CN210245517U

CN210245517U - Photovoltaic module laminated structure and laminating equipment

Info

Publication number: CN210245517U
Application number: CN201921437200.8U
Authority: CN
Inventors: Lei Miao; 苗蕾; Hongwei Liu; 刘红伟; Yan Yang; 杨燕; Huixiao Wang; 王会晓
Original assignee: Yingli Energy China Co Ltd
Current assignee: Yingli Energy China Co Ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-04-03
Anticipated expiration: 2029-08-30

Abstract

The utility model provides a photovoltaic module laminated structure and a laminating device provided with the same, relating to the technical field of photovoltaic module lamination, comprising high-temperature cloth and a high-temperature resistant flexible elastic part; the high-temperature cloth is bonded on the lower chamber of the laminating machine along the length direction of the glass, and a high-temperature resistant adhesive layer is arranged on the bottom surface of the high-temperature cloth; the high-temperature resistant flexible elastic piece is in bonding fit with the high-temperature resistant adhesive layer. The utility model provides a photovoltaic module laminated structure, through set up high temperature cloth under the laminator on the room, and set up the isolation that high temperature resistant flexible elastic component realized side laminator and glass middle part below the high temperature cloth, avoid the glass middle part to be heated and cause the problem of four corners department perk deformation, high temperature resistant flexible elastic component has lifted certain height for high temperature cloth, avoided the temperature to reach the glass middle part fast, high temperature cloth covers glass width direction's middle part along glass length direction, the temperature heats four corners department to the transmission of glass four corners department, and then the production efficiency of lamination has been improved.

Description

Photovoltaic module laminated structure and laminating equipment

Technical Field

The utility model belongs to the technical field of the photovoltaic module lamination, more specifically say, relate to a photovoltaic module laminated structure and be equipped with this laminated structure's lamination equipment.

Background

The lamination process of the photovoltaic module is a key link of module production, and the traditional lamination process is divided into three parts of vacuumizing, heating the module and curing. The production process is that the stacked components are transported to the inside of a laminating machine for vacuum-pumping treatment, then the components are heated through a heating plate below the laminating machine, solid EVA in the components is melted into liquid, the liquid EVA flows to fill gaps among the battery plate, the back plate and the glass in the components, the three components are bonded together, and then solidification and crosslinking are carried out. The high temperature can improve the crosslinking effect, avoids layering and fracture, but can cause glass deformation, and the low temperature then causes can not fully crosslink, takes place EVA layering fracture easily, influences the quality of product.

In the traditional laminating process, the temperature is reduced to avoid the tilting of glass, but the problems of EVA hollow glue and wrinkles at the middle position of a laminating assembly are caused, a large number of unqualified products are produced, and the production efficiency of the laminating process is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a photovoltaic module laminated structure to the temperature setting that exists among the solution prior art is difficult to make glass deformation and the technical problem that the cross-linking effect is harmonious.

In order to achieve the above object, the utility model adopts the following technical scheme: providing a photovoltaic module laminated structure, which comprises high-temperature cloth and a high-temperature-resistant flexible elastic piece; the high-temperature cloth is bonded on the lower chamber of the laminating machine along the length direction of the glass, a high-temperature resistant adhesive layer is arranged on the bottom surface of the high-temperature cloth, and the width of the high-temperature cloth is smaller than that of the glass; the high-temperature-resistant flexible elastic part is arranged between the high-temperature-resistant adhesive layer and the lower chamber of the laminating machine and is in bonding fit with the high-temperature-resistant adhesive layer, and the horizontal projection area of the high-temperature-resistant flexible elastic part is smaller than that of the high-temperature cloth.

As another embodiment of the present application, the high temperature resistant flexible elastic members are uniformly arranged in a plurality on the bottom surface of the high temperature cloth.

As another embodiment of the present application, the high temperature resistant flexible elastic member is one of a silicone material member or a rubber material member.

As another embodiment of the application, the high-temperature resistant flexible elastic member is a silica gel particle, the silica gel particle is a spherical member, the diameter of the silica gel particle is 2-3mm, the distance between the silica gel particles is 3-5 mm, and the distance between the silica gel particle and the edge of the high-temperature cloth is more than 15 mm.

As another embodiment of the present application, the high temperature cloth and the high temperature resistant adhesive layer are teflon adhesive tapes.

As another embodiment of the present application, the photovoltaic module laminated structure further includes a varnished cloth disposed above the teflon tape and used for contacting and matching with the glass, and a width of the varnished cloth is not less than a width of the teflon tape.

As another embodiment of the present application, the high temperature resistant flexible elastic member is an elastic washer made of rubber.

As another embodiment of the application, the varnished cloth is provided with a plurality of layers which are sequentially arranged from bottom to top.

As another embodiment of the application, the width of the varnished cloth is larger than that of the Teflon adhesive tape, and the thickness of the varnished cloth is 0.3-0.4 mm.

A photovoltaic module laminating apparatus is provided with a photovoltaic module laminating structure.

The utility model provides a photovoltaic module laminated structure's beneficial effect lies in: compared with the prior art, the utility model provides a photovoltaic module laminated structure, through set up high temperature cloth under the laminator on the room, and set up the isolation that high temperature resistant flexible elastic component realized laminator and glass middle part below the high temperature cloth, avoid the glass middle part to be heated and cause the problem of four corners department perk deformation, high temperature resistant flexible elastic component has lifted certain height for high temperature cloth, the temperature has been avoided reaching the glass middle part fast, high temperature cloth covers glass width direction's middle part position along glass length direction, the temperature is to the transmission of glass four corners department, heat four corners department, thermal transmission has been improved when avoiding warping, and then the production efficiency of lamination has been improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural diagram of a photovoltaic module laminated structure according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a photovoltaic module laminated structure provided in the second embodiment of the present invention;

FIG. 3 is a schematic view of a portion I of FIG. 2;

FIG. 4 is a schematic top view of the photovoltaic module laminate and the lower chamber of the laminator of FIG. 1;

fig. 5 is a schematic bottom view of the photovoltaic module laminate structure of fig. 4.

Wherein, in the figures, the respective reference numerals:

100. teflon tape; 110. a high temperature resistant flexible elastic member; 200. varnished cloth; 600. a laminator lower chamber; 610. glass; 620. an EVA adhesive film; 630. a battery piece; 640. welding a strip; 650. a back plate.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 5, a photovoltaic module laminate structure and a laminating apparatus having the same according to the present invention will be described. A photovoltaic module laminated structure including a high temperature cloth and a high temperature resistant flexible elastic member 110; the high-temperature cloth is bonded on the lower chamber 600 of the laminating machine along the length direction of the glass 610, a high-temperature resistant adhesive layer is arranged on the bottom surface of the high-temperature cloth, and the width of the high-temperature cloth is smaller than that of the glass 610; the high-temperature-resistant flexible elastic member 110 is arranged between the high-temperature-resistant adhesive layer and the lower chamber 600 of the laminating machine, and is in bonding fit with the high-temperature-resistant adhesive layer, and the area of the horizontal projection of the high-temperature-resistant flexible elastic member 110 is smaller than that of the high-temperature cloth. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or be indirectly on the other element. The terms "length," "width," "upper," "lower," "front," "back," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular orientation, and thus should not be construed as limiting the invention.

The utility model provides a pair of photovoltaic module laminated structure, compared with the prior art, the utility model provides a photovoltaic module laminated structure, upper surface through room 600 sets up high temperature cloth under the laminator, and set up high temperature resistant flexible elastic component 110 below the high temperature cloth and realize the isolation to glass 610 middle part temperature, avoid glass 610 center department to be heated and cause the problem of four corners department deformation, high temperature resistant flexible elastic component 110 has been raised the certain distance for high temperature cloth on vertical simultaneously, the problem that the quick of temperature led to the fact four corners department perk to warp to glass 610 middle part has also been avoided, high temperature cloth covers glass 610 width direction's middle part along glass 610 length direction, the temperature of being convenient for heats four corners department to glass 610 four corners department transmission, improved thermal transmission when avoiding warping, avoid influencing the production efficiency of lamination.

In the lamination process of the photovoltaic module, the photovoltaic module is generally pressed by placing the photovoltaic module between the upper chamber of the lamination chamber and the lower chamber 600 of the laminator and heating the photovoltaic module from the upper direction to the lower direction between the upper chamber of the lamination chamber and the lower chamber 600 of the laminator. The photovoltaic module comprises glass 610, an EVA (ethylene vinyl acetate) adhesive film 620, a plurality of battery pieces 630, the EVA adhesive film 620 and a backboard 650 which are sequentially arranged from bottom to top, and the adjacent battery pieces 630 are conducted through welding strips 640. The production process comprises the steps of transporting the stacked photovoltaic modules into a laminating machine for vacuumizing, heating the photovoltaic modules through a heating plate of a lower chamber 600 of the laminating machine, melting solid EVA in the photovoltaic modules into liquid, filling the liquid EVA into gaps among the battery cells 630, the back plate 650 and the glass 610 in the photovoltaic modules in a flowing mode, bonding the three components together, and then solidifying and crosslinking. The EVA film 620 is one of the packaging materials of the photovoltaic module, and may be replaced by a POE or PVB member. EVA is a glued membrane, can be used for encapsulating the battery, can prevent that external environment from causing the influence to the battery performance, and it uses with glass 610 jointly, can increase the penetrating of light source, makes the power increase of subassembly, can play good encapsulated effect.

When the photovoltaic module is arranged on the lower chamber 600 of the laminator, the width direction of the glass 610 and the extending direction of the solder ribbon 640 are generally arranged in a parallel form. Referring to fig. 4, the right-angle mark points in the drawing are the mark points required to be corresponding to the glass 610 during installation, the high-temperature cloth and the varnished cloth 200 are both in the form of strip-shaped members, the length direction of the high-temperature cloth and the varnished cloth is set to be parallel to the length direction of the glass 610, namely, perpendicular to the extending direction of the solder strip 640, so that the middle area in the width direction of the glass 610 can be effectively shielded, the effective shielding effect on the center area of the glass 610 is achieved, the problem that four corners of the glass 610 warp and deform due to concentrated heat of the center area of the glass 610 is avoided, in addition, four corners of the glass 610 are in contact with the heating part of the lower chamber 600 of the laminating machine, the heating of the glass 610 at two sides of the four corners and the width is achieved. The high-temperature cloth and the varnished cloth 200 may be set to have the same width, or the varnished cloth 200 may be set to be slightly wider than the high-temperature cloth.

The high-temperature cloth is a new product of a high-performance and multipurpose composite material which is prepared by taking suspended polytetrafluoroethylene emulsion as a raw material and soaking high-performance glass 610 fiber cloth. The high-temperature cloth is used at a temperature between-196 ℃ below zero and 300 ℃ above zero, and has the excellent characteristics of weather resistance and ageing resistance. Through practical application, the high-strength high; in addition, cracks are not generated at the ultra-low temperature, and the original flexibility can be maintained. The high-temperature cloth is also easy to clean various oil stains or other attachments attached to the surface of the high-temperature cloth, and has good chemical corrosion resistance. In this embodiment, the high temperature cloth contacts the lower chamber 600 of the laminator and the glass 610 above, and can be detached for cleaning after being used for a period of time, so as to ensure the product quality of the photovoltaic laminate assembly, the high temperature cloth still has flexibility after being cleaned, and is convenient to be matched with the high temperature resistant flexible elastic member 110 to stretch and retract, so as to appropriately heat the proper position of the glass 610, and the high temperature cloth can be repeatedly used after being cleaned.

In the embodiment, the high-temperature cloth is adopted, and has the advantage of high strength because the high-temperature cloth has the characteristic of good dimensional stability and the elongation coefficient of the high-temperature cloth is less than 5 per thousand. Can not deform after being used for many times, and keeps good heat insulation effect. The high temperature resistant adhesive layer at the bottom of the high temperature cloth can realize the bonding with the high temperature resistant flexible elastic member 110 on the one hand, and can realize the bonding of the high temperature cloth and the lower chamber 600 of the laminating machine at the same time, thereby ensuring that the high temperature cloth is positioned at the position of the lower chamber 600 of the laminating machine corresponding to the glass 610 for placing the photovoltaic module.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 2 and fig. 5, a plurality of high temperature resistant flexible elastic members 110 are uniformly arranged on the bottom surface of the high temperature cloth. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. The high-temperature-resistant flexible elastic members 110 are arranged on the bottom surface of the high-temperature cloth, so that the heating area of the lower chamber 600 of the laminating machine can be effectively isolated from the glass 610, and when the laminating machine is not pressed, a certain gap can be formed between the heating area and the glass 610 due to the high-temperature-resistant flexible elastic members 110, and the isolation between the middle part of the glass 610 and the heating area is increased. The high-temperature-resistant flexible elastic pieces 110 can be arranged in a rectangular form or in other non-standard forms on the bottom surface of the high-temperature cloth, so that the high-temperature-resistant flexible elastic pieces are used as little as possible on the premise of isolation, the operation difficulty is reduced, and the cost is saved.

As a specific implementation manner of the embodiment of the present invention, the high temperature resistant flexible elastic member 110 is one of a silica gel material member or a rubber material member. Since the photovoltaic module is laminated in a high temperature environment, the high temperature resistant flexible elastic member 110 is needed, and can also achieve the function of increasing the gap between the glass 610 and the heating area of the lower chamber 600 of the laminating machine when the pressing is not performed, and the glass 610 is not affected by the pressure and the flattening when the laminating is performed. The silica gel material and the rubber material are generally high-temperature resistant, low in price and low in cost, and can be adopted in the scheme. The components can be in various forms such as spherical particles, cylinders, cuboids, polygonal columns and strips, and can play a role in properly lifting the height of the glass 610.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 5, the high temperature resistant flexible elastic member 110 is a silica gel particle, the silica gel particle is a spherical member, the diameter of the silica gel particle is 2-3mm, the distance between the silica gel particles is 3-5 mm, and the distance from the silica gel particle to the edge of the high temperature cloth is greater than 15 mm. The silica gel particles are a high-activity adsorption material and belong to amorphous substances. The silica gel is mainly composed of silicon dioxide, is stable in chemical property and non-combustible, and can lift the glass 610 when being not laminated due to good elasticity, and the pressing height is reduced when being pressed, so that the glass 610 can receive heat timely. In this embodiment, adopt spherical silica gel particle, can guarantee that each silica gel particle is unanimous to high temperature cloth and glass 610's lifting distance, avoid local some arch or recessed to cause glass 610 each point uneven problem of atress. The diameter size of the silica gel particles determines the size of the space between the upper glass 610 and the lower chamber 600 of the laminator, the distance between the silica gel particles and the edge size of the high temperature cloth determines the firmness of the outer edge of the high temperature cloth being adhered to the surface of the lower chamber 600 of the laminator, and the space between the silica gel particles determines the density of the silica gel particles and the lifting capacity of the glass 610 during the process of isolating the glass 610.

As a specific implementation manner of the embodiment of the present invention, the high temperature cloth and the high temperature resistant adhesive layer are teflon adhesive tapes 100. Directly adopt special fluorine dragon sticky tape 100 to replace high temperature cloth and high temperature resistant adhesive layer's whole in this embodiment, have convenient to use, be favorable to guaranteeing the clean and tidy advantage of operational environment. Teflon refers to polytetrafluoroethylene, having the english name Poly tetra fluoroethylene, abbreviated PTFE, commonly referred to as "non-stick coating" or "easy-to-clean material". The material has the characteristics of acid resistance, alkali resistance and various organic solvents resistance, and is almost insoluble in all solvents. Meanwhile, the polytetrafluoroethylene has the characteristics of high temperature resistance, adhesion resistance, wear resistance, acid and alkali resistance and the like. The teflon tape 100 is manufactured by weaving glass 610 fiber yarns, coating teflon resin on the woven glass 610 fiber yarns, spraying high-temperature-resistant silica gel on one side of the woven glass 610 fiber yarns, and performing special treatment to form the teflon tape with one smooth surface and one adhesive property. Has good corrosion resistance, high temperature resistance and insulativity, and can be repeatedly pasted for use. The Teflon adhesive tape 100 with a proper width can completely cover the middle of the glass 610 to avoid the problem of glue or wrinkles on the upper side caused by the tilting of the four corners of the glass 610, and avoid waste caused by selecting too wide a size. The teflon adhesive tape 100 with the silica gel particles is adhered to the central thermal deformation area of the lower chamber 600 of the laminating machine for contacting the middle part of the glass 610, so that firm and tight adhesion is ensured, and the influence on the use effect caused by the separation of the teflon adhesive tape is avoided.

As a specific implementation manner of the embodiment of the present invention, the photovoltaic module laminated structure further includes a varnished cloth 200 disposed above the teflon tape 100 and used for contacting with the glass 610, and the width of the varnished cloth 200 is not less than the width of the teflon tape 100. The varnished cloth 200 is the cloth of scribbling with lacquer or other coatings, has good heat-proof effect, in this embodiment, sets up the one deck in the top of teflon sticky tape 100 and plays varnished cloth 200, not only can improve the thermal-insulated effect of teflon sticky tape 100, can also play the isolation to between teflon sticky tape 100 and the glass 610 simultaneously, avoids the gluey bottom surface that pollutes top glass 610 in teflon sticky tape 100 edge. The varnished cloth 200 may be adhered by a high temperature resistant adhesive applied to the top of the teflon tape 100, or may be attached by other means such as sewing.

As a specific implementation manner of the embodiment of the present invention, the high temperature resistant flexible elastic member 110 is an elastic washer made of rubber. Adopt the elastic washer of rubber material in this embodiment, also can realize good elastic support ability, and the material is simple easily obtained, compares the silica gel granule and has the advantage of being more convenient for arrange.

As a specific implementation manner of the embodiment of the present invention, the varnished cloth 200 is provided with a plurality of layers arranged in order from bottom to top. The heat conduction to the middle of the glass 610 can be reduced by increasing the number of the arranged layers of the varnished cloth 200 according to the set heating temperature of the heating area of the lower chamber 600 of the laminator, and further the deformation of four corners of the glass 610 can be reduced.

As a specific implementation manner of the embodiment of the present invention, the width of the varnished cloth 200 is greater than that of the teflon tape 100, and the thickness of the varnished cloth 200 is 0.3-0.4 mm. The varnished cloth 200 is in a form that the width is slightly larger than that of the Teflon adhesive tape 100, so that a smoother contact surface is provided for the upper glass 610, the abrasion to the bottom surface of the glass 610 is reduced, and the surface quality of the glass 610 is improved conveniently.

The utility model also provides a photovoltaic module lamination equipment, photovoltaic module lamination equipment are equipped with photovoltaic module laminated structure. Set up photovoltaic module lamination structure on the laminator lower chamber 600 of current laminator, be convenient for reduce the rejection rate that photovoltaic module caused because of the deformation of 610 four corners of glass, the number of piles that can also correspond the adjustment varnished cloth 200 according to the temperature that the laminator set up simultaneously improves the production efficiency of laminator when guaranteeing the photovoltaic module quality.

The utility model provides a photovoltaic module lamination equipment, photovoltaic module laminated structure has been adopted, the high temperature cloth through setting up bottom surface bonding high temperature resistant flexible elastic component 110 at laminator lower chamber 600's upper surface realizes keeping apart glass 610 receives thermal part, avoid glass 610 center department to be heated and cause the problem of four corners department deformation, high temperature resistant flexible elastic component 110 has lifted the certain distance for high temperature cloth on vertical simultaneously, can avoid the effect of temperature to glass 610 four corners department, thermal transmission has still been improved when avoiding warping, and then the production efficiency of lamination has been improved.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A photovoltaic module laminate structure, comprising:

the high-temperature cloth is bonded on the lower chamber of the laminating machine along the length direction of the glass, a high-temperature-resistant adhesive layer is arranged on the bottom surface of the high-temperature cloth, and the width of the high-temperature cloth is smaller than that of the glass;

the high-temperature-resistant flexible elastic part is arranged between the high-temperature-resistant adhesive layer and the lower chamber of the laminating machine and is in bonding fit with the high-temperature-resistant adhesive layer, and the area of the horizontal projection of the high-temperature-resistant flexible elastic part is smaller than that of the high-temperature cloth.

2. The photovoltaic module laminate structure according to claim 1, wherein the high temperature resistant flexible elastic member is uniformly arranged in a plurality on the bottom surface of the high temperature cloth.

3. The photovoltaic module laminate structure of claim 1, wherein the high temperature resistant flexible elastic member is a silicone member or a rubber member.

4. The photovoltaic module laminate structure according to claim 3, wherein the high temperature-resistant flexible elastic member is a silicone particle, the silicone particle is a spherical member, the diameter of the silicone particle is 2-3mm, the distance between the silicone particles is 3-5 mm, and the distance from the silicone particle to the edge of the high temperature cloth is greater than 15 mm.

5. The photovoltaic module laminate structure of claim 3, wherein the high temperature resistant flexible elastomeric member is an elastomeric gasket of rubber material.

6. The photovoltaic module laminate structure of any of claims 1-5, wherein the high temperature cloth and the high temperature resistant adhesive layer are Teflon tape.

7. The photovoltaic module laminate structure of claim 6, further comprising a varnished cloth disposed over the Teflon tape for contacting engagement with the glass, wherein the varnished cloth has a width not less than a width of the Teflon tape.

8. The photovoltaic module laminate structure of claim 7, wherein the varnished cloth is provided with a plurality of layers arranged in sequence from bottom to top.

9. The photovoltaic module laminate structure of claim 7 or 8, wherein the width of the varnished cloth is greater than the width of the teflon tape, and the thickness of the varnished cloth is 0.3 to 0.4 mm.

10. A photovoltaic module laminating apparatus provided with the photovoltaic module laminating structure according to any one of claims 1 to 9.