Composite material frame, corner fitting and assembly structure of photovoltaic module
Through the frame and corner structure made of composite materials, the problem of dust accumulation and easy cracking of four-corner glass under rainfall or dew is solved, and the performance and life of the component are improved.
Patent Information
- Application Number
- CN202421744678.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-07-22
AI Technical Summary
In the action of rainfall or dew, existing photovoltaic modules will block the gray water mixture at the border, causing dust to accumulate, damage the performance of the component, and the four-corner glass is prone to rupture.
The frame and corner piece structure made of composite materials, including long frames, short frames and corner pieces, are connected by corner keys and snap-on parts. The corner guard is designed to protect the four-corner glass, and the folded edge barrier and fixed plate structure prevents rainwater from immersing and dirt accumulation.
Effectively prevent dust from accumulating at the lower edge of the photovoltaic module, improve the power generation efficiency of the module, extend the life, and protect the four-corner glass from cracking with external forces.
Smart Images
Figure CN222996496U_ABST
Abstract
Description
Technical Field
[0001] The utility model mainly relates to an assembly structure of a composite material frame, corner fittings and a photovoltaic module.
Background Art
[0002] A solar photovoltaic module is formed by connecting a certain number of single solar cell wafers in series using interconnection bars, and then connecting several cell strings in series and parallel using busbars, and then encapsulating them with glass, glue film, frame, etc. into a solar panel, that is, a solar photovoltaic module. Photovoltaic modules are the core part of a solar photovoltaic system and are used to convert solar energy into electrical energy. They can directly convert sunlight into direct current through the photovoltaic effect. The design, materials and manufacturing process of photovoltaic modules have important impacts on their performance, efficiency and lifespan.
[0003] In a dry weather state, dust in the air settles on the surface of the photovoltaic module, forming a uniform layer of dust accumulation. When it rains or dews, it will move along the glass surface towards the low-lying areas driven by the water flow and raindrops. Since the currently mainstream frames of photovoltaic modules are 3 - 5 mm higher than the glass surface of the module, and due to the surface tension of water, part of the dust-water mixture will be blocked at the frame at the lowest concave part of the module. When the rain stops, the water will evaporate, leaving a large amount of dust to form a dust accumulation band, seriously blocking local cell wafers and causing the bypass diodes inside the module to conduct. At this time, the photovoltaic cell wafers change from power sources to resistive, consuming the electrical energy of other cell wafers and generating the hot spot effect, while significantly reducing the power generation efficiency of the module.
[0004] The front surface of a photovoltaic module is generally tempered or semi-tempered glass, and they have a strong ability to withstand impacts on the front surface. However, when they are impacted by external forces at the four corners, they are extremely easy to break. The existing frames of photovoltaic modules directly remove the A surface, so that the glass at the four corners of the photovoltaic module is directly exposed. When the four corners of the photovoltaic module are collided, the glass at the four corners will directly bear the force and cause the glass to break.
Content of the Utility Model
[0005] To solve at least one of the above problems, the utility model proposes a new structural solution. The assembly structure of a composite material frame, corner fittings and a photovoltaic module adopts the following technical solutions:
[0006] An assembly structure of a composite material frame, corner fittings and a photovoltaic module, which includes a photovoltaic module, corner fittings, short frames and long frames. The long frames, short frames and corner fittings are all of an integral structure;
[0007] The corner fittings include a corner key part, a buckle part and a corner protector. The corner key part is perpendicular to the buckle part. The corner protector has a first end face and a second end face. The first end face and the second end face are respectively located at both ends of the corner protector. The first end face is a plane, and the second end face is an inclined plane. The inclination of the second end face is 45 degrees;
[0008] The corner fitting is connected to the short frame and the long frame through the corner key part and the buckle part respectively, and the corner guard is located at the corner of the photovoltaic module to protect the corner of the photovoltaic module.
[0009] Preferably, the short frame has a glass support plate, a glue storage groove and a key groove are respectively arranged on both sides of the glass support plate, and a glue blocking plate is formed by folding the edge of the glue storage groove away from the glass support plate.
[0010] Preferably, the long frame has a bearing plate, a glass notch and a clamping groove are respectively arranged on both sides of the bearing plate, and a fixing plate is formed by folding the edge of the glass notch away from the bearing plate.
[0011] Preferably, the corner key part and the buckle part are respectively connected to the key groove and the clamping groove to connect the short frame and the long frame together.
[0012] Preferably, the corner guard is arranged on the corner key part, the corner guard extends outwards and is folded to form a baffle, and the folded part of the baffle is triangular.
[0013] Preferably, the length between the glass support plate and the glue blocking plate is less than the thickness of the photovoltaic module.
[0014] Preferably, the end of the long frame is in the shape of a triangular pyramid, and the inclination of the conical surface is 45 degrees; the end of the short frame is a plane, the short frame is connected to the first end face, and the long frame is connected to the second end face.
[0015] Preferably, the glue blocking plate is inclined relative to the bottom of the glue storage groove, and the fixing plate is perpendicular to the bottom of the glass notch.
[0016] The beneficial effects of the present utility model compared with the background technology:
[0017] The present utility model relates to an assembly structure of a composite material frame, a corner fitting and a photovoltaic module. By adopting this structure, dust accumulation at the lower edge of the photovoltaic module can be prevented, thereby preventing the photovoltaic module from causing hot spot effect due to dust blocking the battery cells, consuming electric energy, resulting in local heating, further reducing the service life of the module and possibly causing a fire, resulting in greater economic losses. It can also protect the glass of the four corners of the photovoltaic module from cracking when being impacted by external forces. It has the advantages of simple structure, compact cooperation and reasonable design; therefore, it is a product with excellent technical and economic performance.
Description of the Drawings
[0018] Figure 1 It is a schematic diagram of the connection between the short frame and the corner fitting in the preferred embodiment provided by the present utility model;
[0019] Figure 2 It is a schematic diagram of the long frame in the preferred embodiment provided by the present utility model;
[0020] Figure 3 It is a schematic diagram of the corner fitting in the preferred embodiment provided by the present utility model;
[0021] Figure 4 Schematic diagram of the connection between the short frame and the photovoltaic module in the preferred embodiment provided by the present utility model;
[0022] Figure 5 Cross-sectional view of the long frame in the preferred embodiment provided by the present utility model;
[0023] Figure 6 Cross-sectional view of the short frame in the preferred embodiment provided by the present utility model;
[0024] Figure 7 Schematic diagram of the connection between the long frame and the photovoltaic module in the preferred embodiment provided by the present utility model;
[0025] Figure 8 Assembly schematic diagram of the composite material frame, corner fittings and photovoltaic module in the preferred embodiment provided by the present utility model.
Detailed implementation manners
[0026] The embodiments of the present utility model will be described in detail below. The described embodiments are illustrated in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end.
[0027] In the present utility model, unless otherwise clearly specified and defined, terms such as "assembled", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection; it can be directly connected, or connected through an intermediate medium, and it can be the internal connection and communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0028] The following further describes the specific implementation manners of the present utility model in conjunction with the drawings of the specification, so that the technical solutions and their beneficial effects of the present utility model are clearer and more definite. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model.
[0029] The preferred embodiment provided by the present utility model: As Figures 1 to 8As shown in the figure, an assembly structure of a composite material frame, corner fittings and a photovoltaic module, which includes a photovoltaic module 1, corner fittings 2, short frames 3 and long frames 4. The corner fittings 2, long frames 4 and short frames 3 are all integral structures. The corner fittings 2 include a corner key part 21, a buckle part 22 and a corner guard 5. The corner key part 21 is perpendicular to the buckle part 22. The corner guard 5 is arranged on the corner key part 21. The corner guard 5 extends outward and folds up to form a baffle 51. The folded part of the baffle 51 is triangular. One side of the baffle 51 close to the short frame is in an open state, and the other side is a 45-degree bevel edge spliced with the long frame 4. This can prevent rainwater from infiltrating from the four corners of the photovoltaic module, ensure the smooth discharge of dirt at the four corners, and also prevent the glass at the four corners of the photovoltaic module from being broken by external impact.
[0030] The end of the long frame 4 is in the shape of a triangular pyramid, and the inclination of the conical surface is 45 degrees; the end of the short frame 3 is a plane; the corner guard 5 has a first end face 52 and a second end face 53. The first end face 52 and the second end face 53 are respectively located at both ends of the corner guard 5. The first end face 52 faces the corner key part 21, and the second end face 53 faces the buckle part 22. The first end face 52 is a plane, and the second end face 53 is an inclined plane. The inclination of the second end face 53 is 45 degrees for compact connection with the long frame 4; the short frame 3 is connected to the first end face 52, and the long frame 4 is connected to the second end face 53. After the short frame 3, the long frame 4 and the corner guard 5 are connected, the short frame 3 and the long frame 4 are perpendicular to each other.
[0031] The long frame 4 and the short frame 3 are respectively connected to adjacent sides of the photovoltaic module 1. The corner fittings 2 are respectively connected to the short frame 3 and the long frame 4 through the corner key part 21 and the buckle part 22, and the corner fittings 2 are located at the corner positions of the photovoltaic module 1 to protect the corner positions of the photovoltaic module 1.
[0032] The short frame 3 has a glass support plate 31. Glue storage grooves 32 and key grooves 33 are respectively arranged on both sides of the glass support plate 31. The edge of the glue storage groove 32 far from the glass support plate 31 folds up to form a glue baffle 34; the length W between the glass support plate 31 and the glue baffle 34 is less than the thickness of the photovoltaic module 1. After the short frame is installed, the width of W shall not be higher than the thickness of the photovoltaic module 1.
[0033] The long frame 4 has a bearing plate 41. Glass slots 42 and card slots 43 are respectively arranged on both sides of the bearing plate 41. The edge of the glass slot 42 far from the bearing plate 41 folds up to form a fixing plate 44. The corner key part 21 and the buckle part 22 are respectively connected to the key groove 33 and the card slot 43 to connect the short frame 3 and the long frame 4 together.
[0034] The end of the rubber baffle 34 and the fixing plate 44 is bent to form a hook portion 6, that is, the end of the rubber baffle 34 is bent to form the hook portion 6, and the end of the fixing plate 44 is bent to form the hook portion 6. The rubber baffle 34 is inclined relative to the bottom of the glue storage tank 32. The front surface of the photovoltaic module 1 is tempered glass or semi-tempered glass, and its four corners are easily broken when impacted by external forces. The corner piece 2 adopts a corner guard 5 design, which can not only ensure the smooth discharge of dirt at the four corners, but also protect the photovoltaic module 1. The fixing plate 44 is perpendicular to the bottom of the glass notch 42.
[0035] In this embodiment, the photovoltaic module 1 is rectangular, the number of long side frames 4 and short side frames 3 is 2, and the number of corner pieces 2 is 4. The long side frames 4 are connected to the length of the photovoltaic module 1, the short side frames 3 are connected to the width of the photovoltaic module 1, and the corner pieces 2 are respectively arranged at the four corner positions of the photovoltaic module 1. The adjacent long side frames 4 and short side frames 3 are connected and spliced together through the corner pieces 2. Further, the width of the photovoltaic module 1 is installed with a downward inclination, and the installation angle is greater than or equal to 15 degrees. The sealant 7 is injected into the glass notch 42, and the photovoltaic module 1 is inserted into the glass notch 42, so that the back surface of the photovoltaic module 1 abuts against the bearing plate 41 of the long side frame 4, and the front surface of the photovoltaic module 1 abuts against the fixing plate 44 of the long side frame 4. The fixing plate 44 can prevent the photovoltaic module 1 from falling in the direction of the fixing plate 44. The sealant 7 is injected into the glue storage tank 32, the photovoltaic module 1 is inserted into the glue storage tank 32, the back surface of the photovoltaic module 1 abuts against the glass support plate 31 of the short side frame 3, and the short side surface of the photovoltaic module 1 is supported on the rubber baffle 34. The rubber baffle 34 can prevent the sealant from overflowing onto the surface of the photovoltaic module 1 and avoid the sealant from contaminating the photovoltaic module 1 and the short side frame 3. The adjacent long side frames 4 and short side frames 3 are connected through the corner pieces 2. The photovoltaic module 1 is surrounded and protected by the long side frames 4, short side frames 3 and corner pieces 2 arranged around it, and the front glass four corners of the photovoltaic module 1 can be protected by using the corner guard 5 to avoid damage. The long side frames 4, short side frames 3 and corner pieces 2 adopt existing composite materials, which can ensure the mechanical load performance of the components and avoid the components from being too heavy.
[0036] The present utility model provides an assembly structure 1 of a composite material frame, corner fittings and a photovoltaic module, which comprises a photovoltaic module 1, a long frame 4, a short frame 3 and corner fittings 2. Through the mutual cooperation and connection among the photovoltaic module 1, the long frame 4, the short frame 3 and the corner fittings 2, the photovoltaic module 1 is surrounded and protected to avoid damage to the four corners of the glass of the photovoltaic module 1. Since the length W between the glass support plate 31 and the rubber baffle 34 is less than the thickness of the photovoltaic module 1, the dirt on the surface of the photovoltaic module 1 can be smoothly discharged under the washing of rainwater; a corner guard 5 is inserted through the corner key part 21, and the edge of the corner guard 5 is folded up to form a baffle 51. The baffle 51 is triangular, and one side of the baffle 51 close to the short frame 3 is in an open state, and the other side is a 45-degree bevel edge spliced with the long frame 4. In this way, rainwater can be prevented from infiltrating from the four corners of the photovoltaic module 1, the dirt at the four corners can be ensured to be smoothly discharged, and the four-corner glass of the photovoltaic module can be prevented from being broken by external impact.
[0037] In the description of the specification, the description with reference to terms such as "one embodiment", "preferably", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. The schematic representations of the above terms in this specification do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.
[0038] Through the description of the above structures and principles, those skilled in the art should understand that the present utility model is not limited to the above specific embodiments, and the improvements and substitutions using the well-known technologies in the art on the basis of the present utility model all fall within the protection scope of the present utility model, which should be defined by each claim.
Claims
1. An assembly structure of a composite material frame, corner piece and photovoltaic module, characterized in that: It includes photovoltaic modules, corner pieces, short frames and long frames, and the long frames, short frames and corner pieces are all integrated structures; The corner piece includes a corner key portion, a buckle portion and a corner protector, the corner key portion is perpendicular to the buckle portion, the corner protector has a first end face and a second end face, the first end face and the second end face are respectively located at two ends of the corner protector, the first end face is a plane, the second end face is an inclined face, and the inclination of the second end face is 45 degrees; The corner pieces are respectively connected to the short frame and the long frame through the corner key portion and the buckle portion, and the corner guards are located at the corners of the photovoltaic module to protect the corners of the photovoltaic module.
2. The assembly structure of a composite material frame, corner piece and photovoltaic module according to claim 1, characterized in that: The short frame has a glass support plate, and two sides of the glass support plate are respectively provided with a glue storage groove and a key groove, and the edge of the glue storage groove away from the glass support plate is folded up to form a glue baffle plate.
3. The assembly structure of a composite material frame, corner piece and photovoltaic module according to claim 2, characterized in that: The long frame has a bearing plate, and glass notches and clamping grooves are respectively arranged on two sides of the bearing plate. The glass notches are folded away from the edges of the bearing plate to form a fixing plate.
4. The assembly structure of a composite material frame, corner piece and photovoltaic module according to claim 3, characterized in that: The corner key portion and the buckle portion are respectively connected to the key slot and the buckle slot to connect the short frame and the long frame together.
5. The assembly structure of a composite material frame, corner piece and photovoltaic module according to claim 1, characterized in that: The corner guard is arranged at the corner key portion, and the corner guard extends outward and is folded to form a retaining edge, and the folded portion of the retaining edge is triangular.
6. The composite material frame, corner piece and photovoltaic module assembly structure according to claim 2, characterized in that: The length between the glass support plate and the glue baffle plate is less than the thickness of the photovoltaic module.
7. The composite material frame, corner piece and photovoltaic module assembly structure according to claim 5, characterized in that: The end of the long frame is in a triangular cone shape, and the inclination of the cone surface is 45 degrees; the end of the short frame is a plane, the short frame is connected to the first end surface, and the long frame is connected to the second end surface.
8. The composite material frame, corner piece and photovoltaic module assembly structure according to claim 3, characterized in that: The glue baffle plate is inclined relative to the bottom of the glue storage tank, and the fixing plate is vertical relative to the bottom of the glass notch.