Photovoltaic lamination auxiliary member, photovoltaic lamination member to be laminated and photovoltaic lamination system

Abstract

The utility model discloses a photovoltaic lamination auxiliary member, a photovoltaic lamination member to be laminated and a photovoltaic lamination system, which are applied to the photovoltaic field, the photovoltaic lamination auxiliary member is provided with a groove structure corresponding to a back plate lead-out hole of the photovoltaic lamination member, so that the photovoltaic lamination auxiliary member is in contact with a back plate of the photovoltaic lamination member during lamination processing, and the back plate lead-out hole of the photovoltaic lamination member is in contact with the back plate lead-out hole of the photovoltaic lamination member. And leading-out wires at the corresponding back plate leading-out holes are accommodated in the groove structures. According to the utility model, the photovoltaic lamination auxiliary member is additionally arranged before lamination processing, and the photovoltaic lamination auxiliary member is additionally arranged around each leading-out wire, so that the leading-out wires are not in contact with the lower pressing plate of the laminating machine when the lamination processing is carried out on the lamination member, the root parts of the leading-out wires are prevented from being stressed, and the service life of the leading-out wires is prolonged. Therefore, the problem that the black bus bar at the hole becomes white is solved, and the aesthetic property of the prepared photovoltaic module is improved.

Description

Technical Field

[0001] This utility model relates to the photovoltaic field, and in particular to a photovoltaic lamination auxiliary component, a photovoltaic laminate to be laminated, and a photovoltaic lamination system. Background Technology

[0002] Taking a black double-glass photovoltaic module as an example, in order to ensure the aesthetics of the module during production, black busbars are generally used to collect the current in the grid lines, and lead-out holes are opened on the back panel of the photovoltaic module. The internal current is then discharged through the lead-out holes using lead-out wires. However, after the module is laminated, the glue plate on the laminator directly presses onto the lead-out position of the laminate, causing the lead-out wire to be stressed. The root of the lead-out wire pushes against the front glass of the laminate, resulting in a lack of glue at the root of the lead-out wire. Consequently, the black busbar at the lead-out hole position appears white, affecting the aesthetics of the manufactured module. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a photovoltaic lamination auxiliary component, a photovoltaic stack to be laminated, and a photovoltaic lamination system, which solves the problem in the prior art where the root of the lead wire is missing adhesive, which causes the black busbar at the lead hole position to appear white, affecting the aesthetics of the manufactured component.

[0004] To solve the above-mentioned technical problems, this utility model provides a photovoltaic lamination auxiliary component. The photovoltaic lamination auxiliary component is provided with a groove structure corresponding to the back plate lead-out hole of the photovoltaic stack, so that the photovoltaic lamination auxiliary component contacts the back plate of the photovoltaic stack during the lamination process. The groove structure accommodates the lead wire at the corresponding back plate lead-out hole.

[0005] Optionally, the depth of the groove structure is greater than or equal to the height of the lead wire protruding from the backplate of the photovoltaic stack.

[0006] Optionally, the depth of the groove structure is 2 mm to 5 mm.

[0007] Optionally, the groove structure is a bottomless groove that extends through the photovoltaic lamination auxiliary component along the depth direction.

[0008] Optionally, the photovoltaic lamination auxiliary component includes multiple auxiliary sub-components, each of which corresponds to one of the backsheet lead-out holes.

[0009] Optionally, the auxiliary sub-component is a rubber pad;

[0010] The outer contour of the rubber pad is 95 mm to 115 mm in length and 50 mm to 70 mm in width;

[0011] The groove structure is 45 mm to 55 mm long and 10 mm to 20 mm wide.

[0012] Optionally, the photovoltaic lamination auxiliary component includes a plurality of strip-shaped auxiliary sub-components formed corresponding to the arrangement direction of the backsheet lead-out holes;

[0013] Each of the strip-shaped auxiliary sub-components is provided with multiple groove structures.

[0014] This utility model also provides a photovoltaic laminate to be laminated, comprising:

[0015] Photovoltaic laminates, and photovoltaic lamination auxiliary components as described above;

[0016] The photovoltaic lamination auxiliary component is connected to the back plate of the photovoltaic stack so that the groove structure can accommodate the lead wire corresponding to the back plate of the photovoltaic stack.

[0017] This utility model also provides a photovoltaic lamination system, including:

[0018] Laminators, and photovoltaic lamination accessories as described above;

[0019] The lower platen of the laminator is connected to the photovoltaic lamination auxiliary component, and the photovoltaic lamination auxiliary component has a groove structure on the side facing away from the lower platen that corresponds to the back plate lead-out hole of the photovoltaic stack, so that the photovoltaic lamination auxiliary component contacts the back plate of the photovoltaic stack during the lamination process, and the groove structure contains the lead wire at the corresponding back plate lead-out hole.

[0020] Optionally, the lower pressure plate and the photovoltaic lamination auxiliary component are an integral structure.

[0021] As can be seen, this utility model provides a photovoltaic lamination auxiliary component. This photovoltaic lamination auxiliary component has a groove structure corresponding to the backsheet lead-out holes of the photovoltaic stack, so that the photovoltaic lamination auxiliary component contacts the backsheet of the photovoltaic stack during lamination. The groove structure accommodates the lead-out wires at the corresponding backsheet lead-out holes. This utility model, by adding an extra photovoltaic lamination auxiliary component before lamination, and by adding this auxiliary component around each lead-out wire position, ensures that the lead-out wires do not contact the lower platen of the laminator during lamination, avoiding stress on the root of the lead-out wires, thereby solving the problem of the black busbars turning white at the holes and improving the aesthetics of the manufactured photovoltaic modules.

[0022] In addition, this utility model also provides a photovoltaic laminate to be laminated and a photovoltaic lamination system, which also have the above-mentioned beneficial effects. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 A schematic diagram of the structure of a photovoltaic lamination auxiliary component provided in an embodiment of this utility model;

[0025] Figure 2 This is a schematic diagram of another photovoltaic lamination auxiliary component provided in an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of a structure in which photovoltaic lamination auxiliary components are arranged on the surface of a photovoltaic laminate, according to an embodiment of the present invention.

[0027] Figure 4 Here is an example diagram of an existing photovoltaic laminate;

[0028] Figure 5 An example diagram of a photovoltaic stack with photovoltaic lamination auxiliary components provided for an embodiment of this utility model;

[0029] Figure 6 Another example diagram showing the arrangement of photovoltaic lamination auxiliary components on the surface of a photovoltaic laminate, provided by an embodiment of this utility model;

[0030] Figure 7 An example diagram of a photovoltaic laminate to be laminated is provided for an embodiment of this utility model;

[0031] Figure 8 This is a schematic diagram of the structure of a photovoltaic laminate to be laminated, provided as an embodiment of the present invention.

[0032] Figure 9 A top view of a photovoltaic lamination system provided in an embodiment of this utility model;

[0033] The annotations in the attached figures are explained as follows:

[0034] 1-Lead-out wire, 2-Lower pressure plate, 10-Photovoltaic lamination auxiliary component, 11-Groove structure, 111-Bottomless groove, 12-Auxiliary sub-component, 13-Strip auxiliary sub-component. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] Example 1:

[0037] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a photovoltaic lamination auxiliary component 10 provided in an embodiment of the present invention. The photovoltaic lamination auxiliary component 10 is provided with a groove structure 11 corresponding to the back plate lead-out hole of the photovoltaic laminate, so that the photovoltaic lamination auxiliary component 10 contacts the back plate of the photovoltaic laminate during the lamination process, and the groove structure 11 accommodates the lead wire at the corresponding back plate lead-out hole.

[0038] It should be noted that in this embodiment, the photovoltaic stack needs to undergo lamination. During lamination, the pressure plate in the lamination system acts on the back sheet of the photovoltaic stack, squeezing it. The back sheet of the photovoltaic stack has a back sheet lead-out hole for leading the lead wire out of the photovoltaic stack. The end of the lead wire extends beyond the surface of the back sheet. Therefore, the groove structure 11 of the photovoltaic lamination auxiliary component 10 is set to correspond to the back sheet lead-out hole. At this time, the end of the lead wire extending out of the back sheet is accommodated by the groove structure 11 in the photovoltaic lamination auxiliary component 10, so as to avoid the pressure plate in the photovoltaic lamination system diagram directly contacting the end of the lead wire. The photovoltaic lamination auxiliary component 10 buffers the downward pressure generated by the pressure plate, preventing the pressure plate from acting on the end of the lead wire, causing the root of the lead wire to hit the front glass of the laminate, resulting in a lack of adhesive at the root of the lead wire, thus ensuring the aesthetics of the final photovoltaic module. In this embodiment, the end of the lead wire is the end that extends out of the photovoltaic stack, and the root of the lead wire is the end that is located inside the photovoltaic stack.

[0039] This embodiment does not limit the specific material of the photovoltaic lamination auxiliary component 10, as long as it can provide sufficient buffering force and shape strength when pressed down by the lower pressure plate. This shape strength means having the ability to elastically deform to protect the lead wires within the groove structure 11. Furthermore, it must also meet the process requirements during lamination, such as the lamination temperature typically set to 150℃ to 200℃, and the downward pressure of the lower pressure plate typically being 0.5 MPa to 1.5 MPa. Accordingly, this embodiment does not limit the specific shape of the photovoltaic lamination auxiliary component 10. For example, the photovoltaic lamination auxiliary component 10 can be set as a rectangular shape, or as a circular shape, or as other customized shapes. In this embodiment, the thickness of the photovoltaic lamination auxiliary component 10 can be set according to the height of the lead wire protruding from the backsheet surface. Specifically, to ensure the protective effect of the photovoltaic lamination auxiliary component 10 on the end of the lead wire, the thickness of the photovoltaic lamination auxiliary component 10 can be set to be greater than the height of the lead wire protruding from the backsheet surface. In this embodiment, the photovoltaic lamination auxiliary component 10 can be configured to connect with the entire backsheet area or a partial area of ​​the backsheet in the photovoltaic laminate, or it can be configured to connect with the entire pressing surface or a partial area of ​​the pressing surface of the lower platen in the photovoltaic lamination system, or the photovoltaic lamination auxiliary component 10 can be integrally formed with the above-mentioned components. To ensure the positional matching between the photovoltaic lamination auxiliary component 10 and the backsheet lead-out hole, a groove structure 11 can be provided in the photovoltaic lamination auxiliary component 10, which is set directly opposite the backsheet lead-out hole, and the tolerance can be set to be less than or equal to 5 mm.

[0040] Furthermore, to prevent backsheet damage due to stress concentration during lamination, a chamfered structure can be provided at the edge of the groove structure 11 in the photovoltaic lamination auxiliary component 10 near the backsheet. Specifically, it can be a curved chamfer to improve the ability of the photovoltaic laminate to withstand the downward pressure of the lower platen during lamination, thus preventing backsheet damage. Further, in this embodiment, a chamfered structure can also be provided at the outer contour corner of the photovoltaic lamination auxiliary component 10 near the backsheet, specifically a curved corner. In this embodiment, the bottom of the groove structure 11 in the photovoltaic lamination auxiliary component 10 can also be provided as an anti-compression layer. Specifically, a buffer layer, such as foam tape, can be provided at the bottom of the groove structure 11 to achieve an anti-compression effect, or the bottom of the groove structure 11 can be provided as a curved groove bottom to achieve an anti-compression effect. It should be further explained that the description of the bottom of the groove structure 11 in this embodiment refers to the groove structure 11 itself and does not involve the upper or lower side of the groove structure 11 during actual installation. Considering the orientation of the photovoltaic lamination auxiliary component 10 during actual installation, and the lead wire extending from the lower side into the groove structure 11, the bottom of the groove structure 11 is located on the upper side of the groove structure 11 during actual installation. That is, the groove structure 11 is upside down at the position of the lead hole on the back panel. In this embodiment, an insulating layer, such as a polyimide film, can be coated on the inner wall of the groove structure 11 to ensure the insulation effect of the photovoltaic module. In this embodiment, the groove structure 11 in the photovoltaic lamination auxiliary component 10 achieves physical isolation of pressure, which can prevent the lower pressure plate from directly acting on the lead wire, thereby avoiding damage to the lead wire by compression and damage to the back panel due to uneven local stress. At the same time, it avoids the lead wire from losing adhesive at the root due to compression, ensuring the aesthetics of the final photovoltaic module. In this embodiment, the groove structure 11 in the photovoltaic lamination auxiliary component 10 includes, but is not limited to, variations such as U-shaped grooves, V-shaped grooves, and stepped grooves. Finally, the photovoltaic lamination auxiliary component 10 installed in this embodiment can be removed after the lamination process is completed.

[0041] Furthermore, in order to improve the protection effect of the photovoltaic lamination auxiliary component 10 on the lead wire, the depth of the groove structure 11 can be set to be greater than or equal to the height of the lead wire protruding from the back plate of the photovoltaic laminate.

[0042] It should be noted that in this embodiment, the depth of the groove structure 11 is set to be greater than or equal to the height of the lead wire protruding from the backplate of the photovoltaic laminate. This allows the groove structure 11 to fully accommodate the lead wire, improving the protection of the portion of the lead wire protruding from the backplate and reducing the force exerted on the lead wire by the pressure plate. Furthermore, to maximize the buffering effect of the photovoltaic lamination auxiliary component 10 on the downward pressure and prevent the pressure plate from directly acting on the lead wire, the depth of the groove structure 11 can be set to be greater than the height of the lead wire protruding from the backplate in this embodiment. It should also be noted that the height of the lead wire protruding from the backplate in this embodiment refers to the vertical distance from the surface of the backplate to the highest point of the protruding lead wire. Specifically, the depth of the groove structure 11 can be set to be greater than or equal to the height of the lead wire protruding from the backplate, while being less than or equal to 1.5 times the height of the lead wire protruding from the backplate, to avoid excessive compression of the photovoltaic lamination auxiliary component 10 during lamination, which could lead to deformation and failure.

[0043] Furthermore, in order to ensure that the groove structure 11 can fully accommodate the lead wire, and at the same time improve the protection effect of the photovoltaic lamination auxiliary component 10 on the lead wire, the depth of the groove structure 11 can be set to 2 mm to 5 mm.

[0044] It should be noted that in this embodiment, the depth of the groove structure 11 is set to 2 mm to 5 mm to match the existing lead wires, which can further improve the protection effect of the lead wires. It should also be noted that if the depth of the groove structure 11 is less than 2 mm, the lead wires will be deformed under pressure, causing micro-cracks in the backsheet, and resulting in insufficient adhesive at the root of the lead wires, affecting the aesthetics of the finished product. If the depth of the groove structure 11 is greater than 5 mm, the overall thickness of the photovoltaic lamination auxiliary component 10 is large, affecting the heat transfer efficiency of the laminator heating plate, and also resulting in insufficient resilience of the photovoltaic lamination auxiliary component 10, leading to air gaps inside the laminated module. In this embodiment, the groove depth is set within the optimal range of 2 mm to 5 mm, balancing the protection of the lead wires and process compatibility. Furthermore, in this embodiment, the groove structure 11 can be further configured as a depth-adjustable groove structure 11. For example, the depth of the groove structure 11 can be adjusted by setting modular gaskets.

[0045] Furthermore, to improve the simplicity and efficiency of fabricating the groove structure 11, the following can be referenced: Figure 2 , Figure 2 This is a schematic diagram of another photovoltaic lamination auxiliary component provided in an embodiment of the present invention. The groove structure 11 can be configured as a bottomless groove 111 that penetrates the photovoltaic lamination auxiliary component 10 along the depth direction.

[0046] It should be noted that in this embodiment, the groove structure 11 is set as a bottomless groove 111, that is, the groove structure 11 in the aforementioned photovoltaic lamination auxiliary component 10 is a through-hole structure formed in the photovoltaic lamination auxiliary component 10, penetrating the photovoltaic lamination auxiliary component 10 along the depth direction, penetrating the entire thickness of the photovoltaic lamination auxiliary component 10, and the depth direction is consistent with the lamination direction of the photovoltaic laminate, which is a direction perpendicular to the photovoltaic lamination surface. This embodiment does not limit the specific cross-sectional shape of the through-hole structure formed in the photovoltaic lamination auxiliary component 10, as long as it can accommodate the lead wire in the through-hole structure. For example, the cross-section of the through-hole structure can be set as stepped, or it can be set as trumpet-shaped, or it can be set as other shapes. By specifically setting the groove structure 11 as a through-hole structure as mentioned in this embodiment, problems such as liquid accumulation and stress concentration can be avoided.

[0047] The photovoltaic lamination auxiliary component 10 provided in this embodiment of the invention has a groove structure 11 corresponding to the backsheet lead-out holes of the photovoltaic stack. During lamination, the photovoltaic lamination auxiliary component 10 contacts the backsheet of the photovoltaic stack. The groove structure 11 accommodates the lead-out wires at the corresponding backsheet lead-out holes. This invention, by adding an extra photovoltaic lamination auxiliary component 10 before lamination, and by adding this auxiliary component 10 around each lead-out wire position, prevents the lead-out wires from contacting the lower platen of the laminator during lamination, avoiding stress on the root of the lead-out wires, thereby solving the problem of the black busbars turning white at the holes and improving the aesthetics of the manufactured photovoltaic modules.

[0048] Furthermore, by setting the depth of the groove structure 11 to be greater than or equal to the height of the lead wire protruding from the backplate of the photovoltaic stack, this embodiment of the present invention can facilitate the groove structure 11 to fully accommodate the lead wire, improve the protection effect of the lead wire protruding from the backplate, and reduce the force exerted on the lead wire by the pressure plate. Furthermore, by specifically setting the depth of the groove structure 11 to 2 mm to 5 mm, it can match existing lead wires and ensure improved protection effect for the lead wires. By setting the groove structure 11 as a bottomless groove 111, the simplicity of the preparation of the groove structure 11 is improved, thereby improving the preparation efficiency of the groove structure 11.

[0049] Example 2:

[0050] Please refer to Figure 3 , Figure 3 This is a schematic diagram of a structure in which photovoltaic lamination auxiliary components are arranged on the surface of a photovoltaic laminate, which is provided as an embodiment of the present utility model.

[0051] The photovoltaic lamination auxiliary component 10 provided in this embodiment differs from that in Embodiment 1 above in that:

[0052] The aforementioned photovoltaic lamination auxiliary component 10 includes multiple auxiliary sub-components 12, each of which corresponds to a backplane lead-out hole.

[0053] It should be noted that you can refer to Figure 4 , Figure 4 This is an example diagram of an existing photovoltaic cascade. (Compared to...) Figure 4 Correspondingly, Figure 5 This is an example diagram of a photovoltaic laminate with photovoltaic lamination auxiliary components provided in an embodiment of this utility model. (Compared to the above...) Figure 4 and Figure 5 This embodiment clearly demonstrates an improvement over existing technologies. In this embodiment, the photovoltaic lamination auxiliary component 10 includes multiple auxiliary sub-components 12, with one auxiliary sub-component 12 corresponding to each backsheet lead-out hole to ensure the accuracy of the photovoltaic lamination auxiliary component 10's placement. This embodiment does not limit the specific number of auxiliary sub-components 12; the number needs to be set according to the number of backsheet lead-out holes on the backsheet, i.e., one auxiliary sub-component 12 is provided at each backsheet lead-out hole. Correspondingly, each auxiliary sub-component 12 in this embodiment has at least one of the aforementioned groove structures 11 to accommodate the lead wire 1 at the corresponding backsheet lead-out hole. In this embodiment, the auxiliary sub-component 12 can be configured as an independent gasket, a modular frame, or an embedded plug-in. In this embodiment, each auxiliary sub-component 12 can be concentrically arranged around the corresponding backsheet lead-out hole, or each auxiliary sub-component 12 can be edge-fitted to the corresponding backsheet lead-out hole, or each auxiliary sub-component 12 can be axially nested with the corresponding backsheet lead-out hole. In addition, in this embodiment, the multiple auxiliary sub-components 12 can be connected by detachable snap-fit ​​or by magnetic attraction.

[0054] Furthermore, in order to ensure that the auxiliary sub-component 12 can accommodate the lead wire 1, and at the same time to avoid the problem that the contact area between the auxiliary sub-component 12 and the lower pressure plate is too small, resulting in large local stress and causing local damage to the battery cell, the auxiliary sub-component 12 can be set as a rubber pad.

[0055] The outer contour of the rubber pad is 95 mm to 115 mm in length and 50 mm to 70 mm in width;

[0056] The groove structure 11 has a length of 45 mm to 55 mm and a width of 10 mm to 20 mm.

[0057] It should be noted that in this embodiment, the outer contour of the adhesive pad is set to be 95 mm to 115 mm in length and 50 mm to 70 mm in width, and the groove structure 11 is set to be 45 mm to 55 mm in length and 10 mm to 20 mm in width. This ensures that the lead wire 1 is completely accommodated in the groove structure 11 formed by the adhesive pad, and ensures the contact area between the adhesive pad and the lower pressure plate, avoiding excessive local stress that could damage the photovoltaic stack.

[0058] Furthermore, to improve the ease of installation and efficiency of the photovoltaic lamination auxiliary components 10, the following can be referenced: Figure 6 , Figure 6 This is an example diagram illustrating another way of arranging photovoltaic lamination auxiliary components on the surface of a photovoltaic laminate, as provided in this embodiment of the present invention. The photovoltaic lamination auxiliary component 10 may include multiple strip-shaped auxiliary sub-components 13 formed corresponding to the arrangement direction of the backsheet lead-out holes;

[0059] Each strip-shaped auxiliary sub-component 13 is provided with multiple groove structures 11.

[0060] It should be noted that in this embodiment, the photovoltaic lamination auxiliary component 10 includes multiple strip-shaped auxiliary sub-components 13, and the long side of each strip-shaped auxiliary sub-component 13 extends along one of the arrangement directions of the back panel lead-out holes. That is, the extension direction of the strip-shaped auxiliary sub-component 13 is consistent with or even coincides with the direction formed by the line connecting the centers of the arranged back panel lead-out holes. Each strip-shaped auxiliary sub-component 13 corresponds to multiple groove structures 11. During the layout, it is not necessary to set up the photovoltaic lamination auxiliary component 10 independently for each back panel lead-out hole. Instead, the layout of multiple back panel lead-out holes can be completed by setting up each strip-shaped auxiliary sub-component 13. In this embodiment, the strip-shaped auxiliary sub-component 13 can be spliced ​​together from multiple short strip-shaped auxiliary sub-components 13, or it can be integrally formed.

[0061] The photovoltaic lamination auxiliary component 10 provided in this embodiment includes multiple auxiliary sub-components 12, with one auxiliary sub-component 12 corresponding to each backplane lead-out hole, ensuring the accuracy of the photovoltaic lamination auxiliary component 10's placement. Furthermore, this embodiment sets the outer contour of the adhesive pad to be 95 mm to 115 mm in length and 50 mm to 70 mm in width, and sets the groove structure 11 to be 45 mm to 55 mm in length and 10 mm to 20 mm in width. This ensures that the lead-out wire 1 is completely accommodated within the groove structure 11 formed by the adhesive pad, and guarantees the contact area between the adhesive pad and the lower pressure plate, preventing excessive local stress from damaging the photovoltaic laminate. By including multiple strip-shaped auxiliary sub-components 13 in the photovoltaic lamination auxiliary component 10, with the long side of each strip-shaped auxiliary sub-component 13 extending along one arrangement direction of the backplane lead-out holes, the ease of placement and efficiency of the photovoltaic lamination auxiliary component 10 are improved.

[0062] In one feasible embodiment, the photovoltaic lamination auxiliary component is provided with a groove structure corresponding to the back sheet lead-out hole of the photovoltaic stack, so that the photovoltaic lamination auxiliary component contacts the back sheet of the photovoltaic stack during the lamination process, and the groove structure accommodates the lead wire at the corresponding back sheet lead-out hole.

[0063] The depth of the groove structure is greater than or equal to the height of the lead wire protruding from the back sheet of the photovoltaic laminate, and the depth of the groove structure is 2 mm to 5 mm; the groove structure penetrates the photovoltaic lamination auxiliary component along the depth direction to form a bottomless groove;

[0064] The photovoltaic lamination auxiliary component includes multiple auxiliary sub-components, each of which corresponds to a backsheet lead-out hole. The auxiliary sub-component is an adhesive pad with an outer contour length of 95 mm to 115 mm and a width of 50 mm to 70 mm. The groove structure has a length of 45 mm to 55 mm and a width of 10 mm to 20 mm.

[0065] The following describes the photovoltaic laminate to be laminated provided in the embodiments of this utility model. The photovoltaic laminate to be laminated described below can be referred to in correspondence with the photovoltaic lamination auxiliary parts described above.

[0066] Please refer to the details. Figure 7 , Figure 7 An example diagram of a photovoltaic laminate to be laminated, provided for an embodiment of this utility model, may include:

[0067] Photovoltaic laminates, and photovoltaic lamination auxiliary components as described above;

[0068] The photovoltaic lamination auxiliary component is connected to the back plate of the photovoltaic laminate so that the groove structure can accommodate the corresponding lead wire at the back plate of the photovoltaic laminate.

[0069] It should be noted that in this embodiment, the photovoltaic lamination auxiliary component consists of multiple auxiliary sub-components 12. However, in practice, the photovoltaic lamination auxiliary component may only include one auxiliary sub-component 12. In this embodiment, the photovoltaic stack is a module that requires lamination to form a photovoltaic module. The photovoltaic lamination auxiliary component is located on the backplate of the photovoltaic stack, so that the groove structure 11 in the photovoltaic lamination auxiliary component corresponds to the backplate lead-out hole in the backplate of the photovoltaic stack. The lead-out wire 1 extending through the backplate lead-out hole is accommodated in the groove structure 11. Subsequently, the lower pressure plate 2 applies downward pressure to the photovoltaic lamination auxiliary component, reducing or avoiding the application of pressure to the end of the lead-out wire 1, thereby improving the yield rate of photovoltaic modules formed from the photovoltaic stack and ensuring the aesthetics of the product. Before lamination, the photovoltaic stack, photovoltaic lamination auxiliary component, and lower pressure plate 2 need to be installed and arranged. The relative positional relationship during installation can be referenced... Figure 8 , Figure 8This is a schematic diagram of the structure of a photovoltaic laminate to be laminated, provided in an embodiment of the present invention. This embodiment does not limit the specific method of connecting the photovoltaic lamination auxiliary component to the photovoltaic laminate, as long as the photovoltaic lamination auxiliary component is securely fixed in the backsheet of the photovoltaic laminate. For example, the photovoltaic lamination auxiliary component can be bonded to the photovoltaic laminate, for instance, the photovoltaic lamination auxiliary component can be bonded to the backsheet via a hot melt adhesive layer, with the opening of the groove structure 11 facing the backsheet to form a space for receiving the lead wire 1, or it can be fixed by tape, or it can be connected by snap-fit, or it can be fixed by other means. However, it should be further noted that regardless of the method used to connect the photovoltaic lamination auxiliary component to the photovoltaic laminate, it is necessary to ensure that there is no relative movement between the photovoltaic lamination auxiliary component and the photovoltaic laminate.

[0070] The photovoltaic (PV) laminate provided in this embodiment includes a PV laminate and a PV lamination auxiliary component as described above. The PV lamination auxiliary component is connected to the backplate of the PV laminate so that the groove structure 11 accommodates the lead wire 1 corresponding to the backplate of the PV laminate. The PV lamination auxiliary component is provided with a groove structure 11 corresponding to the lead wire hole of the backplate of the PV laminate, so that the PV lamination auxiliary component contacts the backplate of the PV laminate during the lamination process, and the groove structure 11 accommodates the lead wire 1 at the corresponding backplate lead wire hole. This invention adds an additional PV lamination auxiliary component before the lamination process. By adding this PV lamination auxiliary component around the position of each lead wire 1, the lead wire 1 does not contact the lower platen 2 of the laminator during the lamination process, avoiding stress on the root of the lead wire 1, thereby solving the problem of the black busbar turning white at the hole and improving the aesthetics of the prepared PV module. In this embodiment, an elastic sealing strip can be provided on the inner wall of the groove structure 11 so that the photovoltaic lamination auxiliary component and the lead wire 1 form an interference fit after pressing.

[0071] The photovoltaic lamination system provided in the embodiments of this utility model is described below. The photovoltaic lamination system described below can be referred to in correspondence with the photovoltaic lamination auxiliary components described above.

[0072] Please refer to Figure 9 , Figure 9 A top view of a photovoltaic lamination system provided in this embodiment of the present invention may include:

[0073] Laminators, and photovoltaic lamination accessories as described above;

[0074] The lower platen 2 of the laminator is connected to the photovoltaic lamination auxiliary component, and the side of the photovoltaic lamination auxiliary component facing away from the lower platen 2 has a groove structure 11 corresponding to the back plate lead-out hole of the photovoltaic stack, so that the photovoltaic lamination auxiliary component contacts the back plate of the photovoltaic stack during the lamination process, and the groove structure 11 accommodates the lead wire at the corresponding back plate lead-out hole.

[0075] It should be noted that in this embodiment, the photovoltaic lamination auxiliary component can also be composed of multiple auxiliary sub-components 12, or a single auxiliary sub-component 12 can constitute the photovoltaic lamination auxiliary component, that is, in this case, the auxiliary sub-component 12 can be regarded as a photovoltaic lamination auxiliary component. In this embodiment, the photovoltaic lamination auxiliary component is arranged on the lower platen 2 of the laminator, specifically on the surface of the lower platen 2 facing the photovoltaic laminate, so that during the lamination process, the groove structure 11 formed on the side of the photovoltaic lamination auxiliary component facing away from the lower platen 2 is used to correspond to the back plate lead-out hole to accommodate the lead wire extending from the back plate lead-out hole. This embodiment does not limit the specific way in which the photovoltaic lamination auxiliary component is connected to the lower platen 2 of the laminator. For example, the photovoltaic lamination auxiliary component can be connected to the lower platen 2 by a detachable connection, or the photovoltaic lamination auxiliary component can also be integrally formed with the lower platen 2. Specifically, in this embodiment, the photovoltaic lamination auxiliary component can be fixed to the lower platen 2 of the laminator by bolts, or the photovoltaic lamination auxiliary component can also be detachably connected to the lower platen 2 by magnetic adsorption. Before lamination, the photovoltaic lamination auxiliary component can be installed on the lower surface of the lower platen 2 with its groove structure 11 facing downward and aligned with the back plate lead-out hole of the photovoltaic laminate. In this embodiment, the bottom of the groove structure 11 can be reserved with an expansion space to avoid the cable being deformed by pressure during hot pressing.

[0076] Furthermore, in order to improve the convenience of lamination processing and avoid the need to install photovoltaic lamination auxiliary components separately each time the above-mentioned photovoltaic stacked components are laminated, the lower pressure plate 2 and the photovoltaic lamination auxiliary components can be set as an integrated structure.

[0077] It should be noted that in this embodiment, the lower pressure plate 2 and the photovoltaic lamination auxiliary component are set as an integrated structure. On the one hand, this can avoid the photovoltaic lamination auxiliary component from shifting relative to the lower pressure plate 2 during the lamination process. On the other hand, it can improve the convenience of the lamination process, eliminating the need to install the photovoltaic lamination auxiliary component separately, avoiding the risk of connection failure due to increased usage, and improving service life.

[0078] The photovoltaic lamination system provided in this embodiment includes a laminator and a photovoltaic lamination auxiliary component as described above. The lower platen 2 of the laminator is connected to the photovoltaic lamination auxiliary component, and a groove structure 11 corresponding to the backplate lead-out hole of the photovoltaic stack is formed on the side of the photovoltaic lamination auxiliary component facing away from the lower platen 2. This groove structure 11 allows the photovoltaic lamination auxiliary component to contact the backplate of the photovoltaic stack during lamination. The groove structure 11 accommodates the lead wire at the corresponding backplate lead-out hole. In this embodiment, the photovoltaic lamination auxiliary component is provided with a groove structure 11 corresponding to the backplate lead-out hole of the photovoltaic stack, so that the photovoltaic lamination auxiliary component contacts the backplate of the photovoltaic stack during lamination. The groove structure 11 accommodates the lead wire at the corresponding backplate lead-out hole. This invention adds an additional photovoltaic lamination auxiliary component before lamination. By adding this photovoltaic lamination auxiliary component around each lead position, the lead does not contact the lower platen 2 of the laminator during the lamination process, thus avoiding stress on the root of the lead and solving the problem of the black busbar turning white at the holes, thereby improving the aesthetics of the prepared photovoltaic module.

[0079] This embodiment also provides a photovoltaic module, which is a module that completes the lamination process using the above-mentioned photovoltaic lamination auxiliary components.

[0080] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0081] Furthermore, it should be noted that in this document, relationships such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising," "including," or any other variations are intended to cover non-exclusive inclusion.

[0082] The above provides a detailed description of a photovoltaic lamination auxiliary component, a photovoltaic laminate to be laminated, and a photovoltaic lamination system provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the structure and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A photovoltaic lamination auxiliary component, characterized in that, The photovoltaic lamination auxiliary component is provided with a groove structure corresponding to the back sheet lead-out hole of the photovoltaic stack, so that the photovoltaic lamination auxiliary component contacts the back sheet of the photovoltaic stack during the lamination process, and the groove structure accommodates the lead wire at the corresponding back sheet lead-out hole.

2. The photovoltaic lamination auxiliary component according to claim 1, characterized in that, The depth of the groove structure is greater than or equal to the height of the lead wire protruding from the back plate of the photovoltaic stack.

3. The photovoltaic lamination auxiliary component according to claim 2, characterized in that, The depth of the groove structure is 2 mm to 5 mm.

4. The photovoltaic lamination auxiliary component according to claim 1, characterized in that, The groove structure is a bottomless groove that extends through the photovoltaic lamination auxiliary component along the depth direction.

5. The photovoltaic lamination auxiliary component according to claim 1, characterized in that, The photovoltaic lamination auxiliary component includes multiple auxiliary sub-components, and each auxiliary sub-component corresponds to one of the back sheet lead-out holes.

6. The photovoltaic lamination auxiliary component according to claim 5, characterized in that, The auxiliary sub-component is a rubber pad; The outer contour of the rubber pad is 95 mm to 115 mm in length and 50 mm to 70 mm in width; The groove structure is 45 mm to 55 mm long and 10 mm to 20 mm wide.

7. The photovoltaic lamination auxiliary component according to claim 1, characterized in that, The photovoltaic lamination auxiliary component includes multiple strip-shaped auxiliary sub-components formed corresponding to the arrangement direction of the backsheet lead-out holes; Each of the strip-shaped auxiliary sub-components is provided with multiple groove structures.

8. A photovoltaic laminate to be laminated, characterized in that, include: A photovoltaic laminate, and a photovoltaic lamination auxiliary component as described in any one of claims 1 to 7; The photovoltaic lamination auxiliary component is connected to the back plate of the photovoltaic stack so that the groove structure can accommodate the lead wire corresponding to the back plate of the photovoltaic stack.

9. A photovoltaic lamination system, characterized in that, include: A laminator, and a photovoltaic lamination auxiliary component as described in any one of claims 1 to 7; The lower platen of the laminator is connected to the photovoltaic lamination auxiliary component, and the photovoltaic lamination auxiliary component has a groove structure on the side facing away from the lower platen that corresponds to the back plate lead-out hole of the photovoltaic stack, so that the photovoltaic lamination auxiliary component contacts the back plate of the photovoltaic stack during the lamination process, and the groove structure contains the lead wire at the corresponding back plate lead-out hole.

10. The photovoltaic lamination system according to claim 9, characterized in that, The lower pressure plate and the photovoltaic lamination auxiliary component are an integral structure.

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