Manufacturing process and manufacturing production line of dust deposition prevention photovoltaic module

Abstract

The embodiment of the invention provides a manufacturing process and a manufacturing production line of an anti-dust-deposition photovoltaic module, and relates to the technical field of production of photovoltaic modules. According to the manufacturing process of the anti-dust-deposition photovoltaic module, the anti-dust-deposition photovoltaic module comprises a laminated piece and a frame arranged around the laminated piece, the frame comprises at least one anti-dust-deposition frame edge, and the anti-dust-deposition frame edge is free of a face A. The manufacturing process comprises the following steps that the back face of the laminated piece faces upwards, and the back face of the laminated piece faces upwards; pre-gluing is carried out on the edge, corresponding to the dust deposition prevention frame edge, of the back surface; gluing the frame edge corresponding to the edge, which is not pre-glued, of the laminated part; and the laminated piece and all the frame edges are framed. According to the manufacturing process of the dust deposition prevention photovoltaic module, the process rhythm can be shortened, and the situation that glue overflows to the front face of the laminated piece can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic module production, in particular to a process technology for a dust-proof photovoltaic module and a process production line. BACKGROUND

[0002] Currently, the installation mode of the photovoltaic module is mostly inclined installation, and the frame of the existing photovoltaic module mostly adopts an A-face frame design, that is, the frame edge of the frame includes an A-face covering the edge of the light-receiving surface of the laminated piece, a B-face corresponding to the side surface of the laminated piece, and a groove bottom surface supported on the edge of the back surface of the laminated piece, and the A-face, the B-face and the groove bottom surface jointly constitute a frame edge groove. The A-face of the frame edge has a protective effect on the laminated piece, but it will cause the problems of water accumulation and dust accumulation of the photovoltaic module, thereby causing the power attenuation of the photovoltaic module, increasing the risk of hot spot effect, reducing the power generation and reliability, and increasing the maintenance cost of the power station in the later period. In order to solve the problems caused by the A-face of the frame edge, a dust-proof frame edge without A-face frame design can be used, which removes the A-face that will block the light-receiving surface of the laminated piece.

[0003] The existing process technology of the photovoltaic module is mainly for the installation of the frame edge with the A-face, the glue is first injected into the frame edge groove of the frame edge, and then the frame edge and the laminated piece are combined together, so that the glue fills the gap between the laminated piece and the frame edge groove. In this process technology, it is usually necessary to complete the glue injection and frame installation of one photovoltaic module before the glue injection and frame installation of the next photovoltaic module, which results in a long production rhythm.

[0004] Moreover, this process technology is for the frame edge with the A-face, and due to the existence of the A-face, the glue is not easy to overflow to the light-receiving surface of the laminated piece. However, for the installation of the frame edge without the A-face, when the existing process technology is used, the glue is easy to overflow to the light-receiving surface of the laminated piece, and a large number of personnel are needed to wipe the glue on site, otherwise the overflowed glue not only pollutes the laminated piece, but also easily sticks to the conveying line, which further pollutes the laminated piece. SUMMARY

[0005] The purpose of the embodiments of the present application is to provide a process technology for a dust-proof photovoltaic module, which can not only shorten the process rhythm, but also reduce the overflow of the glue to the front surface of the laminated piece.

[0006] In a first aspect, the embodiments of the present application provide a process technology for a dust-proof photovoltaic module, the dust-proof photovoltaic module comprising a laminated piece and a frame arranged around the laminated piece, the frame comprising at least one dust-proof frame edge, the dust-proof frame edge being free of an A-face, and the process technology comprising the following steps: The back surface of the laminated piece is faced upward, and the edge of the back surface corresponding to the dust-proof frame edge is pre-glued; The frame edge corresponding to the edge of the laminated piece which is not pre-glued is glued; Frame the laminated piece with all the frame edges.

[0007] In the above technical solution, for the process of each photovoltaic module, the pre-gluing of part of the edges of the laminated piece is performed, the gluing of part of the frame edges is performed, and then the frame is assembled. Therefore, when the gluing step of the frame edges of one photovoltaic module is performed, the pre-gluing step of the laminated piece of the next photovoltaic module can be performed synchronously, so that the process cycle can be shortened.

[0008] In addition, in the mounting of the frame edges without the A surface and the laminated piece, the pre-gluing is performed on the back of the laminated piece at the edge position corresponding to the frame edge without the A surface, and then the frame is assembled. When the frame is assembled, the glue is applied on the laminated piece, and the glue is difficult to overflow to the front surface (light receiving surface) of the laminated piece, that is, the overflow of the glue to the front surface of the laminated piece can be reduced, so that the glue wiping action can be reduced, and the pollution caused by the overflow of the glue can be reduced.

[0009] In a possible implementation, the laminated piece is rectangular, the frame includes two frame edges without the A surface corresponding to two opposite edges of the laminated piece, and two protective frame edges corresponding to the other two edges of the laminated piece, and the protective frame edges have the A surface. In the process, the pre-gluing is performed on the two edges of the laminated piece corresponding to the frame edges without the A surface, and the gluing is performed on the two protective frame edges.

[0010] In the above technical solution, the two edges of the conventional anti-dust photovoltaic module are provided with the frame edges without the A surface, and the other two edges are provided with the protective frame edges with the A surface. The process of the embodiment of the application is suitable for the production of the conventional anti-dust photovoltaic module.

[0011] In a possible implementation, the frame edge without the A surface includes a B surface corresponding to the side surface of the laminated piece and a groove bottom surface supported on the back surface of the laminated piece. In the process, the laminated piece and the frame edge without the A surface are assembled to form a first glue layer between the B surface and the side surface of the laminated piece, a second glue layer between the groove bottom surface and the back surface of the laminated piece, and the front surface of the laminated piece is higher than the B surface and higher than the first glue layer.

[0012] In the technical solution, the process technology can realize the installation of the anti-dust frame edge according to the specific setting position, the front side of the laminated piece is higher than the anti-dust frame edge and the first adhesive layer, and the anti-dust frame edge adopts the frame design without the A surface, so that the anti-dust frame edge is in the relatively lowest position, the edge position cannot block the front side of the laminated piece, the anti-dust performance of the photovoltaic module can be maximally realized, the dust problem of the module is effectively reduced, and the use requirement is met.

[0013] In a possible implementation, the protection frame edge includes an A surface corresponding to the front side of the laminated piece, a B surface corresponding to the side surface of the laminated piece, and a groove bottom surface supported on the back surface of the laminated piece, and the A surface, the B surface, and the groove bottom surface jointly constitute a frame edge groove. In the process technology, the laminated piece and the protection frame edge are framed to be arranged in the frame edge groove.

[0014] In the technical solution, the process technology can realize the installation of the protection frame edge according to the conventional mode.

[0015] In a possible implementation, the distance between the adhesive strip formed by pre-adhesive of the laminated piece and the corresponding edge of the laminated piece is 0-5 mm, and optionally 0-3 mm.

[0016] In the technical solution, when pre-adhesive is performed, the distance between the adhesive strip on the laminated piece and the corresponding edge is controlled, the uniformity of the adhesive liquid arrangement during framing is improved, and the overflow of the adhesive liquid to the front side of the laminated piece is reduced.

[0017] In a possible implementation, the length of the single adhesive strip is 1303-1134 mm, the width is 5-15 mm, and the weight is 30-40 g.

[0018] In the technical solution, when pre-adhesive is performed, the specification of the adhesive strip on the laminated piece is controlled, the adhesion effect of the adhesive strip is ensured, and the overflow of the adhesive liquid to the front side of the laminated piece is reduced.

[0019] In a possible implementation, the framing method includes relatively translating the edge of the laminated piece into the corresponding frame edge and keeping for a period of time.

[0020] In the technical solution, the framing method adopts the conventional framing process, and the change to the conventional process technology is small.

[0021] In a possible implementation, when framing is performed, the joint width between the adjacent frame edges is controlled to be less than 0.5 mm.

[0022] In the technical solution, the joint width is controlled during the frame mounting to meet the product standard.

[0023] In a possible implementation, after the frame mounting is completed, a curing step is further included, and the curing method comprises: stacking the components formed by the frame mounting in a direction with the back of the laminated piece upward, and arranging hard spacers between the adjacent frame edges of the components, and then curing.

[0024] In the technical solution, the hard spacers are used for blocking and supporting, and then curing, the hard spacers are used to support the sinking and bending part of the laminated piece caused by gravity, thereby achieving effective curing of the laminated piece and the frame.

[0025] In a second aspect, the embodiments of the present application provide a production line for implementing the process technology of the anti-dust photovoltaic module provided in the first aspect, and the production line comprises: A conveying belt is used to convey the laminated piece, and the conveying belt is sequentially provided with a standby station and a frame mounting and glue applying station along a conveying direction. A pre-gluing machine is arranged at the standby station and is used to pre-glue the laminated piece. A frame mounting and glue applying machine is arranged at the frame mounting and glue applying station and is used to apply glue to the frame edge and mount the laminated piece and the frame edge.

[0026] In the technical solution, the production line is used to realize the continuous production of the anti-dust photovoltaic module, which can not only shorten the process rhythm, but also reduce the overflow of glue to the front surface of the laminated piece, thereby reducing the glue wiping action and the pollution caused by the glue overflow. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0028] Figure 1 It is a schematic diagram of the installation process of the existing conventional frame edge; Figure 2 It is a schematic diagram of the installation process of the existing anti-dust frame edge; Figure 3 It is a process schematic diagram of the process technology of the anti-dust component provided by the embodiments of the present application; Figure 4 It is a schematic diagram of the frame mounting process of the short edge of the laminated piece in the anti-dust frame edge. Figure 3 It is a schematic diagram of the frame mounting process of the short edge of the laminated piece in the anti-dust frame edge.

[0029] Icons: 110-Laminated component; 120-Anti-dust frame edge; 121-B side; 122-Slot bottom; 130-Protective frame edge; 131-A side; 141-Adhesive liquid; 142-Adhesive layer; 150-Conveyor belt; 160-Pre-gluing machine; 170-Framed gluing machine. Detailed Implementation

[0030] like Figure 1 As shown, the existing photovoltaic module manufacturing process mainly targets the installation of conventional frame edges (i.e., protective frame edges 130) with A-side 131. The conventional frame edge (protective frame edge 130) includes A-side 131 covering the front of the laminate 110, B-side 121 corresponding to the side of the laminate 110, and a groove bottom surface 122 supporting the back of the laminate 110. A-side 131, B-side 121, and groove bottom surface 122 together constitute the frame edge groove. The current installation process for this conventional frame edge (protective frame edge 130) is as follows: Figure 1 As shown, existing technologies all use an integrated framing and gluing machine for integrated gluing. The gluing machine applies adhesive 141 into the edge groove of the conventional frame edge (protective frame edge 130). The framing machine then pushes the protective frame edge 130 together with the laminate 110, filling the gap between the laminate 110 and the edge groove with adhesive 141 to form an adhesive layer 142. Because the protective frame edge 130 has surface A 131 and an overflow groove, the adhesive 141 can be prevented from overflowing onto the front (light-receiving) surface of the laminate 110.

[0031] However, to solve the dust accumulation problem caused by the A-side of the conventional frame, a dust-resistant frame edge 120 with no A-side border design can be used, as detailed below. Figure 2 As shown, the anti-dust accumulation frame 120 removes the A-side that would block the light-receiving surface of the laminate 110. The anti-dust accumulation frame 120 includes a B-side 121 corresponding to the side of the laminate 110 and a groove bottom surface 122 supporting the back of the laminate 110. However, the current installation process of the anti-dust accumulation frame 120 is the same as that of conventional frame installation. Adhesive 141 is applied to the anti-dust accumulation frame 120 (specifically, it can be applied to the groove bottom surface 122), and then the anti-dust accumulation frame 120 is combined with the laminate 110 to form an adhesive layer 142. In this process, because the anti-dust accumulation frame 120 does not have an A-side, the adhesive 141 is prone to overflowing onto the front (light-receiving surface) of the laminate 110, requiring a large number of personnel to wipe the adhesive on-site. Otherwise, the overflowing adhesive 141 will not only contaminate the laminate 110, but also easily stick to the transmission line, further contaminating the laminate 110.

[0032] Moreover, all of the above-mentioned processes suffer from insufficient cycle time, mainly reflected in the long gluing time of the frame-mounting and gluing integrated machine. In some cases, the gluing rate needs to be reduced by controlling the amount of glue in order to ensure the gluing effect on the anti-dust frame edge 120.

[0033] In order to solve the overflow problem and the insufficient beat problem, the above process needs to be improved.

[0034] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below. If specific conditions are not specified in the embodiments, the conventional conditions or the conditions recommended by the manufacturer are used. If the reagents or instruments used are not specified by the manufacturer, they are all conventional products that can be purchased on the market.

[0035] The process of the dust-proof photovoltaic module in the embodiments of the present application will be described in detail below.

[0036] Please refer to Figure 3 The embodiments of the present application provide a process of a dust-proof photovoltaic module, the dust-proof photovoltaic module includes a laminated part 110 and a frame arranged around the laminated part 110, the frame includes at least one dust-proof frame edge 120, the dust-proof frame edge 120 has no A surface, and the process includes the following steps: S1, the back surface of the laminated part 110 faces upwards, and the edge of the back surface corresponding to the dust-proof frame edge 120 is pre-glued; S2, the frame edge corresponding to the edge of the laminated part 110 which is not pre-glued is glued; S3, the laminated part 110 is framed with all the frame edges.

[0037] In the embodiments of the present application, for the process of the same dust-proof photovoltaic module, the step S1 and the step S2 are for different parts, and therefore the sequence is not specifically limited. That is, the pre-gluing action of the step S1 can be performed first, and then the gluing action of the step S2 can be performed, or the gluing action of the step S2 can be performed first, and then the pre-gluing action of the step S1 can be performed, or the pre-gluing action of the step S1 and the gluing action of the step S2 can be performed simultaneously. For continuous production of the dust-proof photovoltaic module, in order to shorten the process beat, the pre-gluing action of the step S1 and the gluing action of the step S2 can be performed simultaneously.

[0038] In addition, the embodiments of the present application also provide a process line for implementing the process of the dust-proof photovoltaic module in the foregoing embodiments, which includes: A conveyor belt 150 is used to convey the laminated part 110, and the conveyor belt 150 is sequentially provided with a standby station, a gluing and framing station along the conveying direction; A pre-gluing machine 160 is arranged at the standby station and is used to pre-glue the laminated part 110; A framing and gluing machine 170 is arranged at the gluing and framing station and is used to glue the frame edge and frame the laminated part 110 with the frame edge.

[0039] In some embodiments of the present application, the laminated member 110 is rectangular, and the frame includes at least one dirt-proof frame edge 120. As an implementation, the frame specifically includes two dirt-proof frame edges 120 corresponding to two opposite edges of the laminated member 110, and two protective frame edges 130 corresponding to the other two edges of the laminated member 110; in the process, the edges of the two corresponding dirt-proof frame edges 120 of the laminated member 110 are pre-glued, and the two protective frame edges 130 are glued. In other embodiments, the laminated member 110 can also be other shapes, such as square or polygon, wherein at least one edge is provided with a dirt-proof frame edge 120.

[0040] In the present embodiment, the laminated member 110 is rectangular, and the edges thereof are two opposite long edges and two opposite short edges. The two short edges of the laminated member 110 are provided with dirt-proof frame edges 120, the dirt-proof frame edges 120 adopt an A-face-free frame design, and the two long edges are provided with protective frame edges 130, the protective frame edges 130 adopt an A-face frame design; in the process, the edges of the two short edges of the laminated member 110 are pre-glued, the two protective frame edges 130 are glued, and then the frame is assembled.

[0041] In other embodiments, one short edge of the laminated member 110 is provided with a dirt-proof frame edge 120, and the remaining edges are provided with protective frame edges 130; in the process, the edge of the one short edge of the laminated member 110 is pre-glued, the three protective frame edges 130 are glued, and then the frame is assembled.

[0042] From the process production line of the embodiment of the present application, compared with the conventional assembly process of the corresponding conventional frame edge, only two sets of pre-gluing machines 160 (such as back glass gluing equipment (Shengcheng), with a beat of <18S, and the glue supply system can use the glue supply system of the existing frame gluing machine 170) need to be added to the material waiting station in front of the existing frame gluing machine 170. The pre-gluing machine 160 pre-glues the edges of the corresponding anti-dust accumulation frame edge 120 (in this embodiment, it is pre-glued on two short edges) of the laminated piece 110. The remaining frame gluing machine 170 only needs to glue and assemble the frame edge corresponding to the edge of the laminated piece 110 that has not been pre-glued (in this embodiment, it is the protective frame edge 130 corresponding to the two long edges of the laminated piece 110). Optionally, the gluing and assembling station is divided into a gluing position and an assembling position. The frame gluing machine 170 glues the protective frame edge 130 at the gluing position, and the frame gluing machine 170 assembles the frame at the assembling position. Therefore, the embodiment of the present application has little change to the conventional assembly overall production line, especially the corresponding equipment for performing the gluing process and the frame assembling process can directly use the existing production line equipment, so that the production of the conventional assembly can be quickly switched and co-line production is realized. Moreover, the frame gluing machine 170 can still maximize the gluing speed, avoiding the need to control the amount of glue when gluing the anti-dust accumulation frame edge 120.

[0043] The process of the embodiment of the present application solves the existing beat problem: in the continuous process of the anti-dust accumulation photovoltaic assembly, a laminated piece 110 is conveyed to the material waiting station by the conveying belt 150, pre-glued on the two short edges of the laminated piece 110 by the pre-gluing machine 160, then conveyed to the gluing and assembling station, glued on the two protective frame edges 130 by the frame gluing machine 170, and assembled with the long edges of the laminated piece 110 and the protective frame edges 130, and the short edges and the anti-dust accumulation frame edges 120 (that is, for the existing frame gluing machine 170, from originally gluing and assembling all frame edges, to first gluing only the protective frame edge 130, and then installing all frame edges to complete the assembly of the laminated piece 110 around the four edges), and finally conveyed out. At the same time, the next laminated piece 110 is conveyed to the material waiting station by the conveying belt 150, and the two short edges of the laminated piece 110 are pre-glued by the pre-gluing machine 160. Therefore, the pre-gluing action on the laminated piece 110 at the material waiting station can be performed simultaneously with the gluing and assembling actions on the frame edges of the previous laminated piece 110 at the gluing and assembling station, and will not affect the smoothness of the single assembly process. Therefore, the process can shorten the single gluing time in the continuous process.

[0044] The process of the embodiment of the present application improves the process of the conventional assembly, mainly by adding the step of pre-gluing the edge corresponding to the anti-dust accumulation frame edge 120 in the laminated piece 110, solving the problem of overflow of the laminated piece 110 front, solving the problem of laminated piece 110 reverse cleaning: pre-gluing on the laminated piece 110, and then assembling with the anti-dust accumulation frame edge 120, because the anti-dust accumulation frame edge 120 moves towards the laminated piece 110 during assembly, and the laminated piece 110 is fixed, the anti-dust accumulation frame edge 120 will push the glue 141 to move to the back of the laminated piece 110, and the overflow position is the back of the laminated piece 110, preventing pollution of the assembly line; without the need for additional personnel to wipe the laminated piece 110. The process can also solve the problem of insufficient glue in the laminated piece 110: glue is applied on the laminated piece 110, and the amount of glue 141 can be controlled.

[0045] Please refer to Figure 3 and Figure 4 In some embodiments of the present application, the anti-dust accumulation frame edge 120 includes a B face 121 corresponding to the side surface of the laminated piece 110 and a groove bottom surface 122 supported on the back surface of the laminated piece 110; in the process, the glue 141 is pre-glued on the edge corresponding to the anti-dust accumulation frame edge 120 on the back surface of the laminated piece 110 (in this embodiment, it is pre-glued on the short edge of the back surface of the laminated piece 110), and the pre-glued edge of the laminated piece 110 is assembled with the anti-dust accumulation frame edge 120, and the glue 141 on the laminated piece 110 forms a glue layer 142 under the pushing of the anti-dust accumulation frame edge 120, because the anti-dust accumulation frame edge 120 moves towards the laminated piece 110 during assembly, it will push the glue 141 to move to the back of the laminated piece 110 under stress, and the glue 141 will not overflow to the front of the laminated piece 110, and the corresponding formed glue layer 142 includes a first glue layer formed between the B face 121 and the side surface of the laminated piece 110, and a second glue layer formed between the groove bottom surface 122 and the back surface of the laminated piece 110, and in the process, by controlling the front surface of the laminated piece 110 to be higher than the B face 121 and higher than the first glue layer, the anti-dust accumulation effect of the photovoltaic assembly can be improved. It can be understood that, Figure 4 The laminated piece 110 is assembled in the upward manner, but the laminated piece 110 can also be assembled in the upward manner, that is, as shown in Figure 1 and Figure 2 The groove bottom surface 122 of the frame faces upward.

[0046] In some embodiments of the present application, the thickness of the first glue layer is 0.5-1mm, and the thickness difference of the first glue layer at different positions is less than 0.35mm; the thickness of the second glue layer is 0.4-0.8mm.

[0047] In some embodiments of the present application, the distance between the glue strip formed by pre-gluing the laminated 110 and the corresponding edge of the laminated 110 (in this embodiment, the short edge) is 0-5mm, and optionally 0-3mm; the distance between the glue strip and the adjacent edge of the laminated 110 (in this embodiment, the long edge) is 0-10mm.

[0048] In some embodiments of the present application, the length of the glue strip corresponds to the length of the short edge, and the length of a single glue strip is 1303-1134mm, the width is 5-15mm (except for the glue opening point), and optionally 8-10mm, and the weight is 30-40g.

[0049] Please refer to Figure 1 In some embodiments of the present application, the protective frame edge 130 can adopt the existing conventional frame edge structure, which specifically includes the A surface 131 corresponding to the front surface of the laminated 110, the B surface 121 corresponding to the side surface of the laminated 110, and the groove bottom surface 122 supported on the back surface of the laminated 110, and the A surface 131, the B surface 121 and the groove bottom surface 122 together form a frame groove; in the process, the glue solution 141 is applied in the frame groove of the protective frame edge 130, and the laminated 110 is framed with the protective frame edge 130 to be arranged in the frame groove, and the glue solution 141 forms a glue layer 142.

[0050] The present application does not make specific limitations on the specific method of framing, and can be performed in a conventional framing manner, and specifically can adopt a translational framing manner. In some embodiments of the present application, the framing method comprises: relatively translating the edge of the laminated 110 into the corresponding frame, and keeping for a period of time.

[0051] In some embodiments of the present application, when framing, the width of the joint between adjacent frame edges (in this embodiment, the long edge and the short edge) is controlled to be <0.5mm, and the corner joint meets the existing standard; the laminated 110 edge and the frame B surface 121 allow a gap, and the gap is <1.5mm.

[0052] In some embodiments of the present application, after framing is completed, a curing step is further included, and the curing method comprises: stacking the components formed by framing in the direction of the back surface of the laminated 110 upwards, and arranging a hard gasket (such as foam cotton) between the adjacent components of the anti-dust frame 120, and then curing. In the component curing room, the front surface of the laminated 110 needs to be cured downwards, and the hard gasket is used to support the sinking and bending part of the laminated 110 caused by gravity, thereby realizing effective curing.

[0053] The features and properties of the present application are further described in detail below in combination with embodiments.

[0054] Embodiment 1 The embodiment provides a dust-proof photovoltaic module, which is prepared according to the following continuous process. The conveyor continuously conveys the back-up laminates, and the laminates are sequentially marked as laminate X1, laminate X2, laminate X3,..., and laminate Xn according to the conveying sequence. In the embodiment, the size of the laminates is 2384*1303 mm, that is, the length of the long side is 2384 mm, and the length of the short side is 1303 mm; the long side of the laminates is provided with a protective frame edge, and the short side of the laminates is provided with a dust-proof frame edge, and two protective frame edges and two dust-proof frame edges are prepared.

[0055] The process of the laminate X1 is as follows: The laminate X1 is conveyed to the material waiting station, and the two short side edges of the laminate X1 corresponding to the dust-proof frame edge are pre-glued by the pre-gluing machine. In the embodiment, the gun head type used for pre-gluing is WJ04418, the gun head parameter specification is an inner diameter of 1.55 mm, an outer diameter of 1.84 mm, and a length of 30 mm; the pre-gluing is performed along the whole short side of the laminate, that is, the length of the glue strip formed by pre-gluing is equal to the length of the short side, the distance between the glue strip formed by pre-gluing and the short side edge is controlled to be 0 mm, the width of the glue strip is 10 mm, the weight of the glue strip is 35 mm, and the gluing time is 5 s.

[0056] The laminate X1 continues to be conveyed to the gluing and framing station, and the gluing and framing machine first glues the two protective frame edges. In the embodiment, the gluing is performed along the whole protective frame edge, that is, the length of the glue strip formed by gluing is equal to the length of the protective frame edge, and the width of the glue strip formed by gluing is controlled to be 10 mm, the weight of the glue strip is 90 g, and the gluing time is 10 s; the gluing and framing machine then frames the short side edges of the laminate X1 with the dust-proof frame edges one by one and frames the long side edges with the protective frame edges one by one.

[0057] The laminate X2 is processed according to the same process as described above, and the process rhythm is controlled so that when the laminate X2 is conveyed to the material waiting station, the laminate X1 has been conveyed to the gluing and framing station, the pre-gluing operation of the laminate X2 in the material waiting station is performed at the same time as the gluing operation of the laminate X1 in the gluing and framing station; and the laminate X2 is conveyed to the gluing and framing station to perform the corresponding operation.

[0058] The laminates X3,..., and Xn are sequentially processed according to the same process as the laminate X2.

[0059] According to statistics, the total gluing time of the continuous process of n photovoltaic modules is (5+10n) s.

[0060] Embodiments 2-7 The embodiment provides a dust-proof photovoltaic module, and the difference between the process and that of the embodiment 1 is shown in Table 1.

[0061] Comparative Example 1 The present comparative example provides a photovoltaic module, which is prepared according to the following continuous process: The conveyor continuously transports the back-up laminates, which are sequentially marked as laminate X1, laminate X2, laminate X3, …, laminate Xn according to the conveying order. In the present comparative example, the size of the laminates is 2384*1303 mm, i.e. the length of the long side is 2384 mm and the length of the short side is 1303 mm; the long side and the short side of the laminates are both provided with protective frame edges, and a total of four protective frame edges are prepared, two of which have the same length as the long side of the laminates, and the other two have the same length as the short side of the laminates.

[0062] The process of the laminate X1 is as follows: The laminate X1 is conveyed to the gluing and framing station, and the gluing and framing machine glues the four protective frame edges. In the present embodiment, the gluing is performed along the entire protective frame edge, i.e. the length of the glue strip formed by gluing is equal to the length of the corresponding protective frame edge, and the width of the glue strip formed by gluing on the protective frame edge corresponding to the short side is controlled to be 10 mm, and the weight of the glue strip is 90 g, and the width of the glue strip formed by gluing on the protective frame edge corresponding to the long side is 10 mm, and the weight of the glue strip is 260 g, and the gluing time is 15 S; the gluing and framing machine further frames the short side edge of the laminate X1 with the corresponding protective frame edge and frames the long side edge with the corresponding protective frame edge.

[0063] The laminate X2 is processed according to the same process as described above. Since the laminate X1 is in the gluing and framing machine, the laminate X2 can only be conveyed to the gluing and framing station for operation after the laminate X1 completes the gluing and framing operation in the gluing and framing station and is conveyed out.

[0064] The laminates X3, …, Xn are processed according to the same process as the laminate X2.

[0065] According to statistics, the total gluing time for the continuous process of n photovoltaic modules in the present comparative example is 15n S.

[0066] The photovoltaic modules of the comparative examples and the working examples are detected, and some of the results are shown in Table 1.

[0067] Table 1 Process parameters and performance of different photovoltaic modules

[0068] In combination with Table 1 and the related detection results: According to the appearance detection of the photovoltaic modules, the back of the modules of Examples 1-7 is uniformly overflowed with glue according to the pre-gluing mode shown in Table 1, and the front of the modules is not overflowed with glue, which meets the appearance requirements.

[0069] Through photovoltaic module performance detection, the photovoltaic modules prepared by the process of the examples 1-7 all meet the load requirements of 5400 Pa on the front side and 2400 Pa on the back side, and the power generation also meets the product standard requirements, and has a certain degree of gain relative to the comparative example 1, the reason is that the part of the edge of the photovoltaic module of the example adopts the anti-dust frame edge, which cancels the A surface of the lamination part light receiving surface relative to the protection frame edge.

[0070] For the continuous process of n blocks (n>1) of photovoltaic modules, the total time of the glueing of the comparative example 1 is 15n S, and the total time of the glueing of the examples 1-8 is (5+10n) S, which can significantly shorten the glueing time, thereby shortening the process cycle.

[0071] In summary, the process of the anti-dust photovoltaic module of the example can not only shorten the process cycle, but also reduce the overflow of the glue to the front side of the lamination part.

[0072] The above only describes the examples of the present application and is not used to limit the protection scope of the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A manufacturing process for an anti-dust-accumulation photovoltaic module, the anti-dust-accumulation photovoltaic module comprising a laminate and a frame disposed around the laminate, the frame including at least one anti-dust-accumulation frame edge, the anti-dust-accumulation frame edge having no A-side, characterized in that, The manufacturing process includes the following steps: With the back side of the laminate facing up, pre-apply adhesive to the edge of the back side corresponding to the edge of the anti-dust frame. Apply adhesive to the frame edge corresponding to the edge of the laminate that has not been pre-applied adhesive. The laminate is framed with all frame edges.

2. The manufacturing process of the anti-dust-accumulation photovoltaic module according to claim 1, characterized in that, The laminate is rectangular, and the frame includes two anti-dust frame edges corresponding to two opposite edges of the laminate, and two protective frame edges corresponding to the other two edges of the laminate. The protective frame edges have an A-side. In the manufacturing process, pre-adhesive is applied to the two edges of the laminate corresponding to the anti-dust frame edges, and adhesive is applied to the two protective frame edges.

3. The manufacturing process of the anti-dust-accumulation photovoltaic module according to claim 1 or 2, characterized in that, The anti-dust frame includes a B-side corresponding to the side of the laminate and a groove bottom surface supporting the back of the laminate; In the manufacturing process, the laminate and the anti-dust frame are framed to form a first adhesive layer between the B side and the side of the laminate, and a second adhesive layer is formed between the bottom of the groove and the back of the laminate. The front of the laminate is higher than the B side and higher than the first adhesive layer.

4. The manufacturing process of the anti-dust-accumulation photovoltaic module according to claim 2, characterized in that, The protective frame includes an A surface that covers the front of the laminate, a B surface that corresponds to the side of the laminate, and a groove bottom surface that supports the back of the laminate. The A surface, the B surface, and the groove bottom surface together constitute the frame groove. In the manufacturing process, the laminate and the protective frame are framed together so that the laminate is placed in the frame groove.

5. The manufacturing process of the anti-dust-accumulation photovoltaic module according to claim 1, characterized in that, The distance between the adhesive strip formed by pre-applying adhesive to the laminate and the corresponding edge of the laminate is 0-5 mm, and can be selected as 0-3 mm.

6. The manufacturing process of the anti-dust-accumulation photovoltaic module according to claim 5, characterized in that, Each strip of the adhesive is 1303-1134mm long, 5-15mm wide, and weighs 30-40g.

7. The manufacturing process of the anti-dust-accumulation photovoltaic module according to claim 1, characterized in that, The method of framing includes: relatively translating the edge of the laminate into the corresponding frame and holding it for a period of time.

8. The manufacturing process of the anti-dust-accumulation photovoltaic module according to claim 1, characterized in that, When framing, control the joint width between adjacent frame edges to be less than 0.5mm.

9. The manufacturing process of the anti-dust-accumulation photovoltaic module according to claim 1, characterized in that, After framing is completed, a curing step is also included. The curing method includes: stacking the framed components in the direction of the back side of the laminate facing upward, and placing rigid gaskets between the anti-dust frame edges of adjacent components, and then curing.

10. A manufacturing line for implementing the process technology of anti-dust-accumulation photovoltaic modules as described in any one of claims 1 to 9, characterized in that, It includes: The conveyor belt is used to transport laminated parts, and the conveyor belt is provided with a waiting station and a gluing and framing station in sequence along the conveying direction. A pre-applied glue machine is installed at the material waiting station and is used to pre-apply glue to the laminate. A framing and gluing machine is installed at the gluing and framing station and is used to apply glue to the frame edges and to frame the laminated component to the frame edges.

Images