CN215644538U - Laminating device and laminating equipment - Google Patents

Abstract

The utility model discloses a laminating device and laminating equipment, and relates to the technical field of photovoltaics, so that all parts of a photovoltaic laminated member are uniformly stressed in the laminating process. The laminating device is used for laminating the photovoltaic laminated member and comprises a pressurizing mechanism and a bearing member; the bearing piece is used for bearing the photovoltaic laminated piece; the pressurizing mechanism is arranged opposite to the bearing piece; when laminating, the pressurizing mechanism is in sealing contact with the edge of the photovoltaic laminated piece on the bearing piece to form a first sealed space; the pressurizing mechanism is used for introducing pressurized gas into the first sealed space. The laminating device and the laminating equipment provided by the utility model are used for manufacturing a photovoltaic module.

Description

Laminating device and laminating equipment

Technical Field

The utility model relates to the technical field of photovoltaics, in particular to a laminating device and laminating equipment.

Background

The lamination device of the photovoltaic module is a device which applies pressure to the outer surface of the photovoltaic lamination in a heating state so as to tightly bond the layers of the photovoltaic lamination.

During the lamination process of a photovoltaic laminate, pressure is typically applied to the photovoltaic laminate using a silicone sheet. However, when the silica gel plate applies pressure to the photovoltaic laminated member, the problems that the force application is uneven and all parts of the photovoltaic laminated member are stressed unevenly easily occur.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a laminating device and laminating equipment, which are used for enabling all parts of a photovoltaic laminated member to be uniformly stressed in a laminating process.

In a first aspect, the present invention provides a laminating apparatus. The laminating device is used for laminating the photovoltaic laminated member and comprises a pressurizing mechanism and a bearing member; the bearing piece is used for bearing the photovoltaic laminated piece; the pressurizing mechanism is arranged opposite to the bearing piece; when laminating, the pressurizing mechanism is in sealing contact with the edge of the photovoltaic laminated piece on the bearing piece to form a first sealed space; the pressurizing mechanism is used for introducing pressurized gas into the first sealed space.

When the technical scheme is adopted, the pressurizing mechanism and the bearing piece are oppositely arranged, and during lamination, the pressurizing mechanism is in sealing contact with the edge of the photovoltaic laminated piece to form a first sealing space. When the pressurizing mechanism introduces the pressurized gas into the first sealed space, the pressurized gas in the first sealed space is in direct contact with the photovoltaic laminated member, and applies pressure to the photovoltaic laminated member. Because the pressure gas in the first sealed space has better fluidity, the pressure of the pressure gas in each part of the first sealed space, which is in contact with the photovoltaic laminated member, is more balanced. At this time, the photovoltaic stack is subjected to a relatively uniform pressure of the pressurized gas throughout the portion of the main body exposed to the first sealed space, except at the edges. On the basis, as long as the pressure applied to the edge of the photovoltaic laminate by the pressurizing mechanism is controlled to be equal to the pressure applied to the main part of the photovoltaic laminate by the pressurized gas, the whole photovoltaic laminate can be uniformly stressed, and the generation of bubbles can be reduced.

Compared with the prior art that the silica gel plate is in contact with the photovoltaic laminated member to apply pressure, the utility model applies pressure by using the pressurized gas to be in contact with the main body part of the photovoltaic laminated member, and the pressurizing mechanism is only in contact with the edge of the photovoltaic laminated member. At the moment, high-temperature cloth between the silica gel plate and the photovoltaic laminated member is omitted, so that the processes of laying the high-temperature cloth between the silica gel plate and the photovoltaic laminated member and cleaning the high-temperature cloth can be saved, the process can be simplified, and the cost can be saved. In addition, the utility model utilizes the pressurized gas to contact with the main body part of the photovoltaic laminated member to apply pressure, and a silica gel plate is not required to be in direct physical contact with the photovoltaic laminated member, so that the damage of foreign matters such as glass slag carried by a pressurizing mechanism and folds to the photovoltaic laminated member can be reduced, and the risks of pits, dents and splinters caused by lamination can be reduced.

In some implementations, the pressurizing mechanism includes a pressurizing member and an inflation system, the pressurizing member is disposed opposite to the carrier, the pressurizing member is provided with a vent hole, and the vent hole is communicated with the inflation system; during lamination, the pressurizing piece is in sealing contact with the edge of the photovoltaic laminated piece to form a first sealed space, and the inflation system is used for introducing pressurized gas into the first sealed space. At this point, the pressurizing member provides a holding space for the photovoltaic stack to contact with the pressurized gas, and the inflation system provides the pressurized gas. The combination of the pressurizing member and the inflation system can realize that the main part of the photovoltaic laminated member is directly contacted with the pressurized gas, thereby reducing the contact area of the photovoltaic laminated member and the pressurizing mechanism.

In some implementations, the pressure member is a plate-like structure. In this case, the plate-like structure of the pressure member and the photovoltaic laminate each have a relatively flat surface. The pressing member and the photovoltaic laminate may form a relatively regular first sealed space. That is to say, the height of first confined space everywhere is unanimous, is favorable to the even distribution of pressurized gas, can further improve the atress homogeneity of photovoltaic laminated member.

In some implementations, the material of the press is a hard material. In this case, the space size of the first sealed space formed by the pressurizing member and the photovoltaic stack can be kept constant, and thus the problems of pressurized gas turbulence and uneven pressure due to the variation in the space size can be avoided.

In some implementations, the press is a steel plate or a tempered glass plate. In this case, the first sealed space formed by the pressurizing plate and the photovoltaic laminate is not only regular in spatial shape and uniform in height, but also not easy to deform and is constant in spatial size. Based on this, it may be further ensured that the pressurized gas in the first sealed space exerts a uniform force on the photovoltaic stack.

In some implementations, the pressing mechanism further includes a lifting device, and a free end of the lifting device is fixedly connected to the pressing member. At the moment, the lifting device can realize the ascending and descending of the pressurizing piece, so that the pressurizing piece and the photovoltaic laminated piece can be close to or far away from each other, the pressurizing piece can be conveniently in sealed contact with the edge of the photovoltaic laminated piece, and the working efficiency is improved.

In some implementations, the inflation system is a hot gas inflation system configured to introduce hot gas into the first enclosed space. At this time, the pressurized gas is hot gas, and has a high temperature. When the pressurized gas is in contact with the photovoltaic stack, the pressurized gas can act to heat the photovoltaic stack while applying pressure. During lamination, one side of the photovoltaic laminated piece is heated by the bearing piece, and the other side of the photovoltaic laminated piece is heated by the pressurized gas, so that the two sides of the photovoltaic laminated piece are both provided with higher temperature, the hot melt adhesive crosslinking time can be shortened, and the two layers of hot melt adhesives are uniformly crosslinked.

In some implementations, the carrier has a heating assembly. At this moment, combine heating element and carrier together for the carrier can be convenient heat the photovoltaic lamination, thereby can save solitary heating process. In addition, in the laminating process, the bearing piece has a heating function, so that the photovoltaic laminated piece can be heated while laminating, the packaging adhesive film layer is ensured to be in a molten state, and the laminating working efficiency is improved.

In some implementations, the laminating device further includes a first sealing member, and the first sealing member is located between the pressing mechanism and the photovoltaic laminate during laminating, and the pressing mechanism is connected to the edge of the photovoltaic laminate in a sealing manner through the first sealing member. In this case, the first sealing member can better achieve the sealing connection between the pressing member and the photovoltaic laminated member, and ensure that the first sealing space has better sealing performance. Therefore, leakage of the pressurized gas can be avoided, the pressurized gas can be ensured to apply enough pressure to the photovoltaic laminated piece, and the laminating efficiency is improved.

In some implementations, the first seal is fixedly coupled to the pressurization mechanism. At this time, the positions of the first sealing member and the pressing member may be fixed, and the first sealing member and the pressing member may be sealingly connected in advance before lamination. When laminating, make first sealing member and photovoltaic lamination's border sealing connection can form first sealed space. In this case, the process can be simplified, providing work efficiency.

In some implementations, the first seal is independently disposed. At this time, the first sealing member has high flexibility, and is convenient to replace, maintain and adjust the position. Moreover, different first sealing elements can be adapted to photovoltaic laminated members with different specifications, so that the sealing performance of the photovoltaic laminated members and the pressurizing members can be improved.

In some implementations, the first seal is an annular structure. At this time, the solid structure of the first sealing element with the annular structure is in contact with the edge of the photovoltaic laminate, and the hollow area of the annular structure exposes the main part (central area) of the photovoltaic laminate. Based on this, the first sealing member provides a receiving space for the pressurized gas while achieving the sealing contact.

In some implementations, the first encapsulant has a shape that is the same as a shape of the photovoltaic stack. In this case, the shape of the first encapsulant matches the shape of the edge of the photovoltaic laminate, facilitating sealing contact therewith and exposing a substantial portion of the photovoltaic laminate.

In some implementations, the outer ring of the first seal is the same size as the photovoltaic stack. At this time, the first sealing ring can be further ensured to be in sealing contact with the edge of the photovoltaic laminated member, and the main part with more photovoltaic laminated members is exposed.

In some implementations, the first seal has a height of 3mm to 10mm and a width of 5mm to 20 mm. In this range of height and width, the space (first sealed space) surrounded by the first sealing member can be ensured to be large, and sufficient space is provided for the pressurized air. And when the width is larger than the width, the inner ring of the first sealing element is positioned outside the creepage distance of the photovoltaic laminated member, so that the influence of the laminating process on the electrical property of the photovoltaic laminated member can be avoided.

In some implementations, the first seal includes, along a height direction of the first seal, a first flexible contact layer, a hard structural layer, and a second flexible structural layer that are stacked; the hard structural layer is positioned between the first flexible contact layer and the second flexible contact layer. At this time, the first flexible contact layer may be in contact with the pressing member, the second flexible contact layer may be in contact with the photovoltaic laminate, and the hard structural layer may serve as a support. Based on this, two flexible contact layers of the first sealing element can flexibly contact with the pressurizing piece and the photovoltaic laminated piece, so that the sealing contact performance can be ensured, and the stability of the first sealing element is ensured by using the hard structural layer, and the first sealing element is prevented from being twisted and inclined.

In some implementations, the first seal further includes a reinforcing mesh disposed at an inner circumference of the first seal. After the reinforcing net is arranged, the pressure applied to the first sealing element by the pressurized gas can be offset, the deformation of the first sealing element is avoided, and the stability of the first sealing element and the sealing performance of the first sealing space can be further ensured.

In some implementations, the reinforcing mesh is provided at an inner circumference of the rigid structural layer. At the moment, the space surrounded by the first flexible contact layers is arranged on the upper side of the reinforcing net, and the space surrounded by the second flexible contact layers is arranged on the lower side of the reinforcing net, so that damage to the photovoltaic laminated member caused by contact of the reinforcing net and the photovoltaic laminated member can be avoided.

In some implementations, the laminating device further includes a cover movably connected to the pressurizing mechanism, and the cover and the carrier form a second sealed space during laminating; the second sealed space is located at the periphery of the first sealed space. At this time, the second closed space may be used for the vacuum process. A second sealed space, outside the first sealed space, may allow for evacuation of the photovoltaic stack before and during lamination.

In some implementations, the laminating apparatus further includes a second sealing member, and the cover is sealingly connected to the carrier via the second sealing member during laminating. At this time, the second sealing member may improve the sealing performance of the second sealed space.

In a second aspect, the present invention provides a laminating apparatus. The laminating device comprises the laminating apparatus described in the first aspect or any one of the possible implementations of the first aspect.

The advantages of the laminating arrangement provided by the second aspect may be found in the advantages of the laminating apparatus described in the first aspect or any one of the possible implementations of the first aspect, which will not be further elaborated herein.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is a schematic structural diagram of a laminating apparatus provided in an embodiment of the present invention;

fig. 2 is a schematic perspective view of a first sealing member of a laminating apparatus according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a first sealing member of a laminating apparatus according to an embodiment of the present invention.

Reference numerals:

in fig. 1-3, 10-a pressurizing mechanism, 11-a pressurizing member, 111-a vent hole, 12-an inflation system, 121-an air source device, 122-an air pipe, 13-a lifting device, 20-a bearing member, 30-a photovoltaic laminate, 40-a first sealing member, 41-a first flexible contact layer, 42-a rigid structure layer, 43-a second flexible contact layer, 44-a reinforcing net, a-a first closed space, 50-a cover body, B-a second sealed space, and 60-a second sealing member.

Detailed Description

In order to facilitate clear description of technical solutions of the embodiments of the present invention, in the embodiments of the present invention, terms such as "first" and "second" are used to distinguish the same items or similar items having substantially the same functions and actions. Those skilled in the art will appreciate that the terms "first," "second," etc. do not denote any order or quantity, nor do the terms "first," "second," etc. denote any order or importance.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

It is to be understood that the terms "exemplary" or "such as" are used herein to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

In the present invention, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a and b combination, a and c combination, b and c combination, or a, b and c combination, wherein a, b and c can be single or multiple.

Whether a single-glass assembly or a dual-glass assembly, a photovoltaic assembly is typically composed of a five-layer structure package prior to framing. Wherein, the middle layer is a battery string group formed by connecting a plurality of battery pieces in series and then converging and paving the battery pieces. The front surface of the battery string group is bonded with the toughened glass of the light receiving surface by using a layer of hot melt adhesive (EVA or POE). The back of the battery string group is bonded with the glass or the back plate on the back surface by using a layer of hot melt adhesive (EVA or POE).

The step of bonding the 5-layer stacked structure is a lamination process, and a commonly used automated apparatus is a laminator. The laminating machine generally takes a silica gel plate as a boundary and is divided into an upper cavity and a lower cavity, and the laminated part is positioned in the lower cavity of the laminating machine after entering the laminating machine. The lamination process is generally divided into two steps, evacuation and pressurization. When the vacuum pumping is carried out, the upper cavity and the lower cavity are simultaneously vacuumized, and no pressure exists between the upper cavity and the lower cavity. The vacuumizing process is mainly characterized in that the two layers of hot melt adhesives in the laminated member are fully melted into liquid through heating and temperature rise, and air in the laminated member is completely exhausted in a vacuum pump exhausting mode. In the pressurizing process after vacuumizing, a certain amount of gas is filled into the upper cavity of the laminating machine, the lower cavity is continuously vacuumized, the atmospheric pressure of the upper cavity is transmitted to the silica gel plate, the pressure is transmitted to the lower component after the silica gel plate is deformed, and the hot melt adhesive is more compact and continuously subjected to a crosslinking reaction in the pressurizing process. When the cross-linking rate of the hot melt adhesive meets the requirement, the lower cavity is inflated to counteract the pressure of the upper cavity, the components are discharged, and the whole laminating process is finished.

In the lamination process, the laminator needs to transmit pressure to the laminated member through the silicone plate, and the contact area between the silicone plate and the laminated member is the upper surface area of the laminated member, and the contact area is large. This situation causes the following problems in the current production process: 1. deformation quantity of the periphery and the middle position of the silica gel plate is different in the laminating process, so that the lower laminated piece is stressed unevenly, and air bubbles are easily generated. 2. In the downward pressurizing process of the silica gel plate, part of heat of the laminated member can be taken away, so that the problems of prolonging of the cross-linking time of the hot melt adhesive and uneven cross-linking of the two layers of hot melt adhesive are caused. 3. In order to avoid overflowing from the edge of the laminated member after the hot melt adhesive is melted and bonding to the silica gel plate, a layer of high-temperature cloth is often added between the silica gel plate and the laminated member, so that a series of problems such as cleaning of the high-temperature cloth are brought. 4. After the silica gel plate is used for a long time, foreign matters such as glass slag and the like are easily introduced, and creases are easily formed on the edge of the silica gel plate. This situation easily leads to the risk of back sheet pitting, denting or splintering of the photovoltaic module.

In order to solve the above technical problems, the present invention provides a laminating apparatus. The lamination apparatus is used to laminate a photovoltaic laminate 30. Specifically, in the lamination process, the lamination apparatus laminates the photovoltaic laminate 30 into a laminate, which is framed to form a photovoltaic module. The photovoltaic laminated member 30 refers to a front cover plate, a front packaging adhesive film layer, a battery string group, a back packaging adhesive film layer and a back plate, and the five layers are stacked.

As shown in fig. 1, the laminating apparatus includes a pressing mechanism 10 and a carrier 20; the carrier 20 is used for carrying a photovoltaic laminate 30; the pressing mechanism 10 is disposed opposite to the carrier 20. During lamination, the pressurizing mechanism 10 is in sealing contact with the edge of the photovoltaic laminated member 30 on the carrier 20 to form a first sealed space a; the pressurizing mechanism 10 is used for introducing pressurized gas into the first sealed space a.

In particular, as shown in fig. 1, the photovoltaic laminate 30 is placed on the carrier 20, and the pressing mechanism 10 and the carrier 20 are close to each other, so that the pressing mechanism 10 is in sealing contact with the edge of the photovoltaic laminate 30 to form a first sealed space a. Then, the pressurizing mechanism 10 introduces a pressurized gas into the first sealed space a, and the pressurized gas applies pressure to the photovoltaic laminate 30, so that the photovoltaic laminate 30 is tightly pressed together.

As shown in fig. 1, based on the structure of the laminating apparatus, the pressing mechanism 10 is disposed opposite to the carrier 20, and the pressing mechanism 10 is in sealing contact with the edge of the photovoltaic laminate 30 to form a first sealed space a during laminating. After the pressurizing mechanism 10 supplies the pressurized gas into the first sealed space a, the pressurized gas in the first sealed space a directly contacts the photovoltaic laminate 30 and applies pressure to the photovoltaic laminate 30. Due to the good flowability of the pressurized gas in the first sealed space a, the pressure of the pressurized gas in each part of the first sealed space a, which is in contact with the photovoltaic laminate 30, is relatively equalized. At this time, the pressure of the pressurized gas is relatively uniform throughout the main portion of the photovoltaic stack 30 exposed to the first sealed space a except for the edge. On the basis, as long as the pressure applied to the edge of the photovoltaic laminate by the pressurizing mechanism 10 is controlled to be equal to the pressure applied to the main part of the photovoltaic laminate 30 by the pressurized gas, the whole photovoltaic laminate 30 can be uniformly stressed, and the generation of bubbles can be reduced.

Compared with the prior art in which a silicone plate is in contact with the photovoltaic laminate 30 to apply pressure, the pressure applying mechanism 10 only contacts with the edge of the photovoltaic laminate 30 by using a pressurized gas to apply pressure in contact with the main body part of the photovoltaic laminate 30. At this time, the high-temperature cloth between the silica gel plate and the photovoltaic laminated member 30 is omitted, so that the processes of laying the high-temperature cloth between the silica gel plate and the photovoltaic laminated member 30 and cleaning the high-temperature cloth can be omitted, the process can be simplified, and the cost can be saved. In addition, the utility model utilizes the pressurized gas to contact with the main body part of the photovoltaic laminated member 30 to apply pressure, and a silica gel plate is not required to be directly in physical contact with the photovoltaic laminated member 30, so that the damage of foreign matters such as glass slag carried by the pressurizing mechanism 10 and folds to the photovoltaic laminated member 30 can be reduced, and the risks of pits, dents and splinters caused by lamination can be reduced.

As shown in fig. 1, the carrier 20 is a structure for carrying the photovoltaic laminate 30 as long as the function of carrying the photovoltaic laminate 30 can be achieved. The present invention is not particularly limited in its structure. For example, the carrier 20 may be a solid plate-like structure. The photovoltaic laminate 30 is placed on a carrier 20 of a plate-like structure. For another example, the carrier 20 may be a frame structure having a carrying surface. The photovoltaic stack 30 is positioned on the load-bearing side of the frame structure carrier 20.

The carrier 20 has a heating assembly (not shown). At this time, the heating assembly is combined with the carrier 20, so that the carrier 20 can conveniently heat the photovoltaic laminate 30, and a separate heating process can be saved. In addition, in the lamination process, the bearing member 20 has a heating function, so that the photovoltaic laminated member 30 can be heated while laminating, the encapsulation adhesive film layer is ensured to be in a molten state, and the lamination work efficiency is improved. In particular implementations, the carrier 20 heats the photovoltaic stack 30 when the photovoltaic stack 30 is placed on the carrier 20.

The heating component can be a resistance heating wire, can also be a heating gas, can also be a magnetic heating element, and is not limited to this. The present invention does not limit the specific structure of the heating assembly as long as the heating function can be achieved.

As shown in fig. 1, the pressurizing mechanism 10 includes a pressurizing member 11 and an inflation system 12, the pressurizing member 11 is disposed opposite to the carrier 20, the pressurizing member 11 is provided with a vent hole 111, and the vent hole 111 is communicated with the inflation system 12; during lamination, the pressurizing member 11 is in sealing contact with the edge of the photovoltaic laminate 30 to form a first sealed space a, and the inflation system 12 is used for introducing pressurized gas into the first sealed space a. At this time, the pressurizing member 11 provides a receiving space for the photovoltaic laminate 30 to contact with the pressurized gas, and the inflation system 12 provides the pressurized gas. The combination of the pressurization member 11 and the inflation system 12 can realize that the main part of the photovoltaic laminate 30 is directly contacted with the pressurized gas, thereby reducing the contact area between the photovoltaic laminate 30 and the pressurization mechanism 10.

Specifically, the vent hole 111 may be a one-way vent hole 111, allowing the pressurized gas to enter the first sealed space a, preventing the pressurized gas from being discharged through the vent hole 111. The number of the vent holes 111 may be one or more. When the number of the vent holes 111 is plural, the plural vent holes 111 are uniformly distributed on the pressing member 11.

As shown in FIG. 1, the inflation system 12 may include an air supply assembly 121 and an air delivery conduit 122 in communication. The gas source device 121 generates pressurized gas, and the gas pipe 122 is communicated with the gas source device 121 and the vent hole 111 and used for conveying the pressurized gas. The inflation system 12 may be a hot gas inflation system 12. The inflation system 12 is used to introduce hot air into the first sealed space a. At this time, the pressurized gas is hot gas, and has a high temperature. When the pressurized gas is in contact with the photovoltaic stack 30, the pressurized gas may act to heat the photovoltaic stack 30 while applying pressure. During lamination, one side of the photovoltaic laminated member 30 is heated by the bearing member 20, and the other side is heated by the pressurized gas, so that both sides of the photovoltaic laminated member 30 have higher temperature, thereby shortening the cross-linking time of the hot melt adhesive and enabling the cross-linking of the two layers of the hot melt adhesive to be uniform. In practice, the temperature of the hot gas may be the same as the heating temperature of the carrier 20.

As shown in fig. 1, the pressing member 11 may have a plate-like structure. At this time, the pressing member 11 and the photovoltaic laminate 30, both having the plate-like structure, have relatively flat surfaces. The pressing member 11 and the photovoltaic laminate 30 may form a relatively regular first sealed space a. That is, the heights of the first sealed space a are consistent, so that the uniform distribution of the pressurized gas is facilitated, and the stress uniformity of the photovoltaic laminate 30 can be further improved. Specifically, the thickness of the plate-shaped pressing member 11 may be set according to the performance requirements of the pressing member 11. The dimensions of the pressure member 11 should be no smaller than the dimensions of the photovoltaic stack 30, i.e. the orthographic projection of the pressure member 11 on the photovoltaic stack 30 is at least able to cover the photovoltaic stack 30. In practical applications, the pressing member 11 may be a solid pressing plate or a hollow pressing plate. It will be understood that when the laminating device does not comprise the first sealing member 40 described below, the edge of the pressing member 11 should have a protrusion for contacting the photovoltaic laminate 30, forming the first sealed space a.

It should be noted that the directions of the heights mentioned in the embodiments of the present invention are all consistent with the stacking direction of the photovoltaic stacks 30.

The material of the pressing member 11 may be a hard material. In this case, the space size of the first sealed space a formed by the pressure member 11 and the photovoltaic stack 30 can be kept constant, and the problem of pressure unevenness due to the fluctuation of the space size and the fluctuation of the pressurized gas can be avoided. The hard material is a material in which the pressurizing member 11 does not deform after the pressurized gas in the first sealed space a reaches design parameters. For example, the hard material may be steel, hard glass, an alloy material, or the like.

In practical applications, the pressing member 11 may be a steel plate, and may be a tempered glass plate. In this case, the first sealed space a formed by the pressure plate and the photovoltaic laminate 30 is not only regular in spatial shape and uniform in height, but also hardly deformed and has a constant spatial size. Based on this, it may be further ensured that the pressurized gas in the first sealed space a exerts a uniform force on the photovoltaic stack 30.

As shown in fig. 1, the pressing mechanism 10 may further include a lifting device 13. The free end of the lifting device 13 is fixedly connected with the pressure piece 11. At this time, the lifting device 13 can raise and lower the pressing member 11, so that the pressing member 11 and the photovoltaic laminated member 30 can be close to or far away from each other, thereby conveniently achieving the sealing contact between the pressing member 11 and the edge of the photovoltaic laminated member 30 and improving the working efficiency. For example, the lifting device 13 may be an electric lifting rod, a hydraulic lifting rod, a pneumatic cylinder, or the like, and is not limited thereto. In specific implementation, the lifting device 13 drives the pressing member 11 to approach the photovoltaic stack 30, so as to form a first sealed space a.

As shown in fig. 1 and 2, the laminating apparatus may further include a first sealing member 40. During lamination, the first sealing member 40 is located between the pressing mechanism 10 and the photovoltaic laminate 30, and the pressing mechanism 10 is connected to the edge of the photovoltaic laminate 30 through the first sealing member 40 in a sealing manner. Specifically, the pressing member 11 of the pressing mechanism 10 is sealingly connected to the edge of the photovoltaic laminate 30 through the first sealing member 40. At this time, the first sealing member 40 can better achieve the sealing connection between the pressing member 11 and the photovoltaic laminate 30, and ensure that the first sealing space a has better sealing performance. Based on this, can avoid the pressurized gas to leak, ensure that the pressurized gas exerts sufficient pressure to photovoltaic laminate 30, improve lamination efficiency.

The first sealing member 40 may be fixedly connected to the pressurizing mechanism 10. Specifically, the first sealing member 40 is fixedly connected to the pressing member 11. At this time, it is possible to fix the positions of the first seal member 40 and the pressure member 11 and to hermetically connect the first seal member 40 and the pressure member 11 in advance before lamination. The first sealed space a is formed by the first sealing member 40 being sealingly connected to the edge of the photovoltaic laminate 30 during lamination. In this case, the process can be simplified, providing work efficiency. In practice, the first sealing member 40 may be bonded to the pressure member 11 or connected by a fastener.

The first sealing member 40 may be provided independently, that is, the first sealing member 40 is not connected to the pressure member 11 and is not connected to the carrier member 20, and the first sealing member 40 is a separate structure. It is sufficient to place it between the pressure member 11 and the edge of the photovoltaic laminate 30. At this time, the first sealing member 40 has high flexibility, facilitating replacement, maintenance and position adjustment. Moreover, different first sealing members 40 can be adapted for different specifications of the photovoltaic laminate 30, so that the sealing performance of the photovoltaic laminate 30 and the pressing member 11 can be improved. In specific implementation, the first sealing member 40 is placed at an edge position of the photovoltaic laminate 30, and then the lifting device 13 is used to drive the pressing member 11 to descend, so that the pressing member 11 is in close contact with the first sealing member 40, and a first sealed space a is formed.

As shown in fig. 1 and 2, the first sealing member 40 may have a ring-shaped structure. The first sealing element 40 with the annular structure is provided with an inner ring and an outer ring, the solid structure of the first sealing element 40 is arranged between the inner ring and the outer ring, and the area surrounded by the inner ring is a hollow area. At this time, the solid structure of the first sealing member 40 with the annular structure contacts with the edge of the photovoltaic laminate 30, and the hollow area of the annular structure exposes a main portion (central area) of the photovoltaic laminate 30. Based on this, the first sealing member 40 provides a receiving space for the pressurized gas while achieving a sealing contact.

In practical applications, the shape of the first sealing member 40 may be a rectangular ring structure, or may be a square ring structure. The shape of the first seal 40 may match the shape of the photovoltaic stack 30. At this point, the shape of the first sealing member 40 matches the shape of the edge of the photovoltaic stack 30, facilitating sealing contact therebetween and exposing a larger major portion of the photovoltaic stack 30. As shown in fig. 2, the outer contour of the photovoltaic stack 30 is rectangular, and the outer perimeter of the first seal 40 is also rectangular. The outer contour of the photovoltaic stack 30 is square, and the outer perimeter of the first seal 40 is square.

As shown in fig. 1 and 2, the outer ring of the first seal 40 has the same dimensions as the photovoltaic stack 30. At this time, it can be further ensured that the first sealing ring is in sealing contact with the edge of the photovoltaic stacked member 30, and a major part of the photovoltaic stacked member 30 is exposed. For example, if the outer contour of the photovoltaic stack 30 is a rectangle with a x b dimension, the outer ring of the first seal 40 is also a rectangle with a x b dimension.

The height of the first sealing member 40 is 3mm-10mm, and the width of the first sealing member 40 is 5mm-20 mm. The width is the distance between the first seal 40, the outer race and the inner race, which are in an annular configuration. For example, the height of the first seal may be 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 6mm, 7mm, 7.5mm, 8mm, 9mm, 10mm, and the like. The width of the first seal 40 may be 5mm, 6mm, 8mm, 10mm, 12mm, 13mm, 15mm, 17mm, 18mm, 19mm, 20mm, etc. In this range of height and width, the space (first sealed space a) surrounded by the first seal member 40 can be ensured to be large, providing sufficient space for the pressurized air. And, at this width, the inner circle of the first sealing member 40 is located outside the creepage distance of the photovoltaic laminate 30, so that the influence of the lamination process on the electrical performance of the photovoltaic laminate 30 can be avoided.

As shown in fig. 3, the first sealing member 40 may include a first flexible contact layer 41, a hard structure layer 42, and a second flexible structure layer, which are stacked, along a height direction of the first sealing member 40; the rigid structure layer 42 is located between the first flexible contact layer 41 and the second flexible contact layer 43. At this time, the first flexible contact layer 41 may be in contact with the pressing member 11, the second flexible contact layer 43 may be in contact with the photovoltaic laminate 30, and the hard structural layer 42 may serve as a support. Based on this, the two flexible contact layers of the first sealing member 40 can flexibly contact with the pressing member 11 and the photovoltaic laminate 30, so that the sealing contact performance can be ensured, and the stability of the first sealing member 40 is ensured by the rigid structure layer 42, so that the first sealing member 40 is prevented from being twisted and inclined. For example, the material of the first flexible contact layer 41 and the second flexible contact layer 43 may be a rubber material or other flexible sealing material. The material of the hard structural layer 42 may be aluminum alloy or steel.

As shown in fig. 1 and 3, the first sealing element 40 may further include a reinforcing mesh 44, and the reinforcing mesh 44 is disposed at an inner circumference of the first sealing element 40. That is, the edge of the reinforcing mesh 44 is fixed to the inner ring of the first seal member 40. During lamination, the pressurized gas may exert an outward pressure on the first seal member 40. After the reinforcing net 44 is provided, the pressure applied to the first sealing member 40 by the pressurized gas can be offset, so that the deformation of the first sealing member 40 is avoided, and the stability of the first sealing member 40 and the sealing performance of the first sealing space a can be ensured. The reinforcing mesh 44 may be a steel mesh, for example. The steel wire mesh can be formed by interweaving a plurality of steel wires or formed by two crossed steel wires.

In practice, as shown in fig. 3, the reinforcing mesh 44 may be provided at the inner periphery of the rigid structure layer 42. At this time, the reinforcing mesh 44 has a space surrounded by the first flexible contact layer 41 on the upper side and a space surrounded by the second flexible contact layer 43 on the lower side, so that damage to the photovoltaic laminate 30 caused by contact between the reinforcing mesh 44 and the photovoltaic laminate 30 can be avoided.

As shown in fig. 1, the laminating apparatus may further include a cover 50. The cover 50 is movably connected with the pressurizing mechanism 10, and when laminating, the cover 50 and the bearing member 20 form a second sealed space B; the second sealed space B is located at the outer periphery of the first sealed space a. At this time, the second closed space may be used for the vacuum process. The second sealed space B, which is outside the first sealed space a, may be evacuated from the photovoltaic stack 30 prior to and during lamination. For example, the cover 50 may have an open receiving space, in which the pressing plate, the first sealing member 40, and the photovoltaic laminate 30 are located when laminating, the lifting device 13 is connected to the pressing plate through the cover 50, and the inflation device is communicated with the vent 111 through the cover 50.

In specific implementation, after the photovoltaic laminate 30 is placed on the carrier 20, the cover 50 is lowered to form the second sealed space B with the carrier 20 while the carrier 20 heats the photovoltaic laminate 30, and a vacuum-pumping operation is performed. Then, the pressure member 11 is controlled to descend by the elevating device 13.

As shown in fig. 1, the laminating apparatus may further include a second sealing member 60. When laminated, the cover 50 is sealingly connected to the carrier 20 by a second seal 60. At this time, the second sealing member 60 may improve the sealing performance of the second sealing space B. In practice, the structure of the second seal 60 may be the same as the structure of the first seal 40. Of course, the second seal 60 may also be configured differently than the first seal 40. For example, the second seal 60 may be a sealing gasket.

The embodiment of the utility model also provides laminating equipment. The laminating device comprises the laminating device. The advantages of the laminating apparatus can be referred to the advantages of the laminating apparatus described above, which will not be described herein.

While the utility model has been described in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed invention, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

While the utility model has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the utility model. Accordingly, the specification and figures are merely exemplary of the utility model as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the utility model. It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (15)

1. A laminating apparatus for laminating a photovoltaic stack, the laminating apparatus comprising a pressing mechanism and a carrier; the carrier is used for carrying a photovoltaic lamination; the pressurizing mechanism is arranged opposite to the bearing piece;

when laminating, the pressurizing mechanism is in sealing contact with the edge of the photovoltaic laminated piece on the bearing piece to form a first sealed space; the pressurizing mechanism is used for introducing pressurized gas into the first sealed space.

2. The laminating device according to claim 1, wherein the pressurizing mechanism includes a pressurizing member and an inflation system, the pressurizing member is disposed opposite to the carrier, the pressurizing member is provided with a vent hole, and the vent hole is communicated with the inflation system; when in lamination, the pressurizing piece is in sealing contact with the edge of the photovoltaic laminated piece to form a first sealed space, and the inflation system is used for introducing pressurized gas into the first sealed space;

wherein the pressurizing piece is of a plate-shaped structure; and/or the material of the pressing piece is a hard material.

3. Laminating device according to claim 2, characterised in that the pressure member is a steel plate or a tempered glass plate.

4. The laminating device according to claim 2, wherein said pressing mechanism further comprises a lifting device, a free end of said lifting device being fixedly connected to said pressing member.

5. The laminating device according to claim 2, wherein said inflation system is a hot gas inflation system for introducing hot gas into said first sealed space.

6. The laminating device of claim 1, wherein the carrier has a heating assembly.

7. The laminating device according to any one of claims 1 to 6, further comprising a first sealing member, wherein the first sealing member is positioned between the pressing mechanism and the photovoltaic laminate during lamination, and wherein the pressing mechanism is sealingly connected to the edge of the photovoltaic laminate via the first sealing member.

8. The laminating device according to claim 7, wherein the first sealing member is fixedly connected to the pressing mechanism, or the first sealing member is provided separately.

9. The laminating device of claim 7, wherein the first seal is an annular structure, the shape of the first seal is the same as the shape of the photovoltaic stack, and the outer ring dimension of the first seal is the same as the dimension of the photovoltaic stack; the height of the first sealing element is 3mm-10mm, and the width of the first sealing element is 5mm-20 mm.

10. The laminating apparatus according to claim 9, wherein the first seal includes a first flexible contact layer, a hard structure layer, and a second flexible contact layer, which are stacked, in a height direction of the first seal; the hard structural layer is located between the first flexible contact layer and the second flexible contact layer.

11. The laminating apparatus of claim 10, wherein the first seal further comprises a reinforcing mesh disposed at an inner circumference of the first seal.

12. The laminating apparatus of claim 11, wherein the reinforcing mesh is provided at an inner circumference of the rigid structural layer.

13. The laminating device according to any one of claims 1 to 6, further comprising a cover body, wherein the cover body is movably connected with the pressurizing mechanism; when laminating, the cover body and the bearing piece form a second sealed space; the second sealed space is located at the periphery of the first sealed space.

14. The laminating apparatus of claim 13, further comprising a second seal, wherein the cover is sealingly connected to the carrier via the second seal during lamination.

15. A laminating device, characterized in that it comprises a laminating apparatus according to any one of claims 1-14.

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