Perovskite battery assembly packaging structure
By using a self-trapping light-textured structure and an anti-reflection layer in the perovskite solar cell module encapsulation structure, the problems of low light utilization and glare were solved, the optical performance and mechanical strength of the module were improved, and the application scenarios were expanded.
Patent Information
- Application Number
- CN202520252535.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-02-18
AI Technical Summary
Existing perovskite solar cell modules have low light utilization and glare problems, which limits their application scope.
A perovskite solar cell module encapsulation structure is designed, which employs a textured structure with self-trapping light effect on the light-incident and/or light-excising surfaces of the front and back glass, combined with an anti-reflection layer to form an interlayer light-trapping structure to improve light utilization and reduce glare.
It improves the light utilization rate of photovoltaic modules, enhances mechanical strength and heat dissipation, broadens the application range, and reduces glare problems.
Smart Images
Figure CN223730217U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to photovoltaic module technical field, concretely relates to a perovskite battery module packaging structure. BACKGROUND
[0002] At present, the conventional perovskite solar cell module mainly includes transparent conductive substrate, first transport layer, perovskite light absorption layer, second transport layer, back electrode (metal / transparency electrode), packaging layer and back glass. In the actual application, the transparent conductive substrate and back glass usually adopt flat float glass, and when the light irradiates the surface of the flat plane structure, part of the light will be reflected by the mirror surface and cannot be utilized, resulting in that the utilization rate of the module to the light is low, and the reflected light also causes the glare problem of the module. Meanwhile, the present perovskite battery itself has a high light absorption coefficient, the perovskite absorption layer is thin, and the battery is connected in series to form a dead zone region, resulting in that part of the light penetrates the battery layer and makes the utilization rate of the module to the light low. In addition, part of the application scene has requirements on the glare of the module, resulting in that the application range of the present photovoltaic module is limited. SUMMARY
[0003] The utility model discloses a perovskite battery module packaging structure, which solves the above problems.
[0004] To achieve the above-mentioned purpose, the utility model is realized through the following technical schemes:
[0005] The utility model discloses a perovskite battery module packaging structure, which includes front glass, transparent conductive layer, perovskite battery layer, packaging layer and back glass which are sequentially stacked from top to bottom. At least one of the light entrance surface and the light exit surface of the front glass is provided with a first suede structure having a self-trapping light effect. The surface of the back glass can be provided with or not provided with a second suede structure. If provided, at least one of the light entrance surface and the light exit surface of the back glass is provided with a second suede structure having a self-trapping light effect.
[0006] Further, the perovskite battery module packaging structure includes: the front glass and the back glass are made of tempered glass, and the bending strength is not less than 80.0MPa.
[0007] Further, the perovskite battery module packaging structure includes: the thickness of the front glass and the back glass is respectively set to 1.5-4.0mm.
[0008] Further, the perovskite battery module packaging structure includes: the first suede structure is arranged on the light entrance surface and the light exit surface of the front glass, and the first suede structure arranged on the light entrance surface and the light exit surface of the front glass is the same or different.
[0009] Further, a perovskite battery assembly packaging structure: the first rough surface structure arranged on the light-incident surface and the light-emitting surface of the front glass is different.
[0010] Further, a perovskite battery assembly packaging structure: the second rough surface structure arranged on the light-incident surface and the light-emitting surface of the back glass is the same or different.
[0011] Further, a perovskite battery assembly packaging structure: the second rough surface structure arranged on the light-incident surface and the light-emitting surface of the back glass is different.
[0012] Further, a perovskite battery assembly packaging structure: the first rough surface structure and the second rough surface structure are arranged as regular or irregular pattern structures (pyramid-like structures).
[0013] Further, a perovskite battery assembly packaging structure: the packaging structure further comprises an anti-reflection layer arranged on the light-incident surface of the front glass.
[0014] The perovskite battery assembly packaging structure has the advantages that:
[0015] (1) The perovskite battery assembly packaging structure has the advantages that the light utilization rate of the assembly is improved, and the mechanical strength is high and the heat dissipation effect is good.
[0016] (2) The perovskite battery assembly packaging structure has the advantages that the rough surface pattern structure with self-trapping light effect is arranged on the light-incident surface and / or the light-emitting surface of the front glass and the back glass, and the interlayer light-trapping structure is formed by cooperation of the layers, the self-trapping light structure and the interlayer light-trapping structure on the back glass fully reflect the incident or reflected light, so that the light of the incident assembly can be fully absorbed by the perovskite battery layer, thereby improving the light utilization rate of the assembly.
[0017] (3) The perovskite battery assembly packaging structure has the advantages that the rough surface structure arranged therein can reflect light multiple times when the sunlight is irradiated, thereby increasing the light utilization rate and improving the assembly efficiency and short-circuit current density; meanwhile, the back glass fully reflects the incident light in the structure and diffusely reflects the light, thereby greatly prolonging the optical path, so that the perovskite battery layer can finally fully absorb the sunlight and finally convert the sunlight into electric energy, thereby achieving the purpose of improving the conversion efficiency.
[0018] (4) The packaging structure of the perovskite battery assembly designed in the utility model is provided with a suede structure with a self-trapping light effect on one side surface of the back glass close to the packaging layer, so that a layer intertrapping light structure is formed between the perovskite battery layer, the packaging layer and the back glass, the layer intertrapping light structure can be used for fully reflecting the light transmitted through the perovskite battery layer, so that the light transmitted through the perovskite battery layer is fully absorbed by the perovskite absorbing layer (the transmission direction of the light is the direction from the light receiving surface of the perovskite battery layer to the back light surface).
[0019] (5) The packaging structure of the perovskite battery assembly designed in the utility model is provided with a suede structure (including a first suede structure and a second suede structure) on the light entrance surface and / or the light exit surface of the front glass and the back glass, which can effectively reduce the reflected light brightness observed by the human eye and the proportion of the incident light absorbed by the battery, can not only improve the light utilization rate of the assembly structure and improve the optical performance, but also reduce the glare of the assembly, so as to meet the use of the assembly application scene with requirements for glare and widen the application range of the assembly. At the same time, by providing the suede structure on the light entrance surface and / or the light exit surface of the front glass and the back glass, the heat conduction characteristics of the surfaces of the front glass and the back glass are also changed, so that the heat is more uniform on the surfaces of the front glass and the back glass, which is beneficial to heat dissipation and makes the heat dissipation effect of the assembly better. BRIEF DESCRIPTION OF DRAWINGS
[0020] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can also be obtained according to these drawings without creative labor for the person skilled in the art.
[0021] Figure 1 The structure schematic view of a packaging structure of a perovskite battery assembly designed for the embodiment 1 of the utility model;
[0022] Figure 2 The structure schematic view of a packaging structure of a perovskite battery assembly designed for the embodiment 2 of the utility model;
[0023] Figure 3 The structure schematic view of a packaging structure of a perovskite battery assembly designed for the embodiment 3 of the utility model;
[0024] Figure 4 The structure schematic view of a packaging structure of a perovskite battery assembly designed for the embodiment 4 of the utility model;
[0025] Figure 5 The structure schematic view of a packaging structure of a perovskite battery assembly designed for the embodiment 5 of the utility model; Figure 6 The Figure 5 The middle layer intertrapping light schematic view
[0026] Figure 7 A schematic diagram of a perovskite battery module encapsulation structure designed for Embodiment 6 of this utility model;
[0027] Figure 8 A schematic diagram of a perovskite battery module encapsulation structure designed for Embodiment 7 of this utility model.
[0028] The markings in the diagram are: 1-front glass, 2-transparent conductive layer, 3-perovskite cell layer, 4-encapsulation layer, 5-back glass, 6-first textured structure, 7-second textured structure, and 8-anti-reflective layer. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0030] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "top," and "bottom," etc., indicating orientation or positional relationships, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this utility model described herein can be implemented in orders other than those illustrated or described herein.
[0031] Example 1
[0032] like Figure 1 As shown, this embodiment 1 provides a perovskite solar cell module encapsulation structure, which includes: a front glass 1, a transparent conductive layer 2, a perovskite solar cell layer 3, an encapsulation layer 4, and a back glass 5 (made of float glass) stacked from top to bottom.
[0033] The front glass 1 has a first textured surface 6 on both its light-incident and light-exit surfaces. The first textured surface 6 on the light-incident and light-exit surfaces of the front glass 1 are different. The first textured surface 6 on the light-incident surface of the front glass 1 is set with a regular pattern, while the first textured surface 6 on the light-exit surface is set with an irregular pattern. The back glass 5 does not have a second textured surface, that is, the light-incident and light-exit surfaces of the back glass 5 are flat surfaces. Both the front glass 1 and the back glass 1 are made of tempered glass with a bending strength of not less than 80.0 MPa. The thickness of the front glass 1 and the back glass 5 is set to 1.5-4.0 mm, respectively.
[0034] Example 2
[0035] like Figure 2 As shown, Embodiment 2 provides a perovskite solar cell module encapsulation structure. The difference between Embodiment 2 and Embodiment 1 is that Embodiment 2 has an anti-reflection layer 8 on the light-incident surface of the front glass 1, that is, an anti-reflection layer 8 is set on the regular pattern structure of the light-incident surface. The rest is the same as Embodiment 1. Embodiment 2 improves the module power by more than 1.5% compared to Embodiment 1.
[0036] Example 3
[0037] like Figure 3 As shown, this embodiment 3 provides a perovskite solar cell module encapsulation structure, which includes: a front glass 1, a transparent conductive layer 2, a perovskite solar cell layer 3, an encapsulation layer 4, and a back glass 5, which are stacked sequentially from top to bottom.
[0038] The front glass 1 has a first textured surface 6 on both its light-incident and light-exit surfaces. The first textured surface 6 on the light-incident and light-exit surfaces of the front glass 1 are different. The first textured surface 6 on the light-incident surface of the front glass 1 is set as a regular pattern structure, while the first textured surface 6 on the light-exit surface is set as an irregular pattern structure. The back glass 5 has a second textured surface 7 with a self-trapping light effect on its light-incident surface (that is, a second textured surface 7 is set on the side of the back glass 5 near the encapsulation layer 4, and the second textured surface 7 is set as a regular pattern structure). An anti-reflection layer 8 is also provided on the light-incident surface of the front glass 1.
[0039] In the above embodiment 3, the front glass 1 has a light transmittance of over 85%. The first textured surface structure 6 provided on the light-incident and light-excising surfaces of the front glass 1 can effectively reduce the brightness of reflected light observed by the human eye and the proportion of incident light absorbed by the battery layer, resulting in high light utilization of the module and improved optical performance. At the same time, the textured surface structure on the surfaces of the front glass 1 and the back glass 5 changes their thermal conductivity characteristics, making heat more uniform on the glass surface, which is beneficial for heat dissipation.
[0040] The difference between Example 3 and Example 2 is that the back glass 5 in Example 3 is a regularly embossed patterned glass encapsulation, which improves the heat dissipation effect of the module and increases the utilization rate of incident light on the back of the module.
[0041] Example 4
[0042] like Figure 4 As shown, Example 4 provides a perovskite solar cell module encapsulation structure. The difference between Example 4 and Example 3 is that a second textured structure 7 is provided on the light-emitting surface of the back glass 5 in Example 4 (i.e., a second textured structure 7 is provided on the side of the back glass 5 facing away from the encapsulation layer 4). The rest is the same as in Example 3. Compared with Example 3, the module of Example 4 has improved impact resistance and abrasion resistance.
[0043] Example 5
[0044] like Figure 5 As shown, Example 5 provides a perovskite solar cell module encapsulation structure. The difference between Example 5 and Example 2 is that: in Example 5, a second textured structure 7 with a self-trapping light effect is provided on the light-incident surface of the back glass 5 (the second textured structure 7 is set as an irregular patterned structure, which can be regarded as a pyramid-like structure). In Example 5, the back glass 5 is a pyramid-like embossed textured glass encapsulation, which improves the power of the module by more than 1.0%.
[0045] Figure 6 This is a schematic diagram of the interlayer light trapping in the component of Example 5. Light transmitted through the perovskite cell layer 3 enters the back glass 5. Utilizing the irregular patterned structure, sunlight is fully reflected and diffused within the patterned structure, greatly extending the optical path. This allows the perovskite cell layer 3 to fully absorb sunlight, thereby improving the conversion efficiency.
[0046] Example 6
[0047] like Figure 7 As shown, this embodiment 6 provides a perovskite solar cell module encapsulation structure, which includes: a front glass 1, a transparent conductive layer 2, a perovskite solar cell layer 3, an encapsulation layer 4, and a back glass 5, which are stacked sequentially from top to bottom.
[0048] The front glass 1 has an irregular first textured surface 6 on its light-incident surface and a flat surface on its light-outcident surface; the back glass 5 has an irregular second textured surface 7 on its light-incident and light-outcident surfaces, respectively.
[0049] Example 7
[0050] like Figure 8As shown, the embodiment 7 provides a perovskite battery assembly packaging structure, which comprises: front glass 1, transparent conductive layer 2, perovskite battery layer 3, packaging layer 4 and back glass 5 which are sequentially stacked from top to bottom.
[0051] Wherein, the light entrance surface and the light exit surface of the front glass 1 are respectively provided with irregular first rough surface structure 6; the light entrance surface and the light exit surface of the back glass 5 are also respectively provided with irregular second rough surface structure 7.
[0052] The difference between embodiment 7 and embodiment 6 is that the light exit surface of the front glass 1 in embodiment 7 is not a flat surface, but an irregular pattern surface; compared with embodiment 6, embodiment 7 improves the adhesion of the transparent conductive layer 2 and the front glass 1 and the anti-glare effect.
[0053] Comparative example 1
[0054] The difference between comparative example 1 and embodiment 1 is that the front glass 1 and the back glass 5 in comparative example 1 adopt float glass (not tempered), and the mechanical strength is reduced by about 10% compared with embodiment 1.
[0055] Test:
[0056] The components of embodiment 1-7 and comparative example 1 are subjected to power test and mechanical load test, and the test results are as follows:
[0057] (1) Under standard test conditions (STC), the photovoltaic component power tester is used to test the electrical performance of the photovoltaic component: compared with comparative example 1, the power of the components of embodiment 1-7 is increased by about 1-2%, the rough surface structure in the utility model increases the light transmittance, and the light trapping structure can reflect almost all the vertical incident light and oblique light, increasing the light utilization of the invalid area of the battery, thereby improving the power of the component.
[0058] (2) The components of embodiment 1-7 gradually add load to 5400Pa on the surface of the front glass, so that it is uniformly distributed, and maintains this load for 1 hour, without mechanical damage phenomenon, while the components of comparative example 1 have obvious mechanical damage phenomenon.
[0059] Compared with comparative example 1, the components of embodiment 1-7 have good light transmittance and mechanical strength and good heat dissipation performance, and significantly improve the output power of the component.
[0060] The above is the preferred embodiment of the utility model, which is only used to explain the utility model, and does not limit the utility model. Any obvious changes or changes derived from the technical scheme of the utility model are still within the protection scope of the utility model.
Claims
1. A perovskite cell assembly encapsulation structure, characterized in that, The packaging structure comprises, from top to bottom, a front glass (1), a transparent conductive layer (2), a perovskite battery layer (3), a packaging layer (4), and a back glass (5) which are sequentially stacked; Wherein, at least one of the light-incident surface and the light-emitting surface of the front glass (1) is provided with a first textured structure (6) having a self-trapping light effect; the surface of the back glass (5) can be provided with or not provided with a second textured structure (7); If provided, at least one of the light-incident surface and the light-emitting surface of the back glass (5) is provided with a second textured structure (7) having a self-trapping light effect.
2. The perovskite battery assembly encapsulation structure of claim 1, wherein, The front glass (1) and the back glass (5) are both tempered glass, and the bending strength thereof is not less than 80.0 MPa.
3. The perovskite battery assembly encapsulation structure of claim 1, wherein, The thickness of the front glass (1) and the back glass (5) is respectively set to 1.5-4.0 mm.
4. The perovskite battery assembly encapsulation structure of claim 1, wherein, The first textured structure (6) is provided on both the light-incident surface and the light-emitting surface of the front glass (1), and the first textured structure (6) provided on the light-incident surface and the light-emitting surface of the front glass (1) is the same or different.
5. The perovskite cell assembly encapsulation structure of claim 4, wherein, The first textured structure (6) provided on the light-incident surface and the light-emitting surface of the front glass (1) is different.
6. The perovskite battery assembly encapsulation structure of claim 1, wherein, The second textured structure (7) is provided on both the light-incident surface and the light-emitting surface of the back glass (5), and the second textured structure (7) provided on the light-incident surface and the light-emitting surface of the back glass (5) is the same or different.
7. The perovskite cell assembly encapsulation structure of claim 6, wherein, The second textured structure (7) provided on the light-incident surface and the light-emitting surface of the back glass (5) is different.
8. The perovskite battery assembly encapsulation structure according to any one of claims 1-7, wherein, The first textured structure (6) and the second textured structure (7) are provided as regular or irregular pattern structures.
9. The perovskite battery assembly encapsulation structure according to any one of claims 1-8, wherein, The packaging structure further comprises an anti-reflection layer (8) provided on the light-incident surface of the front glass (1).