Photovoltaic module
By introducing an insulating component that wraps around the outer edge of the laminate in photovoltaic modules, the problems of increased size and logistics costs when increasing system voltage are solved, achieving a balance between high voltage and high efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2026-03-24
AI Technical Summary
When increasing system voltage, existing photovoltaic modules increase module size and logistics costs, and traditional methods have failed to effectively improve power output.
Introducing an insulating component into photovoltaic modules, which wraps around the outer edge of the laminate, increases the creepage distance, thereby improving the system voltage while keeping the module size constant.
The system voltage of the photovoltaic modules was increased, which avoided efficiency reduction and did not affect logistics and transportation, thus meeting the high system voltage requirements.
Smart Images
Figure CN224037300U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to photovoltaic technology field especially is related to a photovoltaic module. BACKGROUND
[0002] In prior art, the system voltage of photovoltaic module is reduced by reducing the cable length of the direct current side of the system terminal or reducing the number of busbar boxes, but photovoltaic module needs to have higher system voltage, the system voltage of general photovoltaic module is no higher than 1500V, the system voltage is improved by increasing the distance from the cell piece to the glass edge in photovoltaic module, this method increases the size of photovoltaic module, leads to that power is not promoted, and moreover, the size increase of photovoltaic module also affects the container loading quantity of container, and the logistics cost is improved due to the substantial increase of quantity, therefore, photovoltaic module needs higher system voltage. SUMMARY
[0003] The utility model discloses at least one of the technical problems in prior art is solved, for this, the utility model provides a photovoltaic module, the insulating piece of the photovoltaic module is at least wrapped in the outer peripheral edge of laminated part, so the creepage distance of photovoltaic module can be increased, thereby the system voltage of photovoltaic module can be improved, and the efficiency of photovoltaic module can also be avoided to reduce, and logistics transportation is not affected.
[0004] The photovoltaic module according to the utility model embodiment, comprising: frame, the frame is provided with mounting groove;Laminated part, the laminated part edge is installed in the mounting groove;Insulating piece, the insulating piece is arranged in the laminated part and is at least wrapped in the outer peripheral edge of laminated part, and the insulating piece is at least partially located in mounting groove to insulate the frame and laminated part.
[0005] Therefore, the insulating piece in the photovoltaic module is at least wrapped in the outer peripheral edge of laminated part, so the creepage distance of photovoltaic module can be increased, thereby the system voltage of photovoltaic module can be improved, and the efficiency of photovoltaic module can also be avoided to reduce, and logistics transportation is not affected.
[0006] According to some embodiments of the utility model, the insulating piece includes: peripheral insulation part, the peripheral insulation part is wrapped in the outer peripheral edge of laminated part;Top insulation part, the top insulation part is connected to the top of peripheral insulation part and is wrapped in the top edge of laminated part;Bottom insulation part, the bottom insulation part is connected to the bottom of peripheral insulation part and is wrapped in the bottom edge of laminated part.
[0007] According to some embodiments of the utility model, the mounting groove has the opening that is open to the laminated part, the top insulation part does not exceed the upper end of the opening, and the bottom insulation part does not exceed the lower end of the opening.
[0008] According to some embodiments of the present application, the width of the bottom insulation part is greater than the width of the top insulation part.
[0009] According to some embodiments of the present application, the laminated piece comprises: a top plate; a bottom plate; a battery piece, which is arranged between the top plate and the bottom plate; wherein the outer peripheral insulation part is wrapped around the outer peripheral edge of the top plate and the outer peripheral edge of the bottom plate, the top insulation part is wrapped around the edge of the top plate, and the bottom insulation part is wrapped around the edge of the bottom plate.
[0010] According to some embodiments of the present application, the side of the insulation piece facing the laminated piece is provided with an adhesive layer, and the insulation piece is adhered to the laminated piece through the adhesive layer.
[0011] According to some embodiments of the present application, the thickness of the insulation piece is d, and d satisfies the relationship: d≥0.3mm.
[0012] According to some embodiments of the present application, the side of the insulation piece away from the laminated piece is provided with a water-blocking layer.
[0013] According to some embodiments of the present application, the insulation piece is a PET material piece; and / or the water-blocking layer is a metal foil with water-blocking performance.
[0014] According to some embodiments of the present application, the photovoltaic module further comprises: an adhesive glue, which is adhered between the wall of the mounting groove and the insulation piece.
[0015] Additional aspects and advantages of the present application will be given in part in the following description, and will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0016] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description, taken in conjunction with the following drawings, in which:
[0017] Figure 1 is a structure diagram of a photovoltaic module containing an insulation piece according to an embodiment of the present application;
[0018] Figure 2 is a structure diagram of a photovoltaic module containing an outer peripheral insulation part according to an embodiment of the present application.
[0019] REFERENCE NUMERALS:
[0020] 100, photovoltaic module;
[0021] 10, frame; 11, mounting groove; 111, opening;
[0022] 20, laminated piece; 21, top plate; 22, bottom plate; 23, battery piece;
[0023] 30, insulation piece; 31, peripheral insulation part; 32, top insulation part; 33, bottom insulation part;
[0024] 40, adhesive. DETAILED DESCRIPTION
[0025] The embodiments of the present application are described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary, and the embodiments of the present application are described in detail below.
[0026] The embodiments of the present application are described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary, and the embodiments of the present application are described in detail below. Figures 1-2 The photovoltaic module 100 according to the embodiments of the present application is described below.
[0027] Referring to FIG. 1, Figures 1-2 The photovoltaic module 100 according to the embodiments of the present application is described below.
[0028] Specifically, to improve the system voltage of the photovoltaic module, the length of the cable on the direct current side of the system or the number of the busbar box is reduced, but the photovoltaic module needs to have a higher system voltage, and the system voltage of the photovoltaic module is not higher than 1500V, and the distance between the battery piece and the glass edge in the photovoltaic module is increased to improve the system voltage, which increases the size of the photovoltaic module, resulting in no improvement in power, and moreover, the increase in the size of the photovoltaic module also affects the number of containers, and the increase in the number results in an increase in logistics cost, and therefore, the photovoltaic module with a higher system voltage is needed.
[0029] The frame 10 in the photovoltaic module 100 is provided with the mounting groove 11, and the mounting groove 11 can provide a mounting space for the laminated piece 20, so that the installation of the laminated piece 20 is facilitated.
[0030] Further, the edge of the laminated piece 20 is provided with an insulating piece 30, which is wrapped around the outer peripheral edge of the laminated piece 20, so as to prevent the laminated piece 20 from moving, since the laminated piece 20 needs to be fixed in the mounting groove 11 by the adhesive 40. Since the metal frame 10 is conductive, when the adhesive 40 between the laminated piece 20 and the frame 10 falls off, the laminated piece 20 will directly contact the frame 10, so that the creepage distance of the photovoltaic module 100 is the shortest distance from the cell 23 in the laminated piece 20 to the edge of the laminated piece 20, which reduces the system voltage of the photovoltaic module 100.
[0031] Therefore, the insulating piece 30 is wrapped around at least the outer peripheral edge of the laminated piece 20, and since the insulating piece 30 has insulating properties, when the adhesive 40 between the laminated piece 20 and the frame 10 falls off, the laminated piece 20 will avoid direct contact with the frame 10, at which time the creepage distance of the photovoltaic module 100 will increase, and the creepage distance is the sum of the shortest distance b from the cell 23 to the edge of the laminated piece 20, the distance c from the cell 23 to the upper surface of the insulating piece 30 at the top of the laminated piece 20, and the distance a from the insulating piece 30 at the top of the laminated piece 20 to the outlet of the mounting groove 11, so as to increase the system voltage of the photovoltaic module 100. According to the requirements of the corresponding creepage distance, the creepage distance a+b+c meets the requirements, and the total length can be adjusted according to the actual situation, so as to change the creepage distance and meet the requirements under different conditions.
[0032] Further, since the shortest distance from the cell 23 to the edge of the laminated piece 20 does not change, that is, the size of the photovoltaic module 100 remains unchanged, so as to meet the requirement of increasing the creepage distance of the photovoltaic module 100 without changing the size of the photovoltaic module 100.
[0033] Moreover, the creepage distance of the photovoltaic module 100 is increased without increasing the size of the photovoltaic module 100, thereby meeting the requirement of high system voltage of the photovoltaic module 100, such as 2000V system voltage and 3000V system voltage, so as to avoid reducing the efficiency of the photovoltaic module 100 and also not affecting logistics transportation.
[0034] Therefore, the insulating piece 30 is wrapped around at least the outer peripheral edge of the laminated piece 20, so as to increase the creepage distance of the photovoltaic module 100, thereby increasing the system voltage of the photovoltaic module 100, and also avoiding reducing the efficiency of the photovoltaic module 100 and not affecting logistics transportation.
[0035] According to some embodiments of the present application, such as Figure 1As shown, the insulation piece 30 comprises: an outer peripheral insulation portion 31, a top insulation portion 32 and a bottom insulation portion 33, the outer peripheral insulation portion 31 is wrapped around the outer peripheral edge of the laminated piece 20, the top insulation portion 32 is connected to the top of the outer peripheral insulation portion 31, and the top insulation portion 32 is wrapped around the top edge of the laminated piece 20, and the bottom insulation portion 33 is connected to the bottom of the outer peripheral insulation portion 31, and the bottom insulation portion 33 is wrapped around the bottom edge of the laminated piece 20.
[0036] As shown, the insulation piece 30 comprises: an outer peripheral insulation portion 31, a top insulation portion 32 and a bottom insulation portion 33, the outer peripheral insulation portion 31 is wrapped around the outer peripheral edge of the laminated piece 20, the top insulation portion 32 is connected to the top of the outer peripheral insulation portion 31, and the top insulation portion 32 is wrapped around the top edge of the laminated piece 20, and the bottom insulation portion 33 is connected to the bottom of the outer peripheral insulation portion 31, and the bottom insulation portion 33 is wrapped around the bottom edge of the laminated piece 20.
[0037] Further, the top insulation portion 32 wraps the top of the outer peripheral insulation portion 31, so that the top of the outer peripheral insulation portion 31 can play an insulation role, thereby avoiding the direct contact between the top of the outer peripheral insulation portion 31 and the frame 10.
[0038] Similarly, the outer peripheral insulation portion 31 is wrapped around the outer peripheral edge of the laminated piece 20, so that the outer peripheral edge of the laminated piece 20 can play an insulation role, thereby avoiding the direct contact between the outer peripheral edge of the laminated piece 20 and the frame 10.
[0039] Moreover, the bottom insulation portion 33 is wrapped around the bottom edge of the laminated piece 20, so that the bottom edge of the laminated piece 20 can play an insulation role, thereby avoiding the direct contact between the bottom edge of the laminated piece 20 and the frame 10.
[0040] According to some embodiments of the present application, as shown in Figure 1 and Figure 2 As shown, the mounting groove 11 has an opening 111 which is open towards the laminated piece 20, the top insulation portion 32 does not exceed the upper end of the opening 111, and the bottom insulation portion 33 does not exceed the lower end of the opening 111.
[0041] As shown, the mounting groove 11 has an opening 111 which is open towards the laminated piece 20, the top insulation portion 32 does not exceed the upper end of the opening 111, and the bottom insulation portion 33 does not exceed the lower end of the opening 111.
[0042] As shown, the mounting groove 11 has an opening 111 which is open towards the laminated piece 20, the top insulation portion 32 does not exceed the upper end of the opening 111, and the bottom insulation portion 33 does not exceed the lower end of the opening 111.
[0043] According to some embodiments of the present application, as shown inFigure 1 As shown, the width of the bottom insulation part 33 is greater than the width of the top insulation part 32.
[0044] Specifically, since the width of the bottom of the laminated piece 20 in the mounting groove 11 is greater than the width of the top of the laminated piece 20 in the mounting groove 11, in order to prevent the top of the laminated piece 20 from directly contacting the frame 10, the top of the laminated piece 20 is provided with the top insulation part 32, so that the top of the laminated piece 20 can be prevented from affecting the creepage distance of the photovoltaic module 100.
[0045] In addition, in order to prevent the bottom of the laminated piece 20 from directly contacting the frame 10, the bottom of the laminated piece 20 is provided with the bottom insulation part 33, so that the bottom of the laminated piece 20 can be prevented from affecting the creepage distance of the photovoltaic module 100.
[0046] According to some embodiments of the present application, as shown in Figure 1 As shown, the laminated piece 20 comprises a top plate 21, a bottom plate 22 and a cell piece 23, the cell piece 23 is arranged between the top plate 21 and the bottom plate 22, wherein the outer peripheral insulation part 31 is wrapped around the outer peripheral edge of the top plate 21 and the outer peripheral edge of the bottom plate 22, the top insulation part 32 is wrapped around the edge of the top plate 21, and the bottom insulation part 33 is wrapped around the edge of the bottom plate 22.
[0047] The top plate 21 of the laminated piece 20 is a glass plate, which can make a large amount of light be received by the cell piece 23, and the bottom plate 22 can also be provided as a glass plate. The outer peripheral insulation part 31 is wrapped around the outer peripheral edge of the top plate 21 and the outer peripheral edge of the bottom plate 22, and the outer peripheral insulation part 31 has the characteristic of insulation, which can prevent the outer peripheral edge of the top plate 21 and the outer peripheral edge of the bottom plate 22 from directly contacting the frame 10.
[0048] Similarly, the top insulation part 32 is wrapped around the edge of the top plate 21, and the top insulation part 32 also has insulation, so that the edge of the top plate 21 can be prevented from directly contacting the frame 10.
[0049] The bottom insulation part 33 is wrapped around the edge of the bottom plate 22, and the bottom insulation part 33 also has the characteristic of insulation, so that the edge of the bottom plate 22 can be prevented from directly contacting the frame 10.
[0050] According to some embodiments of the present application, as shown in Figure 1 As shown, the side of the insulation piece 30 facing the laminated piece 20 is provided with an adhesive layer, and the insulation piece 30 is adhered to the laminated piece 20 through the adhesive layer.
[0051] The adhesive layer can be a colloid, and the side of the insulation piece 30 facing the laminated piece 20, i.e. the inner surface of the insulation piece 30, is provided with the adhesive layer, which can make the connection between the insulation piece 30 and the laminated piece 20 more stable and firm, so that the insulation piece 30 on the laminated piece 20 can be prevented from falling off.
[0052] According to some embodiments of the present application, the thickness of the insulation piece 30 is d, and d satisfies the relationship: d≥0.3mm.
[0053] The thickness of the insulation piece 30 is at least 0.3mm, and if the thickness of the insulation piece 30 is less than 0.3mm, the insulation piece 30 will be damaged, thereby reducing the service life of the insulation piece 30.
[0054] Further, the thickness of the insulation piece 30 is greater than 0.3mm, for example, the thickness d of the insulation piece 30 can be set to 1mm, 2mm, which can improve the wear resistance of the insulation piece 30, thereby prolonging the service life of the insulation piece 30.
[0055] According to some embodiments of the present application, the side of the insulation piece 30 away from the laminated piece 20 is provided with a water-blocking layer.
[0056] The side of the insulation piece 30 away from the laminated piece 20, i.e. the outer surface of the insulation piece 30, is provided with a water-blocking layer, and the water-blocking layer is arranged on the outer surface of the insulation piece 30, which can increase the water-blocking performance, thereby preventing water vapor from entering the laminated piece 20 to corrode the battery piece 23, and further prolonging the service life of the photovoltaic module 100.
[0057] According to the specific embodiments of the present application, the insulation piece 30 is a PET material piece, and / or the water-blocking layer is a metal foil with water-blocking performance.
[0058] Specifically, the insulation piece 30 is a PET material piece, which has good chemical stability and can resist the corrosion of various chemicals, thereby prolonging the service life of the photovoltaic module 100. Moreover, the PET material piece has good thermal stability within a certain temperature range and is suitable for use in various environmental conditions. In addition, the PET material piece has good strength and toughness and can withstand certain mechanical stress, thereby reducing the risk of damage.
[0059] In addition, the water-blocking layer is a metal foil, which has good water-blocking performance and can effectively prevent water from penetrating, thereby protecting the battery piece 23 inside the laminated piece 20 from being affected.
[0060] According to some embodiments of the present application, as shown in Figure 1 The photovoltaic module 100 further comprises an adhesive 40 bonded between the wall of the mounting groove 11 and the insulation piece 30.
[0061] The adhesive 40 is adhered between the wall of the mounting groove 11 and the insulating member 30, which can further improve the insulation performance of the insulating member 30, and can prevent the laminated member 20 with the insulating member 30 from moving, so that the laminated member 20 with the insulating member 30 in the mounting groove 11 is more stable and firm in connection with the frame 10 through the adhesive 40.
[0062] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0063] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "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 application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.
[0064] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.
Claims
1. A photovoltaic module, characterized in that, include: The frame is provided with a mounting groove; A laminate, wherein the edge of the laminate is mounted in the mounting groove; An insulating element is disposed on the laminate and at least covers the outer peripheral edge of the laminate, the insulating element being at least partially located within a mounting groove to insulate the frame and the laminate. A water-blocking layer is provided on the side of the insulating component away from the laminate.
2. The photovoltaic module according to claim 1, characterized in that, The insulating component includes: An outer peripheral insulating portion, which wraps around the outer peripheral edge of the laminate; A top insulating portion, which is connected to the top of the outer peripheral insulating portion and wraps around the top edge of the laminate; A bottom insulating portion, which is connected to the bottom of the outer peripheral insulating portion and wraps around the bottom edge of the laminate.
3. The photovoltaic module according to claim 2, characterized in that, The mounting groove has an opening that faces the laminate, the top insulation portion does not extend beyond the upper end of the opening, and the bottom insulation portion does not extend beyond the lower end of the opening.
4. The photovoltaic module according to claim 2, characterized in that, The width of the bottom insulating portion is greater than the width of the top insulating portion.
5. The photovoltaic module according to claim 2, characterized in that, The laminate includes: roof; Base plate; A battery cell, wherein the battery cell is disposed between the top plate and the bottom plate; The outer peripheral insulating portion wraps around the outer peripheral edge of the top plate and the outer peripheral edge of the bottom plate, the top insulating portion wraps around the edge of the top plate, and the bottom insulating portion wraps around the edge of the bottom plate.
6. The photovoltaic module according to claim 1, characterized in that, An adhesive layer is provided on the side of the insulating component facing the laminate, and the insulating component is bonded to the laminate through the adhesive layer.
7. The photovoltaic module according to claim 1, characterized in that, The thickness of the insulating component is d, and d satisfies the relationship: d≥0.3mm.
8. The photovoltaic module according to claim 1, characterized in that, The insulating component is made of PET material; and / or The water-blocking layer is a metal foil with water-blocking properties.
9. The photovoltaic module according to claim 1, characterized in that, Also includes: An adhesive is used to bond the wall of the mounting groove to the insulating component.