Design method of building integrated photovoltaics

Abstract

The invention provides a design method of building integrated photovoltaics. The building integrated photovoltaic design method comprises the steps that the arrangement positions and the number of purlines are determined; the positions and the number of the metal plate supports arranged on the purlines are determined; the distance between the connecting structures on the to-be-installed photovoltaic module is determined according to the distance between the two adjacent metal plate supports, the distance between the two adjacent metal plate supports is equal to the distance between the two adjacent connecting structures on the to-be-installed photovoltaic module, and therefore the problem that in the prior art, the cost of a photovoltaic building is high is solved.

Description

Technical Field

[0001] The present invention relates to the field of new energy technology, and in particular to a design method for photovoltaic building integration. Background Art

[0002] The rapid development of the photovoltaic industry has brought green energy to people. At present, photovoltaic modules are mostly installed on the top of buildings. The construction of buildings and photovoltaic modules is mostly done by different construction units. In order to facilitate the bearing of photovoltaic modules, it is necessary to set guide rails between the color steel tiles on the top of the building and the photovoltaic modules during construction. By laying multiple guide rails on the color steel tiles to bear the load from the photovoltaic modules, or developing color steel tiles with slots, the photovoltaic modules are connected to the color steel tiles through the slots or bonded to the metal roof tiles through structural adhesive. However, whether it is setting guide rails or developing color steel tiles with slots, the structure of the photovoltaic building is complex during design, the steps during installation are cumbersome, and the R&D cost and the cost of the guide rails are high.

[0003] As can be seen from the above, the existing technology has the problem of high cost of photovoltaic buildings. Summary of the invention

[0004] The main purpose of the present invention is to provide a design method for photovoltaic building integration to solve the problem of high cost of photovoltaic buildings in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a design method for photovoltaic building integration, including: determining the setting position and number of purlins; determining the position and number of metal plate brackets set on the purlins; determining the spacing of the connecting structure on the photovoltaic assembly to be installed according to the spacing between two adjacent metal plate brackets, wherein the spacing between two adjacent metal plate brackets is equal to the spacing between two adjacent connecting structures on the photovoltaic assembly to be installed.

[0006] Furthermore, the design method for photovoltaic building integration also includes a preliminary analysis step before determining the setting position and number of purlins, and the preliminary analysis step includes: collecting the light-receiving area of ​​the area to be laid; dividing the light-receiving area into one or more areas to be installed, with or without an installation gap between two adjacent areas to be installed.

[0007] Furthermore, determining the location and number of purlins includes: setting two purlins in each area to be installed; setting the spacing L1 between the two purlins to be smaller than the length L of the photovoltaic component to be installed in the corresponding area to be installed, and satisfying the relationship: L=L1+2L2; wherein L2 is the spacing between the purlin and the edge of the photovoltaic component to be installed.

[0008] Furthermore, determining the location and quantity of the purlins also includes: setting L2 to be non-zero.

[0009] Further, determining the position and number of the metal plate brackets to be arranged on the purlin includes: setting a distance W1 between two adjacent metal plate brackets on the same purlin to be greater than a width W of a single photovoltaic module to be installed.

[0010] Further, determining the position and number of metal plate brackets set on the purlin includes: setting the distance W1 and the width W to satisfy the relationship: W1=W+ΔW; wherein ΔW is the distance between two adjacent photovoltaic components to be installed in the same area to be installed along the extension direction of the purlin.

[0011] Furthermore, the pre-analysis step also includes: setting the multiple areas to be installed into areas with the same size; arranging the multiple areas to be installed along an extension direction perpendicular to the purlin.

[0012] Furthermore, determining the location and number of purlins also includes: setting the extension direction of the purlins to the arrangement direction of multiple photovoltaic modules to be installed in the same installation area; and setting the vertical direction of the extension direction of the purlins to the length direction of a single photovoltaic module to be installed.

[0013] Furthermore, the design method for photovoltaic building integration also includes: determining the distance W2 between two connecting wave peaks on the metal roof panel for connecting the photovoltaic components to be installed according to the distance W1 between two adjacent metal plate brackets on the same purlin, wherein W1=W2.

[0014] Furthermore, the design method of photovoltaic building integration also includes:

[0015] At least one auxiliary crest which is not used for connecting the photovoltaic components to be installed is also arranged between the two connecting crests for connecting the photovoltaic components to be installed.

[0016] By applying the technical solution of the present invention, the design method for photovoltaic building integration includes: determining the setting position and number of purlins; determining the position and number of metal plate brackets set on the purlins; determining the spacing of the connecting structure on the photovoltaic assembly to be installed according to the spacing between two adjacent metal plate brackets, wherein the spacing between two adjacent metal plate brackets is equal to the spacing between two adjacent connecting structures on the photovoltaic assembly to be installed, and by designing the metal plate brackets on the purlins and the connecting structures on the photovoltaic assembly in a one-to-one correspondence, and designing the position of the connecting structure on the photovoltaic assembly with reference to the spacing of the metal plate brackets, the photovoltaic assembly can be set corresponding to the purlins during subsequent installation, avoiding the photovoltaic assembly not being installed at the corresponding position of the purlin where the metal plate bracket is set during installation. At the same time, the corresponding setting method of the photovoltaic assembly and the purlin can also cancel the guide rail set in the existing technical solution, thereby reducing the cost of photovoltaic buildings and solving the problem of high cost of photovoltaic buildings in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A flow chart showing a design method for photovoltaic building integration in a specific embodiment of the present invention; and

[0019] Figure 2 A schematic structural diagram of a photovoltaic building designed by a photovoltaic building integration design method in a specific embodiment of the present invention is shown;

[0020] Figure 3 Show Figure 1 A local enlarged view of point A in FIG.

[0021] Figure 4 A schematic structural diagram of a photovoltaic building designed by a photovoltaic building integration design method according to another specific embodiment of the present invention is shown;

[0022] Figure 5 A schematic structural diagram of a photovoltaic building designed by a photovoltaic building integration design method in another specific embodiment of the present invention is shown.

[0023] The above drawings include the following reference numerals:

[0024] 10. Purlin; 20. Connection structure; 30. Photovoltaic modules to be installed; 40. Metal roof panels; 41. Connection crests; 42. Auxiliary crests; 50. Press blocks. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0027] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0028] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0029] In order to solve the problem of high cost of photovoltaic buildings in the prior art, the present invention provides a design method for photovoltaic building integration.

[0030] like Figures 1 to 5 As shown, the design method for photovoltaic building integration includes: determining the setting position and number of purlins 10; determining the position and number of metal plate brackets set on the purlins 10; determining the spacing of the connecting structure 20 on the photovoltaic assembly 30 to be installed according to the spacing between two adjacent metal plate brackets, wherein the spacing between two adjacent metal plate brackets is equal to the spacing between two adjacent connecting structures 20 on the photovoltaic assembly 30 to be installed.

[0031] By designing the metal plate bracket on the purlin 10 and the connecting structure 20 on the photovoltaic component 30 to be installed in a one-to-one correspondence, and designing the position of the connecting structure 20 on the photovoltaic component 30 to be installed with reference to the spacing of the metal plate bracket, the photovoltaic component 30 to be installed can be set corresponding to the purlin 10 during subsequent installation, thereby avoiding the photovoltaic component 30 to be installed not being installed at the corresponding position of the purlin 10 where the metal plate bracket is provided. At the same time, the corresponding arrangement of the photovoltaic component 30 to be installed and the purlin 10 can also eliminate the guide rail provided in the prior art solution, thereby reducing the cost of the photovoltaic building.

[0032] In this embodiment, the design method for photovoltaic building integration also includes a pre-analysis step before determining the setting position and number of the purlins 10, and the pre-analysis step includes: collecting the light receiving area of ​​the area to be laid. Dividing the light receiving area into one or more areas to be installed, with an installation gap or no installation gap between two adjacent areas to be installed.

[0033] Specifically, according to the light receiving area information to be set on the metal roof panel 40, the number of the areas to be installed is selected. The light receiving area is smaller than the area of ​​the building top surface. If the light receiving area is much smaller than the area of ​​the building top surface, the area of ​​the area to be installed can be designed to be four, as shown in the attached figure. Figure 2 As shown, the installation gap between each two adjacent areas to be installed can form a channel on the top surface of the building, so that the photovoltaic components 30 to be installed can be easily repaired after installation; if the light receiving area is slightly smaller than the area of ​​the top surface of the building, the area to be installed is set to two or one. When it is set to two, an installation gap is formed between the two areas to be installed for easy maintenance, as shown in the attached figure. Figure 4 Or attach Figure 5 shown.

[0034] In this embodiment, determining the location and number of the purlins 10 includes: setting two purlins 10 in each area to be installed; setting the spacing L1 between the two purlins 10 to be less than the length L of the photovoltaic assembly 30 to be installed in the corresponding area to be installed, and satisfying the relationship: L=L1+2L2. Wherein, L2 is the spacing between the purlin 10 and the edge of the photovoltaic assembly 30 to be installed.

[0035] Specifically, the area to be installed is provided with at least one photovoltaic assembly 30 to be installed, as shown in the attached Figure 5 As shown, when there is one area to be installed, multiple photovoltaic components 30 to be installed can be arranged in the area to be installed and form multiple rows. The multiple rows of photovoltaic components 30 to be installed are arranged along the length direction of the vertical purlin 10, and the narrow sides of two adjacent rows of photovoltaic components 30 to be installed are abutted, that is, a photovoltaic array is arranged in the area to be installed, and the photovoltaic array is 3 rows of photovoltaic components 30 to be installed or more rows of photovoltaic components 30 to be installed. Each row of photovoltaic components 30 to be installed is correspondingly provided with two purlins 10, and the distance between the two purlins 10 is L1. The spacing between the metal plate bracket on the purlin 10 and the connecting structure 20 on the photovoltaic component 30 to be installed is L2, so that after the multiple photovoltaic components 30 to be installed are installed, the multiple connecting structures 20 of the multiple photovoltaic components 30 to be installed are correspondingly arranged with the multiple metal plate brackets, so that the load on each photovoltaic component 30 to be installed can be transferred to the purlin 10 through the connecting structure 20 and the metal plate bracket;

[0036] As attached Figure 4 As shown, when there are two areas to be installed, two rows of photovoltaic components 30 to be installed can be arranged in each area to be installed, and the two rows of photovoltaic components 30 to be installed are abutted, that is, a photovoltaic array is arranged in each area to be installed, and the photovoltaic array is 2 rows of photovoltaic components to be installed, and the multiple photovoltaic components 30 to be installed in each row of photovoltaic components 30 to be installed are arranged along a straight line, and two purlins 10 are correspondingly arranged, the interval between the two areas to be installed is ΔL, and the distance between the two purlins 10 of two adjacent areas is ΔL+2L2.

[0037] As attached Figure 2 As shown, when there are more than two areas to be installed, multiple photovoltaic components 30 to be installed in each area to be installed are arranged in a row, that is, a photovoltaic array is set in each area to be installed, and the photovoltaic array is a row of photovoltaic components to be installed. A plurality of metal plate brackets are also correspondingly arranged on the purlin 10. At this time, the edge positions of the purlin 10 and the photovoltaic components 30 to be installed are set at an interval of L2. At this time, the connection structures on the multiple photovoltaic components 30 to be installed are all arranged corresponding to the multiple metal plate brackets on the purlin 10.

[0038] In this embodiment, determining the location and quantity of the purlins 10 further includes: setting L2 to be non-zero.

[0039] Specifically, when L2 is zero, the purlin 10 is arranged at the edge of the area to be installed. At this time, the arrangement of the two purlins 10 is different from the load that can be borne when L2 is not zero, and L2 can play a better supporting role when it is not zero.

[0040] In this embodiment, determining the position and number of metal plate brackets on the purlin 10 includes setting a distance W1 between two adjacent metal plate brackets on the same purlin 10 to be greater than a width W of a single photovoltaic assembly 30 to be installed.

[0041] Specifically, the distance between two adjacent metal plate brackets is not consistent with the width W of the photovoltaic assembly 30 to be installed, and the corresponding connection structure 20 is arranged on the side of the photovoltaic assembly 30 to be installed. When the two adjacent photovoltaic assemblies 30 to be installed are installed, a pressing block 50 can also be arranged on the top surface of the photovoltaic assembly 30 to be installed, and the two adjacent photovoltaic assemblies 30 to be installed are pressed against the connection structure 20 by the pressing block 50, so as to finally realize the coordinated force of multiple photovoltaic assemblies 30 to be installed. Optionally, in this embodiment, the connection structure 20 is a connector, and the connector is connected to two adjacent photovoltaic assemblies 30 to be installed at the same time.

[0042] In this embodiment, determining the position and number of metal plate brackets to be set on the purlin 10 includes: setting the distance W1 and the width W to satisfy the relationship: W1=W+ΔW. ΔW is the distance between two adjacent photovoltaic modules 30 to be installed in the same installation area along the extension direction of the purlin 10.

[0043] Specifically, by limiting the distance between two metal plate brackets, the spacing between two photovoltaic components 30 to be installed can be designed according to the width W of each photovoltaic component 30 to be installed. When the width W of the photovoltaic component 30 to be installed is fixed, the spacing between two adjacent photovoltaic components 30 to be installed can be adjusted by adjusting the metal plate bracket.

[0044] In this embodiment, the pre-analysis step further includes: arranging the plurality of areas to be installed into areas of uniform size and arranging the plurality of areas to be installed along a direction perpendicular to the extension direction of the purlin 10 .

[0045] Specifically, the area of ​​each area to be installed is consistent, and the same size of photovoltaic components to be installed can be used in subsequent purchases. In the present embodiment, when there are multiple areas to be installed, the edges of the multiple areas to be installed are arranged on the same straight line, that is, the projections of the multiple areas to be installed in the width direction are the same. Optionally, the multiple areas to be installed are staggered, and the corresponding multiple metal plate brackets on the multiple purlins 10 are also staggered.

[0046] In this embodiment, determining the location and number of the purlins 10 further includes: setting the extension direction of the purlins 10 to the arrangement direction of multiple photovoltaic modules 30 to be installed in the same installation area, and setting the vertical direction of the extension direction of the purlins 10 to the length direction of a single photovoltaic module 30 to be installed.

[0047] Specifically, no matter there are one, two or more installation areas, at least one row of photovoltaic components 30 to be installed is arranged in each installation area, the length direction of a row of photovoltaic components 30 to be installed is consistent with the length direction of the purlin 10, and the extension direction of the purlin 10 is parallel to the width direction of a single photovoltaic component 30 to be installed, and at the same time, one purlin 10 supports multiple photovoltaic components 30 to be installed. In this case, compared with the extension direction of the purlin 10 being parallel to the length direction of a single photovoltaic component 30 to be installed, the number of purlins 10 can be reduced, thereby reducing the overall cost.

[0048] like Figures 2 to 5 As shown, the design method for photovoltaic building integration also includes: determining the distance W2 between two connecting crests 41 on the metal roof panel 40 for connecting the photovoltaic components 30 to be installed according to the distance W1 between two adjacent metal plate brackets on the same purlin 10, wherein W1=W2.

[0049] Specifically, the metal roof panel 40 is a color steel plate or an aluminum plate, and two metal plate brackets are correspondingly provided with two connecting crests 41, and the metal plate bracket is located between the purlin 10 and the crest of the color steel plate, that is, the metal plate bracket extends toward the connecting crest 41, so that the connecting structure 20 can be directly connected to the crest and then connected to the metal plate bracket. At the same time, this method makes it unnecessary to make the thickness of the connecting crest 41 too thick, and the metal plate bracket is used to support the connecting structure 20.

[0050] like Figures 2 to 5 As shown, the design method for photovoltaic building integration also includes: at least one auxiliary wave crest 42 not used for connecting the photovoltaic components 30 to be installed is arranged between the two connecting wave crests 41 for connecting the photovoltaic components 30 to be installed.

[0051] Specifically, a plurality of auxiliary wave peaks 42 are arranged between two connecting wave peaks 41. By designing a plurality of auxiliary wave peaks 42, the structural strength of the entire metal roof panel 40 can be increased, so that the metal roof panel 40 can withstand more loads. Compared with increasing the thickness of the metal roof panel 40, the cost of setting the auxiliary wave peaks 42 is relatively low.

[0052] From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: the design method for photovoltaic building integration includes: determining the setting position and number of purlins 10, determining the position and number of metal plate brackets set on the purlins 10, and determining the spacing of the connecting structure 20 on the photovoltaic assembly 30 to be installed according to the spacing between two adjacent metal plate brackets, wherein the spacing between two adjacent metal plate brackets is equal to the spacing between two adjacent connecting structures 20 on the photovoltaic assembly 30 to be installed, by designing the metal plate brackets on the purlins 10 and the connecting structures 20 on the photovoltaic assembly 30 to be installed in a one-to-one correspondence, and designing the position of the connecting structure 20 on the photovoltaic assembly 30 to be installed with reference to the spacing of the metal plate brackets, the photovoltaic assembly 30 to be installed can be set corresponding to the purlin 10 during subsequent installation, avoiding the photovoltaic assembly 30 to be installed not being installed at the corresponding position of the purlin 10 where the metal plate bracket is set, and at the same time, the corresponding setting method of the photovoltaic assembly 30 to be installed and the purlin 10 can also cancel the guide rail set in the prior art solution, thereby reducing the cost of the photovoltaic building.

[0053] 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 form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0054] It should be noted that the terms "upper", "lower", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A design method for photovoltaic building integration, characterized in that: include: Determine the location and quantity of the purlins (10); Determining the position and quantity of metal plate brackets arranged on the purlin (10); The spacing of the connection structure (20) on the photovoltaic assembly (30) to be installed is determined according to the spacing between two adjacent metal plate brackets, wherein the spacing between two adjacent metal plate brackets is equal to the spacing between two adjacent connection structures (20) on the photovoltaic assembly (30) to be installed.

2. The design method for photovoltaic building integration according to claim 1, characterized in that: The photovoltaic building integrated design method further comprises a pre-analysis step before determining the setting position and quantity of the purlins (10), the pre-analysis step comprising: Collect the light receiving area of ​​the area to be laid; The light receiving area is divided into one or more areas to be installed, and there is an installation gap or no installation gap between two adjacent areas to be installed.

3. The design method for photovoltaic building integration according to claim 2, characterized in that: Determining the location and quantity of the purlins (10) comprises: Two purlins (10) are arranged in each of the areas to be installed; The distance L1 between the two purlins (10) is set to be smaller than the length L of the photovoltaic assembly (30) to be installed at the corresponding installation area, and the relationship is satisfied: L = L1 + 2L2; Wherein, L2 is the distance between the purlin (10) and the edge of the photovoltaic assembly (30) to be installed.

4. The design method for photovoltaic building integration according to claim 3 is characterized in that: The step of determining the location and quantity of the purlins (10) further comprises: Set L2 to non-zero.

5. The design method for photovoltaic building integration according to claim 3, characterized in that: The step of determining the position and quantity of the metal plate brackets arranged on the purlin (10) comprises: The distance W1 between two adjacent metal plate brackets on the same purlin (10) is set to be greater than the width W of a single photovoltaic assembly (30) to be installed.

6. The design method for photovoltaic building integration according to claim 5, characterized in that: The step of determining the position and quantity of the metal plate brackets arranged on the purlin (10) comprises: The distance W1 and the width W are set to satisfy the relationship: W1=W+ΔW; Wherein, the ΔW is the distance between two adjacent photovoltaic components (30) to be installed in the same area to be installed along the extension direction of the purlin (10).

7. The design method for photovoltaic building integration according to claim 2, characterized in that: The pre-analysis step also includes: Arrange the plurality of areas to be installed into areas with the same size; The multiple areas to be installed are arranged along a direction perpendicular to the extension direction of the purlin (10).

8. The design method for photovoltaic building integration according to claim 3, characterized in that: The step of determining the location and quantity of the purlins (10) further comprises: The extension direction of the purlin (10) is set to be the arrangement direction of the plurality of photovoltaic assemblies (30) to be installed in the same area to be installed; The vertical direction of the extension direction of the purlin (10) is set as the length direction of a single photovoltaic assembly (30) to be installed.

9. The design method for photovoltaic building integration according to any one of claims 1 to 8, characterized in that: The photovoltaic building integrated design method also includes: The distance W2 between two connecting wave crests (41) on the metal roof panel (40) for connecting the photovoltaic assembly (30) to be installed is determined according to the distance W1 between two adjacent metal plate brackets on the same purlin (10), wherein W1=W2.

10. The design method for photovoltaic building integration according to claim 9, characterized in that: The photovoltaic building integrated design method also includes: At least one auxiliary wave crest (42) not used for connecting the photovoltaic assembly (30) to be installed is also arranged between the two connecting wave crests (41) used for connecting the photovoltaic assembly (30) to be installed.

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