Low-water-permeability packaging assembly
By adopting low-water permeability packaging components in photovoltaic modules, using butyl glue and barrier convex grooves combined with low-water permeability sealing ring design, the problem of water vapor intrusion in the frame packaging of photovoltaic modules is solved, achieving better sealing effect and use Extended lifespan.
Patent Information
- Application Number
- CN202420694765.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-07
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-04-07
AI Technical Summary
When existing photovoltaic modules are packaged in frames, the high permeability of silicone leads to invasion of water vapor, affecting power generation and service life. The butyl rubber packaging method has poor packaging and water vapor passage problems, which cannot effectively prevent water vapor from entering.
Low-water permeability packaging components are adopted, including upper glass, first photovoltaic film, cell, second photovoltaic film and back plate. A half-frame packaging rack and low-water permeability sealing ring are provided on the outside, through butyl glue and barrier The combination of convex grooves achieves a sealing effect, and further utilizes a low-water translucent sealing ring to prevent water vapor from entering.
Effectively prevent water vapor from entering the inside of the photovoltaic module, extend the service life of the photovoltaic module, and improve packaging effect and sealing performance.
Smart Images
Figure CN222261086U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of photovoltaics, in particular to a low water permeability packaging component. Background Art
[0002] Solar cells are devices that directly convert light energy into electrical energy through the photoelectric effect or photochemical effect. As long as they are exposed to light, they can instantly output voltage and current. This is called solar photovoltaic in physics, or PV for short. As the photovoltaic industry's power generation components show diversified development, the overall trend is to pursue high power and high reliability. In the prior art, when photovoltaic components are packaged in frames, silicone is basically used for sealing. However, silicone has relatively high water permeability. In areas with high humidity, water vapor can easily invade the interior of the component, which can easily lead to risks such as film hydrolysis, oxidation of charged bodies, and reduced insulation performance, which seriously affects the power generation and service life of the component.
[0003] Butyl rubber is also used for frame packaging, and the low water permeability of butyl rubber is used to solve the above-mentioned water vapor intrusion problem. However, its packaging method is often to encapsulate butyl rubber to the inner edge of the component through lamination. Due to the edge stress, it is easy to cause poor packaging and water vapor channels, and it still cannot guarantee that water vapor will not intrude.
[0004] Therefore, it is necessary to study a low water permeability packaging component to address the deficiencies in the prior art and solve the above-mentioned problems. Utility Model Content
[0005] The utility model aims to provide a low water permeability packaging component, which can achieve a better packaging effect on photovoltaic components, prevent water vapor from entering the interior of the photovoltaic components, and extend the service life of the photovoltaic components.
[0006] To achieve the above-mentioned purpose, the utility model provides a low water-permeability packaging component, including a basic component, wherein the basic component includes an upper glass, a first photovoltaic film, a battery cell, a second photovoltaic film and a back panel arranged in sequence from top to bottom, a first packaging structure is provided on the outside of the basic component, and a second packaging structure is provided on the outside of the first packaging structure.
[0007] Preferably, the second packaging structure is placed inside the frame, and butyl rubber is filled between the frame and the second packaging structure.
[0008] Preferably, the first packaging structure comprises a semi-frame packaging frame, and the semi-frame packaging frame is bonded to the side of the basic component by butyl adhesive.
[0009] Preferably, grooves are provided at the top and the bottom of the semi-frame-shaped packaging frame in contact with the basic component.
[0010] Preferably, both the upper glass and the back plate are provided with blocking protrusions, and the number of the blocking protrusions on the same plane is two.
[0011] Preferably, the barrier protrusion matches the groove, and when the semi-frame-shaped packaging frame is bonded to the side surface of the basic component, the barrier protrusion corresponds to the groove.
[0012] Preferably, the second sealing structure comprises a low water permeability sealing ring, and the low water permeability sealing ring is sleeved on the outer side of the semi-frame packaging frame.
[0013] Therefore, the utility model adopts the above-mentioned low water permeability packaging component, which can achieve a good sealing effect through the cooperation between the groove in the first packaging structure and the barrier convexity on the upper glass and the back panel. The low water permeability sealing ring in the second packaging structure can further achieve a water-blocking sealing effect, which can achieve a good packaging effect for the entire photovoltaic component, prevent water vapor from entering the interior of the photovoltaic component, and extend the service life of the photovoltaic component.
[0014] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a structural schematic diagram of an embodiment of a low water permeability packaging component of the utility model;
[0016] Figure 2 The utility model is a low water permeability packaging component Figure 1 Enlarged view of point A in the middle.
[0017] Reference numerals
[0018] 1. Upper glass; 2. First photovoltaic film; 3. Solar cell; 4. Second photovoltaic film; 5. Back panel; 6. Semi-frame packaging frame; 7. Frame; 8. Groove; 9. Barrier convex; 10. Low water permeability sealing ring. DETAILED DESCRIPTION
[0019] The technical solution of the utility model is further described below through the accompanying drawings and embodiments.
[0020] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0021] Embodiment 1
[0022] like Figure 1-2 As shown, the utility model provides a low water-permeability packaging component, including a basic component, wherein the basic component includes an upper glass 1, a first photovoltaic film 2, a battery cell 3, a second photovoltaic film 4 and a back panel 5 arranged in sequence from top to bottom, the upper glass 1 is a high-light-transmittance glass, and the first photovoltaic film 2 and the second photovoltaic film 4 can protect the battery cell 3 on the one hand, and on the other hand, allow the battery cell 3 to receive sunlight to the maximum extent, thereby improving the power generation efficiency of the photovoltaic component.
[0023] The first packaging structure is provided on the outside of the basic component, and the first packaging structure includes a semi-frame packaging frame 6, which is bonded to the side of the basic component by butyl adhesive. There are two semi-frame packaging frames 6, which are respectively arranged on both sides of the basic component to achieve a preliminary water-blocking and sealing effect.
[0024] The top and bottom of the semi-frame packaging frame 6 in contact with the basic assembly are both provided with grooves 8. The upper glass 1 and the back plate 5 in the basic assembly are both provided with blocking protrusions 9, and the number of blocking protrusions 9 on the same plane is two, that is, the surface of the upper glass 1 and the back plate 5 are both provided with two blocking protrusions 9, and the blocking protrusions 9 are arranged at the edge positions on both sides of the surface of the upper glass 1 and the back plate 5, and do not affect the normal lighting of the upper glass 1.
[0025] The barrier convex 9 matches the groove 8. When the semi-frame packaging frame 6 is bonded to the side of the base component, the barrier convex 9 corresponds to the groove 8. At this time, butyl glue can be applied to the surface of the barrier convex 9, and then the barrier convex 9 and the groove 8 are closely fitted, thereby achieving a further water-blocking and sealing effect.
[0026] A second packaging structure is provided outside the first packaging structure, and the second sealing structure includes a low water permeability sealing ring 10, which is sleeved on the outside of the semi-frame packaging frame 6. The low water permeability sealing ring 10 can form a sealing structure at the joint of the semi-frame packaging frame 6 and the basic component, thereby preventing water vapor from entering the interior of the component from the joint, thereby achieving a better sealing effect. The second packaging structure is placed inside the frame 7, and butyl rubber is filled between the frame 7 and the second packaging structure, thereby achieving the fixation of the packaging component.
[0027] The working principle of the utility model is as follows: the first packaging structure is bonded to the outside of the photovoltaic module by butyl adhesive, and a good sealing effect can be achieved through the cooperation between the barrier protrusions 9 on the upper glass 1 and the back plate 5 and the grooves 8 in the first packaging structure, and a water-blocking sealing effect can be further achieved through the low water-permeable sealing ring 10 in the second packaging structure.
[0028] Therefore, the utility model adopts the above-mentioned low water permeability packaging component, which can achieve a better packaging effect on the photovoltaic component, prevent water vapor from entering the interior of the photovoltaic component, and extend the service life of the photovoltaic component.
[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that they can still modify or replace the technical solution of the utility model with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the utility model.
Claims
1. A low water permeability packaging component, characterized in that: It includes a basic component, which includes an upper glass layer, a first photovoltaic film, a battery cell, a second photovoltaic film and a back plate arranged in sequence from top to bottom, a first packaging structure is arranged on the outer side of the basic component, and a second packaging structure is arranged on the outer side of the first packaging structure.
2. The low water permeability packaging assembly according to claim 1, characterized in that: The second packaging structure is placed inside the frame, and butyl rubber is filled between the frame and the second packaging structure.
3. The low water permeability packaging assembly according to claim 1, characterized in that: The first packaging structure includes a semi-frame packaging frame, and the semi-frame packaging frame is bonded to the side of the basic component by butyl adhesive.
4. The low water permeability packaging assembly according to claim 3, characterized in that: The top and bottom of the semi-frame-shaped packaging frame in contact with the basic component are both provided with grooves.
5. The low water permeability packaging assembly according to claim 4, characterized in that: The upper glass and the back plate are both provided with barrier protrusions, and the number of the barrier protrusions on the same plane is two.
6. The low water permeability packaging assembly according to claim 5, characterized in that: The blocking protrusion matches the groove, and when the semi-frame-shaped packaging frame is bonded to the side surface of the basic component, the blocking protrusion corresponds to the groove.
7. The low water permeability packaging assembly according to claim 6, characterized in that: The second packaging structure comprises a low water permeability sealing ring, and the low water permeability sealing ring is sleeved on the outer side of the semi-frame packaging frame.