Composite photovoltaic frame profile and preparation method thereof, photovoltaic module

Abstract

The disclosure discloses a composite photovoltaic frame profile and a preparation method thereof and a photovoltaic module, and belongs to the technical field of photovoltaic frames and photovoltaic modules. The composite photovoltaic frame profile comprises: the composite photovoltaic frame profile has a first end portion and a second end portion arranged oppositely along the length direction thereof; the first end portion is formed with a first surface treatment trace, and / or the second end portion is formed with a second surface treatment trace; the first end portion comprises a first machining surface, the first surface treatment trace comprises a first surface trace one, and the first surface trace one is formed on the first machining surface; and / or the second end portion comprises a second machining surface, the second surface treatment trace comprises a second surface trace one, and the second surface trace one is formed on the second machining surface. The disclosure can improve the surface state of at least one of the first end portion and the second end portion.

Description

Technical Field

[0001] This disclosure belongs to the field of photovoltaic frame and photovoltaic module technology, and specifically relates to composite material photovoltaic frame profiles and their preparation methods, as well as photovoltaic modules. Background Technology

[0002] In the manufacturing and assembly process of composite photovoltaic frames, the composite profile blanks formed by pultrusion usually need to be cut into predetermined lengths according to the size requirements of the photovoltaic modules to obtain composite photovoltaic frame profiles. When the composite photovoltaic frame profiles are cut to form ends and through holes are formed by drilling or punching, the cutting tools and drilling tools will damage the original forming surface of the composite photovoltaic frame profiles. This may result in processing residues such as broken fibers, warped fibers, resin debris, and burrs on the end processing surface, the inner wall of the adjacent end, the wall of the through hole, and the orifice area of ​​the inner and outer sides of the through hole adjacent to the hole wall. The shape and distribution of these processing residues are usually irregular.

[0003] After the composite photovoltaic frame profile is cut and perforated, a protective material is usually applied to its outer surface to form a surface protective layer. During the formation of the surface protective layer, some protective material may adhere to and accumulate on protruding processing residues. Irregularly exposed fibers, resins, and burrs near the ends and through holes may also cause local accumulation, insufficient local shielding, or uneven adhesion of the protective material, affecting the surface protection effect of the corresponding processed areas.

[0004] During subsequent end splicing, burrs, raised fibers, and resin debris remaining on the end machined surface or the inner wall of the adjacent end may cause splicing gaps or positional deviations between adjacent composite photovoltaic frames. They may also increase the resistance when the connector is inserted into the inner cavity, affecting the fitting accuracy between the connector and the inner cavity. During through-hole connection, machining residues on the through-hole wall and the orifice area adjacent to the inner and outer walls of the through-hole may also obstruct the connector from passing through the through-hole, affecting the fitting and installation between the through-hole and the connector. Summary of the Invention

[0005] This disclosure proposes a composite photovoltaic frame profile and its preparation method, as well as a photovoltaic module, to at least partially solve the technical problems of existing composite profiles having processing residues such as broken fibers, warped fibers, resin debris, and burrs at the ends and / or through-hole areas after cutting and drilling. These processing residues affect the end splicing, connector insertion, through-hole connection, and surface protective layer formation. This disclosure addresses the processing residues formed by cutting and drilling by forming a first surface treatment mark at the first end of the composite photovoltaic frame profile, and / or a second surface treatment mark at the second end, and a third surface treatment mark at the through-hole portion for connection with connectors. This improves the surface condition of at least one location in the first end, second end, and through-hole area, while also meeting the process requirements for end splicing, connector insertion, and surface protective layer setting of the composite photovoltaic frame profile. To achieve the objectives of this disclosure, the technical solution is as follows.

[0006] In a first aspect, a composite material photovoltaic frame profile includes: The composite photovoltaic frame profile has a first end and a second end that are disposed opposite to each other along its length; the first end has a first surface treatment mark, the first end includes a first processing surface, the first surface treatment mark includes a first surface mark one, and the first surface mark one is formed on the first processing surface. And / or, the second end has a second surface treatment mark, the second end includes a second processing surface, the second surface treatment mark includes a second surface mark one, the second surface mark one is formed on the second processing surface.

[0007] According to one aspect of the present disclosure, the composite photovoltaic frame profile has an inner cavity extending along its length direction, the inner cavity having a first side corresponding to the first end and a second side corresponding to the second end; On the first side, the first surface treatment mark further includes a second first surface mark, which forms the inner wall of the cavity; and / or, on the second side, the second surface treatment mark further includes a second second surface mark, which forms the inner wall of the cavity.

[0008] According to one aspect of the present disclosure, the first surface mark one and the second surface mark two are spaced apart or continuously arranged; and / or, the second surface mark one and the second surface mark two are spaced apart or continuously arranged.

[0009] According to one aspect of the present disclosure, the composite photovoltaic frame profile further forms at least one through hole for connection with a connector, the through hole communicating with the inner cavity, the connector being insertable into the inner cavity, and the through hole having a third surface treatment mark.

[0010] According to one aspect of the present disclosure, the through hole includes a hole wall, an inner orifice region, and an outer orifice region, wherein the inner orifice region is located on the side of the composite photovoltaic frame profile facing inward, and the outer orifice region is located on the side of the composite photovoltaic frame profile facing outward. The third surface treatment mark includes a third surface treatment mark one, which is formed on the hole wall; And / or, the third surface treatment mark further includes a second third surface treatment mark, which is formed in the outer orifice region; And / or, the third surface treatment mark further includes a third surface treatment mark three, which is formed in the inner orifice region.

[0011] According to one aspect of the present disclosure, the third surface treatment mark one and the third surface treatment mark two are spaced apart or continuously arranged; and / or, the third surface treatment mark one and the third surface treatment mark three are spaced apart or continuously arranged.

[0012] According to one aspect of the present disclosure, the first surface treatment mark and / or the second surface treatment mark and / or the third surface treatment mark include at least one of the following: fiber state change mark, resin state change mark, processing residue change mark, surface morphology change mark, and appearance change mark. The fiber state change traces include at least one of the following: fiber breakage and shortening traces, traces of removed curled fibers, traces of attached curled fibers, and traces of exposed fibers. The processing residue changes include at least one of burr removal marks, burr passivation marks, and resin debris removal marks; The resin state change traces include at least one of resin softening traces, resin remelting traces, resin shrinkage traces, and resin removal traces; The surface morphology change traces include at least one of surface smoothing traces, surface roughening traces, surface unevenness morphology change traces, and surface roughness change traces. The signs of change in appearance include signs of color change.

[0013] According to one aspect of the present disclosure, the connector includes a corner code; and / or, at least one of the first surface treatment mark, the second surface treatment mark, and the third surface treatment mark is formed by at least one surface treatment method selected from baking, hot air heating, infrared heating, flame treatment, laser treatment, mechanical grinding, and cutting finishing.

[0014] Secondly, a method for preparing a composite photovoltaic frame profile includes: Provide composite material profile blanks; The composite material profile blank is processed to form a first end and a second end that are arranged opposite to each other along the length direction of the composite material profile blank; The first end is surface treated to form a first surface treatment mark on the first end, the first end includes a first processing surface, and the first surface treatment mark includes a first surface mark one, the first surface mark one being formed on the first processing surface; And / or, the second end is surface treated to form a second surface treatment mark at the second end, the second end including a second processed surface, the second surface treatment mark including a second surface mark one, the second surface mark one being formed on the second processed surface.

[0015] Thirdly, a photovoltaic module includes: a composite photovoltaic frame profile, a surface protective layer, and a photovoltaic laminate; the composite photovoltaic frame profile is connected to the photovoltaic laminate; the surface protective layer covers at least a portion of the outer surface of the composite photovoltaic frame profile, and the surface protective layer includes at least one of a fluorocarbon coating, a polyurethane coating, an acrylic coating, an epoxy coating, a silicon-modified coating, and an inorganic ceramic coating; the composite photovoltaic frame profile is any of the composite photovoltaic frame profiles described in the first aspect above, or is a composite photovoltaic frame profile prepared using the composite photovoltaic frame profile preparation method described in the second aspect.

[0016] Compared to the prior art, the beneficial effects achieved by this disclosure are as follows: (1) By forming corresponding surface treatment marks at the first end and / or the second end, and at the position of the inner cavity adjacent to the first end and / or the second end, the processing residue state such as fiber breakage, warped fiber, resin debris, burrs and local protrusions on the end processing surface and the inner wall of the inner cavity adjacent to the end can be improved, reducing the impact of processing residue on the end splicing of adjacent composite photovoltaic frame profiles, which is conducive to improving the fit and splicing adaptability between the ends, reducing the obstruction to the insertion of the connector, and enabling the connector to be inserted into the inner cavity more smoothly, thus improving the fit state between the connector and the inner wall of the inner cavity; In addition, by forming a third surface treatment mark at least at one of the hole wall, inner hole area and outer hole area of ​​the through hole, the processing residue state such as burrs, fiber breakage, hole edge chipping and resin debris formed by the opening process can be improved, reducing the impact of processing residue on the fit between the connector and the through hole, which is conducive to improving the connection fit state and connection stability between the connector and the through hole.

[0017] (2) By performing surface treatment on the ends and / or through holes before forming the surface protective layer, the impact of processing residues such as fiber breakage, warped fibers, resin debris, burrs and local protrusions on the coating process can be reduced, and the possibility of local accumulation, insufficient coverage, discontinuity or uneven thickness of the surface protective layer can be reduced. This is conducive to improving the adhesion, continuity and uniformity of the surface protective layer. When surface-treated composite photovoltaic frame profiles are applied to photovoltaic modules, they can take into account the process requirements such as profile end splicing, connector insertion and connection through holes and surface protective layer setting, which is conducive to improving the assembly adaptability, connection reliability and long-term use reliability of photovoltaic modules. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only one or more embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a composite photovoltaic frame profile F according to an embodiment of the present disclosure; Figure 2 This is a schematic diagram of the structure of the first end and through hole portion of a composite photovoltaic frame profile according to an embodiment of the present disclosure; Figure 3 This is a schematic diagram of the third surface treatment mark in the through hole portion of a composite photovoltaic frame profile according to an embodiment of the present disclosure; Figure 4 This is a schematic diagram of the third surface treatment mark three in the through hole portion of a composite photovoltaic frame profile according to an embodiment of the present disclosure; Figure 5 This is a schematic diagram of the structure of a first surface treatment mark according to an embodiment of the present disclosure; The accompanying drawings are provided to further understand the present disclosure and form part of the specification. They are used together with the embodiments of the present disclosure to explain the present disclosure and do not constitute a limitation thereof. Detailed Implementation

[0020] The technical solutions of the present disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present disclosure, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present disclosure without creative effort are within the scope of protection of the present disclosure.

[0021] In the description of the embodiments of this disclosure, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this disclosure, "multiple" means one, two, or more, unless otherwise explicitly defined.

[0022] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this disclosure. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] In the description of the embodiments of this disclosure, technical terms such as "center," "longitudinal," "transverse," "length," "width," "wall thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have or completely have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this disclosure.

[0024] In the description of the embodiments of this disclosure, unless otherwise expressly specified and limited, the technical terms "installation," "connection," "joining," "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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0025] In the accompanying drawings corresponding to the embodiments of this disclosure, the wall thickness and area of ​​the layers are enlarged for better understanding and ease of description. When describing a component on or on the surface of another component, the component may be "directly" located on the surface of the other component, or there may be a third component between the two components. Conversely, when describing a component on the surface of another component, or when another component is formed or disposed on the surface of a component, it indicates that there is no third component between the two components. Furthermore, when describing a component as being "generally" formed on another component, it means that the component is not formed on the entire surface (or front surface) of the other component, nor is it formed on a portion of the edge of the entire surface.

[0026] In the description of embodiments of this disclosure, when a component “includes” another component, other components are not excluded unless otherwise stated, and other components may be further included.

[0027] The terminology used in the description of the various embodiments herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used in the description of the various embodiments and the appended claims, the term "component" is also intended to include the plural form unless the context clearly indicates otherwise.

[0028] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the embodiments of this disclosure to facilitate a better understanding of the disclosure. However, the technical solutions claimed in this disclosure can be implemented even without these technical details and various variations and modifications based on the following embodiments.

[0029] In a first aspect, a composite photovoltaic frame profile F has a first end FF and a second end FS disposed opposite to each other along its length direction; A first surface treatment mark is formed on the first end FF. The first end FF includes a first processing surface FFP. The first surface treatment mark includes a first surface mark-101. The first surface mark-101 is formed on the first processing surface FFP. And / or, the second end FS is formed with a second surface treatment mark, the second end FS includes a second processing surface FSP, the second surface treatment mark includes a second surface mark one, the second surface mark one is formed on the second processing surface FSP.

[0030] In one or more embodiments of this disclosure, the composite photovoltaic frame profile F can be made of a composite material, which may include fibers and resins. The fibers may include at least one of glass fiber, carbon fiber, basalt fiber, and aramid fiber, and the resins may include polyurethane resin, epoxy resin, vinyl ester resin, unsaturated polyester resin, or other resin materials suitable for composite photovoltaic frames. Preferably, the composite material may include or be a glass fiber polyurethane composite material. Of course, the composite material can also be of other types, and those skilled in the art can make reasonable selections or settings according to the actual situation; this disclosure does not limit this.

[0031] In one or more embodiments of this disclosure, along the length direction of the composite photovoltaic frame profile F, the composite photovoltaic frame profile F has a first end FF and a second end FS disposed opposite to each other. The first end FF can be understood as one end of the composite photovoltaic frame profile F along its length direction, and the second end FS can be understood as the other end of the composite photovoltaic frame profile F along its length direction. At least one of the first end FF and the second end FS can be inserted into or mate with a connector, thereby allowing it to be spliced ​​with another composite photovoltaic frame profile, so that multiple composite photovoltaic frame profiles surround the outer periphery of the photovoltaic laminate.

[0032] In one or more embodiments of this disclosure, such as Figure 1 and Figure 2 As shown, the first end portion FF may include a first machined surface FFP formed by cutting and at least a portion of the surface area adjacent to the first machined surface FFP. The at least a portion of the surface area adjacent to the first machined surface FFP may include the outer surface adjacent to the first end portion FF and / or the inner wall of the inner cavity FC. The first end portion FF has a first surface treatment mark, which can be understood as: at least one of the first machined surface FFP and at least a portion of the surface area adjacent to the first machined surface FFP has been surface treated to form a surface morphology, surface structure, surface state, or appearance state that is different from the untreated area.

[0033] In one or more embodiments of this disclosure, the second end portion FS may include a second processed surface formed by cutting and at least a partial surface region adjacent to the second processed surface. The at least partial surface region adjacent to the second processed surface may include the outer surface adjacent to the second end portion FS and / or the inner wall of the inner cavity FC. The second end portion FS has a second surface treatment mark, which can be understood as: at least one of the second processed surface and at least a partial surface region adjacent to the second processed surface has been surface treated to form a surface morphology, surface structure, surface state, or appearance state that is different from the untreated area.

[0034] In one or more embodiments of this disclosure, a first surface treatment mark may be formed only at the first end FF, or a second surface treatment mark may be formed only at the second end FS. Alternatively, both the first and second surface treatment marks may be formed at the first end FF and the second end FS respectively. The first and second surface treatment marks may be formed using the same or different processing methods, and may have the same or different processing ranges and mark morphologies. That is, the formation location, distribution pattern, and surface state of the second surface treatment mark may be the same as or different from the first surface treatment mark. Those skilled in the art can make reasonable selections or settings based on the cutting state, splicing position, and connector installation requirements of the first end FF and the second end FS.

[0035] In one or more embodiments of this disclosure, such as Figure 1 , Figure 2 and Figure 5 As shown, the first processed surface FFP can be understood as the end surface formed by cutting one end of the composite photovoltaic frame profile F along its length direction, and the second processed surface FSP (not shown) can be understood as the end surface formed by cutting the other end of the composite photovoltaic frame profile F along its length direction. The first processed surface FFP and the second processed surface FSP can respectively constitute the end face surfaces of the first end FF and the second end FS, and can be used to splice with the corresponding end face of the adjacent composite photovoltaic frame profile F.

[0036] In one or more embodiments of this disclosure, the first processed surface FFP and the second processed surface FSP can be formed by sawing, milling, grinding, water jetting, laser cutting, or other cutting methods suitable for composite photovoltaic frame profile F. The shape, area, extension direction, and included angle of the first processed surface FFP and the second processed surface FSP relative to the length direction of the composite photovoltaic frame profile F can be set according to the frame splicing method of the photovoltaic module, and this disclosure does not limit this.

[0037] In one or more embodiments of this disclosure, preferably, the first processed surface FFP can be a beveled surface, for example, the angle between the first processed surface FFP and the length extension direction of the composite photovoltaic frame profile F can be 45°, so that the first end FF can be spliced ​​with the corresponding end of another composite photovoltaic frame profile F to form a 90° corner structure. Similarly, the second processed surface FSP can also be a beveled surface, for example, the angle between the second processed surface FSP and the length extension direction of the composite photovoltaic frame profile F can be 45°. Of course, the first processed surface FFP and the second processed surface FSP can also be flat surfaces perpendicular to the length direction of the composite photovoltaic frame profile F, or processed surfaces with other cutting angles, which are not limited in this disclosure.

[0038] In one or more embodiments of this disclosure, when the composite photovoltaic frame profile F is cut to form a first processed surface FFP and / or a second processed surface FSP, the cutting tool (e.g., a cutting machine) may cause fiber breaks, warped fibers, resin debris, burrs, local protrusions, exposed resin interfaces, or other processing residues on the corresponding processed surfaces. The aforementioned processing residues may be distributed throughout the entire area of ​​the first processed surface FFP and / or the second processed surface FSP, or they may be concentrated at the edge position, corner position, dense fiber position, or the entry and exit position of the cutting tool on the corresponding processed surface.

[0039] In one or more embodiments of this disclosure, a first surface mark 101 is formed on a first processed surface FFP. This can be understood as at least a portion of the first processed surface FFP undergoing surface treatment to form the first surface mark 101. For example, there are two first surface marks 101: one first surface mark 1011 and another first surface mark 1012. The first surface mark 101 can be formed over the entire area of ​​the first processed surface FFP, or it can be formed only in the portion of the first processed surface FFP where there are fiber breaks, warped fibers, resin debris, burrs, or other processing residues. This disclosure does not limit the specific number, area, shape, and distribution location of the first surface marks 101 on the first processed surface FFP.

[0040] In one or more embodiments of this disclosure, the first surface mark 101 may manifest as at least one of the following: shortened fiber breaks, reduced or adhered warped fibers, reduced resin debris, burr removal or passivation, resin softening or remelting, resin shrinkage, reduced local protrusion height, change in surface smoothness, change in surface roughness, or change in surface color on the first processed surface FFP. Therefore, the first surface mark 101 can be identified based on the differences in fibers, resin, burrs, surface morphology, surface structure, surface state, or appearance of the first processed surface FFP before and after surface treatment.

[0041] In one or more embodiments of this disclosure, the second surface mark 1 is formed on the second processed surface FSP. This can be understood as at least a portion of the second processed surface FSP being surface-treated to form the second surface mark 1. The second surface mark 1 can be formed over the entire area of ​​the second processed surface FSP, or it can be formed only in the portion of the second processed surface FSP where there are fiber breaks, warped fibers, resin debris, burrs, or other processing residues. This disclosure also does not limit the specific number, area, shape, and distribution location of the second surface mark 1 on the second processed surface FSP.

[0042] In one or more embodiments of this disclosure, the second surface mark one may also manifest as at least one of the following on the second processed surface FSP: shortened fiber breaks, reduced or adhered warped fibers, reduced resin debris, burr removal or passivation, resin softening or remelting, resin shrinkage, reduced local protrusion height, changes in surface smoothness, changes in surface roughness, or changes in surface color. Therefore, the second surface mark one can be identified based on the differences in fibers, resin, burrs, surface morphology, surface structure, surface state, or appearance of the second processed surface FSP before and after surface treatment.

[0043] In one or more embodiments of this disclosure, the first surface mark 101 may be formed only on the first processing surface FFP, or the second surface mark 1 may be formed only on the second processing surface FSP, or the first surface mark 101 and the second surface mark 1 may be formed on both the first processing surface FFP and the second processing surface FSP. The first surface mark 101 and the second surface mark 1 may have the same or different processing range, distribution pattern, mark morphology and surface state. Those skilled in the art can make reasonable selections or settings according to the cutting quality, splicing position and assembly requirements of the first end FF and the second end FS.

[0044] In one or more embodiments of this disclosure, by forming a first surface mark 101 on the first processed surface FFP, the processing residue state such as broken fibers, warped fibers, resin debris, and burrs formed after cutting the first processed surface FFP can be improved, reducing the degree to which processing residues protrude from the first processed surface FFP. This improves the fit between the first processed surface FFP and the corresponding processed surface of the adjacent composite photovoltaic frame profile F, reducing the possibility of processing residues causing splicing gaps or positional deviations.

[0045] Similarly, by forming a second surface mark on the second processed surface FSP, the processing residue state formed after the second processed surface FSP is improved, the impact of the processing residue on the splicing between the second processed surface FSP and the adjacent composite photovoltaic frame profile F is reduced, thereby improving the splicing compatibility of the second end FS.

[0046] By forming a first surface treatment mark on the first end FF and a first surface mark 101 on the first processing surface FFP, and / or forming a second surface treatment mark on the second end FS and a second surface mark 1 on the second processing surface FSP, the cutting surface condition of the composite photovoltaic frame profile F can be improved, reducing the impact of processing residues such as fiber breaks, warped fibers, resin debris and burrs on end splicing and subsequent application of surface protection materials, thereby improving the end processing quality and splicing adaptability of the composite photovoltaic frame profile F.

[0047] Optionally, the interior of the composite photovoltaic frame profile F has an inner cavity FC extending along its length direction, the inner cavity FC having a first side corresponding to the first end FF and a second side corresponding to the second end FS; on the first side of the inner cavity FC, the first surface treatment mark further includes a second first surface mark 102, the second first surface mark 102 being formed on the inner wall of the inner cavity FC; and / or, on the second side of the inner cavity FC, the second surface treatment mark further includes a second second surface mark, the second second surface mark being formed on the inner wall of the inner cavity FC.

[0048] In one or more embodiments of this disclosure, such as Figure 1 , Figure 2 As shown, the inner cavity FC can be understood as a hollow space formed inside the composite photovoltaic frame profile F and extending along the length direction of the composite photovoltaic frame profile F. The inner cavity FC can at least penetrate the first end FF and the second end FS, so that the connector can be inserted into the inner cavity FC from the first end FF and the second end FS.

[0049] In one or more embodiments of this disclosure, the inner cavity FC may be formed by multiple wall portions of the composite photovoltaic frame profile F. Exemplarily, the inner wall of the inner cavity FC may include a first sidewall 10 and a second sidewall 40 disposed opposite each other, a top wall 20 connecting the first sidewall 10 and the second sidewall 40, and a bottom wall 30 connecting the first sidewall 10 and the second sidewall 40. The first sidewall 10, the second sidewall 40, the top wall 20, and the bottom wall 30 may together enclose and form the inner cavity FC extending along the length direction of the composite photovoltaic frame profile F.

[0050] In one or more embodiments of this disclosure, the first sidewall 10 and the second sidewall 40 may be arranged opposite each other along the width direction X of the composite photovoltaic frame profile F, and the top wall 20 and the bottom wall 30 may be arranged opposite each other along the height direction Z of the composite photovoltaic frame profile F. One side of the top wall 20 may be connected to the first sidewall 10, and the other side of the top wall 20 may be connected to the second sidewall 40; one side of the bottom wall 30 may be connected to the first sidewall 10, and the other side of the bottom wall 30 may be connected to the second sidewall 40, thereby forming an inner cavity FC with a closed or substantially closed cross-section.

[0051] Of course, adjacent walls of the first sidewall 10, second sidewall 40, top wall 20, and bottom wall 30 can be directly connected, or they can be connected through an arc transition, a chamfer transition, or other transition structures. The cross-section of the inner cavity FC can be rectangular, polygonal, arc-shaped, or other shapes that allow for the insertion of connectors. The specific cross-sectional shape and dimensions of the inner cavity FC can be set according to the structure of the composite photovoltaic frame profile F and the shape of the connectors, and this disclosure does not limit this.

[0052] In one or more embodiments of this disclosure, on the first side of the inner cavity FC, the first surface treatment mark further includes a second first surface mark 102. The second first surface mark 102 is formed on the inner wall of the inner cavity FC. This can be understood as: at least a portion of the inner wall of the inner cavity FC adjacent to the first end FF is surface treated to form the second first surface mark 102. More specifically, the second first surface mark 102 can be formed on at least one of the first sidewall 10, the second sidewall 40, the top wall 20, and the bottom wall 30 on the first side of the inner cavity FC. The second first surface mark 102 can extend a predetermined distance from the first end FF along the direction of the inner cavity FC toward the second end FS, and can be formed over the entire circumferential area of ​​the inner wall of the inner cavity FC, or it can be formed only on a portion of the wall or a portion of the surface area of ​​the first sidewall 10, the second sidewall 40, the top wall 20, and the bottom wall 30.

[0053] In one or more embodiments of this disclosure, the second surface mark 102 may be formed in the edge region adjacent to the first processed surface FFP in the first sidewall 10, second sidewall 40, top wall 20, and bottom wall 30; in other embodiments, the second surface mark 102 may also extend from the edge region adjacent to the first processed surface FFP along the length direction of the inner cavity FC to form a surface treatment area with a predetermined length. This disclosure does not limit the specific features, area, outline shape, circumferential distribution range, or extension distance along the length direction of the composite photovoltaic frame profile F of the second surface mark 102.

[0054] In one or more embodiments of this disclosure, when the first end FF is cut to form the first processed surface FFP, the cutting tool may form fiber breaks, raised fibers, resin debris, burrs, local protrusions, or other processing residues on the inner wall of the cavity FC adjacent to the first end FF at the junction between the first processed surface FFP and the first sidewall 10, the second sidewall 40, the top wall 20, and the bottom wall 30. The second surface mark 102 may manifest as at least one of the following in the aforementioned region: shortened fiber breaks, reduced or adhered raised fibers, reduced resin debris, burr removal or passivation, softened or remelted resin, resin shrinkage, reduced surface protrusion height, changed surface smoothness, changed surface roughness, or changed surface color. Therefore, the second surface mark 102 can be identified based on the differences in fibers, resin, burrs, surface morphology, surface structure, surface state, or appearance of the corresponding inner wall on the first side of the cavity FC before and after surface treatment.

[0055] In one or more embodiments of this disclosure, on the second side of the inner cavity FC, the second surface treatment mark further includes a second surface mark two, which is formed on the inner wall of the inner cavity FC. This can be understood as: at least a portion of the inner wall of the inner cavity FC adjacent to the second end FS is surface-treated to form the second surface mark two. Similarly, the second surface mark two can be formed on at least one of the first sidewall 10, the second sidewall 40, the top wall 20, and the bottom wall 30 on the second side of the inner cavity FC. The second surface mark two can extend a predetermined distance from the second end FS along the direction of the inner cavity FC toward the first end FF, and can be formed over the entire circumferential area of ​​the inner wall of the second side of the inner cavity FC, or only on a portion of the wall or surface area of ​​the first sidewall 10, the second sidewall 40, the top wall 20, and the bottom wall 30.

[0056] In some embodiments, the second surface mark can be formed in the edge region adjacent to the second processed surface in the first sidewall 10, second sidewall 40, top wall 20, and bottom wall 30; in other embodiments, the second surface mark can also extend from the edge region adjacent to the second processed surface along the length direction of the inner cavity FC to form a surface treatment area with a predetermined length. This disclosure does not limit the specific number, area, outline shape, circumferential distribution range, or extension distance along the length direction of the composite photovoltaic frame profile F of the second surface mark.

[0057] In one or more embodiments of this disclosure, when the second end FS is cut to form a second processed surface, the cutting tool may form fiber breaks, raised fibers, resin debris, burrs, local protrusions, or other processing residues at the junction between the second processed surface and the first sidewall 10, the second sidewall 40, the top wall 20, and the bottom wall 30, as well as on the inner wall of the cavity FC adjacent to the second end FS. The second surface mark can manifest as at least one of the following in the aforementioned areas: shortened fiber breaks, reduced or adhered raised fibers, reduced resin debris, burr removal or passivation, softened or remelted resin, resin shrinkage, reduced surface protrusion height, changed surface smoothness, changed surface roughness, or changed surface color. Therefore, the second surface mark can be identified based on the differences in fibers, resin, burrs, surface morphology, surface structure, surface state, or appearance of the corresponding inner wall on the second side of the cavity FC before and after surface treatment.

[0058] In one or more embodiments of this disclosure, the first surface mark 102 may be formed only on the first side of the inner cavity FC, or the second surface mark 102 may be formed only on the second side of the inner cavity FC, or the first surface mark 102 and the second surface mark 102 may be formed on both the first and second sides of the inner cavity FC. The first surface mark 102 and the second surface mark 102 may be formed using the same or different surface treatment methods, and may have the same or different treatment range, extension distance, circumferential distribution pattern, and mark morphology.

[0059] In one or more embodiments of this disclosure, the second first surface mark 102 may be spaced apart from or continuously disposed with the first surface mark 101 formed on the first processed surface FFP, and local or continuous processing may be selected according to the processing residue distribution state of the first end FF. When the first surface mark 101 and the second first surface mark 102 are continuously disposed, they may form an interconnected surface treatment area at the junction between the first processed surface FFP and at least one of the first sidewall 10, the second sidewall 40, the top wall 20, and the bottom wall 30.

[0060] Similarly, the second surface mark can be spaced apart from or continuously arranged with the second surface mark formed on the second processed surface, and can be locally or continuously processed according to the distribution of processing residue at the second end FS. When the second surface mark is continuously arranged with the second surface mark, the two can form an interconnected surface treatment area at the junction between the second processed surface and at least one of the first sidewall 10, the second sidewall 40, the top wall 20 and the bottom wall 30.

[0061] This reduces the occurrence of processing residues such as broken fibers, warped fibers, resin debris, or burrs at the interface between the aforementioned surfaces, thereby improving the end splicing state of the first end FF and the smoothness of the corner bracket being inserted into the inner cavity FC from the first end FF, and / or the end splicing state of the second end FS and the smoothness of the corner bracket being inserted into the inner cavity FC from the second end FS.

[0062] As can be seen, the first surface mark 101 and the first surface mark 102 are set continuously, or the second surface mark 1 and the second surface mark 2 are set continuously. It is not required that the two surface marks adopt the same surface treatment method, nor is it required that the two surface marks be formed in the same surface treatment process. As long as the surface treatment areas of the two are connected to each other.

[0063] In one or more embodiments of this disclosure, by forming a second surface mark 102 on the inner wall of the first side of the inner cavity FC, the processing residue state formed after cutting of at least one of the first sidewall 10, second sidewall 40, top wall 20, and bottom wall 30 adjacent to the first end FF can be improved. This reduces the influence or obstruction caused by processing residues such as fiber breaks, warped fibers, resin debris, or burrs protruding from the inner wall of the inner cavity FC on the insertion of the connector, thereby allowing the connector to be inserted into the inner cavity FC more smoothly from the first end FF, and improving the fit between the connector and the inner wall of the first side of the inner cavity FC. Similarly, by forming a second surface mark 102 on the inner wall of the second side of the inner cavity FC, the processing residue state formed after cutting of at least one of the first sidewall 10, second sidewall 40, top wall 20, and bottom wall 30 adjacent to the second end FS can be improved. This reduces the influence or obstruction caused by processing residues on the insertion of the connector into the inner cavity FC from the second end FS, and improves the fit between the connector and the inner wall of the second side of the inner cavity FC.

[0064] In one or more embodiments of this disclosure, when the first surface mark 102 and / or the second surface mark 50 extend to the vicinity of the through hole portion 50, the installation position of the connector after being inserted into the inner cavity FC can be improved, the influence of machining residue on the inner wall of the inner cavity FC on the adjustment of the connector position and the correspondence between the connector connection position and the position of the through hole portion 50 can be reduced, so that the connection position of the connector can correspond more accurately to the through hole portion 50.

[0065] Optionally, the composite photovoltaic frame profile F also has at least one through hole 50 for connecting with a connector, the through hole 50 communicating with the inner cavity, the connector being able to be inserted into the inner cavity FC, and the through hole 50 having a third surface treatment mark.

[0066] In one or more embodiments of this disclosure, the composite photovoltaic frame profile F has at least one through-hole 50. The through-hole 50 can penetrate at least one wall of the composite photovoltaic frame profile F along the wall thickness direction and can communicate with the inner cavity FC of the composite photovoltaic frame profile F. A connector can be inserted into the inner cavity FC and connected to the through-hole 50, thereby fixing the connector to the composite photovoltaic frame profile F. Preferably, the connector may include a corner bracket.

[0067] In one or more embodiments of this disclosure, the through-hole portion 50 communicates with the inner cavity FC. This can be understood as the through-hole portion 50 penetrating at least one wall portion surrounding the inner cavity FC, such that one end of the through-hole portion 50 communicates with the inner cavity FC, and the other end communicates with the outside of the composite photovoltaic frame profile F. Exemplarily, the through-hole portion 50 may penetrate the second sidewall 40. Thus, after the connector is inserted into the predetermined installation position of the inner cavity FC, at least a portion of the connection position of the connector may correspond to the through-hole portion 50.

[0068] In one or more embodiments of this disclosure, the connector may be inserted into a first side of the inner cavity FC from a first end FF, and / or the connector may be inserted into a second side of the inner cavity FC from a second end FS. At least a portion of the outer contour of the connector may be adapted to at least a portion of the inner wall of the inner cavity FC, allowing the connector to enter the inner cavity FC along the length direction of the composite photovoltaic frame profile F and remain in a predetermined installation position. Exemplarily, at least a portion of the outer surface of the connector may be opposite or in contact with at least one of the first sidewall 10, the second sidewall 40, the top wall 20, and the bottom wall 30 to define the position of the connector by the inner wall of the inner cavity FC. A mating relationship may be formed between the connector and the inner wall of the inner cavity FC to meet the connector insertion and installation requirements, which is not limited in this disclosure.

[0069] In one or more embodiments of this disclosure, the connector can be connected to the composite photovoltaic frame profile F through the through-hole portion 50. This can be understood as follows: after the connector is inserted into the inner cavity FC, the connection position of the connector corresponds to the through-hole portion 50, and the through-hole portion 50 forms a connection between the connector and the composite photovoltaic frame profile F. The connector may include a protrusion, a snap-fit ​​portion, a connecting post, a connecting block, or other connecting structures that can mate with the through-hole portion 50. After the connector is inserted into the predetermined installation position of the inner cavity FC, the connecting structure can enter the through-hole portion 50 or mate with the hole wall 501 of the through-hole portion 50, thereby connecting the connector to the composite photovoltaic frame profile F through the through-hole portion 50. This disclosure does not limit the connection method between the connector and the through-hole portion 50 to a specific method.

[0070] In one or more embodiments of this disclosure, such as Figure 2 , Figure 3 and Figure 4 As shown, the through hole 50 can penetrate the wall of the composite photovoltaic frame profile F, and can include a hole wall 501, an inner hole area and an outer hole area.

[0071] In one or more embodiments of this disclosure, the hole wall 501 can be understood as: a surface extending around the through-hole 50, formed after the wall of the composite photovoltaic frame profile F is processed by drilling. Along the through-hole 50, one side of the hole wall 501 extends to the inner surface of the composite photovoltaic frame profile F facing the inner cavity FC, and the other side of the hole wall 501 extends to the outer surface of the composite photovoltaic frame profile F away from the inner cavity FC, thereby allowing the through-hole 50 to penetrate the corresponding wall of the composite photovoltaic frame profile F and communicate with the inner cavity FC.

[0072] In one or more embodiments of this disclosure, the inner orifice region can be understood as: at least a portion of the surface region located on the inner surface of the composite photovoltaic frame profile F facing the inner cavity FC, and adjacent to the boundary between the hole wall 501 and the inner surface. Specifically, the inner orifice region may extend from the boundary between the hole wall 501 and the inner surface in a direction away from the center of the through hole 50. The inner orifice region may extend continuously around the inner orifice of the through hole 50, or it may be distributed only in a portion of the circumferential direction of the inner orifice; this disclosure does not limit this.

[0073] In one or more embodiments of this disclosure, the outer aperture region can be understood as: at least a portion of the surface region located on the outer surface of the composite photovoltaic frame profile F on the side opposite to the inner cavity FC, and adjacent to the boundary between the hole wall 501 and the outer surface. Specifically, the outer aperture region may extend from the boundary between the hole wall 501 and the outer surface in a direction away from the center of the through hole 50. The outer aperture region may extend continuously around the outer aperture of the through hole 50, or it may be distributed only in a portion of the circumferential direction of the outer aperture; this disclosure does not limit this.

[0074] Therefore, the hole wall 501 can form the inner surface of the through hole 50, the inner orifice region can form the periphery surface of the orifice adjacent to the inner orifice of the through hole 50, and the outer orifice region can form the periphery surface of the orifice adjacent to the outer orifice of the through hole 50. The hole wall 501, the inner orifice region, and the outer orifice region can be distinguished according to their positional relationship relative to the inner and outer surfaces of the composite photovoltaic frame profile F and the through-hole 50 penetration direction.

[0075] In one or more embodiments of this disclosure, the through-hole portion 50 is formed with a third surface treatment mark, which can be understood as: at least one of the hole wall 501, the inner orifice region, and the outer orifice region undergoes surface treatment to form a surface morphology, surface structure, surface state, or appearance state that is different from the corresponding region when it is not surface treated. The third surface treatment mark may be formed in all or part of the hole wall 501, or in all or part of the inner orifice region and / or the outer orifice region.

[0076] Optionally, the through-hole portion 50 includes a hole wall 501, an inner orifice region, and an outer orifice region. The inner orifice region is located on the side of the composite photovoltaic frame profile F facing inward, and the outer orifice region is located on the side of the composite photovoltaic frame profile F facing outward. The third surface treatment mark includes a third surface treatment mark 201, which is formed on the hole wall 501. And / or, the third surface treatment mark also includes a third surface treatment mark 202, which is formed on the outer orifice region. And / or, the third surface treatment mark also includes a third surface treatment mark 203, which is formed on the inner orifice region.

[0077] In one or more embodiments of this disclosure, such as Figure 2 , Figure 3 and Figure 4 As shown, the through-hole 50 can penetrate the wall of the composite photovoltaic frame profile F and communicate with the inner cavity FC of the composite photovoltaic frame profile F. The through-hole 50 can be formed by drilling, punching, milling, laser drilling, or other drilling methods suitable for the composite photovoltaic frame profile F. The cross-sectional shape of the through-hole 50 can be circular, elliptical, polygonal, oblong, or other shapes that allow the connector to pass through or mate with the connector; this disclosure does not limit this.

[0078] In one or more embodiments of this disclosure, a third surface treatment trace 201 is formed on the hole wall 501. This can be understood as at least a portion of the hole wall 501 undergoing surface treatment to form the third surface treatment trace 201. The third surface treatment trace 201 can be formed in the entire area of ​​the hole wall 501 along the through direction, or it can be formed only in a portion of the hole wall 501 along the through direction. The third surface treatment trace 201 can also be continuously arranged around the circumference of the hole wall 501, or it can be formed only in a portion of the circumference of the hole wall 501. This disclosure does not limit the specific number, area, shape, and distribution location of the third surface treatment trace 201.

[0079] In one or more embodiments of this disclosure, after the hole wall 501 is processed by opening, there may be fiber breaks, warped fibers, resin debris, burrs, or other processing residues protruding from the hole wall 501. The third surface treatment mark 201 may manifest as at least one of the following on the hole wall 501: shortened fiber breaks, reduced or adhered warped fibers, reduced resin debris, burr removal or passivation, resin softening or remelting, reduced surface protrusion height, changes in surface smoothness, changes in surface roughness, or changes in surface color.

[0080] In one or more embodiments of this disclosure, by forming a third surface treatment mark 201 on the hole wall 501, the processing residue state formed after the hole wall 501 is improved, the situation where fiber breaks, warped fibers, resin debris or burrs occupy the effective through space of the through hole portion 50 is reduced, thereby reducing the obstruction of the processing residue to the connector passing through the through hole portion 50 and improving the fit between the connector and the through hole portion 50.

[0081] In one or more embodiments of this disclosure, the third surface treatment trace 202 is formed in the outer aperture region. This can be understood as at least a portion of the surface of the outer aperture region undergoing surface treatment to form the third surface treatment trace 202. The third surface treatment trace 202 may be continuously arranged around the circumference of the outer aperture, or it may be formed only at a portion of the circumference of the outer aperture. The third surface treatment trace 202 may extend in a direction away from the aperture wall 501. This disclosure does not limit the specific number, area, shape, and distribution location of the third surface treatment trace 202.

[0082] In one or more embodiments of this disclosure, the outer orifice region may form fibers, resin flanging, burrs, or other processing residues protruding outwards from the composite photovoltaic frame profile F after the orifice processing. The third surface treatment mark 202 may manifest as at least one of the following in the outer orifice region: shortened fiber breakage, reduced or adhered raised fibers, reduced resin debris, burr removal or passivation, resin softening or remelting, reduced orifice edge sharpness, reduced surface protrusion height, and surface color change.

[0083] In one or more embodiments of this disclosure, by forming a third surface treatment mark 202 on the outer orifice region, the state of machining residue in the outer orifice region of the through-hole portion 50 can be improved, reducing the impact of machining residue in the outer orifice region on the subsequent application of surface protective material. Particularly when a surface protective layer is further formed on the outer surface of the composite photovoltaic frame profile F, the third surface treatment mark 202 can reduce the adhesion or excessive accumulation of protective material on protruding machining residue, thereby improving the uniformity of surface protective material coverage in the outer orifice region.

[0084] In one or more embodiments of this disclosure, a third surface treatment trace 203 is formed in the inner orifice region. This can be understood as at least a portion of the surface of the inner orifice region undergoing surface treatment to form the third surface treatment trace 203. The third surface treatment trace 203 may be continuously arranged around the inner orifice in the circumferential direction, or it may be formed only at a portion of the inner orifice in the circumferential direction. The third surface treatment trace 203 may extend in a direction away from the orifice wall 501. This disclosure does not limit the specific number, area, shape, and distribution location of the third surface treatment trace 203.

[0085] In one or more embodiments of this disclosure, the inner orifice region may form fibers, resin flanges, burrs, or other processing residues protruding into the inner cavity FC after the orifice region is processed. The third surface treatment mark 203 may manifest as at least one of the following in the inner orifice region: shortened fiber ends, reduced or adhered raised fibers, reduced resin debris, burr removal or passivation, resin softening or remelting, reduced orifice edge sharpness, reduced surface protrusion height, and surface color change.

[0086] In one or more embodiments of this disclosure, by forming a third surface treatment mark 203 in the inner orifice region, the processing residue state around the inner orifice of the through hole 50 can be improved, reducing the obstruction caused by the processing residue protruding into the inner cavity FC to the insertion of the connector, adjustment of the connector position, and connection of the connector, thereby improving the fit and installation state between the connector and the composite photovoltaic frame profile F.

[0087] In one or more embodiments of this disclosure, the third surface treatment trace may include only the third surface treatment trace one 201, or only the third surface treatment trace two 202 or the third surface treatment trace three 203, or any two or three of the third surface treatment trace one 201, the third surface treatment trace two 202 and the third surface treatment trace three 203. The third surface treatment trace one 201, the third surface treatment trace two 202 and the third surface treatment trace three 203 may be formed by the same or different surface treatment methods, and may have the same or different treatment range, distribution pattern and trace morphology.

[0088] In one or more embodiments of this disclosure, the third surface treatment mark 1 201 and the third surface treatment mark 202 can be continuously disposed between the hole wall 501 and the outer hole area, or they can be disposed at intervals; the third surface treatment mark 1 201 and the third surface treatment mark 3 203 can be continuously disposed between the hole wall 501 and the inner hole area, or they can be disposed at intervals. Continuous disposal can be understood as the corresponding surface treatment marks forming interconnected surface treatment areas, but it does not require that different areas adopt the same treatment method or be formed in the same process.

[0089] Therefore, forming corresponding third surface treatment marks at least once in the hole wall 501, the outer hole area, and the inner hole area can improve the processing residue state such as fiber breakage, warped fibers, resin debris, and burrs formed after the through hole 50 is processed, and reduce the impact of processing residue on the insertion of connectors, the insertion of connectors, and the mating connection between connectors; at the same time, it can also improve the coverage and distribution of subsequent surface protective materials in the corresponding area of ​​the through hole 50, and improve the processing quality and assembly adaptability of the composite photovoltaic frame profile F.

[0090] Optionally, the first surface treatment mark and / or the second surface treatment mark and / or the third surface treatment mark shall include at least one of the following: fiber state change mark, resin state change mark, processing residue change mark, surface morphology change mark, and appearance change mark; the fiber state change mark includes at least one of fiber breakage and shortening mark, raised fiber removal mark, raised fiber attachment mark, and fiber exposure mark; the processing residue change mark includes at least one of burr removal mark, burr passivation mark, and resin debris removal mark; the resin state change mark includes at least one of resin softening mark, resin remelting mark, resin shrinkage mark, and resin removal mark; the surface morphology change mark includes at least one of surface smoothing mark, surface roughening mark, surface unevenness change mark, and surface roughness change mark; the appearance change mark includes color change mark.

[0091] In one or more embodiments of this disclosure, the first surface treatment trace, the second surface treatment trace, and the third surface treatment trace can be classified into fiber state change traces, resin state change traces, processing residue change traces, surface morphology change traces, and appearance change traces, based on the changed material object and the observable form of surface change. These different categories of surface treatment traces can be formed separately or simultaneously in the same surface treatment area.

[0092] It should be noted that the above classification of surface treatment marks is mainly used to describe changes that can be identified from different observational dimensions such as fiber state, resin state, processing residue state, surface morphology, and appearance after surface treatment. It does not imply that different categories of surface treatment marks are mutually exclusive, nor does it require that different categories of surface treatment marks be independent of each other. Two or more categories of surface treatment marks can simultaneously form in the same surface-treated area. For example, resin removal can form resin removal marks and may expose fibers that were originally covered by resin, thus simultaneously forming fiber exposure marks; resin softening or remelting can cause raised fibers to adhere to the corresponding surface, thus simultaneously forming resin softening marks or resin remelting marks, raised fiber adhesion marks, and surface smoothing marks. Therefore, the same surface change can be classified into one or more surface treatment marks according to its material state, formation result, and observable morphology, depending on actual needs.

[0093] In one or more embodiments of this disclosure, fiber state change traces can be understood as: identifiable traces formed by changes in the length, position, extension state, exposure state, or other fiber states of the fibers in the composite photovoltaic frame profile F before and after surface treatment. Fiber state change traces may include at least one of fiber breakage and shortening traces, raised fiber removal traces, raised fiber attachment traces, and fiber exposure traces.

[0094] In one or more embodiments of this disclosure, fiber breakage shortening marks can be understood as: marks formed by the reduction in the length of a fiber breakage protruding from the corresponding machined surface after surface treatment following cutting or drilling. The fiber breakage can be mechanically removed, shortened by cutting, thermally contracted, or otherwise have its protruding length relative to the corresponding machined surface reduced. Fiber breakage shortening marks can be identified based on changes in the remaining length of the fiber breakage, its protrusion height, or its end shape relative to before surface treatment.

[0095] In one or more embodiments of this disclosure, a raised fiber removal mark can be understood as a mark formed by the removal of at least a portion of the fibers that originally raised or overhanged outward from the corresponding processed surface after surface treatment. After the raised fibers are removed, the number of fibers protruding or overhanging outward in the corresponding area may be reduced, or the original location of the raised fibers may form a fiber cut-off end, a fiber detachment location, or other surface changes after removal.

[0096] In one or more embodiments of this disclosure, raised fiber attachment marks can be understood as: marks formed when fibers that were originally raised relative to the corresponding processed surface move toward the corresponding processed surface and at least partially attach to the surface of resin or other substrates after surface treatment. After the raised fibers are attached, the angle, protrusion height, or overhang length of the fibers relative to the corresponding processed surface can be reduced.

[0097] In one or more embodiments of this disclosure, fiber exposure marks can be understood as marks formed when at least some fibers become more visible due to the softening, remelting, shrinking, removal, or redistribution of resin in the corresponding area, compared to before surface treatment. Fiber exposure marks can manifest as an increase in the number of visible fibers, improved fiber outline clarity, increased exposed fiber surface area, or a change in the visibility of the interface between the fiber and the resin.

[0098] In one or more embodiments of this disclosure, processing residue variation marks can be understood as: identifiable marks formed by changes in the quantity, size, shape, sharpness, protrusion, or distribution of burrs, resin debris, or other processing residues formed after cutting or drilling of the composite photovoltaic frame profile F, after surface treatment. Processing residue variation marks may include at least one of burr removal marks, burr passivation marks, and resin debris removal marks.

[0099] In one or more embodiments of this disclosure, burr removal marks can be understood as: marks formed after at least a portion of the burrs protruding from the first machining surface FFP, the second machining surface, the hole wall 501, the inner orifice region, the outer orifice region, or the inner wall of the inner cavity FC have been removed. After burr removal, the number of burrs, the length of burrs, or the protrusion height of burrs in the corresponding region can be reduced.

[0100] In one or more embodiments of this disclosure, burr passivation marks can be understood as: marks formed when burrs are not completely removed, but the tips, edges, or corners of the burrs become relatively rounded or smooth after surface treatment. Burr passivation marks can manifest as increased curvature of the burr tip, reduced sharp edges, decreased degree of local abrupt change, or a smoother transition between the burr and the corresponding surface.

[0101] In one or more embodiments of this disclosure, resin debris removal marks can be understood as marks formed by resin debris that has adhered, accumulated, or suspended in the corresponding processing area after cutting or drilling, and which has then been at least partially detached after surface treatment. After the resin debris is removed, the number and size of discrete resin particles, flaky resin residues, or blocky resin residues in the corresponding area can be reduced.

[0102] In one or more embodiments of this disclosure, resin state change traces can be understood as identifiable traces formed when the resin in the composite photovoltaic frame profile F undergoes heat treatment, mechanical treatment, or other surface treatment, resulting in changes in its softness / hardness, flow state, cured state, volumetric state, or coverage state. Resin state change traces may include at least one of resin softening traces, resin remelting traces, resin shrinkage traces, and resin removal traces.

[0103] In one or more embodiments of this disclosure, resin softening marks can be understood as: surface changes that remain after the resin softens upon heating and upon cooling or re-curing. Resin softening marks can manifest as sharp protrusions of the original resin becoming gentler, a flowing or flattened state appearing on the resin surface, fibers at least partially embedded in the softened resin, or a change in the transition state between the resin and adjacent areas.

[0104] In one or more embodiments of this disclosure, resin remelting marks can be understood as: marks formed when at least a portion of the resin in the corresponding region melts or reaches a state capable of reflowing after being heated, and then re-solidifies after cooling. Resin remelting marks can manifest as resin respreading, flow textures on the resin surface, blurred original resin interfaces, fusion of adjacent resin regions, or resin re-coating at least a portion of the fibers.

[0105] It should be noted that resin remelting does not require the resin to be completely transformed into a free-flowing liquid. As long as the resin undergoes thermoplastic flow, local melting, or similar state changes during the surface treatment process that are sufficient to alter its original morphology or distribution, resin remelting marks can be formed.

[0106] In one or more embodiments of this disclosure, resin shrinkage marks can be understood as marks formed by the reduction in volume or surface shrinkage of resin after being heated, cured, or subjected to other surface treatments. Resin shrinkage marks can manifest as a reduction in resin coverage, localized inward depression of the resin surface, changes in the relative position between the resin and fibers, or exposure of more fibers.

[0107] In one or more embodiments of this disclosure, resin removal marks can be understood as marks formed by the removal of at least a portion of the resin in the corresponding processing area after heat treatment, mechanical treatment, or other surface treatment. After resin removal, a surface state may be formed with reduced resin layer thickness, reduced resin coverage area, and increased exposure of the resin-fiber interface or fiber.

[0108] In one or more embodiments of this disclosure, surface morphology change traces can be understood as: identifiable traces formed when the smoothness, roughness, unevenness distribution, or surface undulation state of the overall or partial surface of the corresponding processed area changes relative to before surface treatment. Surface morphology change traces may include at least one of surface smoothing traces, surface roughening traces, surface unevenness change traces, and surface roughness change traces.

[0109] In one or more embodiments of this disclosure, surface smoothing marks can be understood as marks formed when broken fibers, warped fibers, burrs, resin debris, or resin protrusions are removed, shortened, adhered, softened, or redistributed after surface treatment, resulting in a reduction in the surface height difference or local protrusion degree of the corresponding area. Surface smoothing marks do not require the corresponding area to form an ideal plane, as long as there are fewer protrusions, a smaller height difference, or a gentler surface transition compared to before surface treatment.

[0110] In one or more embodiments of this disclosure, surface roughening marks can be understood as: microscopic or macroscopic rough structures formed in the corresponding area after mechanical grinding, sandblasting, laser treatment, plasma treatment or other surface treatments. Surface roughening marks can manifest as surface grooves, micro-pits, grinding textures, sandblasting textures or other morphologies that increase the surface roughness.

[0111] In one or more embodiments of this disclosure, surface morphology change marks can be understood as: marks formed when the size, shape, quantity, distribution, or height of the corresponding area's concave parts, convex parts, grooves, undulations, or other surface contours change after surface treatment. Surface morphology change marks can manifest as the reduction or disappearance of original convex parts, or as the formation of new concave parts, convex parts, or surface textures due to surface treatment.

[0112] In one or more embodiments of this disclosure, surface roughness variation traces can be understood as traces formed by an increase or decrease in the surface roughness of the corresponding area relative to its state before surface treatment. Surface roughness variations can be identified through visual observation, tactile comparison, microscopic observation, profile measurement, or roughness parameter measurement. It should be noted that surface roughness variation traces include both traces of increased roughness formed by surface roughening and traces of decreased roughness formed by surface smoothing or polishing.

[0113] In one or more embodiments of this disclosure, such as Figure 5 As shown, appearance change marks can be understood as: identifiable marks formed when the corresponding processed area undergoes surface treatment, resulting in changes in color, gloss, transparency, or other appearance aspects that can be observed externally. Preferably, appearance change marks may include color change marks.

[0114] In one or more embodiments of this disclosure, color change marks can be understood as: marks formed when the color, color depth, hue, or color uniformity of a corresponding area changes relative to its state before surface treatment, after being subjected to heating, laser, flame, plasma, or other surface treatments. Color changes can be caused by resin heating, resin remelting, resin oxidation, resin removal, fiber exposure, or other material state changes.

[0115] Therefore, by describing the first, second, and third surface treatment traces according to different dimensions such as fiber state changes, resin state changes, processing residue changes, surface morphology changes, and appearance changes, the surface treatment traces can be identified from aspects such as material state, processing residue state, surface contour, and appearance state. This is helpful in clarifying the differences between the surface-treated composite photovoltaic frame profile F and the untreated composite photovoltaic frame profile.

[0116] For example, the first surface treatment mark may manifest as at least one of the following in the region corresponding to the first end FF: shortening of fiber breaks, reduction or adhesion of warped fibers, reduction of resin debris, removal or passivation of burrs, softening or remelting of resin, resin shrinkage, reduction of surface protrusion height, change in surface smoothness or roughness, and change in surface color. Therefore, the first surface treatment mark can be identified based on the differences in fibers, resin, burrs, surface morphology, surface structure, surface state, or appearance of the region corresponding to the first end FF before and after surface treatment.

[0117] For example, the second surface treatment mark may manifest as at least one of the following in the region corresponding to the second end FS: shortened fiber breakage, reduced or adhered warped fibers, reduced resin debris, burr removal or passivation, resin softening or remelting, resin shrinkage, reduced surface protrusion height, changes in surface smoothness or roughness, and changes in surface color. Therefore, the second surface treatment mark can be identified based on the differences in fibers, resin, burrs, surface morphology, surface structure, surface condition, or appearance of the region corresponding to the second end FS before and after surface treatment.

[0118] For example, the third surface treatment mark may manifest as at least one of the following in the region corresponding to the through-hole portion 50: shortened fiber breakage, reduced or adhered warped fibers, reduced resin debris, burr removal or passivation, resin softening or remelting, resin shrinkage, reduced surface protrusion height, changes in surface smoothness or roughness, and changes in surface color. Therefore, the third surface treatment mark can be identified based on the differences in fibers, resin, burrs, surface morphology, surface structure, surface condition, or appearance of the region corresponding to the through-hole portion 50 before and after surface treatment.

[0119] It should be noted that the first, second, and third surface treatment marks may have the same or different mark types and appearances. Any surface treatment area may form one type of surface treatment mark, or two or more types of surface treatment marks may form simultaneously. For example, in the same surface treatment area, fiber breakage and shortening marks, resin remelting marks, and color change marks may coexist; this disclosure does not limit this.

[0120] In one or more embodiments of this disclosure, the first surface treatment mark, the second surface treatment mark, and the third surface treatment mark can be formed by baking, hot air heating, infrared heating, flame treatment, laser treatment, mechanical grinding, cutting and trimming, sandblasting, or other surface treatment methods that can change the surface state of the corresponding processing area. Specifically, heat treatment methods such as baking, hot air heating, infrared heating, flame treatment, and laser treatment can cause the resin in the corresponding processing area to soften, melt, remelt, shrink, or solidify, and can cause protruding fibers, resin debris, or burrs to adhere to the corresponding surface or reduce their protrusion. Mechanical treatment methods such as mechanical grinding, cutting and trimming, and sandblasting can remove or shorten fiber breaks, protruding fibers, resin debris, or burrs protruding from the corresponding processing area.

[0121] In one or more embodiments of this disclosure, surface treatment marks at different locations can be formed by the same surface treatment process or by different surface treatment processes. For example, at least two of the first end FF, the second end FS, and the through-hole portion 50 can be surface treated in the same flame treatment process; alternatively, heat treatment and mechanical treatment can be used depending on the type and distribution of processing residues in different processing areas. The surface treatment method, processing temperature, processing time, processing range, and number of treatments used for the corresponding areas of the first end FF, the second end FS, and the through-hole portion 50 can be the same or different, and this disclosure does not limit this.

[0122] For example, surface treatment can remove, shorten, soften, melt, remelt, shrink, passivate, or adhere to the corresponding surface any of the fiber breaks, protruding fibers, resin debris, and burrs present in the corresponding area after cutting or opening, thereby reducing the degree of protrusion of processing residues relative to the corresponding surface of the first end FF, the second end FS, or the through-hole portion 50. The surface-treated area may have fewer protrusions, a smaller surface height difference, lower local sharpness, a smoother surface transition, or a more uniform surface condition compared to the corresponding processed area before surface treatment.

[0123] It should be noted that surface treatment does not require the complete removal of fiber breaks, protruding fibers, resin debris, or burrs from the corresponding processed area. As long as the surface treatment can alter the quantity, size, protrusion height, extension direction, sharpness, distribution, or bonding state with the corresponding surface of at least some of the processing residues, a first surface treatment mark, a second surface treatment mark, or a third surface treatment mark can be formed in the corresponding processed area.

[0124] In one or more embodiments of this disclosure, the first surface treatment mark, the second surface treatment mark, and the third surface treatment mark may be formed before the application of a surface protective material. Specifically, the composite photovoltaic frame profile F may be cut and perforated first, and then at least one of the first end FF, the second end FS, and the through hole portion 50 may be surface treated. Afterward, a surface protective material may be applied to at least a portion of the surface of the composite photovoltaic frame profile F to form a surface protective layer.

[0125] In one or more embodiments of this disclosure, a surface protective material can be formed on the outer surface of the composite photovoltaic frame profile F by spraying, brushing, dipping, spraying, or other application methods. Depending on the flowability and application range of the surface protective material, it can further cover at least a portion of the first end FF, the second end FS, the hole wall 501, the inner orifice region, and the outer orifice region. Because processing residues such as protruding fibers, resin debris, and burrs in the corresponding regions are surface-treated, the adhesion or excessive accumulation of surface protective material on these processing residues can be reduced, and localized insufficient coverage caused by processing residue obstruction can be reduced. This improves the continuity, uniformity, and adhesion of the surface protective material in the corresponding regions.

[0126] In one or more embodiments of this disclosure, by forming a first surface treatment mark at the first end FF and / or a second surface treatment mark at the second end FS, the processing residues such as broken fibers, warped fibers, resin debris, and burrs formed after cutting the first end FF and / or the second end FS can be improved. This reduces the impact of end processing residues on the end fit and positional correspondence between adjacent composite photovoltaic frames, lowering the possibility of splicing gaps or positional deviations between adjacent composite photovoltaic frames. When the first surface treatment mark and / or the second surface treatment mark are formed on the inner wall of the cavity FC adjacent to the corresponding end, the processing residues on the inner wall of the cavity FC can also reduce the obstruction of connector insertion, allowing the connector to be inserted into the cavity FC more smoothly and improving the fit between the connector and the cavity FC.

[0127] In one or more embodiments of this disclosure, by forming a third surface treatment mark in the through-hole portion 50, the processing residue state formed after the hole is opened at least at one of the hole wall 501, the inner orifice region, and the outer orifice region can be improved, reducing the occurrence of fiber breaks, warped fibers, resin debris, or burrs occupying the effective through space of the through-hole portion 50 or protruding from the inner and outer orifices. Therefore, the obstruction of the connector through the through-hole portion 50 by processing residues can be reduced, and the connection and fit between the through-hole portion 50, the connector, and the connector can be improved.

[0128] Therefore, by forming corresponding surface treatment marks at least one of the first end FF, the second end FS, and the through hole portion 50, the processing residue state formed after the composite photovoltaic frame profile F is cut and drilled can be improved, which is beneficial to improving the assembly compatibility during end splicing, connector insertion, and connector installation. At the same time, it can also improve the coverage and distribution of subsequent surface protection material in the corresponding areas of the end and through hole portion 50, thereby improving the processing quality, surface protection quality, and assembly reliability of the composite photovoltaic frame profile F.

[0129] Secondly, a method for preparing a composite photovoltaic frame profile includes: Provide composite material profile blanks; The composite material profile blank is processed to form a first end and a second end that are arranged opposite to each other along the length direction of the composite material profile blank; The first end FF is surface treated to form a first surface treatment mark on the first end FF. The first end includes a first processing surface FFP. The first surface treatment mark includes a first surface mark 101, which is formed on the first processing surface FFP. And / or, the second end FS is surface treated to form a second surface treatment mark on the second end FS, the second end including a second processed surface FSP, the second surface treatment mark including a second surface mark one, the second surface mark one being formed on the second processed surface FSP.

[0130] In one or more embodiments of this disclosure, the composite profile blank can be understood as a profile blank formed of reinforcing fibers and resin, and capable of being made into a composite photovoltaic frame profile F by subsequent pultrusion, compression molding or other composite material molding methods.

[0131] In one or more embodiments of this disclosure, a composite material profile blank can be cut according to a predetermined length of composite photovoltaic frame profile F to form a first end FF and a second end FS. The first end FF can form a first processed surface FFP, and the second end FS can form a second processed surface. The first processed surface FFP and the second processed surface can be processed surfaces that are inclined relative to the length direction. For details regarding the first surface treatment marks and the second surface treatment marks, please refer to the relevant content in the first aspect, which will not be repeated here.

[0132] In one or more embodiments of this disclosure, the method for preparing a composite photovoltaic frame profile further includes: forming at least one through-hole portion 50 for connection with a connector, and performing a surface treatment on the through-hole portion 50 to form a third surface treatment mark. The through-hole portion 50 can be formed on the composite profile blank by drilling, punching, milling, laser drilling, or other drilling methods. The through-hole portion 50 can communicate with an internal cavity FC inside the composite profile blank, so that after the connector is inserted into the internal cavity FC, it can be connected to the manufactured composite photovoltaic frame profile F through the through-hole portion 50.

[0133] It should be noted that the machining of the first end portion FF and the second end portion FS, and the machining of the through hole portion 50, can be performed in any production-appropriate order. The end portion machining can be performed first, followed by the through hole machining; or the through hole machining can be performed first, followed by the end portion machining; or they can be completed in the same machining operation or in consecutive machining operations. This disclosure does not limit the order of the above machining steps.

[0134] In one or more embodiments of this disclosure, surface treatment of the first end FF may include surface treatment of at least one of the first processed surface FFP and at least a portion of the surface region adjacent to the first processed surface FFP to form at least one of the first surface mark 101 and the first surface mark 102; similarly, surface treatment of the second end FS may include surface treatment of at least one of the second processed surface and at least a portion of the surface region adjacent to the second processed surface to form at least one of the second surface mark 1 and the second surface mark 2. These can be referred to in the relevant content of the first aspect of this disclosure, and will not be repeated here.

[0135] In one or more embodiments of this disclosure, surface treatment of the through hole 50 may include surface treatment of at least one of the hole wall 501, the inner orifice region, and the outer orifice region of the through hole 50 to form a third surface treatment mark. These can be referred to in the relevant content of the first aspect of this disclosure, and will not be repeated here.

[0136] In one or more embodiments of this disclosure, the method for preparing composite photovoltaic frame profiles can be used to prepare any of the composite photovoltaic frame profiles described in the first aspect above. Surface treatment of the first end FF, the second end FS, and the through-hole portion 50 can be performed using at least one of baking, hot air heating, infrared heating, flame treatment, laser treatment, mechanical grinding, and cutting finishing. Different locations can use the same or different surface treatment methods, and the order of the surface treatment steps is not limited. The first surface treatment trace, the second surface treatment trace, and the third surface treatment trace formed by the surface treatment can include at least one of fiber state change traces, resin state change traces, processing residue change traces, surface morphology change traces, and appearance change traces. These can be found in the relevant content of the first aspect of this disclosure and will not be repeated here.

[0137] Therefore, by performing end processing and through-hole processing on the composite material profile blank, and by performing surface treatment on the corresponding areas of the first end FF and the second end FS, and the corresponding area of ​​the through-hole portion 50, the processing residue state formed by cutting and opening can be improved, and the end splicing adaptability, connector insertion and connection smoothness of the composite photovoltaic frame profile F can be improved.

[0138] Thirdly, a photovoltaic module includes: Composite material photovoltaic frame profile F, surface protective layer and photovoltaic laminate; The composite photovoltaic frame profile F is connected to the photovoltaic laminate; The surface protective layer covers at least a portion of the outer surface of the composite photovoltaic frame profile F, and the surface protective layer includes at least one of fluorocarbon coating, polyurethane coating, acrylic coating, epoxy coating, silicon-modified coating and inorganic ceramic coating; The composite photovoltaic frame profile is the composite photovoltaic frame profile F as described in any one of the first aspects, or a composite photovoltaic frame profile prepared by the composite photovoltaic frame profile preparation method described in the second aspect.

[0139] In one or more embodiments of this disclosure, the composite photovoltaic frame profile F can form a mounting groove for accommodating the edge portion of the photovoltaic laminate. The edge portion of the photovoltaic laminate can be inserted into the mounting groove and fixed to the composite photovoltaic frame profile F by sealant, structural adhesive, elastic pad, or other connecting medium. Preferably, the photovoltaic module may include four composite photovoltaic frame profiles F, which surround the periphery of the photovoltaic laminate and can be connected end to end in sequence to form a rectangular frame structure surrounding the outer periphery of the photovoltaic laminate. Each composite photovoltaic frame profile F can be the composite photovoltaic frame profile F described in any embodiment of the first aspect above, or it can be a composite photovoltaic frame profile F prepared by the preparation method described in any embodiment of the second aspect above. These can be referred to in the relevant content of the first and second aspects of this disclosure, and will not be repeated here.

[0140] In one or more embodiments of this disclosure, two adjacent composite photovoltaic frame profiles F can be connected by a connector. Exemplarily, the connector can be inserted into the inner cavity FC of two adjacent composite photovoltaic frame profiles F, and the connector can be connected to the composite photovoltaic frame profile F through corresponding through-hole portions 50, thereby forming a connection between the two adjacent composite photovoltaic frame profiles F at the corner position of the photovoltaic laminate.

[0141] In one or more embodiments of this disclosure, a surface protective layer may cover at least a portion of the outer surface of the composite photovoltaic frame profile F. The outer surface may include at least one of the following: a surface of the composite photovoltaic frame profile F facing the outside of the photovoltaic module; a surface exposed to the external environment; and a surface that, after installation, is subject to sunlight, rain, moisture, dust, corrosive media, or mechanical friction. The surface protective layer may include at least one of the following: a fluorocarbon coating, a polyurethane coating, an acrylic coating, an epoxy coating, a silicon-modified coating, and an inorganic ceramic coating. These different types of coatings may form a surface protective layer individually or be combined to form a single-layer, double-layer, or multi-layer protective structure. For example, fluorocarbon coatings can be used to improve the weather resistance, UV aging resistance, and corrosion resistance of composite photovoltaic frame profiles F; polyurethane coatings can be used to improve the adhesion, wear resistance, and flexibility of the surface protective layer; acrylic coatings can be used to improve surface appearance and weather resistance; epoxy coatings can be used to improve adhesion strength and chemical corrosion resistance; silicon-modified coatings can be used to improve high and low temperature resistance and weather resistance; and inorganic ceramic coatings can be used to improve surface hardness, wear resistance, heat resistance, and corrosion resistance. This disclosure does not limit different coatings to having specific functions.

[0142] In one or more embodiments of this disclosure, the surface protective layer can be formed on the corresponding surface of the composite photovoltaic frame profile F by spraying, brushing, dipping, spraying, electrostatic spraying, powder coating, or other coating methods. The surface protective layer can be formed after the first end FF, the second end FS, and the through hole 50 are processed from the composite profile blank.

[0143] Preferably, at least one of the first end portion FF, the second end portion FS, and the through-hole portion 50 can be surface-treated according to the preparation method in the second aspect described above to form corresponding first surface treatment marks, second surface treatment marks, and third surface treatment marks, and then a surface protective layer is formed on at least a portion of the surface of the composite photovoltaic frame profile F. By performing surface treatment before coating the surface protective layer, the impact of processing residues such as fiber breaks, warped fibers, resin debris, burrs, or local protrusions on the coating process can be reduced. This helps to reduce the occurrence of local accumulation, insufficient coverage, discontinuity, or uneven thickness of the surface protective layer in the corresponding areas, and improves the adhesion, continuity, and uniformity of the surface protective layer.

[0144] It should be noted that the surface protective layer may cover at least one of the first, second, and third surface treatment marks, or it may only cover a portion of the corresponding surface treatment mark. When the surface protective layer covers the corresponding surface treatment mark, the surface treatment mark may remain between the surface protective layer and the composite photovoltaic frame profile F, and may be identified by removing the surface protective layer, cross-sectional observation, or other detection methods where possible. However, for areas located inside the cavity, hole wall 501, inner orifice area, or other areas that are difficult to coat or do not require coating, a surface protective layer may not be formed, leaving at least one of the first, second, and third surface treatment marks formed in the aforementioned areas exposed or identifiable. Since these areas are usually located inside the composite photovoltaic frame profile F, at connection points, or on other non-major appearance surfaces after the photovoltaic module is assembled, the corresponding surface treatment marks usually do not significantly affect the external visual effect of the photovoltaic module.

[0145] In this disclosure, the photovoltaic laminate can be a plate-shaped power generation structure formed by a lamination process. The photovoltaic laminate may include an upper glass on the light-receiving side, a back-side support and protection member on the back-lighting side, photovoltaic cell units disposed between the upper glass and the back-side support and protection member, and an encapsulation medium for encapsulating the photovoltaic cell units. The encapsulation medium may include an ethylene-vinyl acetate copolymer film, a polyolefin elastomer film, an ethylene-polyolefin elastomer composite film, or other photovoltaic encapsulation materials. The back-side support and protection member can be a backsheet or a back glass. The photovoltaic cell units can be bonded and sealed between the upper glass and the back-side support and protection member using the encapsulation medium. The layered structure of the photovoltaic laminate and its lamination process can adopt corresponding structures and processes in the existing photovoltaic module technology field.

[0146] In this disclosure, the photovoltaic module can be a back contact photovoltaic module, a tunnel oxide passivated contact photovoltaic module, a heterojunction photovoltaic module, a bifacial photovoltaic module, a single-sided photovoltaic module, or other types of photovoltaic modules. This disclosure does not limit the specific battery technology route, photovoltaic cell type, or module packaging form adopted by the photovoltaic module.

[0147] Therefore, by using the composite photovoltaic frame profile F in the first aspect above, or by using the preparation method in the second aspect above to prepare the composite photovoltaic frame profile F, the processing residue state at its ends, inner cavity FC and through hole 50 can be improved; by providing a surface protective layer on at least part of the outer surface of the composite photovoltaic frame profile F, the weather resistance, corrosion resistance, wear resistance and appearance stability of the composite photovoltaic frame profile F can be improved, thereby improving the assembly adaptability and long-term reliability of the photovoltaic module.

[0148] Those skilled in the art will understand that the technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments have been described. The steps, measures, and schemes in the various operations, methods, and processes discussed in this disclosure can be alternated, modified, combined, or deleted. Furthermore, other steps, measures, and schemes in the various operations, methods, and processes discussed in this disclosure can also be alternated, modified, rearranged, decomposed, combined, or deleted. Furthermore, the steps, measures, and schemes in the prior art that are different from those in the various operations, methods, and processes disclosed in this disclosure can also be alternated, modified, rearranged, decomposed, combined, or deleted. As long as there is no contradiction in the combination of these technical features, they should all be considered to be within the scope of this specification.

[0149] The above-described embodiments are merely examples of several implementation methods of the present disclosure, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the patent for the present disclosure. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present disclosure, and these all fall within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be determined by the appended claims.

Claims

1. A composite material photovoltaic frame profile, characterized in that, include: The composite photovoltaic frame profile has a first end and a second end that are disposed opposite to each other along its length direction; The first end has a first surface treatment mark, the first end includes a first processing surface, the first surface treatment mark includes a first surface mark one, the first surface mark one is formed on the first processing surface; And / or, the second end has a second surface treatment mark, the second end includes a second processing surface, the second surface treatment mark includes a second surface mark one, the second surface mark one is formed on the second processing surface.

2. The composite photovoltaic frame profile according to claim 1, characterized in that, The composite photovoltaic frame profile has an inner cavity extending along its length, the inner cavity having a first side corresponding to the first end and a second side corresponding to the second end; On the first side, the first surface treatment mark further includes a second first surface mark, which forms the inner wall of the cavity; and / or, on the second side, the second surface treatment mark further includes a second second surface mark, which forms the inner wall of the cavity.

3. The composite photovoltaic frame profile according to claim 2, characterized in that, The first surface mark one and the second surface mark two are arranged alternately or continuously; and / or, the second surface mark one and the second surface mark two are arranged alternately or continuously.

4. The composite photovoltaic frame profile according to claim 2, characterized in that, The composite photovoltaic frame profile also has at least one through hole for connection with a connector. The through hole communicates with the inner cavity, and the connector can be inserted into the inner cavity. The through hole has a third surface treatment mark.

5. The composite photovoltaic frame profile according to claim 4, characterized in that, The through-hole includes a hole wall, an inner orifice area, and an outer orifice area. The inner orifice area is located on the side of the composite photovoltaic frame profile facing inward, and the outer orifice area is located on the side of the composite photovoltaic frame profile facing outward. The third surface treatment mark includes a third surface treatment mark one, which is formed on the hole wall; And / or, the third surface treatment mark further includes a second third surface treatment mark, which is formed in the outer orifice region; And / or, the third surface treatment mark further includes a third surface treatment mark three, which is formed in the inner orifice region.

6. The composite photovoltaic frame profile according to claim 5, characterized in that, The third surface treatment mark one and the third surface treatment mark two are arranged alternately or continuously; and / or, the third surface treatment mark one and the third surface treatment mark three are arranged alternately or continuously.

7. The composite photovoltaic frame profile according to claim 2 or 4, characterized in that, The first surface treatment mark and / or the second surface treatment mark and / or the third surface treatment mark include at least one of the following: fiber state change mark, resin state change mark, processing residue change mark, surface morphology change mark, and appearance change mark; The fiber state change traces include at least one of the following: fiber breakage and shortening traces, traces of removed curled fibers, traces of attached curled fibers, and traces of exposed fibers. The processing residue changes include at least one of burr removal marks, burr passivation marks, and resin debris removal marks; The resin state change traces include at least one of resin softening traces, resin remelting traces, resin shrinkage traces, and resin removal traces; The surface morphology change traces include at least one of surface smoothing traces, surface roughening traces, surface unevenness morphology change traces, and surface roughness change traces. The signs of change in appearance include signs of color change.

8. The composite photovoltaic frame profile according to claim 7, characterized in that, The connector includes corner brackets; and / or, at least one of the first surface treatment mark, the second surface treatment mark, and the third surface treatment mark is formed by at least one surface treatment method selected from baking, hot air heating, infrared heating, flame treatment, laser treatment, mechanical grinding, and cutting finishing.

9. A method for preparing a composite photovoltaic frame profile, characterized in that, include: Provide composite material profile blanks; The composite material profile blank is processed to form a first end and a second end that are arranged opposite to each other along the length direction of the composite material profile blank; The first end is surface treated to form a first surface treatment mark on the first end, the first end includes a first processing surface, and the first surface treatment mark includes a first surface mark one, the first surface mark one being formed on the first processing surface; And / or, the second end is surface treated to form a second surface treatment mark at the second end, the second end including a second processed surface, the second surface treatment mark including a second surface mark one, the second surface mark one being formed on the second processed surface.

10. A photovoltaic module, characterized in that, include: Composite photovoltaic frame profiles, surface protective layers, and photovoltaic laminates; The composite photovoltaic frame profile is connected to the photovoltaic laminate; The surface protective layer covers at least a portion of the outer surface of the composite photovoltaic frame profile, and the surface protective layer includes at least one of fluorocarbon coating, polyurethane coating, acrylic coating, epoxy coating, silicon-modified coating and inorganic ceramic coating; The composite photovoltaic frame profile is the composite photovoltaic frame profile according to any one of claims 1 to 8, or is a composite photovoltaic frame profile prepared by the composite photovoltaic frame profile preparation method according to claim 9.

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