 is a front view of the second reinforcing rib in the embodiment of the utility model;

[0051] Figure 19 is a schematic view after assembly of the first connecting device, the reinforcing rib and the frame in the embodiment of the utility model;

[0052] Figure 20 is a schematic view of relative position relation of the frame and the two reinforcing ribs in the embodiment of the utility model.

[0053] Reference signs:

[0054] 1-connecting device, 10-substrate, 100-first substrate, 101-second substrate, 102-third substrate, 103-first part, 104-second part; 11-connecting piece, 12-first limiting piece, 13-first clamping piece, 14-second clamping piece, 15-second limiting piece; 2-reinforcing rib, 20-mounting cavity, 21-protrusion, 22-first connecting plate, 23-second connecting plate, 24-third connecting plate, 25-fourth connecting plate, 26-fifth connecting plate; 3-frame, 30-cavity, 31-mounting hole, 310-waist-shaped mounting hole, 311-strip-shaped mounting hole, 32-long frame, 33-short frame, 34-first side plate, 35-second side plate, 36-supporting plate, 37-bottom plate, 38-limiting groove. DETAILED DESCRIPTION

[0055] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application and not to limit the present application.

[0056] It should be noted that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0057] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more than two, unless otherwise explicitly specified. The meaning of "several" is one or more than one, unless otherwise explicitly specified.

[0058] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0059] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0060] In order to solve the above technical problems, in a first aspect, the present application provides a connecting device. Referring to Figures 1 to 13The connecting device 1 comprises a base plate 10, at least one connecting piece 11 and at least one first limiting piece 12. The at least two base plates 10 are oppositely and spacedly arranged, the connecting piece 11 has two opposite ends, and the two ends of the connecting piece 11 are connected with the base plates 10 respectively. The at least one first limiting piece 12 is arranged on the base plate 10, and the first limiting piece 12 protrudes relative to the base plate 10. The ratio of the distance between the first limiting piece 12 and the end of the base plate 10 to the length of the base plate 10 is greater than or equal to 1 / 5 and less than or equal to 1 / 2. For example, the ratio can be 1 / 5, 1 / 4, 3 / 10, 7 / 20, 2 / 5, 9 / 20 or 1 / 2, etc.

[0061] As a possible implementation manner, the shapes and sizes of the base plate, the connecting piece and the first limiting piece are not specifically limited, as long as the actual needs can be met. For example, the three components can all be cuboid structures, or the connecting piece is a quadrangular frustum, or the first limiting piece is an irregular solid structure, etc.

[0062] When the cross section of the connecting piece is rectangular or trapezoidal, the two opposite ends of the connecting piece can be two ends oppositely distributed along the length direction of the rectangular cross section, or two ends oppositely distributed along the width direction of the rectangular cross section, or two ends oppositely distributed along the height direction of the trapezoidal cross section.

[0063] Further, a cavity can be formed between the connecting piece and the two base plates, or the two base plates can be in abutment, as long as the finally formed connecting device meets the actual needs. Figure 1 In the embodiment of the utility model, a cavity is formed between the connecting piece 11 and the two base plates 10. At this time, in the actual assembling process of the connecting device 1 and the frame 3 and the reinforcing rib 2, the connecting device 1 is subjected to external force, and the cavity provides space for the deformation of the connecting device 1, which is beneficial to the assembly of the connecting device 1 and the frame 3 and the reinforcing rib 2, and improves the assembly efficiency. Further, the first limiting piece is not located between the two base plates, i.e., the first limiting piece is not located in the cavity.

[0064] The connecting device can be used to connect a door and a door frame, or used to connect a window and a window frame, or used to connect a reinforcing rib and a frame. Hereinafter, the reinforcing rib and the frame are taken as examples for description, and it should be understood that the following description is only used for explanation, not as limitation. It should be noted that, referring to Figure 2 and Figure 4 The reinforcing rib 2 in the prior art has a mounting cavity 20 for connecting with the connecting device 1, and the frame has a cavity 30. Referring to Figures 1 to 19Before actual assembly, mounting holes 31 are pre-drilled on the side of the frame 3 opposite to the connecting device 1 (hereinafter referred to as the mounting surface for ease of description). The mounting holes 31 communicate with the cavity 30. During actual assembly, the substrate 10 located on one side of the first limiting member 12 is first inserted into the mounting cavity 20 of the reinforcing rib 2 so that a part of the connecting device 1 is connected to the reinforcing rib 2. Then, the substrate 10 located on the other side of the first limiting member 12 is inserted through the mounting hole 31 so that the other part of the connecting device 1 is connected to the frame 3. Compared with the prior art, which uses manual riveting to make the rivet pass through both the through hole and the mounting hole at the same time, in this application, the workers only need to install the connecting device 1 in the mounting hole 31 and the mounting cavity 20 respectively. There is no need for manual riveting, which is simple, convenient, easy to operate, shortens the assembly time between the reinforcing rib 2 and the frame 3, improves assembly efficiency, and saves costs. Furthermore, compared to existing technologies that require both T-shaped connectors and rivets to connect the reinforcing rib and the frame, this embodiment only requires the connecting device 1, saving on the number of workpieces. Moreover, along the length L of the substrate, the ratio between the distance between the first limiting member 12 and the end of the substrate 10 and the length of the substrate is greater than or equal to 1 / 5 and less than or equal to 1 / 2. This ensures that the connection between the connecting device 1 and the reinforcing rib 2 and the frame 3 is secure enough to meet practical requirements.

[0065] The number of the aforementioned connectors and first limiting members, as well as the relative positional relationships between the substrate, connectors, and first limiting members, can all be set according to actual conditions, as long as they meet the actual needs. The following description uses three possible scenarios as examples; it should be noted that the following descriptions are for understanding purposes only and are not intended to limit specific applications.

[0066] Example 1: See Figures 1 to 5 The connecting device 1 includes two opposing and spaced-apart connectors 11. The first ends of the two connectors 11 are respectively connected to one end of the two substrates 10, and the second ends of the two connectors 11 are respectively connected to the other ends of the two substrates 10. Along the length L of the substrates, the substrates 10 include a first substrate 100, a second substrate 101, and a third substrate 102. The two ends of the second substrate 101 are respectively connected to the first substrate 100 and the third substrate 102. A first limiting member 12 is disposed on the second substrate 101, protruding along the thickness direction of the substrate relative to the first substrate 100 and the third substrate 102. In actual use, the first substrate 100 passes through the mounting hole 31 and connects to the frame 3, while the third substrate 102 extends into the mounting cavity 20 of the reinforcing rib 2 and connects to the reinforcing rib 2. The first limiting member 12 disposed on the second substrate 101 is used to limit the length of the third substrate 102 connected to the reinforcing rib 2 and the length of the first substrate 100 connected to the frame 3, to ensure that the connection between the connecting device 1 and the reinforcing rib 2 and the frame 3 is firm enough to meet actual requirements.

[0067] For example, referring to Figure 1 and Figure 5 , along a vertical direction A from one substrate to another substrate, the second substrate 101 comprises opposite first and second surfaces, the first surface being located between the second surface and the other substrate. Along a width direction of the substrate, the second substrate 101 comprises opposite third and fourth surfaces. For one second substrate 101, the above-mentioned first limiting piece 12 can be arranged on the second surface only, or on the third surface only, or on the fourth surface only, of course, the first limiting piece 12 can be arranged on any two of the second surface, the third surface and the fourth surface, or the first limiting piece 12 can be arranged on the second surface, the third surface and the fourth surface at the same time, as long as the function of the first limiting piece 12 of limiting the proportion of the connection of the substrate with the frame and the reinforcing piece can be realized. When the connecting device 1 comprises two first limiting pieces 12, the relative position relationship between the other first limiting piece 12 and the other second substrate 101 is the same, which will not be described here. It should be noted that when the connecting device 1 comprises two first limiting pieces 12, the positions of the two first limiting pieces 12 relative to the two second substrates 101 can be the same or different, and the shapes and sizes of the two first limiting pieces 12 can be the same or different. Referring to Figure 1 and Figure 5 , in the embodiment of the utility model, the connecting device 1 comprises two first limiting pieces 12, and the two first limiting pieces 12 are arranged on the second surfaces of the two second substrates 101 respectively, and the two first limiting pieces 12 are symmetrically distributed along the length direction L of the substrate.

[0068] Further, referring to Figure 1 and Figure 5 , the outer side surface of the at least one first substrate 100 and / or the at least one third substrate 102 has a first clamping piece 13, or the outer side surface of the at least one first substrate 100 and / or the at least one third substrate 102 is a smooth transition surface. Therefore, the specific structure of the outer side surface of the first substrate 100 and / or the third substrate 102 has more optional, which increases the selectivity. Based on this, the connecting device 1 can adapt to different scenes, thereby expanding its application range.

[0069] When the outer side surface of the at least one first substrate and / or the at least one third substrate is a smooth transition surface, the above-mentioned smooth transition surface comprises a plane, a circular arc surface or a curved surface, etc.

[0070] Referring to Figures 1 to 5When the outer side of the at least one first substrate 100 and / or the at least one third substrate 102 is provided with the first clamping member 13, the connection between the connection device 1 and the reinforcing rib 2 and / or the frame 3 is improved in stability and firmness, and the relative movement between the connection device 1 and the reinforcing rib 2 and / or the connection device 1 and the frame 3 is reduced or avoided. In this way, the reinforcing rib 2 can improve the bending resistance of the photovoltaic module when the photovoltaic module is subjected to a load, thereby improving the load capacity of the photovoltaic module. Further, when the outer side of the first substrate 100 or the third substrate 102 connected with the frame 3 is provided with the first clamping member 13, a part of the connection device 1 can be tightly connected with the frame 3. Alternatively, when the outer side of the at least one first substrate 100 and the at least one third substrate 102 is provided with the first clamping member 13, a part of the connection device 1 can be tightly connected with the reinforcing rib 2, and another part of the connection device 1 can be tightly connected with the frame 3. In this way, the probability that the two ends of the reinforcing rib 2 for connecting with the connection device 1 are warped towards the laminated member in the photovoltaic module when the reinforcing rib 2 is subjected to a pressure can be reduced or eliminated. Specifically, when the reinforcing rib 2 is subjected to a pressure, the part of the connection device 1 tightly connected with the frame 3 can be prevented from moving along the height direction of the frame. Further, the movement of the part of the connection device 1 along the height direction of the frame 3 is further limited by the first limiting member 12. Since the other part of the connection device 1 is connected with the reinforcing rib 2, the movement of the connection device 1 along the height direction of the frame can limit the two ends of the reinforcing rib 2 for connecting with the connection device 1 from being warped towards the laminated member in the photovoltaic module. In this way, the stress concentration at the laminated member can be avoided, and the laminated member can be prevented from being damaged, thereby ensuring the safety of the laminated member and the photovoltaic module, and avoiding the failure of the photovoltaic module.

[0071] In an alternative way, the first clamping member includes a protrusion or a groove. The protrusion and the groove can be integrally formed with the substrate, or can be additionally provided later, which is not limited here as long as the actual needs can be met.

[0072] When the first clamping member includes a plurality of protrusions spaced apart along the length direction of the substrate, the protrusions are inclined towards the first limiting member. In this way, during the connection between the first substrate and / or the third substrate and the frame or the reinforcing rib, the protrusions are subjected to an external force, and the gap between the adjacent two protrusions provides a space for the deformation of the protrusions. Further, the direction of the deformation of the protrusions is consistent with the direction of the force applied during the connection between the connection device and the frame or the connection between the connection device and the reinforcing rib, which is beneficial to the assembly of the connection device and the frame or the reinforcing rib.

[0073] Referring to Figure 1 and Figure 5When the first clamping piece 13 comprises a groove, the side wall of the groove is inclined towards the first limiting piece 12. In the process of connecting the first substrate 100 and / or the third substrate 102 with the frame 3 or the reinforcing rib 2, the side wall of the groove is subjected to external force, the groove provides space for the deformation of the side wall, and the deformation direction of the side wall is consistent with the direction of the force applied in the process of connecting the connecting device 1 with the frame or the process of connecting the connecting device 1 with the reinforcing rib 2, which is conducive to the assembly of the connecting device 1 and the frame or the reinforcing rib 2.

[0074] Further, referring to Figure 1 and Figure 5 , the height of the connecting piece 11 gradually decreases in the direction away from the first limiting piece 12, and the height direction of the connecting piece 11 is consistent with the vertical direction A of one substrate towards another substrate.

[0075] For example, in the height direction of the connecting piece, the cross-sectional shape of the connecting piece can be triangular, trapezoidal (see Figure 1 ), trapezoidal (see Figure 5 ) or other polygonal structures. Referring to Figure 1 , in the embodiment of the utility model, the cross-sectional shape of the connecting piece 11 is trapezoidal. Specifically, the cross section of the connecting piece 11 has an upper base and a lower base, and the line segment connecting the upper and lower bases is an arc segment, and the central angle corresponding to the arc segment is located in the connecting device 1. In the actual assembly process, the smaller end of the connecting piece 11 enters the mounting hole 31 of the frame or the mounting cavity 20 of the reinforcing piece first, which plays a guiding role. Then, the arc segment part of the connecting piece 11 gradually enters the mounting hole 31 or the mounting cavity 20. The connecting piece 11 with the above shape is convenient to install, and improves the assembly efficiency of the connecting device 1 and the reinforcing rib 2 and the frame.

[0076] Further, referring to Figure 4 , the shape of the mounting hole 31 opened on the mounting surface of the frame 3 is designed according to the shape of the connecting part of the connecting device 1 and the frame 3. For the connecting device 1 described in example one, the mounting hole 31 is a waist-shaped mounting hole 310. The cross section of the above waist-shaped mounting hole 310 is elliptical, wherein the length of the major axis of the elliptical shape is greater than or equal to the sum of the thicknesses of the two substrates plus the sum of the spacing between the two substrates, and the length of the minor axis of the elliptical shape is greater than or equal to the width of the connecting device 1. For example, the length of the major axis of the elliptical shape is 16mm, and the length of the minor axis is 8mm.

[0077] The structure of the connecting device in example one and its specific use will be described below by taking two possible embodiments as examples. It should be understood that the following description is for understanding only and is not used for specific definition.

[0078] The first kind: referring to Figure 1The connecting device 1 comprises two connecting pieces 11 arranged oppositely and spaced apart. The first ends of the two connecting pieces 11 are connected with one end of the two base plates 10 respectively, and the second ends of the two connecting pieces 11 are connected with the other end of the two base plates 10 respectively. Along the length direction L of the base plate, the base plate 10 comprises a first base plate 100, a second base plate 101 and a third base plate 102, and the two ends of the second base plate 101 are connected with the first base plate 100 and the third base plate 102 respectively. The connecting device 1 comprises two first limit pieces 12, and the two first limit pieces 12 are arranged on the second surface of the two second base plates 101 respectively. The two first limit pieces 12 are symmetrically distributed along the length direction L of the base plate, and the first limit piece 12 protrudes along the thickness direction of the base plate relative to the first base plate 100 and the third base plate 102. The outer side surface of the two first base plates 100 is a circular arc surface; the outer side surface of the two third base plates 102 has a groove, and the side wall of the groove is inclined towards the first limit piece 12. The cross-sectional shape of the connecting piece 11 is similar to a trapezoid. Specifically, the cross section of the connecting piece 11 has an upper base and a lower base, and the line segment connecting the upper base and the lower base is an arc segment, and the central angle corresponding to the arc segment is located in the connecting device 1. Moreover, along the direction away from the first limit piece 12, the height of the connecting piece 11 gradually decreases, and the height direction of the connecting piece 11 is consistent with the vertical direction A of one base plate towards another base plate.

[0079] Referring to Figures 2 to 4 In the actual assembly process, the first base plate 100 is connected with the frame 3 through the waist-shaped mounting hole 310, and the third base plate 102 is connected with the reinforcing rib 2 by extending into the mounting cavity 20 of the reinforcing rib 2. Since the outer side surface of the third base plate 102 has a groove, and the inner wall of the mounting cavity 20 has a protrusion 21 matched with the groove, the third base plate 102 can be in interference fit with the mounting cavity 20, so that the connecting device 1 and the reinforcing rib 2 have a certain pulling force after being connected. Along the width direction W1 of the base plate, the outer side wall of the third base plate 102 abuts against the inner side wall of the mounting cavity 20, so that the third base plate 102 can be prevented from shaking relative to the reinforcing rib 2 along the width direction of the base plate. The second base plate 101 and the first limit piece 12 are located between the reinforcing rib 2 and the frame, and the side wall of the first limit piece 12 abuts against the reinforcing rib 2 and the frame respectively.

[0080] Secondly, referring to Figure 5The connecting device 1 comprises two connecting members 11 arranged oppositely and spaced apart. The first ends of the two connecting members 11 are connected with one end of the two base plates 10 respectively, and the second ends of the two connecting members 11 are connected with the other end of the two base plates 10 respectively. Along the length direction L of the base plate, the base plate 10 comprises a first base plate 100, a second base plate 101 and a third base plate 102, and the two ends of the second base plate 101 are connected with the first base plate 100 and the third base plate 102 respectively. The connecting device 1 comprises two first limit members 12, and the two first limit members 12 are arranged on the second surface of the two second base plates 101 respectively. The two first limit members 12 are symmetrically distributed along the length direction L of the base plate, and the first limit member 12 protrudes along the thickness direction of the base plate relative to the first base plate 100 and the third base plate 102. The outer side surface of the two first base plates 100 and the two third base plates 102 are provided with grooves respectively, and the side walls of the grooves are inclined towards the first limit member 12. The cross-sectional shape of the connecting member 11 is trapezoidal, and the height of the connecting member 11 gradually decreases along the direction away from the first limit member 12. The height direction of the connecting member 11 is consistent with the vertical direction A of one base plate towards another base plate.

[0081] Referring to Figures 5 In the actual assembly process, the first base plate 100 is connected with the frame through the waist-shaped mounting hole 310. Since the outer side surface of the first base plate 100 is provided with a groove, the first base plate 100 can be tightly connected with the frame, thereby preventing the connecting device 1 from falling off from the frame due to the force acting along the length direction of the base plate. The third base plate 102 is connected with the reinforcing rib 2 by extending into the mounting cavity 20 of the reinforcing rib 2. Since the outer side surface of the third base plate 102 is provided with a groove, and the inner wall of the mounting cavity 20 is provided with a protrusion 21 matching the groove, the third base plate 102 can be interference-fitted with the mounting cavity 20, so that the connecting device 1 and the reinforcing rib 2 have a certain pulling force after being connected. Along the width direction of the base plate, the outer side wall of the third base plate 102 abuts against the inner side wall of the mounting cavity 20, so that the third base plate 102 can be prevented from shaking relative to the reinforcing rib 2 along the width direction of the base plate. The second base plate 101 and the first limit member 12 are located between the reinforcing rib 2 and the frame, and the side walls of the first limit member 12 abut against the reinforcing rib 2 and the frame respectively.

[0082] Example two: referring to Figures 6 to 11The connecting device 1 comprises a connecting piece 11. Two ends of the connecting piece 11 are connected with two ends of the two substrates 10 along the length direction L of the substrates. The substrate 10 comprises a first part 103 and a second part 104 along the length direction L of the substrate, and the first limiting piece 12 is arranged on the first part 103 and protrudes along the width direction of the substrate relative to the second part 104. In actual use, the first part 103 of the two substrates 10 is used to be connected with the frame 3, and at this time, the size and shape of the structure combined by the mounting hole 31 arranged on the mounting surface of the frame 3 and the first part 103 of the substrate and the first limiting piece 12 are matched. Compared with arranging one large mounting hole for simultaneously penetrating the first part 103 of the two substrates and the two first limiting pieces 12, the total size of the two mounting holes 31 arranged in the present application is smaller than that of one large mounting hole, and at this time, the damage of the mounting hole 31 to the frame 3 can be reduced, and the quality of the photovoltaic module can be improved.

[0083] In an optional mode, referring to Figure 6 and Figure 11 , the length of the first limiting piece 12 is less than or equal to the length of the first part 103 along the length direction L of the substrate. Further, the position of the first limiting piece 12 relative to the first part 103 can be set according to actual conditions.

[0084] For example, referring to Figure 6 , the two ends of the first limiting piece 12 coincide with the two ends of the first part 103 along the length direction L of the substrate. Alternatively, referring to Figure 11 , the first end of the first limiting piece 12 is located at the junction of the first part 103 and the second part 104, and the second end of the first limiting piece 12 is located at any position in the middle of the first part 103 along the length direction L of the substrate. Alternatively, the first end of the first limiting piece 12 is located at one end of the first part 103 away from the second part 104, and the second end of the first limiting piece 12 is located at any position in the middle of the first part 103 along the length direction L of the substrate.

[0085] In an optional mode, referring to Figure 6 and Figure 11, along a vertical direction A (i.e. the thickness direction of the substrate) from one substrate to another substrate, the first portion 103 of the substrate 10 comprises opposite first and second surfaces, the first surface being located between the second surface and the other substrate. Along a width direction W1 of the substrate, the first portion 103 comprises opposite third and fourth surfaces. For the first portion 103 of one substrate, the first limiting member 12 can be provided on the second surface only, or on the third surface only, or on the fourth surface only, or on any two of the second, third and fourth surfaces, or on all of the second, third and fourth surfaces, as long as the first limiting member 12 can limit the proportion of the substrate connected to the frame and the reinforcing member, respectively. When the connecting device 1 comprises a plurality of first limiting members 12, the relative positions of the other first limiting members 12 and the first portion 103 of the other substrate are the same, which will not be described here. It should be noted that when the connecting device 1 comprises four first limiting members 12, the positions of the four first limiting members 12 relative to the first portions 103 of the two substrates can be the same or different, and the shapes and sizes of the four first limiting members 12 can be the same or different. Referring to Figure 6 and Figure 11 In the embodiments of the present application, the connecting device 1 comprises four first limiting members 12, and the four first limiting members 12 are respectively provided on the third and fourth surfaces of the first portion 103 of the two substrates 10, and the two first limiting members 12 provided on the first portion 103 of the same substrate 10 are symmetrically distributed along the length direction L of the substrate.

[0086] In an optional manner, referring to Figures 6 to 11 The two substrates 10 and the connecting member 11 are all cuboid structures. Further, the mounting holes 31 provided on the mounting surface of the frame 3 are designed according to the shape of the part connected to the frame in the connecting device 1. For the connecting device 1 described in Example 2, the mounting holes 31 are two strip-shaped mounting holes 311 (e.g. rectangular mounting holes) distributed at intervals. The length of the strip-shaped mounting hole 311 is greater than or equal to the sum of the width of the substrate and the width of the first limiting member 12, and the width of the strip-shaped mounting hole 311 is greater than or equal to the thickness of the connecting device 1.

[0087] The structure of the connecting device in Example 2 and its specific use will be described below by way of two possible embodiments, and it should be understood that the following description is only for understanding and does not specifically limit.

[0088] The first kind: referring to Figure 6The connecting device 1 comprises a connecting piece 11. The two ends of the connecting piece 11 are connected with the two ends of the two substrates 10 along the length direction L of the substrate. The substrate 10 comprises a first part 103 and a second part 104 along the length direction L of the substrate, and the first limiting piece 12 is arranged on the first part 103 and protrudes along the width direction of the substrate relative to the second part 104. The connecting piece 11 and the substrate 10 are both cuboid structures. The two ends of the first limiting piece 12 coincide with the two ends of the first part 103 along the length direction L of the substrate.

[0089] Referring to Figures 6 to 10 In the actual assembly process, the first part 103 of the substrate 10 is connected with the frame 3 through the strip-shaped mounting hole 311, and the second part 104 of the substrate 10 is inserted into the mounting cavity 20 of the reinforcing rib 2 and is in interference fit with the reinforcing rib 2, so that the connecting device 1 and the reinforcing rib 2 are connected and have a certain pulling force after the connection. After the assembly is completed, the side wall of the first limiting piece 12 close to the second part 104 abuts against the reinforcing rib 2. The outer side wall of the second part 104 of the substrate 10 abuts against the inner side wall of the mounting cavity 20 along the vertical direction A from one substrate to another substrate, so that the second part 104 of the substrate 10 can be prevented from shaking relative to the reinforcing rib 2 along the vertical direction A from one substrate to another substrate.

[0090] Secondly, referring to Figure 11 The connecting device 1 comprises a connecting piece 11. The two ends of the connecting piece 11 are connected with the two ends of the two substrates 10 along the length direction L of the substrate. The substrate 10 comprises a first part 103 and a second part 104 along the length direction L of the substrate, and the first limiting piece 12 is arranged on the first part 103 and protrudes along the width direction of the substrate relative to the second part 104. The connecting piece 11 and the substrate 10 are both cuboid structures. The first end of the first limiting piece 12 is located at the junction of the first part 103 and the second part 104 along the length direction L of the substrate, and the second end of the first limiting piece 12 is located at 1 / 3 of the first part 103 (the 1 / 3 is 1 / 3 of the length of the first part 103 along the direction from the second part 104 to the first part 103).

[0091] In the actual assembly process, the first part 103 of the substrate 10 on one side of the first limiting member 12 penetrates the strip-shaped mounting hole 311 and is connected with the frame, and the second part 104 of the substrate 10 extends into the mounting cavity 20 of the reinforcing rib 2 and is in interference fit with the reinforcing rib 2, so that the connecting device 1 and the reinforcing rib 2 have a certain pulling force after being connected. After assembly is completed, along the length direction L of the substrate, the two side walls of the first limiting member 12 abut against the reinforcing rib 2 and the frame, respectively. Along the vertical direction A from one substrate to another substrate, the outer side wall of the second part 104 of the substrate abuts against the inner side wall of the mounting cavity 20, at which time the situation that the second part 104 of the substrate shakes relative to the reinforcing rib 2 along the vertical direction from one substrate to another substrate can be reduced or avoided.

[0092] For the first and second connecting devices in Example Two, refer to Figure 6 , the length L1 of the connecting device is greater than or equal to 10 mm and less than or equal to 20 mm. Illustratively, the length L1 of the connecting device can be 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm or 20 mm, etc. Preferably, the length of the connecting device is 18 mm. The height H1 of the connecting device is greater than or equal to 6 mm and less than or equal to 10 mm. Illustratively, the height H1 of the connecting device can be 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm or 10 mm, etc. Preferably, the height of the connecting device is 8 mm. The height of the first limiting member is greater than or equal to 1 mm and less than or equal to 3 mm. Illustratively, the height of the first limiting member can be 1 mm, 1.3 mm, 1.5 mm, 1.7 mm, 2 mm, 2.3 mm, 2.5 mm, 2.7 mm or 3 mm, etc. Preferably, the height of the first limiting member is 1 mm.

[0093] Example Three: refer to Figure 12 , the connecting device 1 includes a connecting member 11. Along the width direction W1 of the substrate, the two ends of the connecting member 11 are connected with the side walls of the two substrates 10, respectively. Along the length direction L of the substrate, the substrate 10 includes a first part 103 and a second part 104, and the first limiting member 12 is arranged on the first part 103, and the first limiting member 12 protrudes relative to the second part 104 along the width direction of the substrate.

[0094] The arrangement position of the above-mentioned first limiting member relative to the first part of the substrate can refer to the description of this part in Example Two in the foregoing, which will not be repeated here.

[0095] Further, refer to Figures 12 to 15The connecting device 1 further comprises a second clamping piece 14. The second clamping piece 14 is arranged at both ends of the substrate 10 along the length direction L of the substrate. The vertical distance between the second clamping piece 14 and the substrate along the thickness direction of the substrate gradually increases along the direction close to the central region of the substrate.

[0096] In the above technical solution, the connecting device 1 is suitable for various types of mounting holes 31 such as the waist-shaped mounting hole 310 or the strip-shaped mounting hole 311 (for example, a rectangular mounting hole or other polygonal mounting hole), so that the connecting device 1 adapts to different scenes and further expands its application range. Further, when the second clamping piece 14 penetrates the mounting hole 31, the second clamping piece 14 can also prevent the connecting device 1 from being pulled out of the frame along the length direction of the substrate.

[0097] In an optional manner, referring to Figure 12 The second clamping piece 14 and the substrate 10 form an included angle B, and the included angle B is greater than or equal to 10° and less than or equal to 40°. For example, the included angle B can be 10°, 15°, 20°, 25°, 30°, 35° or 40°, etc.

[0098] Further, referring to Figure 12 The connecting device 1 can further comprise a second limiting piece 15 arranged on the side of the connecting piece 11 away from the substrate 10. The first limiting piece 12 and the second limiting piece 15 correspond to each other along the width direction W1 of the substrate. It should be noted that "corresponding to each other" here means that a second limiting piece 15 is arranged on the opposite side of the first limiting piece 12 along the width direction W1 of the substrate, and does not mean that the first limiting piece 12 and the second limiting piece 15 are completely the same in size, shape, arrangement angle, etc. In the embodiment of the utility model, the second limiting piece 15 is arranged on the connecting piece 11 along the vertical direction A from one substrate to another substrate.

[0099] In actual use, the second limiting piece 15 cooperates with the first limiting piece 12, which can limit the length of the connecting device 1 connected with the frame and the reinforcing rib 2 respectively, so as to ensure that the connection firmness of the connecting device 1 with the reinforcing rib 2 and the frame meets the actual needs.

[0100] In a second aspect, the utility model further provides a photovoltaic system. Referring to Figures 1 to 20 The photovoltaic system comprises a photovoltaic assembly, a reinforcing member and the connecting device 1 described in the above technical solution. The photovoltaic assembly comprises a laminated member and a frame 3 arranged around the laminated member, and the reinforcing member is opposite to the laminated member and is spaced apart. The connecting device 1 is used for pre-connecting the two ends of the reinforcing member and the frame 3, so as to assist the reinforcing member to be tightly connected with the laminated member.

[0101] The photovoltaic system has the beneficial effects of the connecting device 1, which will not be repeated here.

[0102] The number of the reinforcing members included in the photovoltaic system can be set according to actual conditions, for example, the photovoltaic system includes at least two reinforcing members that are opposite and spaced apart. In the case of the above technical solution, when the photovoltaic assembly is under pressure, the structural strength of the photovoltaic assembly can be further improved, the bending resistance of the photovoltaic assembly can be further improved, and the deformation of the reinforcing member can be reduced, thereby further improving the load capacity of the photovoltaic assembly.

[0103] As a possible implementation manner, the ratio of the position of the reinforcing member relative to the frame to the length of the frame is greater than or equal to 1 / 5 and less than or equal to 1 / 3. For example, the ratio can be 1 / 5, 7 / 30, 4 / 15, 3 / 10 or 1 / 3, etc.

[0104] In the case of the above technical solution, the reinforcing member is arranged at 1 / 5 to 1 / 3 of the frame, and at this time, the reinforcing member can improve the bending resistance of the photovoltaic assembly when the photovoltaic assembly is under load, thereby improving the load capacity of the photovoltaic assembly.

[0105] In the embodiment of the utility model, two symmetrically distributed reinforcing members are arranged on the photovoltaic assembly, and the two reinforcing members are located at 1 / 5 to 1 / 3 of the frame.

[0106] As a possible implementation manner, referring to Figures 16 to 18 The reinforcing member includes: a first connecting plate 22 and a second connecting plate 23 that are arranged at intervals along the width direction W3 of the reinforcing member; a third connecting plate 24 and a fourth connecting plate 25 that are opposite and arranged at intervals along the height direction H3 of the reinforcing member; two fifth connecting plates 26 that are opposite and arranged at intervals along the height direction H3 of the reinforcing member; and the fifth connecting plates 26 are connected to the first connecting plate 22 and the second connecting plate 23 along the width direction W3 of the reinforcing member. The first connecting plate 22, the second connecting plate 23 and the fifth connecting plate 26 form a mounting cavity 20.

[0107] Referring to Figure 20The above-mentioned frame includes two oppositely distributed long frames 32 and two oppositely distributed short frames 33, the first part of the connecting device is connected with the long frame and / or the short frame, and the second part of the connecting device is located in the mounting cavity 20. At this time, the reinforcing member intersects with the long frame 32 and / or the short frame 33 through the connecting device 1.

[0108] In the case of the above technical solution, the relative position relationship between the reinforcing member and the long frame 32 and the short frame 33 is not limited, as long as the actual needs are met, and the selectivity for actual use is increased.

[0109] Specifically, one reinforcing rib 2 is connected with two long frames 32 respectively (see Figure 20 ), or one reinforcing rib 2 is connected with two short frames 33 respectively, or one reinforcing rib 2 is connected with one long frame 32 and one short frame 33 respectively.

[0110] In an optional manner, referring to Figure 2 , one side of the fifth connecting plate 26 facing the mounting cavity is provided with a protrusion 21, and the protrusion 21 is matched with the groove on the outer side of the third base plate 102 described in the first aspect, so that the third base plate 102 can be in interference fit with the mounting cavity 20, so that the connecting device 1 and the reinforcing rib 2 have a certain pulling force after being connected.

[0111] The shape and structure of the fifth connecting plate can be set according to actual conditions, which is not limited here. For example, referring to Figure 17 , the fifth connecting plate 26 can be a connecting plate without a through hole or without a through groove; or referring to Figure 18 , a through groove is formed on the fifth connecting plate 26 in the height direction H3 of the reinforcing member, and the length direction of the through groove is consistent with the length direction of the reinforcing member.

[0112] As a possible implementation manner, referring to Figure 19 , the frame includes: a first side plate 34 and a second side plate 35 which are arranged at intervals in the width direction W2 of the frame. A support plate 36 and a bottom plate 37 which are arranged oppositely and at intervals in the height direction H2 of the frame. The support plate 36, the first side plate 34, the bottom plate 37 and the second side plate 35 form a cavity 30. The support plate 36 is used for bearing the laminated member, and the second side plate 35 is provided with a mounting hole 31; the first part 103 of the connecting device 1 penetrates through the mounting hole 31.

[0113] Further, referring to Figure 19 , one side of the first side plate 34 facing the second side plate 35 is provided with a limiting groove 38, and the opening of the limiting groove 38 faces the second side plate 35. In the embodiment of the utility model, the inner wall of the limiting groove 38 is matched with the outer wall of the connecting piece 11 in example one.

[0114] After the actual assembly, a part of the connecting device 1 abuts against the limiting groove 38, the upper and lower sidewalls of which are used to limit the movement of the end of the connecting device 1 along the height direction of the frame. When the reinforcing member is deformed under pressure, the limiting groove 38 limits the end of the connecting device 1 from moving upward along the height direction of the frame. Further, the movement of the connecting device 1 along the height direction of the frame is further limited under the cooperation of the first limiting member 12. Since the other part of the connecting device 1 is connected with the reinforcing member, by limiting the movement of the connecting device 1 along the height direction of the frame, the two ends of the reinforcing member used for connecting with the connecting device 1 are prevented from warping towards the laminated member in the photovoltaic module, thereby ensuring the safety of the laminated member and further ensuring the safety of the photovoltaic module, and avoiding the failure of the photovoltaic module.

[0115] The following describes the assembly process of the photovoltaic system in a possible case, and it should be noted that the following description is only for understanding and is not used for specific definition. Specifically, the connecting device described in the first case in Example 1 is assembled with the frame and the reinforcing member.

[0116] First, a part of the connecting device is inserted into the mounting cavity of the reinforcing member, so that the part of the connecting device is connected with the reinforcing member (for example, the reinforcing rib);

[0117] Next, adhesive (for example, silicone) is coated on the side of the reinforcing member facing the laminated member; the adhesive is used to bond the reinforcing member and the laminated member;

[0118] Next, the frame is installed around the laminated member by using a frame mounting machine;

[0119] Next, the other part of the connecting device is inserted through the mounting hole of the frame, so that the other part of the connecting device is connected with the frame. If the frame has a limiting groove, the outer wall of the connecting member abuts against the inner wall of the limiting groove at this time. During this process, the adhesive is located between the reinforcing member and the laminated member. When the adhesive solidifies, the reinforcing member and the laminated member are tightly connected, and the reinforcing member cannot move relative to the laminated member and the frame. Based on this, when the photovoltaic module is under pressure, the reinforcing member can increase the structural strength of the photovoltaic module and improve the bending resistance of the photovoltaic module, and the connecting device can provide the shear resistance, thereby avoiding that the deformation of the reinforcing member is too large to cause the load failure of the photovoltaic module, and thereby improving the load capacity of the photovoltaic module.

[0120] In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0121] The above merely describes a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A connection device, characterized in that The connecting device comprises: a substrate, at least two of the substrates are opposite and spaced apart; at least one connecting piece, the connecting piece has two opposite ends, and the two ends of the connecting piece are connected with the substrates, respectively; at least one first limiting piece is arranged on the substrate, the first limiting piece protrudes relative to the substrate, and the ratio between the distance between the first limiting piece and the end of the substrate and the length of the substrate is greater than or equal to 1 / 5 and less than or equal to 1 / 2 along the length direction of the substrate.

2. The connection device according to claim 1, characterized in that The connecting device comprises two opposite and spaced apart connecting pieces; the first ends of the two connecting pieces are connected with one end of the two substrates, respectively; and the second ends of the two connecting pieces are connected with the other end of the two substrates, respectively; along the length direction of the substrate, the substrate comprises a first substrate, a second substrate and a third substrate; the two ends of the second substrate are connected with the first substrate and the third substrate, respectively; the first limiting piece is arranged on the second substrate, and the first limiting piece protrudes relative to the first substrate and the third substrate along the thickness direction of the substrate.

3. The connection device according to claim 2, characterized in that The outer side surface of at least one of the first substrate and / or at least one of the third substrate is provided with a first clamping piece; alternatively, the outer side surface of at least one of the first substrate and / or at least one of the third substrate is a smooth transition surface.

4. The connection device according to claim 3, characterized in that The first clamping piece comprises a protruding piece or a groove; when the first clamping piece comprises a groove, the side wall of the groove is inclined towards the first limiting piece.

5. The connection device of claim 1, wherein The connecting device comprises one connecting piece; along the length direction of the substrate, the two ends of the connecting piece are connected with the ends of the two substrates, respectively; along the length direction of the substrate, the substrate comprises a first part and a second part; the first limiting piece is arranged on the first part, and the first limiting piece protrudes relative to the second part along the width direction of the substrate.

6. The connection device of claim 1, wherein The connecting device comprises one connecting piece; along the width direction of the substrate, the two ends of the connecting piece are connected with the side walls of the two substrates, respectively; along the length direction of the substrate, the substrate comprises a first part and a second part; the first limiting piece is arranged on the first part, and the first limiting piece protrudes relative to the second part along the width direction of the substrate.

7. The connection device according to claim 6, characterized in that The connecting device further comprises a second clamping piece; along the length direction of the substrate, the second clamping piece is arranged on the two ends of the substrate, respectively; along the direction close to the central area of the substrate, the vertical distance between the second clamping piece and the substrate along the thickness direction of the substrate gradually increases.

8. The connection device according to claim 7, characterized in that The second clamping piece and the substrate form an included angle, and the included angle is greater than or equal to 10° and less than or equal to 40°; and / or, the connecting device further comprises a second limiting piece, the second limiting piece is arranged on the side of the connecting piece away from the substrate; along the width direction of the substrate, the first limiting piece and the second limiting piece correspond to each other.

9. A photovoltaic system characterized by, The connecting device according to any one of claims 1 to 8; The photovoltaic module comprises a laminated piece and a frame mounted around the laminated piece; the reinforcing piece is opposite and spaced apart from the laminated piece; ​ The connecting device is used for pre-connecting two ends of the reinforcing member and the frame to assist the reinforcing member to be fastened to the laminated member.

10. The photovoltaic system of claim 9, wherein, The ratio of the position of the reinforcing member relative to the frame to the length of the frame is greater than or equal to 1 / 5 and less than or equal to 1 / 3.

11. The photovoltaic system of claim 9, wherein, The frame comprises: a first side plate and a second side plate which are arranged at intervals along the width direction of the frame; a support plate and a bottom plate which are arranged oppositely and at intervals along the height direction of the frame; the support plate, the first side plate, the bottom plate and the second side plate form a cavity; and the support plate is used for bearing the laminated member; an installation hole is formed in the second side plate; and a first part of the connecting device penetrates through the installation hole.

12. The photovoltaic system of claim 9, wherein, The reinforcing member comprises: a first connecting plate and a second connecting plate which are arranged at intervals along the width direction of the reinforcing member; a third connecting plate and a fourth connecting plate which are arranged oppositely and at intervals along the height direction of the reinforcing member; two fifth connecting plates which are arranged oppositely and at intervals along the height direction of the reinforcing member; the fifth connecting plates are connected to the first connecting plate and the second connecting plate respectively along the width direction of the reinforcing member; an installation cavity is formed between the first connecting plate, the second connecting plate and the two fifth connecting plates; the frame comprises two long frames which are arranged oppositely and two short frames which are arranged oppositely; a first part of the connecting device is connected to the long frame and / or the short frame; and a second part of the connecting device is located in the installation cavity.

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