CN212485345U - Laminated assembly and photovoltaic assembly - Google Patents
Laminated assembly and photovoltaic assembly Download PDFInfo
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- CN212485345U CN212485345U CN202021237071.0U CN202021237071U CN212485345U CN 212485345 U CN212485345 U CN 212485345U CN 202021237071 U CN202021237071 U CN 202021237071U CN 212485345 U CN212485345 U CN 212485345U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The application relates to the technical field of solar photovoltaic module manufacturing, in particular to a laminated module and a photovoltaic module. A laminated assembly for forming a photovoltaic assembly with a string of cells, the string of cells including a plurality of cells laminated along a length, at least partial lamination of adjacent cells forming a laminate, the laminated assembly comprising: the first adhesive film layers are arranged on two sides of the battery along the thickness direction of the battery string; wherein, the first glued membrane layer of at least one side is equipped with dodges the portion, dodges the portion and corresponds the setting with range upon range of portion.
Description
Technical Field
The application relates to the technical field of solar photovoltaic module manufacturing, in particular to a laminated module and a photovoltaic module.
Background
The photovoltaic module is formed by overlapping welding (lamination or stitch welding technology) of cells, the height of a cell lamination area is larger than that of an un-lamination area, the laminating machine is vacuumized and pressurized before an adhesive film does not reach the melting temperature, due to the height difference between the cell lamination area and the un-lamination area, the pressure during lamination firstly acts on the lamination area, the lamination area is easy to damage under the pressure, and even if the lamination area is extruded, the lamination area is prone to crack.
SUMMERY OF THE UTILITY MODEL
The application provides a range upon range of subassembly and photovoltaic module, reduces the hidden risk of splitting of battery appearance.
Embodiments of the present application provide a laminated assembly for forming a photovoltaic assembly with a string of cells, the string of cells including a plurality of cells laminated along a length, at least a partial lamination of adjacent cells forming a laminate, the laminated assembly comprising:
the first adhesive film layers are arranged on two sides of the battery along the thickness direction of the battery string;
the first adhesive film layer on at least one side is provided with an avoiding part, and the avoiding part and the laminating part are correspondingly arranged.
In a possible design, the first adhesive film layer is provided with a through hole penetrating along the thickness direction, and the through hole is the avoiding part.
In one possible design, the first adhesive film layer is provided with a groove, the groove is recessed in the thickness direction, a notch of the groove faces the laminating portion, and the groove is the avoiding portion.
In one possible design, in the cell string, the cells are stacked in a length direction, the first adhesive film layer includes a plurality of adhesive film strips, and the plurality of adhesive film strips are arranged in the length direction;
and along the length direction, a space is arranged between every two adjacent adhesive film strips, and the space is the avoiding part.
In one possible design, the dimension of the lamination portion in the length direction is 0.3mm to 0.7 mm.
In one possible design, the dimension of the avoiding part along the length direction is 0.3 mm-20 mm.
In one possible design, the second adhesive film layer is arranged on at least one side of the first adhesive film layer along the thickness direction of the battery string, and the second adhesive film layer is located on one side, far away from the battery, of the first adhesive film layer.
In one possible design, the thickness of the first adhesive film layer is greater than the thickness of the second adhesive film layer.
In a possible design, the first adhesive film layer and the second adhesive film layer are made of one or more of ethylene-vinyl acetate copolymer, polyethylene octene co-elastomer, polyvinyl butyral, and transparent silica gel.
The embodiment of the present application further provides a photovoltaic module, the photovoltaic module includes:
a battery string;
a laminated assembly, which is the laminated assembly described above;
the stacked assembly is capable of encapsulating the string of cells to form the photovoltaic assembly.
In the embodiment of the application, in the first adhesive film layers positioned on two sides of the battery string, the avoidance part corresponding to the laminated part is arranged on the first adhesive film layer on at least one side, when the first adhesive film layer is laminated with the battery string, the laminated part is avoided through the avoidance part, the problem of height difference between the laminated part and the part which is not laminated of the battery string is solved, extrusion of the laminated part of the battery string due to the height difference is reduced, and the possibility of hidden cracking of the laminated part is further reduced.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
FIG. 1 is a schematic view of a first embodiment of a laminate assembly provided herein;
FIG. 2 is a schematic view of a second embodiment of a laminate assembly provided herein;
FIG. 3 is a schematic view of a third embodiment of a laminate assembly provided herein;
FIG. 4 is a schematic view of a fourth embodiment of a laminate assembly provided herein;
FIG. 5 is a schematic view of a fifth embodiment of a laminate assembly provided herein;
FIG. 6 is a schematic view of a lamination stack according to a sixth embodiment of the present disclosure;
FIG. 7 is a schematic structural diagram of a first adhesive film layer;
FIG. 8 is an enlarged view of portion A of FIG. 7;
fig. 9 is a schematic structural view of a battery string;
fig. 10 is an enlarged view of a portion B in fig. 9.
Reference numerals:
1-a battery string;
11-a battery;
12-a lamination section;
2-a first glue film layer;
21-an escape portion;
3-a second glue film layer;
4-glass;
5-back plate.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Detailed Description
For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.
It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be noted that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.
As shown in fig. 9, in the embodiment of the present application, the longitudinal direction Y is the stacking direction of the cells 11, the width direction X is the direction perpendicular to the stacking direction of the cells 11 in the horizontal direction, and the thickness direction X is the direction perpendicular to the stacking direction of the cells 11 in the vertical direction, with the stacking direction of the cells 11 as a reference.
As shown in fig. 1 to 10, embodiments of the present application provide a photovoltaic module, i.e., a solar cell module, for collecting heat, generating electricity, and the like. In the photovoltaic module, a certain number of single cells 11 are connected in series and parallel. Specifically, the cell string 1 and the laminated assembly form a photovoltaic assembly using a lamination process. The battery string 1 comprises a plurality of batteries 11 which are stacked along the length direction Y, at least parts of adjacent batteries 11 are stacked along the thickness direction Z to form a stacked part 12, the stacked assembly comprises a first adhesive film layer 2, and the first adhesive film layer 2 is arranged on two sides of the batteries 11 along the thickness direction Z of the battery string 1; wherein, the first film layer 2 of at least one side is provided with the portion of dodging 21, dodges the portion of dodging 21 and laminates the portion of 12 and corresponds the setting.
The laminated assembly further comprises a glass 4 and a backsheet 5, the glass 4 and the backsheet 5 being located at the outermost layer of the laminated assembly. In the packaging process of the battery string 1, the front and back surfaces of the adjacent batteries 11 are welded in series to form the battery string 1 in series, at least part of the adjacent battery strings 1 after welding is laminated to form a laminated part 12, and the thickness of the laminated part 12 of the battery string 1 is higher than that of the part of the battery string 1 which is not laminated, so that the height difference is generated in the battery string 1. Then, the first adhesive film layer 2, the glass 4, the back plate 5 and other packaging materials are laminated with the battery string 1. And vacuumizing and pressurizing and heating the battery string 1 and the laminated assembly to melt the first adhesive film layer 2, and curing the melted first adhesive film layer 2 to form the photovoltaic assembly. Before the first adhesive film layer 2 is melted, the glass 4, the cover plate and the first adhesive film layer 2 on both sides are moved in the direction of the battery string 1 by vacuum pressure, and in the moving process, due to the height difference between the laminated part 12 and the non-laminated part, the pressure during lamination is firstly applied to the laminated part 12, so that the laminated part 12 is easily damaged by the pressure, and even if the laminated part 12 is squeezed, the laminated part 12 is hidden apart.
In order to solve the above-mentioned technical problem, in the embodiment of the present invention, at least one of the first adhesive film layers 2 located on both sides of the battery string 1 is provided with the relief portion 21 corresponding to the laminated portion 12, that is, the laminated portion 12 is provided in the projection area of the relief portion 21 in the thickness direction Z, when the first adhesive film layer 2 is laminated with the battery string 1, the relief portion 21 relieves the laminated portion 12, thereby solving the problem that the laminated portion 12 is easily damaged by pressure due to pressure acting on the laminated portion 12 first at the time of lamination, and reducing the possibility of hidden cracking of the laminated portion 12.
Specifically, in the first embodiment shown in fig. 1, the stacking order of the stacked assembly and the battery string 1 in the thickness direction Z may be: glass 4, first glued membrane layer 2, battery cluster 1, first glued membrane layer 2 and backplate 5. The first adhesive film layer 2 above the battery string 1 is provided with an avoiding portion 21, the avoiding portion 21 is arranged corresponding to the laminating portion 12 of the battery string 1, and the avoiding portion 21 avoids the height of the laminating portion 12 which is larger than the non-laminating portion, so that the pressure of the laminating portion 12 is weakened during laminating, and the risk that the laminating portion 12 is hidden and cracked due to extrusion of the first adhesive film layer 2 on the laminating portion 12 is reduced.
In another possible design, as in the second embodiment shown in fig. 2, the stacking order of the stacked assembly and the battery string 1 in the thickness direction Z may be: glass 4, first glued membrane layer 2, battery cluster 1, first glued membrane layer 2 and backplate 5. The first adhesive film layer 2 located below the battery string 1 is provided with an avoiding portion 21, the avoiding portion 21 is arranged corresponding to the laminating portion 12 of the battery string 1, the avoiding portion 21 avoids the height of the laminating portion 12 which is larger than the non-laminating portion, so that the pressure of the position of the laminating portion 12 is weakened during laminating, and the risk that the laminating portion 12 is hidden and cracked due to extrusion of the first adhesive film layer 2 on the laminating portion 12 is reduced.
In another possible design, as in the third embodiment shown in fig. 3, the stacking order of the stacked assembly and the battery string 1 in the thickness direction Z may be: glass 4, first glued membrane layer 2, battery cluster 1, first glued membrane layer 2 and backplate 5. The first adhesive film layers 2 on two sides of the battery string 1 are provided with the avoidance portions 21, the avoidance portions 21 are arranged corresponding to the lamination portions 12 of the battery string 1, and the avoidance portions 21 avoid the heights of the lamination portions 12 which are higher than the heights of the non-lamination portions, so that the pressure of the lamination portions 12 is weakened during lamination, and the risk that the lamination portions 12 are hidden and cracked due to extrusion of the first adhesive film layers 2 on the lamination portions 12 is reduced.
As shown in fig. 4 to 6, in one possible design, along the thickness direction Z of the battery string 1, at least one side of the first adhesive film layer 2 is provided with a second adhesive film layer 3, and the second adhesive film layer 3 is located on one side of the first adhesive film layer 2 away from the battery 11. In the embodiment of the application, in the both sides of keeping away from battery cluster 1 of first glued membrane layer 2, at least one side is provided with second glued membrane layer 3, through the stack of second glued membrane layer 3 with first glued membrane layer 2, increases the thickness of glued membrane layer, plays the cushioning effect to glass 4 or apron extrusion battery cluster 1's laminating portion 12, reduces the hidden risk of splitting of battery cluster 1.
Specifically, in the fourth embodiment shown in fig. 4, the stacking order of the stacked assembly and the battery string 1 in the thickness direction Z may be: glass 4, second glued membrane layer 3, first glued membrane layer 2, battery cluster 1, first glued membrane layer 2 and apron. Wherein, the first film layer 2 that is close to the second film layer 3 is equipped with dodges portion 21, dodges portion 21 and corresponds the setting with the laminating portion 12 of battery cluster 1, through second film layer 3, increases the glued membrane thickness that has the first film layer 2 side of dodging portion 21 to can flow to laminating portion 12 after making the glued membrane of this side melt, with encapsulation battery cluster 1.
In another possible design, as in the fifth embodiment shown in fig. 5, the stacking order of the stacked assembly and the cell string 1 in the thickness direction Z may be: glass 4, first glued membrane layer 2, battery cluster 1, first glued membrane layer 2, second glued membrane layer 3 and apron. Wherein, the first film layer 2 that is close to the second film layer 3 is equipped with dodges portion 21, dodges portion 21 and corresponds the setting with the laminating portion 12 of battery cluster 1, through second film layer 3, increases the glued membrane thickness that has the first film layer 2 side of dodging portion 21 to can flow to laminating portion 12 after making the glued membrane of this side melt, with encapsulation battery cluster 1.
In another possible design, as in the sixth embodiment shown in fig. 6, the stacking order of the stacked assembly and the cell string 1 in the thickness direction Z may be: glass 4, second glued membrane layer 3, first glued membrane layer 2, battery cluster 1, first glued membrane layer 2, second glued membrane layer 3 and apron. Wherein, the first glued membrane layer 2 of battery cluster 1 both sides all is equipped with dodges portion 21, dodges portion 21 and corresponds the setting with the laminating portion 12 of battery cluster 1, through second glued membrane layer 3, increases the glued membrane thickness of the first glued membrane layer 2 side of both sides to can flow to laminating portion 12 after the glued membrane melting of messenger both sides, with encapsulation battery cluster 1.
As shown in fig. 7 and 8, in one possible design, the first adhesive film layer 2 is provided with a through hole penetrating in the thickness direction Z, the through hole being the relief portion 21. In the embodiment of the present application, the first adhesive film layer 2 may be cut to be a hollow (i.e., through hole) shape, so as to form the stacked portion 12 when the first adhesive film layer 2 and the battery string 1 are stacked, so as to solve the height difference problem of the battery string 1.
Or, the first adhesive film layer 2 is provided with a groove, the groove is recessed in the thickness direction Z, a notch of the groove faces the laminating portion 12, and the groove is an avoiding portion 21. In this embodiment, can cut out the recess with first glued membrane layer 2, dodge stack portion 12 through the recess to solve the difference in height problem of battery cluster 1.
Or in the cell string 1, the cells 11 are stacked along the length direction Y, the first adhesive film layer 2 includes a plurality of adhesive film strips, and the plurality of adhesive film strips are arranged along the length direction Y; along length direction Y, be equipped with the interval between the adjacent glued membrane strip, the interval is dodge portion 21. In this application embodiment, can cut into many glued membrane strips with first glued membrane layer 2, when many glued membrane strips range upon range of with battery cluster 1, adjacent glued membrane strip avoids the setting of laminating portion 12, even the laminating portion 12 is located the interval department between the adjacent glued membrane strip to solve battery cluster 1's difference in height problem.
In one possible design, the dimension of the lamination portion 12 in the length direction Y is 0.3mm to 0.7 mm. The size of the laminated portion 12 may be 0.3mm, 0.5mm, 0.7mm, or the like.
Specifically, when the size of the laminated portion 12 is too small (for example, less than 0.3mm), the welding strength of the laminated portion 12 of the battery string 1 is made low, and the respective batteries 11 of the battery string 1 are easily detached; when the size of the laminated part 12 is too large (for example, greater than 0.7mm), the laminated part 12 of each battery 11 is large, that is, the height difference between the laminated part 12 and the non-laminated part of the battery string 1 increases, and further the risk of the laminated part 12 of the battery string 1 cracking is increased, and if the risk of the laminated part 12 cracking is reduced, the thickness of the first adhesive film layer 2 needs to be increased, which increases the cost.
Therefore, when the size of the laminated part 12 is 0.3mm to 0.7mm, it is possible to secure the welding strength of the adjacent batteries 11 while reducing the risk of the laminated part 12 of the battery string 1 from being hidden apart and reducing the cost of the first adhesive film.
In one possible design, the dimension of the relief 21 in the longitudinal direction Y is 0.3mm to 20 mm.
Specifically, when the size of the escape portion 21 is too small (less than 0.3mm), the escape of the laminated portion 12 cannot be completely satisfied, and when the battery string 1 is packaged, the first adhesive film layer 2 may press the laminated portion 12 that is not escaped, increasing the risk of hidden cracking of the laminated portion 12; when the size of the avoiding part 21 is too large (larger than 20mm), the first adhesive film layer 2 cannot completely encapsulate the battery string 1 after being melted, and other adhesive film layers are required to be added, which increases the cost.
Therefore, when the size of the relief portion 21 is 0.3mm to 20mm, the relief portion 21 can be satisfied for the laminated portion 12, the risk of the laminated portion 12 being hidden crack is reduced, and the cost is reduced.
In one possible design, the thickness of the first adhesive film layer 2 may be greater than the thickness of the second adhesive film layer 3, so that the escape portion 21 of the first adhesive film layer 2 can avoid the stacked portion 12 of the battery string 1 in the thickness direction Z, to reduce the risk that the second adhesive film layer 3 presses the stacked portion 12.
In a possible design, the first adhesive film layer 2 and the second adhesive film layer 3 are made of one or more of ethylene-vinyl acetate copolymer (POE), polyethylene octene co-Elastomer (EVA), polyvinyl butyral (PVB), and transparent silica gel. The first adhesive film layer 2 and the first adhesive film layer 2 can also be made of other materials, and the adhesive film can meet the requirements of high transparency, high adhesion, good durability, high temperature resistance, moisture resistance, ultraviolet lamps resistance, easy storage and the like.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A laminated assembly for composing a photovoltaic assembly with a string of cells (1), said string of cells (1) comprising a plurality of cells (11) laminated along a length direction (Y), at least a partial lamination of adjacent cells (11) forming a laminate (12), characterized in that said laminated assembly comprises:
the first adhesive film layer (2) is arranged on two sides of the battery (11) along the thickness direction (Z) of the battery string (1);
the first adhesive film layer (2) on at least one side is provided with an avoiding part (21), and the avoiding part (21) corresponds to the laminating part (12).
2. The laminate assembly according to claim 1, wherein the first adhesive film layer (2) is provided with a through hole penetrating in a thickness direction (Z), the through hole being the relief portion (21).
3. The laminate assembly according to claim 1, wherein the first adhesive film layer (2) is provided with a groove which is recessed in a thickness direction (Z) with a notch thereof facing the laminate portion (12), the groove being the relief portion (21).
4. The stack assembly according to claim 1, wherein in the cell string (1), the cells (11) are stacked along a length direction (Y), and the first adhesive film layer (2) comprises a plurality of adhesive film strips arranged along the length direction (Y);
and along the length direction (Y), a space is arranged between every two adjacent adhesive film strips, and the space is the avoiding part (21).
5. The laminate assembly of claim 1, wherein the laminate portion (12) has a dimension in the length direction (Y) of 0.3mm to 0.7 mm.
6. The laminate assembly of claim 1, wherein the relief (21) has a dimension in the longitudinal direction (Y) of 0.3mm to 20 mm.
7. The laminate assembly according to any one of claims 1 to 6, wherein at least one side of the first adhesive film layer (2) is provided with a second adhesive film layer (3) in the thickness direction (Z) of the battery string (1), the second adhesive film layer (3) being located on the side of the first adhesive film layer (2) remote from the battery (11).
8. The laminate assembly of claim 7, wherein the thickness of the first adhesive film layer (2) is greater than the thickness of the second adhesive film layer (3).
9. The laminate assembly of claim 7, wherein the first and second adhesive film layers (2, 3) comprise one of ethylene vinyl acetate, polyethylene octene co-elastomer, polyvinyl butyral, clear silicone.
10. A photovoltaic module, comprising:
a battery string (1);
a laminated assembly as claimed in any one of claims 1 to 9;
the laminated assembly is capable of encapsulating the string of cells (1) to form the photovoltaic assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021237071.0U CN212485345U (en) | 2020-06-29 | 2020-06-29 | Laminated assembly and photovoltaic assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021237071.0U CN212485345U (en) | 2020-06-29 | 2020-06-29 | Laminated assembly and photovoltaic assembly |
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| Publication Number | Publication Date |
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| CN212485345U true CN212485345U (en) | 2021-02-05 |
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| CN202021237071.0U Active CN212485345U (en) | 2020-06-29 | 2020-06-29 | Laminated assembly and photovoltaic assembly |
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Assignee: Jingke Energy Co.,Ltd. Assignor: Jingke green energy (Shanghai) Management Co.,Ltd. Contract record no.: X2021980002915 Denomination of utility model: The invention relates to a laminated module and a photovoltaic module Granted publication date: 20210205 License type: Common License Record date: 20210422 |