Laminating system and laminating method for photovoltaic glass

Abstract

The invention belongs to the technical field of electrical elements, and particularly relates to a photovoltaic glass laminating system and method, and the photovoltaic glass laminating system comprises a control module which is configured to control a heating device to heat photovoltaic glass; the coating device comprises a plurality of guide columns and a driving mechanism electrically connected with the control module; a ring body is arranged on the outer wall of the guide column; the control module is configured to control the driving mechanism to drive the guide column to ascend, so that the guide column penetrates through the heating device and then completely covers the corresponding bus bar bulge through the concave part, and the ring body blocks the lead part on the photovoltaic glass, so that an annular cavity is formed between the ring body and the battery piece to accommodate a molten adhesive film after heating; therefore, the molten adhesive film can be blocked in the annular cavity when the adhesive film is molten by heating, so that the inner wall of the annular cavity is uniformly covered with the EVA adhesive, and the inner wall of the lead part is prevented from being exposed.

Description

Technical Field

[0001] The present invention belongs to the technical field of electrical components, and particularly relates to a method or device specifically applicable to manufacturing or processing electrical devices or their components, and more particularly to a lamination system and method for photovoltaic glass. Background Art

[0002] During the preparation of photovoltaic glass, lamination is required. In related technologies, holes are dug in the EVA film at the corresponding backplane glass lead holes before lamination to avoid the protrusions at the ends of the busbars. However, due to the thermal shrinkage of the EVA film, the film at the edge of the lead hole will retract, resulting in empty glue at the edge of the lead hole. Moreover, since the EVA film at the lead hole is removed, the inner wall of the lead hole is not covered with glue and is in an exposed state. After subsequent wiring and installation of the fixing frame, sealant is used for filling to ensure insulation. However, there is an exposed part on the inner wall of the lead hole. After the sealant is filled, part of the inner wall of the lead hole adheres to the sealant and part adheres to the EVA glue. Since the sealant and the EVA glue are adhesives of different properties, this splicing and sealing method will cause a decrease in electrical insulation.

[0003] Therefore, due to the technical problem of uneven adhesion of EVA glue on the inner wall of the photovoltaic glass lead hole, a lamination system and method for photovoltaic glass need to be designed.

[0004] It should be noted that the above information disclosed in this background art section is only used to understand the background art of the concept of this application. Therefore, the above description is not considered as information of the prior art. Summary of the Invention

[0005] The embodiments of the present disclosure at least provide a lamination system and method for photovoltaic glass.

[0006] In a first aspect, the embodiments of the present disclosure provide a lamination system for photovoltaic glass, including: The heating device and the coating device are in a vacuum environment; A control module, and a heating device and a coating device electrically connected to the control module; The heating device carries the photovoltaic glass, and the control module is configured to control the heating device to heat the photovoltaic glass and control the coating device to coat the busbar protrusion in the photovoltaic glass when the heating device is heating; wherein The coating device includes: a plurality of guide columns, and a driving mechanism electrically connected to the control module; A ring body is provided on the outer wall of the guide column; The guide columns are vertically arranged on the driving mechanism, and the guide columns correspond to the busbar protrusions in the photovoltaic glass; A concave portion adapted to the busbar protrusion is provided on the top surface of the guide column; The control module is configured to control the driving mechanism to drive the guide post to rise, so that after the guide post passes through the heating device, the corresponding bus bar protrusion is completely covered by the concave portion; At this time, the annular body seals the column gap between the lead portion and the guide post in the photovoltaic glass, so as to form an annular cavity for accommodating the melted adhesive film after heating between the annular body and the battery cell.

[0007] In an optional embodiment, the driving mechanism includes: a driving source electrically connected to the control module; A lifting plate is connected to the driving source, and the guide post is arranged on the surface of the lifting plate close to the photovoltaic glass; The control module is configured to control the driving source to drive the lifting plate to rise, so that after the guide post passes through the heating device, the corresponding bus bar protrusion is completely covered by the concave portion, and the bus bar protrusion is completely separated from the adhesive film in the photovoltaic glass; The outer diameter of the annular body is adapted to the lead portion formed on the photovoltaic glass to block the lead portion when the corresponding bus bar protrusion is completely covered by the concave portion.

[0008] In an optional embodiment, the photovoltaic glass includes: a pair of backplane glasses arranged up and down; A battery cell is arranged between the two backplane glasses, and a plurality of bus bar protrusions are arranged on the battery cell; Adhesive films are arranged between the battery cell and the two backplane glasses; A digging hole corresponding to the bus bar protrusion is arranged on one of the adhesive films, and the diameter of the digging hole is larger than the diameter of the bus bar protrusion; A lead portion corresponding to the bus bar protrusion is arranged on one of the backplane glasses, and the lead portion penetrates through the backplane glass along the thickness direction of the backplane glass, so that the bus bar protrusion is located in the corresponding lead portion after passing through the digging hole; During the heating process of the photovoltaic glass, the backplane glass provided with the lead portion is arranged at the lower part.

[0009] In an optional embodiment, the heating device includes: a silica gel heating plate electrically connected to the control module; The silica gel heating plate bears the photovoltaic glass; A through hole corresponding to the lead portion is formed on the silica gel heating plate, and the inner diameter of the through hole is adapted to the inner diameter of the lead portion; The lifting plate is located below the silica gel heating plate; The control module is configured to control the silicone heating plate to heat the photovoltaic glass to melt the adhesive film, and control the driving source to drive the lifting plate to rise, so that the guiding column passes through the through hole and extends into the lead portion, the top surface of the guiding column contacts the battery chip, and the concave portion completely covers the corresponding bus bar protrusion. At this time, the adhesive film is completely separated from the bus bar protrusion, the outer wall of the ring body on the guiding column contacts the inner wall of the through hole, and an annular cavity is formed between the ring body and the battery chip to accommodate the melted adhesive film after heating.

[0010] In an alternative embodiment, the heating device further includes: a plurality of support bars; The support bars are arranged side by side, and the silicone heating plate is mounted on the top surfaces of the support bars; The lifting plate in the driving mechanism is arranged between a pair of support bars.

[0011] In an alternative embodiment, the material of the guiding column is the same as that of the silicone heating plate, so as to transfer heat through the guiding column when the silicone heating plate is heated.

[0012] In a second aspect, an embodiment of the present disclosure further provides a lamination method for a lamination system of the above photovoltaic glass, including: The control module controls the heating device to heat the photovoltaic glass, and controls the coating device to coat the bus bar protrusion in the photovoltaic glass when the heating device is heating; The control module controls the driving mechanism to drive the guiding column to rise, so that after the guiding column passes through the heating device, the corresponding bus bar protrusion is completely covered by the concave portion, and the ring body blocks the lead portion on the photovoltaic glass, so as to form an annular cavity between the ring body and the battery chip to accommodate the melted adhesive film after heating.

[0013] The beneficial effects of the present invention are as follows. The lamination system of the present photovoltaic glass includes: a control module, a heating device and a coating device electrically connected to the control module; the heating device carries the photovoltaic glass, and the control module is configured to control the heating device to heat the photovoltaic glass, and control the coating device to coat the busbar protrusion in the photovoltaic glass when the heating device is heating; wherein the coating device includes: a plurality of guide columns, and a driving mechanism electrically connected to the control module; a ring body is arranged on the outer wall of the guide column; the guide columns are vertically arranged on the driving mechanism, and the guide columns correspond to the busbar protrusions in the photovoltaic glass; a concave portion adapted to the busbar protrusion is formed on the top surface of the guide column; the control module is configured to control the driving mechanism to drive the guide column to rise, so that after the guide column passes through the heating device, the corresponding busbar protrusion is completely covered through the concave portion, and the ring body blocks the lead portion on the photovoltaic glass, so that an annular cavity is formed between the ring body and the battery cell to accommodate the melted adhesive film after heating, thereby realizing that when the adhesive film is melted by heating, the melted adhesive film can be blocked in the annular cavity to uniformly cover the EVA adhesive on the inner wall of the annular cavity, and avoiding the existence of exposed parts on the inner wall of the lead portion.

[0014] Other features and advantages of the present invention will be described in the following specification, and, in part, will be obvious from the specification, or will be understood by practicing the present invention. The objectives and other advantages of the present invention are realized and obtained by the structure specifically pointed out in the specification and the drawings.

[0015] To make the above objectives, features and advantages of the present invention more obvious and understandable, specific preferred embodiments are hereby cited and, in conjunction with the accompanying drawings, are described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 Schematic structural diagram of a lamination system of a photovoltaic glass provided by an embodiment of the present disclosure; Figure 2 Internal structural diagram of a lamination system of a photovoltaic glass provided by an embodiment of the present disclosure; Figure 3 For Figure 2 Enlarged schematic diagram of part A in Figure 4 Schematic structural diagram of a coating device provided by an embodiment of the present disclosure; Figure 5 Schematic diagram of the state where a covering device provided by an embodiment of the present disclosure covers the busbar protrusion; Figure 6 Principle block diagram of a lamination system for a photovoltaic glass provided by an embodiment of the present disclosure.

[0018] In the figure: 1 Heating device, 11 Silicone heating plate, 12 Through hole, 13 Support bar; 2 Covering device, 21 Guide post, 22 Ring body, 23 Recess, 24 Lifting plate, 25 Annular cavity; 3 Base, 31 Cover plate; 4 Photovoltaic glass, 41 Backsheet glass, 42 Lead portion, 43 Battery cell, 44 Busbar protrusion, 45 Adhesive film, 46 Holed area. Specific embodiments

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0020] As used herein, phrases such as "in one embodiment", "according to one embodiment", "in some embodiments", etc. generally refer to the fact that the specific features, structures, or characteristics after the phrase can be included in at least one embodiment of the present disclosure. Therefore, the specific features, structures, or characteristics can be included in more than one embodiment of the present disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, terms such as "example", "exemplary", etc. are used "for the purpose of serving as an example, instance, or illustration. Any embodiment, aspect, or design described herein as "example" or "exemplary" is not necessarily construed as being preferred or superior to other embodiments, aspects, or designs. Instead, the use of terms such as "example", "exemplary", etc. is intended to present concepts in a specific manner.

[0021] During the preparation of photovoltaic glass, lamination is required. The adhesive film melts and evenly flows to fill between the photovoltaic glass and the battery cells, thereby ensuring electrical insulation and mechanical fixation. However, for the busbar area of the battery cells, the position corresponding to the through-hole of the backplane glass of the busbar needs to be vacant so that its end can be connected to the junction box. In the related art, holes are dug in the EVA adhesive film at the corresponding lead hole of the backplane glass before lamination to avoid the protrusion at the end of the busbar. However, the inventor found that due to the thermal shrinkage of the EVA adhesive film, the adhesive film at the edge of the lead hole will retract, resulting in empty glue at the edge of the lead hole. Moreover, since the EVA adhesive film at the lead hole is removed, the inner wall of the lead hole is not covered with glue and is in a bare state. After subsequent wiring and installation of the fixing frame, sealant is used for filling to ensure insulation. However, there is a bare part on the inner wall of the lead hole. After the sealant is filled, part of the inner wall of the lead hole adheres to the sealant and part adheres to the EVA glue. Since the sealant and the EVA glue are adhesives of different properties, this splicing and sealing method will cause a decrease in electrical insulation.

[0022] All the defects existing in the above solutions are the results obtained by the inventor through practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure by the present disclosure should be the contributions made by the inventor to the present disclosure during the process of the present disclosure.

[0023] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0024] Such as Figure 1 、 Figure 4 and Figure 5As shown, at least one disclosed embodiment provides a lamination system for a photovoltaic glass 4, comprising: a control module, and a heating device 1 and a coating device 2 electrically connected to the control module; the heating device 1 and the coating device 2 are in a vacuum environment; the heating device 1 carries the photovoltaic glass 4, and the control module is configured to control the heating device 1 to heat the photovoltaic glass 4, and control the coating device 2 to coat the bus bar protrusion 44 in the photovoltaic glass 4 when the heating device 1 is heating; wherein the coating device 2 comprises: a plurality of guide posts 21, and a driving mechanism electrically connected to the control module; a ring body 22 is arranged on the outer wall of the guide post 21; the guide post 21 is vertically arranged on the driving mechanism, and the guide post 21 corresponds to the bus bar protrusion 44 in the photovoltaic glass 4; a concave portion 23 adapted to the bus bar protrusion 44 is formed on the top surface of the guide post 21; the control module is configured to control the driving mechanism to drive the guide post 21 to rise, so that after the guide post 21 passes through the heating device 1, the corresponding bus bar protrusion 44 is completely covered by the concave portion 23; at this time, the ring body 22 blocks the column gap between the middle lead portion 42 on the photovoltaic glass 4 and the guide post 21, so as to form an annular cavity 25 for accommodating the melted adhesive film 45 after heating between the ring body 22 and the battery cell 43, so as to accommodate the melted adhesive film 45 after heating, thereby realizing that when the adhesive film 45 is melted by heating, the melted adhesive film 45 can be blocked in the annular cavity 25 to uniformly cover the EVA adhesive on the inner wall of the annular cavity 25, and avoiding the existence of exposed parts on the inner wall of the lead portion 42.

[0025] In this embodiment, as Figure 6 shown, the control module is electrically connected to both the heating device 1 and the coating device 2.

[0026] In this embodiment, the heating device 1 can heat to melt the adhesive film 45, and the melted adhesive film 45 flows into the annular cavity 25 and is blocked by the ring body 22 from dripping, ensuring that the melted adhesive film 45 can fill the annular cavity 25, so that the inner wall of the annular cavity 25 is uniformly covered with the melted adhesive film 45, that is, the inner wall of the lead portion 42 can be uniformly covered with the adhesive (the melted adhesive film 45), avoiding the existence of exposed parts on the inner wall of the lead portion 42. When filling the sealant subsequently, it is ensured that only the melted adhesive film 45 covers the inner wall of the lead portion 42 and does not contact the sealant, ensuring electrical insulation.

[0027] As Figure 3 and Figure 4As shown, in an alternative embodiment, the driving mechanism includes: a driving source electrically connected to the control module; a lifting plate 24 is connected to the driving source, and the guiding column 21 is disposed on a surface of the lifting plate 24 close to the photovoltaic glass 4; the control module is configured to control the driving source to drive the lifting plate 24 to rise, so that after the guiding column 21 passes through the heating device 1, the corresponding bus bar protrusion 44 is completely covered by the recess 23, and the bus bar protrusion 44 is completely separated from the adhesive film 45 in the photovoltaic glass 4; the outer diameter of the ring body 22 is adapted to the lead portion 42 formed on the photovoltaic glass 4, so as to block the lead portion 42 when the corresponding bus bar protrusion 44 is completely covered by the recess 23.

[0028] In this embodiment, the driving source may be a servo motor or a hydraulic cylinder, etc. The lifting plate 24 can synchronously lift all the guiding columns 21, and the moving direction of the guiding column 21 is as shown by F in Figure 4 Figure F.

[0029] In this embodiment, the bus bar protrusion 44 can be completely covered by the recess 23, so as to prevent the melted adhesive film 45 from adhering to the bus bar protrusion 44 after the adhesive film 45 melts.

[0030] In an alternative embodiment, the photovoltaic glass 4 includes: a pair of backplane glasses 41 arranged up and down; a battery cell 43 is disposed between the two backplane glasses 41, and a plurality of bus bar protrusions 44 are disposed on the battery cell 43; adhesive films 45 are disposed between the battery cell 43 and the two backplane glasses 41; a digging hole 46 corresponding to the bus bar protrusion 44 is formed on one of the adhesive films 45, and the diameter of the digging hole 46 is larger than the diameter of the bus bar protrusion 44; a lead portion 42 corresponding to the bus bar protrusion 44 is formed on one of the backplane glasses 41, and the lead portion 42 penetrates through the backplane glass 41 along the thickness direction of the backplane glass 41, so that the bus bar protrusion 44 is located in the corresponding lead portion 42 after passing through the digging hole 46; during the heating process of the photovoltaic glass 4, the backplane glass 41 provided with the lead portion 42 is arranged at the lower position.

[0031] In this embodiment, some structures in the photovoltaic glass 4 are as shown in Figure 4 Figure, and the adhesive film 45 and the backplane glass 41 on the other side of the battery cell 43 are not shown in Figure 4 Figure.

[0032] In this embodiment, the adhesive film 45 can be an EVA film. The diameter of the hole 46 can be 1.1 times that of the busbar protrusion 44, so that there is a gap between the inner wall of the hole 46 and the edge of the busbar protrusion 44. This gap can adapt to the wall thickness of the concave part 23 on the top surface of the guide post 21, so that when the concave part 23 covers the busbar protrusion 44, the melted adhesive film 45 will not contact the busbar protrusion 44. During subsequent wiring, this part of the gap will be covered by the lead wire, avoiding any exposed part on the lead wire part 42 of the battery cell 43.

[0033] In this embodiment, the lead wire part 42 is in the shape of a hole on the corresponding backplane glass 41, facilitating the busbar protrusion 44 to extend into the lead wire part 42.

[0034] In an alternative embodiment, the heating device 1 includes: a silica gel heating plate 11 electrically connected to the control module; the silica gel heating plate 11 bears the photovoltaic glass 4; through holes 12 corresponding to the lead wire parts 42 are formed on the silica gel heating plate 11, and the inner diameter of the through holes 12 is adapted to the inner diameter of the lead wire parts 42; the lifting plate 24 is located below the silica gel heating plate 11; the control module is configured to control the silica gel heating plate 11 to heat the photovoltaic glass 4 to melt the adhesive film 45, and control the drive source to drive the lifting plate 24 to rise, so that the guide post 21 passes through the through hole 12 and extends into the lead wire part 42. The top surface of the guide post 21 contacts the battery cell 43, and the concave part 23 completely covers the corresponding busbar protrusion 44. At this time, the adhesive film 45 is completely separated from the busbar protrusion 44. The outer wall of the ring body 22 on the guide post 21 contacts the inner wall of the through hole 12, and an annular cavity 25 is formed between the ring body 22 and the battery cell 43 to accommodate the melted adhesive film 45 after heating.

[0035] In this embodiment, when the concave part 23 contacts the battery cell 43 to cover the busbar protrusion 44, the top surface of the ring body 22 can be flush with or slightly lower than the bottom surface of the lead wire part 42, so that the annular cavity 25 can completely include the lead wire part 42, ensuring that the inner wall of the lead wire part 42 is evenly covered with the melted adhesive film 45.

[0036] In this embodiment, when the concave part 23 contacts the battery cell 43 to cover the busbar protrusion 44, the distance between the outer wall of the guide post 21 and the inner wall of the lead wire part 42 is uniform up and down, so that when the annular cavity 25 accommodates the melted adhesive film 45, the adhesive film 45 covers the inner wall of the lead wire part 42 more evenly.

[0037] As Figure 2 and Figure 3 shown, in an alternative embodiment, the heating device 1 further includes: a plurality of support bars 13; the support bars 13 are arranged side by side, and the silica gel heating plate 11 is mounted on the top surfaces of the support bars 13; the lifting plate 24 in the drive mechanism is arranged between a pair of support bars 13.

[0038] In an alternative embodiment, the material of the guide post 21 is the same as that of the silicone heating plate 11, so as to transfer heat through the guide post 21 when the silicone heating plate 11 is heated.

[0039] In this embodiment, the material of the guide post 21 is the same as that of the silicone heating plate 11 to ensure the consistency of heat transfer during the heating process.

[0040] In this embodiment, the heating device 1 is covered by a cover plate 31 provided on the base 3 to prevent heat from spreading outwards.

[0041] In this embodiment, when the heating device 1 melts the adhesive film 45, the environment where the photovoltaic glass 4 is located is evacuated in the manner of the prior art. At this time, the guide post 21 is still inserted into the lead portion 42 to prevent the melted adhesive film 45 from dripping from the lead portion 42, ensuring that the inner wall of the lead portion 42 is evenly covered with glue and avoiding any exposed part on the inner wall of the lead portion 42. The air in the melted adhesive film 45 is removed by evacuation, and the movement of the melted adhesive film 45 is assisted. After the evacuation is completed, the photovoltaic glass 4 is pressurized in the manner of the prior art to complete the pressing. The guide post 21 needs to be removed from the lead portion 42 after the melted adhesive film 45 re-solidifies. A fluorocarbon coating can be applied on the outer wall of the guide post 21 to prevent adhesion to the melted adhesive film 45, facilitating the smooth removal of the guide post 21 after the melted adhesive film 45 re-solidifies.

[0042] At least one other publicly disclosed embodiment also provides a covering device 2 used in the lamination system of the photovoltaic glass 4 as described above, including: a plurality of guide posts 21, and a driving mechanism electrically connected to the control module; a ring body 22 is provided on the outer wall of the guide post 21; the guide post 21 is vertically arranged on the driving mechanism, and the guide post 21 corresponds to the bus bar protrusion 44 in the photovoltaic glass 4; a concave portion 23 adapted to the bus bar protrusion 44 is provided on the top surface of the guide post 21; the control module is configured to control the driving mechanism to drive the guide post 21 to rise, so that after the guide post 21 passes through the heating device 1, the corresponding bus bar protrusion 44 is completely covered by the concave portion 23, and the ring body 22 blocks the lead portion 42 on the photovoltaic glass 4, so as to form an annular cavity 25 between the ring body 22 and the battery chip 43 to accommodate the heated and melted adhesive film 45.

[0043] In an alternative embodiment, the driving mechanism includes: a driving source electrically connected to the control module; a lifting plate 24 is connected to the driving source, and the guiding column 21 is disposed on a surface of the lifting plate 24 close to the photovoltaic glass 4; the control module is configured to control the driving source to drive the lifting plate 24 to rise, so that after the guiding column 21 passes through the heating device 1, the corresponding busbar protrusion 44 is completely covered by the recess 23, and the busbar protrusion 44 is completely separated from the adhesive film 45 in the photovoltaic glass 4; the outer diameter of the ring body 22 is adapted to the lead portion 42 formed on the photovoltaic glass 4, so as to block the lead portion 42 when the corresponding busbar protrusion 44 is completely covered by the recess 23.

[0044] At least one other publicly disclosed embodiment also provides a lamination method for a lamination system using the above-mentioned photovoltaic glass 4, including: the control module controls the heating device 1 to heat the photovoltaic glass 4, and controls the coating device 2 to coat the busbar protrusion 44 in the photovoltaic glass 4 when the heating device 1 is heating; the control module controls the driving mechanism to drive the guiding column 21 to rise, so that after the guiding column 21 passes through the heating device 1, the corresponding busbar protrusion 44 is completely covered by the recess 23, and the ring body 22 blocks the lead portion 42 on the photovoltaic glass 4, so as to form an annular cavity 25 between the ring body 22 and the battery cell 43 to accommodate the melted adhesive film 45 after heating.

[0045] In summary, the lamination system of the present photovoltaic glass 4 includes: a control module, and a heating device 1 and a coating device 2 electrically connected to the control module; the heating device 1 bears the photovoltaic glass 4, and the control module is configured to control the heating device 1 to heat the photovoltaic glass 4, and control the coating device 2 to coat the busbar protrusion 44 in the photovoltaic glass 4 when the heating device 1 is heating; wherein the coating device 2 includes: a plurality of guiding columns 21, and a driving mechanism electrically connected to the control module; a ring body 22 is disposed on the outer wall of the guiding column 21; the guiding columns 21 are vertically disposed on the driving mechanism, and the guiding columns 21 correspond to the busbar protrusions 44 in the photovoltaic glass 4; a recess 23 adapted to the busbar protrusion 44 is formed on the top surface of the guiding column 21; the control module is configured to control the driving mechanism to drive the guiding column 21 to rise, so that after the guiding column 21 passes through the heating device 1, the corresponding busbar protrusion 44 is completely covered by the recess 23, and the ring body 22 blocks the lead portion 42 on the photovoltaic glass 4, so as to form an annular cavity 25 between the ring body 22 and the battery cell 43 to accommodate the melted adhesive film 45 after heating, realizing that when the adhesive film 45 is melted by heating, the melted adhesive film 45 can be blocked in the annular cavity 25 to uniformly cover the EVA adhesive on the inner wall of the annular cavity 25, and avoiding the existence of exposed parts on the inner wall of the lead portion 42.

[0046] In the description of the embodiments of the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention. In addition, terms such as "first", "second" and other numerical terms used herein do not imply an order or sequence unless clearly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer or section discussed above may be referred to as the second element, component, region, layer or section.

[0048] Spatially relative terms, such as "inner", "outer", "below", "beneath", "lower", "above", "upper", etc., may be used herein to facilitate describing the relationship of one element or feature to another element or feature as illustrated in the figures. In addition to the orientation depicted in the figures, spatially relative terms are intended to encompass different orientations of the device in use or operation. For example, if the device in the figures is turned over, an element described as "below" or "beneath" another element or feature will then be oriented "above" the other element or feature. Thus, the exemplary term "below" can encompass both an orientation of above and below.

[0049] Based on the above inspiration from the ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A lamination system for photovoltaic glass, characterized in that, Comprising: a control module, and a heating device (1) and a coating device (2) electrically connected to the control module; the heating device (1) and the coating device (2) are in a vacuum environment; the heating device (1) bears a photovoltaic glass (4); the control module is configured to control the heating device (1) to heat the photovoltaic glass (4), and control the coating device (2) to coat the bus bar protrusion (44) in the photovoltaic glass (4) during heating; wherein, the coating device (2) comprises: a plurality of guide posts (21), and a driving mechanism electrically connected to the control module; wherein, a ring body (22) is arranged on the outer wall of the guide post (21); the guide posts (21) are vertically arranged on the driving mechanism, and the guide posts (21) correspond to the bus bar protrusions (44) in the photovoltaic glass (4); a concave portion (23) adapted to the bus bar protrusion (44) is formed on the top surface of the guide post (21); the control module is further configured to control the driving mechanism to drive the guide post (21) to rise, so that after the guide post (21) passes through the heating device (1), the corresponding bus bar protrusion (44) is covered by the concave portion (23); at this time, the ring body (22) seals the column gap between the lead portion (42) in the photovoltaic glass (4) and the guide post (21), so as to form an annular cavity (25) for accommodating the melted adhesive film (45) after heating between the ring body (22) and the battery cell (43).

2. The lamination system for photovoltaic glass according to claim 1, wherein: the driving mechanism comprises: a driving source electrically connected to the control module; a lifting plate (24) is connected to the driving source, and the guide post (21) is arranged on the surface of the lifting plate (24) close to the photovoltaic glass (4); the control module is configured to control the driving source to drive the lifting plate (24) to rise, so that after the guide post (21) passes through the heating device (1), the corresponding bus bar protrusion (44) is completely covered by the concave portion (23), and the bus bar protrusion (44) is completely separated from the adhesive film (45) in the photovoltaic glass (4); the outer diameter of the ring body (22) is adapted to the lead portion (42) formed on the photovoltaic glass (4) to block the lead portion (42) when the corresponding bus bar protrusion (44) is completely covered by the concave portion (23).

3. The lamination system for photovoltaic glass according to claim 1, wherein: the photovoltaic glass (4) comprises: a pair of upper and lower backplane glasses (41); a battery cell (43) is arranged between the two backplane glasses (41), and a plurality of bus bar protrusions (44) are arranged on the battery cell (43); an adhesive film (45) is arranged between the battery cell (43) and the two backplane glasses (41); a dug hole (46) corresponding to the bus bar protrusion (44) is formed on one of the adhesive films (45), and the diameter of the dug hole (46) is larger than the diameter of the bus bar protrusion (44). A lead portion (42) corresponding to the bus bar protrusion (44) is provided on one of the back plate glasses (41), and the lead portion (42) penetrates the back plate glass (41) along the thickness direction of the back plate glass (41), so that the bus bar protrusion (44) is located in the corresponding lead portion (42) after passing through the hole (46); During the heating process of the photovoltaic glass (4), the back panel glass (41) provided with the lead portion (42) is arranged downward.

4. The photovoltaic glass lamination system according to claim 3, characterized in that: The heating device (1) comprises: a silica gel heating plate (11) electrically connected to the control module; The silica gel heating plate (11) carries the photovoltaic glass (4); The silica gel heating plate (11) is provided with a through hole (12) corresponding to the lead portion (42), and the inner diameter of the through hole (12) is adapted to the inner diameter of the lead portion (42); The lifting plate (24) is located below the silica gel heating plate (11); The control module is configured to control the silicone heating plate (11) to heat the photovoltaic glass (4) so ​​as to melt the adhesive film (45), and to control the driving source to drive the lifting plate (24) to rise so that the guide column (21) passes through the through hole (12) and then extends into the concave portion of the lead portion (42).

5. The photovoltaic glass lamination system according to claim 4, characterized in that: The heating device (1) further comprises: a plurality of support bars (13); The support bars (13) are arranged side by side, and the silica gel heating plate (11) is mounted on the top surface of the support bars (13); The lifting plate (24) in the driving mechanism is arranged between a pair of supporting bars (13).

6. The photovoltaic glass lamination system according to claim 4, characterized in that: The material of the guide column (21) is the same as that of the silicone heating plate (11), so that heat is transferred through the guide column (21) when the silicone heating plate (11) is heated.

7. A lamination method for a lamination system using the photovoltaic glass as described in claim 1, characterized in that, include: The control module controls the heating device (1) to heat the photovoltaic glass (4), and when the heating device (1) is heating, controls the covering device (2) to cover the bus bar protrusions (44) in the photovoltaic glass (4); The control module controls the driving mechanism to drive the guide column (21) to rise, so that after the guide column (21) passes through the heating device (1), the corresponding bus bar protrusion (44) is completely covered by the recess (23), and the ring body (22) blocks the lead portion (42) on the photovoltaic glass (4), so that an annular cavity (25) is formed between the ring body (22) and the battery cell (43) to accommodate the melted adhesive film (45) after heating.

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