Encapsulating housing and photovoltaic module
By forming a sealed encapsulation space within the photovoltaic module's encapsulation housing, and utilizing fusion bonding, glass encapsulation housing, and film lamination technology, the problem of water vapor permeation caused by the aging of the photovoltaic module's waterproof sealant strips has been solved, achieving higher reliability and service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGSHU CANADIAN SOLAR ELECTRIC POWER TECHCO
- Filing Date
- 2025-03-25
- Publication Date
- 2026-06-05
AI Technical Summary
Existing photovoltaic modules are at risk of water vapor leakage due to aging of the waterproof sealant strips during use, which affects the water resistance and service life of the modules.
A sealed encapsulation space is formed within the encapsulation housing. The encapsulation space is formed by fusion bonding of the front panel, back panel, and sides, and the battery cells are placed in it. The high light transmittance and airtightness of the glass material are used to block moisture, and combined with the film lamination technology, the protection and sealing of the battery cells are ensured.
Completely prevents moisture intrusion, improves the reliability and lifespan of photovoltaic modules, enhances cell protection, and extends module lifespan.
Smart Images
Figure CN224329843U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of photovoltaic technology, and in particular to a packaging shell and a photovoltaic module. Background Technology
[0002] Photovoltaic modules are the core and most important component of a solar power system, converting solar energy into electrical energy. To ensure the water resistance of photovoltaic modules, waterproof strips are installed at the sealant gaps. However, as these waterproof strips age, photovoltaic modules still face the risk of moisture penetration during use.
[0003] In view of this, it is necessary to provide a photovoltaic module to solve the above-mentioned technical problems. Utility Model Content
[0004] To achieve the above objectives, this utility model provides an encapsulation housing, including a front plate, a back plate, and a side plate; wherein the side of the front plate and / or the back plate is fused to the side plate, and the front plate, the back plate, and the side plate enclose an encapsulation space.
[0005] As a further improvement of this utility model, the front plate and the side plate are integrally formed, and the side of the back plate is fused to the side plate.
[0006] Alternatively, the back plate and the side plate are integrally formed, and the side of the front plate is fused to the side plate.
[0007] As a further improvement of this utility model, the front plate, the back plate, and the side plate are separately disposed, and the sides of the front plate and the back plate are fused to the side plate.
[0008] This utility model also provides another type of packaging shell, wherein a packaging space is formed inside the packaging shell, the packaging space is formed by a front plate portion, a back plate portion, a side portion and a welding portion, and the side of the front plate portion is connected to the side portion and / or the side of the back plate portion is connected to the side portion through the welding portion.
[0009] As a further improvement of this utility model, the front plate portion and the side portion are integrally formed, and the welding portion only includes a second welding portion connecting the back plate portion and the side portion;
[0010] Alternatively, the back panel and the side panel are integrally formed, and the welded portion includes only a first welded portion connecting the front panel and the side panel.
[0011] As a further improvement of this utility model, the welding part includes a first welding part connecting the front plate part and the side part, and a second welding part connecting the back plate part and the side part.
[0012] This utility model also provides a photovoltaic module, including a plurality of solar cells and the aforementioned encapsulation housing, wherein the solar cells are located within the encapsulation space.
[0013] As a further improvement of this utility model, it also includes an adhesive film located inside the packaging housing, the adhesive film including a first adhesive film layer located between the battery cell and the front panel portion and / or a second adhesive film layer located between the battery cell and the back panel portion.
[0014] As a further improvement of this utility model, there is a gap between the battery cell and the side portion, and the width of the gap is 4mm to 5mm.
[0015] As a further improvement of this utility model, the encapsulation shell is a transparent plate; or, the encapsulation shell is a glass plate.
[0016] The beneficial effects of this utility model are as follows: By forming a sealed encapsulation space within the encapsulation shell, this utility model can completely prevent moisture intrusion when the solar cell is placed within the encapsulation space, thereby effectively improving the reliability and service life of the photovoltaic module. Attached Figure Description
[0017] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:
[0018] Figure 1 This is a cross-sectional view of a specific embodiment of the photovoltaic module of this utility model;
[0019] Figure 2 for Figure 1 A magnified structural diagram of A in the middle;
[0020] Figure 3 for Figure 1 The diagram shown is a schematic of the photovoltaic module before encapsulation.
[0021] Figure 4 This is a cross-sectional view of another specific embodiment of the photovoltaic module of this utility model;
[0022] Figure 5 for Figure 4 A magnified structural diagram of B in the diagram;
[0023] Figure 6 for Figure 3 The diagram shown is a schematic of the photovoltaic module before encapsulation.
[0024] Figure 7This is a cross-sectional view of another specific embodiment of the photovoltaic module of this utility model;
[0025] Figure 8 for Figure 7 A magnified structural diagram of C;
[0026] Figure 9 for Figure 7 The diagram shown is a schematic of the photovoltaic module before encapsulation.
[0027] Figure 10 This is a plan view of the photovoltaic module of this utility model;
[0028] In the picture:
[0029] 100, Encapsulation housing; 101, Front panel; 102, Back panel; 103, Side panel; 104, Welded section; 104a, First welded section; 104b, Second welded section; M, Encapsulation space;
[0030] 200. Battery cells;
[0031] 300, adhesive film; 301, first adhesive film layer; 302, second adhesive film layer. Detailed Implementation
[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0034] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0035] In the description of this utility model, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.
[0036] like Figures 1 to 10 The diagram shows the encapsulation housing 100 and the photovoltaic module having the encapsulation housing 100 provided by this utility model. A sealed encapsulation space M is formed within the encapsulation housing 100, and the solar cell 200 is located within the encapsulation space M. By placing the solar cell 200 within the sealed encapsulation space M, moisture can be completely prevented from entering the encapsulation space M and affecting the solar cell 200, thereby improving the reliability and lifespan of the photovoltaic module.
[0037] The encapsulation housing 100 includes a front plate portion 101, a back plate portion 102, and a side portion 103. The side of the front plate portion 101 and / or the back plate portion 102 is fused to the side portion 103, thereby forming the encapsulation space M by the front plate portion 101, the back plate portion 102, and the side portion 103.
[0038] By fusion-connecting the side surface of the front panel 101 and the side edge 103, the front panel 101 and the side edge 103 can be joined together and the connection gap between the front panel 101 and the side edge 103 can be sealed. Similarly, by fusion-connecting the side surface of the back panel 102 and the side edge 103, the back panel 102 and the side edge 103 can be joined together and the connection gap between the back panel 102 and the side edge 103 can be sealed. This forms a sealed encapsulation space M within the encapsulation housing 100.
[0039] The front panel 101 and the back panel 102 are spaced apart along the thickness direction of the photovoltaic module and are connected by the side panel 103 to form the encapsulation space M.
[0040] The side portion 103 is disposed along the outer peripheral edges of the front plate portion 101 and the back plate portion 102, and the side portion 103 encloses a rectangular frame, within which the front plate portion 101 and the back plate portion 102 are located. The thickness of the side portion 103 is the sum of the thickness of the front plate portion 101, the thickness of the back plate portion 102, and the height of the packaging space M, that is, the side surfaces of the front plate portion 101 and the back plate portion 102 are connected to the side portion 103.
[0041] More specifically, the encapsulation housing 100 includes the front plate portion 101, the back plate portion 102, the side portion 103, and the welding portion 104, wherein the side of the front plate portion 101 is connected to the side portion 103 and / or the side of the back plate portion 102 is connected to the side portion 103 through the welding portion 104.
[0042] It is understood that when the side of the front plate portion 101 and the side edge portion 103 are fused together, a first welded portion 104a is formed at the connection position of the front plate portion 101 and the side edge portion 103; when the side of the back plate portion 102 and the side edge portion 103 are fused together, a second welded portion 104b is formed at the connection position of the back plate portion 102 and the side edge portion 103.
[0043] Specifically, the front plate portion 101 and / or the back plate portion 102 are fused together with the side portion 103 by welding. The welding can employ high-energy welding methods such as ultrasonic welding, laser welding, or high-energy beam welding, causing the plates at the connection points of the front plate portion 101 and the side portion 103, and / or the back plate portion 102 and the side portion 103, to melt at high temperatures and crystallize into a single unit, thereby forming the fused portion 104.
[0044] In one embodiment, the front plate portion 101 and the side portion 103 are integrally formed, and the front plate portion 101 and the side portion 103 form a downwardly opening receiving cavity. The side of the back plate portion 102 is fused to the side portion 103, that is, a second fused portion 104b is formed at the connection position of the back plate portion 102 and the side portion 103, thereby sealing the opening of the receiving cavity to form the encapsulation space M.
[0045] In another embodiment, the back plate portion 102 and the side portion 103 are integrally formed, and the back plate portion 102 and the side portion 103 form an upwardly opening receiving cavity. The side of the front plate portion 101 is fused to the side portion 103, that is, the first fused portion 104a is formed at the connection position of the front plate portion 101 and the side portion 103, thereby sealing the opening of the receiving cavity to form the encapsulation space M.
[0046] In another embodiment, the front panel 101, the back panel 102, and the side panel 103 are separately disposed. The side of the front panel 101 is fused to the side panel 103, that is, a first fused portion 104a is formed at the connection position between the front panel 101 and the side panel 103. The side of the back panel 102 is fused to the side panel 103, that is, a second fused portion 104b is formed at the connection position between the back panel 102 and the side panel 103. This forms the encapsulation space M.
[0047] In this embodiment, the encapsulation housing 100 is made of glass. On one hand, glass has high light transmittance, ensuring the photoelectric conversion efficiency of the battery cell 200; on the other hand, glass can completely prevent moisture from entering the encapsulation space M. Of course, in other embodiments, the encapsulation housing 100 can also be made of other alternative transparent materials.
[0048] The photovoltaic module includes the aforementioned encapsulation housing 100 and a plurality of solar cells 200. The solar cells 200 are located within the encapsulation space M, thereby completely blocking moisture. The encapsulation space M is a vacuum environment. By evacuating the encapsulation space M, oxidation of the solar cells 200 within the encapsulation space M can be effectively prevented, thereby further improving the service life of the solar cells 200.
[0049] A gap L1, with a width of 4mm to 5mm, exists between the solar cell 200 and the side portion 103. The gap L1 should not be too small; otherwise, welding the front plate portion 101 to the side portion 103 or the back plate portion 102 to the side portion 103 may affect the solar cell 200. Conversely, the gap L1 should not be too large; otherwise, it will increase the distance from the solar cell 200 to the edge of the photovoltaic module, thereby increasing the overall size and material cost of the photovoltaic module.
[0050] The thickness of the battery cell 200 is less than the height of the packaging space M, thereby preventing damage to the battery cell during the packaging process.
[0051] The photovoltaic module also includes an encapsulating film 300 located within the encapsulation space M, the encapsulating film 300 filling at least a portion of the empty area of the encapsulation space M. It is understood that, since there is a gap L1 between the solar cell 200 and the side portion 103, and the thickness of the solar cell 200 is less than the height of the encapsulation space M, after the solar cell 200 is placed within the encapsulation space M, there is an empty area within the encapsulation space M. By placing the encapsulating film 300 within this empty area, it can provide support and restraint for the solar cell 200, and also provide protection for the solar cell 200, further improving the water resistance of the photovoltaic module and preventing damage to the solar cell 200.
[0052] The adhesive film 300 is formed by high-temperature lamination of a first adhesive film layer 301 located between the front plate portion 101 and the battery cell 200, and a second adhesive film layer 302 located between the back plate portion 102 and the battery cell 200. At this time, all empty areas of the encapsulation space M are filled with the adhesive film 300, and the battery cell 200 is located in the central region of the encapsulation space M.
[0053] Reference Figures 1 to 3 In one embodiment, the welded portion 104 includes a first welded portion 104a connecting the front plate portion 101 and the side portion 103, and a second welded portion 104b connecting the back plate portion 102 and the side portion 103.
[0054] Reference Figure 3 The front panel 101, the back panel 102, and the side panel 103 are separately disposed. The front panel 101, the first adhesive film layer 301, the battery cell 200, the second adhesive film layer 302, and the back panel 102 are stacked together in sequence and laminated at high temperature to form a laminate. The first adhesive film layer 301 and the second adhesive film layer 302 simultaneously form the adhesive film 300.
[0055] The side portions 103 are disposed around the perimeter of the laminate, with the side of the front plate portion 101 and the side of the back plate portion 102 contacting the side portions 103. The front plate portion 101 and the side portions 103 are connected by high-energy welding, thereby forming a first weld portion 104a at the connection point between the front plate portion 101 and the side portions 103, sealing the connection gap between the front plate portion 101 and the side portions 103. The back plate portion 102 and the side portions 103 are connected by high-energy welding, thereby forming a second weld portion 104b at the connection point between the back plate portion 102 and the side portions 103, sealing the connection gap between the back plate portion 102 and the side portions 103.
[0056] Thus, a sealed encapsulation space M is formed within the encapsulation housing 100. By encapsulating the solar cells within the encapsulation space M, moisture intrusion is completely prevented. Simultaneously, the edges of the photovoltaic module form a single unit, which increases the creepage distance of the photovoltaic module and shortens the distance from the solar cells 200 to the edge of the photovoltaic module.
[0057] Reference Figures 4 to 6 In another embodiment, the welded portion 104 includes only a second welded portion 104b that connects the back plate portion 102 and the side portion 103.
[0058] Reference Figure 6 The front panel portion 101 and the side panel portion 103 are integrally formed, while the back panel portion 102 is separately formed from the front panel portion 101 and the side panel portion 103. The side panel portion 103 is provided along the four edges of the front panel portion 101 and perpendicular to the front panel portion 101, and the front panel portion 101 and the side panel portion 103 form a downward-opening receiving cavity.
[0059] The first adhesive film layer 301, the battery cell 200, the second adhesive film layer 302 and the back plate portion 102 are stacked sequentially in the accommodating cavity and a laminate is formed by high-temperature lamination. The first adhesive film layer 301 and the second adhesive film layer 302 simultaneously form the adhesive film 300.
[0060] The side of the back plate portion 102 contacts the side portion 103. The back plate portion 102 and the side portion 103 are connected by a high-energy welding method, thereby forming a second weld portion 104b at the connection position of the back plate portion 102 and the side portion 103. The second weld portion 104b seals the connection gap between the back plate portion 102 and the side portion 103, thereby sealing the opening of the accommodating cavity to form a sealed encapsulation space M.
[0061] Reference Figures 7 to 9 In another embodiment, the welded portion 104 includes only a first welded portion 104a that connects the front plate portion 101 and the side portion 103.
[0062] Reference Figure 9 The back panel portion 102 and the side portion 103 are integrally formed, while the front panel portion 101 is separately formed from the back panel portion 102 and the side portion 103. The side portion 103 is formed along the periphery of the back panel portion 102 and perpendicular to the back panel portion 102, and the back panel portion 102 and the side portion 103 form an upward-opening receiving cavity.
[0063] The second adhesive film layer 302, the battery cell 200, the first adhesive film layer 301 and the front plate portion 101 are stacked sequentially in the accommodating cavity and laminated by high temperature. The first adhesive film layer 301 and the second adhesive film layer 302 simultaneously form the adhesive film 300.
[0064] The side of the front plate portion 101 contacts the side portion 103. The front plate portion 101 and the side portion 103 are connected by a high-energy welding method, thereby forming the first weld portion 104a at the connection position of the front plate portion 101 and the side portion 103. The first weld portion 104a seals the connection gap between the front plate portion 101 and the side portion 103, thereby sealing the opening of the accommodating cavity to form the sealed packaging space M.
[0065] In summary, this utility model forms a sealed encapsulation space M within the encapsulation housing 100 and places the solar cell 200 within the encapsulation space M, thereby completely preventing moisture intrusion and effectively improving the reliability and service life of the photovoltaic module.
[0066] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
[0067] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. All equivalent embodiments or modifications made without departing from the spirit of the present utility model should be included within the scope of protection of the present utility model.
Claims
1. A packaging housing (100), characterized in that, include: The front panel (101), back panel (102), and side panel (103) are provided along the outer peripheral edges of the front panel (101) and the back panel (102), and the side panel (103) encloses a rectangular frame, within which the front panel (101) and the back panel (102) are located; wherein the side of the front panel (101) and / or the back panel (102) is fused to the side panel (103), and the front panel (101), the back panel (102), and the side panel (103) enclose a packaging space (M).
2. The packaging housing (100) according to claim 1, characterized in that: The front plate portion (101) and the side portion (103) are integrally formed, and the side of the back plate portion (102) is fused to the side portion (103); Alternatively, the back plate portion (102) and the side portion (103) are integrally formed, and the side of the front plate portion (101) is fused to the side portion (103).
3. The packaging housing (100) according to claim 1, characterized in that: The front plate (101), the back plate (102), and the side plate (103) are separately provided, and the sides of the front plate (101) and the back plate (102) are fused to the side plate (103).
4. A packaging housing (100), characterized in that: An encapsulation space (M) is formed within the encapsulation housing (100). The encapsulation space (M) is formed by a front plate portion (101), a back plate portion (102), a side portion (103), and a welding portion (104). The side portion (103) is provided along the outer peripheral edges of the front plate portion (101) and the back plate portion (102). The side portion (103) encloses a rectangular frame. The front plate portion (101) and the back plate portion (102) are located within the rectangular frame. The side of the front plate portion (101) is connected to the side portion (103) and / or the side of the back plate portion (102) is connected to the side portion (103) through the welding portion (104).
5. The encapsulation housing (100) according to claim 4, characterized in that: The front plate portion (101) and the side portion (103) are integrally formed, and the welded portion (104) includes only a second welded portion (104b) connecting the back plate portion (102) and the side portion (103). Alternatively, the back plate portion (102) and the side portion (103) are integrally formed, and the weld portion (104) includes only a first weld portion (104a) connecting the front plate portion (101) and the side portion (103).
6. The packaging housing (100) according to claim 4, characterized in that: The welded portion (104) includes a first welded portion (104a) connecting the front plate portion (101) and the side portion (103), and a second welded portion (104b) connecting the back plate portion (102) and the side portion (103).
7. A photovoltaic module, characterized in that, include: A plurality of battery cells (200) and a package housing (100) as described in any one of claims 1 to 6, wherein the battery cells (200) are located within the package space (M).
8. The photovoltaic module according to claim 7, characterized in that: It also includes an adhesive film (300) located within the encapsulation housing (100), the adhesive film (300) comprising a first adhesive film layer (301) located between the battery cell (200) and the front panel portion (101) and / or a second adhesive film layer (302) located between the battery cell (200) and the back panel portion (102).
9. The photovoltaic module according to claim 7, characterized in that: There is a gap between the battery cell (200) and the side portion (103), and the width of the gap is 4mm to 5mm.
10. The photovoltaic module according to claim 7, characterized in that: The encapsulation housing (100) is a transparent plate; or, the encapsulation housing (100) is a glass plate.