Photovoltaic system and installation method thereof

Abstract

The invention provides a photovoltaic system, the photovoltaic system comprises a photovoltaic module and a photovoltaic support, the photovoltaic module comprises a frame, the frame comprises a mounting groove and a bending structure, the mounting groove is used for accommodating a photovoltaic panel, the bending structure is formed below the mounting groove, and the bending structure is used for bending the photovoltaic panel. The bending structure comprises a first inclined part and a hook-shaped part, the first inclined part is formed by extending downwards and outwards, and the hook-shaped part is formed by bending inwards from the first inclined part and defines a groove with an upward opening; the photovoltaic support is provided with a purline, the purline comprises a side part and a second inclined part, and the second inclined part is formed by extending downwards and outwards from the side part; wherein the tail end of the second inclined part is matched with the hook-shaped part, so that the frame is fixedly connected with the purline. According to the photovoltaic system, the installation cost is reduced, and the installation efficiency is improved. The invention further provides an installation method of the photovoltaic system.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic components, and in particular to a photovoltaic system and an installation method thereof. Background Art

[0002] The rapid installation of photovoltaic modules has become an important part of the power station construction process. How to quickly complete the installation of photovoltaic modules is the key to improving installation efficiency. At present, the frames of photovoltaic modules are mostly made of lightweight aluminum alloy. Aluminum alloys are prone to chemical corrosion with steel purlins, and the market price of aluminum is relatively high. In addition, at present, the installation method of photovoltaic modules usually uses a pressure block with bolts or a bolt and nut with a gasket to complete the installation at the frame hole of the module. This type of installation method usually requires at least two workers to participate in the installation. The installation process is cumbersome and labor-intensive. At the same time, the components and bolts are easy to slip during the installation process;

[0003] Therefore, it is necessary to provide an improved photovoltaic system and an installation method thereof to overcome or reduce at least a portion of the disadvantages existing in the above-mentioned prior art. Summary of the invention

[0004] In a first aspect of the present invention, a photovoltaic system is provided, the photovoltaic system comprising a photovoltaic assembly and a photovoltaic support, wherein:

[0005] The photovoltaic module includes a frame, which includes: a mounting groove and a bending structure, the mounting groove is used to accommodate the photovoltaic panel, the bending structure is formed below the mounting groove, the bending structure includes a first inclined portion and a hook-shaped portion, wherein the first inclined portion is formed to extend downward and outward, and the hook-shaped portion is formed by bending inward from the first inclined portion and defines a groove opening upward;

[0006] The photovoltaic support is provided with a purlin, and the purlin includes: a side portion and a second inclined portion, wherein the second inclined portion extends downward and outward from the side portion;

[0007] The end of the second inclined portion and the hook-shaped portion cooperate with each other to fix the frame and the purlin.

[0008] The photovoltaic system of the present invention arranges the frame of the photovoltaic component to include a mounting groove and a bending structure having a first inclined portion and a hook-shaped portion, and arranges the purlin of the photovoltaic bracket to include a side portion and a second inclined portion. The end of the second inclined portion and the hook-shaped portion cooperate with each other to achieve a fixed connection between the frame and the purlin. When used, no additional connecting parts such as bolts are required between the frame and the purlin, the installation process is simple, and the installation efficiency is greatly improved. By providing the first inclined portion and the second inclined portion, the inclined portion can provide guidance for the coordinated installation of the frame and the purlin, further improving the installation efficiency, and the inclined surface of the inclined portion improves the installation tolerance space, increases the contact area between the frame and the purlin, and reduces the risk of detachment between the end of the second inclined portion and the hook-shaped portion.

[0009] Optionally, the end of the second inclined portion is engaged with the groove, so that the frame is fixedly connected to the purlin. By engaging the end of the second inclined portion with the groove, the frame and the purlin can be firmly fixed.

[0010] Optionally, the second inclined portion and the hook portion are configured as follows:

[0011] The projection of the inner side of the end of the second inclined portion on the horizontal plane is located within the projection of the hook-shaped portion on the horizontal plane, and

[0012] The projected length of the end of the second inclined portion on the horizontal plane is less than or equal to 2 / 3 of the projected length of the hook-shaped portion on the horizontal plane.

[0013] By limiting the projection position and length of the second inclined portion and the hook-shaped portion, it can be ensured that the hook-shaped portion of the frame is firmly locked with the end of the second inclined portion of the purlin to prevent the occurrence of decoupling.

[0014] Optionally, when the frame is fixedly connected to the purlin, the second inclined portion is in close contact with the first inclined portion. By making the second inclined portion in close contact with the first inclined portion, the structural stability of the frame after being fixedly connected to the purlin can be ensured.

[0015] Optionally, the end of the second inclined portion and the end of the hook portion abut against each other, thereby fixing the frame and the purlin. The connection between the frame and the purlin can be efficiently achieved by abutting the end of the second inclined portion and the end of the hook portion against each other.

[0016] Optionally, the bending structure also includes: a first base, which is formed by extending inward from the first inclined portion; wherein the second inclined portion is formed by extending downward and outward from the upper end of the side portion, and wherein, when the frame is fixedly connected to the purlin, the intersection of the side portion and the second inclined portion abuts against the first base.

[0017] Optionally, the mounting groove comprises: a first section, a second section and a third section connected in sequence, the first section and the third section are arranged relatively spaced apart, wherein the third section is connected to the bending structure; and / or

[0018] Frame in steel.

[0019] Optionally, the purlin includes: a second base portion, two oppositely disposed side portions, and two second inclined portions, wherein each second inclined portion is formed to extend downward and outward from an upper end portion of a corresponding side portion.

[0020] In a second aspect of the present invention, a method for installing a photovoltaic system is provided, wherein the photovoltaic system is the aforementioned photovoltaic system, the photovoltaic assembly comprises a photovoltaic panel, a first frame and a second frame, and a first purlin and a second purlin are arranged at intervals along the left-right direction on the photovoltaic bracket, wherein the method comprises:

[0021] Matching the hook portion of the first frame with the end of the second inclined portion of the first purlin; and

[0022] The second frame is rotated downward until the hook portion of the second frame is matched with the end of the second inclined portion of the second purlin.

[0023] In a third aspect of the present invention, a method for installing a photovoltaic system is provided, wherein the photovoltaic system is the aforementioned photovoltaic system, the photovoltaic assembly comprises a photovoltaic panel, a first frame and a second frame, and a first purlin and a second purlin are arranged at intervals along the left-right direction on the photovoltaic bracket, wherein the method comprises:

[0024] Place the hook portion of the first frame close to the second inclined portion of the first purlin, and place the hook portion of the second frame close to the second inclined portion of the second purlin, and push the photovoltaic assembly downward until the hook portion of the first frame is matched with the end of the second inclined portion of the first purlin and the hook portion of the second frame is matched with the end of the second inclined portion of the second purlin.

[0025] The photovoltaic system of the present invention can be installed by any one or both of the above two methods, which has high flexibility, and each method has simple steps and is easy to operate.

[0026] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Features, advantages, and exemplary embodiments of the present invention will be described below with reference to the accompanying drawings, in which like reference numerals refer to like elements, and in which:

[0028] Figure 1 It is a schematic diagram of the partial structure of a photovoltaic system according to an embodiment of the present invention.

[0029] Figure 2 yes Figure 1Partial front view of the photovoltaic system.

[0030] Figure 3 yes Figure 1 Schematic diagram of the structure of the frame of the photovoltaic module of the photovoltaic system.

[0031] Figure 4 yes Figure 1 Schematic diagram of the enlarged structure of some components of the photovoltaic system.

[0032] Figure 5 It is a schematic diagram of the partial structure of a photovoltaic system according to another embodiment of the present invention.

[0033] Figure 6 It is a partial structural schematic diagram of a photovoltaic system according to another embodiment of the present invention.

[0034] Figure 7 yes Figure 1 Schematic diagram of an installation process of a photovoltaic system.

[0035] Figure 8 yes Figure 1 Schematic diagram of another installation process of a photovoltaic system. DETAILED DESCRIPTION

[0036] The exemplary embodiments of the present invention are described in detail below with reference to the accompanying drawings. The description of the exemplary embodiments is merely exemplary and is by no means a limitation of the present invention and its application or usage. Moreover, the sizes and proportions of the components in the drawings are merely schematic and do not strictly correspond to actual products.

[0037] The present invention provides a photovoltaic system 500, referring to Figure 1 and Figure 2 The photovoltaic system 500 includes a photovoltaic assembly 400 and a photovoltaic support 5. The photovoltaic assembly 400 includes a photovoltaic panel 2 and a frame 1. Figure 2 and Figure 3 The frame 1 of the photovoltaic module 400 includes: a mounting groove 10 and a bending structure 20. The mounting groove 10 is used to accommodate the photovoltaic panel 2. The bending structure 20 is formed below the mounting groove 10, and the bending structure 20 includes a first inclined portion 12 and a hook portion 13, wherein the first inclined portion 12 extends downward and outward, and the hook portion 13 is bent inward from the first inclined portion 12 and defines a groove 130 opening upward. Figure 2 and Figure 4The photovoltaic bracket 5 is provided with a purlin 3, and the purlin 3 includes: a side portion 32 and a second inclined portion 31, wherein the second inclined portion 31 extends downward and outward from the side portion 32. The end 312 of the second inclined portion 31 and the hook portion 13 cooperate with each other to fix the frame 1 and the purlin 3. The photovoltaic system 500 of the embodiment of the present invention is configured to include a mounting groove 10 and a bending structure 20 having a first inclined portion 12 and a hook-shaped portion 13, and the purlin 3 is configured to include a side portion 32 and a second inclined portion 31, and the end 312 of the second inclined portion 31 and the hook-shaped portion 13 cooperate with each other to achieve a fixed connection between the frame 1 and the purlin 3. When used, no additional connectors such as bolts are required between the frame 1 and the purlin 3, and the cost is low. Since no additional connectors are required, there is no need to pre-install connectors, so that the installation can be completed in one or two steps; the installation process is simple, and only one worker is required to complete the installation or the installation can be completed automatically using automated equipment, which reduces the labor intensity of the workers and greatly improves the installation efficiency. That is, the photovoltaic system 500 of the embodiment of the present invention has a simple installation structure and high installation efficiency. Moreover, whether the photovoltaic system 500 of the embodiment of the present invention is installed manually or by automated equipment, the installation efficiency will be greatly improved. By setting the first inclined portion 12 and the second inclined portion 31, the inclined portion can provide guidance for the coordinated installation of the frame 1 and the purlin 3, further improving the installation efficiency, and the inclined surface of the inclined portion improves the installation tolerance space, increases the contact area between the frame 1 and the purlin 3, and reduces the risk of the end 312 of the second inclined portion 31 and the hook portion 13 being detached.

[0038] In the embodiment of the present invention, the frame 1 and the purlin 3 cooperate to produce surface contact, and the friction force generated thereby can achieve the limitation between the photovoltaic component 400 and the photovoltaic bracket 5 in the left and right directions, the up and down directions, and the front and back directions. Therefore, when the photovoltaic system 500 is applied to a slope, such as a roof slope, the stable installation of the photovoltaic component 400 can also be guaranteed.

[0039] In this article, the side of the frame 1 where the opening direction of the mounting groove 10 is located is referred to as the inner side, and the other side opposite to the side where the opening direction of the mounting groove 10 is located is referred to as the outer side; that is, "inward extension" means extending toward the side where the opening direction of the mounting groove 10 is located, and "outward extension" means extending away from the side where the opening direction of the mounting groove 10 is located. At the same time, the directional terms such as "left", "right", "up", "down", "horizontal", "vertical" etc. used in this article are all references to Figure 2 To describe, "front" and "back" are the inside and outside directions of the paper. Figure 2, showing two frames 1 and a purlin 3; for the frame 1 located on the left, the side where the opening direction of the mounting groove 10 is located is the left side, that is, the left side is the inner side of the frame 1, then the downward and outward extension of the first inclined portion 12 of the frame 1 means that the first inclined portion 12 extends downward and rightward, and the hook portion 13 bends inward from the first inclined portion 12 means that the hook portion 13 bends leftward from the first inclined portion 12, and accordingly, the downward and outward extension of the second inclined portion 31 on the left side of the purlin 3 means that the second inclined portion The inclined portion 31 extends downward and to the right; and for the frame 1 located on the right side, the side where the opening direction of the mounting groove 10 is located is the right side, that is, the right side is the inner side of the frame 1, then the downward and outward extension of the first inclined portion 12 of the frame 1 indicates that the first inclined portion 12 extends downward and to the left, and the hook-shaped portion 13 bends inward from the first inclined portion 12, which indicates that the hook-shaped portion 13 bends to the right, and accordingly, the downward and outward extension of the second inclined portion 31 on the right side of the purlin 3 indicates that the second inclined portion 31 extends downward and to the left.

[0040] In the photovoltaic system 500 of the embodiment of the present invention, the purlin 3 is usually fixed on the photovoltaic bracket 5, and then the photovoltaic assembly 400 including the photovoltaic panel 2 and the frame 1 is fixedly connected to the purlin 3. The photovoltaic bracket 5 can be, for example, a C-shaped structure or a U-shaped structure. If the additional connectors in the related art are used to connect the frame 1 and the photovoltaic bracket 5, it is necessary to make substantial changes to the photovoltaic bracket 5, such as grooving the photovoltaic bracket 5. This can easily cause the strength of the photovoltaic bracket 5 to be damaged, resulting in the installation structure being unable to be applied to, for example, a photovoltaic bracket 5 of a C-shaped structure. The photovoltaic system 500 of the embodiment of the present invention has almost no changes to the photovoltaic bracket 5, making it particularly suitable for a C-shaped structure. In addition, the second inclined portion 31 of the purlin 3 of the embodiment of the present invention is simple to deform and easy to install.

[0041] The present invention also provides an installation method of the above-mentioned photovoltaic system 500, wherein the photovoltaic assembly 400 includes a photovoltaic panel 2, a first frame 511 and a second frame 512, and a first purlin 521 and a second purlin 522 are arranged at intervals along the left and right directions on the photovoltaic bracket 5, wherein the method includes:

[0042] The hook portion 13 of the first frame 511 is matched with the end 312 of the second inclined portion 31 of the first purlin 521; and

[0043] The second frame 512 is rotated downward until the hook portion 13 of the second frame 512 is matched with the end 312 of the second inclined portion 31 of the second purlin 522 .

[0044] In the installation method of the embodiment of the present invention, the first frame 511 and the first purlin 521 are first matched with each other, and then the second frame 512 and the second purlin 522 are matched with each other. Only two steps are needed to complete the installation of the photovoltaic system 500.

[0045] The present invention also provides another installation method of the above-mentioned photovoltaic system 500, wherein the photovoltaic assembly 400 includes a photovoltaic panel 2, a first frame 511 and a second frame 512, and a first purlin 521 and a second purlin 522 are arranged at intervals along the left and right directions on the photovoltaic bracket 5, wherein the method includes:

[0046] The hook portion 13 of the first frame 511 is placed close to the second inclined portion 31 of the first purlin 521, and the hook portion 13 of the second frame 512 is placed close to the second inclined portion 31 of the second purlin 522, and the photovoltaic assembly 400 is pushed downward until the hook portion 13 of the first frame 511 is matched with the end 312 of the second inclined portion 31 of the first purlin 521 and the hook portion 13 of the second frame 512 is matched with the end 312 of the second inclined portion 31 of the second purlin 522.

[0047] In the installation method of the embodiment of the present invention, the first frame 511 and the first purlin 521, and the second frame 512 and the second purlin 522 are respectively coordinated with each other, so that the installation of the photovoltaic system 500 can be completed in only one step.

[0048] It can be understood that the frame 1, the first frame 511, and the second frame 512 are distinguished only for the sake of clear description, and are essentially the same components with the same characteristics. Similarly, the purlin 3, the first purlin 521, and the second purlin 522 are distinguished only for the sake of clear description, and are essentially the same components with the same characteristics.

[0049] The photovoltaic system 500 and the installation method of the photovoltaic system 500 of the present invention are further described in detail below in conjunction with the embodiments and drawings.

[0050] As mentioned above, the frame 1 of the photovoltaic module 400 may include a mounting groove 10 and a bending structure 20. The bending structure 20 is formed below the mounting groove 10, and the bending structure 20 includes a first inclined portion 12 and a hook portion 13, wherein the first inclined portion 12 extends downward and outward, and the hook portion 13 is formed by bending inward from the first inclined portion 12 and defines a groove 130 opening upward.

[0051] The specific structure of the mounting groove 10 only needs to be able to accommodate the photovoltaic panel 2. Figure 3 As shown, the mounting groove 10 may include: a first section 101, a second section 102 and a third section 103 connected in sequence, the first section 101 and the third section 103 are arranged relatively spaced apart, wherein the third section 103 is connected to the bending structure 20. In use, the first section 101 contacts the light-receiving surface of the photovoltaic panel 2, the second section 102 contacts the side surface of the photovoltaic panel 2, and the third section 103 contacts the backlight surface of the photovoltaic panel 2.

[0052] The first inclined portion 12 extends downward and outward. The inclination angle of the first inclined portion 12 relative to the surface of the photovoltaic panel 2 does not need to be limited, as long as it does not affect the cooperation between the second inclined portion 31 and the hook portion 13.

[0053] The hook-shaped portion 13 is formed by bending inward from the first inclined portion 12. The hook-shaped portion 13 can be formed by bending inward from the lower end of the first inclined portion 12, or the hook-shaped portion 13 can be formed by bending inward from a certain point in the middle and lower part of the first inclined portion 12. Figure 2 and Figure 3 As shown, the hook-shaped portion 13 is formed by bending inward from the lower end of the first inclined portion 12. In this way, the material required for the first inclined portion 12 of the frame 1 can be reduced, thereby reducing material waste.

[0054] The bending structure 20 may also include: a first base 11, the first base 11 is formed by extending inward from the first inclined portion 12; wherein the second inclined portion 31 is formed by extending downward and outward from the upper end of the side portion 32, and wherein, when the frame 1 is fixedly connected to the purlin 3, the intersection 311 of the side portion 32 and the second inclined portion 31 of the purlin 3 abuts against the first base 11. By providing the first base 11, the second inclined portion 31 can be sandwiched between the first base 11 and the hook portion 13, further ensuring the structural stability of the frame 1 after the fixed connection with the purlin 3; when the photovoltaic module 400 is subjected to a force in the direction of the purlin 3, the first base 11 of the frame 1 contacts the intersection 311 of the second inclined portion 31 and the side portion 32, so that the force-bearing surface is the side portion 32 of the purlin 3, which is not easy to deform and has a better force-bearing mode. The intersection 311 of the side portion 32 and the second inclined portion 31 may also be referred to as the upper end of the side portion 32 or the upper end of the second inclined portion 31. The first base portion 11 may be formed by extending inward from the upper end of the first inclined portion 12, or the first base portion 11 may be formed by extending inward from a certain point in the middle and upper part of the first inclined portion 12. Figure 2 and Figure 3 As shown, the first base portion 11 is formed by extending inward from the upper end of the first inclined portion 12. In this way, the material required for each part of the frame 1 can be reduced, thereby reducing material waste. Figure 2 and Figure 3 The first base 11, the first section 101, and the third section 103 are preferably all horizontally extended structures, and the first base 11 of the bending structure 20 is close to the third section 103 of the mounting groove 10, further reducing material waste and making the structure of the frame 1 more compact and stable.

[0055] The frame 1 can be made of steel, such as galvanized aluminum-magnesium steel, S550 steel, or high-strength steel. In this way, the frame 1 will not chemically corrode the steel purlin 3, and the market price is relatively low, which can save costs.

[0056] As mentioned above, the purlin 3 may include a side portion 32 and a second inclined portion 31, wherein the second inclined portion 31 extends downward and outward from the side portion 32. The second inclined portion 31 may extend downward and outward from the upper end of the side portion 32, or may extend downward and outward from a certain point in the middle and upper part of the side portion 32. Figure 2 As shown, the second inclined portion 31 extends downward and outward from the upper end of the side portion 32. In this way, the material required for each part of the purlin 3 can be reduced, reducing material waste, and at the same time facilitating contact with the first base portion 11. The inclination angle of the second inclined portion 31 relative to the surface of the photovoltaic panel 2 does not need to be limited, as long as it is not affected by the first inclined portion 12 and does not affect the cooperation between the second inclined portion 31 and the hook portion 13. Figure 2 In the case where the bending structure 20 has a first base 11, after the frame 1 is fixedly connected to the purlin 3, the upper end point of the second inclined portion 31, which is also the intersection 311 of the side portion 32 of the purlin 3 and the second inclined portion 31, abuts against the first base 11, and the lower end point of the second inclined portion 31 cooperates with the hook portion 13.

[0057] like Figures 2 to 4 As shown, the purlin 3 may generally include: a second base 33, two oppositely disposed side portions 32, and two second inclined portions 31, wherein each second inclined portion 31 is formed by extending downward and outward from the upper end of the corresponding side portion 32. The two symmetrical second inclined portions 31 can achieve the following functions. On the one hand, the two second inclined portions 31 can guide the hook portion 13 of the frame 1 to be pressed down smoothly. On the other hand, when the photovoltaic component 400 is subjected to a force in a direction away from the purlin 3, the ends 312 of the two second inclined portions 31 are subjected to an upward reaction force. As the force increases, in extreme cases, the two ends 312 of the two second inclined portions 31 press against each other to form a "closed door state". At this time, the frame 1 of the photovoltaic component 400 cannot escape; and when the photovoltaic component 400 is subjected to a force in a direction toward the purlin 3, the first base 11 of the frame 1 contacts the intersection 311 of the corresponding second inclined portion 31 and the side portion 32, respectively, so that the force-bearing surface is the two side portions 32 of the purlin 3, which is not easy to deform and has a better force-bearing mode.

[0058] Optionally, according to another embodiment, the purlin 3 may include a side portion 32 and a second inclined portion 31. That is, each purlin 3 may be connected to a frame 1.

[0059] like Figure 1 and Figure 2 As shown, the second base 33 of the purlin 3 is usually mounted to the photovoltaic bracket 5 by means of bolts 4. This is done by drilling holes in the photovoltaic bracket 5 and the second base 33 of the purlin 3. The photovoltaic bracket 5 and the purlin 3 can also be fixed to each other by other connection methods.

[0060] from Figures 1 to 3 It can be seen that one purlin 3 can be equipped with two frame frames 1, the frame frame 1 on the left side cooperates with the side portion 32 of the purlin 3 on the left side and the second inclined portion 31 on the left side, while the frame frame 1 on the right side cooperates with the side portion 32 of the purlin 3 on the right side and the second inclined portion 31 on the right side.

[0061] As described above, in the photovoltaic system 500 of the present invention, the end 312 of the second inclined portion 31 and the hook portion 13 cooperate with each other to fix the frame 1 to the purlin 3. The cooperation between the end 312 of the second inclined portion 31 and the hook portion 13 can be achieved by any method in the prior art that can achieve the connection of two components.

[0062] In some embodiments, the end 312 of the second inclined portion 31 is engaged with the groove 130, thereby fixing the frame 1 and the purlin 3. Figure 2 and Figure 3 As shown, the hook-shaped portion 13 defines a groove 130, and the end 312 of the second inclined portion 31 is engaged in the groove 130. The hook-shaped portion 13 cooperates with the second inclined portion 31, and the interference engagement of the second inclined portion 31 and the hook-shaped portion 13 is completed under the action of elastic deformation. By engaging the end 312 of the second inclined portion 31 with the groove 130, the frame 1 and the purlin 3 can be firmly fixed. At the same time, the friction force generated by the surface contact formed by the interference fit of the frame 1 and the purlin 3 can realize the stable limitation between the photovoltaic assembly 400 and the photovoltaic bracket 5 in the left-right direction, the up-down direction, and the front-back direction.

[0063] The second inclined portion 31 and the hook portion 13 can be configured such that: the projection of the inner side of the end 312 of the second inclined portion 31 on the horizontal plane is located within the projection of the hook portion 13 on the horizontal plane, and the projection length of the end 312 of the second inclined portion 31 on the horizontal plane is less than or equal to 2 / 3 of the projection length of the hook portion 13 on the horizontal plane. By limiting the projection position and length of the second inclined portion 31 and the hook portion 13, it can be ensured that the hook portion 13 of the frame 1 is firmly locked with the end 312 of the second inclined portion 31 of the purlin 3 to prevent the occurrence of decoupling. Figure 4 A and B show the projection of the hook-shaped portion 13 on the horizontal plane, and C and D show the projection of the end 312 of the second inclined portion 31 on the horizontal plane. It can be seen that the projections C and D of the inner and outer sides of the end 312 of the second inclined portion 31 on the horizontal plane are located within the projection AB of the hook-shaped portion 13 on the horizontal plane, and the length of the projection CD of the end 312 of the second inclined portion 31 on the horizontal plane is less than 2 / 3 of the length of the projection AB of the hook-shaped portion 13 on the horizontal plane. The projection length of the end 312 of the second inclined portion 31 on the horizontal plane can be 1 / 4, 1 / 3, 1 / 2, etc. of the projection length of the hook-shaped portion 13 on the horizontal plane.

[0064] Continue to refer Figure 2 In a preferred embodiment, when the frame 1 is fixedly connected to the purlin 3, the second inclined portion 31 is in close contact with the first inclined portion 12. By making the second inclined portion 31 in close contact with the first inclined portion 12, the contact area between the frame 1 and the purlin 3 can be increased, thereby ensuring the structural stability after the frame 1 and the purlin 3 are fixedly connected.

[0065] In other embodiments, the end 312 of the second inclined portion 31 abuts against the end (not numbered) of the hook portion 13, thereby fixing the frame 1 to the purlin 3. By abutting the end 312 of the second inclined portion 31 against the end of the hook portion 13, the frame 1 and the purlin 3 can be efficiently connected. Figure 5 As shown, the end 312 of the second inclined portion 31 abuts against the end of the hook portion 13. Figure 6 As shown, the end 312 of the second inclined portion 31 and the end of the hook portion 13 abut against each other. Figure 5 and Figure 6 The difference between the embodiments is that the lengths of the first inclined portion 12 and the second inclined portion 31 are different. Considering the use and cost of materials, the lengths of the first inclined portion 12 and the second inclined portion 31 are not too long, and only need to ensure that the end 312 of the second inclined portion 31 and the hook portion 13 can abut against each other.

[0066] Figure 7 Yes Install Figure 1 A schematic diagram of a photovoltaic system 500. The photovoltaic assembly 400 includes a photovoltaic panel 2, a first frame 511 and a second frame 512, that is, the left and right ends of the photovoltaic panel 2 are respectively accommodated in the mounting groove 10 of the first frame 511 and the mounting groove 10 of the second frame 512. The first purlin 521 and the second purlin 522 are arranged at intervals along the left and right directions on the photovoltaic bracket 5. The end 312 of the second inclined portion 31 and the groove 130 are matched with each other by snap connection. Figure 7 The installation method includes: moving the photovoltaic assembly 400 to the top of the purlin 3; then, snapping the groove 130 of the hook portion 13 of the first frame 511 with the end 312 of the second inclined portion 31 of the first purlin 521 located on the right side, see Figure 7 a), wherein the dotted box portion also shows an enlarged schematic diagram; then, the second frame 512 is moved along Figure 7 Turn and press in the direction of the arrow shown in Figure 7 b), until the first base portion 11 of the first frame 511 is tangent to the side portion 32 of the purlin 3 on the right and the intersection 311 of the second inclined portion 31, at this time, the groove 130 of the hook portion 13 of the second frame 512 is also snap-fitted with the end 312 of the second inclined portion 31 of the second purlin 522 on the left, see Figure 7In the installation method of this embodiment, the first frame 511 and the first purlin 521 are first matched with each other, and then the second frame 512 and the second purlin 522 are matched with each other.

[0067] Figure 8 Yes Install Figure 1 Another schematic diagram of a photovoltaic system 500. The photovoltaic assembly 400 includes a photovoltaic panel 2, a first frame 511 and a second frame 512, that is, the left and right ends of the photovoltaic panel 2 are respectively accommodated in the mounting groove 10 of the first frame 511 and the mounting groove 10 of the second frame 512. The first purlin 521 and the second purlin 522 are arranged at intervals along the left and right directions on the photovoltaic bracket 5. The end 312 of the second inclined portion 31 and the groove 130 are matched with each other by snap connection. Figure 8 The installation method includes: moving the photovoltaic module 400 to the top of the purlin 3, see Figure 8 a), wherein the dotted box portion also shows an enlarged schematic diagram; then, the hook portion 13 of the frame 1 and / or the photovoltaic panel 2 are moved along Figure 8 Press down vertically in the direction of the arrow shown in , until the hook portion 13 of the first frame 511 is in close contact with the second inclined portion 31 on the right side of the first purlin 521 and the hook portion 13 of the second frame 512 is in close contact with the second inclined portion 31 on the left side of the second purlin 522, see Figure 8 b); Continue to push the photovoltaic assembly 400 downward until the groove 130 of the hook portion 13 of the first frame 511 is engaged with the end 312 of the second inclined portion 31 of the first purlin 521 on the right side and the groove 130 of the hook portion 13 of the second frame 512 is engaged with the end 312 of the second inclined portion 31 of the second purlin 522 on the left side, see Figure 8 In step c), the entire installation is completed. In this installation method, the first frame 511 and the first purlin 521, and the second frame 512 and the second purlin 522 are matched with each other at the same time.

[0068] After the installation was completed, a test was conducted and it was found that under the standard load, the strength of the frame 1 and the purlin 3 of the photovoltaic system 500 was qualified and the deflection deformation met the building specifications.

[0069] No additional connectors are required between the frame 1 and the purlin 3 of the photovoltaic system 500 of the embodiment of the present invention, which reduces the installation cost; greatly reduces the installation steps and reduces the labor intensity of workers; the installation process has low requirements for positioning accuracy and can be directly installed in conjunction with a robot, greatly improving the installation efficiency.

[0070] The photovoltaic system 500 of the embodiment of the present invention reduces the steel consumption of the frame 1 by improving the structure of the frame 1 and the purlin 3; the structure of the purlin 3 makes the connection between the photovoltaic panels 2 tighter, shortens the distance between the photovoltaic panels 2, and allows more photovoltaic panels 2 to be installed under the ultra-large span bracket.

[0071] The photovoltaic system 500 of the embodiment of the present invention can be installed by any one or both of the above two methods, which has high flexibility, and each method has simple steps and is easy to operate.

[0072] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "an example", "some embodiments", or "preferred embodiment" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0073] The embodiments of the present invention are described in detail above. However, aspects of the present invention are not limited to the above embodiments. Various modifications and substitutions may be applied to the above embodiments without departing from the scope of the present invention.

Claims

1. A photovoltaic system, comprising a photovoltaic module and a photovoltaic support, wherein: The photovoltaic assembly includes a frame, the frame includes: a mounting groove and a bending structure, the mounting groove is used to accommodate the photovoltaic panel, the bending structure is formed below the mounting groove, the bending structure includes a first inclined portion and a hook-shaped portion, wherein the first inclined portion is formed to extend downward and outward, and the hook-shaped portion is formed by bending inward from the first inclined portion and defines a groove opening upward; The photovoltaic support is provided with a purlin, and the purlin includes: a side portion and a second inclined portion, wherein the second inclined portion extends downward and outward from the side portion; Wherein, the end of the second inclined portion and the hook-shaped portion cooperate with each other to fix the frame and the purlin.

2. The photovoltaic system according to claim 1, wherein: The end of the second inclined portion is engaged with the groove, thereby fixing the frame and the purlin.

3. The photovoltaic system according to claim 2, wherein: The second inclined portion and the hook-shaped portion are configured as follows: The projection of the inner side of the end of the second inclined portion on the horizontal plane is located within the projection of the hook-shaped portion on the horizontal plane, and The projected length of the end of the second inclined portion on the horizontal plane is less than or equal to 2 / 3 of the projected length of the hook-shaped portion on the horizontal plane.

4. The photovoltaic system according to claim 2, wherein: When the frame is fixedly connected to the purlin, the second inclined portion is in close contact with the first inclined portion.

5. The photovoltaic system according to claim 1, wherein: The end of the second inclined portion and the end of the hook-shaped portion abut against each other, thereby fixing the frame and the purlin.

6. The photovoltaic system according to any one of claims 1 to 5, wherein: The bending structure also includes: a first base, which is formed by extending inward from the first inclined portion; wherein the second inclined portion is formed by extending downward and outward from the upper end of the side portion, and wherein, when the frame is fixedly connected to the purlin, the intersection of the side portion and the second inclined portion abuts against the first base.

7. The photovoltaic system according to any one of claims 1 to 5, wherein: The installation groove comprises: a first section, a second section and a third section connected in sequence, the first section and the third section are arranged relatively spaced apart, wherein the third section is connected to the bending structure; and / or The frame is made of steel.

8. The photovoltaic system according to any one of claims 1 to 5, wherein: The purlin includes: a second base portion, two oppositely disposed side portions, and two second inclined portions, wherein each of the second inclined portions is formed to extend downward and outward from an upper end portion of a corresponding side portion.

9. A method for installing a photovoltaic system, wherein the photovoltaic system is a photovoltaic system according to any one of claims 1 to 8, wherein the photovoltaic assembly comprises a photovoltaic panel, a first frame and a second frame, and a first purlin and a second purlin are arranged at intervals along the left-right direction on the photovoltaic bracket, wherein: The method comprises: Matching the hook portion of the first frame with the end of the second inclined portion of the first purlin; and The second frame is rotated downward until the hook portion of the second frame is matched with the end of the second inclined portion of the second purlin.

10. A method for installing a photovoltaic system, wherein the photovoltaic system is a photovoltaic system according to any one of claims 1 to 8, wherein the photovoltaic assembly comprises a photovoltaic panel, a first frame and a second frame, and a first purlin and a second purlin are arranged at intervals along the left-right direction on the photovoltaic bracket, wherein: The method comprises: Place the hook portion of the first frame close to the second inclined portion of the first purlin, and place the hook portion of the second frame close to the second inclined portion of the second purlin, and push the photovoltaic assembly downward until the hook portion of the first frame is matched with the end of the second inclined portion of the first purlin and the hook portion of the second frame is matched with the end of the second inclined portion of the second purlin.

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