Photovoltaic module and photovoltaic system

Abstract

The utility model relates to the field of photovoltaic technology, and discloses a photovoltaic assembly and a photovoltaic system. The apparatus includes a laminate and a support plate. The supporting plates are arranged at the bottom of the laminated piece and comprise plate bodies and first lap joint parts, the first lap joint parts are arranged at the two opposite ends of each plate body, one first lap joint part is provided with a pit, the first lap joint part of one supporting plate is in lap joint with the first lap joint part with the pit of the adjacent supporting plate, and the second lap joint part is in lap joint with the first lap joint part with the pit of the adjacent supporting plate. And an anti-capillary cavity is formed at the sunken part. According to the photovoltaic module, the recesses are formed in the first lap joint part to form the anti-capillary cavities, so that the waterproof performance of the photovoltaic module is effectively improved, and the photovoltaic module is simple in structure and low in manufacturing cost.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic technology, specifically to a photovoltaic module and a photovoltaic system. Background Technology

[0002] A photovoltaic (PV) module is a device that converts solar energy into electrical energy. It is typically composed of multiple individual cells connected in series or parallel and tightly sealed. PV modules are the core component of a solar power generation system; their function is to convert solar energy into electrical energy to power loads or store it in batteries.

[0003] When existing photovoltaic modules are used in scenarios with low waterproofing requirements, they are usually integrated into a single solution, which integrates the photovoltaic module with a steel plate. Waterproofing is achieved through the overlapping and layering of the steel plates. However, when the rain is too heavy, the waterproofing performance of the integrated photovoltaic module is not high enough. The gaps between the steel plates are prone to capillary effect, and rainwater can flow into the house through the gaps between the steel plates. As a result, integrated photovoltaic modules cannot be used in scenarios with higher waterproofing requirements. Utility Model Content

[0004] In view of this, the present invention provides a photovoltaic module and a photovoltaic system to solve the problem of poor waterproof performance of photovoltaic modules.

[0005] In a first aspect, this utility model provides a photovoltaic module, comprising:

[0006] Laminated components;

[0007] A support plate is disposed at the bottom of the laminate. The support plate includes a plate body and a first overlapping portion. The plate body has a pair of opposite ends with the first overlapping portion. One of the first overlapping portions has a recess. The first overlapping portion of the support plate overlaps the first overlapping portion of the adjacent support plate with the recess, and an anti-capillary cavity is formed in the recess.

[0008] Beneficial Effects: Photovoltaic modules include laminates and support plates. The support plates support the laminates at the installation location, and the laminates convert solar energy into electrical energy. The support plates have first overlapping portions at both ends in a first direction, allowing adjacent first overlapping portions to interlock, simplifying the connection. Recesses are provided in the first overlapping portions, creating an anti-capillary cavity between the two overlapping portions. This anti-capillary cavity increases the distance between the two first overlapping portions, effectively preventing capillary action and thus preventing liquid from entering the building along the two first overlapping portions. This photovoltaic module, by creating an anti-capillary cavity in the first overlapping portion, effectively improves the waterproof performance of the photovoltaic module, and its simple structure and low manufacturing cost further enhance its effectiveness.

[0009] In one optional embodiment, the first overlapping portion includes a first segment, a second segment, and a third segment. One end of the first segment is connected to the plate body, and the other end of the first segment is connected to the third segment via the second segment. The first segment, the second segment, and the third segment form a trapezoid.

[0010] Beneficial effects: By setting the first, second and third sections, the first overlap part is made into a trapezoid. The trapezoidal setting can effectively strengthen the structural strength of the first overlap part, avoid deformation of the first overlap part during transportation or use, and ensure the stability of the overlap between photovoltaic modules.

[0011] In one alternative implementation, the recess is provided in the first segment.

[0012] Beneficial effects: When the two first overlapping parts are completed, liquid will accumulate between the first overlapping part and the plate. The gap formed between the first segment with the recess and the third segment overlapping the first segment will be connected to the external environment. Therefore, the water will first produce capillary action in the gap formed between the first segment with the recess and the third segment overlapping the first segment. Therefore, by setting a recess in the first segment, capillary action can be effectively prevented through the anti-capillary cavity.

[0013] In one alternative embodiment, the third segment is bent toward the side closer to the plate to form a fourth segment, and the fourth segment and the recess are disposed in the same first overlap portion.

[0014] Beneficial effects: By bending the third section towards the side closer to the panel to form the fourth section, the structural strength of the first overlapping part can be effectively increased. At the same time, the fourth section can increase the contact area with the purlin, so that the photovoltaic module can be more firmly attached to the purlin.

[0015] In one alternative embodiment, the fourth segment is arranged parallel to the plate body.

[0016] Beneficial effect: It enables the fourth section to better support the weight of the laminate.

[0017] In one alternative embodiment, the support plate further includes a second overlapping portion, and the other two opposite ends of the plate are provided with the second overlapping portion, and the second overlapping portions of adjacent support plates overlap each other.

[0018] Beneficial effects: The second overlapping part overlaps, connecting adjacent support plates and providing a certain degree of waterproofing.

[0019] In one alternative embodiment, the end of the second overlapping portion away from the plate body is folded toward the side closer to the plate body to form a flange.

[0020] Beneficial effect: By setting the flange, the structural strength of the end of the second overlap that is away from the board can be effectively increased, and deformation can be avoided.

[0021] In one alternative embodiment, the second overlapping portion located upstream of the support plate mounting position is folded upward to form the flange, and the second overlapping portion located downstream of the support plate mounting position is folded downward to form the flange.

[0022] Beneficial effects: By forming flanges at different positions through two second overlapping parts, anti-capillary cavities can also be formed between the two flanges after the overlap, further increasing the waterproof performance of the photovoltaic module.

[0023] Secondly, this utility model also provides a photovoltaic system, including the aforementioned photovoltaic module, wherein the side of the support plate away from the laminate abuts against the purlin.

[0024] Beneficial effects: The photovoltaic system improves the waterproof performance of the photovoltaic system through this photovoltaic module, enabling the photovoltaic system to be used in scenarios with high waterproof performance requirements, thus improving the applicability of the photovoltaic system.

[0025] In one alternative embodiment, the device further includes a waterproof gasket, a first waterproof component, and a fastener, wherein the waterproof gasket and the first waterproof component are sequentially disposed on two overlapping first overlap portions and connected by the fastener.

[0026] Beneficial effects: The waterproof gasket and the first waterproof component improve the strength of the fastener connection between the two first overlaps, while reducing the possibility of liquid seeping in from the gap between the fastener and the first overlap. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a top view of a photovoltaic module according to an embodiment of the present utility model;

[0029] Figure 2 This is a front view of a photovoltaic module according to an embodiment of the present utility model;

[0030] Figure 3 This is a side view of a photovoltaic module according to an embodiment of the present utility model;

[0031] Figure 4 This is a schematic diagram of the first overlapping parts overlapping each other according to an embodiment of the present utility model;

[0032] Figure 5 This is a schematic diagram of the overlapping of the second overlapping parts according to an embodiment of the present utility model;

[0033] Figure 6 This is a schematic diagram of a photovoltaic system according to an embodiment of the present utility model;

[0034] Figure 7 for Figure 6 Enlarged view of point A in the middle.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100. Purlins;

[0037] 1. Laminated components;

[0038] 2. Support plate; 21. Plate body; 211. Through hole; 22. First overlapping part; 221. First section; 2211. Recess; 222. Second section; 223. Third section; 224. Fourth section; 23. Second overlapping part; 231. Flanged edge;

[0039] 3. Waterproof gasket;

[0040] 4. First waterproof component;

[0041] 5. Fasteners;

[0042] 6. Second waterproof component;

[0043] 7. Waterproof adhesive. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0045] Capillary action occurs due to the combined effects of cohesive forces between liquid molecules and adhesive forces between the liquid and the solid. Specifically, the cohesive forces between liquid molecules cause a thin film to form on the liquid surface, while the adhesive forces between the liquid and the solid cause the liquid to rise or fall within the narrow tube. When the adhesive force is greater than the cohesive force, the liquid rises within the narrow tube; conversely, the liquid falls within the narrow tube.

[0046] The following is combined with Figures 1 to 7This describes embodiments of the photovoltaic module and photovoltaic system of this utility model.

[0047] According to an embodiment of the present invention, a photovoltaic module is provided, including a laminate 1 and a support plate 2. The support plate 2 is disposed at the bottom of the laminate 1. The support plate 2 includes a plate body 21 and a first overlapping portion 22. Each of the two opposite ends of the plate body 21 is provided with a first overlapping portion 22. One of the first overlapping portions 22 is provided with a recess 2211. The first overlapping portion 22 of one support plate 2 overlaps on the first overlapping portion 22 of the adjacent support plate 2 with the recess 2211, and an anti-capillary cavity is formed at the recess 2211.

[0048] The photovoltaic module provided in this embodiment includes a laminate 1 and a support plate 2. The support plate 2 supports the laminate 1 at the location where it needs to be laid, and the laminate 1 converts solar energy into electrical energy. The support plate 2 has first overlapping portions 22 at both ends in a first direction, allowing adjacent first overlapping portions 22 of the support plate 2 to overlap each other, simplifying the connection method. A recess 2211 is provided on the first overlapping portion 22, forming an anti-capillary cavity between the two overlapping portions 22. This anti-capillary cavity increases the distance between the two first overlapping portions 22, effectively preventing capillary action and thus preventing liquid from entering the building along the two first overlapping portions 22. This photovoltaic module, by forming an anti-capillary cavity with a recess 2211 on the first overlapping portion 22, effectively improves the waterproof performance of the photovoltaic module, and has a simple structure and low manufacturing cost.

[0049] It should be noted that the laminate 1 is a relatively conventional technology in this field, and any laminate 1 that can realize energy conversion is acceptable. The specific structure of the laminate 1 will not be described here.

[0050] In one embodiment, the board 21 is rectangular and has a regular shape, which facilitates laying and transportation. The first overlapping part 22 is provided on the two long sides of the board 21 and is provided along the long side of the board 21 to enhance the overlapping effect and ensure its firmness after overlapping.

[0051] In one embodiment, the recess 2211 is located on the right side of the plate 21. In other embodiments, it may also be located on the left side of the plate 21. The specific location should depend on the construction conditions and requirements.

[0052] In one embodiment, the plate 21 is made of steel plate. The steel plate has high structural strength, which can provide good support for the laminate 1 and also support the construction personnel to carry out the construction, avoiding the need to build additional support frames. In addition, the steel plate is lightweight, which can reduce the weight of the photovoltaic module and reduce the difficulty of installation.

[0053] In one embodiment, the first overlapping portion 22 includes a first segment 221, a second segment 222, and a third segment 223. One end of the first segment 221 is connected to the plate 21, and the other end of the first segment 221 is connected to the third segment 223 via the second segment 222. The first segment 221, the second segment 222, and the third segment 223 form a trapezoid. By setting the first segment 221, the second segment 222, and the third segment 223 to form a trapezoid, the trapezoidal shape can effectively strengthen the structural strength of the first overlapping portion 22, prevent deformation of the first overlapping portion 22 during transportation or use, and ensure the stability of the overlap between photovoltaic modules.

[0054] In one or more embodiments, the first overlapping portion 22 may also be a shape suitable for overlapping, such as a triangle or a semi-circle.

[0055] In one embodiment, the first segment 221 is folded upwards, the second segment 222 is parallel to the plate 21, and the third segment 223 is folded downwards to form a trapezoid.

[0056] In one embodiment, such as Figure 4 As shown, a recess 2211 is provided in the first segment 221. When the two first overlapping portions 22 are completed, liquid will accumulate between the first overlapping portion 22 and the plate 21. The gap formed between the first segment 221 with the recess 2211 and the third segment 223 overlapping the first segment 221 will be connected to the external environment. Therefore, the water will first generate capillary action in the gap formed between the first segment 221 with the recess 2211 and the third segment 223 overlapping the first segment 221. Therefore, by providing a recess 2211 in the first segment 221, capillary action can be effectively prevented through the anti-capillary cavity.

[0057] In one embodiment, the third segment 223 is bent toward the side closer to the plate 21 to form a fourth segment 224, and the fourth segment 224 and the recess 2211 are disposed in the same first overlap portion 22. By bending the third segment 223 toward the side closer to the plate 21 to form the fourth segment 224, the structural strength of the end of the first overlap portion 22 can be effectively increased. At the same time, the fourth segment 224 can increase the contact area with the purlin 100, so that the photovoltaic module can be more firmly overlapped on the purlin 100.

[0058] In one embodiment, the fourth segment 224 is arranged parallel to the plate 21. This allows the fourth segment 224 to better support the weight of the laminate 1.

[0059] In one embodiment, the support plate 2 further includes a second overlapping portion 23. The other pair of opposite ends of the plate body 21 are also provided with second overlapping portions 23, and the second overlapping portions 23 of adjacent support plates 2 overlap each other. The overlapping of the second overlapping portions 23 connects adjacent support plates 2 and provides a certain degree of waterproofing.

[0060] In one embodiment, the end of the second overlapping portion 23 away from the plate 21 is folded towards the side closer to the plate 21 to form a flange 231. By providing the flange 231, the structural strength of the end of the second overlapping portion 23 away from the plate 21 can be effectively increased, preventing it from deforming.

[0061] In one embodiment, the second overlapping portion 23 located upstream of the mounting position of the support plate 2 is folded upward to form a flange 231, and the second overlapping portion 23 located downstream of the mounting position of the support plate 2 is folded downward to form a flange 231. By forming flanges 231 at different positions with the two second overlapping portions 23 respectively, an anti-capillary cavity can also be formed between the two flanges 231 after overlapping, further increasing the waterproof performance of the photovoltaic module.

[0062] In one embodiment, the first overlapping part 22, the second overlapping part 23 and the plate 21 are all integrally formed from steel plates, resulting in high structural strength and low manufacturing difficulty.

[0063] In one embodiment, the steel plate has several through holes 211 in the middle for installing components such as junction boxes of the laminate 1.

[0064] According to an embodiment of the present invention, another aspect provides a photovoltaic system including the aforementioned photovoltaic module, wherein the side of the support plate 2 away from the laminate 1 abuts against the purlin 100.

[0065] The photovoltaic system provided in this embodiment improves the waterproof performance of the photovoltaic system through the photovoltaic module, enabling the photovoltaic system to be applied to scenarios with high waterproof performance requirements, thereby improving the applicability of the photovoltaic system.

[0066] In one embodiment, the photovoltaic system further includes a waterproof gasket 3, a first waterproof component 4, and a fastener 5. The waterproof gasket 3 and the first waterproof component 4 are sequentially disposed on two overlapping first overlap portions 22 and connected by the fastener 5. The waterproof gasket 3 and the first waterproof component 4 improve the firmness of the connection between the two first overlap portions 22 by the fastener 5, while reducing the possibility of liquid seeping in from the gap between the fastener 5 and the first overlap portions 22.

[0067] In one embodiment, fastener 5 is inserted through both second parts.

[0068] In one embodiment, the waterproof gasket 3 is adapted to the shape of the first overlap 22, and the waterproof gasket 3 is also trapezoidal.

[0069] In one embodiment, the first waterproof component 4 is a U-shaped steel washer, and the fastener 5 is a self-tapping screw.

[0070] In one embodiment, the photovoltaic module further includes a second waterproof component 6, which is disposed between the end of the fastener 5 and the waterproof gasket 3 to further improve the waterproof effect. The second waterproof component 6 is a waterproof gasket.

[0071] In one embodiment, the photovoltaic module further includes a waterproof adhesive 7, which is disposed on the head of the fastener 5 and can seal the gaps between the fastener 5, the second waterproof component 6, and the waterproof gasket 3, further improving the waterproof effect at the first overlap 22. The waterproof adhesive 7 is a weather-resistant adhesive with excellent weather aging resistance, superior high and low temperature resistance, excellent adhesion, and good compatibility with other neutral silicone sealants.

[0072] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A photovoltaic module, characterized in that, include: Laminated component (1); A support plate (2) is disposed at the bottom of the laminate (1). The support plate (2) includes a plate body (21) and a first overlapping portion (22). The plate body (21) has a pair of opposite ends provided with the first overlapping portion (22). One of the first overlapping portions (22) is provided with a recess (2211). The first overlapping portion (22) of the support plate (2) overlaps on the first overlapping portion (22) of the adjacent support plate (2) with the recess (2211) and forms an anti-capillary cavity at the recess (2211).

2. The photovoltaic module according to claim 1, characterized in that, The first overlapping part (22) includes a first segment (221), a second segment (222) and a third segment (223). One end of the first segment (221) is connected to the plate (21), and the other end of the first segment (221) is connected to the third segment (223) through the second segment (222). The first segment (221), the second segment (222) and the third segment (223) form a trapezoid.

3. The photovoltaic module according to claim 2, characterized in that, The recess (2211) is provided in the first segment (221).

4. The photovoltaic module according to claim 2, characterized in that, The third segment (223) is bent toward the side closer to the plate (21) to form a fourth segment (224), and the fourth segment (224) and the recess (2211) are disposed in the same first overlap (22).

5. The photovoltaic module according to claim 4, characterized in that, The fourth segment (224) is arranged parallel to the plate (21).

6. The photovoltaic module according to claim 1, characterized in that, The support plate (2) also includes a second overlapping portion (23). The other two opposite ends of the plate body (21) are provided with the second overlapping portion (23), and the second overlapping portions (23) of adjacent support plates (2) overlap each other.

7. The photovoltaic module according to claim 6, characterized in that, The second overlapping part (23) is folded away from the plate (21) at one end toward the side closer to the plate (21) to form a flange (231).

8. The photovoltaic module according to claim 7, characterized in that, The second overlapping part (23) located upstream of the installation position of the support plate (2) is folded upward to form the flange (231), and the second overlapping part (23) located downstream of the installation position of the support plate (2) is folded downward to form the flange (231).

9. A photovoltaic system comprising the photovoltaic module according to any one of claims 1-8, characterized in that, The side of the support plate (2) away from the laminate (1) abuts against the purlin (100).

10. The photovoltaic system according to claim 9, characterized in that, It also includes a waterproof gasket (3), a first waterproof component (4) and a fastener (5), wherein the waterproof gasket (3) and the first waterproof component (4) are sequentially disposed on two overlapping first overlap portions (22) and connected by the fastener (5).

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