Reflecting device of cylindrical photovoltaic cell

Abstract

The utility model relates to a reflecting device of a cylindrical photovoltaic cell, which is used for electrically connecting and installing a cell power supply contact at at least one end of the cylindrical photovoltaic cell, and comprises a reflecting bearing seat and two supporting seats, and the inner side of the reflecting bearing seat is provided with a reflecting surface. The two supporting seats are mounted at two ends in the reflecting surface, at least one supporting seat at the upper end is provided with a group of bearing seat power supply contacts, and the bearing seat power supply contacts are in contact with battery power supply contacts of the cylindrical photovoltaic battery.

Description

[0001] This application claims priority to a patent application filed in Taiwan, China, with application number 113202109, filed on March 11, 2024, and with invention name “Reflection device for cylindrical photovoltaic cells”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to a photovoltaic cell, and in particular to a reflective device for a cylindrical photovoltaic cell. Background Art

[0003] The research of solar cells is a highly anticipated direction in renewable energy. Although most commercial products today use silicon as their main material, organic solar cells developed using polymer materials have attracted attention from the industry and academia due to their simple manufacturing process, low cost, light material, and flexibility.

[0004] Further utilizing the flexible characteristics of thin film photovoltaic cells, referring to the application number of the utility model patent case No. 113200937 and the US patent No. US7235736 previously applied by the applicant, a non-planar cylindrical photovoltaic structure is provided to allow more light receiving area after the sunlight is displaced. In terms of application, the above-mentioned strip-shaped cylindrical photovoltaic cell structure can be arranged in parallel.

[0005] Among them, the application number of the utility model patent case previously applied by the applicant of this case is No. 113200937, which uses the lower half of the cylindrical photovoltaic structure to absorb indoor light or reflected light from the lower part to perform photoelectric reaction, but the utilization of light is still limited. Especially for outdoor products, the reflection of light should be utilized.

[0006] Therefore, the applicant is aware of the limitations of the above structural technology, and based on years of relevant experience in this field, careful observation and research, and the application of theory, proposes a rationally designed and effective application. Utility Model Content

[0007] Therefore, the main purpose of the present application is to provide a novel reflective device for cylindrical photovoltaic cells, which can fully reflect outdoor light so that the lower half of the cylindrical photovoltaic cell assembly can still fully perform photoelectric reaction to generate electricity.

[0008] In order to achieve the above-mentioned purpose, the present application provides a reflecting device for a cylindrical photovoltaic cell, which is used to electrically connect the battery power contact of at least one end of the cylindrical photovoltaic cell. The reflecting device includes: a reflecting seat and two supporting seats. The reflecting seat has a reflecting surface on its inner side. The two supporting seats are installed at both ends of the reflecting surface, and at least one of the supporting seats has a set of seat power contacts, which are in contact with the battery power contacts of the cylindrical photovoltaic cell.

[0009] In one embodiment of the present application, a support seat is provided with a snap-fit ​​ring, and a support power contact is provided inside the snap-fit ​​ring. A transparent sleeve of a cylindrical photovoltaic cell is installed between two snap-fit ​​rings of two support seats, so that the battery power contact at at least one end of the transparent sleeve is in contact with the support power contact in the snap-fit ​​ring.

[0010] In one embodiment of the present application, the cross-section of the reflective support is arc-shaped, curved, triangular, square or trapezoidal.

[0011] In one embodiment of the present application, a cylindrical photovoltaic cell comprises: a transparent sleeve and a circular tubular photovoltaic assembly. At least one of the two closed ends of the transparent sleeve has a set of battery power contacts. The circular tubular photovoltaic assembly is formed by curling a flexible photovoltaic assembly and is arranged inside the transparent sleeve. The flexible photovoltaic assembly comprises: a light-transmitting plastic substrate, a lower conductive layer, a photovoltaic layer, an upper conductive layer and an electrode conductor. The lower conductive layer is arranged on the side of the light-transmitting plastic substrate, and the lower conductive layer is composed of a plurality of lower electrode circuits. The photovoltaic layer is composed of a plurality of photovoltaic units, and the plurality of photovoltaic units are arranged on the plurality of lower electrode circuits, so that a gap is formed between each photovoltaic unit. The upper conductive layer is composed of a plurality of upper electrode circuits, and the plurality of upper electrode circuits are arranged on the sides of the plurality of photovoltaic units and are electrically connected to the plurality of lower electrode circuits. The electrode conductor is electrically connected to the lower conductive layer or the upper conductive layer, and is electrically connected to the battery power contact of the transparent sleeve.

[0012] In one embodiment of the present application, the thickness of the flexible photovoltaic component is 0.1 μm-500 μm.

[0013] In one embodiment of the present application, the thickness of the flexible photovoltaic component is 10 μm-150 μm.

[0014] In one embodiment of the present application, the photovoltaic layer is an organic solar cell, a copper indium gallium selenide thin film solar cell, a cadmium tin oxide thin film solar cell, a silicon thin film solar cell, a perovskite thin film solar cell or a dye-sensitized solar cell.

[0015] In one embodiment of the present application, a plurality of photovoltaic units are stacked in sequence by an electron transport layer, an active layer, and a hole transport layer.

[0016] In one embodiment of the present application, a plurality of photovoltaic units are stacked in sequence by a hole transport layer, an active layer, and an electron transport layer.

[0017] In one embodiment of the present application, the electrode conductor is a flexible flat cable, copper foil, copper wire or silver glue.

[0018] In one embodiment of the present application, the circular tubular photovoltaic component is curled and bent and placed inside a transparent sleeve, so that the light-transmitting plastic substrate is adjacent to the inner layer of the transparent sleeve and the photovoltaic layer faces inward.

[0019] In one embodiment of the present application, a protective layer is provided on the upper conductive layer, and the circular tubular photovoltaic assembly is placed inside the transparent sleeve so that the transparent plastic substrate is adjacent to the transparent sleeve, the photovoltaic layer faces inward, and the protective layer is provided on the photovoltaic layer and the upper conductive layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 , is a schematic diagram of the unfolding of the flexible photovoltaic module of the present application;

[0021] Figure 2 ,for Figure 1 A partial enlarged schematic diagram of a photovoltaic layer on a flexible photovoltaic module;

[0022] Figure 3 ,for Figure 1 A schematic side view of a flexible photovoltaic module;

[0023] Figure 4 ,for Figure 1 Schematic diagram of a flexible photovoltaic module being rolled up and bent into a circular tubular photovoltaic module;

[0024] Figure 5 , is a schematic diagram of a circular tubular photovoltaic module of the present application being placed inside a transparent casing;

[0025] Figure 6 ,for Figure 5 Schematic diagram of axial side view;

[0026] Figure 7 ,for Figure 6 Another schematic diagram of a circular tubular photovoltaic module placed inside a transparent casing;

[0027] Figure 8 , is a schematic diagram of the installation and decomposition of the cylindrical photovoltaic cell and the reflective device of the present application;

[0028] Fig. 9 ,for Figure 8 A three-dimensional schematic diagram of the appearance of a cylindrical photovoltaic cell and a reflective device after installation;

[0029] Fig.10 ,for Fig. 9 Schematic diagram of axial side view;

[0030] Fig.11 , is a schematic diagram of another support base of the present application;

[0031] Fig.12 , which is a schematic diagram of the usage status of this application.

[0032] Description of reference numerals:

[0033] 100: transparent casing;

[0034] 101, 102: battery power supply contacts;

[0035] 200: Circular tube photovoltaic module;

[0036] 210: flexible photovoltaic module;

[0037] 211: light-transmitting plastic substrate;

[0038] 212: lower conductive layer;

[0039] 2121: lower electrode circuit;

[0040] 213: photovoltaic layer;

[0041] 2131: Photovoltaic unit;

[0042] 2131a: electron transport layer;

[0043] 2131b: active layer;

[0044] 2131c: hole transport layer;

[0045] 214: gap;

[0046] 215: upper conductive layer;

[0047] 2151: upper electrode circuit;

[0048] 216: electrode wire;

[0049] 217: protective layer;

[0050] 300: reflection device;

[0051] 301: reflection seat;

[0052] 3011: reflective surface;

[0053] 302: support seat;

[0054] 3021, 3022: socket power supply contacts;

[0055] 3023: snap-fit ​​ring;

[0056] 400: ceiling;

[0057] 500: The sun. DETAILED DESCRIPTION

[0058] The technical content and detailed description of this application are described as follows with reference to the accompanying drawings:

[0059] See also Figures 1 to 3 , the flexible photovoltaic module of the present application is unfolded, Figure 1 A partial enlargement of the photovoltaic layer on the flexible photovoltaic module. Figure 1 As shown in the figure, the flexible photovoltaic component 210 of the present application includes: a light-transmitting plastic substrate 211, a lower conductive layer 212, a photovoltaic layer 213, an upper conductive layer 215 and an electrode conductor 216.

[0060] When the flexible photovoltaic component 210 is manufactured, a light-transmitting plastic substrate 211 is first prepared. The light-transmitting plastic substrate 211 is polyimide (PI), a hybrid PI, polyethylene terephthalate (PET), polyethers Ulfone (PES), polyethylene naphthalate (PEN) or cycloolefin polymer (COP). The light-transmitting plastic substrate 211 selected in this application is but not limited to polyethylene terephthalate (PET).

[0061] Next, a lower conductive layer 212 is formed on the light-transmitting plastic substrate 211. The lower conductive layer 212 can be formed into a plurality of transparent lower electrode lines 2121 by etching technology containing inorganic conductive materials. In the present figure, the inorganic conductive material is indium tin oxide (ITO) or silver paste. The present application selects but is not limited to indium tin oxide ITO.

[0062] Next, a photovoltaic layer 213 is fabricated on the side of the lower conductive layer 212. The photovoltaic layer 213 is composed of a plurality of photovoltaic units 2131. The plurality of photovoltaic units 2131 are arranged on the side of the plurality of lower electrode lines 2121, so that there are gaps 214 between the plurality of photovoltaic units 2131. The plurality of photovoltaic units 2131 are sequentially composed of a stacked structure of an electron transfer layer 2131a, an active layer 2131b and a hole transfer layer 2131c, or sequentially composed of a stacked structure of a hole transfer layer 2131c, an active layer 2131b and an electron transfer layer 2131a. The photovoltaic layer 213 is an organic solar cell, a copper indium gallium selenide (CIGS) thin film solar cell, a cadmium tetroxide (CdTe) thin film solar cell, a silicon (α-Si) thin film solar cell, a perovskite thin film solar cell or a dye-sensitized solar cell (DSSC).

[0063] Next, an upper conductive layer 215 is formed on the side of the plurality of photovoltaic units 2131 and electrically connected to the lower conductive layer 212. The upper conductive layer 215 may be formed by evaporating, sputtering or coating an inorganic conductive material and then etching to form a plurality of transparent upper electrode lines 2151. In this figure, the inorganic conductive material is aluminum or silver.

[0064] Finally, the electrode conductor 216 is manufactured. The electrode conductor 216 is a flexible flat cable (FPC) or is printed on the side of the light-transmitting plastic substrate 211 with copper foil, copper wire or silver glue, and is electrically connected to the lower conductive layer 212 or the upper conductive layer 215. In this way, a semi-finished flexible photovoltaic component is completed. The semi-finished flexible photovoltaic component and the electrode conductor 216 are electrically connected to complete the production of the flexible photovoltaic component 210. The thickness of the flexible photovoltaic component 210 is 0.1μm to 500μm. The thickness of the flexible photovoltaic component 210 is 10μm to 150μm.

[0065] See also Figures 4 to 6 ,for Figure 1 The flexible photovoltaic module is curled and bent into a circular tubular photovoltaic module, and the circular tubular photovoltaic module of the present application is placed inside the transparent casing and Figure 5 Schematic diagram of axial side view. As shown in the figure: first, the flexible photovoltaic assembly 210 is rolled and bent to form a circular tubular photovoltaic assembly 200. When the circular tubular photovoltaic assembly 200 is rolled and bent and placed inside the transparent sleeve 100, the light-transmitting plastic substrate 211 is arranged on the inner layer of the transparent sleeve 100, the light-transmitting plastic substrate 211 is adjacent to the inner layer of the transparent sleeve 100 outward, and the photovoltaic layer 213 is inward. In this figure, the transparent sleeve 100 is plastic or glass. In the embodiment of the present application, the transparent sleeve 100 is but not limited to glass. During the manufacturing process, one end of the two ends of the transparent sleeve 100 can be sealed first, or not sealed.

[0066] When the circular tubular photovoltaic assembly 200 is placed inside the transparent sleeve 100, the electrode wire 216 electrically connected to the circular tubular photovoltaic assembly 200 can be electrically connected to a set of battery power contacts (pillars) 101 and 102 at both ends of the transparent sleeve 100, or the electrode wire 216 electrically connected to the circular tubular photovoltaic assembly 200 can be set at one end of the transparent sleeve 100 at a battery power contact (pillar) 101 (not shown). After the electrode wire 216 is electrically connected to the battery power contacts 101 and 102 at both ends of the transparent sleeve 100 or the battery power contact 101 at one end, the transparent sleeve 100 can be vacuumed to less than 10-3torr after the packaging operation, or the transparent sleeve 100 can be filled with nitrogen or an inert gas.

[0067] See also Figure 7 ,for Figure 6 Another axial side view schematic diagram of a circular tube photovoltaic module placed inside a transparent sleeve. Figures 2 to 4 The difference is that a protective layer 217 (or packaging layer, or water- and gas-blocking layer) is formed on the upper conductive layer 215 to block water and gas, so that the flexible photovoltaic component 210 is not affected by water vapor and becomes disabled.

[0068] After the flexible photovoltaic component 210 is packaged by attaching a protective layer (or packaging layer, water- and gas-blocking layer) 217 ​​on the upper conductive layer 215 of the photovoltaic layer 213, the cylindrical photovoltaic component 200 is curled and bent. When the cylindrical photovoltaic component 200 is placed inside the transparent sleeve 100, the translucent plastic substrate 211 is arranged on the inner layer of the transparent sleeve 100, the photovoltaic layer 213 faces inward, and the protective layer 217 is arranged on top of the photovoltaic layer 213 and the upper conductive layer 215 (the innermost layer).

[0069] See also Figures 8 to 10 , the cylindrical photovoltaic cell and the reflector device of the present application are installed and decomposed, Figure 8 The cylindrical photovoltaic cells and reflective devices have a three-dimensional appearance after installation. Fig. 9 As shown in the figure: after the cylindrical photovoltaic cell of the present application is manufactured, the cylindrical photovoltaic cell is installed on a reflective device 300 , and the reflective device 300 includes a reflective seat 301 and two support seats 302 .

[0070] The inner side of the reflective support 301 has a reflective surface 3011, which can reflect sunlight after being mirror-finished so that the lower half of the cylindrical photovoltaic cell can still fully perform photoelectric reaction to supply power. In this figure, the cross section of the reflective support 301 is arc-shaped, curved, triangular, square or trapezoidal.

[0071] The two support seats 302 are installed at the two ends of the reflective support seat 301, and each of the two support seats 302 has a support power contact 3021 or two support power contacts 3021, 3022. When the cylindrical photovoltaic cell is installed between the two support seats 302, the battery power contact 101 or 101, 102 of the transparent sleeve 100 is in contact with the support power contact 3021 or 3021, 3022, so that the power of the photoelectric conversion of the cylindrical photovoltaic cell is output through the support seat 302.

[0072] See also Fig.11 , another schematic diagram of a support base of the present application. As shown in the figure: the support base 302 in this figure and Figures 8-9The support base 302 is substantially the same as the support base 302, the difference being that the support base 302 has a snap-in ring 3023, and the snap-in ring 3023 has a support power contact (not shown) inside, so that the transparent sleeve 100 of the cylindrical photovoltaic cell can be installed between the snap-in rings 3023 of the two support bases 302, so that the battery power contact 101 or 101, 102 at at least one end of the transparent sleeve 100 is in contact with the support power contact in the two snap-in rings 3023, so that the power for photoelectric conversion of the cylindrical photovoltaic cell is output through the two support bases 302.

[0073] See also Fig.12 , a schematic diagram of the use status of the present application. As shown in the figure: the cylindrical photovoltaic cell manufactured by the present application can be a plurality of cylindrical photovoltaic cells in parallel, and the electric energy collected by the photoelectric conversion can be collected in parallel or in series through the reflecting device 300 and electrically connected to the collecting battery. For example, the cylindrical photovoltaic cell can be manufactured and applied on an outdoor ceiling 400 to absorb the light of the sun 500, which can replace the conventional photovoltaic panels and increase the lighting area. The reflecting seat 301 of the cylindrical photovoltaic cell can fully reflect the outdoor light, so that the lower half of the cylindrical photovoltaic cell assembly can still fully carry out the photoelectric reaction to supply power.

[0074] However, the above description is only a preferred embodiment of the present application and is not intended to limit the patent protection scope of the present application. Therefore, all equivalent changes made using the contents of the present application specification or drawings are also included in the scope of protection of the present application and are hereby stated.

Claims

1. A reflecting device for a cylindrical photovoltaic cell, characterized in that: The reflector is used to electrically connect the battery power contacts at both ends of the cylindrical photovoltaic cell. The reflector comprises: A reflective seat, the inner side of which has a reflective surface; Two support seats are installed at two ends of the interior of the reflecting surface, and at least one of the support seats has a group of support seat power contacts, and the support seat power contacts are in contact with the battery power contacts of the cylindrical photovoltaic cell.

2. The reflecting device for cylindrical photovoltaic cells according to claim 1, characterized in that: The two support seats are respectively provided with a snap-fit ​​ring, and at least one of the snap-fit ​​rings has a seat power supply contact inside. The transparent sleeve of the cylindrical photovoltaic cell is installed between the two snap-fit ​​rings of the two support seats, so that the battery power supply contact of the transparent sleeve is in contact with the seat power supply contact inside the snap-fit ​​ring.

3. The reflecting device for cylindrical photovoltaic cells according to claim 1, characterized in that: The cross section of the reflection support is arc-shaped, curved, triangular, square or trapezoidal.

4. The reflecting device for cylindrical photovoltaic cells according to claim 1, characterized in that: The cylindrical photovoltaic cell comprises: A transparent sleeve having at least one set of battery power contacts at two closed ends; The circular tube photovoltaic assembly is formed by rolling up the flexible photovoltaic assembly and is arranged inside the transparent sleeve. The flexible photovoltaic assembly includes: Light-transmitting plastic substrate; A lower conductive layer is disposed on the side of the light-transmitting plastic substrate, and the lower conductive layer is composed of a plurality of lower electrode circuits; A photovoltaic layer, composed of a plurality of photovoltaic units, wherein the plurality of photovoltaic units are arranged on the plurality of lower electrode lines so that a gap is formed between each of the photovoltaic units; An upper conductive layer, composed of a plurality of upper electrode circuits, the plurality of upper electrode circuits being disposed on the sides of the plurality of photovoltaic units and being electrically connected to the plurality of lower electrode circuits; and The electrode wire is electrically connected to the lower conductive layer or the upper conductive layer, and is electrically connected to the battery power contact of the transparent sleeve.

5. The reflecting device for cylindrical photovoltaic cells according to claim 4, characterized in that: The thickness of the flexible photovoltaic component is 0.1 μm-500 μm.

6. The reflecting device for cylindrical photovoltaic cells according to claim 5, characterized in that: The thickness of the flexible photovoltaic component is 10 μm-150 μm.

7. The reflecting device for cylindrical photovoltaic cells according to claim 4, characterized in that: The photovoltaic layer is an organic solar cell, a copper indium gallium selenide thin film solar cell, a cadmium tin oxide thin film solar cell, a silicon thin film solar cell, a perovskite thin film solar cell or a dye-sensitized solar cell.

8. The reflecting device for cylindrical photovoltaic cells according to claim 4, characterized in that: The plurality of photovoltaic units are stacked in sequence by an electron transfer layer, an active layer and a hole transfer layer.

9. The reflecting device for cylindrical photovoltaic cells according to claim 4, characterized in that: The plurality of photovoltaic units are stacked in sequence by a hole transfer layer, an active layer and an electron transfer layer.

10. The reflecting device for cylindrical photovoltaic cells according to claim 4, characterized in that: The electrode conductor is a flexible flat cable, copper foil, copper wire or silver glue.

11. The reflecting device for cylindrical photovoltaic cells according to claim 4, characterized in that: The circular tubular photovoltaic component is curled and bent and placed inside the transparent sleeve, so that the light-transmitting plastic substrate is adjacent to the inner layer of the transparent sleeve and the photovoltaic layer faces inward.

12. The reflecting device for cylindrical photovoltaic cells according to claim 4, characterized in that: A protective layer is provided on the upper conductive layer. The circular tubular photovoltaic assembly is placed inside the transparent sleeve so that the transparent plastic substrate is adjacent to the transparent sleeve, the photovoltaic layer faces inward, and the protective layer is provided on the photovoltaic layer and the upper conductive layer.

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