CN217544632U - Solar cell module - Google Patents
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- CN217544632U CN217544632U CN202221039161.8U CN202221039161U CN217544632U CN 217544632 U CN217544632 U CN 217544632U CN 202221039161 U CN202221039161 U CN 202221039161U CN 217544632 U CN217544632 U CN 217544632U
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Abstract
The utility model provides a solar module, include: the first packaging layer and the second packaging layer are oppositely arranged; a solar cell array located in an intermediate region between the first and second encapsulant layers; the sealant layer, the sealant layer is located first encapsulated layer with peripheral region between the second encapsulated layer just encircles the solar array, the sealant layer includes first sealant layer and reflection of light sealant layer, the position of solar array with reflection of light sealant layer's position is equivalent. The solar cell module has strong sealing performance and reliability, and the power generation efficiency is improved.
Description
Technical Field
The utility model relates to a solar cell makes the field, concretely relates to solar module.
Background
In recent years, as the problem of traditional energy is more and more prominent, new energy is rapidly developed, and especially, solar energy is taken as one of the main developed energy sources, so that solar cells are developed. In the prior art, a solar cell module formed after solar cell packaging is used as a building unit of a power station, and the solar cell module is easy to be corroded by water vapor after being used in air for a long time, so that power attenuation of the solar cell and reliability reduction of the solar cell module can be caused. On the other hand, the solar cell module cannot fully utilize sunlight due to the fact that the solar cell absorbs the sunlight to a certain extent, and the power generation efficiency is reduced due to the fact that the sealing structure reduces the sunlight absorption of the solar cell.
In the current solar cell module, the performance of the packaging structure needs to be improved.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming the relatively poor and problem that the generating efficiency reduces of performance of solar module's packaging structure among the prior art.
In order to solve the technical problem, the utility model provides a solar module, include: the first packaging layer and the second packaging layer are oppositely arranged; a solar cell array located in an intermediate region between the first and second encapsulant layers; sealing glue layer, sealing glue layer is located first encapsulated layer with peripheral region between the second encapsulated layer just encircles the solar cell group, sealing glue layer includes first sealing glue layer and reflection of light sealing glue layer, the position of solar cell group with reflection of light sealing glue layer's position is equivalent.
Optionally, the partial surface of one side of the first sealant layer facing the solar cell array is far away from the solar cell array to form a containing cavity in a concave manner, and the reflective sealant layer is located in the containing cavity.
Optionally, the thickness of the light reflecting sealant layer is 20% to 50% of the thickness of the sealant layer.
Optionally, the thickness of the sealant layer is 0.5mm to 3.5mm.
Optionally, the thickness of the reflective sealant layer is 0.1mm to 1.8mm.
Optionally, the width of the light reflecting sealant layer is 20% to 50% of the width of the sealant layer.
Optionally, the width of the sealant layer is 2mm to 15mm.
Optionally, the width of the reflective sealant layer is 0.4mm to 7.5mm.
Optionally, the first sealant layer is a flexible sealant layer, and the flexible sealant layer includes a butyl rubber polymer; the light reflecting sealing adhesive layer is a flexible sealing adhesive layer, the flexible sealing adhesive layer comprises a butyl rubber polymer and a composition capable of providing light reflecting particle components, and the light reflecting particles comprise titanium dioxide, white argil powder or white carbon black or talcum powder or white calcium carbonate powder.
Optionally, the method further includes: the packaging adhesive layer is positioned between the first packaging layer and the second packaging layer and wraps the solar battery pack; the sealing adhesive layer is positioned on the outer side of the packaging adhesive layer.
Optionally, the encapsulation adhesive layer includes any one of an ethylene-vinyl acetate copolymer adhesive layer, a polyvinyl butyral adhesive layer, a polyethylene foam adhesive layer, a polyolefin elastomer adhesive layer, a polyurethane adhesive layer, a thermoplastic polyolefin elastomer adhesive layer, a thermoplastic polyurethane elastomer adhesive layer, or a polyamide adhesive layer.
Optionally, at least one of the first encapsulation layer and the second encapsulation layer is a light-transmitting layer.
Optionally, the light-transmitting layer faces one side of the light receiving surface of the solar cell set.
Optionally, the solar cell group includes a plurality of solar cell strings connected in parallel, and the solar cell strings include a plurality of solar cells connected in series; the adjacent solar cells are sequentially connected in series through the interconnection bars to form the solar cell string; and the solar battery pack is formed by connecting the adjacent solar battery strings in parallel through a bus bar.
The utility model discloses technical scheme has following advantage:
the utility model provides a solar battery assembly, the sealant layer encircles the solar battery pack, the sealant layer can obstruct dust and water vapor of external environment from passing through the adverse effect brought by the lateral wall of the solar battery pack to the solar battery pack, avoid the electrical property decline and the power attenuation problem of the solar battery pack caused by the water vapor of the solar battery pack, the sealant layer, the first packaging layer and the second packaging layer make the solar battery pack in a closed and insulated environment, so that the sealing performance of the solar battery assembly is improved; secondly, the sealing adhesive layer is positioned in the peripheral area between the first packaging layer and the second packaging layer, so that the sealing adhesive layer is not easy to fall off from the solar cell module under the action of external force; thirdly, first sealant layer can also effectively block the influence of steam to solar cell group when preventing the ultraviolet ray, reflection of light sealant layer is favorable to reflecting incident light extremely solar cell group improves solar cell group is to the absorptivity of incident light, improves solar cell group's generating efficiency, and then improves solar cell group's power. Therefore, the solar cell module has high sealing performance and reliability, and the power generation efficiency is improved.
Further, the first sealing adhesive layer is a flexible sealing adhesive layer; reflection of light sealant layer is flexible sealant layer, and mechanical damage that can the separation external environment etc. is right solar battery group brings's harmful effects plays the protection solar battery group's effect.
Furthermore, the encapsulation glue film is located the part first packaging layer and part between the second packaging layer, the encapsulation glue film still cladding the solar cell group, the solar cell group with encapsulation glue film between the sealing glue film can avoid the correlation to penetrate solar cell group incident light blocks, thereby improves solar cell group is to the absorptivity of incident light, and then improves solar cell group's power.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a cross section of a solar cell module in a direction perpendicular to a first encapsulating layer and a second encapsulating layer according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a cross section of a solar cell module in a direction parallel to a first encapsulating layer and a second encapsulating layer according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a solar cell string according to an embodiment of the present invention.
Description of reference numerals:
101-a first encapsulation layer; 102-a second encapsulation layer; 2-a solar cell set; 3-sealing the adhesive layer; 301-a first sealant layer; 302-reflecting sealant layer; 4-packaging the adhesive layer; w-width; t-thickness; 21-a semiconductor substrate layer; 22-a first conductivity type semiconductor layer; 23-a second conductivity type semiconductor layer; 24-a first transparent conductive layer; 25-a second transparent conductive layer; 26 — a first intrinsic semiconductor layer; 27-a second intrinsic semiconductor layer; 28-interconnecting strips.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
The utility model provides a solar module, combine to refer to fig. 1 and fig. 2, include:
a first encapsulation layer 101 and a second encapsulation layer 102 which are oppositely arranged;
a solar cell set 2, the solar cell set 2 being located in an intermediate region between the first encapsulant layer 101 and the second encapsulant layer 102;
In the solar cell module provided by this embodiment, the sealant layer 3 surrounds the solar cell module 2, the sealant layer 3 can block the adverse effects of sand, dust and water vapor in the external environment on the solar cell module 2 caused by the side wall of the solar cell module 2, and avoid the problems of electrical performance degradation and power attenuation of the solar cell module 2 caused by the water vapor in the solar cell module 2, and the sealant layer 3, the first packaging layer 101 and the second packaging layer 102 make the solar cell module 2 in a closed and insulated environment, so that the sealing performance of the solar cell module is improved; secondly, the sealant layer 3 is located in the peripheral area between the first encapsulant layer 101 and the second encapsulant layer 102, so that the sealant layer 3 is not easily peeled off from the solar cell module under the action of an external force; thirdly, the first sealant layer 301 can effectively block the influence of water vapor on the solar battery pack while preventing ultraviolet rays, the reflective sealant layer 302 is favorable for reflecting incident light to the solar battery pack 2 improves the absorption rate of the solar battery pack 2 to the incident light, so as to improve the power generation efficiency of the solar battery pack 2, and further improve the power of the solar battery pack 2. Therefore, the solar cell module has high sealing performance and reliability, and the power generation efficiency is improved.
In one embodiment, the thickness of the light reflecting sealant layer 302 is 20% -50%, such as 30%, of the thickness of the sealant layer 3; if the thickness of the light reflecting sealant layer 302 is less than 20% of the thickness of the sealant layer 3, if the thickness of the light reflecting sealant layer 302 is too small, the degree of reflecting light to the solar cell module by the light reflecting sealant layer is increased to be smaller, so that the degree of increasing the absorption of the solar cell module to incident light is increased to be smaller; if the thickness of the reflective sealant layer 302 is greater than 50% of the thickness of the sealant layer 3, the thickness of the first sealant layer 301 is too small, and the first sealant layer 301 prevents ultraviolet rays from damaging the sealant layer 3, which may result in the aging of the sealant layer 3.
The thickness T of the sealant layer 3 is perpendicular to the first and second encapsulant layers 101 and 102.
In one embodiment, the thickness T of the sealant layer 3 is 0.5mm to 3.5mm, for example 3mm; if the thickness of the sealant layer 3 is less than 0.5mm, the thickness of the sealant layer is too small, which may make it difficult to place the solar cell module 2 in a completely closed environment; if the thickness of the sealant layer 3 is greater than 3.5mm, the thickness of the sealant layer 3 is too large, which easily causes resource waste.
In one embodiment, the thickness of the light reflecting sealant layer 302 is 0.1mm to 1.8mm, such as 1.5mm.
In one embodiment, the width of the light reflecting sealant layer 302 is 20% -50%, such as 30%, of the width of the sealant layer 3; if the width of the light reflecting sealant layer 302 is less than 20% of the thickness of the sealant layer 3, the width of the light reflecting sealant layer 302 is too small, which increases the degree of the light reflecting sealant layer to the solar cell module to be less, resulting in a smaller degree of the absorption of the solar cell module to the incident light; if the width of the reflective sealant layer 302 is greater than 50% of the thickness of the sealant layer 3, the width of the first sealant layer 301 is too small, and the first sealant layer 301 prevents ultraviolet rays from damaging the sealant layer 3, which may result in the aging of the sealant layer 3.
The width W of the sealant layer 3 is parallel to the first and second encapsulant layers 101 and 102.
In one embodiment, the width W of the sealant layer 3 is 2mm-15mm, for example 10mm; if the width of the sealing adhesive layer 3 is smaller than 2mm, the width of the sealing adhesive layer 3 is too small, and the effect that the sealing adhesive layer prevents water vapor and dust in the environment from penetrating through the sealing adhesive layer to penetrate into the solar battery pack is weaker; if the width of the sealing adhesive layer 3 is larger than 15mm, the width of the sealing adhesive layer is too large, and resource waste is caused.
In one embodiment, the width of the light reflecting sealant layer 302 is 0.4mm to 7.5mm, such as 6.5mm.
In one embodiment, the first sealant layer 301 is a flexible sealant layer comprising a butyl based polymer. The butyl rubber polymer is composed of butyl rubber or halogenated butyl rubber, polyisobutylene or silane modified polyisobutylene succinic anhydride or silane modified olefin polymer, tackifying resin, super absorbent resin, reinforcing filler, tackifier, inert filler, antioxidant and ultraviolet absorbent. The first sealant layer 301 may be commercially available from the solar cell sealant market, such as cormelin butyl, model PVS101.
In one embodiment, the reflective sealant layer 302 is a flexible sealant layer, and the reflective sealant layer 302 further comprises a composition capable of providing a component of light reflective particles, compared to the first sealant layer 301, wherein the light reflective particles comprise titanium dioxide, kaolin or white carbon black or talc or white calcium carbonate powder. Of course, the material of the reflective sealant layer 302 can also include other materials that can block water, prevent aging, and have high reflectivity to light.
The first sealant layer 301 and the reflective sealant layer 302 can prevent the adverse effects on the solar cell array 2 caused by mechanical damage of the external environment and the like, and protect the solar cell array; moreover, the light-reflecting sealant layer 302 can further improve the utilization of light by the solar cell module, so that the power generation efficiency is improved.
In one embodiment, at least one of the first encapsulation layer 101 and the second encapsulation layer 102 is a light transmissive layer. The light transmitting layer faces one side of the light receiving surface of the solar battery pack.
When the solar battery pack is used for double-sided power generation, both the first packaging layer 101 and the second packaging layer 102 are light-transmitting layers, and when the solar battery pack is used for single-sided power generation, at least one of the first packaging layer 101 and the second packaging layer 102 is a light-transmitting layer located on one side facing the light-receiving surface of the solar battery pack 2.
In this embodiment, the second encapsulant layer 102 is suitable for being located on a side facing a light receiving surface of the solar cell module 2, the first encapsulant layer 101 is suitable for being located on a side facing a backlight surface of the solar cell module 2, and the first encapsulant layer 101 has a protection and support effect on the solar cell module 2; in other embodiments, the second encapsulant layer 102 is adapted to be located on a side facing a backlight surface of the solar cell set 2, the first encapsulant layer 101 is adapted to be located on a side facing a light receiving surface of the solar cell set 2, and the second encapsulant layer 102 has a protection and support effect on the solar cell set 2.
In this embodiment, the material of the second encapsulation layer 102 includes glass; in other embodiments, the material of the second encapsulation layer 102 may also include other materials that are transparent to light.
In one embodiment, the first encapsulation layer 101 is a single layer structure, and the material of the first encapsulation layer 101 includes glass. When the first encapsulant layer 101 has a single-layer structure, the first encapsulant layer 101 may be located on the light receiving surface side of the solar cell array 2, or may be located on the backlight surface side of the solar cell array 2.
In other embodiments, when the first encapsulation layer is located on a side facing a backlight surface of the solar cell set 2, the first encapsulation layer has a multilayer structure, the first encapsulation layer includes a protective layer, an insulating layer, and an adhesive layer that are stacked, the insulating layer is located between the adhesive layer and the protective layer, the adhesive layer is bonded to the first encapsulation layer, a material of the protective layer includes polyvinylidene fluoride, a material of the insulating layer includes polyethylene terephthalate, and a material of the adhesive layer includes polyolefin.
In one embodiment, with continued reference to fig. 1, the solar cell assembly further comprises: the packaging adhesive layer 4 is positioned in the peripheral area between the first packaging layer 101 and the second packaging layer 102, and wraps the solar cell array 2; the sealant layer 3 is located outside the encapsulation adhesive layer 4. Solar cell set 2 with encapsulation glue film between 3 can avoid incidenting solar cell set 2 incident light blocks thereby improving solar cell set 2 is to the absorptivity of incident light and then improve solar cell set's power.
In one embodiment, the bondline 4 comprises any one of an ethylene-vinyl acetate copolymer bondline, a polyvinyl butyral bondline, a polyethylene foam bondline, a polyolefin elastomer bondline, a polyurethane bondline, a thermoplastic polyolefin elastomer bondline, a thermoplastic polyurethane elastomer bondline, or a polyamide bondline; in other embodiments, the encapsulating adhesive layer 4 may also include other adhesive layers with adhesive property and optical transparency.
In one embodiment, the solar cell set 2 comprises a number of parallel-connected solar cell strings comprising a number of series-connected solar cells.
In one embodiment, the solar cell may be of various types, including but not limited to TOPCon (tunnel oxide passivated contact solar cell), PERC (emitter and back passivated solar cell), perovskite cell or HJT (heterojunction solar cell), and also a shingle, which is not limited herein.
In this embodiment, the solar cell is exemplified by a heterojunction solar cell structure, and referring to fig. 3, the heterojunction solar cell includes: a semiconductor substrate layer 21; a first conductivity type semiconductor layer 22 on one side of the semiconductor substrate layer 21; a second conductivity type semiconductor layer 23 located on the other side of the semiconductor substrate layer 21; a first transparent conductive layer 24 located on a side of the first conductivity-type semiconductor layer 22 facing away from the semiconductor substrate layer 21; a second transparent conductive layer 25 on a side of the second conductivity-type semiconductor layer 23 facing away from the semiconductor substrate layer 21; a first gate line electrode located on a side of the first transparent conductive layer 24 away from the semiconductor substrate layer 21; a second gate line electrode located on a side of the second transparent conductive layer 25 away from the semiconductor substrate layer 21; for any two adjacent heterojunction solar cells, one end of the interconnection bar 28 is connected to the first grid line electrode of one heterojunction solar cell, and the other end of the interconnection bar 28 is connected to the second grid line electrode of the other heterojunction solar cell.
The first transparent conductive layer 24 is a transparent conductive oxide film, such as an indium tin oxide semiconductor transparent conductive film or a zinc aluminum oxide semiconductor transparent conductive film; the first transparent conductive layer 24 is a transparent conductive oxide film, such as an indium tin oxide semiconductor transparent conductive film or a zinc aluminum oxide semiconductor transparent conductive film.
The second transparent conductive layer 25 is a transparent conductive oxide film, such as an indium tin oxide semiconductor transparent conductive film or a zinc aluminum oxide semiconductor transparent conductive film; the second transparent conductive layer 25 is a transparent conductive oxide film, such as an indium tin oxide semiconductor transparent conductive film or a zinc aluminum oxide semiconductor transparent conductive film.
The utility model provides a solar module, leakproofness and good reliability can make solar cell does not receive the steam to invade, makes solar module's life extension is more than 40 years. Environmentally sensitive outdoor power generating device, in particular for heterojunction solar cells
In one embodiment, the formation of the initial sealant layer can be performed by using a strip-shaped sealant; in another embodiment, the formation of the initial sealant layer may also adopt a method in which a heated and melted sealant is loaded into a gluing device, the gluing device is used to uniformly glue along a gap between a peripheral area of the first encapsulation layer and a peripheral area of the second encapsulation layer, the gluing device is a gluing device having functions of controlling and monitoring a flow rate by changing an air pressure, and the gluing device includes a pneumatic glue gun.
In one embodiment, the distance between the inner side wall of the initial sealant layer to the side wall of the solar cell set is 3mm to 5mm, for example 4mm.
In one embodiment, the distance between the inner side wall of the initial sealant layer and the side wall of the first encapsulation sealant layer is 1mm-3mm, for example 2mm.
In one embodiment, the distance between the inner side wall of the initial sealant layer and the side wall of the second sealant layer is 1mm to 3mm, for example 2mm.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (14)
1. A solar cell module, comprising:
the first packaging layer and the second packaging layer are oppositely arranged;
a solar cell array located in an intermediate region between the first and second encapsulant layers;
sealing glue layer, sealing glue layer is located first encapsulated layer with peripheral region between the second encapsulated layer just encircles the solar cell group, sealing glue layer includes first sealing glue layer and reflection of light sealing glue layer, the position of solar cell group with reflection of light sealing glue layer's position is equivalent.
2. The solar cell module as claimed in claim 1, wherein a portion of the surface of the first sealant layer facing the solar cell module is recessed away from the solar cell module to form a receiving cavity, and the light reflecting sealant layer is located in the receiving cavity.
3. The solar cell module as claimed in claim 1, wherein the thickness of the light reflecting sealant layer is 20-50% of the thickness of the sealant layer.
4. The solar cell module as claimed in claim 3, wherein the sealant layer has a thickness of 0.5mm to 3.5mm.
5. The solar cell module as claimed in claim 3, wherein the thickness of the light reflecting sealant layer is 0.1mm to 1.8mm.
6. The solar cell assembly of claim 1 wherein the width of the light reflecting encapsulant layer is 20-50% of the width of the encapsulant layer.
7. The solar cell module as claimed in claim 6, wherein the sealant layer has a width of 2mm to 15mm.
8. The solar cell module as claimed in claim 6, wherein the width of the light reflecting sealant layer is 0.4mm to 7.5mm.
9. The solar cell assembly of claim 1, wherein the first encapsulant layer is a flexible encapsulant layer comprising a butyl polymer;
the light reflecting sealing adhesive layer is a flexible sealing adhesive layer, the flexible sealing adhesive layer comprises a butyl rubber polymer and a composition capable of providing light reflecting particle components, and the light reflecting particles comprise titanium dioxide, white argil powder or white carbon black or talcum powder or white calcium carbonate powder.
10. The solar cell assembly according to any one of claims 1 to 9, further comprising:
the packaging adhesive layer is positioned between the first packaging layer and the second packaging layer and wraps the solar battery pack;
the sealing adhesive layer is positioned on the outer side of the packaging adhesive layer.
11. The solar cell assembly of claim 10, wherein the encapsulant layer comprises any one of an ethylene-vinyl acetate copolymer adhesive layer, a polyvinyl butyral adhesive layer, a polyethylene foam adhesive layer, a polyolefin elastomer adhesive layer, a polyurethane adhesive layer, a thermoplastic polyolefin elastomer adhesive layer, a thermoplastic polyurethane elastomer adhesive layer, or a polyamide adhesive layer.
12. The solar cell assembly of any of claims 1-9 wherein at least one of the first encapsulant layer and the second encapsulant layer is a light transmissive layer.
13. The solar cell module as claimed in claim 12, wherein the light transmitting layer faces a light receiving surface side of the solar cell module.
14. The solar cell assembly according to any one of claims 1-9, wherein the solar cell array comprises a plurality of parallel-connected solar cell strings, the solar cell strings comprising a plurality of series-connected solar cells; the adjacent solar cells are sequentially connected in series through the interconnection bars to form the solar cell string; and the solar battery pack is formed by connecting the adjacent solar battery strings in parallel through a bus bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221039161.8U CN217544632U (en) | 2022-04-28 | 2022-04-28 | Solar cell module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221039161.8U CN217544632U (en) | 2022-04-28 | 2022-04-28 | Solar cell module |
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| CN217544632U true CN217544632U (en) | 2022-10-04 |
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| CN202221039161.8U Active CN217544632U (en) | 2022-04-28 | 2022-04-28 | Solar cell module |
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| CN (1) | CN217544632U (en) |
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