CN112670417A - Packaging structure and packaging method of series perovskite battery assembly - Google Patents
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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
- Y02E10/549—Organic PV cells
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Abstract
The invention discloses a packaging structure and a packaging method of a series perovskite battery component, wherein the packaging structure of the series perovskite battery component comprises a substrate, a backlight plate, a packaging part and a plurality of perovskite solar components, the backlight plate is arranged above the substrate in parallel, one end of the packaging part is connected with the outer periphery of the substrate, the other end of the packaging part is connected with the outer periphery of the backlight plate, a sealing cavity is formed among the packaging part, the substrate and the backlight plate, the perovskite solar components are uniformly distributed in the sealing cavity, and the perovskite solar components are sequentially connected in series. The packaging structure and the packaging method of the series perovskite battery component have the advantages that the metal layer is separated from direct contact of perovskite, the stability of the perovskite component is improved, flexible design of series-parallel circuits of all modules is achieved, packaging under an inert gas environment is achieved, the traditional photovoltaic component is overturned to be packaged by using POE, EVA and other materials, materials are saved, and process steps are simplified.
Description
Technical Field
The invention belongs to the technical field of solar cells, and particularly relates to a packaging structure and a packaging method of a series perovskite cell module.
Background
Perovskite solar cells have attracted high academic attention due to the characteristics of high photoelectric conversion efficiency, low-cost solution processing, abundant resources and the like, and the current worldwide record of efficiency is 25.5%. And the silicon crystal cell, the CdTe cell and the Copper Indium Gallium Selenide (CIGS) cell are positioned at the same level. Due to the great scientific significance and great development prospect, the perovskite battery is evaluated as one of ten scientific breakthroughs in 2013 by the Science journal.
The major issues currently affecting the commercialization of perovskite solar cells are their encapsulation and process stability. Perovskite materials with different components undergo phase change under high-temperature conditions, which determines that the perovskite component needs low-temperature packaging, and the perovskite component packaging is not used in the existing photovoltaic packaging mode.
Meanwhile, the traditional metal layer is in contact with the perovskite light absorption layer, so that metal ions enter the perovskite material to react, the property of the perovskite material is changed, and the stability of the perovskite material is reduced.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
Therefore, the invention provides a packaging structure of a series perovskite battery pack, which has the advantages of compact overall structure, flexible design of series-parallel circuits of each module, full utilization of solar energy for power generation and the like.
The invention also provides a packaging method of the packaging structure of the series perovskite battery component, the steps of the packaging method are simple and easy to implement, the packaging process does not need POE, EVA and other packaging filling adhesive films, low-temperature packaging is realized, and therefore the production efficiency of the packaging structure of the series perovskite battery component can be improved.
The packaging structure of a tandem-type perovskite battery module according to an embodiment of the first aspect of the invention includes: a substrate; the backlight plate is arranged above the substrate in parallel; one end of the packaging part is connected with the outer periphery of the substrate, the other end of the packaging part is connected with the outer periphery of the backlight plate, and a sealing cavity is formed among the packaging part, the substrate and the backlight plate; a plurality of perovskite solar modules uniformly distributed in the sealed cavity, the plurality of perovskite solar modules being connected in series in sequence; two sides of the substrate are respectively provided with a metal electrode leading-out end, the upper end of the substrate is provided with a plurality of conducting layers corresponding to the perovskite solar components, the conducting layers are arranged at intervals, two conducting layers at the edge are respectively connected with the two metal electrode leading-out ends, and the perovskite solar components are arranged on the upper parts of the conducting layers; the solar energy backlight module is characterized in that a plurality of metal layers corresponding to the perovskite solar modules are arranged on the lower portion of the backlight plate, the metal layers are connected with the perovskite solar modules, a plurality of conductive paste is further arranged on the lower portion of the backlight plate and located between every two adjacent perovskite solar modules, the upper ends of the conductive paste are connected with the metal layer on one side of the conductive paste, and the lower ends of the conductive paste are connected with the conductive layer on the other side of the conductive paste.
According to the packaging structure of the tandem type perovskite cell module, the substrate, the backlight plate, the packaging part and the perovskite solar modules are combined, and the perovskite solar modules are sequentially connected in series, so that solar power generation is realized. The packaging structure of the series perovskite battery component is compact in overall structure, and a series-parallel circuit of each module is flexibly designed.
According to one embodiment of the invention, the perovskite solar module comprises: the hole layer, the perovskite light absorption layer and the electron layer are connected in sequence; the hole layer is connected with the conducting layer, and the electron layer is connected with the metal layer; or the electron layer is connected with the conducting layer, and the hole layer is connected with the metal layer.
According to an embodiment of the present invention, the distance between the substrate and the backlight plate is less than 100 nm.
According to one embodiment of the invention, the encapsulation part is a glass plate, the upper edge of the glass plate is flush with the upper edge of the backlight plate, and the lower edge of the glass plate is flush with the lower edge of the substrate.
According to one embodiment of the invention, a curing type sealant is arranged between the metal electrode leading-out end and the packaging part.
According to one embodiment of the invention, the conductive layer is a TCO conductive layer.
According to one embodiment of the invention, the backlight plate and the substrate are both float glass, and the thickness of the float glass is 0.5mm-5 mm.
The packaging method of the packaging structure of the tandem-type perovskite battery module according to the embodiment of the second aspect of the invention comprises the following steps: s1, adding metal electrode leading-out ends on two sides of the substrate; s2, depositing a plurality of conducting layers on the substrate, and enabling parts of the two conducting layers at the edges to be in contact with the metal electrode leading-out ends; s3, depositing a plurality of perovskite solar components on the conducting layer; s4, depositing a plurality of metal layers on the backlight plate, and printing conductive paste on one side of each metal layer to enable one end of one conductive paste to be correspondingly connected with one metal layer; s5, after the backlight plate is turned over, the backlight plate is placed on the perovskite solar component obtained in the step S3, the lower side of a metal layer corresponds to the perovskite solar component, the backlight plate, the perovskite solar component and the substrate are pressed, the other end of conductive slurry is correspondingly connected with the other conductive layer beside, and the whole pressing process is carried out in an inert gas environment; and S6, welding the packaging part on the outer peripheries of the substrate and the backlight plate in a laser welding mode.
According to an embodiment of the present invention, the S1 specifically is: and etching one side of the substrate, and forming a metal electrode leading-out end at the etching position in a deposition or screen printing or sputtering mode.
According to an embodiment of the present invention, the S3 specifically is: depositing an electron layer, a perovskite light absorption layer and a hole layer from bottom to top in sequence; or depositing a cavity layer, a perovskite light absorption layer and an electron layer from bottom to top in sequence.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of an encapsulation structure of a tandem-type perovskite battery module according to an embodiment of the present invention;
fig. 2 is a flowchart of a packaging method of a packaging structure of a tandem-type perovskite battery module according to an embodiment of the present invention.
Reference numerals:
a packaging structure 100 of a tandem-type perovskite battery module;
a substrate 10; a metal electrode terminal 11; a conductive layer 12;
a backlight plate 20; a metal layer 21; the conductive paste 22;
a sealing portion 30; a perovskite solar module 40;
a hole layer 41; a perovskite light absorbing layer 42; an electron shell 43.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships 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 referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The following specifically describes a packaging structure of a tandem-type perovskite battery module and a packaging method thereof according to an embodiment of the present invention with reference to the accompanying drawings.
As shown in fig. 1, a package structure 100 of a tandem-type perovskite battery module according to an embodiment of the present invention, the package structure 100 of a tandem-type perovskite battery module according to an embodiment of the present invention, includes: a substrate 10, a backlight panel 20, an encapsulation section 30 and a plurality of perovskite solar modules 40.
Specifically, the backlight plate 20 is arranged above the substrate 10 in parallel, one end of the packaging part 30 is connected with the outer periphery of the substrate 10, the other end of the packaging part 30 is connected with the outer periphery of the backlight plate 20, a sealed cavity is formed among the packaging part 30, the substrate 10 and the backlight plate 20, the perovskite solar modules 40 are uniformly distributed in the sealed cavity, the perovskite solar modules 40 are sequentially connected in series, two sides of the substrate 10 are respectively provided with a metal electrode leading-out end 11, the upper end of the substrate 10 is provided with a plurality of conducting layers 12 corresponding to the perovskite solar modules 40, the conducting layers 12 are arranged at intervals, two conducting layers 12 at the edge are respectively connected with the two metal electrode leading-out ends 11, the perovskite solar modules 40 are arranged at the upper part of the conducting layers 12, the lower part of the backlight plate 20 is provided with a plurality of metal layers 21 corresponding to the perovskite solar modules 40, the metal layers 21 are connected with the perovskite solar modules 40, the lower part of the backlight plate 20 is also provided with a plurality of conductive pastes 22, the conductive pastes 22 are positioned between two adjacent perovskite solar modules 40, the upper ends of the conductive pastes 22 are connected with the metal layer 21 on one side of the conductive paste 22, and the lower ends of the conductive pastes 22 are connected with the conductive layer 12 on the other side of the conductive paste 22.
In other words, the packaging structure 100 of the tandem-type perovskite battery module mainly comprises a substrate 10, a backlight panel 20, a packaging part 30 and a plurality of perovskite solar modules 40, wherein metal electrode leading-out terminals 11 are arranged on both sides of the substrate 10, a plurality of conducting layers 12 distributed at intervals are further arranged on the upper part of the substrate 11, and the conducting layers 12 arranged on the edges of the substrate 11 are respectively connected with the two metal electrode leading-out terminals 11 to realize circuit communication. Then, the perovskite solar module 40 is provided on each of the plurality of conductive layers 12. Next, a plurality of metal layers 21 are disposed on the lower portion of the backlight panel 20, each metal layer 21 corresponding to each perovskite solar module 40, one end of each metal layer 21 is provided with a conductive paste 22, and the conductive paste 22 extends downward until it abuts against the conductive layer 12. It should be noted that the metal layer 21 of the previous module is in contact with the conductive layer 12 of the next module through the conductive paste 22 on one side thereof, so that the circuit connection can be realized. Finally, a plurality of perovskite solar modules 40 are encapsulated between the substrate 10 and the backlight panel 20 using the encapsulation section 30.
Thus, according to the tandem-type perovskite cell module package structure 100 of the embodiment of the present invention, the substrate 10, the backlight 20, the package portion 30, and the plurality of perovskite solar modules 40 are combined, and the plurality of perovskite solar modules 40 are sequentially connected in series, thereby realizing power generation. The packaging structure of the series perovskite battery component is compact in overall structure, and a series-parallel circuit of each module is flexibly designed.
According to one embodiment of the invention, the perovskite solar module 40 comprises: a hole layer 41, a perovskite light absorption layer 42 and an electron layer 43 which are connected in sequence; the hole layer 41 is connected with the conductive layer 12, and the electron layer 43 is connected with the metal layer 21; alternatively, electron layer 43 is connected to conductive layer 12 and hole layer 41 is connected to metal layer 21. That is, when the upper side of the perovskite light absorption layer 42 in the perovskite solar module 20 is the hole layer 41, the lower side of the perovskite light absorption layer 42 is the electron layer 43; when the upper side of the perovskite light absorption layer 42 is the electron layer 43, the lower side of the perovskite light absorption layer 42 is the hole layer 41.
In some embodiments of the present invention, the distance between the substrate 10 and the backlight plate 20 is less than 100 nm. In order to ensure compactness of the entire structure and convenience of industrial application, the distance between the substrate 10 and the backlight plate 20 is set to be less than 100nm, so that the electron transmission distance can be shortened, and the good power generation effect of the perovskite solar module 40 can be further ensured.
Optionally, the sealing portion 30 is a glass plate, an upper edge of the glass plate is flush with an upper edge of the backlight panel 20, and a lower edge of the glass plate is flush with a lower edge of the substrate 10. Through using the glass board as encapsulation portion 30, can avoid using materials such as POE, EVA to encapsulate in traditional photovoltaic module, when save material, can also simplify the process steps.
In some embodiments of the present invention, a curing type sealant is disposed between the metal electrode terminal 11 and the sealing portion 30. Preferably, the thickness of the curable sealant is 100nm to 2 mm. The metal electrode leading-out end 11 has a width of 0.01mm-100mm, a length of 0.1mm-2000mm and a thickness of 0.01mm-3 mm.
Preferably, the conductive layer 12 is a TCO conductive layer. The TCO conductive layer has low surface sheet resistance, high light transmittance, large area, light weight, easy processing and impact resistance, thereby ensuring good power generation effect of the perovskite solar module 40.
Preferably, the backlight panel 20 and the substrate 10 are both float glass having a thickness of 0.5mm to 5 mm. The float glass is pure, has good transparency, is bright and colorless, has no impurities such as glass and bubbles, and can ensure that the perovskite solar module 40 can fully receive solar energy and generate electricity by utilizing the solar energy.
As shown in fig. 2, the packaging method of the packaging structure 100 of the tandem-type perovskite battery module according to the embodiment of the present invention includes the steps of: s1, adding metal electrode terminals 11 on both sides of the substrate 10; s2, depositing a plurality of conductive layers 12 on the substrate 10, and contacting a part of the two conductive layers 12 at the edge with the metal electrode terminals 11; s3, depositing a plurality of perovskite solar modules 40 on the conducting layer 12; s4, depositing a plurality of metal layers 21 on the backlight plate 20, and printing conductive paste 22 on one side of each metal layer 21, so that one end of one conductive paste 22 is correspondingly connected to one metal layer 21; s5, after the backlight plate 20 is turned over, the backlight plate 20 is placed on the perovskite solar module 40 obtained in the step S3, such that one perovskite solar module 40 corresponds to the lower portion of one metal layer 21, and the backlight plate 20, the perovskite solar module 40 and the substrate 10 are pressed together, such that the other end of one conductive paste 22 corresponds to the other conductive layer 12 beside, and the whole pressing process is performed in an inert gas environment; s6, the sealing portion 30 is welded to the outer peripheries of the substrate 10 and the backlight panel 20 by laser welding.
That is, in the process of manufacturing the package structure 100 of the tandem type perovskite battery module, the metal electrode terminals 11 are added on both sides of the substrate 10, and then the plurality of conductive layers 12 are deposited on the substrate 10, and the conductive layers 12 are uniformly spaced on the substrate 10. A perovskite solar module 40 is then deposited on each conductive layer 12. Next, a plurality of metal layers 21 need to be deposited on one side of the backlight panel 20, and it should be noted that each metal layer 21 corresponds to the position of the perovskite solar module 40. One end of each metal layer 21 is provided with a conductive paste 22, and the conductive paste 22 is extended toward the conductive layer 12 until the bottom end of the conductive paste 22 can reach the conductive layer 12. Next, the perovskite solar module 40 is disposed under one metal layer 21, and the backlight plate 20, the perovskite solar module 40 and the substrate 10 are pressed together, so that the other end of one conductive paste 22 is connected to the other conductive layer 12, and the whole pressing process is performed in an inert gas environment. Finally, the sealing portion 30 is welded to the outer peripheries of the substrate 10 and the backlight plate 20 by laser welding. The whole packaging process is carried out in a low-temperature state.
According to an embodiment of the present invention, S1 is specifically: one side of the substrate 10 is etched, and a metal electrode terminal 11 is formed at the etched portion by deposition or screen printing or sputtering.
In some embodiments of the present invention, S3 is specifically: depositing an electron layer 43, a perovskite light absorption layer 42 and a hole layer 41 from bottom to top in sequence; or the hole layer 41, the perovskite light absorption layer 42 and the electron layer 43 are deposited in sequence from bottom to top.
In summary, according to the packaging structure 100 of the tandem-type perovskite battery module and the packaging method thereof in the embodiment of the invention, the substrate 10, the backlight plate 20, the packaging part 30 and the perovskite solar module 40 are combined, the perovskite solar module 40 is packaged between the substrate 10 and the backlight plate 20 by using the glass plate as the packaging part 30, the packaging process steps are simple, and the situation that POE, EVA and other materials are used as packaging materials in the conventional photovoltaic module can be overturned, so that materials can be saved, and unnecessary waste can be avoided. Further, the conductive layer 12 provided between the substrate 10 and the perovskite solar module 40 prevents direct contact between the metal and the perovskite solar module 40, and thus can effectively improve the stability of the perovskite solar module 40. The whole packaging process is carried out in an inert gas environment, so that good air isolation can be achieved, the perovskite solar module 40 is prevented from being oxidized and corroded, and the service life is further prolonged.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A packaging structure for a tandem perovskite battery module, comprising:
a substrate;
the backlight plate is arranged above the substrate in parallel;
one end of the packaging part is connected with the outer periphery of the substrate, the other end of the packaging part is connected with the outer periphery of the backlight plate, and a sealing cavity is formed among the packaging part, the substrate and the backlight plate;
a plurality of perovskite solar modules uniformly distributed in the sealed cavity, the plurality of perovskite solar modules being connected in series in sequence;
two sides of the substrate are respectively provided with a metal electrode leading-out end, the upper end of the substrate is provided with a plurality of conducting layers corresponding to the perovskite solar components, the conducting layers are arranged at intervals, two conducting layers at the edge are respectively connected with the two metal electrode leading-out ends, and the perovskite solar components are arranged on the upper parts of the conducting layers;
the solar energy backlight module is characterized in that a plurality of metal layers corresponding to the perovskite solar modules are arranged on the lower portion of the backlight plate, the metal layers are connected with the perovskite solar modules, a plurality of conductive paste is further arranged on the lower portion of the backlight plate and located between every two adjacent perovskite solar modules, the upper ends of the conductive paste are connected with the metal layer on one side of the conductive paste, and the lower ends of the conductive paste are connected with the conductive layer on the other side of the conductive paste.
2. The packaging structure of a tandem-type perovskite cell module as claimed in claim 1, wherein the perovskite solar module comprises:
the hole layer, the perovskite light absorption layer and the electron layer are connected in sequence;
the hole layer is connected with the conducting layer, and the electron layer is connected with the metal layer;
or the electron layer is connected with the conducting layer, and the hole layer is connected with the metal layer.
3. The packaging structure of a tandem perovskite battery module as claimed in claim 1, wherein the distance between the substrate and the backlight plate is less than 100 nm.
4. The packaging structure of a tandem perovskite battery module as claimed in claim 1, wherein the packaging part is a glass plate, the upper edge of the glass plate is flush with the upper edge of the backlight plate, and the lower edge of the glass plate is flush with the lower edge of the substrate.
5. The packaging structure of a tandem perovskite battery module as claimed in claim 1, wherein a curing type sealant is provided between the metal electrode lead and the packaging part.
6. The packaging structure of a tandem perovskite cell assembly as claimed in claim 1, wherein the conductive layer is a TCO conductive layer.
7. The packaging structure of a tandem perovskite battery module as claimed in claim 1, wherein the backlight plate and the substrate are both float glass, and the thickness of the float glass is 0.5mm to 5 mm.
8. The method for packaging a packaging structure for a tandem-type perovskite battery module as claimed in any one of claims 1 to 7, characterized by comprising the steps of:
s1, adding metal electrode leading-out ends on two sides of the substrate;
s2, depositing a plurality of conducting layers on the substrate, and enabling parts of the two conducting layers at the edges to be in contact with the metal electrode leading-out ends;
s3, depositing a plurality of perovskite solar components on the conducting layer;
s4, depositing a plurality of metal layers on the backlight plate, and printing conductive paste on one side of each metal layer to enable one end of one conductive paste to be correspondingly connected with one metal layer;
s5, after the backlight plate is turned over, the backlight plate is placed on the perovskite solar component obtained in the step S3, the lower side of a metal layer corresponds to the perovskite solar component, the backlight plate, the perovskite solar component and the substrate are pressed, the other end of conductive slurry is correspondingly connected with the other conductive layer beside, and the whole pressing process is carried out in an inert gas environment;
and S6, welding the packaging part on the outer peripheries of the substrate and the backlight plate in a laser welding mode.
9. The method for packaging a packaging structure for a tandem-type perovskite battery module as claimed in claim 8, wherein S1 is specifically: and etching one side of the substrate, and forming a metal electrode leading-out end at the etching position in a deposition or screen printing or sputtering mode.
10. The method for packaging a packaging structure for a tandem-type perovskite battery module as claimed in claim 9, wherein S3 is specifically: depositing an electron layer, a perovskite light absorption layer and a hole layer from bottom to top in sequence; or depositing a cavity layer, a perovskite light absorption layer and an electron layer from bottom to top in sequence.
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| CN113471362A (en) * | 2021-05-18 | 2021-10-01 | 宣城先进光伏技术有限公司 | Interconnection process method of perovskite battery |
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