Card holder, mounting fixing structure, photovoltaic device and mounting fixing method

Abstract

The present invention discloses a holder, which is used to install and fix the frame of a photovoltaic module, comprising: a first end portion, which is directly fastened to the installation object; a second end portion, which is opposite to the first end portion and fastened to the installation wall of the profile structure of the frame, and then fastened to the installation object; and a middle portion, which is located between the first end portion and the second end portion and passes through the first side wall and the second side wall of the profile structure intersecting with the installation wall. The present invention also discloses an installation and fixing structure, a photovoltaic device and an installation and fixing method comprising the holder.

Description

Technical Field

[0001] The invention relates to a card holder, an installation and fixing structure, a photovoltaic device and an installation and fixing method. Background Art

[0002] For a long time, most of the frames of photovoltaic modules have been made of aluminum alloy. With the rapid development of the photovoltaic industry, the amount of aluminum used in the photovoltaic industry has increased year by year. The production and processing of aluminum profiles consumes a lot of electricity, resulting in a large amount of carbon emissions. For the needs of offshore photovoltaic application scenarios, the marine environment has very strict requirements on the salt spray corrosion resistance of photovoltaic modules. Traditional metal material frames, including aluminum alloy frames and steel frames, are easily corroded in offshore applications, and there is a risk of failure in the long life cycle of photovoltaic modules of 25-30 years.

[0003] Glass fiber reinforced polyurethane composite frames can directly reduce costs by about 15%, and the strength can reach over 900Mpa, which is about 4-6 times that of aluminum alloy. At the same time, the carbon emissions during production are only about 2% of aluminum alloy, and they are not corroded by salt spray. In addition, the composite frame is an insulator, which can reduce the PID risk of the component.

[0004] The main production process of glass fiber reinforced composite material frame is shown in Fig.13 , wherein the production equipment 10 used in the production process includes a reinforcing fiber providing device 1, a yarn guide plate 2, a glue injection box 3, a mold 4, a polyurethane resin providing device 5, a traction device 6 and a cutting device 7. The glass fiber enters the mold through pultrusion, and polyurethane is injected into the mold for adhesion and curing. After extrusion, it is cut into sections and the surface is sprayed. The strength of polyurethane is only 30-40Mpa, and the strength of the frame is mainly determined by the distribution of glass fibers. At present, the main structure of glass fiber is long glass fiber along the pultrusion direction inside + fabric-like glass fiber on the surface. It is difficult to have continuous glass fiber reinforcement perpendicular to the pultrusion direction, resulting in anisotropic material. The strength along the pultrusion direction is very high, while the strength perpendicular to the pultrusion direction is very low, only 50-60Mpa. Therefore, when conducting mechanical load tests under IEC / UL standards, stress is concentrated at the mounting hole position, and structural damage such as tearing is prone to occur, such as Fig.14 This risk of damage is shown.

[0005] Patent application publication No. CN114598252A discloses a fixing structure. Fig.15 and Fig.16It is shown in that an opening is provided on the D surface of the profile, and a socket structure with a hook is used for connection. The socket hook is used to pass through the frame mounting hole on the mounting edge of the solar module frame and is engaged with the corresponding vertical side wall of the mounting edge. The following defects exist in the installation using the socket structure disclosed in the application: although the stress area of ​​the profile can be increased to a certain extent when mechanical load is applied, the stress value is still at a high level, which will cause cracks and other damages at the position of the opening; the position of the opening and the socket are not completely matched, and a certain range of displacement will occur during the dynamic load test, generating impact force and causing damage to the position of the mounting hole; and the socket has a high hardness, which is easy to cause surface damage to the frame. Summary of the invention

[0006] The present invention is completed to solve the problems existing in the prior art. The present invention aims to significantly increase the stress area of ​​the component when it is subjected to load, reduce the stress value at the stress concentration position, and reduce the risk of tearing of the mounting hole; in addition, the present invention also aims to reduce the degree of twisting and deformation of the frame and improve the stability of the structure.

[0007] According to one aspect of the present invention, there is provided a holder for installing and fixing a frame of a photovoltaic module, comprising: a first end portion, which is directly fastened to an installation object; a second end portion, which is opposite to the first end portion and is fastened to an installation wall of a profile structure of the frame, and further fastened to the installation object; and a middle portion, which is located between the first end portion and the second end portion and passes through a first side wall and a second side wall of the profile structure that intersect with the installation wall.

[0008] In some embodiments, the height of the first end is different from the height of the second end.

[0009] In some embodiments, a first gap is provided between an end surface of the first end portion of the holder facing the profile structure and a first side wall of the profile structure.

[0010] In some embodiments, an end surface of the first end portion of the holder facing the profile structure is in contact with the first side wall of the profile structure.

[0011] In some embodiments, the card base has opposite third and fourth surfaces, and the first side wall and the second side wall of the profile structure have corresponding first and second through holes, respectively. When the card base is installed and the frame is fixed, the middle part passes through the first and second through holes so that the third surface of the card base abuts against the first inner surface of the first through hole and the third inner surface of the second through hole, and there is a gap between the fourth surface of the card base and the second inner surface of the first through hole and the fourth inner surface of the second through hole, the first inner surface is opposite to the third inner surface, and the second inner surface is opposite to the fourth inner surface.

[0012] In some embodiments, the height of the middle portion is less than the height of the first end portion and less than the height of the second end portion.

[0013] In some embodiments, the first inner surface of the first through hole of the first side wall and the third inner surface of the second through hole of the second side wall are not coplanar with the surface of the installation wall away from the installation object and are spaced a certain distance therefrom.

[0014] In some embodiments, a second gap is provided between an end surface of the second end portion of the holder facing the profile structure and a second side wall of the profile structure.

[0015] In some embodiments, an end surface of the second end portion of the holder facing the profile structure is in contact with the second side wall of the profile structure.

[0016] According to another aspect of the present invention, there is provided a mounting and fixing structure, which is used to mount and fix a photovoltaic component to an installation object and comprises: the above-mentioned socket; and a frame, wherein the frame comprises a profile structure and has a first side wall and a second side wall, and the main body of the socket passes through the first side wall and the second side wall so that the first end of the socket is directly fastened to the installation object and the second end of the socket is fastened to the profile structure and then to the installation object.

[0017] According to another aspect of the present invention, there is provided a photovoltaic device, comprising: a photovoltaic component; and an installation and fixing structure; wherein the photovoltaic component is installed on an installation object through the installation and fixing structure.

[0018] According to another aspect of the present invention, there is provided an installation and fixing method for installing and fixing a photovoltaic component to an installation object, the method comprising the following steps: providing a socket; providing a frame of the photovoltaic component, the frame comprising a profile structure; passing the socket through a first side wall and a second side wall of the profile structure; using a first fastener to directly fasten a first end of the socket to the installation object; and using a second fastener to fasten a second end of the socket to a mounting wall of the profile structure, and then to the installation object.

[0019] The technical solution provided by the present invention may include the following beneficial effects: (1) increasing the stress-bearing area of ​​the profile when loaded, reducing the stress value at the stress concentration position, and avoiding tearing of the mounting hole; (2) the frame of the composite material has good toughness but poor rigidity, and high load will cause large elastic deformation. In this case, the installation and fixing method of the present invention can play a limiting role on the C surface of the frame. In this way, when affected by the actual load, the fixing of the two ends of the bracket can reduce the twisting deformation of the frame and improve the stability of the structure.

[0020] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0022] Figure 1 A perspective view showing a profile structure of a first embodiment of the present invention;

[0023] Figure 2 A perspective view of a card holder according to a first embodiment of the present invention is shown;

[0024] Figure 3 It shows an installation perspective view of the installation and fixing structure of the first embodiment of the present invention;

[0025] Figure 4 It shows a right side view of the mounting and fixing structure of the first embodiment of the present invention;

[0026] Figure 5 A front view of the mounting and fixing structure of the first embodiment of the present invention is shown;

[0027] Figure 6 A perspective view showing a profile structure of a second embodiment of the present invention;

[0028] Figure 7 A perspective view of a card holder according to a second embodiment of the present invention is shown;

[0029] Figure 8 It shows a perspective view of the installation of the installation and fixing structure of the second embodiment of the present invention;

[0030] Fig. 9 A right side view of the mounting and fixing structure of the second embodiment of the present invention is shown;

[0031] Fig.10 A front view of the mounting and fixing structure of the second embodiment of the present invention is shown;

[0032] Fig.11 A schematic diagram of a photovoltaic device according to an embodiment of the present invention is shown;

[0033] Fig.12 A flow chart showing an installation and fixing method according to an embodiment of the present invention is shown;

[0034] Fig.13A schematic diagram showing a frame production device of the prior art;

[0035] Fig.14 A schematic diagram showing structural damage that is prone to occur in a frame of the prior art;

[0036] Fig.15 A schematic diagram showing a fixing structure of the prior art; and

[0037] Fig.16 A schematic diagram showing another fixing structure in the prior art is shown. DETAILED DESCRIPTION

[0038] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0039] It should be noted that the drawings in the present invention are not necessarily drawn according to scale. In order to show the structure more clearly, the drawings may enlarge or reduce a part thereof.

[0040] The present invention provides a holder for installing and fixing the frame of a photovoltaic module, comprising: a first end portion, which is directly fastened to the installation object; a second end portion, which is opposite to the first end portion and fastened to the installation wall of the profile structure of the frame, and then fastened to the installation object; and a middle portion, which is located between the first end portion and the second end portion, and passes through the first side wall and the second side wall of the profile structure intersecting with the installation wall. Through the design of the tooling holder matching structure, the two ends are fixed, which can increase the force-bearing area of ​​the composite material frame when loaded, reduce the stress value, and greatly reduce or reduce the risk of tearing caused by insufficient lateral strength of the composite material frame.

[0041] First embodiment

[0042] Figure 1-5 A first embodiment of the present invention is shown. Figure 1 FIG. 2 shows a schematic diagram of a profile structure 20 according to a first embodiment of the present invention. Figure 1 As shown, the profile structure 20 includes a first side wall 22, a second side wall 24 and a mounting wall 23. The first side wall 22 and the second side wall 24 are arranged on the mounting wall 23 at an angle so that the mounting wall 23 connects the first side wall 22 and the second side wall 24. The above angle is, for example, about 90 degrees. The mounting wall 23 extends beyond the second side wall 24 by a certain length, but does not extend beyond the first side wall 22. Figure 5, the mounting wall 23 extends from the first side wall 22 to the right to the second side wall 24 and continues to extend to the right for a certain length. The size of each wall is not specifically limited, and those skilled in the art can design it according to actual needs. In this article, the first side wall 22 is also referred to as the B side, the second side wall 24 is also referred to as the D side, and the mounting wall 23 is also referred to as the C side. Those skilled in the art will know which part of the frame the A side, B side, C side and D side of the frame are. The specific structure of the profile structure 20 is not specifically limited. The specific structure of the profile structure 20 shown in the drawings of the present application is only exemplary. The profile structure 20 can adopt a structure other than the structure shown in the drawings. For example, the profile structure 20 can adopt a profile without an A side to increase the anti-dust accumulation function. The mounting wall 23 is used to be fixed to an installation object (not shown), and the photovoltaic module is installed on the above-mentioned installation object through the profile structure 20. The specific structure of the installation object is not limited in this application.

[0043] A first mounting hole 70 is provided in the C surface, and the first mounting hole can be, for example, a round hole, or a hole of other shapes, as long as the mounting and fixing functions can be achieved. Corresponding first through holes 26 and second through holes 28 are provided on the B surface and the D surface, respectively. In the drawings, the first through holes and the second through holes are shown as elliptical holes, but the shapes of these through holes can also be adjusted to avoid stress concentration in the through holes.

[0044] Figure 2 A perspective view of a holder 30 according to a first embodiment of the present invention is shown. In this embodiment, the holder 30 is used to install and fix the frame of a photovoltaic module, and may be an L-shaped tooling holder. The holder 30 includes: a first end 32, which is directly fastened to the installation object; a second end 36, which is opposite to the first end 32 and is fastened to the installation wall 23 of the profile structure 20 of the frame, and is further fastened to the installation object; and a middle portion 34, which is located between the first end 32 and the second end 36, and passes through the first side wall 22 and the second side wall 24 of the profile structure 20 that intersect with the installation wall 23. The height of the second end 36 is different from the height of the first end 32, and it can be understood that the height here also refers to the thickness. Specifically, as Figure 2 As shown, the height of the second end portion 36 is smaller than that of the first end portion 32 , so that a step is formed between the first end portion 32 and the middle portion 34 , and the first end portion 32 is formed with a protrusion protruding from the second end portion 36 and the middle portion 34 .

[0045] The holder 30 is provided with a second mounting hole 60 for mounting the profile structure 20 on the mounting object, that is, a second mounting hole matching the profile mounting hole. Figure 2The first end portion 32 on the left side is outside the cavity of the profile structure 30 after installation. The installation method, height and shape of this part are not specifically limited, as long as the profile structure 20 can be reliably installed and fixed to the installation object and the installation is guaranteed not to be loose and the base is not deformed when a load is applied. The base 30 is made of an overall rigid material, and its rigidity is also guaranteed not to be loose and the base is not deformed when a load is applied. The specific material used is not limited. If the strength requirements of the base 30 are high when loaded, in some embodiments, if the base 30 uses a material with a higher hardness, the contact surface between the base 30 and the frame 20 can be rounded to prevent surface damage.

[0046] The card holder 30 may be an integrated structure, i.e., formed as a single component; or a split structure, such as a two-component structure in which the first end 32 is one part and the middle part 34 and the second end 36 are another part, or a two-component structure in which the protrusion of the first end 32 protruding from the middle part 34 is one part and the rest of the card holder 30 is another part, etc., or a split structure formed by more components may be used. In the split structure, the various parts may be combined to form the card holder 30 by welding, bonding, or fastening with fasteners, as long as the card holder 30 has sufficient rigidity.

[0047] refer to Figure 3 and Figure 5 , shows the mounting and fixing structure 100 when the profile structure 20 is mounted and fixed by the holder 30. The mounting and fixing structure 100 of the photovoltaic module includes the holder 30 and a frame, and the frame includes the profile structure 20. The holder 30 is inserted into the first through hole 26 and the second through hole 28 of the profile structure 20, and is fixed to the installation object by fasteners such as screws, bolts, rivets, etc.

[0048] The profile structure 20 has a first side wall 22 and a second side wall 24. The main body of the card holder 30 passes through the first through hole 26 of the first side wall 22 and the second through hole 28 of the second side wall 24 so that the second end 36 of the card holder 30 is fastened to the mounting wall 23 of the profile structure 20 and the first end 32 of the card holder 30 is fastened to the mounting object. The first fastener 50 passes through the second mounting hole 60 in the card holder 30 and enters the mounting object for fixing. The second fastener 52 passes through the second mounting hole 60 in the card holder 30 and the first mounting hole 70 in the mounting wall 23 and enters the mounting object for fixing.

[0049] In some embodiments, if the frame is twisted too much and contacts the card holder 30 when the load is actually applied, causing damage to the B surface, a first interval Δd can be set at the contact position between the card holder 30 and the B surface of the frame to release the twisting displacement and avoid damage, such as Figure 5In this case, a first interval Δd1 is provided between the clamping seat end surface 312 of the first end portion 32 of the clamping seat 30 facing the profile structure 20 and the profile structure 20 .

[0050] In some embodiments, the actual twisting degree is small and does not damage the surface, so the first interval Δd may not be set. At this time, the holder end surface 312 of the first end 32 of the holder 30 facing the profile structure contacts the second side wall 24 of the profile structure 20 .

[0051] In addition, considering the damage of the through-holes by the torsional force, different implementation methods can also be adopted. In some embodiments, if the frame is twisted too much when the load is actually applied and contacts the card seat 30, causing the first through-hole and the second through-hole to be damaged, the height difference (also called "gap") Δh between the height of the profile structure 20 and the height of the through-hole can be designed to release the displacement to avoid damage, such as Figure 4 As shown. Return to reference Figure 1-2 The card holder 30 has a third surface 322 and a fourth surface 320 opposite to each other, and the first side wall 22 and the second side wall 24 of the profile structure 20 respectively have corresponding first through holes 26 and second through holes 28. When the card holder 30 is used to install and fix the frame, the middle portion 34 passes through the first through holes 26 and the second through holes 28 so that the third surface 322 of the card holder 30 abuts against the first inner surface 262 of the first through hole 26 and the third inner surface 282 of the second through hole 28, and the fourth surface 320 of the card holder 30 is separated from the second inner surface 264 of the first through hole 26 and the fourth inner surface 284 of the second through hole 28 by a height difference Δh, the first inner surface 262 is opposite to the third inner surface 282, and the second inner surface 264 is opposite to the fourth inner surface 284.

[0052] In some embodiments, if the actual twisting degree is so small that the through hole is not damaged, the height difference Δh may not be set. At this time, the fourth surface 320 of the holder 30 contacts the second inner surface 264 of the first through hole 26 and the fourth inner surface 284 of the second through hole 28 .

[0053] In addition to the composite material frame mentioned in this article, aluminum alloy frames, steel frames and other frames of the same structure can all be fixed using the socket and installation fixing structure disclosed in this embodiment, which can reduce the risk of twisting deformation and avoid cracks or tears in through holes and installation holes.

[0054] The present invention adopts the above-mentioned clamping seat for fixing, thereby increasing the force-bearing area during load-bearing (the force-bearing area of ​​the bottom surface of the frame and the bottom surface of the cavity), and at the same time realizes the fixation of both ends to limit deformation such as torsion.

[0055] Second embodiment

[0056] Figure 6-10A second embodiment of the present invention is shown, and components in the second embodiment are given the same reference numerals as corresponding components in the first embodiment.

[0057] Figure 6 FIG. 2 is a schematic diagram of a profile structure 20 according to a second embodiment of the present invention.

[0058] The profile structure 20 of the second embodiment is different from the profile structure 20 of the first embodiment in that the opening positions of the first through hole 26 and the second through hole 28 are changed.

[0059] In the first embodiment, the first inner surface 262 of the first through hole 26 of the first side wall 22 and the third inner surface 282 of the second through hole 28 of the second side wall 24 are coplanar with the surface of the installation wall 23 away from the installation object. In the second embodiment, the first inner surface 262 of the first through hole 26 of the first side wall 22 and the third inner surface 282 of the second through hole 28 of the second side wall 24 are not coplanar with the surface of the installation wall 23 away from the installation object, and the first inner surface 262 of the first through hole 26 of the first side wall 22 and the third inner surface 282 of the second through hole 28 of the second side wall 24 are spaced a certain distance from the surface of the installation wall 23 away from the installation object. That is, compared with the first embodiment, the opening positions of the first through hole 26 and the second through hole 28 in the second embodiment are moved up to a certain extent, see Figure 6 .

[0060] At this time, if Figure 7 As shown, the portion of the holder 30 outside the cavity of the profile structure 20 (the first end 32 and the second end 36) also needs to be increased in height accordingly so that the height of the middle portion 34 is less than the height of the first end 32 and less than the height of the second end 36, so as to achieve a close fit with the profile structure 20. Figure 8 That is, the card holder 30 can be a C-type tooling card holder, in which Δh2 is less than Δh1 (see Figure 7 ). The second end 36 of the card holder 30 is installed on the C surface of the profile structure 20, the first end 32 of the card holder 30 is installed on the installation object, and the middle part 34 of the card holder 30 passes through the cavity of the profile structure 20 via the first through hole 26 and the second through hole 28 of the profile structure 20. During installation, if the card holder 30 is inserted and installed from the outside of the profile structure 20, the height difference Δh2 between the right part (the second end 36) of the card holder 30 and the middle part 34 is required to be smaller than the gap (height difference) Δh between the middle part 34 of the tooling card holder at the cavity position and the first through hole and the second through hole (see Figure 7 and 9 ); if the left portion (first end portion 32) of the holder 30 is smaller in height, smaller than the height of the first through hole and the second through hole of the profile structure 20, there is no such requirement.

[0061] Likewise, in some embodiments, the position of the tooling holder 30 facing the profile structure 20 may be provided with a first interval Δd1 and a second interval Δd2 to release the torsional displacement and avoid damage, such as Fig.10 That is, a first interval Δd1 is provided between the end surface 312 of the first end 32 of the holder 30 facing the profile structure 20 and the first side wall 22 of the profile structure 20. A second interval Δd2 is provided between the end surface 312 of the second end 36 of the holder 30 facing the profile structure 20 and the second side wall 24 of the profile structure 20.

[0062] In some embodiments, when the actual degree of torsion is very small and does not damage the surface, the above interval may not be set. That is, the end surfaces of the first end 3 and the second end 36 of the holder 30 facing the profile structure 20 are in contact with the corresponding one of the first side wall 22 and the second side wall 24 of the profile structure 20. At this time, the cavity reduces the force area, but it is still at a high level, and fixing the cavity at both ends can also prevent torsion.

[0063] In the present invention, by adopting the design of the tooling holder in conjunction with the structure to fix the two ends, the force-bearing area of ​​the composite frame when loaded can be increased, the stress value can be reduced, and the tearing risk caused by insufficient lateral strength of the composite frame can be greatly reduced or minimized.

[0064] Variations

[0065] Those skilled in the art will appreciate that the above embodiments may be modified. A gap may be provided at only one position of the tooling holder 30 facing the profile structure 20. For example, a first gap Δd1 is provided between the end surface 312 of the first end 32 of the holder 30 facing the profile structure 20 and the first side wall of the profile structure 20, and the end surface of the second end 36 of the holder 30 facing the profile structure 20 contacts the second side wall 24 of the profile structure 20. Alternatively, a second gap Δd2 is provided between the end surface 36 of the second end 36 of the holder 30 facing the profile structure 20 and the second side wall 24 of the profile structure 20, and the end surface 312 of the first end 32 of the holder 30 facing the profile structure 20 contacts the first side wall 22 of the profile structure 20.

[0066] The variant example of the present invention also achieves fixing the two ends of the card seat, increasing the force-bearing area when the frame is loaded, reducing the stress value, and greatly reducing or minimizing the risk of tearing caused by insufficient lateral strength of the frame.

[0067] Third embodiment

[0068] Fig.11 The schematic diagram of the photovoltaic device according to the embodiment of the present invention is shown. The photovoltaic device 300 comprises: a photovoltaic component 200; and the above-mentioned mounting and fixing structure 100. The photovoltaic component 200 is installed on the installation object through the mounting and fixing structure 100.

[0069] The photovoltaic device of the present invention achieves installation reliability by adopting the installation and fixing structure 100, thereby increasing the overall service life of the photovoltaic device.

[0070] Fourth embodiment

[0071] Fig.12 A flow chart of the installation and fixing method of an embodiment of the present invention is shown. The installation and fixing method is used to install and fix the photovoltaic component 200 to the installation object, and includes the following steps: step S10, providing a holder 30; step S20, providing a frame of the photovoltaic component 200, the frame including a profile structure 20; step S30, passing the holder 30 through the first side wall 22 and the second side wall 24 of the profile structure 20; step S40, using the first fastener 50 to directly fasten the first end 32 of the holder 30 to the installation object; and step S50, using the second fastener 52 to fasten the second end 36 of the holder 30 to the installation wall 23 of the profile structure 20, and then fasten it to the installation object. Among them, step S40 can be performed before step S50, can be performed after step S50, and can also be performed simultaneously with step S50. Fig.12 The flowchart only shows the first case.

[0072] Those skilled in the art can understand that for the L-shaped tooling holder, in step S30, the holder 30 is moved along the direction from the first side wall 22 of the profile structure 20 to the second side wall 24 so that the holder 30 passes through the first side wall 22 and the second side wall 24 of the profile structure 20. For the C-type tooling socket, if the height of the first end portion 32 of the socket 30 is less than the height of the first through hole and the second through hole of the profile structure 20, then in step S30, the socket 30 can be moved along the direction from the first side wall 22 of the profile structure 20 to the second side wall 24, or along the direction from the second side wall 24 of the profile structure 20 to the first side wall 22 to pass through the first side wall 22 and the second side wall 24 of the profile structure 20; if the height of the first end portion 32 of the socket 30 is greater than the height of the first through hole and the second through hole of the profile structure 20, then in step S30, the socket 30 is moved along the direction from the first side wall 22 of the profile structure 20 to the second side wall 24 to pass through the first side wall 22 and the second side wall 24 of the profile structure 20.

[0073] The photovoltaic module installed by the installation and fixing method of the present invention increases the force-bearing area of ​​the frame of the photovoltaic module when it is loaded, reduces the stress value, and greatly reduces or minimizes the risk of tearing caused by insufficient lateral strength of the frame.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A holder for mounting and fixing a frame of a photovoltaic module, comprising: A first end portion, which is directly fastened to a mounting object; A second end portion, which is opposite to the first end portion and is fastened to a mounting wall of the profile structure of the frame and further fastened to the mounting object; as well as a middle portion, which is located between the first end portion and the second end portion and passes through a first side wall and a second side wall of the profile structure intersecting with the mounting wall, The card base has opposite third and fourth surfaces, and the first side wall and the second side wall of the profile structure have corresponding first and second through holes respectively. When the card base is installed and the frame is fixed, the middle part passes through the first and second through holes so that the third surface of the card base abuts against the first inner surface of the first through hole and the third inner surface of the second through hole, and there is a gap between the fourth surface of the card base and the second inner surface of the first through hole and the fourth inner surface of the second through hole, the first inner surface is opposite to the third inner surface, and the second inner surface is opposite to the fourth inner surface.

2. The card holder according to claim 1, characterized in that: The height of the first end portion is different from the height of the second end portion.

3. The card holder according to claim 1, characterized in that: A first gap is provided between an end surface of the first end portion of the holder facing the profile structure and a first side wall of the profile structure.

4. The card holder according to claim 1, characterized in that: An end surface of the first end portion of the holder facing the profile structure is in contact with the first side wall of the profile structure.

5. The card holder according to claim 1, characterized in that: The height of the middle portion is less than the height of the first end portion and less than the height of the second end portion.

6. The card holder according to claim 1, characterized in that: The first inner surface of the first through hole of the first side wall and the third inner surface of the second through hole of the second side wall are not coplanar with the surface of the installation wall away from the installation object and are spaced a certain distance therefrom.

7. The card holder according to claim 1, characterized in that: A second gap is provided between an end surface of the second end portion of the holder facing the profile structure and a second side wall of the profile structure.

8. The card holder according to claim 1, characterized in that: An end surface of the second end portion of the holder facing the profile structure is in contact with the second side wall of the profile structure.

9. A mounting and fixing structure, which is used to mount and fix a photovoltaic module to an installation object and comprises: The card holder according to any one of claims 1 to 8; as well as A frame, wherein the frame includes a profile structure and has a first side wall and a second side wall, the main body of the card seat passes through the first side wall and the second side wall so that the first end of the card seat is directly fastened to the installation object and the second end of the card seat is fastened to the profile structure and then to the installation object.

10. A photovoltaic device comprising: Photovoltaic panels; as well as The mounting and fixing structure according to claim 9; Wherein, the photovoltaic assembly is installed on the installation object through the installation and fixing structure.

11. A method for installing and fixing a photovoltaic module to an installation object, the method comprising the following steps: Providing a card holder according to any one of claims 1-8; Providing a frame of the photovoltaic module, wherein the frame comprises a profile structure; Pass the card holder through the first side wall and the second side wall of the profile structure; Using a first fastener to directly fasten the first end of the card holder to the installation object; as well as The second end of the holder is fastened to the mounting wall of the profile structure by a second fastener, and then fastened to the mounting object.

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