Cavity-free frame and photovoltaic module

Abstract

The invention discloses a cavity-free frame and a photovoltaic module. The cavity-free frame comprises a frame body, an abutting part and a limiting part, the frame body comprises a bearing part, a supporting part, a mounting part and a reinforcing part, the bearing part and the mounting part are arranged in a spaced mode, the supporting part is arranged between the bearing part and the mounting part and connected to the bearing part and the mounting part, and the abutting part is arranged between the supporting part and the mounting part. The surface, away from the supporting part, of the bearing part forms a bearing face, one end of the reinforcing part is connected to the bearing part, the other end of the reinforcing part is connected to the supporting part, the abutting part is connected to the first end of the bearing part, and the limiting part is connected to the end, away from the bearing part, of the abutting part. A mounting groove used for mounting a laminated part is defined by the limiting part, the abutting part and the bearing surface, and a groove opening of the mounting groove faces the second end part. The material cost can be reduced.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic technology, and particularly to a cavityless frame and a photovoltaic module. Background Art

[0002] In the traditional design of the frame of a photovoltaic module, there is a clamping part (generally referred to as the A side of the frame) for clamping the edge position of the front panel of the laminate. The A side of the frame mainly serves to prevent the photovoltaic laminate from detaching, and its thickness is higher than that of the front glass. After the photovoltaic module is used outdoors for a long time, the A side of the frame can cause dust and rain accumulation on the front of the photovoltaic module, thereby affecting the normal power generation of the photovoltaic module. In addition, the aluminum frame in the traditional technology consists of two long frames and two short frames. The long frames and short frames respectively have cavities, and the long frame and the short frame are connected by inserting corner codes into their cavities. The frame used in the traditional technology requires corner codes, and the frame needs to be provided with cavities, resulting in a large amount of consumables and high material costs, which is not conducive to cost reduction and efficiency improvement. Summary of the Invention

[0003] Based on this, it is necessary to provide a cavityless frame. The cavityless frame of the present invention cancels the cavity structure and can be connected without corner codes, which can significantly reduce the material cost while maintaining the normal load of the cavityless frame, achieving the purpose of cost reduction and efficiency improvement.

[0004] An embodiment of the present application provides a cavityless frame.

[0005] A cavityless frame includes a frame body, a abutting member, and a limiting member. The frame body includes a bearing part, a supporting part, an installation part, and a strengthening part. The bearing part and the installation part are arranged at intervals. The supporting part is arranged between the bearing part and the installation part and is connected to the bearing part and the installation part. The surface of the bearing part away from the supporting part forms a bearing surface. One end of the strengthening part is connected to the bearing part and the other end is connected to the supporting part. The abutting member is connected to the first end portion. The limiting member is connected to the end of the abutting member away from the bearing part. An installation groove for installing a laminate is formed among the limiting member, the abutting member, and the bearing surface, and the notch of the installation groove faces the second end portion.

[0006] In some embodiments, the distance between the position where the strengthening part is connected to the bearing part and the position where the bearing part is connected to the supporting part is L1, and the width of the bearing part is D1, where L1≥1 / 4D1.

[0007] In some embodiments, L1 is 1 / 2D1~D1.

[0008] In some of these embodiments, the distance between the position where the reinforcing portion is connected to the supporting portion and the connection position of the bearing portion and the supporting portion is L2, and the height of the supporting portion is D2, where L2 ≤ 2 / 3D2.

[0009] In some of these embodiments, L2 is 1 / 3D2 to 2 / 3D2.

[0010] In some of these embodiments, the connection between the supporting portion and the bearing portion is in a circular arc transition.

[0011] In some of these embodiments, the connection between the supporting portion and the mounting portion is in a circular arc transition.

[0012] In some of these embodiments, the fillet radius R1 of the circular arc transition at the connection between the supporting portion and the bearing portion is between 0.25 and 2.

[0013] In some of these embodiments, the fillet radius R2 of the circular arc transition at the connection between the supporting portion and the mounting portion is between 0.25 and 2.

[0014] In some of these embodiments, the frame body further includes a thickening portion, the thickening portion is connected to the supporting portion, and the thickening portion protrudes from the surface of the supporting portion for the reinforcing portion to be connected.

[0015] In some of these embodiments, the end face of the first end of the supporting portion is flush with the end face of the bearing portion and one end face of the mounting portion. Preferably, the abutting member is flush with the supporting portion.

[0016] In some of these embodiments, the frame body further includes a connecting and mating portion, one end of the connecting and mating portion is connected to the supporting portion, the other end of the connecting and mating portion extends away from the supporting portion along the plane where the supporting portion is located, and this end is in a curled shape. The connecting and mating portion is used to realize the snap-fit connection between adjacent frame bodies.

[0017] In some of these embodiments, 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, the minimum distance H3 between the limiting member and the bearing surface is not less than the thickness H4 of the back panel on the laminate. The bearing surface is used to support a part of the back panel of the laminate, the abutting member is used to abut the end face of the back panel of the laminate, the end face of the limiting member is used to abut the end face of the front panel of the laminate, and the surface of the limiting member facing the bearing surface is used to press against a part of the back panel of the laminate.

[0018] One embodiment of the present application further provides a photovoltaic module.

[0019] A photovoltaic module includes a laminate and the cavity-free frame in any of the above embodiments. The laminate includes a back panel, a back adhesive film, a battery, a front adhesive film, and a front panel that are sequentially stacked. The laminate is encapsulated by the cavity-free frame. During encapsulation, the edge positions of the laminate are encapsulated in the mounting grooves of a plurality of the cavity-free frames.

[0020] In some embodiments, the edges of the back panel all protrude beyond the edges of the front panel. The laminate is encapsulated by the cavity-free frame. A part 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 end face of the limiting member, and a part of the back panel of the laminate abuts against the surface of the limiting member facing the bearing surface.

[0021] The above-mentioned cavity-free frame can significantly reduce the material cost while maintaining the normal load of the cavity-free frame, achieving the purpose of cost reduction and efficiency improvement. Specifically, in this application, the frame body is provided with a bearing part, a support part, a mounting part, and a strengthening part. The edge positions of the laminate are installed in the mounting groove formed between the limiting member, the abutting member, and the bearing surface. The support part is arranged between the bearing part and the mounting part and is connected to the bearing part and the mounting part. Compared with the traditional technology, this application cancels the cavity structure. In this application, the support part is directly used to connect between the bearing part and the mounting part, reducing one of the sides of the traditional frame. One end of the strengthening part is connected to the bearing part and the other end is connected to the support part to ensure the bearing load. Since this application cancels the cavity, there is no need for a corner code structure, and the length of the mounting part can be reduced and the height of the support part can be lowered, significantly reducing the material cost and achieving cost reduction and efficiency improvement. Further, since this application cancels the cavity, the foldable connection of adjacent cavity-free frames can be realized. A plurality of cavity-free frames are connected in a movable connection form. After the cavity-free frames are integrally folded, a special joint buckle can be used to achieve closed connection.

[0022] Further, the following settings are made for the cavityless frame: 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, and the minimum distance H3 between the limiting member and the bearing surface is not less than the thickness H4 of the back panel on the laminate. At this time, the cavityless frame can be adapted to the laminate with the width of the front panel smaller than that of the back panel. The abutting member abuts against the end face of the back panel of the laminate, and the end face of the limiting member abuts against the end face of the front panel of the laminate. The surface of the limiting member facing the bearing surface presses against a part of the back panel of the laminate. Such a setting can ensure that the front panel of the laminate after encapsulation is not higher than the limiting member. When the photovoltaic module is in use, it is not easy for dust and rain to accumulate at the junction between the front panel and the limiting member. Even if there is a small amount of dust accumulation, it can be quickly and thoroughly cleaned from the front panel under the washing of rainwater and will not remain on the front panel. While achieving the purpose of reducing dust accumulation and reducing hot spots, the power generation of the photovoltaic module can be increased, the cleaning frequency of the module can be reduced to a certain extent, and the revenue can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0024] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings. Among them, the same reference numerals represent the same parts in the following description.

[0025] Figure 1 Schematic diagram of the cavityless frame according to an embodiment of the present invention;

[0026] Figure 2 Schematic diagram of the laminate structure according to an embodiment of the present invention;

[0027] Figure 3 Schematic diagram of the encapsulation of the cavityless frame and the laminate according to an embodiment of the present invention;

[0028] Figure 4 Schematic diagram of the cavityless frame according to another embodiment of the present invention;

[0029] Figure 5 Schematic diagram of the cooperation of the cavityless frame according to another embodiment of the present invention.

[0030] Description of the reference numerals

[0031] 10. Photovoltaic module; 100. Cavity-free frame; 110. Frame body; 111. Load-bearing part; 112. Support part; 113. Mounting part; 114. Reinforcement part; 115. Thickening part; 101. Load-bearing surface; 102. Glue overflow groove; 120. Abutment member; 121. Abutment convex part; 122. Extrusion convex part; 130. Limiting member; 131. Limiting base; 140. Mounting groove; 150. Limiting protrusion; 151. Connecting part; 152. Bending part; 153. Auxiliary accommodating area; 160. Connecting and matching part; 170. Make way area; 180. Pointed structure; 200. Laminated part; 201. Back panel; 202. Back adhesive film; 203. Battery; 204. Front adhesive film; 205. Front panel. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0036] In the description of the present invention, the meaning of "several" is more than one, the meaning of "multiple" is more than two, and understandings such as "greater than", "less than", "exceeding", etc. do not include the recited number, and understandings such as "above", "below", "within", etc. include the recited number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0038] In this document, "optionally", "optional", "option" mean that it is optional, that is, it refers to any one of the two parallel options of "having" or "not having". If "optional" appears in multiple places in a technical solution, unless otherwise specified and there is no contradiction or mutual restriction relationship, each "optional" is independent of each other. In this application, descriptions such as "optionally contain" and "optionally include" mean "contain or not contain".

[0039] In this application, "the light-receiving surface or the front surface" and "the backlight surface or the back surface" are only used to distinguish the setting positions of the two opposite surfaces of the battery substrate in terms of name. In actual working conditions, the "light-receiving surface" is the surface of the battery substrate that mainly receives light, but the "backlight surface" does not necessarily not receive light. In fact, due to the existence of diffuse reflected light, etc., the "backlight surface" can also receive light irradiation in actual working conditions.

[0040] In this application, when it comes to numerical intervals (i.e., numerical ranges), unless otherwise specified, the distribution of the selectable numerical values within the numerical interval is considered continuous, and includes the two numerical endpoints of the numerical interval (i.e., the minimum value and the maximum value), as well as each numerical value between these two numerical endpoints. Unless otherwise specified, when the numerical interval only refers to the integers within the numerical interval, it includes the two endpoint integers of the numerical range, as well as each integer between the two endpoints, which is equivalent to directly listing each integer. When multiple numerical ranges are provided to describe features or characteristics, these numerical ranges can be combined. In other words, unless otherwise specified, the numerical ranges disclosed in this application should be understood to include any and all sub-ranges subsumed therein. The "numerical values" in the numerical interval can be any quantitative values, such as numbers, percentages, ratios, etc. The "numerical interval" is allowed to broadly include quantitative intervals such as percentage intervals, ratio intervals, and ratio value intervals.

[0041] An embodiment of this application provides a cavityless frame to solve at least one of the following technical problems existing in photovoltaic modules in the prior art: (1) After long-term outdoor use, photovoltaic modules will have problems of dust accumulation and rain accumulation, which will affect the normal power generation of photovoltaic modules; (2) The aluminum frames in traditional technologies are composed of two long frames, two short frames, and corner codes. The frame has a large amount of consumables and high material costs, which is not conducive to cost reduction and efficiency improvement. The cavityless frame will be described below with reference to the accompanying drawings.

[0042] Exemplarily, please refer to Figure 1 as shown Figure 1 is a schematic structural diagram of the cavityless frame provided by the embodiment of this application. The cavityless frame of this application can be used for laminating and encapsulating to form a photovoltaic module.

[0043] To more clearly illustrate the structure of the cavityless frame, the cavityless frame will be introduced below with reference to the accompanying drawings.

[0044] Exemplarily, please refer to Figure 1As shown in the figure, a cavityless frame 100 includes a frame body 110, a contact member 120, and a limiting member 130. The frame body 110 includes a bearing portion 111, a support portion 112, a mounting portion 113, and a strengthening portion 114. The bearing portion 111 and the mounting portion 113 are arranged at intervals. The support portion 112 is disposed between the bearing portion 111 and the mounting portion 113 and is connected to the bearing portion 111 and the mounting portion 113. A bearing surface 101 is formed on the surface of the bearing portion 111 away from the support portion 112. One end of the strengthening portion 114 is connected to the bearing portion 111 and the other end is connected to the support portion 112. The contact member 120 is connected to the first end portion of the bearing portion 111. The limiting member 130 is connected to one end of the contact member 120 away from the bearing portion 111. An installation groove 140 for installing the laminate 200 is defined among the limiting member 130, the contact member 120, and the bearing surface 101, and the notch of the installation groove 140 faces the second end portion of the bearing portion 111.

[0045] The above-mentioned cavityless frame 100 can significantly reduce the material cost while maintaining the normal load of the cavityless frame 100, achieving the purpose of cost reduction and efficiency improvement. Specifically, in the present application, the frame body 110 is provided with a bearing portion 111, a support portion 112, a mounting portion 113, and a strengthening portion 114. The edge position of the laminate 200 is installed in the installation groove 140 defined among the limiting member 130, the contact member 120, and the bearing surface 101. The support portion 112 is disposed between the bearing portion 111 and the mounting portion 113 and is connected to the bearing portion 111 and the mounting portion 113. Compared with the traditional technology, the cavity structure is cancelled in the present application. In the present application, the support portion 112 is directly used to connect between the bearing portion 111 and the mounting portion 113, reducing one of the sides of the traditional frame. One end of the strengthening portion 114 is connected to the bearing portion 111 and the other end is connected to the support portion 112 to ensure the bearing load. Since the cavity is cancelled in the present application, the corner code structure is not required in the present application, and the length of the mounting portion 113 can be reduced and the height of the support portion 112 can be lowered, significantly reducing the material cost and achieving cost reduction and efficiency improvement.

[0046] In the present application, after the strengthening portion 114 connects the bearing portion 111 and the support portion 112, a triangular support is formed to strengthen the support effect and increase the load of the bearing portion 111. Refer to Figure 1 As shown in the figure, after the present application uses the support portion 112 to support the bearing portion 111, correspondingly, the contact member 120, the support portion 112, the end face of the first end portion of the bearing portion 111, and the end face of one end portion of the mounting portion 113 can be flush in the vertical direction. Preferably, the length of the mounting portion 113 is slightly larger than the length of the bearing portion 111.

[0047] The cavity-free frame 100 of the present application uses multiple cavity-free frames 100 when encapsulating the laminate 200, wherein adjacent cavity-free frames 100 can be connected in a hinged manner. When adjacent cavity-free frames 100 are connected in a hinged manner, the adjacent cavity-free frames 100 can be folded and gathered, and a snap connection is used between the two cavity-free frames 100 that are finally sealed to form a closed loop.

[0048] In some embodiments, the frame body 110 , the abutting member 120 , and the limiting member 130 are connected to form an integrated structure.

[0049] In some embodiments, the support portion 112 is a plate-shaped structure as a whole, and the support portion 112 has no cavity structure.

[0050] In some embodiments, the distance between the position where the reinforcing portion 114 is connected to the bearing portion 111 and the position where the bearing portion 111 and the supporting portion 112 are connected is L1, and the width of the bearing portion 111 is D1, wherein L1 ≥ 1 / 4D1. It should be noted that the width D1 of the bearing portion 111 refers to the distance from the edge position of the bearing portion 111 to the middle position of the laminate 200 after the cavity-free frame 100 is matched with the laminate 200.

[0051] In some embodiments, L1 is 1 / 2D1 to D1. The position where the reinforcing portion 114 is connected to the bearing portion 111 is in accordance with the above restrictions, which can ensure that the reinforcing portion 114 effectively supports the bearing portion 111.

[0052] In some embodiments, the distance between the position where the reinforcing portion 114 is connected to the supporting portion 112 and the position where the bearing portion 111 and the supporting portion 112 are connected is L2. The height of the supporting portion 112 is D2. Wherein, L2≤2 / 3D2. The height of the supporting portion 112 is also the distance between the supporting portion 112 and the mounting portion 113.

[0053] In some embodiments, L2 is 1 / 3D2 to 2 / 3D2. The position where the reinforcing portion 114 is connected to the supporting portion 112 is in accordance with the above restrictions, which can ensure that the reinforcing portion 114 has an effective force point on the supporting portion 112 and improve the supporting strength of the reinforcing portion 114 on the bearing portion 111.

[0054] In some embodiments, the connection between the supporting portion 112 and the carrying portion 111 is in an arc transition.

[0055] In some embodiments, the connection between the support portion 112 and the mounting portion 113 is in an arc transition.

[0056] In some of these embodiments, the fillet radius R1 of the arc transition at the connection between the support portion 112 and the bearing portion 111 is between 0.25 and 2. The above setting can increase the load of the bearing portion 111.

[0057] In some of these embodiments, the fillet radius R2 of the arc transition at the connection between the support portion 112 and the mounting portion 113 is between 0.25 and 2. The above setting can increase the stability of the support portion 112 and increase the load on the bearing portion 111.

[0058] In some of these embodiments, the frame body 110 further includes a thickening portion 115. The thickening portion 115 is connected to the support portion 112, and the thickening portion 115 protrudes from the surface of the support portion 112 for connecting the strengthening portion 114. The thickening portion 115 can improve the support strength of the support portion 112 and increase the load of the entire cavityless frame 100.

[0059] In some of these embodiments, the thickening portion 115 has a certain length L3 on the support portion 112. Therefore, the length L3 of the thickening portion 115 is 1 / 3 to 1 / 2 of the height D2 of the support portion 112.

[0060] Preferably, referring to Figure 1 as shown, the thickening portion 115 is located at the middle position in the height direction of the support portion 112.

[0061] In some of these embodiments, referring to Figure 1 and 3 as shown, one of the connection positions of one end of the strengthening portion 114 falls on the central position of the bearing portion 111 and can be fine-tuned according to the actual situation. The connection position of the other end of the strengthening portion 114 falls on the thickening portion 115 of the support portion 112. Preferably, the connection position of the other end of the strengthening portion 114 on the thickening portion 115 can be arbitrarily selected. After the connection position of the other end of the strengthening portion 114 is located on the thickening portion 115, the bearing portion 111 can be effectively supported.

[0062] In some of these embodiments, the end face of the first end of the support portion 112 is flush with the end face of the bearing portion 111 and the end face of one end of the mounting portion 113. Specifically, the end face of the first end of the support portion 112 is flush with the end face of the bearing portion 111 and the end face of the third end of the mounting portion 113. Preferably, the abutting member 120 is flush with the support portion 112. Referring to Figure 1 as shown in the angle, the left side of the bearing portion 111 is the first end, and the right side is the second end. The left side of the mounting portion 113 is the third end, and the right side is the fourth end.

[0063] The present application eliminates the cavity, so that adjacent cavity-free frames 100 can be foldably connected. Several cavity-free frames 100 are connected in the form of active connection, such as hinge connection, so that adjacent cavity-free frames 100 can be folded. After being folded as a whole, several cavity-free frames 100 can be closed and connected using a special joint buckle to achieve packaging of the laminate 200.

[0064] In some of these embodiments, see Figure 4 As shown, Figure 4 This is a schematic diagram of a cavity-free frame 100 according to another embodiment of the present invention. The frame body 110 further includes a connection fitting portion 160. One end of the connection fitting portion 160 is connected to the support portion 112, and the other end of the connection fitting portion 160 extends away from the support portion 112 along the plane where the support portion 112 is located, and the end portion is in a curled shape. The connection fitting portion 160 is used to realize the connection between the adjacent frame bodies 110 and the connection buckle fitting. Figure 5 As shown, Figure 5 This is a schematic diagram of another embodiment of the present invention when the cavity-free frame 100 is mated. After the adjacent cavity-free frames 100 are butted, the adjacent connection and matching parts 160 are brought close together. Since the ends of the connection and matching parts 160 facing outward are curled, there is a certain concave yielding area 170 between the adjacent connection and matching parts 160. The yielding area 170 is used for snap-in insertion to achieve the snap connection of two adjacent connection and matching parts 160.

[0065] In some of the embodiments, when the connecting mating portion 160 is provided, the following adaptive structural adjustments can be made: Figure 5 As shown, along the length direction of the frame body 110, the two end faces of the bearing portion 111 and the front and rear end faces of the support portion 112 are cut, so that the two end faces of the bearing portion 111 and the two end faces of the support portion 112 are respectively pointed structures 180, and the edges of the pointed structures 180 are at an angle of 90°. The length direction of the frame body 110 refers to the direction in which the length direction of the frame body 110 is parallel to the edge corresponding to the laminate 200 after the laminate 200 is packaged.

[0066] During cutting, the two end faces of the bearing portion 111 and the two end faces of the supporting portion 112 are cut. After cutting, a pointed structure 180 with a 90° bending structure is formed. After the pointed structures 180 of adjacent cavity-free frames 100 are spliced, the edges of the two pointed structures 180 facing each other fit together, and the outward edges of the two pointed structures 180 are flush. This arrangement can provide a curling space for the connecting and matching portion 160. The lengths of the two edges of the pointed structure 180 can be set correspondingly according to the width of the frame body 110, so as to achieve the splicing and alignment of the adjacent frame bodies 110.

[0067] In some of these embodiments, the length of the connection and cooperation portion 160 satisfies the following condition: after adjacent cavity-free frame borders 100 are butted, there is a certain gap between adjacent connection and cooperation portions 160, and a partial position of the buckle is configured to be inserted into this gap.

[0068] In some of these embodiments, the connection and cooperation portion 160 can be prepared synchronously during the machining and cutting process at the end of the cavity-free frame border 100. During cutting, a partial position is reserved to form the above-mentioned connection and cooperation portion 160.

[0069] In some of these embodiments, 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, the width W1 of the limiting member 130 is less than the width W2 of the bearing surface 101, the minimum distance H3 between the limiting member 130 and the bearing surface 101 is not less than the thickness H4 of the back panel 201 on the laminate 200. The bearing surface 101 is used to support a part of the back panel 201 of the laminate 200. The abutting member 120 is used to abut against the end face of the back panel 201 of the laminate 200. The end face of the limiting member 130 is used to abut against the end face of the front panel 205 of the laminate 200. The surface of the limiting member 130 facing the bearing surface 101 is used to press against a part of the back panel 201 of the laminate 200.

[0070] The above-mentioned cavity-free frame border 100 is configured as follows: 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, the width W1 of the limiting member 130 is less than the width W2 of the bearing surface 101, the minimum distance H3 between the limiting member 130 and the bearing surface 101 is not less than the thickness H4 of the back panel 201 on the laminate 200. At this time, the cavity-free frame border 100 can be adapted to the laminate 200 with the width of the front panel 205 less than the width of the back panel 201. Refer to the laminate 200 shown in Figure 2 The abutting member 120 abuts against the end face of the back panel 201 of the laminate 200, the end face of the limiting member 130 abuts against the end face of the front panel 205 of the laminate 200, and the surface of the limiting member 130 facing the bearing surface 101 presses against a part of the back panel 201 of the laminate 200. With such a configuration, it can be achieved that the front panel 205 of the laminate 200 after encapsulation is not higher than the limiting member 130. When the photovoltaic module 10 is in use, the junction between the front panel 205 and the limiting member 130 is not prone to dust and rain accumulation. Even if there is a small amount of dust accumulation, it can be quickly and thoroughly cleaned from the front panel 205 under the washing of rainwater and will not remain on the front panel 205. While achieving the purpose of reducing dust accumulation and reducing hot spots, the power generation of the photovoltaic module 10 can be increased, the cleaning frequency of the module can be reduced to a certain extent, and the benefits can be guaranteed.

[0071] In some of these 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 slope surface. When the outer surface of the limiting member 130 is a slope 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 abutting member 120 to the side close to the abutting member 120, forming a slope surface. In this way, a small amount of dust accumulation on the front panel 205 can flow away with the scouring of rainwater, achieving the purpose of preventing dust accumulation.

[0072] In some of these 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 limiting member 130 away from the abutting member 120 and the bearing surface 101 is greater than the distance between the end of the limiting member 130 close to the abutting member 120 and the bearing surface 101. It should be noted that, as shown in Figure 1 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 outer surface of the limiting member 130 and the bearing surface 101.

[0073] In some of these embodiments, the maximum distance H1 between the top surface of the limiting member 130 and the bearing surface 101 is 0 to 3 mm less than the thickness H2 of the laminate 200. With such a setting, the height of the limiting member 130 is slightly smaller than or flush with the height of the laminate 200, and a small amount of dust accumulation on the front panel 205 can flow away with the scouring of rainwater, achieving the purpose of preventing dust accumulation.

[0074] In some of these embodiments, the limiting member 130 includes a limiting base portion 131 connected to the abutting member 120 and a limiting protrusion 150 connected to the limiting base portion 131. The minimum distance H5 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. At this time, the minimum distance H3 between the limiting member 130 and the bearing surface 101 only needs to be greater than the minimum distance H5 between the limiting protrusion 150 and the bearing surface 101. When the limiting member 130 is provided with the limiting protrusion 150, the limiting protrusion 150 is used to press against a part of the back panel 201 of the laminate 200. When the limiting member 130 has the limiting base portion 131, the limiting base portion 131 is parallel to the bearing surface 101.

[0075] In some of these embodiments, the minimum distance H5 between the limiting protrusion 150 and the bearing surface 101 is 0.6 mm to 1.5 mm greater than the thickness H4 of the back panel 201 on the laminate 200. With such a setting, there is a certain margin when the back panel 201 of the laminate 200 moves within 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.

[0076] In some of these embodiments, the width W1 of the limiting member 130 is 2 mm to 7 mm. The values of the width W1 of the limiting member 130 include, but are not limited to: 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, or the range between any two of the foregoing.

[0077] In some of these 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. Refer to Figure 2 As shown, the edge of the back panel 201 on the laminate 200 protrudes more than the edge of the front panel 205, and the distance by which the edge of the back panel 201 protrudes more than the edge of the front panel 205 is W3. With the above arrangement, after encapsulation, the edge position of the laminate 200 can be completely clamped in the frame, achieving a state where the abutting member 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. During encapsulation, the bursting of the front panel 205 can be avoided to the greatest extent.

[0078] It should be noted that when the limiting member 130 includes the 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 cavity-free frame.

[0079] In some of these embodiments, the width W1 of the limiting member 130 is less than the width W2 of the bearing surface 101. By setting the width of the limiting member 130 to be less than the width of the bearing surface 101, the encapsulation of the laminate 200 with different widths of the front panel 205 and the back panel 201 is achieved.

[0080] In some of these embodiments, the limiting protrusion 150 is located at one end of the limiting member 130 away from the abutting member 120. The limiting protrusion 150 is provided at one end away from the abutting member 120. On the one hand, it can achieve the pressing of the protruding part of the back panel 201, and on the other hand, it can also achieve the abutment against the end face of the front panel 205, improving the encapsulation fit, reducing the gap between the frame and the laminate 200, and achieving the purpose of reducing dust accumulation.

[0081] In some of these embodiments, the limiting protrusion 150 includes a connecting portion 151 and a bending portion 152. The connecting portion 151 and the bending portion 152 are integrally in a bent structure. For example, refer to Figure 1As shown, the bending structure is approximately in the shape of a "J". The connecting portion 151 is connected to the limiting base portion 131. The bending portion 152 is connected to the connecting portion 151 and the bending portion 152 extends in the direction of the bottom surface of the mounting groove 140. An auxiliary accommodating area 153 for accommodating the overflow adhesive is formed between the bending portion 152, the connecting portion 151, and the limiting base portion 131. The connecting portion 151 and a part of the limiting base portion 131 are jointly used to abut against the end surface of the front panel 205 of the laminate 200, and the bending portion 152 is used to press against a part of the front panel 205 of the laminate 200. The bending portion 152 can limit the front panel 205, and the outer side surface of the bending portion 152 away from the abutting member 120 can be used to abut against the end surface of the front panel 205, so as to maximize the avoidance of the explosion and fragmentation of the front panel 205 during encapsulation.

[0082] In some embodiments, the length of the bending portion 152 extending in the direction of 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.

[0083] In some embodiments, the extending direction of the bending portion 152 and the limiting base portion 131 are both parallel to the bearing surface 101. Refer to Figure 1 As shown, the surface of the bending portion 152 close to the bearing surface 101 is preferably designed as a plane, so that a larger contact area between the bending portion 152 and the back panel 201 can be achieved, and the force can be decomposed during the mechanical load test.

[0084] In some embodiments, the outer surface at the connection position between the connecting portion 151 and the bending portion 152 has a curved chamfer structure. The design of the outer surface at the connection position between the connecting portion 151 and the bending portion 152 with a curved chamfer structure is more conducive to the back panel 201 being snapped into the mounting groove 140, improving the installation convenience.

[0085] In some embodiments, the included angle between the connecting portion 151 and the limiting base portion 131 is 80° - 110°.

[0086] Preferably, the connecting portion 151 is perpendicular to the limiting base portion 131. The perpendicularity of the connecting portion 151 and the limiting base portion 131 can increase the contact area between the connecting portion 151 and the end surface of the front panel 205, reduce the gap between the two, and reduce dust accumulation.

[0087] In some embodiments, the surface of the abutting member 120 located in the mounting groove 140 has an abutting convex portion 121. The abutting convex portion 121 is close to the bearing surface 101, and the abutting convex portion 121 is used to abut and fix at least a part of the end surface of the back panel 201 of the laminate 200.

[0088] In some of these embodiments, the surface of the abutting member 120 located within the mounting groove 140 has an extrusion convex portion 122. The extrusion convex portion 122 is close to the limiting member 130, and the extrusion convex portion 122 is used to assist the adhesive to overflow to the front panel 205 of the laminate 200.

[0089] In some of these embodiments, the bearing surface 101 has a plurality of glue overflow grooves 102. The glue overflow grooves 102 can accommodate a part of the adhesive, improve its adhesive force, and improve the connection firmness between the back panel 201 and the bearing surface 101.

[0090] In some of these embodiments, the surface of the bearing surface 101 is generally planar, so that the contact area between the back panel 201 and the bearing surface 101 can be increased, and the connection firmness between the back panel 201 and the bearing surface 101 can be improved.

[0091] In some of these embodiments, the inner wall of the glue overflow groove 102 gradually narrows from the bottom surface of the glue overflow groove 102 to the groove opening. With such a setting, it is possible to make the bonded part after the adhesive is cured form a structure with a large inner and a small outer, and the bonded part is not easy to break away from the glue overflow groove 102, thereby improving the connection firmness between the back panel 201 and the bearing surface 101.

[0092] In some of these embodiments, the shape of the groove opening of the glue overflow groove 102 can be a regular shape or an irregular shape, such as a square groove opening, a circular groove opening, etc., and no specific limitation is made here.

[0093] In some of these embodiments, the number of groove openings of the glue overflow groove 102 is determined according to the width W2 of the bearing surface 101.

[0094] In some of these embodiments, the frame body 110 is a metal frame made of a metal material or an alloy material, or a composite frame made of a composite material.

[0095] Preferably, the frame body 110 is a composite frame made of a composite material. The materials of the composite frame include polyurethane, glass fiber, etc. The above materials have insulation properties. Therefore, the creepage distance theory of the photovoltaic module 10 using the composite frame can be zero. In order to ensure that the battery 203 cells cannot be blocked and considering the sealing performance of the glue film, the size of the front panel 205 of the photovoltaic module 10 using the composite frame in this application can be effectively reduced. Compared with the photovoltaic module 10 of the traditional technology, the overall structural size of this application can be effectively reduced. Among them, the creepage distance refers to the safety distance between the frame and the live bodies such as the battery string.

[0096] An embodiment of the present application also provides a photovoltaic module 10.

[0097] A photovoltaic module 10 includes a laminate 200 and the cavityless frame 100 in any of the above embodiments. Refer to Figure 2 as shown Figure 2 FIG. Figure 2 is a schematic structural diagram of the laminate 200 according to an embodiment of the present invention. 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 that are sequentially stacked. The laminate 200 is encapsulated by the cavityless frame 100. During encapsulation, the edge position of the laminate 200 is encapsulated in the mounting groove 140 of the cavityless frame 100.

[0098] In some embodiments, refer to Figure 2 the laminate 200 as shown. The edges of the back panel 201 protrude from the edges of the front panel 205, and the distance W3 between the edge of the back panel 201 and the edge of the front panel 205 on the laminate 200. Refer to Figure 3 as shown Figure 3 FIG. Figure 3 is a schematic diagram of the encapsulation of the cavityless frame 100 and the laminate 200 according to an embodiment of the present invention. The laminate 200 is encapsulated by the cavityless frame 100. A 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 abutting member 120. The end face of the front panel 205 of the laminate 200 abuts against the end face of the limiting member 130. A part of the back panel 201 of the laminate 200 abuts against the surface of the limiting member 130 facing the bearing surface 101.

[0099] In some embodiments, when the limiting member 130 includes a limiting protrusion 150, the limiting protrusion 150 is in pressing fit with the back panel 201, specifically, the bending portion 152 is in pressing fit with the back panel 201. The connecting portion 151 and a part of the limiting base portion 131 are jointly used to abut against the end face of the front panel 205 of the laminate 200, and the bending portion 152 is used to press against a part of the back panel 201 of the laminate 200. The bending portion 152 can limit the back panel 201, and the outer side surface of the bending portion 152 away from the abutting member 120 can be used to abut against the end face of the front panel 205, so as to maximally avoid the front panel 205 from bursting during encapsulation.

[0100] In some embodiments, the number of the cavityless frames 100 can be multiple. When the number of the cavityless frames 100 is multiple, the end faces of adjacent cavityless frames 100 can be fitted and docked by using inclined surfaces to achieve a 90° angle splicing between adjacent cavityless frames 100. During processing, the end faces of the cavityless frames 100 can be cut so that the end faces of the cavityless frames 100 are 45° inclined surfaces, which is convenient for splicing.

[0101] In some of these embodiments, the lengths of the cavityless frame 100 may be equal or unequal. For example, the cavityless frame 100 includes long frames and short frames to respectively fit the long sides and short sides of the laminate 200.

[0102] In some of these embodiments, the length of the cavityless frame 100 may be set according to the length or width of the laminate 200, and no specific limitation is made here.

[0103] In some of these embodiments, during encapsulation, the adhesive used in the mounting groove 140 may be the glue used in the photovoltaic field, and no specific limitation is made here.

[0104] In some of these embodiments, the above-mentioned front panel 205 and back panel 201 may be independently selected from photovoltaic glass plates respectively.

[0105] In summary, compared with the traditional technology, the cavityless frame 100 of the present application has the following beneficial effects:

[0106] (1) Cost reduction: The present application cancels the cavity structure, does not require the use of corner codes, and the material of the frame body 110 reduces one side wall, and the sizes of other side walls such as the support portion 112 and the mounting portion 113 can be reduced. On the basis of ensuring the load through structural optimization, the materials of non-critical parts are effectively reduced, realizing the cost reduction of the frame materials.

[0107] (2) Airborne reliability: By using the limiting member 130 or the limiting protrusion 150 to restrain the back panel 201 of the laminate 200, the airborne load strength can be maximally guaranteed.

[0108] (3) Dust prevention: Based on the safety and reliability of the airborne load, the maximum height of the bearing surface 101 of the limiting member 130 is not higher than that of the front panel 205. Therefore, a small amount of dust on the front panel 205 can flow away more easily with the rain wash, achieving the purpose of dust prevention.

[0109] (4) Aesthetic appearance: The present application preferably uses a composite material frame prepared from composite materials, which can achieve various colors such as black and dark blue, forming the same color effect as the battery 203 and having a better visual effect. Since the present application reduces the sizes of the limiting member 130 and the abutting member 120, even a metal frame prepared from a metal material or an alloy material, such as an aluminum frame, can improve the visual comfort.

[0110] (5) The assembly form of the cavityless frame 100 is diverse: The present application cancels the cavity of the frame. Therefore, the long and short frames can be connected by an integrated folding method, and a buckle is used to achieve a closed-loop connection at the first and last cavityless frames 100.

[0111] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0112] The technical features of the above-described embodiments may be combined arbitrarily. For the sake of brevity of description, 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, it should be considered as falling within the scope described in this specification.

[0113] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the appended claims.

Claims

1. A cavity-free frame (100), characterized in that: The invention comprises a frame body (110), an abutment member (120) and a stop member (130); the frame body (110) comprises a bearing portion (111), a support portion (112), a mounting portion (113) and a reinforcement portion (114); the bearing portion (111) and the mounting portion (113) are arranged at intervals; the support portion (112) is arranged between the bearing portion (111) and the mounting portion (113) and is connected to the bearing portion (111) and the mounting portion (113); a surface of the bearing portion (111) away from the support portion (112) forms a bearing surface (101) ), one end of the reinforcing portion (114) is connected to the bearing portion (111) and the other end is connected to the supporting portion (112), the abutment member (120) is connected to the first end of the bearing portion (111), the limiting member (130) is connected to the end of the abutment member (120) away from the bearing portion (111), and the limiting member (130), the abutment member (120) and the bearing surface (101) form a mounting groove (140) for mounting the laminate (200), and the notch of the mounting groove (140) faces the second end of the bearing portion (111).

2. The cavity-free frame (100) according to claim 1, characterized in that: The distance between the position where the reinforcing portion (114) is connected to the bearing portion (111) and the position where the bearing portion (111) and the supporting portion (112) are connected is L1, and the width of the bearing portion (111) is D1, wherein L1≥1 / 4D1.

3. The cavity-free frame (100) according to claim 2, characterized in that: L1 is 1 / 2D1~D1.

4. The cavity-free frame (100) according to claim 1, characterized in that: The distance between the position where the reinforcing portion (114) is connected to the supporting portion (112) and the position where the bearing portion (111) and the supporting portion (112) are connected is L2, and the height of the supporting portion (112) is D2, wherein L2≤2 / 3D2.

5. The cavity-free frame (100) according to claim 4, characterized in that: L2 is 1 / 3D2~2 / 3D2.

6. The cavity-free frame (100) according to any one of claims 1 to 5, characterized in that: The cavity-free frame (100) further satisfies at least one of the following conditions: (1) The connection between the support portion (112) and the bearing portion (111) is in the form of an arc transition; (2) The connection between the support portion (112) and the mounting portion (113) is in the form of an arc transition.

7. The cavity-free frame (100) according to claim 6, characterized in that: The cavity-free frame (100) further satisfies at least one of the following conditions: (1) The fillet radius R1 of the arc transition at the connection between the support portion (112) and the bearing portion (111) is between 0.25 and 2; (2) The fillet radius R2 of the arc transition at the connection between the support portion (112) and the mounting portion (113) is between 0.25 and 2.

8. The cavity-free frame (100) according to any one of claims 1 to 5 and 7, characterized in that: The cavity-free frame (100) further satisfies at least one of the following conditions: (1) The frame body (110) further comprises a thickened portion (115), wherein the thickened portion (115) is connected to the support portion (112), and the thickened portion (115) protrudes from a surface of the support portion (112) for connection with the reinforcing portion (114); (2) The support portion (112) is flush with an end surface of a first end portion of the bearing portion (111) and an end surface of one end portion of the mounting portion (113); preferably, the abutment member (120) is flush with the support portion (112); (3) The frame body (110) further comprises a connecting fitting portion (160), one end of which is connected to the support portion (112), and the other end of which extends away from the support portion (112) along a plane where the support portion (112) is located, and the end is in a curled shape. The connecting fitting portion (160) is used to realize a snap-fit ​​connection between adjacent frame bodies (110).

9. The cavity-free frame (100) according to any one of claims 1 to 5 and 7, characterized in that: 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), and the minimum distance H3 between the limiting member (130) and the bearing surface (101) is not less than the thickness H4 of the back panel (201) on the laminate (200). The bearing surface (101) is used to support a portion of the back panel (201) of the laminate (200), and the abutting member (120) is used to abut against the end surface of the back panel (201) of the laminate (200). The end surface of the limiting member (130) is used to abut against the end surface of the front panel (205) of the laminate (200), and the surface of the limiting member (130) facing the bearing surface (101) is used to press against a portion of the back panel (201) of the laminate (200).

10. A photovoltaic module (10), characterized in that: The invention comprises a laminate (200) and a cavity-free frame (100) as claimed in any one of claims 1 to 9, wherein the laminate (200) comprises a back panel (201), a back adhesive film (202), a battery (203), a front adhesive film (204) and a front panel (205) which are stacked in sequence, and the laminate (200) is packaged by the cavity-free frame (100). When packaging, the edge position of the laminate (200) is packaged in a plurality of mounting grooves (140) of the cavity-free frame (100).

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