Encapsulation frame and photovoltaic module

Abstract

The utility model discloses a kind of packaging frame and photovoltaic module. Packaging frame includes frame main body, abutting member and limit piece, part outer surface of frame main body forms bearing surface, one end of abutting member is connected in bearing surface and other end connects limit piece, limit piece, abutting member and bearing surface are enclosed and form installation groove for installing the edge position of laminated member, wherein, bearing surface is used to support the back panel of laminated member, abutting member is used to abut on the end surface of laminated member back panel, limit piece is used to abut on the end surface of laminated member front panel and press on part back panel of laminated member;The maximum distance H1 between the top surface of limit piece and bearing surface is not greater than the thickness H2 of laminated member for being installed. The present application can reduce or avoid photovoltaic module light area ash.

Description

Technical Field

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

[0002] Photovoltaic technology has experienced strong growth in recent years, becoming a key area for the rapid development of the photovoltaic power generation industry due to its vast land area and abundant sunshine. In traditional technology, most photovoltaic modules have an A-side in their frame design to hold the edge of the front panel of the laminate. This A-side design makes it easy for dust to accumulate on the front of the photovoltaic module, leading to dust buildup after prolonged use. Dust accumulation can cause shading, resulting in decreased battery power generation efficiency, and in severe cases, it can accelerate surface wear and shorten the lifespan of the photovoltaic module. Dust accumulation is even more difficult to remove after being washed away by rainwater. Statistics show that dust accumulation is a problem in about 80% of usage scenarios; for example, when dust forms a 90mm wide mud band, it can cause about 23% power loss in the battery. Utility Model Content

[0003] Therefore, it is necessary to provide an encapsulation border.

[0004] One embodiment of this application provides an encapsulation border.

[0005] An encapsulation frame for mounting a laminate with a back panel edge protruding from the front panel edge, includes a frame body, an abutment, and a limiting member. A portion of the outer surface of the frame body forms a bearing surface. One end of the abutment is connected to the bearing surface, and the other end is connected to the limiting member. The limiting member, the abutment, and the bearing surface together form a mounting groove for mounting the edge of the laminate. The bearing surface supports the back panel of the laminate. The abutment abuts against the end face of the back panel of the laminate. The limiting member abuts against the end face of the front panel of the laminate and presses against the portion of the back panel of the laminate that protrudes from the front panel. The maximum distance H1 between the top surface of the limiting member and the bearing surface is not greater than the thickness H2 of the laminate to be mounted.

[0006] In some embodiments, the maximum distance between the top surface of the limiting member and the bearing surface is less than the thickness of the laminate, and the distance between the end of the top surface of the limiting member away from the abutment and the bearing surface is greater than the distance between the end of the limiting member closer to the abutment and the bearing surface.

[0007] In some embodiments, the maximum distance between the top surface of the limiting member and the bearing surface is 0-3 mm smaller than the thickness of the laminate.

[0008] In some embodiments, the width of the limiting member is 2mm to 7mm.

[0009] In some embodiments, the width of the limiting member is smaller than the width of the bearing surface.

[0010] In some embodiments, the width of the limiting member is equal to the distance between the edge of the back panel and the edge of the front panel on the laminate.

[0011] In some embodiments, the frame body, the abutment, and the limiting member are connected as a single unit.

[0012] In some embodiments, the limiting member has a limiting base connected to the abutment and a limiting protrusion connected to the limiting base, the minimum distance between the limiting protrusion and the bearing surface is not less than the thickness of the back panel on the laminate, and the limiting protrusion is used to press against a portion of the back panel of the laminate.

[0013] In some embodiments, the limiting protrusion is located at the end of the limiting base away from the abutment.

[0014] In some embodiments, the minimum distance between the limiting protrusion and the bearing surface is 0.6 mm to 1.5 mm greater than the thickness of the back panel on the laminate.

[0015] In some embodiments, the limiting protrusion includes a connecting portion and a bent portion, the connecting portion and the bent portion being integrally bent, the connecting portion being connected to the limiting base, the bent portion being connected to the connecting portion and extending toward the bottom surface of the mounting groove, an auxiliary receiving area for accommodating overflowed adhesive being formed between the bent portion, the connecting portion and the limiting base, the connecting portion and a portion of the limiting base being used together to abut against the end face of the front panel of the laminate, and the bent portion being used to press against a portion of the front panel of the laminate.

[0016] In some embodiments, the length of the bent portion extending toward the bottom surface of the mounting groove is not greater than the distance between the edge of the back panel and the edge of the front panel on the laminate.

[0017] In some embodiments, the extending direction of the bent portion and the limiting base are both parallel to the bearing surface.

[0018] In some embodiments, the outer surface of the connection position between the connecting portion and the bending portion has a curved chamfered structure.

[0019] In some embodiments, the connecting portion and the limiting base have an included angle of 80° to 110°, and preferably, the connecting portion is perpendicular to the limiting base.

[0020] In some embodiments, the surface of the abutment member located within the mounting groove has an abutment protrusion close to the bearing surface, the abutment protrusion being used to abut against at least a portion of the end face of the back panel of the laminate.

[0021] In some embodiments, the surface of the abutment located within the mounting groove has a pressing protrusion close to the limiting member, the pressing protrusion being used to assist adhesive overflow to the front panel of the laminate.

[0022] In some embodiments, the bearing surface has a plurality of overflow grooves.

[0023] In some embodiments, the inner wall of the overflow tank gradually narrows from the bottom surface of the overflow tank to the opening.

[0024] In some embodiments, the frame body has a corner code cavity for corner code embedding connection.

[0025] In some embodiments, the frame body includes a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall. The first sidewall, the second sidewall, the third sidewall, and the fourth sidewall are connected sequentially to make the frame body a hollow quadrangular prism structure. The outer surface of the first sidewall forms the bearing surface, and the abutment is connected to the first sidewall.

[0026] In some embodiments, the frame body is connected to a plurality of reinforcing ribs.

[0027] In some embodiments, the abutment is flush with the second sidewall and extends away from the second sidewall along the plane containing the second sidewall.

[0028] In some embodiments, the first sidewall, the second sidewall, the third sidewall, and the fourth sidewall are arranged perpendicularly to each other.

[0029] In some embodiments, at least one of the inner surfaces of the first sidewall, the second sidewall, the third sidewall, and the fourth sidewall is connected with a plurality of reinforcing ribs.

[0030] In some embodiments, the reinforcing rib extends from one sidewall to the other sidewalls.

[0031] In some embodiments, a support plate is connected at the junction of the second sidewall and the third sidewall, and the support plate extends outward away from the frame body along the plane of the third sidewall.

[0032] In some embodiments, the end of the first sidewall away from the second sidewall protrudes from the outer surface of the fourth sidewall.

[0033] In some embodiments, the frame body is a metal frame made of metal or alloy material, or a composite material frame made of composite material.

[0034] One embodiment of this application also provides a photovoltaic module.

[0035] A photovoltaic module includes a laminate and an encapsulation frame as described in any of the above embodiments. The laminate includes a back panel, a back adhesive film, a cell, a front adhesive film, and a front panel stacked sequentially. The edges of the back panel protrude beyond the edges of the front panel. The laminate is encapsulated by the encapsulation frame. A portion of the back panel of the laminate is located on the bearing surface. The end face of the back panel of the laminate can abut against the abutting member. The end face of the front panel of the laminate abuts against the limiting member. A portion of the back panel of the laminate abuts against the limiting member.

[0036] In some embodiments, the front panel and the back panel are each independently selected from photovoltaic glass panels.

[0037] The encapsulation frame of this invention can reduce or avoid dust accumulation on the light-receiving surface of photovoltaic modules, effectively maintain battery power generation efficiency, reduce or avoid surface wear of photovoltaic modules, and improve equipment lifespan. The encapsulation frame is equipped with a cooperating frame body, abutment, and limiting member for encapsulating the laminate. During encapsulation, the bearing surface supports the back side of the laminate's back panel, the abutment abuts against the end face of the back panel, and the limiting member abuts against the end face of the front panel. The maximum distance between the limiting member and the bearing surface is no greater than the thickness of the laminate. This design ensures that the front panel of the laminate is not higher than the limiting member after encapsulation, preventing dust and rain accumulation at the junction of the front panel and the limiting member during photovoltaic module use. Even if a small amount of dust accumulates, it can be quickly and thoroughly cleaned from the front panel by rainwater, leaving no residue. This reduces dust accumulation and hot spots while increasing photovoltaic module power generation, reducing module cleaning frequency to some extent, and ensuring profitability. Furthermore, this application uses a limiting member to press against a portion of the back panel of the laminate facing the light-receiving surface to achieve pressing and fixing of the laminate. By using the limiting member to restrain the back panel of the laminate, the mechanical load strength of the frame can be guaranteed to the maximum extent, so that the photovoltaic module has good outdoor practical reliability. By pressing the portion of the back panel of the laminate facing the light-receiving surface with the limiting member and by using the limiting member to abut and fix the end face of the front panel of the laminate, the breakage of the front panel during encapsulation can be avoided to the greatest extent. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0040] Figure 1 This is a schematic diagram of the packaging frame according to an embodiment of the present invention;

[0041] Figure 2 This is a schematic diagram of the laminate structure according to an embodiment of the present invention;

[0042] Figure 3 This is a schematic diagram of the encapsulation of the encapsulation frame and laminate portion according to an embodiment of the present invention;

[0043] Figure 4 This is a schematic diagram of the encapsulation frame and laminate encapsulation according to an embodiment of the present invention.

[0044] Explanation of reference numerals in the attached figures

[0045] 10. Photovoltaic module; 100. Encapsulation frame; 110. Frame body; 101. Bearing surface; 102. Glue overflow groove; 103. Corner code cavity; 111. First sidewall; 112. Second sidewall; 113. Third sidewall; 114. Fourth sidewall; 115. Reinforcing rib; 116. Support plate; 120. Abutting part; 121. Abutting protrusion; 122. Extrusion protrusion; 130. Limiting part; 131. Limiting base; 140. Mounting groove; 150. Limiting protrusion; 151. Connecting part; 152. Bending part; 153. Auxiliary receiving area; 200. Laminated part; 201. Back panel; 202. Back adhesive film; 203. Battery; 204. Front adhesive film; 205. Front panel. Detailed Implementation

[0046] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0047] In the description of this utility model, it should be understood that 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", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0048] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0050] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0052] In this document, "optionally," "optionally," and "optional" mean that something is optional, that is, it is selected from either "with" or "without." If multiple "options" appear in a technical solution, unless otherwise specified and there are no contradictions or mutual constraints, each "option" is independent. In this application, descriptions such as "optionally contains" and "optionally includes" indicate "contains or does not contain."

[0053] In this application, "light-receiving surface or front side" and "backlighting surface or back side" are used only to distinguish the positions of the two opposing surfaces of the battery substrate. In actual operating conditions, the "light-receiving surface" is the surface of the battery substrate that primarily receives light, but the "backlighting surface" does not necessarily not receive light. In fact, due to the presence of diffuse reflection, the "backlighting surface" can also receive light in actual operating conditions.

[0054] In this application, when numerical intervals (i.e., numerical ranges) are mentioned, unless otherwise specified, the distribution of selectable numerical values ​​within the numerical interval is considered continuous, and includes the two endpoints of the numerical interval (i.e., the minimum and maximum values), as well as every numerical value between these two endpoints. Unless otherwise specified, when a numerical interval refers only to integers within that numerical interval, it includes the two endpoint integers of the numerical range, as well as every integer between the two endpoints, which is equivalent to directly listing every integer. When multiple numerical ranges are provided to describe features or characteristics, these numerical ranges can be merged. In other words, unless otherwise specified, the numerical ranges disclosed in this application should be understood to include any and all subranges included therein. The "numerical value" in the numerical interval can be any quantitative value, such as a number, percentage, ratio, etc. The term "numerical interval" can be broadly included to include percentage intervals, ratio intervals, proportion intervals, etc.

[0055] This application provides an encapsulation frame to address the problems in the prior art where the frame of a photovoltaic module easily accumulates dust on the light-receiving area, leading to decreased battery efficiency and easy wear and tear on the module. The encapsulation frame will be described below with reference to the accompanying drawings.

[0056] The encapsulation border 100 provided in this application embodiment is exemplary; please refer to [link to example]. Figure 1 As shown, Figure 1This is a schematic diagram of the structure of the encapsulation frame 100 provided in an embodiment of this application. See also Figure 2 As shown, Figure 2 This is a schematic diagram of the structure of a laminate 200 according to an embodiment of the present invention. The encapsulation frame 100 of this application can be used for assembling the laminate 200.

[0057] To more clearly illustrate the structure of the package frame 100, the package frame 100 will be described below in conjunction with the accompanying drawings.

[0058] For example, please refer to Figure 1 As shown, an encapsulation frame 100 is used to mount a laminate 200 whose edge protrudes from the edge of the back panel 201 onto the edge of the front panel 205. The encapsulation frame 100 includes a frame body 110, an abutment 120, and a limiting member 130. A portion of the outer surface of the frame body 110 forms a bearing surface 101. One end of the abutment 120 is connected to the bearing surface 101, and the other end is connected to the limiting member 130. The limiting member 130, the abutment 120, and the bearing surface 101 form a mounting groove 140 for mounting the edge of the laminate 200. See also... Figure 3 As shown, Figure 3 This is a partial encapsulation diagram of the encapsulation frame 100 and the laminate 200 according to an embodiment of the present invention. See also Figure 4 As shown, Figure 4 This is a schematic diagram of the encapsulation of the encapsulation frame 100 and the laminate 200 according to an embodiment of the present invention. The bearing surface 101 is used to support the back panel 201 of the laminate 200. The abutment member 120 is used to abut against the end face of the back panel 201 of the laminate 200. The limiting member 130 is used to abut against the end face of the front panel 205 of the laminate 200 and press against the portion of the back panel 201 of the laminate 200 that protrudes from the front panel 205. The maximum distance H1 between the top surface of the limiting member 130 and the bearing surface 101 is not greater than the thickness H2 of the laminate 200 to be installed.

[0059] The aforementioned encapsulation frame 100 is provided with a frame body 110, an abutment 120, and a limiting member 130 that cooperate with each other to encapsulate the laminate 200. During encapsulation, the bearing surface 101 supports the backlight side of part of the back panel 201 of the laminate 200, the abutment 120 abuts against the end face of the back panel 201 of the laminate 200, and the limiting member 130 abuts against the end face of the front panel 205 of the laminate 200. The maximum distance between the limiting member 130 and the bearing surface 101 is no greater than the thickness of the laminate 200. This setting ensures that the front panel 205 of the laminate 200 after encapsulation is not higher than the limiting member 130. This prevents dust and rain from accumulating at the junction between the front panel 205 and the limiting member 130 when the photovoltaic module 10 is in use. Even if a small amount of dust accumulates, it can be quickly and thoroughly cleaned off the front panel 205 by rainwater and will not remain on the front panel 205. This reduces dust accumulation and hot spots, while also increasing the power generation of the photovoltaic module 10, reducing the frequency of module cleaning, and ensuring returns to a certain extent.

[0060] In this application, when the encapsulation frame 100 is used in the encapsulation laminate 200, multiple encapsulation frames 100 are used. Adjacent encapsulation frames 100 can be connected in a hinged manner. When the encapsulation frames 100 are connected in a hinged manner, the adjacent encapsulation frames 100 can be folded together, and the two encapsulation frames 100 at the last sealing point are connected by a snap-fit ​​to form a closed loop.

[0061] Furthermore, this application uses a limiting member 130 to press against a portion of the back panel 201 of the laminate 200 facing the light-receiving surface to achieve pressing and fixing of the laminate 200. By using the limiting member 130 to restrain the back panel 201 of the laminate 200, the mechanical load strength of the frame can be guaranteed to the maximum extent, so that the photovoltaic module 10 has good outdoor practical reliability. By pressing the portion of the back panel 201 of the laminate 200 facing the light-receiving surface with the limiting member 130 and by using the limiting member 130 to abut and fix the end face of the front panel 205 of the laminate 200, the breakage of the front panel 205 during encapsulation can be avoided to the greatest extent.

[0062] In some embodiments, the limiting member 130 is parallel to the bearing surface 101. Preferably, the outer surface of the limiting member 130 is a smooth surface or a sloping surface. When the outer surface of the limiting member 130 is a sloping surface, the height of the outer surface of the limiting member 130 from the bearing surface 101 gradually decreases from the side away from the abutment member 120 to the side closer to the abutment member 120, forming a sloping surface. This allows a small amount of dust accumulated on the front panel 205 to be washed away by rainwater, achieving the purpose of preventing dust accumulation.

[0063] In some embodiments, the maximum distance H1 between the top surface of the limiting member 130 and the bearing surface 101 is less than the thickness H2 of the laminate 200, and the distance between the end of the top surface of the limiting member 130 away from the abutment 120 and the bearing surface 101 is greater than the distance between the end of the top surface of the limiting member 130 closer to the abutment 120 and the bearing surface 101. It should be noted that, see [link to relevant documentation] Figure 1 As shown, the maximum distance H1 between the top surface of the limiting member 130 and the bearing surface 101 refers to the maximum distance between the top surface (i.e., the outward-facing surface) of the limiting member 130 and the bearing surface 101.

[0064] In some embodiments, the maximum distance H1 between the top surface of the limiting member 130 and the bearing surface 101 is 0-3 mm smaller than the thickness H2 of the laminate 200. This arrangement allows a small amount of dust accumulated on the front panel 205 to be washed away by rainwater, thus preventing dust accumulation.

[0065] In some embodiments, the frame body 110, the abutment 120, and the limiting member 130 are connected as an integral structure.

[0066] In some embodiments, the limiting member 130 has a limiting base 131 connected to the abutment member 120 and a limiting protrusion 150 connected to the limiting base 131. Preferably, the limiting protrusion 150 extends toward the bottom wall of the mounting groove 140. The minimum distance H3 between the limiting protrusion 150 and the bearing surface 101 is not less than the thickness H4 of the back panel 201 on the laminate 200. The limiting protrusion 150 is used to press against a portion of the back panel 201 of the laminate 200. When the limiting member 130 is provided with the limiting base 131, the limiting base 131 is parallel to the bearing surface 101.

[0067] This application uses a limiting protrusion 150 on the limiting member 130 to press against a portion of the back panel 201 of the laminate 200 facing the light-receiving surface to achieve pressing and fixing of the laminate 200. The use of the limiting protrusion 150 avoids the limiting member 130 from contacting the back panel 201 over a large area. By using the limiting protrusion 150 to restrain the back panel 201 of the laminate 200, the mechanical load strength of the frame can be guaranteed to the maximum extent, so that the photovoltaic module 10 has good outdoor practical reliability and avoids the front panel 205 from breaking during encapsulation.

[0068] In some embodiments, the minimum distance H3 between the limiting protrusion 150 and the bearing surface 101 is 0.6mm to 1.5mm larger than the thickness H4 of the back panel 201 on the laminate 200. This arrangement allows the back panel 201 of the laminate 200 to have a certain margin when moving in the area between the limiting protrusion 150 and the bearing surface 101, ensuring that the back panel 201 can move to a certain extent during encapsulation.

[0069] In some embodiments, the width W1 of the limiting member 130 is 2mm to 7mm. The value of the width W1 of the limiting member 130 includes, but is not limited to, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, or any range between the foregoing. It should be noted that when the limiting member 130 has a limiting protrusion 150, the width W1 of the limiting member 130 refers to the width of the limiting base 131. The width W1 of the limiting base 131 is its dimension along the width direction of the package edge.

[0070] In some embodiments, the width W1 of the limiting member 130 is smaller than the width W2 of the bearing surface 101. By setting the width of the limiting member 130 to be smaller than the width of the bearing surface 101, the laminations 200 with different widths for the front panel 205 and the back panel 201 are encapsulated.

[0071] In some embodiments, the width W1 of the limiting member 130 is equal to the distance W3 between the edge of the back panel 201 and the edge of the front panel 205 on the laminate 200. See also Figure 2 As shown, the edge of the back panel 201 on the laminate 200 protrudes beyond the edge of the front panel 205, and the distance by which the edge of the back panel 201 protrudes beyond the edge of the front panel 205 is W3. This configuration ensures that, after encapsulation, the laminate 200 is completely secured to the frame, with the abutment 120 abutting against the end face of the back panel 201 of the laminate 200 and the limiting member 130 abutting against the end face of the front panel 205 of the laminate 200. This minimizes the risk of the front panel 205 shattering during encapsulation.

[0072] In some embodiments, the limiting protrusion 150 is located at the end of the limiting base 131 away from the abutment 120. The limiting protrusion 150, located at the end away from the abutment 120, can both press against the protruding part of the back panel 201 and abut against the end face of the front panel 205, improving the sealing fit, reducing the gap between the frame and the laminate 200, and thus reducing dust accumulation.

[0073] In some embodiments, the limiting protrusion 150 includes a connecting portion 151 and a bent portion 152. The connecting portion 151 and the bent portion 152 are generally bent structures. For example, see... Figure 1As shown, the bent structure is approximately "J" shaped. Connecting portion 151 is connected to limiting base 131. Bending portion 152 is connected to connecting portion 151 and extends towards the bottom surface of mounting groove 140. An auxiliary receiving area 153 for accommodating overflowing adhesive is formed between bending portion 152, connecting portion 151, and limiting base 131. Connecting portion 151 and part of limiting base 131 together abut against the end face of front panel 205 of laminate 200, and bending portion 152 abuts against part of back panel 201 of laminate 200. Bending portion 152 can limit back panel 201, and the outer side of bending portion 152 away from abutting member 120 can abut against the end face of front panel 205, thus minimizing the risk of front panel 205 shattering during encapsulation.

[0074] In some embodiments, the length of the bend 152 extending toward the bottom surface of the mounting groove 140 is not greater than the distance W3 between the edge of the back panel 201 and the edge of the front panel 205 on the laminate 200.

[0075] In some embodiments, the extending direction of the bent portion 152 and the limiting base 131 are both parallel to the bearing surface 101. See also Figure 1 As shown, the surface of the bent portion 152 close to the bearing surface 101 is preferably designed as a flat surface, so that the bent portion 152 and the back panel 201 can have a larger contact area, which can play a role in distributing the force during mechanical load testing.

[0076] In some embodiments, the outer surface of the connection position between the connecting portion 151 and the bending portion 152 has a curved chamfered structure. The design of the outer surface of the connection position between the connecting portion 151 and the bending portion 152 with a curved chamfered structure makes it easier for the back panel 201 to be inserted into the mounting groove 140, thus improving installation convenience.

[0077] In some embodiments, the connecting portion 151 and the limiting base portion 131 have an included angle of 80° to 110°.

[0078] Preferably, the connecting portion 151 is perpendicular to the limiting base 131. The perpendicularity between the connecting portion 151 and the limiting base 131 can increase the contact area between the connecting portion 151 and the end face of the front panel 205, reduce the gap between them, and reduce dust accumulation.

[0079] In some embodiments, the surface of the abutment 120 located within the mounting groove 140 has an abutment protrusion 121. The abutment protrusion 121 is close to the bearing surface 101 and is used to abut against at least a portion of the end face of the back panel 201 of the fixed laminate 200.

[0080] In some embodiments, the surface of the abutment 120 located within the mounting groove 140 has a pressing protrusion 122. The pressing protrusion 122 is close to the retainer 130 and is used to assist adhesive overflow to the front panel 205 of the laminate 200.

[0081] In some embodiments, the bearing surface 101 has a plurality of adhesive overflow grooves 102. The adhesive overflow grooves 102 can hold a portion of the adhesive, thereby improving its adhesive strength and enhancing the connection between the back panel 201 and the bearing surface 101.

[0082] In some embodiments, the surface of the bearing surface 101 is generally planar, which can increase the contact area between the back panel 201 and the bearing surface 101 and improve the connection between the back panel 201 and the bearing surface 101.

[0083] In some embodiments, the inner wall of the overflow groove 102 gradually narrows from the bottom surface of the groove to the opening. This design enables the bonded parts after the adhesive has cured to form a structure that is larger inside and smaller outside, making it difficult for the bonded parts to detach from the overflow groove 102 and improving the connection between the back panel 201 and the bearing surface 101.

[0084] In some embodiments, the shape of the overflow groove 102 can be a regular shape or an irregular shape, such as a square groove, a circular groove, etc., and no specific limitation is made here.

[0085] In some embodiments, the number of slots in the overflow groove 102 is determined according to the width W2 of the bearing surface 101.

[0086] In some embodiments, the frame body 110 has a corner code cavity 103 for corner code embedding and connection. The shape of the corner code cavity 103 can be set as needed and is not specifically limited here. The corner code cavity 103 is used for corner code insertion to realize the connection between two adjacent encapsulation frames 100.

[0087] In some of these embodiments, see Figure 1 As shown, the frame body 110 includes a first sidewall 111, a second sidewall 112, a third sidewall 113, and a fourth sidewall 114. The first sidewall 111, the second sidewall 112, the third sidewall 113, and the fourth sidewall 114 are connected sequentially to give the frame body 110 a hollow quadrangular prism structure. The outer surface of the first sidewall 111 forms a bearing surface 101. The abutment member 120 is connected to the first sidewall 111.

[0088] In some of these embodiments, see Figure 1 As shown, the abutment 120 is flush with the second sidewall 112 and extends away from the second sidewall 112 along the plane where the second sidewall 112 is located.

[0089] In some embodiments, the first sidewall 111, the second sidewall 112, the third sidewall 113, and the fourth sidewall 114 are arranged perpendicularly to each other.

[0090] In some embodiments, a plurality of reinforcing ribs 115 are connected to the frame body 110.

[0091] In some embodiments, at least one of the inner surfaces of the first sidewall 111, the second sidewall 112, the third sidewall 113, and the fourth sidewall 114 is connected to a plurality of reinforcing ribs 115. The reinforcing ribs 115 can improve the strength of the frame body 110.

[0092] In some embodiments, the reinforcing rib 115 may be a protrusion, a protruding plate, or other structure.

[0093] In some embodiments, the reinforcing rib 115 may extend from one sidewall to the other sidewalls.

[0094] In some embodiments, a support plate 116 is connected at the junction of the second sidewall 112 and the third sidewall 113. The support plate 116 extends outward along the plane of the third sidewall 113 away from the frame body 110.

[0095] In some embodiments, the length and width of the first sidewall 111, the second sidewall 112, the third sidewall 113, and the fourth sidewall 114 can be set according to actual needs.

[0096] Preferably, the end of the first sidewall 111 away from the second sidewall 112 can protrude beyond the outer surface of the fourth sidewall 114, thus increasing the width W2 of the bearing surface 101 and thereby improving the load-bearing capacity of the bearing surface 101. The protruding portion of the first sidewall 111 is not shown in the accompanying drawings.

[0097] In some embodiments, the frame body 110 is a metal frame made of metal or alloy material, or a composite material frame made of composite material.

[0098] Preferably, the frame body 110 is a composite material frame made of composite materials. The materials of the composite material frame include polyurethane, glass fiber, etc., which have insulating properties. Therefore, the creepage distance of the photovoltaic module 10 using the composite material frame can theoretically be zero. To ensure that the battery cells 203 are not obstructed and considering the sealing of the encapsulant film, the size of the front panel 205 of the photovoltaic module 10 using the composite material frame in this application can be reduced. Compared with photovoltaic modules 10 of conventional technology, this application can effectively reduce the overall structural size. Here, creepage distance refers to the safe distance between the frame and charged bodies such as battery strings.

[0099] An embodiment of this application also provides a photovoltaic module 10.

[0100] A photovoltaic module 10 includes a laminate 200 and an encapsulation frame 100 as described in any of the above embodiments. See also Figure 2 As shown, the laminate 200 includes a back panel 201, a back adhesive film 202, a battery 203, a front adhesive film 204, and a front panel 205 stacked sequentially. The edges of the back panel 201 protrude beyond the edges of the front panel 205. The laminate 200 is encapsulated by an encapsulation frame 100. Part of the back panel 201 of the laminate 200 is located on the bearing surface 101. The end face of the back panel 201 of the laminate 200 can abut against the abutment member 120. The end face of the front panel 205 of the laminate 200 abuts against the limiting member 130. Part of the back panel 201 of the laminate 200 abuts against the limiting member 130. In this application, the edges of the back panel 201 protrude beyond the edges of the front panel 205. The staggered design of the edges of the back panel 201 and the front panel 205 enables the limiting member 130 to press and restrict the back panel 201. The limiting member 130 does not press the front panel 205 but abuts against the end face of the front panel 205. During mechanical load testing, the laminate 200 will not detach from the frame.

[0101] In some embodiments, when the limiting protrusion 150 is connected to the limiting member 130, the limiting protrusion 150 and the back panel 201 are in abutting engagement, specifically the bent portion 152 and the back panel 201 are in abutting engagement.

[0102] In some embodiments, the number of encapsulation frames 100 can be multiple. When there are multiple encapsulation frames 100, the end faces of adjacent encapsulation frames 100 can be mated with a 45° bevel to achieve a 90° angle splicing between adjacent encapsulation frames 100. During processing, the end faces of the encapsulation frames 100 can be cut to make the end faces of the encapsulation frames 100 have a 45° bevel.

[0103] In some embodiments, the lengths of the encapsulation border 100 may be equal or unequal. For example, the encapsulation border 100 may include a long border and a short border to fit the long and short sides of the laminate 200, respectively.

[0104] In some embodiments, the length of the encapsulation border 100 can be set according to the length or width of the laminate 200, and no specific limitation is made here.

[0105] In some embodiments, during encapsulation, adjacent encapsulation borders 100 can be connected by corner brackets, which can be inserted into the corner bracket cavities 103 of adjacent encapsulation borders 100.

[0106] In some embodiments, the adhesive used during encapsulation can be the glue used in the photovoltaic field, and no specific limitation is made here.

[0107] In some embodiments, the front panel 205 and the back panel 201 described above can be independently selected from photovoltaic glass panels.

[0108] Compared with traditional technologies, the encapsulation frame 100 of this utility model has the following beneficial effects:

[0109] (1) Airborne reliability: By using the limiting member 130, preferably the limiting protrusion 150, to restrain the back panel 201 of the laminate 200, the airborne load strength can be guaranteed to the maximum extent.

[0110] (2) Dust prevention: Based on the safety and reliability of the airborne load, the maximum height of the bearing surface 101 of the limiting component 130 is not higher than that of the front panel 205. Therefore, a small amount of dust on the front panel 205 can be more easily washed away by rainwater, thus achieving the purpose of dust prevention.

[0111] (3) Reduced cost: The width of the limiting member 130 and the height of the abutment member 120 relative to the bearing surface 101 are reduced, which reduces the amount of material used and has a certain cost reduction potential.

[0112] (4) Aesthetically pleasing appearance: The encapsulation frame 100 of this application is preferably made of composite material, which can be made of various colors such as black and dark blue, forming the same color as the battery 203, and has a better visual effect. Since this application reduces the size of the limiting member 130 and the abutment member 120, even if a metal frame made of metal or alloy material, such as an aluminum frame, is used, visual comfort can be improved.

[0113] In summary, the encapsulation frame 100 of this utility model can reduce or avoid dust on the light-receiving surface of the photovoltaic module 10, effectively maintain the power generation efficiency of the battery 203, reduce or avoid surface wear of the photovoltaic module 10, and improve the lifespan of the equipment.

[0114] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0115] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0116] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A packaging frame (100) for mounting a laminate (200) whose edge of a back panel (201) protrudes beyond the edge of a front panel (205), characterized in that, The device includes a frame body (110), an abutment (120), and a limiting member (130). A portion of the outer surface of the frame body (110) forms a bearing surface (101). One end of the abutment (120) is connected to the bearing surface (101), and the other end is connected to the limiting member (130). The limiting member (130), the abutment (120), and the bearing surface (101) together form a mounting groove (140) for mounting the edge of the laminate (200). The bearing surface (101) is used to support the laminate. The back panel (201) of the laminating component (200) is abutted against the end face of the back panel (201) of the laminating component (200), and the limiting member (130) is abutted against the end face of the front panel (205) of the laminating component (200) and presses against the portion of the back panel (201) of the laminating component (200) that protrudes from the front panel (205); the maximum distance H1 between the top surface of the limiting member (130) and the bearing surface (101) is not greater than the thickness H2 of the laminating component (200) to be installed.

2. The encapsulation frame (100) according to claim 1, characterized in that, The encapsulation border (100) also satisfies at least one of the following conditions: (1) The limiting member (130) is parallel to the bearing surface (101); (2) The maximum distance H1 between the top surface of the limiting member (130) and the bearing surface (101) is less than the thickness H2 of the laminate (200), and the distance between the end of the top surface of the limiting member (130) away from the abutment (120) and the bearing surface (101) is greater than the distance between the end of the limiting member (130) closer to the abutment (120) and the bearing surface (101); (3) The maximum distance H1 between the top surface of the limiting member (130) and the bearing surface (101) is 0~3mm smaller than the thickness of the laminate (200); (4) The width W1 of the limiting member (130) is 2mm~7mm; (5) The width W1 of the limiting member (130) is smaller than the width W2 of the bearing surface (101); (6) The width W1 of the limiting member (130) is equal to the distance W3 between the edge of the back panel (201) and the edge of the front panel (205) on the laminate (200); (7) The frame body (110), the abutment (120) and the limiting member (130) are connected in an integrated structure.

3. The encapsulation frame (100) according to claim 1, characterized in that, The limiting member (130) has a limiting base (131) connected to the abutment member (120) and a limiting protrusion (150) connected to the limiting base (131). The minimum distance H3 between the limiting protrusion (150) and the bearing surface (101) is not less than the thickness H4 of the back panel (201) on the laminate (200). The limiting protrusion (150) is used to press against a portion of the back panel (201) of the laminate (200).

4. The encapsulation frame (100) according to claim 3, characterized in that, The encapsulation border (100) also satisfies at least one of the following conditions: (1) The limiting protrusion (150) is located at the end of the limiting base (131) away from the abutment (120); (2) The minimum distance H3 between the limiting protrusion (150) and the bearing surface (101) is 0.6mm~1.5mm greater than the thickness H4 of the back panel (201) on the laminate (200).

5. The encapsulation frame (100) according to claim 3, characterized in that, The limiting protrusion (150) includes a connecting portion (151) and a bending portion (152). The connecting portion (151) and the bending portion (152) are generally bent. The connecting portion (151) is connected to the limiting base (131). The bending portion (152) is connected to the connecting portion (151) and extends toward the bottom surface of the mounting groove (140). An auxiliary receiving area (153) for receiving overflowed adhesive is formed between the bending portion (152), the connecting portion (151) and the limiting base (131). The connecting portion (151) and part of the limiting base (131) are used to abut against the end face of the front panel (205) of the laminate (200). The bending portion (152) is used to press against part of the front panel (205) of the laminate (200).

6. The encapsulation frame (100) according to claim 5, characterized in that, The encapsulation border (100) also satisfies at least one of the following conditions: (1) The length of the bent portion (152) extending toward the bottom surface of the mounting groove (140) is not greater than the distance W3 between the edge of the back panel (201) and the edge of the front panel (205) on the laminate (200); (2) The extension direction of the bent portion (152) and the limiting base (131) are both parallel to the bearing surface (101); (3) The outer surface of the connection position between the connecting part (151) and the bending part (152) has a curved chamfer structure; (4) The connecting part (151) and the limiting base (131) have an included angle of 80° to 110°.

7. The encapsulation frame (100) according to any one of claims 1 to 6, characterized in that, The encapsulation border (100) also satisfies at least one of the following conditions: (1) The surface of the abutment (120) located in the mounting groove (140) has an abutment protrusion (121), the abutment protrusion (121) being close to the bearing surface (101), and the abutment protrusion (121) being used to abut against at least a portion of the end face of the back panel (201) of the laminate (200); (2) The surface of the abutment (120) located in the mounting groove (140) has a pressing protrusion (122), the pressing protrusion (122) is close to the limiting member (130), and the pressing protrusion (122) is used to assist the adhesive to overflow to the front panel (205) of the laminate (200). (3) The bearing surface (101) has a plurality of overflow grooves (102); The inner wall of the overflow groove (102) gradually narrows from the bottom surface of the overflow groove (102) to the opening.

8. The encapsulation frame (100) according to any one of claims 1 to 6, characterized in that, The encapsulation border (100) also satisfies at least one of the following conditions: (1) The frame body (110) has a corner code cavity (103) for corner code embedding and connection. (2) The frame body (110) includes a first sidewall (111), a second sidewall (112), a third sidewall (113) and a fourth sidewall (114). The first sidewall (111), the second sidewall (112), the third sidewall (113) and the fourth sidewall (114) are connected in sequence to make the frame body (110) a hollow quadrangular prism structure. The outer surface of the first sidewall (111) forms the bearing surface (101). The abutment (120) is connected to the first sidewall (111). (3) Several reinforcing ribs (115) are connected to the frame body (110).

9. The encapsulation frame (100) according to any one of claims 1 to 6, characterized in that, The frame body (110) is a metal frame made of metal or alloy material, or a composite material frame made of composite material.

10. A photovoltaic module (10), characterized in that, The laminate (200) includes a laminate (200) and an encapsulation frame (100) as described in any one of claims 1 to 9. The laminate (200) includes a back panel (201), a back adhesive film (202), a battery (203), a front adhesive film (204), and a front panel (205) stacked sequentially. The edges of the back panel (201) protrude beyond the edges of the front panel (205). The laminate (200) is encapsulated by the encapsulation frame (100). A portion of the back panel (201) of the laminate (200) is located on the bearing surface (101). The end face of the back panel (201) of the laminate (200) can abut against the abutment (120). The end face of the front panel (205) of the laminate (200) abuts against the limiting member (130). A portion of the back panel (201) of the laminate (200) abuts against the limiting member (130).

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