Dimmable photovoltaic power generation green building glass

Abstract

The invention discloses a light-adjustable photovoltaic power generation green building glass. The adjustable photovoltaic power generation green building glass sequentially and mainly comprises outdoor side outer piece photovoltaic glass, power generation substrate glass, outdoor side inner piece tempered glass, a dye liquid crystal functional layer and indoor side tempered coated glass from outside to inside. Wherein the outdoor side outer piece photovoltaic glass, the power generation substrate glass, the outdoor side inner piece tempered glass and the dye liquid crystal functional layer are bonded through PVB (Polyvinyl Butyral) films; the outdoor inner tempered glass and the indoor tempered coated glass are separated through a molecular sieve; the outdoor outer photovoltaic glass and the power generation substrate glass convert solar energy into direct current, the direct current is transmitted to a storage battery of the energy storage and control unit, and the storage battery supplies power to a dye liquid crystal functional layer; when solar radiation illumination is insufficient, the storage battery is charged by the power grid through the charger, and normal power supply of the dye liquid crystal functional layer is guaranteed. The composite glass solves the problems of sun shading, glare prevention, renewable energy utilization and the like of doors, windows and glass curtain walls.

Description

Technical Field

[0001] The invention belongs to the technical field of green buildings, and in particular relates to a light-adjustable photovoltaic power generation green building glass. Background Art

[0002] Sustainable development is an important national development strategy, and green buildings are an important manifestation of practicing sustainable development in the field of construction engineering. They can not only better save and utilize resources, but also reduce damage and impact on the environment.

[0003] Lighting and ventilation are basic functions of buildings, which are generally achieved through fixed and open sashes of aluminum alloy doors and windows and glass curtain walls. When designing aluminum alloy doors and windows and glass curtain walls, it is not only necessary to use green energy-saving products, but also to meet a series of technical and environmental standards. Their performance and quality have a great impact on the life, health, work efficiency and happiness of residents.

[0004] Traditional aluminum alloy doors and windows and glass curtain walls focus more on the physical properties and indicators such as wind pressure resistance, water tightness, air tightness, in-plane deformation, thermal performance, sound insulation performance, etc. that must be achieved as required by the specifications, but rarely involve the glass's anti-glare, sun shading, renewable energy utilization and other performance. Summary of the invention

[0005] The purpose of the present invention is to provide a dimmable photovoltaic green architectural glass to solve the technical problems of anti-glare, sunshade, renewable energy utilization and the like of the above-mentioned glass.

[0006] An embodiment of the present invention provides a dimmable photovoltaic power generation green building glass, and the dimmable photovoltaic power generation green building glass comprises:

[0007] Outdoor outer photovoltaic glass 1;

[0008] The power generation substrate glass 3 is bonded and fixed to the outdoor outer photovoltaic glass 1 through the first PVB film 2;

[0009] The outdoor inner tempered glass 5 is bonded and fixed to the power generation substrate glass 3 via a second PVB film 4;

[0010] The dye liquid crystal functional layer 10 is located in the gas layer 11 of the hollow glass and is bonded and fixed to the outdoor inner tempered glass 5 through the third PVB film 9;

[0011] The indoor tempered coated glass 13 is separated from the outdoor inner tempered glass 5 by a molecular sieve 7 .

[0012] The outdoor inner tempered glass 5 and the indoor tempered coated glass 13 are bonded and sealed by butyl adhesive 8 and polysulfide adhesive / neutral silicone structural adhesive 6.

[0013] Optionally, the outdoor outer photovoltaic glass 1 and the power generation substrate glass 3 convert solar energy into direct current, which is then transmitted to the battery of the energy storage and control unit. The energy storage and control unit consists of a charger, a battery, a controller, and a transformer. The charger plays a rectifying role, converting the AC power of the power grid into direct current to charge the battery; the battery is used to store the electric energy generated by the photovoltaic glass, and can be charged by the power grid when the solar radiation is insufficient; the controller includes automatic control and on-site manual control (buttons, touch screen), and the automatic control includes sensor control (automatic response to light sensing), mobile phone remote control, and time control; the transformer adjusts the output voltage of the battery to match the input voltage of the dye liquid crystal functional layer 10.

[0014] Optionally, the dye liquid crystal functional layer 10 can realize intelligent adjustment of light transmittance on the basis of meeting daily use, so as to achieve the effects of glass anti-glare, sun shading, and green energy saving.

[0015] Optionally, the coating surface 12 is provided on the indoor tempered coated glass 13 to better meet the indoor thermal insulation and energy saving effects.

[0016] Optionally, the thickness of the outdoor outer photovoltaic glass 1, the outdoor inner tempered glass 5 and the indoor tempered coated glass 13 should be determined based on calculations of their strength and deflection, and meet the maximum allowable area requirements for safety glass in Article 7.1.1 of the national industry standard "Technical Code for Application of Architectural Glass" JGJ113-2015.

[0017] Optionally, the outdoor outer photovoltaic glass 1, the power generation substrate glass 3, the outdoor inner tempered glass 5, the dye liquid crystal functional layer 10, and the indoor tempered coated glass 13 are all set to be ultra-white tempered glass. The self-explosion rate of ultra-white tempered glass is very low and its self-explosion rate can be ignored.

[0018] Optionally, the thickness of the insulating glass gas layer 11 should not be less than 9 mm.

[0019] Optionally, the aluminum spacer bars of the molecular sieve 7 are filled with a desiccant to always keep the hollow glass gas layer 11 dry and prevent condensation on the glass. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a vertical view of a dimmable photovoltaic green building glass in an embodiment of the present invention;

[0021] Figure 2 For the present invention Figure 1 AA section view in;

[0022] Figure 3 For the present invention Figure 1 1-1 section diagram in;

[0023] Figure 4 This is a working principle diagram of a dimmable photovoltaic green architectural glass according to an embodiment of the present invention.

[0024] Description of the drawings: 1. Outdoor outer photovoltaic glass; 2. First PVB film; 3. Power generation substrate glass; 4. Second PVB film; 5. Outdoor inner tempered glass; 6. Polysulfide adhesive / neutral silicone structural adhesive; 7. Molecular sieve; 8. Butyl adhesive; 9. Third PVB film; 10. Dye liquid crystal functional layer; 11. Insulating glass gas layer; 12. Coated surface; 13. Indoor tempered coated glass. DETAILED DESCRIPTION

[0025] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The modes described in the following exemplary embodiments do not represent all modes consistent with the present invention. Instead, they are merely examples of devices consistent with some aspects of the present invention as detailed in the appended claims.

[0026] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantitative limitation, but indicate that there is at least one. If only "one" is referred to, it will be separately stated. "Multiple" or "several" means two or more. Unless otherwise specified, words such as "front", "rear", "lower" and / or "upper" are only for the convenience of explanation and are not limited to one position or one spatial orientation. Words such as "include" or "comprise" mean that the elements or objects appearing in front of "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Connected" or "connected" and similar words are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect. The singular forms "a", "an", "the" and "the" used in the present specification and the appended claims are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0027] like Figure 1-3 As shown, an embodiment of the present invention provides a dimmable photovoltaic power generation green building glass. The dimmable photovoltaic power generation green building glass mainly includes, from outside to inside, an outdoor outer photovoltaic glass 1, a power generation substrate glass 3, an outdoor inner tempered glass 5, a dye liquid crystal functional layer 10, and an indoor tempered coated glass 13; wherein, the outdoor outer photovoltaic glass 1, the power generation substrate glass 3, the outdoor inner tempered glass 5 and the dye liquid crystal functional layer 10 are all bonded by PVB film; the outdoor inner tempered glass 5 and the indoor tempered coated glass 13 are separated by molecular sieves.

[0028] The dimmable photovoltaic green architectural glass is provided with a dye liquid crystal functional layer 10 in the hollow glass gas layer 11 to realize intelligent adjustment of light transmittance, and achieve the effects of anti-glare, sunshade, and green energy saving. The working principle of the dye liquid crystal dimming functional layer 10: when the power is off, the negative liquid crystal molecules are arranged perpendicular to the glass substrate, and the dichroic dye is vertical accordingly, allowing light to pass through, and the glass is transparent, thereby allowing natural light to enter the room, reducing dependence on artificial lighting, and saving energy. When the power is on, the liquid crystal molecules are deflected parallel to the glass substrate by the electric field force, and the absorption directions of the dye liquid crystal are orthogonal to each other. According to Malus's law, the incident light is absorbed, and the glass is dark, achieving a sunshade effect and preventing glare, and improving indoor comfort.

[0029] In addition, compared with the physical sunshade device with blinds in the hollow glass of traditional aluminum alloy doors and windows, the use of the dye liquid crystal functional layer 10 not only has a fast response speed for indoor light and dark switching, but also makes the switching more convenient and free; at the same time, it greatly reduces the overall thickness of the glass. Under the conditions of the same door and window series, the structural thickness of the glass pressure line can be greatly increased, the rigidity of the glass pressure line can be improved, and quality accidents of glass collapse caused by the instability of the glass pressure line under strong wind pressure can be avoided.

[0030] It should be noted that the thickness of the outdoor outer photovoltaic glass 1, the outdoor inner tempered glass 5 and the indoor tempered coated glass 13 should be determined based on the calculation of their strength and deflection, and meet the maximum allowable area requirements of safety glass in Article 7.1.1 of the national industry standard "Technical Code for Application of Architectural Glass" JGJ113-2015.

[0031] Continue to refer Figure 1-3, the outdoor outer photovoltaic glass 1 and the power generation substrate glass 3 are bonded and fixed by the first PVB film 2; the power generation substrate glass 3 and the outdoor inner tempered glass 5 are bonded and fixed by the second PVB film 4; the outdoor inner tempered glass 5 and the dye liquid crystal functional layer 10 are bonded and fixed by the third PVB film 9; the large amount of PVB (polyvinyl butyral) film used in this embodiment is mainly considered that the laminated glass using PVB film is a kind of safety glass material with excellent performance. Even if any of the tempered glass explodes or is hit by a strong external force and breaks, due to the effect of the internal PVB film, a large amount of impact energy can be absorbed and rapidly attenuated, so the laminated glass is difficult to be penetrated and maintains good integrity. When a building using laminated glass is subjected to explosions, wind disasters, earthquakes, etc., even if the glass is broken, it can still be kept in the door and window and glass curtain wall frame to protect people inside and outside the building from the harm of glass fragments.

[0032] Continue to refer Figure 1-3 The coating surface 12 is arranged on the indoor tempered coated glass 13 to better meet the indoor thermal insulation and energy saving effects.

[0033] like Figure 4 As shown, the outdoor photovoltaic glass 1 and the power generation substrate glass 3 convert solar energy into direct current, which is then transmitted to the battery of the energy storage and control unit. The energy storage and control unit consists of a charger, a battery, a controller, and a transformer. The charger plays a rectifying role, converting the AC power of the power grid into direct current to charge the battery; the battery is used to store the electric energy generated by the photovoltaic glass, and can be charged by the power grid when the solar radiation is insufficient; the controller includes automatic control and on-site manual control (buttons, touch screen), and the automatic control includes sensor control (automatic response to light sensing), mobile phone remote control, and time control; the transformer adjusts the output voltage of the battery to match the input voltage of the dye liquid crystal functional layer 10.

[0034] The advantages of the above embodiment are as follows:

[0035] 1. Photovoltaic power generation glass is integrated with the dye liquid crystal dimming functional layer. Photovoltaic glass can provide clean, renewable green energy for buildings, and can also provide power for the dye liquid crystal dimming functional layer.

[0036] 2. The traditional aluminum alloy door and window sunshade is physical sunshade, which is generally achieved by setting a central louver in the gas layer of the insulating glass of the door and window. This method will cause the gas layer of the insulating glass to be thicker, thus making the overall thickness of the glass thicker, causing problems such as small size and weak rigidity of the glass pressure line structure. Under the action of strong wind pressure, it is easy to cause the glass pressure line to become unstable and then collapse, which is a safety hazard; the central louver is also prone to damage during long-term use, and once damaged, it is difficult to repair it except replacing the glass. The sunshade method using the dye liquid crystal dimming functional layer avoids the above problems.

[0037] 3. Compared with traditional physical shading devices, the light-dark switching response speed of the dye liquid crystal dimming functional layer is fast, and the switching is more convenient and free.

[0038] 4. Compared with traditional Low-E and other coated glass, the addition of a dye liquid crystal dimming functional layer can achieve intelligent adjustment of light transmittance, achieving anti-glare, sun shading, and green energy-saving effects.

[0039] 5. Compared with traditional insulating glass, three-glass two-cavity insulating glass, single-sided laminated insulating glass and other methods of aluminum alloy doors and windows and glass curtain walls, the sound insulation performance of multi-laminated insulating glass is relatively better.

[0040] 6. The use of ultra-white tempered glass can greatly reduce its self-explosion rate.

[0041] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A dimmable photovoltaic green building glass, characterized by: The dimmable photovoltaic green building glass comprises: Outdoor outer photovoltaic glass (1); The power generation substrate glass (3) is bonded and fixed to the outdoor outer photovoltaic glass (1) via a first PVB film (2); The outdoor inner tempered glass (5) is bonded and fixed to the power generation substrate glass (3) via a second PVB film (4); The dye liquid crystal functional layer (10) is located in the gas layer (11) of the hollow glass and is bonded and fixed to the outdoor inner tempered glass (5) via a third PVB film (9); The indoor tempered coated glass (13) is separated from the outdoor inner tempered glass (5) by a molecular sieve (7); The outdoor inner tempered glass (5) and the indoor tempered coated glass (13) are bonded and sealed by butyl adhesive (8) and polysulfide adhesive / neutral silicone structural adhesive (6).

2. The dimmable photovoltaic green architectural glass according to claim 1, characterized in that: The outdoor outer photovoltaic glass (1) and the power generation substrate glass (3) convert solar energy into direct current, which is then transmitted to the battery of the energy storage and control unit. The energy storage and control unit consists of a charger, a battery, a controller, and a transformer.

3. The dimmable photovoltaic green architectural glass according to claim 1, characterized in that: The dye liquid crystal functional layer (10) can intelligently adjust the light transmittance on the basis of meeting the requirements of daily use, thereby achieving the effects of glass anti-glare, sunshade, and green energy saving.

4. The dimmable photovoltaic green architectural glass according to claim 1, characterized in that: The coating surface (12) is provided on the indoor tempered coated glass (13), which can better meet the indoor thermal insulation and energy saving effects.

5. The dimmable photovoltaic green architectural glass according to claim 1, characterized in that: The thickness of the outdoor outer photovoltaic glass (1), the outdoor inner tempered glass (5) and the indoor tempered coated glass (13) should be determined based on the calculation of their strength and deflection, and meet the maximum allowable area requirement of safety glass in Article 7.1.1 of the national industry standard "Technical Code for Application of Architectural Glass" JGJ113-2015.

6. The dimmable photovoltaic green architectural glass according to claim 1, characterized in that: The outdoor outer photovoltaic glass (1), the power generation substrate glass (3), the outdoor inner tempered glass (5), the dye liquid crystal functional layer (10), and the indoor tempered coated glass (13) are all configured to be ultra-white tempered glass. The self-explosion rate of the ultra-white tempered glass is very low and can be ignored.

7. The dimmable photovoltaic green architectural glass according to claim 1, characterized in that: The thickness of the insulating glass gas layer (11) should not be less than 9 mm.

8. The dimmable photovoltaic green architectural glass according to claim 1, characterized in that: The aluminum spacer strips of the molecular sieve (7) are filled with desiccant to keep the hollow glass gas layer (11) dry at all times and prevent condensation on the glass.

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