Novel photovoltaic vacuum glass and manufacturing method thereof

Abstract

According to the technical scheme, the novel photovoltaic vacuum glass and the manufacturing method thereof are provided, the photovoltaic vacuum glass comprises the first glass substrate, the second glass substrate, the supporting columns and the photovoltaic power generation assembly, the supporting columns in a vacuum cavity are used for forming a circuit access between the first glass substrate and the second glass substrate and insulating isolation between circuits or devices, and compared with a traditional wiring method, the manufacturing method has the advantages that the manufacturing cost is reduced; according to the optimized photovoltaic vacuum glass, the supporting columns serve as a part of circuit design, a circuit design space and a heat conduction space are expanded to the whole vacuum glass cavity, the circuit connection mode is simplified, element layout and circuit design are rationalized, and the photovoltaic vacuum glass is suitable for multifunctional integrated photovoltaic vacuum glass products.

Description

Technical Field

[0001] The invention belongs to the composite field of glass deep processing and solar energy utilization, and specifically relates to a novel photovoltaic vacuum glass and a manufacturing method thereof. Background Art

[0002] Photovoltaic vacuum glass is a special glass material used in solar photovoltaic systems. It is usually composed of a vacuum layer formed between two thin layers of glass and a photovoltaic device covered by a thin layer of glass on one side. Photovoltaic power generation components are used to absorb solar energy and convert it into electrical energy. This process requires the use of electronic devices in the vacuum layer to collect and aggregate current from multiple locations, and then lead the aggregated current through electrodes through mutually insulated paths.

[0003] Existing photovoltaic vacuum glass usually sets the photovoltaic power generation film and the circuit on the glass plate on the same side. For example, a photovoltaic power generation vacuum glass with publication number CN113871502A sets the photovoltaic power generation film in series and parallel on the glass plate on the same side in the shape of stripes, rectangular arrays, circular arrays or other shapes. This setting has the following technical defects: due to the small space in the vacuum thin layer and the limited area of ​​the glass plate, the volume of the current collection components and electrodes is limited, and the expected circuit design and insulation between circuits are difficult, making it difficult to achieve effective electrical isolation in the space inside the vacuum glass; due to part of the sunlight being blocked by the circuit and heat accumulation, the photovoltaic vacuum glass suffers from reduced light conversion efficiency, poor system stability and shortened service life. Summary of the invention

[0004] In order to overcome the defects described in the above background technology, the technical solution of the present invention provides a new type of photovoltaic vacuum glass, the vacuum glass includes a first glass substrate and a second glass substrate arranged opposite to each other in an upper and lower direction, a support column is arranged in a vacuum chamber formed between the first glass substrate and the second glass substrate, and the periphery is sealed, the vacuum glass also includes a plurality of photovoltaic power generation components arranged in different areas corresponding to the vacuum chamber, the photovoltaic power generation component includes a battery body and a current collector arranged on both sides of the battery body, the current collector includes a transparent conductive layer covered on the upper side of the first glass substrate and connected to the positive electrode of the battery and a metal layer covered on the upper side of the battery body and connected to the negative electrode of the battery, a patterned conductive circuit adapted to the photovoltaic power generation component is arranged on the lower side of the second glass substrate, the support column includes a conductive support column and an insulating support column arranged in an array, wherein the two ends of the conductive support column are respectively connected to the conductive circuit and the current collector to form a low-resistance connection between the first glass substrate and the second glass substrate and electrically connect the photovoltaic power generation component to form a closed circuit, one end of the insulating support column is connected to the conductive circuit or the first glass substrate, and the other end is connected to the photovoltaic power generation component or the second glass substrate.

[0005] In one embodiment, the photovoltaic power generation component is a perovskite, polycrystalline silicon, monocrystalline silicon, copper amorphous silicon, microcrystalline silicon, copper indium gallium selenide, cadmium telluride, cadmium sulfide or copper zinc selenium sulfur solar cell or a composite solar cell unit formed by connecting multiple solar cells in series and parallel.

[0006] In one embodiment, the perovskite solar cell is provided with a transparent conductive layer, a perovskite absorption layer, an electron transport layer, a hole transport layer and a metal layer in sequence from bottom to top.

[0007] In one embodiment, the transparent conductive layer is an ITO transparent conductive film or a FTO transparent conductive film or an AZO transparent conductive film, and the metal layer is a silver layer.

[0008] In one embodiment, the conductive circuit includes a conductive path and a conductive gasket disposed on the conductive path, and the end of the support column contacts the conductive path through the conductive gasket and is electrically connected to the conductive path.

[0009] In one embodiment, the conductive path is made of conductive silver paste containing silver powder, and the line width of the conductive path is between 0.1 mm and 10.0 mm.

[0010] In one embodiment, the vacuum glass is integrated with OLED and / or electrochromic dimming film, and the OLED and / or electrochromic dimming film is electrically connected to the photovoltaic power generation component.

[0011] In one embodiment, the photovoltaic vacuum glass is configured with a series circuit unit composed of multiple photovoltaic power generation components. The conductive support column is divided into a main support column and a series support column. The two ends of the main support column are respectively connected to the conductive circuit and the metal layer of the photovoltaic power generation component arranged under the corresponding conductive circuit. One end of the series support column is connected to the previous conductive circuit, and the other end is connected to the transparent conductive layer of the photovoltaic power generation component arranged under the next conductive circuit. The conductive circuit connects more than two photovoltaic power generation components in series through the conductive support column.

[0012] In one embodiment, the photovoltaic vacuum glass is provided with at least one continuous conductive line for connecting a plurality of series circuit units.

[0013] In one embodiment, the photovoltaic vacuum glass is also configured with a parallel circuit unit consisting of multiple photovoltaic power generation components, and the two ends of the conductive support column are respectively connected to the conductive circuit and the metal layer of the photovoltaic power generation component, and the conductive circuit connects more than two photovoltaic power generation components in parallel through the conductive support column.

[0014] In one embodiment, the vacuum glass is provided with a switch for controlling the series connection, parallel connection or disconnection between a plurality of photovoltaic power generation components.

[0015] In one embodiment, the vacuum glass is provided with a switching circuit, which is electrically connected or disconnected with a previous conductive circuit through a switching switch, and at least one conductive support column connects the switching circuit and a transparent conductive layer of a subsequent photovoltaic power generation component.

[0016] In one embodiment, the conductive support pillars and the insulating support pillars are arranged in an array with a preset interval, and the width of the conductive line does not exceed the preset interval.

[0017] In one embodiment, a preset interval between the conductive support column and the insulating support column is greater than 50 mm.

[0018] In one embodiment, the conductive support column is made of aluminum zinc oxide material, and the insulating support column is made of glass material.

[0019] In one embodiment, the diameter of the support pillar is between 0.2 mm and 1.5 mm.

[0020] The present invention also provides a method for manufacturing a novel photovoltaic vacuum glass, comprising the following steps: Vacuum glass pre-assembly: placing a first glass substrate and a second glass substrate opposite to each other and forming a vacuum cavity between the two glass substrates; Building a feed-through circuit: The battery body and the current collectors arranged on both sides of the battery body are fixedly installed on the inner side of the first glass substrate. The current collectors include a transparent conductive layer covered on the upper side of the first glass substrate and connected to the positive electrode of the battery and a metal layer covered on the upper side of the battery body and connected to the negative electrode of the battery. A conductive circuit compatible with the photovoltaic power generation component is drawn on the inner side of the second glass substrate by screen printing conductive silver paste process; Arrange support columns: Arrange conductive support columns and insulating support columns in an array in the inner cavity of the vacuum glass; both ends of the conductive support columns are respectively connected to a conductive circuit and a current collector to form a low-resistance connection between the first glass substrate and the second glass substrate and electrically connect the photovoltaic power generation assembly to form a closed circuit; one end of the insulating support column is connected to the conductive circuit or the first glass substrate, and the other end is connected to the current collector or the second glass substrate.

[0021] In one embodiment, the conductive support pillars are formed into an array by picking up and placing; the insulating support pillars are formed into support pillars by dispensing glue, printing glass powder slurry, drying and sintering.

[0022] In order to overcome the above technical problems, the technical solution of the present invention proposes a new type of photovoltaic vacuum glass and a manufacturing method thereof. The photovoltaic vacuum glass includes a first glass substrate, a second glass substrate, a support column and a photovoltaic power generation component. The two ends of the conductive support column are respectively connected to the conductive circuit and the current collector to form a low-resistance connection between the first glass substrate and the second glass substrate and electrically connect the photovoltaic power generation component to form a closed circuit. One end of the insulating support column is connected to the conductive circuit or the first glass substrate, and the other end is connected to the current collector or the second glass substrate. The battery body and the conductive circuit are arranged on opposite sides and one end of the support column is connected to the battery body, and the other end is connected to the conductive circuit. The support column in the vacuum cavity is used to form a circuit path between the two and an insulating isolation between the circuit or the device. Compared with the traditional wiring method, the optimized photovoltaic vacuum glass uses the support column as a part of the circuit design, and expands the circuit design space and the heat conduction space to the entire vacuum glass cavity, which is conducive to simplifying the circuit connection method, rationalizing the component layout and circuit design, and is suitable for multifunctional integrated photovoltaic vacuum glass products. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0024] Figure 1 A schematic diagram of a series circuit of a novel photovoltaic glass provided in an embodiment of the present application; Figure 2 A schematic diagram of a parallel circuit of a novel photovoltaic glass provided in an embodiment of the present application; Figure 3 A schematic diagram of a series-parallel circuit of a novel photovoltaic glass provided in an embodiment of the present application; Figure 4 Schematic diagram of the series-parallel switching circuit of the new photovoltaic glass provided in an embodiment of the present application.

[0025] Key component identification: 1. First glass substrate; 2. Second glass substrate; 3. Photovoltaic power generation assembly; 4. Transparent conductive layer; 5. Metal layer; 6. Conductive circuit; 7. Support column; 71. Conductive support column; 711. Local support column; 712. Series support column; 72. Insulating support column; 8. Switch. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In the present invention, unless otherwise clearly defined and specified, the terms "installed", "connected", "connected", "fixedly connected" and the like should be understood in a broad sense, for example, it can be fixedly connected, detachably connected, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] Existing photovoltaic vacuum glass usually sets the photovoltaic power generation film and the circuit on the same side of the glass plate. This setting has the following technical defects: first, due to the small space in the vacuum thin layer and the limited area of ​​the glass plate, the volume of the current collection components and electrodes is limited, and the circuit design and insulation between circuits are difficult, making it difficult to achieve effective electrical isolation in the space inside the vacuum glass; secondly, due to the partial sunlight being blocked by the circuit and heat accumulation, the photovoltaic vacuum glass suffers from reduced light conversion efficiency, poor system stability, and a short service life.

[0031] In order to overcome the above technical defects, the present application provides a new photovoltaic vacuum glass, referring to Figure 1-Figure 4The novel photovoltaic vacuum glass of the present application comprises a first glass substrate and a second glass substrate which are arranged opposite to each other up and down, a support column is arranged in a vacuum chamber formed between the first glass substrate and the second glass substrate, and the periphery is sealed, the vacuum glass also comprises a plurality of photovoltaic power generation components arranged in corresponding different areas of the vacuum chamber, the photovoltaic power generation component comprises a battery body and a current collector arranged on both sides of the battery body, the current collector comprises a transparent conductive layer covered on the upper side of the first glass substrate and connected to the positive electrode of the battery and a metal layer covered on the upper side of the battery body and connected to the negative electrode of the battery, a conductive circuit adapted to the photovoltaic power generation component is arranged on the lower side of the second glass substrate, the support column comprises a conductive support column and an insulating support column arranged in an array, wherein the two ends of the conductive support column are respectively connected to the conductive circuit and the current collector to form a low-resistance connection between the first glass substrate and the second glass substrate and electrically connect the photovoltaic power generation component. The photovoltaic power generation component forms a closed circuit, one end of the insulating support column is connected to the conductive circuit or the first glass substrate, and the other end is connected to the current collector or the second glass substrate. The battery body and the conductive circuit are arranged on opposite sides, and one end of the support column is connected to the photovoltaic power generation component, and the other end is connected to the conductive circuit. The support column in the vacuum chamber is used to form a circuit path between the two and an insulating isolation between circuits or devices, so as to realize the parallel and series connection of photovoltaic power generation components in different areas and prevent mutual crosstalk between different circuits. Compared with the traditional wiring method, the optimized photovoltaic vacuum glass uses the support column as a part of the circuit design, which has the multiple functions of circuit connection, support, and heat dissipation, and expands the circuit design space and heat conduction space to the entire vacuum glass cavity, which is conducive to simplifying the circuit connection method, rationalizing the component layout and circuit design, and is suitable for multi-functional integrated photovoltaic vacuum glass products.

[0032] Optionally, the photovoltaic power generation component is a perovskite, polycrystalline silicon, monocrystalline silicon, copper amorphous silicon, microcrystalline silicon, copper indium gallium selenide, cadmium telluride, cadmium sulfide or copper zinc selenium sulfur solar cell. In one embodiment of the present application, the photovoltaic power generation component uses a perovskite cell, and the perovskite solar cell is sequentially provided with a transparent conductive layer, a perovskite absorption layer, an electron transport layer, a hole transport layer and a metal layer from bottom to top. Among them, the transparent conductive layer is preferably an ITO transparent conductive film or a FTO transparent conductive film or an AZO transparent conductive film prepared by magnetron sputtering technology, the metal layer is preferably a silver layer prepared by a vacuum coating process, the perovskite absorption layer is preferably a CH3NH3PbI3 perovskite material prepared by a solution process, the electron transport layer is preferably PEDOT:PSS prepared by a solution process, and the hole transport layer is preferably a PCBM prepared by a solution process, and the perovskite solar cell formed in this way has a high photoelectric conversion rate and a fast response speed.

[0033] In one embodiment of the present application, a patterned conductive circuit is made by screen printing conductive silver paste process on the inner side of the second glass substrate, and a precise circuit pattern can be drawn using CAD drawing software. The conductive circuit includes a conductive path and a conductive gasket arranged on the conductive path. The shape of the conductive gasket matches the cross-sectional shape of the support column. The end of the support column contacts the conductive path through the conductive gasket, and a stable, low-impedance electrical connection is formed between the support column and the conductive path, thereby improving the current collection efficiency. The conductive gasket offsets mechanical vibration and impact to a certain extent, reduces friction and wear between the support column and the conductive circuit, effectively prevents the circuit from being disconnected, and prolongs the service life of the circuit. Optionally, the conductive circuit is a "J-shaped" routing with a width of 10 mm, with no breakpoints in the middle, and the conductive circuit can be provided with suitable electrical characteristics such as resistance, capacitance or inductance by adding devices to the circuit or by controlling the conductive circuit path design, silver paste composition, length and width, etc., so as to adapt to different environmental conditions and maintain stable photovoltaic performance.

[0034] In one embodiment of the present application, the conductive path is made of conductive silver paste containing silver powder, which is coated on the inner side of the second glass substrate by screen printing. The line width of the conductive path is 10.00 mm, and the conductive silver paste has good conductivity and adhesion. In another embodiment of the present application, the line width of the conductive path can be selected between 0.1 mm and 10.0 mm according to the electrical characteristics of the circuit such as resistance, capacitance and inductance, so as to ensure that the circuit can maintain stable performance through reliability design under different temperature, humidity, vibration, electromagnetic interference and other environments.

[0035] In one embodiment of the present application, the vacuum glass is integrated with an OLED film and / or an electrochromic dimming film, and the OLED film and / or the electrochromic dimming film are electrically connected to the photovoltaic power generation component, so as to be used in conjunction with the photovoltaic power generation component to enhance the display and dimming performance of the photovoltaic vacuum glass; the first glass substrate and the second glass substrate are made of tempered glass with higher mechanical strength.

[0036] In one embodiment of the present application, reference Figure 1The photovoltaic vacuum glass is configured with a series circuit unit, which includes multiple conductive lines, multiple photovoltaic power generation components and conductive support columns arranged between the conductive lines and the photovoltaic power generation components. The conductive support columns are divided into local support columns and series support columns. The two ends of the local support columns are respectively connected to the conductive lines and the metal layers of the photovoltaic power generation components arranged under the corresponding conductive lines. One end of the series support column is connected to the previous conductive line, and the other end is connected to the transparent conductive layer of the photovoltaic power generation component arranged under the next conductive line. The conductive lines connect two or more photovoltaic power generation components in series through the conductive support columns. On the one hand, stable mechanical and electrical connections are provided by the local support columns and the series support columns, so that the photovoltaic power generation components are reliably connected to the circuit, thereby improving the reliability of the entire system. On the other hand, connecting multiple photovoltaic power generation components in series is beneficial to improving the overall voltage output of the photovoltaic vacuum glass. When the series circuit unit is configured with two photovoltaic power generation components, first and second conductive circuits independently set up above the corresponding photovoltaic power generation components are respectively arranged, the local support column array is distributed and the two ends are respectively connected to the first / second conductive circuit and the metal layer of the first / second photovoltaic power generation component arranged below the corresponding first / second conductive circuit, the series support column array is distributed and one end is connected to the first conductive circuit and the other end is connected to the transparent conductive layer of the second photovoltaic power generation component, so that the two photovoltaic power generation components are connected in series in the same circuit unit by using the local support column, the series support column, the first conductive circuit and the second conductive circuit.

[0037] In one embodiment of the present application, the photovoltaic vacuum glass is equipped with at least one continuous conductive line to connect multiple series circuit units, each series circuit unit is equipped with a specific number of photovoltaic power generation components, and the series circuit units are connected to each other through the conductive line to form an overall series circuit. The series circuit units can be designed and optimized regionally according to the lighting conditions, regional temperature, regional stress, appearance requirements, maintenance conditions, etc., to adapt to different working conditions, improve the performance of photovoltaic cells in different environments, including but not limited to photoelectric conversion efficiency, system operation stability, safety, etc., and facilitate maintenance. Optionally, computer-aided design (CAD) software can be used to optimize the conductive line pattern to ensure that the current is evenly distributed in the series path and reduce local overheating or damage caused by current concentration.

[0038] In one embodiment of the present application, reference Figure 2The photovoltaic vacuum glass is also equipped with a parallel circuit unit consisting of multiple photovoltaic power generation components. The two ends of the conductive support column are respectively connected to the conductive circuit and the metal layer of the photovoltaic power generation component. The conductive circuit connects more than two photovoltaic power generation components in parallel through the conductive support column. The conductive support column can provide stable mechanical and electrical connections, reliably connect the photovoltaic power generation component to the circuit, and is conducive to increasing the total current output of the photovoltaic vacuum glass and reducing internal losses, thereby improving the photoelectric conversion efficiency of the system.

[0039] In one embodiment of the present application, reference Figure 3 A part of the conductive support column is used to connect multiple photovoltaic power generation components in series, and the other part is used to connect multiple photovoltaic power generation components in parallel, so that the photovoltaic vacuum glass is configured with multiple series circuit units to increase the voltage and multiple parallel circuit units to enhance the current, and the voltage and current output of the photovoltaic vacuum glass are matched through the layout of support columns and conductive lines.

[0040] In one embodiment of the present application, the vacuum glass is equipped with a switch for controlling the series connection, parallel connection or disconnection between multiple photovoltaic power generation components. When a higher voltage output is required, it can be switched to the series connection mode; when a larger current output is required, it can be switched to the parallel connection mode. Specifically, refer to Figure 4 , the vacuum glass is configured with a first conductive circuit, a second conductive circuit, a switch circuit, and a fourth conductive circuit. The two photovoltaic power generation components form a parallel circuit through the first and second conductive circuits and the conductive support column. The switch circuit and the fourth conductive circuit are separated and the switch circuit is electrically connected or disconnected with the first conductive circuit / the second conductive circuit through a switching switch. At least one conductive support column connects the switch circuit and the transparent conductive layer of the photovoltaic power generation component below the fourth conductive circuit. At least one conductive support column connects the fourth conductive circuit and the metal layer of the photovoltaic power generation component below. Switches are provided at both ends of the corresponding switch circuit. When the switch is disconnected, multiple photovoltaic power generation components are connected in parallel. When the switch is closed, multiple photovoltaic power generation components are connected in parallel and then in series. The above is only one embodiment of the present application. The parameters such as the switch circuit design, switch position and quantity can be flexibly determined according to the situation. By switching the series-parallel circuit connection mode of the photovoltaic light-emitting components in the photovoltaic vacuum glass, the circuit and voltage output can be adjusted to a reasonable range.

[0041] In one embodiment of the present application, reference Figure 1-Figure 4, the conductive support columns and the insulating support columns are arranged in an array with preset intervals, and the width of the conductive line does not exceed the preset interval, so as to ensure the support of the support columns to the photovoltaic vacuum glass, prevent deformation or damage caused by factors such as wind pressure or snow load, optimize the current / voltage / electric field / heat distribution in the photovoltaic vacuum glass, avoid local overheating or damage, and control the number of support columns in contact with the conductive line by setting a suitable conductive line width, so as to reduce the pressure load of the conductive line, improve the stability of the system operation, and extend the service life of the photovoltaic equipment. Optionally, the conductive support columns and the insulating support columns are arranged in a grid-like interval and evenly distributed in the inner cavity of the vacuum glass. The preset interval between the conductive support columns and the insulating support columns is more than 50mm to reduce electromagnetic interference and ensure the normal operation of the photovoltaic system. In other embodiments, the number and specific positions of the conductive and insulating support columns are set according to the actual needs of the circuit / device.

[0042] In one embodiment of the present application, the conductive support column uses a high-conductivity, low-resistance aluminum-zinc-oxide material to improve the efficiency of current transmission and reduce energy loss, and the insulating support column uses an insulating glass material. Since the glass material has good chemical stability, mechanical strength, temperature adaptability, and light transmittance, it can stably support the vacuum glass structure and form effective circuit isolation under various climatic conditions. In one embodiment of the present application, the diameter of the support column is 0.5 mm, and optionally, the diameter of the support column is between 0.2 mm and 1.5 mm, which has both support and circuit conduction / isolation functions.

[0043] The present application also provides a method for manufacturing a novel photovoltaic vacuum glass, comprising the following steps: Vacuum glass pre-assembly: placing a first glass substrate and a second glass substrate opposite to each other and forming a vacuum cavity between the two glass substrates; Building a feed-through circuit: The battery body and the current collectors arranged on both sides of the battery body are fixedly installed on the inner side of the first glass substrate. The current collectors include a transparent conductive layer covered on the upper side of the first glass substrate and connected to the positive electrode of the battery and a metal layer covered on the upper side of the battery body and connected to the negative electrode of the battery. A conductive circuit compatible with the photovoltaic power generation component is drawn on the inner side of the second glass substrate by screen printing conductive silver paste process; Arrange support columns: The support columns include conductive support columns and insulating support columns arranged in an array, wherein both ends of the conductive support columns are respectively connected to the conductive circuit and the current collector to form a low-resistance connection between the first glass substrate and the second glass substrate and electrically connect the photovoltaic power generation components to form a closed circuit, and one end of the insulating support column is connected to the conductive circuit or the first glass substrate, and the other end is connected to the current collector or the second glass substrate.

[0044] The support columns in the vacuum cavity form a circuit path between the photovoltaic power generation components and the conductive lines, as well as insulation isolation between circuits or devices, thereby realizing the parallel and series connection of photovoltaic power generation components in different areas and preventing mutual crosstalk between different circuits. Compared with the traditional wiring method, the optimized photovoltaic vacuum glass manufacturing method can use the support columns as part of the circuit design, expand the circuit design space and heat conduction space to the entire vacuum glass cavity, which is conducive to simplifying the circuit connection method, rationalizing the component layout and circuit design, and is suitable for multifunctional integrated photovoltaic vacuum glass products.

[0045] In one embodiment of the present application, the conductive support pillars are picked up and placed to form an array; the insulating support pillars are formed by dispensing, printing glass powder slurry, drying and sintering to form support pillars, so as to accurately control the placement positions of the conductive support pillars to adapt to the patterned conductive paths to match the requirements of series and parallel circuit layout, and at the same time, by adjusting the placement density, size and other parameters of the insulating support pillars to match the requirements of different application environments for the mechanical strength of photovoltaic vacuum glass, and maintain the stability of the original circuit path and the insulation isolation between circuits or devices in the vacuum cavity.

[0046] In one embodiment of the present application, a precise circuit pattern can be drawn using CAD drawing software, and then a screen printing conductive silver paste process is used to make a patterned conductive circuit on the inner side of the second glass substrate.

[0047] In one embodiment of the present application, before laying out the conductive circuit, the conductive circuit can have suitable electrical characteristics such as resistance, capacitance or inductance by adding devices to the circuit or by controlling parameters such as the conductive circuit path design, silver paste composition, and length and width, so as to adapt to different environmental conditions and maintain stable photovoltaic performance.

[0048] The above is a detailed introduction to a new type of photovoltaic vacuum glass and a manufacturing method thereof provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the core idea of ​​the present invention. At the same time, for those skilled in the art, according to the ideas and methods of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A novel photovoltaic vacuum glass, comprising a first glass substrate and a second glass substrate disposed opposite to each other in an upper and lower direction, wherein a support column is arranged in a vacuum chamber between the first glass substrate and the second glass substrate and the periphery is sealed, characterized in that: The vacuum glass also includes a plurality of photovoltaic power generation components arranged in correspondence with different areas of the vacuum chamber, the photovoltaic power generation component includes a battery body and current collectors arranged on both sides of the battery body, the current collectors include a transparent conductive layer covered on the upper side of the first glass substrate and connected to the positive electrode of the battery and a metal layer covered on the upper side of the battery body and connected to the negative electrode of the battery, a patterned conductive circuit adapted to the photovoltaic power generation component is arranged on the lower side of the second glass substrate, the support column includes an array-arranged conductive support column and an insulating support column, wherein the two ends of the conductive support column are respectively connected to the conductive circuit and the current collector to form a low-resistance connection between the first glass substrate and the second glass substrate and electrically connect the photovoltaic power generation component to form a closed circuit, one end of the insulating support column is connected to the conductive circuit or the first glass substrate, and the other end is connected to the photovoltaic power generation component or the second glass substrate.

2. The novel photovoltaic vacuum glass according to claim 1, characterized in that: The photovoltaic power generation component is a perovskite, polycrystalline silicon, monocrystalline silicon, copper amorphous silicon, microcrystalline silicon, copper indium gallium selenide, cadmium telluride, cadmium sulfide or copper zinc selenium sulfur solar cell or a composite solar cell unit formed by connecting multiple solar cells in series and parallel.

3. The novel photovoltaic vacuum glass according to claim 2, characterized in that: The perovskite solar cell is provided with the transparent conductive layer, the perovskite absorption layer, the electron transport layer, the hole transport layer and the metal layer in sequence from bottom to top.

4. The novel photovoltaic vacuum glass according to claim 1, characterized in that The transparent conductive layer is an ITO transparent conductive film or a FTO transparent conductive film or an AZO transparent conductive film, and the metal layer is a silver layer.

5. The novel photovoltaic vacuum glass according to claim 1, characterized in that: The conductive circuit includes a conductive path and a conductive pad arranged on the conductive path, and the end of the support column contacts the conductive path through the conductive pad and is electrically connected to the conductive path.

6. The novel photovoltaic vacuum glass according to claim 5, characterized in that: The conductive path is made of conductive silver paste containing silver powder, and the line width of the conductive path is between 0.1 mm and 10.0 mm.

7. The novel photovoltaic vacuum glass according to claim 1, characterized in that: The vacuum glass is integrated with OLED and / or an electrochromic dimming film, and the OLED and / or the electrochromic dimming film is electrically connected to the photovoltaic power generation component.

8. The novel photovoltaic vacuum glass according to claim 1, characterized in that: The photovoltaic vacuum glass is configured with a series circuit unit composed of multiple photovoltaic power generation components. The conductive support column is divided into a main support column and a series support column. The two ends of the main support column are respectively connected to the conductive circuit and the metal layer of the photovoltaic power generation component arranged below the corresponding conductive circuit. One end of the series support column is connected to the previous conductive circuit, and the other end is connected to the transparent conductive layer of the photovoltaic power generation component arranged below the next conductive circuit. The conductive circuit connects more than two photovoltaic power generation components in series through the conductive support column.

9. The novel photovoltaic vacuum glass according to claim 8, characterized in that: The photovoltaic vacuum glass is provided with at least one continuous conductive line for connecting a plurality of the series circuit units.

10. The novel photovoltaic vacuum glass according to claim 1, 8 or 9, characterized in that: The photovoltaic vacuum glass is also configured with a parallel circuit unit consisting of multiple photovoltaic power generation components. The two ends of the conductive support column are respectively connected to the conductive circuit and the metal layer of the photovoltaic power generation component. The conductive circuit connects more than two photovoltaic power generation components in parallel through the conductive support column.

11. The novel photovoltaic vacuum glass according to claim 10, characterized in that: The vacuum glass is provided with a switching switch for controlling the series connection, parallel connection or disconnection between the plurality of photovoltaic power generation components.

12. The novel photovoltaic vacuum glass according to claim 11, characterized in that: The vacuum glass is provided with a switching circuit, which is electrically connected or disconnected with the previous conductive circuit through the switching switch, and at least one conductive support column connects the switching circuit and the transparent conductive layer of the next photovoltaic power generation component.

13. The novel photovoltaic vacuum glass according to claim 1, characterized in that: The conductive support columns and the insulating support columns are arranged in an array with a preset interval, and the width of the conductive line does not exceed the preset interval.

14. The novel photovoltaic vacuum glass according to claim 13, characterized in that: The preset interval between the conductive support column and the insulating support column is greater than 50 mm.

15. The novel photovoltaic vacuum glass according to claim 1, characterized in that: The conductive support column is made of aluminum zinc oxide material, and the insulating support column is made of glass material.

16. The novel photovoltaic vacuum glass according to claim 15, characterized in that: The diameter of the support column is between 0.2 mm and 1.5 mm.

17. A method for manufacturing a novel photovoltaic vacuum glass, characterized in that: The following steps are involved: Vacuum glass pre-assembly: placing a first glass substrate and a second glass substrate opposite to each other and forming a vacuum cavity between the two glass substrates; Building a feed-through circuit: a battery body and current collectors arranged on both sides of the battery body are fixedly installed on the inner side of the first glass substrate, the current collectors include a transparent conductive layer covered on the upper side of the first glass substrate and connected to the positive electrode of the battery and a metal layer covered on the upper side of the battery body and connected to the negative electrode of the battery, and a conductive circuit adapted to the photovoltaic power generation component is drawn on the inner side of the second glass substrate by screen printing conductive silver paste process; Arrange support columns: Arrange conductive support columns and insulating support columns in an array in the inner cavity of the vacuum glass, wherein two ends of the conductive support columns are respectively connected to the conductive circuit and the current collector to form a low-resistance connection between the first glass substrate and the second glass substrate and electrically connect the photovoltaic power generation assembly to form a closed circuit, and one end of the insulating support column is connected to the conductive circuit or the first glass substrate, and the other end is connected to the current collector or the second glass substrate.

18. The method for manufacturing the novel photovoltaic vacuum glass according to claim 17, characterized in that: The conductive support columns are picked up and placed to form an array; the insulating support columns are formed by dispensing glue, printing glass powder slurry, drying and sintering.

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