Photovoltaic system

Abstract

The utility model relates to the technical field of photovoltaic flexible supports, in particular to a photovoltaic system. The embodiment of the utility model provides a photovoltaic system, and the system comprises a plurality of photovoltaic string groups, and each photovoltaic string group comprises a group of cable strips and a plurality of photovoltaic modules located at the group of cable strips. And connecting rods, wherein the photovoltaic modules on the adjacent photovoltaic string groups are interconnected through the connecting rods. According to the embodiment of the invention, the photovoltaic string groups are interconnected through the connecting rods, and the problem that the vibration amplitude of the photovoltaic string groups is large due to the large vibration amplitude of the flexible bracket under the action of wind load, so that subfissure of the battery pieces is easily caused is solved.

Description

Technical Field

[0001] This application relates to the technical field of photovoltaic flexible supports, and particularly to a photovoltaic system. Background Art

[0002] During the installation of photovoltaic modules, due to the influence of terrain, the use of fixed supports is restricted. Based on this, flexible supports are often used for the installation of photovoltaic modules. Flexible supports generally use cable structures as load-bearing structures, and photovoltaic modules are installed on the cable structures.

[0003] However, under the action of wind load, the adjacent photovoltaic string groups are weakly connected by transverse cables, and the vibration amplitude of the photovoltaic string groups is large, which is likely to cause hidden cracks in the battery wafers.

[0004] It should be noted that the above content is not necessarily prior art and does not limit the patent protection scope of this application. Summary of the Utility Model

[0005] Embodiments of this application provide a photovoltaic system to solve or alleviate one or more of the above technical problems.

[0006] Embodiments of this application provide a photovoltaic system, including:

[0007] A plurality of photovoltaic string groups, each photovoltaic string group includes a set of cables and a plurality of photovoltaic modules located on the set of cables;

[0008] Link rods, and the photovoltaic modules on adjacent photovoltaic string groups are interconnected by the link rods.

[0009] In the embodiments of this application, adjacent photovoltaic string groups are connected by link rods to increase the connection between adjacent photovoltaic string groups. Under the action of wind load, the photovoltaic string groups are stressed synergistically as a whole. Compared with the individual photovoltaic string groups stressed separately, the overall synergistic stress is beneficial to reducing the vibration amplitude of the photovoltaic string groups, and thus reducing the situation of hidden cracks in the battery wafers.

[0010] According to the embodiments of this application, in this photovoltaic system, the positions of the photovoltaic modules on each photovoltaic string group are the same. Thus, a DC power generation unit, that is, a photovoltaic array, is formed.

[0011] According to the embodiments of this application, in this photovoltaic system, the set of cables includes at least two cables arranged in parallel. Thus, the installation and fixation of the photovoltaic modules on the flexible support are realized.

[0012] According to an embodiment of the present application, in the photovoltaic system, the direction where the cable is located is defined as the first direction, and the direction perpendicular to the direction where the cable is located is defined as the second direction; the connecting rod includes a second-direction steel tie rod; two corresponding photovoltaic modules on adjacent photovoltaic string groups are connected by using the second-direction steel tie rod. Thus, it has good ability to resist horizontal loads.

[0013] According to an embodiment of the present application, in the photovoltaic system, the connecting rod includes a first inclined steel tie rod and a second inclined steel tie rod. Neither the first inclined steel tie rod nor the second inclined steel tie rod is in the first direction or the second direction; two corresponding photovoltaic modules on adjacent photovoltaic string groups are connected by using the first inclined steel tie rod; two adjacent photovoltaic modules on the first side of adjacent photovoltaic string groups are connected by using the second inclined steel tie rod. Thus, it is connected as a whole both horizontally and vertically, further improving the integrity.

[0014] According to an embodiment of the present application, in the photovoltaic system, the first inclined steel tie rod and the second inclined steel tie rod are fixed at one place on the same photovoltaic module. Thus, the integrity is further improved.

[0015] According to an embodiment of the present application, in the photovoltaic system, the connecting rod includes a second-direction steel tie rod, a first inclined steel tie rod and a second inclined steel tie rod; two corresponding photovoltaic modules on adjacent photovoltaic string groups are simultaneously connected by using the second-direction steel tie rod and the first inclined steel tie rod; two adjacent photovoltaic modules on the first side of adjacent photovoltaic string groups are connected by using the second inclined steel tie rod. Thus, the safety redundancy is improved, and the horizontal truss structure also has better stiffness.

[0016] According to an embodiment of the present application, the photovoltaic system further includes: a pressing block, and the photovoltaic module is fixed on the cable through the pressing block. Thus, the fixation of the photovoltaic module on the cable is realized.

[0017] According to an embodiment of the present application, the photovoltaic system further includes: a frame, and the frame is arranged at the edge of the photovoltaic module to be interconnected; the connecting rod realizes the interconnection of the corresponding photovoltaic modules through the frame. Thus, the frame is introduced to realize the interconnection of the photovoltaic modules.

[0018] According to an embodiment of the present application, in the photovoltaic system, an interconnection strip is arranged on the frame, and the interconnection strip is used for connecting and fixing with the connecting rod.

[0019] According to an embodiment of the present application, in the photovoltaic system, the connection end of the connecting rod is designed to be hollow; when the connecting rod is connected with the interconnection strip, the interconnection strip is inserted into the hollow part, and the two are connected and fixed by using fasteners. Thus, it is convenient for disassembly and assembly. Description of the Drawings

[0020] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the several views denote the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0021] Figure 1 is a schematic structural diagram of a photovoltaic string group;

[0022] Figure 2 is a schematic structural diagram of the photovoltaic string group according to an embodiment of the present application;

[0023] Figure 3 is a schematic structural diagram of the photovoltaic string group according to another embodiment of the present application;

[0024] Figure 4 is a schematic structural diagram of the photovoltaic string group according to still another embodiment of the present application;

[0025] Figure 5 is a schematic structural diagram of the frame and the connecting rod according to an embodiment of the present application.

[0026] Description of reference numerals:

[0027] 1 - Photovoltaic module; 2 - Cable; 3 - Compression block; 4 - Connecting rod; 5 - Frame; 01 - Photovoltaic string group. Detailed implementation manners

[0028] In order to make the objectives, technical solutions and advantages of the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the drawings and embodiments.

[0029] It should be noted that the terms "first", "second", etc. in the specification, claims and the above-mentioned drawings of the present application are used to distinguish similar objects and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily need to be limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products or devices.

[0030] In this application, when it comes to numerical intervals (i.e., numerical ranges), unless otherwise specified, the distribution of the selectable numerical values within the numerical interval is considered continuous, and includes the two numerical endpoints of the numerical interval (i.e., the minimum value and the maximum value), as well as each numerical value between these two numerical endpoints. Unless otherwise specified, when the numerical interval only refers to the integers within the numerical interval, it includes the two endpoint integers of the numerical range, as well as each integer between the two endpoints, which is equivalent to directly listing each integer. When multiple numerical ranges are provided to describe features or characteristics, these numerical ranges can be combined. In other words, unless otherwise specified, the numerical ranges disclosed in this application should be understood to include any and all sub-ranges subsumed therein. The "numerical value" in the numerical interval can be any quantitative value, such as a number, a percentage, a ratio, etc. The "numerical interval" is allowed to broadly include quantitative intervals such as percentage intervals, ratio intervals, and ratio value intervals.

[0031] In the related art, flexible supports generally use cable structures as load-bearing structures, and photovoltaic modules are installed on the cable structures. Specifically, as Figure 1 shown, each group of cable strips 2 includes two parallel cable strips 2, and a plurality of photovoltaic modules 1 are arranged on each group of cable strips 2. A pressing block 3 is provided at the contact between the photovoltaic module 1 and the cable strip 2. Each group of cable strips 2 and the photovoltaic modules 1 and pressing blocks 3 located thereon form a photovoltaic string group 01. From Figure 1 it can be seen that the photovoltaic string groups 01 are flexibly connected by horizontal cable strips 2. Under the action of wind loads, the adjacent photovoltaic string groups 01 are weakly connected, and the vibration amplitude of the photovoltaic string groups 01 is large, which is likely to cause hidden cracks in the battery wafers.

[0032] The embodiment of the present application provides a photovoltaic system. Based on this, it is to solve the wind vibration problem of the flexible support and the photovoltaic module under the action of wind loads. See the following for details.

[0033] Next, the exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. It should be noted that these exemplary embodiments can be implemented in many different forms and should not be construed as being limited only to the embodiments described herein.

[0034] The embodiment of the present application provides a photovoltaic system. Refer to Figures 2 to 4 , this photovoltaic system may include:

[0035] A plurality of photovoltaic string groups 01, each photovoltaic string group 01 includes a plurality of parallel cable strips 2 and a plurality of photovoltaic modules 1 located on the plurality of cable strips 2;

[0036] Link rods 4, and the photovoltaic modules 1 on adjacent photovoltaic string groups 01 are interconnected by means of the link rods 4.

[0037] In an embodiment of the present application, the adjacent photovoltaic string groups 01 are connected by a connecting rod 4 to increase the rigid connection between the adjacent photovoltaic string groups 01. Under the action of wind load, the photovoltaic string groups 01 are stressed synergistically as a whole. Compared with the individual photovoltaic string groups 01 being stressed separately, the overall synergistic stress is beneficial to reducing the vibration amplitude of the photovoltaic string groups 01, and further reducing the occurrence of cell microcracks.

[0038] In a specific embodiment, in a photovoltaic system, refer to Figures 2 to 4 , the photovoltaic system includes 3 photovoltaic string groups 01. Each photovoltaic string group 01 includes a set of two parallel cable strips 2, and 3 photovoltaic modules 1 are provided on each set of cable strips 2. The present application does not limit the number of photovoltaic string groups 01, the number of cable strips 2 in the photovoltaic string group 01, and the number of photovoltaic modules 1. Those skilled in the art can set according to specific needs.

[0039] It should be noted that a set of cable strips 2 includes at least two cable strips 2. For example, a set of cable strips 2 includes two vertical cable strips 2, three vertical cable strips 2, four vertical cable strips 2, etc. to realize the installation and fixation of the photovoltaic module 1. In addition, in the photovoltaic system, adjacent photovoltaic modules 1 can also be weakly connected by a transverse cable strip.

[0040] In some embodiments, in the photovoltaic system, the positions of the photovoltaic modules 1 on each photovoltaic string group 01 are the same. Thus, in the direction perpendicular to the cable strip 2 and in the direction parallel to the cable strip 2, the photovoltaic modules 1 are arranged side by side in these two directions to form a DC power generation unit, that is, a photovoltaic array.

[0041] In some embodiments, refer to Figure 2 , in the photovoltaic system, taking the direction where the cable strip 2 is located as the first direction and the direction perpendicular to the direction where the cable strip 2 is located as the second direction. Further, the first direction can be the vertical direction, and the second direction can be the horizontal direction; the connecting rod 4 includes a second-direction steel tie rod; the two corresponding photovoltaic modules 1 on the adjacent photovoltaic string groups 01 are connected by using the second-direction steel tie rod. At this time, the direction where the connecting rod 4 is located is perpendicular to the direction where the cable strip 2 is located. Thus, a second-direction steel tie rod is arranged between the adjacent photovoltaic string groups 01, and the photovoltaic string groups 01 are connected into one body, so that the adjacent photovoltaic string groups 01 form a truss structure in the horizontal direction and have good ability to resist horizontal loads.

[0042] In some embodiments, refer to Figure 2 , the photovoltaic system further includes: a pressing block 3, and the photovoltaic module 1 is fixed on the cable strip 2 by the pressing block 3. Thus, the fixation of the photovoltaic module 1 on the cable strip 2 is realized. Specifically, pressing blocks 3 are provided at the contact positions of the four corners of the photovoltaic module 1 with the cable strip 2.

[0043] In some embodiments, refer to Figure 2, the photovoltaic system further includes: a frame 5, which is provided at the edge of the photovoltaic module 1 to be interconnected; the connecting rod 4 realizes the interconnection of the corresponding photovoltaic modules 1 through the frame 5. Thus, the interconnection of the photovoltaic modules 1 is realized. Specifically, see Figure 5 , an interconnection bar is provided on the frame 5, and the interconnection bar is used for connecting and fixing with the connecting rod 4. The connection end of the connecting rod 4 is designed to be hollow; when the connecting rod 4 is connected to the interconnection bar, the interconnection bar is inserted into the hollow part, and the two are connected and fixed by fasteners. Exemplarily, bolt holes are provided on the interconnection bar and the connecting rod 4, and the two are fastened by matching bolts and nuts. Thus, it is convenient for disassembly and assembly.

[0044] In some other embodiments, see Figure 3 , in the photovoltaic system, the connecting rod 4 includes a first inclined steel tie rod and a second inclined steel tie rod. Neither the first inclined steel tie rod nor the second inclined steel tie rod is in the first direction or the second direction, and the direction where the first inclined steel tie rod is located intersects with the direction where the second inclined steel tie rod is located; two corresponding photovoltaic modules 1 on adjacent photovoltaic string groups 01 are connected by the first inclined steel tie rod; the photovoltaic modules 1 adjacent to each other on the first side of adjacent photovoltaic string groups 01 are connected by the second inclined steel tie rod. Thus, the first inclined steel tie rod and the second inclined steel tie rod are used to connect adjacent components into a whole in the horizontal direction, and at the same time, the vertical components of adjacent string groups are connected into a whole, further improving the integrity.

[0045] Further, the first inclined steel tie rod and the second inclined steel tie rod can be fixed at one place on the same photovoltaic module 1. Thus, the integrity is further improved.

[0046] In still some other embodiments, see Figure 4 , in the photovoltaic system, the connecting rod 4 includes a second-direction steel tie rod, a first inclined steel tie rod and a second inclined steel tie rod; two corresponding photovoltaic modules 1 on adjacent photovoltaic string groups 01 are connected by the second-direction steel tie rod and the first inclined steel tie rod; the photovoltaic modules 1 adjacent to each other on the first side of adjacent photovoltaic string groups 01 are connected by the second inclined steel tie rod. Thus, the horizontal tie rod and the inclined tie rod are used simultaneously, improving the safety redundancy and making the horizontal truss structure have better stiffness.

[0047] Further, the first inclined steel tie rod and the second inclined steel tie rod are fixed at one place on the same photovoltaic module 1. Thus, the integrity is further improved.

[0048] In some embodiments, in the photovoltaic system, the schematic structural diagram of the frame and the connecting rod is as shown in Figure 5As shown, the frame 5 is provided at the edge of the photovoltaic module 1 to be interconnected; the connecting rod 4 realizes the interconnection of the corresponding photovoltaic modules 1 through the frame 5. Thus, the interconnection of the photovoltaic modules 1 is achieved. It can be understood that one frame 5 can be provided on each photovoltaic module 1, or multiple frames 5 can be provided, depending on the use environment. Further, an interconnecting strip is provided on the frame 5, and the interconnecting strip is used to connect and fix to the connecting rod 4. The connecting end of the connecting rod 4 is designed to be hollow; when the connecting rod 4 is connected to the interconnecting strip, the interconnecting strip is inserted into the hollow part, and the two are connected and fixed by fasteners. Thus, the connecting rod 4 is independently connected to the frame 5. When the connecting rod 4 or the frame 5 is damaged, it can be replaced separately without affecting other connecting rods 4 and frames 5.

[0049] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0050] For the sake of convenience of description, the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present application; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "on top of other devices or structures" will be positioned "below other devices or structures" or "beneath other devices or structures" afterwards. Thus, the exemplary term "above..." can include both "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations for the relative spatial descriptions used herein are made.

[0051] Unless otherwise expressly stipulated or limited, terms such as "install", "connect", "link", "fix", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0052] Unless otherwise specifically stated, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0053] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and values set forth in these embodiments do not limit the scope of this application. At the same time, it should be understood that, for the convenience of description, the sizes of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0054] It should also be noted that the "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in connection with that embodiment being included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in connection with any one embodiment, it is intended that the implementation of such feature, structure or characteristic in combination with other embodiments also falls within the scope of this application.

[0055] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0056] It should also be noted that the above are only the preferred embodiments of the present application, and do not limit the patent protection scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall similarly be included in the patent protection scope of the present application.

Claims

1. A photovoltaic system, characterized in that: include: A plurality of photovoltaic string groups (01), each photovoltaic string group (01) comprising a group of cables (2) and a plurality of photovoltaic components (1) located on the group of cables (2); A connecting rod (4), the photovoltaic components (1) on adjacent photovoltaic string groups (01) are interconnected by means of the connecting rod (4).

2. The photovoltaic system according to claim 1, characterized in that: Meet at least one of the following characteristics: The positions of the photovoltaic components (1) on each photovoltaic string group (01) are the same; The group of cables (2) comprises at least two cables (2) arranged in parallel.

3. The photovoltaic system according to claim 2, characterized in that: The direction in which the cable strip (2) is located is taken as the first direction, and the direction perpendicular to the direction in which the cable strip (2) is located is taken as the second direction; The connecting rod (4) comprises a second direction steel pull rod; The two corresponding photovoltaic modules (1) on adjacent photovoltaic string groups (01) are connected by using the second-direction steel tie rods.

4. The photovoltaic system according to claim 2, characterized in that: The connecting rod (4) comprises a first oblique steel tie rod and a second oblique steel tie rod, wherein the first oblique steel tie rod and the second oblique steel tie rod are both not in the first direction and are not in the second direction; Two corresponding photovoltaic modules (1) on adjacent photovoltaic string groups (01) are connected using the first inclined steel tie rod; The adjacent photovoltaic components (1) on the first aspect of the adjacent photovoltaic string groups (01) are connected by using the second inclined steel tie rod.

5. The photovoltaic system according to claim 4, characterized in that: The first inclined steel tie rod and the second inclined steel tie rod are fixed at one location on the same photovoltaic module (1).

6. The photovoltaic system according to claim 2, characterized in that: The connecting rod (4) comprises a second directional steel pull rod, a first inclined steel pull rod and a second inclined steel pull rod; Two corresponding photovoltaic modules (1) on adjacent photovoltaic string groups (01) are connected by using the second directional steel tie rod and the first inclined steel tie rod at the same time; The adjacent photovoltaic components (1) on the first aspect of the adjacent photovoltaic string groups (01) are connected by using the second inclined steel tie rod.

7. The photovoltaic system according to any one of claims 1 to 6, characterized in that: Also includes: A pressing block (3), wherein the photovoltaic assembly (1) is fixed on the cable strip (2) via the pressing block (3).

8. The photovoltaic system according to any one of claims 1 to 6, characterized in that: Also includes: A frame (5), the frame (5) being arranged at the edge of the photovoltaic assembly (1) to be interconnected; The connecting rod (4) realizes the interconnection of corresponding photovoltaic components (1) through the frame (5).

9. The photovoltaic system according to claim 8, characterized in that: The frame (5) is provided with an interconnecting strip, and the interconnecting strip is used to be connected and fixed to the connecting rod (4).

10. The photovoltaic system according to claim 9, characterized in that: The connecting end of the connecting rod (4) is hollow in design; When the connecting rod (4) is connected to the interconnecting strip, the interconnecting strip is inserted into the hollow portion, and the two are connected and fixed by fasteners.

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