A light-transmitting thin-film photovoltaic module
Patent Information
- Application Number
- CN202521818075.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-25
- Publication Date
- 2026-08-18
- Estimated Expiration
- 2035-08-25
AI Technical Summary
目前业内一般把发电芯片的透光图案设计成直线型，发电区和透光区相互交替排列，但是在实际使用过程中，当BIPV组件挂在建筑物的外墙上时，在部分情况下，在一定的光线条件及某些特定的角度下观察，肉眼可以看到有比较明显的摩尔纹，摩尔纹是两个空间调制频率接近的图案叠加后形成的条纹，摩尔纹的形成严重影响了整体幕墙的视觉效果
[0008]本实施例的一种透光的薄膜光伏组件通过将薄膜光伏电池组件设置成由多个平行段和多个交叉段构成，多个平行段和多个交叉段沿着薄膜光伏电池组件的长度方向依次交替布置，进而使得薄膜光伏组件在薄膜电池膜层区呈现出来的图案局部不规则，摒弃了传统透光的薄膜光伏组件将薄膜光伏电池组件设置成相互平行且间隔的直线线条图案的方式，进而有助于减轻本实施例的透光的薄膜光伏组件在使用过程中形成的摩尔纹。
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Figure CN224653873U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of photovoltaic technology, and in particular to a light-transmitting thin-film photovoltaic module. Background Technology
[0002] Building Integrated Photovoltaics (BIPV) refers to the installation of photovoltaic (PV) modules on the surface of a building's exterior envelope to provide electricity. These modules also function as a part of the building structure, replacing some traditional structural elements such as roofs, facades, and awnings. The PV modules in BIPV provide functions such as light transmission, rain protection, and heat insulation.
[0003] Buildings themselves have a necessary need for natural light, which naturally increases the requirements for the light transmittance of BIPV modules. Compared to crystalline silicon cells, thin-film solar cells can be better processed into light-transmitting modules and can be made into finer lines. This satisfies the light transmittance requirements of the modules, allowing BIPV modules with different light transmittance to be manufactured according to the building's lighting needs.
[0004] To achieve light transmission, thin-film solar cells etch the thin film of the power-generating chip into lines, with the light-transmitting and opaque power-generating areas interlacing. From a distance, the lines are not clearly visible to the human eye; only a slight decrease in light transmittance is apparent. Objects can be seen through the power-generating glass without noticeable obstruction. Currently, the industry generally designs the light-transmitting pattern of the power-generating chip as a straight line, with alternating power-generating and light-transmitting areas. However, in actual use, when BIPV modules are hung on the exterior wall of a building, under certain lighting conditions and at specific angles, noticeable moiré patterns can be seen with the naked eye. Moiré patterns are stripes formed by the superposition of two patterns with similar spatial modulation frequencies. The formation of moiré patterns significantly affects the overall visual effect of the curtain wall. Utility Model Content
[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a light-transmitting thin-film photovoltaic module, which helps to reduce moiré patterns formed during the use of the thin-film photovoltaic module.
[0006] A light-transmitting thin-film photovoltaic module according to an embodiment of the present invention includes a glass substrate. The surface of the glass substrate is provided with a plurality of thin-film battery layer regions arranged at intervals, and a light-transmitting region is provided between two adjacent thin-film battery layer regions. Each thin-film battery layer region is provided with a thin-film photovoltaic cell module. The thin-film photovoltaic cell module has a plurality of parallel segments and a plurality of intersecting segments, and the plurality of parallel segments and the plurality of intersecting segments are arranged alternately along the length direction of the thin-film photovoltaic cell module.
[0007] A light-transmitting thin-film photovoltaic module according to an embodiment of the present invention has at least the following beneficial effects:
[0008] This embodiment of a light-transmitting thin-film photovoltaic module configures the thin-film photovoltaic cell module as consisting of multiple parallel segments and multiple intersecting segments. The multiple parallel segments and multiple intersecting segments are arranged alternately along the length direction of the thin-film photovoltaic cell module, thereby making the pattern presented by the thin-film photovoltaic module in the thin-film cell layer area locally irregular. This abandons the traditional method of setting the thin-film photovoltaic cell module as a pattern of parallel and spaced straight lines, thus helping to reduce the moiré pattern formed during the use of the light-transmitting thin-film photovoltaic module of this embodiment.
[0009] In some embodiments of the present invention, the thin-film photovoltaic cell module includes two strip-shaped thin-film photovoltaic cells, which are arranged parallel to each other and spaced apart, and are arranged intersectingly at intervals along the length direction of the thin-film photovoltaic cell module to form a plurality of parallel segments and a plurality of intersecting segments.
[0010] In some embodiments of this utility model, between two adjacent thin-film photovoltaic cell modules, one of the thin-film photovoltaic cell modules is a first thin-film photovoltaic cell module, and the other thin-film photovoltaic cell module is a second thin-film photovoltaic cell module; a plurality of parallel segments of the first thin-film photovoltaic cell module and a plurality of intersecting segments of the second thin-film photovoltaic cell module are arranged in a one-to-one correspondence along the transverse direction of the glass substrate, and a plurality of intersecting segments of the first thin-film photovoltaic cell module and a plurality of parallel segments of the second thin-film photovoltaic cell module are arranged in a one-to-one correspondence along the transverse direction of the glass substrate.
[0011] In some embodiments of this utility model, the distance between the two thin-film photovoltaic cells of the thin-film photovoltaic cell module at the parallel segment is L3, and the length of the parallel segment of the thin-film photovoltaic cell module is L1, satisfying 2L3≤L1≤50L3.
[0012] In some embodiments of this utility model, the distance between the two thin-film photovoltaic cells of the thin-film photovoltaic cell module at the parallel segment is L3, and the length of the parallel segment of the thin-film photovoltaic cell module is L1, satisfying 5L3≤L1≤15L3.
[0013] In some embodiments of this utility model, the distance between the two thin-film photovoltaic cells of the thin-film photovoltaic cell module at the parallel segment is L3, and the length of the parallel segment of the thin-film photovoltaic cell module is L1, satisfying 8L3≤L1≤10L3.
[0014] In some embodiments of this utility model, the distance between the two thin-film photovoltaic cells of the thin-film photovoltaic cell module at the parallel segment is L3, and the length of the intersection segment of the thin-film photovoltaic cell module is L2, satisfying 2L3≤L2≤50L3.
[0015] In some embodiments of this utility model, the distance between the two thin-film photovoltaic cells of the thin-film photovoltaic cell module at the parallel segment is L3, and the length of the intersection segment of the thin-film photovoltaic cell module is L2, satisfying 5L3≤L2≤15L3.
[0016] In some embodiments of this utility model, the distance between the two thin-film photovoltaic cells of the thin-film photovoltaic cell module at the parallel segment is L3, and the length of the intersection segment of the thin-film photovoltaic cell module is L2, satisfying 8L3≤L2≤10L3.
[0017] In some embodiments of this utility model, the length of the parallel segment of the thin-film photovoltaic cell module is L1, and the length of the intersecting segment of the thin-film photovoltaic cell module is L2, satisfying L1 = L2. Attached Figure Description
[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:
[0019] Figure 1 This is a schematic diagram of the structure of a light-transmitting thin-film photovoltaic module according to certain embodiments of the present invention;
[0020] Figure 2 for Figure 1 A schematic diagram of the structure of a thin-film photovoltaic module in a light-transmitting thin-film photovoltaic module is shown.
[0021] Figure 3 This is a schematic diagram of the structure of a light-transmitting thin-film photovoltaic module according to another embodiment of the present invention. Detailed Implementation
[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0023] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.
[0024] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0025] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0026] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0027] Reference Figures 1 to 2 and mainly refer to Figure 1 According to certain embodiments of the first aspect of this utility model, a light-transmitting thin-film photovoltaic module is sometimes simply referred to as a "thin-film photovoltaic module". A light-transmitting thin-film photovoltaic module includes a glass substrate 100. The surface of the glass substrate 100 is provided with a plurality of spaced-apart thin-film battery layer regions, and a light-transmitting region 200 is provided between two adjacent thin-film battery layer regions. Each thin-film battery layer region is provided with a thin-film photovoltaic module 300. The thin-film photovoltaic module 300 has a plurality of parallel segments 301 and a plurality of intersecting segments 302, which are arranged alternately along the length direction of the thin-film photovoltaic module 300.
[0028] This embodiment of a light-transmitting thin-film photovoltaic module configures the thin-film photovoltaic cell module 300 as consisting of multiple parallel segments 301 and multiple intersecting segments 302. The multiple parallel segments 301 and multiple intersecting segments 302 are arranged alternately along the length direction of the thin-film photovoltaic cell module 300, thereby making the pattern presented by the thin-film photovoltaic module 300 in the thin-film cell layer area locally irregular. This abandons the traditional method of setting the thin-film photovoltaic cell module as a pattern of parallel and spaced straight lines, thus helping to reduce the moiré pattern formed during the use of the light-transmitting thin-film photovoltaic module of this embodiment.
[0029] Reference Figure 1 and Figure 2 In some embodiments of this utility model, the thin-film photovoltaic cell module 300 includes two strip-shaped thin-film photovoltaic cells 310. The two thin-film photovoltaic cells 310 are arranged parallel to each other and spaced apart. The two thin-film photovoltaic cells 310 are arranged intersectingly along the length direction of the thin-film photovoltaic cell module 300 at intervals to form multiple parallel segments 301 and multiple intersecting segments 302. Therefore, the structure of the thin-film photovoltaic cell module 300 of the light-transmitting thin-film photovoltaic module in this embodiment is more compact and easier to manufacture.
[0030] To better reduce moiré patterns formed during actual use of thin-film photovoltaic modules, in some embodiments of this invention, the distance between the two thin-film photovoltaic cells 310 of the thin-film photovoltaic cell module 300 at the parallel section 301 is L3, and the length of the parallel section 301 of the thin-film photovoltaic cell module 300 is L1, satisfying 2L3≤L1≤50L3. In this embodiment, the distance L3 between the two thin-film photovoltaic cells 310 of the thin-film photovoltaic cell module 300 at the parallel section 301 is 0.05-5mm. By setting the length of the parallel section 301 to 2-50 times the distance L3 between the two thin-film photovoltaic cells 310 at the parallel section 301, the pattern presented by the thin-film photovoltaic cell module 300 in the thin-film cell film layer area can be locally irregular, which can reduce moiré patterns without affecting the light transmittance of the thin-film photovoltaic module.
[0031] In some embodiments of this utility model, the distance between the two thin-film photovoltaic cells 310 of the thin-film photovoltaic cell module 300 at the parallel segment 301 is L3, and the length of the parallel segment 301 of the thin-film photovoltaic cell module 300 is L1, satisfying 5L3≤L1≤15L3.
[0032] In some embodiments of this utility model, the distance between the two thin-film photovoltaic cells 310 of the thin-film photovoltaic cell module 300 at the parallel section 301 is L3, and the length of the parallel section 301 of the thin-film photovoltaic cell module 300 is L1, satisfying 8L3≤L1≤10L3, which can be determined according to actual needs.
[0033] To further reduce moiré patterns formed during actual use of thin-film photovoltaic modules, in some embodiments of this invention, the distance between the two thin-film photovoltaic cells 310 of the thin-film photovoltaic module 300 at the parallel section 301 is L3, and the length of the intersection section 302 of the thin-film photovoltaic module 300 is L2, satisfying 2L3≤L2≤50L3. In some embodiments of this invention, the distance between the two thin-film photovoltaic cells 310 of the thin-film photovoltaic module 300 at the parallel section 301 is L3, and the length of the intersection section 302 of the thin-film photovoltaic module 300 is L2, satisfying 5L3≤L2≤15L3. In some embodiments of this invention, the distance between the two thin-film photovoltaic cells 310 of the thin-film photovoltaic module 300 at the parallel section 301 is L3, and the length of the intersection section 302 of the thin-film photovoltaic module 300 is L2, satisfying 8L3≤L2≤10L3. By adopting the above structure, the pattern of the thin-film photovoltaic module 300 in the thin-film cell layer area can be locally irregular, thereby reducing moiré patterns without affecting the light transmittance of the thin-film photovoltaic module.
[0034] In some embodiments of this utility model, the length of the parallel segment 301 of the thin-film photovoltaic cell module 300 is L1, and the length of the intersecting segment 302 of the thin-film photovoltaic cell module 300 is L2, L1 = L2, that is, the length of the parallel segment 301 and the length of the intersecting segment 302 of the thin-film photovoltaic cell module 300 are the same, which facilitates the production and processing of the thin-film photovoltaic cell module 300.
[0035] Reference Figure 1 , Figure 2 and Figure 3This invention discloses a light-transmitting thin-film photovoltaic module according to another embodiment of the first aspect of the present invention. The thin-film photovoltaic module of this embodiment differs from the thin-film photovoltaic module of the above embodiment in that the layout of two adjacent thin-film photovoltaic cell modules 300 is different. In this embodiment, between two adjacent thin-film photovoltaic cell modules 300, one thin-film photovoltaic cell module 300 is a first thin-film photovoltaic cell module, and the other thin-film photovoltaic cell module 300 is a second thin-film photovoltaic cell module. Multiple parallel segments 301 of the first thin-film photovoltaic cell module and multiple intersecting segments 302 of the second thin-film photovoltaic cell module are arranged in a one-to-one correspondence along the transverse direction of the glass substrate 100. In this embodiment, by arranging two adjacent thin-film photovoltaic cell modules 300 staggered along the length of the glass substrate 100, the pattern presented by the thin-film photovoltaic module in the thin-film cell layer area of this embodiment has greater differences in local positions, thereby avoiding mutual interference between the patterns presented by two adjacent thin-film photovoltaic cell modules 300 in the thin-film cell layer area, and further preventing the formation of moiré patterns.
[0036] Reference Figure 1 , Figure 2 and Figure 3 A method for manufacturing a light-transmitting thin-film photovoltaic module according to certain embodiments of the second aspect of this utility model includes the following steps:
[0037] a) Prepare materials, including glass substrates and opaque power-generating glass chips;
[0038] b) Process the opaque power-generating glass chip prepared in step a, removing the film layer in the area of the power-generating glass chip that needs to transmit light, thereby obtaining the required thin-film photovoltaic cell module 300; specifically, the processing of the opaque power-generating glass chip in step b includes the following steps: e) Design a CAD pattern according to the area of the opaque power-generating glass chip that needs to transmit light, manufacture a screen printing stencil according to the CAD pattern, cover the surface of the opaque power-generating glass chip with the screen printing stencil, then screen print acid-resistant ink on the surface of the opaque power-generating glass chip through the screen printing stencil, and finally place the power-generating glass chip with the screen-printed acid-resistant ink in an acidic solution for etching, thereby removing the film layer in the area of the power-generating glass chip that needs to transmit light, thereby obtaining the required thin-film photovoltaic cell module 300;
[0039] c) The thin-film photovoltaic cell module 300 obtained in step b is composited onto the surface of a glass substrate to obtain a light-transmitting thin-film photovoltaic module.
[0040] The manufacturing method of this embodiment designs a CAD pattern based on the area of the opaque power-generating glass chip that needs to be transparent, and manufactures a screen printing stencil based on the CAD pattern. Then, acid-resistant ink is screen printed on the surface of the opaque power-generating glass chip using the screen printing stencil, and the transparent film layer of the power-generating glass chip is etched using an acidic solution. This greatly accelerates the production speed of the thin-film photovoltaic cell module 300 from the power-generating glass chip, thereby greatly improving the production efficiency of the thin-film photovoltaic module and helping to reduce the production cost of the transparent thin-film photovoltaic module.
[0041] Reference Figure 1 , Figure 2 and Figure 3 Another embodiment of the second aspect of this utility model discloses a method for manufacturing a light-transmitting thin-film photovoltaic module, comprising the following steps:
[0042] a) Prepare materials, including glass substrates and opaque power-generating glass chips;
[0043] b) Process the opaque power-generating glass chip prepared in step a, removing the film layer in the area of the power-generating glass chip that needs to be transparent, thereby obtaining the required thin-film photovoltaic cell module 300. Specifically, the processing of the opaque power-generating glass chip in step b includes the following steps: f) Design a CAD pattern according to the area of the opaque power-generating glass chip that needs to be transparent, then input the CAD pattern into the control system of the laser processing device, then place the opaque power-generating glass chip on the work stage of the laser processing device, and then the control system of the laser processing device controls the laser to emit laser light and remove the film layer in the area of the power-generating glass chip that needs to be transparent, thereby obtaining the required thin-film photovoltaic cell module 300.
[0044] c) The thin-film photovoltaic cell module 300 obtained in step b is composited onto the surface of a glass substrate to obtain a light-transmitting thin-film photovoltaic module.
[0045] The manufacturing method of this embodiment designs a CAD pattern for the area of the opaque power-generating glass chip that needs to be transparent, and inputs the CAD pattern into the control system of the laser processing device. Then, the control system of the laser processing device controls the laser to emit laser light and removes the film layer of the area of the power-generating glass chip that needs to be transparent, which greatly speeds up the production of thin-film photovoltaic cell module 300 from the power-generating glass chip, thereby greatly improving the production efficiency of thin-film photovoltaic module and helping to reduce the production cost of transparent thin-film photovoltaic module.
[0046] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.
Claims
1. A light-transmitting thin-film photovoltaic module, characterized in that, include: A glass substrate (100) has a plurality of thin-film battery film layer regions arranged at intervals on its surface, and a light-transmitting region (200) is provided between two adjacent thin-film battery film layer regions. Each of the thin-film battery membrane layers is provided with a thin-film photovoltaic cell module (300), the thin-film photovoltaic cell module (300) having a plurality of parallel segments (301) and a plurality of intersecting segments (302), the plurality of parallel segments (301) and the plurality of intersecting segments (302) being arranged alternately along the length direction of the thin-film photovoltaic cell module (300).
2. The light-transmitting thin-film photovoltaic module according to claim 1, characterized in that, The thin-film photovoltaic cell module (300) includes two strip-shaped thin-film photovoltaic cells (310), which are arranged parallel to each other and spaced apart. The two thin-film photovoltaic cells (310) are arranged intersectingly along the length of the thin-film photovoltaic cell module (300) to form a plurality of parallel segments (301) and a plurality of intersecting segments (302).
3. A light-transmitting thin-film photovoltaic module according to claim 1 or 2, characterized in that, Between two adjacent thin-film photovoltaic cell modules (300), one of the thin-film photovoltaic cell modules (300) is a first thin-film photovoltaic cell module, and the other thin-film photovoltaic cell module (300) is a second thin-film photovoltaic cell module; The plurality of parallel segments (301) of the first thin-film photovoltaic cell module and the plurality of intersecting segments (302) of the second thin-film photovoltaic cell module are arranged in a one-to-one correspondence along the transverse direction of the glass substrate (100). The plurality of intersecting segments (302) of the first thin-film photovoltaic cell module and the plurality of parallel segments (301) of the second thin-film photovoltaic cell module are arranged in a one-to-one correspondence along the transverse direction of the glass substrate (100).
4. A light-transmitting thin-film photovoltaic module according to claim 2, characterized in that, The distance between the two thin-film photovoltaic cells (310) of the thin-film photovoltaic cell module (300) at the parallel segment (301) is L3, and the length of the parallel segment (301) of the thin-film photovoltaic cell module (300) is L1, satisfying 2L3≤L1≤50L3.
5. A light-transmitting thin-film photovoltaic module according to claim 4, characterized in that, The distance between the two thin-film photovoltaic cells (310) of the thin-film photovoltaic cell module (300) at the parallel segment (301) is L3, and the length of the parallel segment (301) of the thin-film photovoltaic cell module (300) is L1, satisfying 5L3≤L1≤15L3.
6. A light-transmitting thin-film photovoltaic module according to claim 5, characterized in that, The distance between the two thin-film photovoltaic cells (310) of the thin-film photovoltaic cell module (300) at the parallel segment (301) is L3, and the length of the parallel segment (301) of the thin-film photovoltaic cell module (300) is L1, satisfying 8L3≤L1≤10L3.
7. A light-transmitting thin-film photovoltaic module according to claim 2, characterized in that, The distance between the two thin-film photovoltaic cells (310) of the thin-film photovoltaic cell module (300) at the parallel segment (301) is L3, and the length of the intersection segment (302) of the thin-film photovoltaic cell module (300) is L2, satisfying 2L3≤L2≤50L3.
8. A light-transmitting thin-film photovoltaic module according to claim 7, characterized in that, The distance between the two thin-film photovoltaic cells (310) of the thin-film photovoltaic cell module (300) at the parallel segment (301) is L3, and the length of the intersection segment (302) of the thin-film photovoltaic cell module (300) is L2, satisfying 5L3≤L2≤15L3.
9. A light-transmitting thin-film photovoltaic module according to claim 8, characterized in that, The distance between the two thin-film photovoltaic cells (310) of the thin-film photovoltaic cell module (300) at the parallel segment (301) is L3, and the length of the intersection segment (302) of the thin-film photovoltaic cell module (300) is L2, satisfying 8L3≤L2≤10L3.
10. A light-transmitting thin-film photovoltaic module according to claim 2, characterized in that, The length of the parallel segment (301) of the thin-film photovoltaic cell module (300) is L1, and the length of the intersecting segment (302) of the thin-film photovoltaic cell module (300) is L2, satisfying L1=L2.