Laminating tool for photovoltaic laminated piece

Abstract

The utility model relates to the technical field of new energy, and discloses a lamination tool for a photovoltaic laminated piece, which comprises a first tool assembled at the position of a corresponding bus bar of the photovoltaic laminated piece and a second tool assembled at the side edge of the photovoltaic laminated piece, a bus bar is arranged in the photovoltaic laminated piece, and the bus bar is provided with a bus bar outgoing line; each of the first tool and the second tool comprises a tool main body assembled on the surface of the photovoltaic laminated part; the inner surface of the tool body is further provided with a groove body, the groove body is correspondingly arranged at the position of a bus bar of the photovoltaic laminated part, and the local area of the groove body is further provided with a main exhaust hole penetrating through the upper surface and the lower surface of the tool body. The laminating tool not only ensures that the glue overflow at the leading-out hole of the bus bar leading-out wire is good, but also solves the problem of paint falling of the black bus bar, and can improve the yield of the laminated photovoltaic module; the laminating tool can meet the laminating use of various series of double-glass photovoltaic modules (such as transparent double-glass photovoltaic modules, white glazed double-glass photovoltaic modules and black double-glass photovoltaic modules).

Description

Technical Field

[0001] The utility model relates to the technical field of new energy, and particularly relates to a laminating tooling for a photovoltaic laminate. Background Art

[0002] Generally, a photovoltaic laminate includes a photovoltaic front plate (such as front plate glass) for lamination, a photovoltaic cell, a photovoltaic back plate (such as back plate glass or photovoltaic back film), and an encapsulation adhesive film. Encapsulation adhesive films need to be filled between the photovoltaic front plate and the photovoltaic cell, and between the photovoltaic back plate and the photovoltaic cell, so as to obtain a photovoltaic module through lamination and encapsulation. Among them, the photovoltaic cell includes a plurality of cell sheets, and the plurality of cell sheets are connected in series through busbars laid thereon. The current of the plurality of cell sheets can be led out to the outside of the photovoltaic module through the busbar lead-out wires connecting the busbars, so as to provide electric energy for external electrical equipment. In practice, however, a laminating tooling is often needed to complete the lamination and encapsulation between the layers of the photovoltaic laminate.

[0003] Most of the existing laminating toolings used for manufacturing photovoltaic modules are "L"-shaped corner protection toolings (as shown in CN115312612A) or frame toolings (as shown in CN220732685U). The functions of these existing laminating toolings are relatively single, mainly used to solve the problem of glue overflow at the corners of the photovoltaic laminate. Moreover, the frame tooling has a large volume and is not convenient to take, and cannot be applied to photovoltaic laminates of all sizes.

[0004] Furthermore, the existing laminating tooling is mainly applied to the manufacture of ordinary double-glass photovoltaic modules, and ordinary double-glass photovoltaic modules use silver busbars. For black double-glass photovoltaic modules, black busbars are used. If the existing laminating tooling is used to laminate black photovoltaic laminates, during the lamination process, the black busbars laid on the surface of the photovoltaic cells are easily subjected to excessive lamination pressure, so the paint on the black busbars will fall off, which will cause the appearance of the laminated photovoltaic module to be defective, greatly reducing the product yield rate of the photovoltaic module. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a laminating tooling for a photovoltaic laminate.

[0006] Based on this, the present utility model discloses a lamination tooling for a photovoltaic laminate. A bus bar is provided in the photovoltaic laminate, and a bus bar lead-out wire is provided on the bus bar. The lamination tooling further includes a first tooling assembled at the position corresponding to the bus bar of the photovoltaic laminate and a second tooling assembled at the side of the photovoltaic laminate. Both the first tooling and the second tooling include a tooling main body assembled on the surface of the photovoltaic laminate. A groove body is further provided on one surface of the tooling main body in contact with the photovoltaic laminate. The groove body is correspondingly arranged at the position of the bus bar of the photovoltaic laminate, and a main exhaust hole penetrating the upper and lower surfaces of the tooling main body is provided in a partial area of the groove body.

[0007] Preferably, both the width of the main exhaust hole and the width of the groove body are at least 6 mm larger than the width of the bus bar.

[0008] Preferably, the tooling main body of the first tooling is further provided with a split lead-out hole for the bus bar lead-out wire to pass through. The split lead-out hole corresponds to the position of the bus bar lead-out wire. The split lead-out hole includes a plurality of limiting holes arranged in sequence. Each limiting hole allows one lead-out wire to pass through, and adjacent two limiting holes are separated by a partition block.

[0009] The width of the limiting hole is at least 1 mm larger than the width of the bus bar.

[0010] Preferably, a limiting block assembled on the outer side surface of the photovoltaic laminate is provided at the edge of the tooling main body.

[0011] The limiting block is formed by extending downward from the bottom of the edge of the tooling main body. Limiting blocks in the shape of "|" are provided on both edges of the tooling main body of the first tooling along the length direction of the tooling main body, and limiting blocks in the shape of "∟" are provided at the positions corresponding to the corners of the photovoltaic laminate on the tooling main body of the second tooling.

[0012] Further preferably, fixing columns for limiting the front plate glass and / or the back plate glass of the photovoltaic laminate are provided on the inner side surface of the limiting block.

[0013] Even more preferably, the fixing column is a trapezoidal column. The wide side of the trapezoidal column is connected to the inner side surface of the limiting block, and the narrow side of the trapezoidal column contacts the outer side surface of the front plate glass and / or the back plate glass of the photovoltaic laminate.

[0014] The distance between the contact surfaces of the fixing column and the photovoltaic laminate is 1 - 2 mm.

[0015] Further preferably, a side exhaust structure is provided on the side surface of the limiting block, and redundant gas can be discharged during lamination and evacuation.

[0016] Preferably, a glass corner protection groove is further provided at the position corresponding to the corner of the photovoltaic laminate on the tooling main body of the second tooling.

[0017] Preferably, the lamination tooling adopts a split-type lamination tooling. The first tooling is assembled at the middle position of the photovoltaic lamination component. The number of the second toolings is two, and the two second toolings are respectively assembled at the side edges corresponding to the short sides of the photovoltaic lamination component. And both between the first tooling and the photovoltaic lamination component and between the second tooling and the photovoltaic lamination component are adhesively bonded by tapes to fix the first tooling and the second tooling on the photovoltaic lamination component.

[0018] Preferably, the thickness of the plate used for the tooling main body is 1.2 - 2.4 mm;

[0019] The plate of the tooling main body includes two outer wrapping layers and an epoxy resin base layer arranged between the two outer wrapping layers. The thickness of the epoxy resin base layer is 1 - 2 mm, and the thickness of each outer wrapping layer is 0.1 - 0.2 mm;

[0020] The outer wrapping layer is a tetrafluoro cloth or a Teflon cloth (more preferably a tetrafluoro cloth).

[0021] Compared with the prior art, the present utility model has at least the following beneficial effects:

[0022] For the lamination tooling for a photovoltaic lamination component of the present utility model, a groove body is arranged on one surface of the tooling main body in contact with the photovoltaic lamination component, and main exhaust holes penetrating through the upper and lower surfaces of the tooling main body are also arranged in a partial area of the groove body. The positions of the groove body and the main exhaust holes correspond to the positions of the busbars of the photovoltaic lamination component; in this way, both the groove body and the main exhaust holes can relieve the lamination pressure at the positions of the busbars of the photovoltaic lamination component, effectively avoiding the problem that the lamination tooling over-presses the busbars due to a relatively large lamination pressure, thereby causing paint peeling on the surface of the busbars (especially black busbars); moreover, when laminating and evacuating, the main exhaust holes can also discharge redundant gases. In this way, not only is the glue overflow at the lead-out hole position of the busbar lead-out wire ensured to be good, but also the paint peeling problem of the black busbars of the photovoltaic lamination component is effectively solved, and thus the yield rate of the laminated photovoltaic module can be improved; moreover, the lamination tooling has multiple functions and can meet the lamination use of various series of double-glass photovoltaic modules (such as transparent double-glass photovoltaic modules, white enameled double-glass photovoltaic modules, black double-glass photovoltaic modules). In addition, the lamination tooling is preferably a split-type lamination tooling, which is more convenient and flexible to take and assemble. Description of the Drawings

[0023] Figure 1 It is a schematic assembly structure diagram of the lamination tooling and the photovoltaic lamination component of this embodiment.

[0024] Figure 2 It is a bottom view of the first tooling in the lamination tooling of this embodiment.

[0025] Figure 3 It is Figure 2 a partial enlarged view of the label A in

[0026] Figure 4 The bottom view of the second tooling in the laminating tooling of this embodiment.

[0027] Figure 5 Is Figure 4 The partial enlarged view of the label B in the figure.

[0028] Figure 6 The external structure schematic diagram of the first tooling in the laminating tooling of this embodiment.

[0029] Figure 7 Is Figure 6 The partial enlarged view of the label C in the figure.

[0030] Figure 8 The external structure schematic diagram of the second tooling in the laminating tooling of this embodiment.

[0031] Figure 9 Is Figure 8 The partial enlarged view of the label D in the figure.

[0032] Figure 10 The partial structure schematic diagram of the assembly of the second tooling and the photovoltaic laminate in the laminating tooling of this embodiment.

[0033] Figure 11 The screenshot structure schematic diagram of the plate used for the tooling main body in the laminating tooling of this embodiment.

[0034] Explanation of the reference numerals in the attached drawings: Photovoltaic laminate 1; Busbar lead-out wire 11; First tooling 2; Second tooling 3; Tooling main body 4; Groove body 41; Main exhaust hole 42; Split lead-out hole 43; Limit hole 431; Partition block 432; Limit block 44; Fixed column 45; Side exhaust structure 46; Glass corner protection groove 47; Outer wrapping layer 48; Epoxy resin base layer 49; Tape 5. Detailed implementation manners

[0035] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0036] Embodiment

[0037] A laminating tooling for a photovoltaic laminate in this embodiment, see Figures 1-9 , including a first tooling 2 assembled at the corresponding busbar position of the photovoltaic laminate 1 and a second tooling 3 assembled at the side of the photovoltaic laminate 1. In the prior art, a busbar is usually provided in the photovoltaic laminate 1, and a busbar lead-out wire 11 is also provided on the busbar.

[0038] In an example of this embodiment, the laminating tooling for the photovoltaic laminate uses a split-type laminating tooling (that is, the first tooling 2 and two second toolings 3 are separately arranged), which is convenient for taking and operating. At this time, the first tooling 2 is assembled at the middle position of the photovoltaic laminate 1, and the two second toolings 3 are respectively assembled at the side edges corresponding to the short sides of the photovoltaic laminate 1. And tapes 5 (such as Figure 1 as shown) are used for bonding between the first tooling 2 and the photovoltaic laminate 1, and between the second tooling 3 and the photovoltaic laminate 1, so as to fix the first tooling 2 and the second tooling 3 on the photovoltaic laminate 1.

[0039] In an example of this embodiment, the laminating tooling for the photovoltaic laminate uses a combined-type laminating tooling (that is, the first tooling 2 and two second toolings 3 are connected into one body). At this time, the use of the high-temperature tape 5 can be cancelled.

[0040] In this embodiment, the laminating tooling for the photovoltaic laminate is preferably a split-type laminating tooling; this split-type laminating tooling in this embodiment can meet the laminating use of various series of double-glass photovoltaic modules (such as transparent double-glass photovoltaic modules, white enameled double-glass photovoltaic modules, black double-glass photovoltaic modules), and the taking and assembling are more convenient and flexible.

[0041] Among them, both the first tooling 2 and the second tooling 3 include a tooling main body 4 (such as Figures 2-9 as shown) assembled on the upper surface of the photovoltaic laminate 1. A limiting block 44 (such as Figures 2-5 , 7, 9 shown) assembled on the outer side surface of the photovoltaic laminate 1 is provided at the edge of the tooling main body 4.

[0042] Specifically, the limiting block 44 extends downward from the bottom of the edge of the tooling main body 4; both edges of the tooling main body 4 of the first tooling 2 along the length direction of the tooling main body 4 are provided with limiting blocks 44 in the shape of "∣" (such as Figures 2-3 , 7 shown), and the positions of the tooling main body 4 of the second tooling 3 corresponding to the corners of the photovoltaic laminate 1 are provided with limiting blocks 44 in the shape of "∟" (such as Figures 4-5 , 9 shown).

[0043] The tooling main body 4 and the limiting block 44 cooperate to realize the wrapping of the photovoltaic laminate 1 (specifically, the tooling main body 4 covers the upper surface of the photovoltaic laminate 1, and the limiting block 44 covers the outer side surface of the photovoltaic laminate 1). Because the limiting block 44 has a certain height of downward extension, it can play a role in protecting the photovoltaic laminate 1, avoid the photovoltaic laminate 1 from bursting due to excessive pressure in the cavity during lamination, and can also reduce the pressure on the four corner positions of the photovoltaic laminate 1 during lamination, reduce the overflow of the encapsulation adhesive film at the corners, and make the encapsulation adhesive film at the four corner positions of the photovoltaic laminate 1 filled more.

[0044] Among them, a fixing column 45 for limiting the front plate glass and / or back plate glass of the photovoltaic laminate 1 is further provided on the inner side surface of the limiting block 44 (as shown in Figure 3 , 5 , and 10). The fixing column 45 plays a role in limiting the front plate glass and / or back plate glass of the photovoltaic laminate 1, preventing misalignment defects of the front plate glass and the back plate glass, and further improving the yield rate of the laminated photovoltaic module.

[0045] Furthermore, the fixing column 45 is preferably a trapezoidal column. The wide side of the trapezoidal column is connected to the inner side surface of the limiting block 44, while the narrow side of the trapezoidal column contacts the outer side surface of the front plate glass and / or back plate glass of the photovoltaic laminate 1. In this way, the contact area of the fixing column 45 with the overflow glue of the photovoltaic laminate 1 can be reduced, preventing the overflow glue adhesion between the lamination tooling and the photovoltaic laminate 1, so as to avoid difficulty in taking the lamination tooling or the photovoltaic module after lamination.

[0046] Furthermore, the contact surface spacing between the fixing column 45 and the photovoltaic laminate 1 is 1 - 2 mm. If the contact surface spacing between the fixing column 45 and the photovoltaic laminate 1 is too large, it will affect the limiting effect of the fixing column 45 on the front plate glass and / or back plate glass; if the contact surface spacing between the fixing column 45 and the photovoltaic laminate 1 is too small, it will affect the effect of the overflow glue encapsulation of the photovoltaic laminate 1.

[0047] Among them, a side exhaust structure 46 is further provided on the side surface of the limiting block 44 (as shown in Figure 3 , 5 , 7, and 9 - 10), and the excess gas can be discharged during lamination and evacuation. Specifically, the side exhaust structure 46 can be a side exhaust hole or a side exhaust groove.

[0048] Among them, a groove body 41 is further provided on the inner surface of the tooling main body 4 (i.e., the surface of the tooling main body 4 that contacts the photovoltaic laminate 1) (as shown in Figure 2 , 4 , and 10). The groove body 41 is correspondingly arranged at the position of the bus bar of the photovoltaic laminate 1; a main exhaust hole 42 penetrating the upper and lower surfaces of the tooling main body 4 is further provided in a partial area of the groove body 41 (as shown in Figures 1-2 , 4, 6, 8, and 10).

[0049] When the photovoltaic laminate 1 is laminated, the lamination pressure is relatively large. And the positions of the groove body 41 and the main exhaust hole 42 both correspond to the position of the bus bar of the photovoltaic laminate 1 (at this time, the position of the groove body 41 coincides with the position of the bus bar); in this way, both the groove body 41 and the main exhaust hole 42 can relieve the lamination pressure at the position of the bus bar of the photovoltaic laminate 1, effectively avoiding the problem that the lamination tooling overpresses the bus bar due to the relatively large lamination pressure, which may cause paint peeling on the surface of the bus bar (especially the black bus bar); moreover, during lamination and evacuation, the main exhaust hole 42 can also discharge the excess gas, so as not to affect the yield rate of the laminated photovoltaic module.

[0050] Furthermore, the width of the main exhaust hole 42 and the groove body 41 is at least 6 mm greater than the width of the busbar. In this way, the problem of paint peeling on the surface of the busbar (especially the black busbar) during lamination can be further avoided.

[0051] The thickness of the plate used for the tooling body 4 is 1.2-2.4 mm, preferably 1.6 mm; this preferred thickness is the best thickness, which can ensure that the black busbar does not lose paint during lamination, and can also ensure good glue overflow at the lead-out hole of the busbar lead-out wire 11. This is because: if the plate used for the tooling body 4 is too thick, the packaging film will not be pressed solid during lamination, and there will be a virtual glue situation; if the plate used for the tooling body 4 is too thin, the black busbar will lose paint during lamination.

[0052] Specifically, the plate of the tool body 4 includes two outer wrapping layers 48 and an epoxy resin base layer 49 (such as Figure 11 As shown). The thickness of the epoxy resin base layer 49 is 1-2 mm (preferably 1.3 mm), and the thickness of each outer wrapping layer 48 is 0.1-0.2 mm (preferably 0.15 mm). The outer wrapping layer 48 is tetrafluoro cloth or Teflon cloth, preferably tetrafluoro cloth. The outer surface of the epoxy resin base layer 49 is protected by tetrafluoro cloth, which can further reduce the wear of the tooling.

[0053] Among them, see Figures 1-2 6. The tooling body 4 of the first tooling 2 is also provided with a separate lead-out hole 43 for the bus bar lead-out line 11 to pass through. The separate lead-out hole 43 corresponds to the position of the bus bar lead-out line 11. The separate lead-out hole 43 includes a plurality of limiting holes 431 arranged in sequence. Each limiting hole 431 is for one lead-out hole to pass through, and two adjacent limiting holes 431 are separated by a partition block 432.

[0054] The separate lead-out holes 43 can limit the busbar lead-out wires 11, prevent the busbar lead-out wires 11 from being skewed during the lamination process, and avoid difficulties in the subsequent installation of the junction box (the busbar lead-out wires 11 that pass through the junction box lead the photovoltaic power generation current to the external power-consuming equipment). The partition block 432 can separate the multiple busbar lead-out wires 11 (usually two busbar lead-out wires 11, i.e., the positive busbar lead-out wire 11 and the negative busbar lead-out wire 11) that are led out simultaneously, so that the multiple busbar lead-out wires 11 that are separated can pass through the corresponding limit holes 431 respectively, avoiding the multiple busbar lead-out wires 11 from being attached to each other or being adhered together by the packaging film.

[0055] Furthermore, the width of the limiting hole 431 is at least 1 mm greater than the width of the bus bar to prevent the bus bar from being skewed after lamination.

[0056] Among them, a glass corner protection groove 47 is also provided at a position of the tooling main body 4 of the second tooling 3 corresponding to the corner of the photovoltaic laminate 1 (as shown in Figure 5 , 9 -10); it can effectively avoid the phenomenon that the photovoltaic laminate 1 is touched by the second tooling 3 at the corner, which may cause the photovoltaic module to burst, and further improve the yield rate of the laminated photovoltaic module.

[0057] Although the preferred embodiments of the embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they learn the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the present invention.

[0058] The technical solution provided by the present invention has been introduced in detail above. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A laminating tool for a photovoltaic laminate, wherein a bus bar is provided in the photovoltaic laminate, and the bus bar is provided with a bus bar lead wire; characterized in that: The lamination tooling also includes a first tooling assembled at the corresponding bus bar position of the photovoltaic laminate and a second tooling assembled at the side of the photovoltaic laminate; the first tooling and the second tooling both include a tooling body assembled on the surface of the photovoltaic laminate; a surface of the tooling body in contact with the photovoltaic laminate is also provided with a groove body, the groove body is arranged correspondingly at the bus bar position of the photovoltaic laminate, and a local area of ​​the groove body is also provided with a main exhaust hole that passes through the upper and lower surfaces of the tooling body.

2. A laminating tool for photovoltaic laminates according to claim 1, characterized in that: The widths of the main exhaust hole and the groove body are at least 6 mm greater than the width of the bus bar.

3. A laminating tool for photovoltaic laminates according to claim 1, characterized in that: The tool body of the first tool is also provided with a separate lead-out hole for the busbar lead-out line to pass through, and the separate lead-out hole corresponds to the position of the busbar lead-out line; the separate lead-out hole includes a plurality of sequentially arranged limiting holes, each limiting hole is for a lead-out hole to pass through, and two adjacent limiting holes are separated by a partition block; The width of the limiting hole is at least 1 mm greater than the width of the bus bar.

4. A laminating tool for photovoltaic laminates according to claim 1, characterized in that: The edge of the tooling body is provided with a limit block mounted on the outer side of the photovoltaic laminate; The limit block is formed by extending downward from the bottom of the edge of the tooling body; the two edges of the tooling body of the first tooling along the length direction of the tooling body are provided with "∣"-shaped limit blocks, and the positions of the tooling body of the second tooling corresponding to the corners of the photovoltaic laminate are provided with "∟"-shaped limit blocks.

5. A laminating tool for photovoltaic laminates according to claim 4, characterized in that: The inner side surface of the limiting block is also provided with fixing columns for limiting the front plate glass and / or the back plate glass of the photovoltaic laminate.

6. A laminating tool for photovoltaic laminates according to claim 5, characterized in that: The fixing column is a trapezoidal column, the wide side of the trapezoidal column is connected to the inner side of the limit block, and the narrow side of the trapezoidal column contacts the outer side of the front plate glass and / or the back plate glass of the photovoltaic laminate; The contact surface spacing between the fixing posts and the photovoltaic laminate is 1-2 mm.

7. A laminating tool for photovoltaic laminates according to claim 4, characterized in that: The side of the limit block is also provided with a side exhaust structure, which can exhaust excess gas during lamination vacuuming.

8. The laminating tool for photovoltaic laminates according to claim 1, characterized in that: A glass corner protection groove is also provided at a position of the tool body of the second tool corresponding to the corner of the photovoltaic laminate.

9. A laminating tool for photovoltaic laminates according to claim 1, characterized in that: The lamination tooling adopts a split lamination tooling, in which the first tooling is assembled in the middle position of the photovoltaic laminate, and the number of the second tooling is two, and the two second toolings are respectively assembled on the side edges of the corresponding short sides of the photovoltaic laminate, and the first tooling and the photovoltaic laminate, as well as the second tooling and the photovoltaic laminate are both bonded by tape to fix the first tooling and the second tooling on the photovoltaic laminate.

10. The laminating tool for photovoltaic laminates according to claim 1, characterized in that: The thickness of the plate used for the tooling body is 1.2-2.4 mm; The plate of the tooling body includes two outer wrapping layers and an epoxy resin base layer disposed between the two outer wrapping layers, the epoxy resin base layer has a thickness of 1-2 mm, and the thickness of each outer wrapping layer has a thickness of 0.1-0.2 mm; The outer wrapping layer is tetrafluoroethylene cloth or Teflon cloth.

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