Photovoltaic frame and photovoltaic module

Abstract

The utility model relates to the field of photovoltaic technology, and discloses a photovoltaic frame and a photovoltaic module, and the photovoltaic frame comprises an upper supporting part, a lower supporting part, a limiting part, a first side part, and a second side part. The upper supporting part and the lower supporting part are oppositely arranged, and the limiting part is located on the side, away from the lower supporting part, of the upper supporting part; the first side edge part is connected with the limiting part and the upper supporting part, and a clamping groove is defined by the upper supporting part, the first side edge part and the limiting part; the second side edge part is connected with the upper supporting part and the lower supporting part; a slotted hole is formed in the bottom surface, close to the upper supporting part, of the limiting part and extends to the second end of the limiting part from the first end of the limiting part; the first end is close to the first side part, and the second end is far away from the first side part, so that the stability of the photovoltaic module and the effect of preventing water accumulation and dust accumulation are considered.

Description

Technical Field

[0001] This application relates to the field of photovoltaic technology, and in particular to a photovoltaic frame and a photovoltaic module. Background Technology

[0002] The photovoltaic (PV) frame is a crucial component of PV modules, playing a vital role in protecting the modules, improving performance, reducing costs, and ensuring safety. It is an indispensable part of PV modules. However, the accumulation of water and dust on the module surface leads to a significant reduction in module efficiency, a problem that is quite prominent in the PV industry.

[0003] A photovoltaic (PV) frame has three sides: A, B, and C. Side A is the light-receiving side, which is usually in contact with the front of the PV module, i.e., the side containing the solar cells. To improve the effectiveness of the PV frame in preventing water and dust accumulation, the following two methods are mainly used in related technologies: one solution is to remove all sides A, thereby preventing water and dust accumulation; the other solution is to form a through slot on side A, through which accumulated water and dust are led out.

[0004] However, both of these methods will affect the stability of photovoltaic modules, and cannot simultaneously ensure the stability of photovoltaic modules and the effect of preventing water and dust accumulation. Utility Model Content

[0005] The purpose of this application is to provide a photovoltaic frame and photovoltaic module, thereby taking into account both the stability of the photovoltaic module and the effect of preventing water and dust accumulation.

[0006] To address the aforementioned technical problems, embodiments of this application provide a photovoltaic frame, comprising: an upper support portion, a lower support portion, a limiting portion, a first side portion, and a second side portion; the upper support portion and the lower support portion are disposed opposite to each other, and the limiting portion is located on the side of the upper support portion away from the lower support portion; the first side portion connects the limiting portion and the upper support portion, and the upper support portion, the first side portion, and the limiting portion form a slot; the second side portion connects the upper support portion and the lower support portion; the limiting portion has a slot near the bottom surface of the upper support portion, the slot extending from a first end of the limiting portion to a second end of the limiting portion; the first end is near the first side portion, and the second end is away from the first side portion.

[0007] Embodiments of this application also provide a photovoltaic module, including: a laminate and a photovoltaic frame as described in any of the preceding claims; the laminate is at least partially located within the slot; wherein the laminate includes a panel, a first encapsulating film, a solar cell, a second encapsulating film, and a backsheet stacked sequentially.

[0008] In some embodiments, the photovoltaic frame further includes: a third side portion, the third side portion connecting the upper support portion and the lower support portion; the second side portion, the upper support portion, the third side portion and the lower support portion forming a cavity.

[0009] In some embodiments, the height of the slot is one-third to one-half the thickness of the limiting portion.

[0010] In some embodiments, the width of the slot is between one-half and one times the thickness of the limiting portion.

[0011] In some embodiments, the bottom surface of the limiting portion is provided with a plurality of parallel slots; the distance between two adjacent slots is greater than or equal to the width of the slot.

[0012] In some embodiments, the side of the first side portion near the card slot is provided with a plurality of parallel first protrusions.

[0013] In some embodiments, the surface of the upper support portion away from the limiting portion is provided with a plurality of second protrusions, and the plurality of second protrusions are arranged along the direction from the first end of the limiting portion to the second end of the limiting portion.

[0014] In some embodiments, the second side portion is connected to one end of the upper support portion away from the first side portion; the photovoltaic frame further includes a first extension member; the first extension member extends from the connection point between the upper support portion and the second side portion in a direction away from the first side portion.

[0015] In some embodiments, the upper support portion, the lower support portion, the limiting portion, the first side portion, the second side portion, the third side portion, and the first extension member are integrally formed.

[0016] The technical solution provided in this application has at least the following advantages:

[0017] This application provides slots on the bottom surface of the limiting part of the photovoltaic frame, thereby drawing out accumulated water and dust through the slots. At the same time, the limiting part, i.e., the A side of the photovoltaic frame, is fully retained, ensuring that the A side can effectively fix the laminate of the photovoltaic module and ensure the stability of the photovoltaic module. Thus, it takes into account both the stability of the photovoltaic module and the effect of preventing water and dust accumulation. Attached Figure Description

[0018] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0019] Figure 1 This is a schematic diagram of a photovoltaic frame structure based on relevant technologies;

[0020] Figure 2 This is a schematic diagram of another photovoltaic frame structure based on related technologies;

[0021] Figure 3 This is a cross-sectional structural diagram of a photovoltaic frame according to an embodiment of this application;

[0022] Figure 4 This is a schematic diagram of the bottom surface of the limiting part of a photovoltaic module according to an embodiment of this application;

[0023] Figure 5 This is a schematic diagram of the structure of the first side of the limiting portion of a photovoltaic module according to an embodiment of this application;

[0024] Figure 6 This is a cross-sectional structural schematic diagram of another photovoltaic frame according to an embodiment of this application;

[0025] Figure 7 This is a cross-sectional structural diagram of another photovoltaic frame according to an embodiment of this application;

[0026] Figure 8 This is a cross-sectional structural diagram of another photovoltaic frame according to an embodiment of this application;

[0027] Figure 9 This is a cross-sectional structural schematic diagram of another photovoltaic frame according to an embodiment of this application;

[0028] Figure 10 This is a schematic diagram of the structure of a photovoltaic module according to an embodiment of this application;

[0029] Figure 11 This is a structural schematic diagram of a laminate according to an embodiment of this application. Detailed Implementation

[0030] As can be seen from the background technology, current photovoltaic frames cannot simultaneously ensure the stability of photovoltaic modules and prevent water and dust accumulation.

[0031] To improve the effectiveness of photovoltaic frames in preventing water and dust accumulation, the photovoltaic frames in related technologies mainly adopt the following two methods.

[0032] like Figure 1 The image shown is a schematic diagram of a photovoltaic frame structure in related technologies. Figure 1The A-side of the photovoltaic frame is removed, leaving only the frame 10. When the laminate is installed on the photovoltaic frame, the thickness of the laminate does not exceed the height of the frame to prevent water and dust accumulation. However, this means that the laminate and the frame can only be connected by an adhesive, which results in poor stability of the connection and poor stability of the photovoltaic module.

[0033] like Figure 2 As shown, this is a schematic diagram of another photovoltaic frame structure in the related technology. A through slot 10a is formed on the A side 100 of the photovoltaic module to draw out accumulated water and dust. However, the through slot 10a formed will affect the strength of the photovoltaic frame, greatly reduce the load on the photovoltaic frame, and reduce the stability of the photovoltaic module.

[0034] To solve the above-mentioned technical problems, this application provides slots on the bottom surface of the limiting part of the photovoltaic frame, so as to draw out accumulated water and dust through the slots. At the same time, the limiting part, i.e., the A side of the photovoltaic frame, is completely retained, ensuring that the A side can well fix the laminate of the photovoltaic module and ensure the stability of the photovoltaic module, thus taking into account both the stability of the photovoltaic module and the effect of preventing water and dust accumulation.

[0035] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined. Similarly, "multiple sets" refers to two or more sets (including two sets), and "multiple pieces" refers to two or more pieces (including two pieces).

[0036] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0037] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A exists, A and B exist simultaneously, and B exists. In addition, the character " / " in this document generally indicates that the related objects before and after it have an "or" relationship.

[0038] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application 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 the embodiments of this application. For example, if the device or element in the illustration is inverted, then the element described as "below," "under," "below," or "bottom" of other elements or features will be oriented "above" or "top" of said other elements or features. Therefore, the term "below" may cover both above and below orientation depending on the context in which the term is used, which will be obvious to those skilled in the art. Materials may be oriented in other ways (e.g., rotated 90 degrees, inverted, flipped), and the spatial relative descriptive terms used herein may be interpreted accordingly.

[0039] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0040] In the accompanying drawings corresponding to the embodiments of this application, some structures are enlarged for better understanding and ease of description. Furthermore, when describing a component as "generally" formed on another component, it means that the component is not formed on the entire surface (or front surface) of the other component, nor is it formed on a portion of the edge of the entire surface.

[0041] In the description of the embodiments of this application, when a component "includes" another component, other components are not excluded unless otherwise stated, and other components may be further included. The formation or provision of a second component above or on a first component, or on the surface of a first component, or on one side of a first component, may include embodiments where the first and second components are in direct contact, and may also include embodiments where an additional component may be present between the first and second components, thereby preventing direct contact between the first and second components. For simplicity and clarity, various components may be drawn at different scales. In the drawings, some layers / components may be omitted for simplicity. Unless otherwise specified, the formation or provision of a second component on the surface of a first component refers to direct contact between the first and second components. The term "component" may refer to a layer, film, region, portion, structure, etc.

[0042] The terminology used in the description of the various embodiments herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used in the description of the various embodiments and the appended claims, the term "component" is also intended to include the plural form unless the context clearly indicates otherwise. Components include layers, films, regions, or plates, etc.

[0043] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the embodiments of this disclosure to facilitate a better understanding of the disclosure. However, the technical solutions claimed in this disclosure can be implemented even without these technical details and various variations and modifications based on the following embodiments.

[0044] Figure 3 This is a cross-sectional view of a photovoltaic frame according to this embodiment. Figure 4 This is a schematic diagram of the bottom surface of the limiting part of a photovoltaic module according to this embodiment; Figure 5 This is a schematic diagram of the structure of the first side of the limiting part of a photovoltaic module according to this embodiment;

[0045] refer to Figure 3 , Figure 4 , Figure 5 The photovoltaic frame may include: an upper support portion 101, a lower support portion 102, a limiting portion 103, a first side portion 104, and a second side portion 105.

[0046] Specifically, the limiting part 103 is disposed opposite to the supporting part 101, the upper supporting part 101 is disposed opposite to the lower supporting part 102, and the limiting part 103 is located on the side of the upper supporting part 101 away from the lower supporting part 102; the first side part 104 connects the limiting part 103 and the upper supporting part 101, and the limiting part 103, the first side part 104, and the upper supporting part 101 form a slot; the second side part 105 connects the upper supporting part 101 and the lower supporting part 102; the limiting part 103 has a slot 106 on the bottom surface near the upper supporting part 101, and the slot 106 extends from the first end of the limiting part 103 to the second end of the limiting part 103, with the first end close to the first side part 104 and the second end away from the first side part 104. Figure 3 The first side 1031 of the limiting part 103 is the first end of the limiting part 103, and the second side 1032 of the limiting part 103 is the second end of the limiting part 103.

[0047] Specifically, the slot 106 can be rectangular or trapezoidal. The slot 106 is located on the bottom surface of the limiting part 103 and does not penetrate the limiting part 103, thereby preserving the A side of the photovoltaic frame, i.e., the limiting part 103. When the laminate is installed in the slot, the stability of the photovoltaic module can be improved.

[0048] In some embodiments, the second side portion 105 is connected to the end of the upper support portion 101 that is away from the first side portion 104. (See reference) Figure 3 The limiting part 103, the first side part 104, the upper support part 101, the second side part 105, and the lower support part 102 of the photovoltaic module have an "S" shaped cross-section, which has high bending stiffness and load-bearing capacity. It can effectively share the load pressure of the laminate, improve the stability of the photovoltaic module, and at the same time, reduce material costs.

[0049] Figure 6 This is a cross-sectional structural diagram of another photovoltaic frame in this embodiment. The second side 105 can be connected to the end of the upper support 101 near the first side 104. In this way, the outside of the frame can be made flat, preventing water and dust accumulation, and reducing material costs.

[0050] Figure 7 This is a cross-sectional view of another photovoltaic frame in this embodiment. The photovoltaic frame also includes a third side portion 107, which connects the upper support portion 101 and the lower support portion 102; the second side portion 105, the upper support portion 101, the third side portion 107, and the lower support portion 102 form a cavity.

[0051] Specifically, a cavity is formed by the second side portion 105, the upper support portion 101, the third side portion 107, and the lower support portion 102. The open cavity design has high mechanical strength and good resistance to bending and tension, which further distributes the load pressure of the laminate and further improves the stability of the photovoltaic module.

[0052] Specifically, the limiting part 103 can be a trapezoidal structure, as shown in the reference. Figure 3 , Figure 6 , Figure 7 The side of the limiting part 103 away from the upper support part 101 is not parallel to the bottom surface of the limiting part 103, and the thickness of the limiting part 103 gradually decreases in the direction from the first end of the limiting part 103 to the second end of the limiting part 103. As a result, when the laminate is installed in the slot, the surface of the limiting part 103 and the surface of the laminate can transition smoothly, reducing the probability of water and dust accumulation between the surface of the laminate and the limiting part 103, and improving the anti-water and anti-dust effect of the photovoltaic module.

[0053] Specifically, the thickness of the limiting portion 103 is in the range of 1.2mm to 1.9mm, such as 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, and 1.9mm. It should be noted that the thickness of the limiting portion 103 is the maximum thickness of the trapezoidal structure, that is, the length of the first side surface 1031 along the direction perpendicular to the bottom surface of the limiting portion 103.

[0054] The thickness of the limiting part 103 varies depending on the material type, module size, and application scenario. For aluminum alloy frames, due to their relatively low hardness, a thicker wall is usually required. For example, the limiting part 103 is set to 1.4mm to 1.5mm to provide sufficient support strength, such as 1.4mm, 1.45mm, or 1.5mm. For double-glass modules or larger photovoltaic modules, the thickness of the limiting part 103 can be further increased. For example, the thickness of the limiting part 103 is set to between 1.6mm and 1.9mm, such as 1.6mm, 1.7mm, 1.8mm, or 1.9mm, to meet higher mechanical strength requirements.

[0055] In some embodiments, the height of the slot 106 is between one-third and one-half the thickness of the limiting portion 103.

[0056] Specifically, the height of the slot 106 is the distance from the bottom surface of the limiting part 103 to the bottom surface of the slot 106. By setting the height of the slot 106 within the range of one-third to one-half of the thickness of the limiting part 103, the problem of poor water and dust passage due to the slot 106 being too low can be avoided. It can also avoid the problem of affecting the load strength of the photovoltaic frame due to the slot 106 being too high. Thus, the anti-water and dust accumulation effect of the photovoltaic module and the stability of the photovoltaic module are taken into account.

[0057] Specifically, when the thickness of the limiting part 103 is 1.2mm, the height of the slot 106 is between 0.4mm and 0.6mm, such as 0.4mm, 0.45mm, 0.5mm, 0.55mm, and 0.6mm; when the thickness of the limiting part 103 is 1.5mm, the height of the slot 106 is between 0.5mm and 0.75mm, such as 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, and 0.75mm; when the thickness of the limiting part 103 is 1.8mm, the height of the slot 106 is between 0.6mm and 0.9mm, such as 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, and 0.9mm.

[0058] In some embodiments, the width of the slot 106 is between one-half and one-times the thickness of the limiting portion 103.

[0059] Specifically, by setting the width of the slot 106 to between one-half and one-times the thickness of the limiting part 103, the problem of poor water and dust passage due to the slot 106 being too narrow can be avoided, and the problem of affecting the load strength of the photovoltaic frame due to the slot 106 being too wide can also be avoided, thus balancing the anti-water and dust accumulation effect of the photovoltaic module and the stability of the photovoltaic module.

[0060] Specifically, when the thickness of the limiting part 103 is 1.2mm, the width of the slot 106 is between 0.6mm and 1.2mm, such as 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, and 1.2mm; when the thickness of the limiting part 103 is 1.5mm, the width of the slot 106 is between 0.75mm and 1.5mm, such as 0.75mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, and 1.5mm; when the thickness of the limiting part 103 is 1.8mm, the width of the slot 106 is between 0.9mm and 1.8mm, such as 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, and 1.8mm.

[0061] refer to Figure 4 , Figure 5 The bottom surface of the limiting part 103 is provided with a plurality of parallel slots 106; the distance between two adjacent slots 106 is greater than or equal to the width of the slot 106.

[0062] Specifically, by setting the spacing between two adjacent slots 106 to be greater than or equal to the width of the slot 106, the problem of the load strength of the photovoltaic frame being affected by the excessively small spacing between the slots 106 can be avoided, thereby improving the stability of the photovoltaic module.

[0063] Specifically, when the thickness of the limiting part 103 is 1.2mm, the distance between two adjacent slots 106 is greater than 1.2mm, such as 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, etc.; when the thickness of the limiting part 103 is 1.5mm, the distance between two adjacent slots 106 is greater than 1.5mm, such as 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, etc.; when the thickness of the limiting part 103 is 1.8mm, the distance between two adjacent slots 106 is greater than 1.8mm, such as 1.8mm, 1.9mm, 2mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, etc.

[0064] refer to Figure 3 , Figure 7 The second side portion 105 is connected to the end of the upper support portion 101 away from the first side portion 104; the photovoltaic frame also includes a first extension member 108; the first extension member 108 extends from the connection between the upper support portion 101 and the second side portion 105 in a direction away from the first side portion 104.

[0065] Specifically, by providing a first extension 108 extending in a direction away from the first side portion 104 in the upper support portion 101, when the laminate is placed in the slot, the contact area between the bottom of the laminate and the photovoltaic frame can be increased, further dispersing the load pressure of the laminate and improving the stability of the photovoltaic module.

[0066] It should be noted that the total length of the upper support 101 and the first extension 108 does not exceed the length of the limiting part 103, thereby improving the stability of the photovoltaic module when the laminate is installed in the slot.

[0067] Figure 8 This is a cross-sectional view of another photovoltaic frame in this embodiment. At the junction of the lower support portion 102 and the second side portion 105, a second extension member 109 extends out in a direction away from the third side portion 107. The lower support portion 102 and the second extension member 109 form the C-side of the photovoltaic frame, i.e., the backlight surface. The second extension member 109 is provided with mounting holes for firmly installing the photovoltaic module and improving the stability of the photovoltaic module.

[0068] Figure 9 This is a cross-sectional view of another photovoltaic frame in this embodiment. The first side 104 near the slot has a plurality of parallel first protrusions 110.

[0069] Specifically, by providing multiple parallel first protrusions 110 on the side of the first side portion 104 near the slot, the stability of the laminate installed in the slot can be improved, thereby enhancing the stability of the photovoltaic module. Simultaneously, since the first protrusions 110 are arranged in parallel, a groove is formed between adjacent first protrusions 110. When the laminate is installed in the slot, silicone can be injected into the groove to achieve a fixed connection between the laminate and the limiting portion 103, further improving the stability of the photovoltaic module.

[0070] refer to Figure 9 The upper support portion 101 has a plurality of second protrusions 111 on its surface away from the limiting portion 103. The plurality of second protrusions 111 are arranged along the direction from the first end of the limiting portion 103 to the second end of the limiting portion 103.

[0071] Specifically, by providing a plurality of second protrusions 111 arranged along the direction from the first end to the second end of the limiting part 103 on the surface of the upper support part 101 away from the limiting part 103, the strength of the upper support plate 103 can be improved, the stability of the laminate installed in the slot can be improved, and the stability of the photovoltaic module can be improved.

[0072] In some embodiments, the upper support portion 101, lower support portion 102, limiting portion 103, first side portion 104, second side portion 105, third side portion 107, and first extension member 108 are integrally formed; wherein, when the photovoltaic frame is provided with a first protrusion 110, a second protrusion 111, and a second extension member 109, the upper support portion 101, lower support portion 102, limiting portion 103, first side portion 104, second side portion 105, third side portion 107, first extension member 108, first protrusion 110, second protrusion 111, and second extension member 109 are also integrally formed, thereby improving the stability of the photovoltaic frame.

[0073] Specifically, by making the photovoltaic frame a one-piece molded structure, the stability of the photovoltaic module is further improved. The photovoltaic module can be made of stainless steel, aluminum alloy, or composite materials, with resin being a suitable composite material.

[0074] In the aforementioned photovoltaic frame, the bottom surface of the limiting part 103 of the photovoltaic frame is provided with a slot 106, so that water and dust can be drawn out through the slot 106. At the same time, the limiting part 103, i.e. the limiting part 103 of the photovoltaic frame, i.e. the A side, is fully retained, ensuring that the A side can well fix the laminate of the photovoltaic module and ensure the stability of the photovoltaic module, thus taking into account both the stability of the photovoltaic module and the effect of preventing water and dust accumulation.

[0075] Embodiments of this application also provide a photovoltaic module. Figure 10 This is a schematic diagram of the photovoltaic module in this embodiment. Figure 11 This is a schematic diagram of the structure of the laminate.

[0076] refer to Figure 10 The photovoltaic module includes: a laminate 20 and a photovoltaic frame as described in the above embodiment; the laminate 20 is at least partially located within the slot.

[0077] refer to Figure 11 The laminate 20 includes a panel 201, a first adhesive film 202, a battery string 203, a second adhesive film 204, and a back panel 205 stacked in sequence.

[0078] Specifically, panel 201 is located on the bottom surface of limiting part 103 and serves as the light-receiving surface. First adhesive film 202 is located on the surface of panel 201 away from limiting part 103. Battery string 203 is located on the surface of first adhesive film 202 away from panel 201. Second adhesive film 204 is located on the surface of battery string 203 away from first adhesive film 202. Back panel 205 is located on the surface of second adhesive film 204 away from battery string 203. Back panel 205 is the backlight surface.

[0079] The photovoltaic module includes a photovoltaic frame and a laminate 20. The laminate 20 is at least partially disposed in a slot in the photovoltaic frame so that the laminate is stably fixed in the photovoltaic frame, thereby improving the stability of the photovoltaic module.

[0080] The types of laminates 20 include, but are not limited to, back contact (BC) cells, emitter-back passivated cells (PERC), heterojunction with intrinsic thin-layer (HIT) cells, tunnel oxide passivated contact (TOPCon) cells, perovskite solar cells (PSC), multi-busbar cells, and busbarless cells. Different types can be selected according to actual needs. This application embodiment does not make any special limitation on the type of laminate.

[0081] Specifically, the battery string 203 comprises multiple battery cells, which are electrically connected to each other by conductive welding wires, welding strips, and conductive adhesive, forming a battery string by connecting multiple battery cells in series. This helps to reduce or eliminate the gap between two adjacent battery cells, increase the light-receiving area of ​​the laminate, and improve light utilization. The laminate 20 includes multiple battery strings 203, which are electrically connected to each other by busbars, thereby realizing the current collection and output of multiple battery strings 203 to ensure the efficient operation and stability of the photovoltaic module.

[0082] Specifically, panel 201 is located on the light-receiving surface of laminate 20, and backsheet 205 is located on the backlight-receiving surface of laminate 20. Panel 201 can be a transparent polymer material, such as ethylene-tetrafluoroethylene copolymer (ETFE), polyvinylidene fluoride (PVF), or polyvinylidene difluoride (PVDF), to reduce the weight of laminate 20 and improve the stability of photovoltaic module. Backsheet 205 can be a composite backsheet, for example, composed of fluorocarbon film, polyester film (PET), and adhesive. Backsheet 205 can also be a coated backsheet, for example, coated with fluororesin coating on PET base film. Backsheet 205 can also be a transparent backsheet.

[0083] Those skilled in the art will understand that the above embodiments are specific examples of implementing this disclosure, and in practical applications, various changes in form and detail may be made without departing from the spirit and scope of this disclosure. Any person skilled in the art can make various alterations and modifications without departing from the spirit and scope of this disclosure; therefore, the scope of protection of this disclosure should be determined by the scope defined in the claims.

Claims

1. A photovoltaic frame, comprising: The upper support part, the lower support part, the limiting part, the first side edge part, and the second side edge part; The upper support part and the lower support part are oppositely arranged, and the limiting part is located on a side of the upper support part away from the lower support part; the first side edge part connects the limiting part and the upper support part, and the upper support part, the first side edge part, and the limiting part form a clamping groove; and the second side edge part connects the upper support part and the lower support part. The limiting part is characterized in that a slot hole is formed in a bottom surface of the limiting part close to the upper support part, and the slot hole extends from a first end of the limiting part to a second end of the limiting part; the first end is close to the first side edge part, and the second end is away from the first side edge part.

2. The photovoltaic frame of claim 1, wherein, The photovoltaic frame further comprises a third side edge part connecting the upper support part and the lower support part; and the second side edge part, the upper support part, the third side edge part, and the lower support part form a cavity.

3. Photovoltaic frame according to claim 1 or 2, characterized in that The height of the slot hole is one-third to one-half of the thickness of the limiting part.

4. The photovoltaic frame of claim 3, wherein, The width of the slot hole is one-half to one times the thickness of the limiting part.

5. The photovoltaic frame of claim 4, wherein, The bottom surface of the limiting part is provided with a plurality of parallel slot holes; the distance between adjacent two slot holes is greater than or equal to the width of the slot hole.

6. The photovoltaic frame of claim 1, wherein, The first side edge part is provided with a plurality of parallel first protruding parts on a side close to the clamping groove.

7. The photovoltaic frame of claim 1, wherein, The surface of the upper support part away from the limiting part is provided with a plurality of second protruding parts, and the plurality of second protruding parts are arranged in a direction from the first end of the limiting part to the second end of the limiting part.

8. The photovoltaic frame of claim 2, wherein, The second side edge part connects an end of the upper support part away from the first side edge part. The photovoltaic frame further comprises a first extension; and the first extension extends from the connection between the upper support part and the second side edge part in a direction away from the first side edge part.

9. The photovoltaic frame of claim 8, wherein, The upper support part, the lower support part, the limiting part, the first side edge part, the second side edge part, the third side edge part, and the first extension are integrally formed.

10. A photovoltaic module comprising: The photovoltaic frame according to any one of claims 1-9; and a laminated piece at least partially located in the clamping groove; wherein the laminated piece comprises a panel, a first adhesive film, a cell piece, a second adhesive film, and a back plate which are sequentially stacked.

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