CN218633770U - Roof photovoltaic power generation system - Google Patents

Abstract

The utility model discloses a roof photovoltaic power generation system, which comprises one or more photovoltaic component groups, wherein the one or more photovoltaic component groups are arranged along the longitudinal direction and comprise N photovoltaic components, N-1 main brackets and two auxiliary brackets which are arranged along the transverse direction in sequence; the main supports and the photovoltaic modules are arranged in a staggered mode, each main support is provided with a first connecting end portion and a second connecting end portion, and the photovoltaic modules are installed on the second connecting end portion of the previous main support and the first connecting end portion of the next main support or the first connecting end portion or the second connecting end portion of the auxiliary support and the main supports. The utility model discloses a change roof photovoltaic module's array structure, reduced whole roof photovoltaic power generation system's weight to reduced the load requirement on using the roof, improved roof photovoltaic power generation system's range of application, even the photovoltaic power generation system also can be installed on the lower roof of load.

Description

A rooftop photovoltaic power generation system

technical field

The utility model belongs to the technical field of photovoltaic power generation, in particular to a roof photovoltaic power generation system.

Background technique

Photovoltaic modules need to be installed on the support to form a photovoltaic array when they are in use. The support is generally made of steel or aluminum alloy. In the rooftop photovoltaic power generation system, the connection between the photovoltaic array and the roof is mainly through the connection between the base of the bracket and the counterweight cement pier on the roof. The cement pier is mainly used as the counterweight of the array to increase the wind load. There are two ways to connect the bottom support of the photovoltaic module to the cement pier. As shown in Figure 1 in the accompanying drawings, the photovoltaic module 2 is fixed on the support, and the base of the support is welded to the steel plate embedded in the surface of the cement pier 8 or using bolts. It is connected with the U-shaped embedded part 7 on the cement pier 8. However, due to the use of cement piers to fix the existing technology, it can only be used for buildings with high loads. Concrete roofs need to use counterweights, and counterweights generally weigh 80-100kg. This roof photovoltaic installation method is heavy on the roof The requirements are relatively high.

Concrete roofs can be divided into roofs with access and roofs with no access. According to the "Code for Loads of Building Structures" (GB50009-2012), the design standard value of the live load of the access roof is 2.0kN/m ² (200kg/m ² ) , the design standard value of the live load on the roof without people is 0.5kN/m ² (50kg/m ² ). After the photovoltaic power generation system is installed with a counterweight, the weight per square meter is between 60-75kg. Therefore, for the upper roof, the roof with a load of not less than 2.0kN/ ^m2 can be installed in the form of cement piers. However, if the load-bearing capacity of the roof is not enough, a special design scheme is required.

Utility model content

Aiming at the above technical problems, the utility model provides an improved roof photovoltaic power generation system, which has a lower weight, reduces the load requirements on the roof, and has a wider application range, and can install photovoltaic power generation systems even on roofs with lower loads. system.

In order to achieve the above object, the utility model adopts the following technical solutions:

A rooftop photovoltaic power generation system, including one or more photovoltaic module groups, one or more of the photovoltaic module groups are arranged vertically, the photovoltaic module group includes N photovoltaic modules arranged in sequence along the horizontal direction, N-1 main bracket and two auxiliary brackets;

The main brackets and the photovoltaic modules are arranged alternately, each of the main brackets has a first connection end and a second connection end, a photovoltaic module is installed on the first connection end, and the second connection end Another photovoltaic module is installed on it;

Each of the auxiliary brackets has a fixed end for connecting to the roof, one of the auxiliary brackets is also connected to the first photovoltaic module, and the other auxiliary bracket is also connected to the last photovoltaic module;

The photovoltaic module is installed on the second connection end of the previous main support and the first connection end of the next main support, or on the first connection end or the second connection end of the auxiliary support and the main support department.

Preferably, the roof photovoltaic power generation system further includes one or more longitudinal supports, the longitudinal supports extend longitudinally and are cross-connected with the main supports of the photovoltaic module group, and the longitudinal supports are used for and The two fixed ends of the roof connection.

Further, the number of the longitudinal supports is equal to the number of the main supports of one photovoltaic assembly group, and each of the main supports of the same photovoltaic assembly group is respectively cross-connected with one of the longitudinal supports.

Further, the longitudinal support is welded or bolted to the main support.

Further, the fixed end is fixedly connected to the lightning protection belt of the roof.

Further, the fixed end is connected to the lightning protection belt of the roof.

Preferably, the main bracket, the auxiliary bracket or the longitudinal bracket are formed of flat steel.

Preferably, a plurality of said photovoltaic module groups and a plurality of said longitudinal supports cross each other to form a photovoltaic module array.

Preferably, the height of the first connection end is lower than the height of the second connection end.

Preferably, the main bracket also has a bottom connected between the first connecting end and the second connecting end, the bottom is placed on the roof, and the first connecting end and the second connecting end The two connecting ends extend upwards from the roof.

The utility model adopts the above scheme, and has the following advantages compared with the prior art:

The utility model reduces the weight of the entire roof photovoltaic power generation system by changing the array structure of the roof photovoltaic components, thereby reducing the load requirements for the application of the roof and improving the application range of the roof photovoltaic power generation system. Photovoltaic power generation system can be installed.

Description of drawings

In order to illustrate the technical solution of the utility model more clearly, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the utility model. For Those of ordinary skill in the art can also obtain other drawings based on these drawings without making creative efforts.

Fig. 1 is the connection schematic diagram of photovoltaic module and roof in the prior art;

Fig. 2 is the arrangement structure diagram of the photovoltaic module group in the utility model embodiment;

Fig. 3 is a horizontal structural diagram of the photovoltaic module in the embodiment of the utility model;

Among them, 1. Photovoltaic module group; 2. Photovoltaic module; 3. Main support; 31. First connection end; 32. Second connection end; 33. Bottom; 4. Auxiliary support; 41. Fixed end; 5 . Vertical support; 51. Fixed end; 6. Photovoltaic module array; 7. U-shaped embedded parts; 8. Cement pier.

Detailed ways

The preferred embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the utility model can be more easily understood by those skilled in the art. It should be noted here that the descriptions of these implementations are used to help understand the utility model, but are not intended to limit the utility model. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute conflicts with each other.

As shown in Figure 2 and Figure 3, the rooftop photovoltaic power generation system in this embodiment includes one or more photovoltaic module groups 1, one or more photovoltaic module groups 1 are arranged in the longitudinal direction (east-west direction), and the photovoltaic module group 1 includes N A photovoltaic module 2, N-1 main supports 3 and two auxiliary supports 4 arranged in sequence along the horizontal direction (north-south direction); as shown in Figure 2, the roof photovoltaic power generation system also includes one or more longitudinal supports 5, the longitudinal supports 5 extends longitudinally and cross-connects with the main support 3 of the photovoltaic module group 1, and the vertical support 5 also has a fixed end 51 for connecting with the roof.

Specifically, as shown in FIG. 3 , the main supports 3 and the photovoltaic modules 2 are interlaced, and each main support 3 has a first connection end 31 and a second connection end 32 respectively, and a photovoltaic Assemblies, another photovoltaic module is installed on the second connection end 32; the height of the first connection end 31 is lower than the height of the second connection end 32, so that the photovoltaic module 2 is installed obliquely on the main support 3, which is beneficial to increase The power generation capacity of the roof photovoltaic power generation system; the main support 3 also has a bottom 33 connected between the first connection end 31 and the second connection end 32, the bottom 33 is placed on the roof, the first connection end 31 and the second connection end 32 The connection end 32 extends upward from the roof.

The auxiliary supports 4 respectively have fixed ends 41 connected to the roof, wherein one auxiliary support 4 is connected to the first photovoltaic assembly 2 , and the other auxiliary support 4 is connected to the last photovoltaic assembly 2 . The number of longitudinal supports 5 is equal to the number of main supports 3 of a photovoltaic module group 1, and each main support 3 of the same photovoltaic module group 1 is respectively cross-connected with a longitudinal support 5; the connection method of the longitudinal supports 5 and the main support 3 Can be welded or bolted. The main support 3, the auxiliary support 4 or the longitudinal support 5 are formed by flat steel.

The installation method of photovoltaic modules is as follows:

Any photovoltaic module 2 is installed on the second connection end 32 of the previous main support 3 and the first connection end 31 of the next main support 3 , or on the first connection end of the auxiliary support 4 and the main support 3 31 or the second connection end 32, the photovoltaic module 2 and the main support 3 or the auxiliary support 4 are connected by welding, and a plurality of photovoltaic module groups 1 and a plurality of longitudinal supports 5 cross each other to form a photovoltaic module array 6; the main support 3 , the styles of the auxiliary bracket 4 and the vertical bracket 5 can be adjusted according to the installation angle and installation distance of the photovoltaic module 2 . Generally, a group of brackets are installed under a photovoltaic module. In this embodiment, a bridge installation is adopted, that is, two adjacent photovoltaic modules 2 share a main bracket 3; the connection method between the photovoltaic module array 6 and the roof is: the auxiliary bracket 4 passes through The fixed end 41 is welded to the roof, the vertical support 5 is welded to the roof through the fixed end 51, the bottom 33 of the main support 3 is placed on the roof, and the bottom 33 is not fixedly connected to the roof. By changing the overall structure of the photovoltaic module array and the connection relationship between the bracket and the roof, the weight of the entire photovoltaic module array is effectively reduced, thereby reducing the load requirements on the application roof.

The fixed end 7 connected to the auxiliary support 4 and the roof, and the fixed end 9 connected to the vertical support 8 and the roof are all welded to the lightning protection belt of the roof, preferably in phase conduction, so as to fix, windproof and ground the entire photovoltaic module array The function improves the safety of the roof photovoltaic lighting system.

To sum up, the roof photovoltaic power generation system in this utility model reduces the weight of the entire photovoltaic array by changing the array structure of the roof photovoltaic modules, thereby reducing the load requirements for the application of the roof and improving the application of the roof photovoltaic power generation system. range, the photovoltaic power generation system can be installed even on the roof with a low load; and the roof photovoltaic power generation system does not damage the roof and affect the reliability of the building structure, effectively avoiding the damage of the waterproof layer and insulation layer of the roof due to the excessive pressure of the cement pier was destroyed, thus preserving the house building.

As shown in this specification and claims, the terms "comprising" and "comprising" only suggest the inclusion of explicitly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or device may also include other steps or elements. As used herein, the term "and/or" includes any combination of one or more of the associated listed items.

It should be noted that, unless otherwise specified, when a feature is called "fixed" or "connected" to another feature, it can be directly fixed and connected to another feature, or indirectly fixed and connected to another feature. on a feature. In addition, the descriptions such as up, down, left, and right used in the utility model are only relative to the mutual positional relationship of the various components of the utility model in the drawings.

The above-mentioned embodiment is only to illustrate the technical conception and characteristics of the present utility model. It is a preferred embodiment. Protection scope of utility model. All equivalent transformations or modifications made according to the principle of the utility model shall be covered within the protection scope of the utility model.

Claims (10)

1. A rooftop photovoltaic power generation system comprising one or more groups of photovoltaic modules, characterized by: one or more photovoltaic module groups are arranged along the longitudinal direction, and each photovoltaic module group comprises N photovoltaic modules, N-1 main supports and two auxiliary supports which are sequentially arranged along the transverse direction;

the main supports and the photovoltaic modules are arranged in a staggered mode, each main support is provided with a first connecting end and a second connecting end, one photovoltaic module is installed on the first connecting end, and the other photovoltaic module is installed on the second connecting end;

each auxiliary support is provided with a fixing end part for connecting with a roof, wherein one auxiliary support is also connected with a first photovoltaic module, and the other auxiliary support is also connected with a last photovoltaic module;

the photovoltaic module is arranged on the second connecting end part of the previous main bracket and the first connecting end part of the next main bracket, or arranged on the first connecting end part or the second connecting end part of the auxiliary bracket and the main brackets.

2. The rooftop photovoltaic power generation system of claim 1, further comprising one or more longitudinal supports extending in a longitudinal direction and crosswise coupled to the primary support of the group of photovoltaic modules, the longitudinal supports further having a securing end for coupling to a rooftop.

3. The rooftop photovoltaic power generation system of claim 2, wherein a number of said longitudinal supports is equal to a number of said primary supports of one said group of photovoltaic modules, each of said primary supports of a same said group of photovoltaic modules being cross-connected to a respective one of said longitudinal supports.

4. The rooftop photovoltaic power generation system of claim 2, wherein the longitudinal support and the main support are welded or bolted.

5. The rooftop photovoltaic power generation system of claim 2, wherein the securing end is fixedly attached to a lightning protection tape of a rooftop.

6. The rooftop photovoltaic power generation system of claim 2, wherein the fixed end is in communication with a lightning protection tape of the rooftop.

7. The rooftop photovoltaic power generation system of claim 2, wherein the primary, secondary, or longitudinal supports are formed from flat steel.

8. The rooftop photovoltaic power generation system of claim 2, wherein a plurality of the photovoltaic module groups and a plurality of the longitudinal supports intersect one another to form a photovoltaic module array.

9. The rooftop photovoltaic power generation system of claim 1, wherein a height of the first connection end is less than a height of the second connection end.

10. The rooftop photovoltaic power generation system of claim 1, wherein the main support further has a bottom connected between the first and second connection ends, the bottom being positioned on a rooftop, the first and second connection ends extending upwardly from the rooftop.

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