Curtain wall glass

Abstract

The utility model provides curtain wall glass. The curtain wall glass comprises non-tempered FTO glass, tempered FTO glass, a transparent photovoltaic layer, an electrochromic layer and an EVA adhesive film. The non-tempered FTO glass and the tempered FTO glass face each other; the transparent photovoltaic layer is arranged on one side, facing the tempered FTO glass, of the non-tempered FTO glass, and the transparent photovoltaic layer is used for photovoltaic power generation; the electrochromic layer is arranged on one side, facing the non-tempered FTO glass, of the tempered FTO glass, the electrochromic layer is used for being powered by photovoltaic power generation of the transparent photovoltaic layer, and the color change and the light transmittance are adjustable; the transparent photovoltaic layer and the electrochromic layer are bonded together through the EVA adhesive film so that the non-tempered FTO glass and the tempered FTO glass can be packaged together. Through the arrangement of the transparent photovoltaic layer, the influence of a non-transparent photovoltaic cell on the color changing effect of the electrochromic layer is avoided, that is, the color changing effect of electrochromism can be prevented from being influenced under the condition that photovoltaic power generation supplies power to electrochromism.

Description

Technical Field

[0001] The present disclosure relates to the field of curtain walls, and more particularly to curtain wall glass. Background Art

[0002] Since the birth of photovoltaic power generation technology, conventional thin-film photovoltaic glass, such as CdTe and perovskite thin-film batteries, has gradually been put into mass production; one of the applications of its thin-film solar cell products is BIPV (Building Integrated PV) photovoltaic curtain wall glass, but CdTe and PSCs films are fully absorbed in the visible light band and appear completely black; through multiple scratching by laser scribing process, the transmittance of photovoltaic glass can be achieved to be 0-60%; the transmittance of photovoltaic curtain wall glass is passive, and the scribing process determines the transmittance of the curtain wall; in addition, the research on photovoltaic glass that is transparent like ordinary glass has also been greatly improved, although its power generation efficiency is much lower than that of conventional power generation glass. According to relevant reports, 1.5m 2 The glass generates 0.15-0.2kw·h of electricity per day.

[0003] Electrochromic devices are driven by voltage to achieve a light transmittance of 1%-65%; their products have been used on curtain wall glass; the driving voltage for device coloring is 0-3V, and the coloring current is 50-150mA; the device is colored for an average of 6 hours a day, and its power consumption is 0.002kw·h-0.003kw·h.

[0004] In order to avoid powering the electrochromic device separately, CN105978444A discloses combining photovoltaic power generation with electrochromic lighting, so that photovoltaic power generation powers the electrochromic lighting. The photovoltaic cell is a crystalline silicon cell, an amorphous silicon thin film cell, a copper indium gallium selenide cell or a cadmium telluride thin film cell.

[0005] However, the crystalline silicon cells, amorphous silicon thin film cells, copper indium gallium selenide cells or cadmium telluride thin film cells mentioned in the patent document are all opaque, which will affect the color-changing effect of the electrochromic device. Utility Model Content

[0006] In view of the problems existing in the background technology, an object of the present disclosure is to provide a curtain wall glass, which can avoid affecting the color change effect of the electrochromic when photovoltaic power generation is used to power the electrochromic.

[0007] Thus, a curtain wall glass is provided, which comprises a non-tempered FTO glass, a tempered FTO glass, a transparent photovoltaic layer, an electrochromic layer, and an EVA adhesive film; the non-tempered FTO glass and the tempered FTO glass face each other; the transparent photovoltaic layer is arranged on the side of the non-tempered FTO glass facing the tempered FTO glass, and the transparent photovoltaic layer is used for photovoltaic power generation; the electrochromic layer is arranged on the side of the tempered FTO glass facing the non-tempered FTO glass, and the electrochromic layer is used for being powered by the photovoltaic power generation of the transparent photovoltaic layer, and the color change and light transmittance are adjustable; the EVA adhesive film bonds the transparent photovoltaic layer and the electrochromic layer together to encapsulate the non-tempered FTO glass and the tempered FTO glass together.

[0008] Provided is a curtain wall glass, comprising non-tempered FTO glass, tempered FTO glass, a transparent photovoltaic layer, an electrochromic layer, a super spacer, and Ar gas; the non-tempered FTO glass and the tempered FTO glass face each other; the transparent photovoltaic layer is arranged on the side of the non-tempered FTO glass facing the tempered FTO glass, and the transparent photovoltaic layer is used for photovoltaic power generation; the electrochromic layer is arranged on the side of the tempered FTO glass facing the non-tempered FTO glass, and the electrochromic layer is used for being powered by the photovoltaic power generation of the transparent photovoltaic layer, and the color change and light transmittance are adjustable; the super spacer is formed into a ring, and the super spacer bonds the circumference of the transparent photovoltaic layer and the corresponding circumference of the electrochromic layer together to encapsulate the non-tempered FTO glass and the tempered FTO glass together; the Ar gas is encapsulated in a closed space surrounded by the super spacer, the transparent photovoltaic layer and the electrochromic layer.

[0009] The beneficial effects of the present disclosure are as follows: in the curtain wall glass of the present disclosure, the transparent photovoltaic layer and the electrochromic layer are combined to realize that the electrochromic layer is powered by photovoltaic power generation of the transparent photovoltaic layer. Compared with the crystalline silicon cell, amorphous silicon thin film cell, copper indium gallium selenide cell or cadmium telluride thin film cell mentioned in the patent literature of the background technology, in the above two examples of the curtain wall glass of the present disclosure, the use of an opaque photovoltaic cell to affect the color change effect of the electrochromic layer is avoided by setting a transparent photovoltaic layer, that is, it is possible to avoid affecting the color change effect of the electrochromic layer when photovoltaic power generation is used to power the electrochromic layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic structural diagram of an example of curtain wall glass according to the present disclosure.

[0011] Figure 2 is a schematic structural diagram of another example of curtain wall glass according to the present disclosure.

[0012] Figure 3 yes Figure 1 and Figure 2 A layout diagram of an example of a control circuit used in the two examples.

[0013] The reference numerals are described as follows:

[0014] 1Non-tempered FTO glass

[0015] 2Tempered FTO glass

[0016] 3. Transparent photovoltaic layer

[0017] 4Electrochromic layer

[0018] 5EVA film

[0019] 6 Super Spacer Bars

[0020] 7Ar gas

[0021] 8. Control circuit

[0022] 81 First Storage

[0023] 82 Second storage device

[0024] 83 The third storage device

[0025] 831 first negative terminal

[0026] 832 Second negative terminal

[0027] 84 control switch

[0028] 9 Home appliances DETAILED DESCRIPTION

[0029] The accompanying drawings show embodiments of the present disclosure, and it will be understood that the disclosed embodiments are merely examples of the present disclosure, and the present disclosure can be implemented in various forms. Therefore, the specific details disclosed herein should not be interpreted as limiting, but merely as the basis for the claims and as a representative basis for teaching ordinary technicians in the field to implement the present disclosure in various ways.

[0030] In the description of the present disclosure, unless otherwise specified, the terms “first”, “second”, etc. are only used for the purpose of description and component identification, and should not be understood as relative importance and mutual relationship.

[0031] Figure 1 It is a schematic structural diagram of an example of curtain wall glass according to the present disclosure. Figure 2 is a schematic structural diagram of another example of curtain wall glass according to the present disclosure.

[0032] exist Figure 1In the example shown, the curtain wall glass includes a non-tempered FTO glass 1, a tempered FTO glass 2, a transparent photovoltaic layer 3, an electrochromic layer 4, and an EVA adhesive film 5. The non-tempered FTO glass 1 and the tempered FTO glass 2 face each other; the transparent photovoltaic layer 3 is arranged on the side of the non-tempered FTO glass 1 facing the tempered FTO glass 2, and the transparent photovoltaic layer 3 is used for photovoltaic power generation; the electrochromic layer 4 is arranged on the side of the tempered FTO glass 2 facing the non-tempered FTO glass 1, and the electrochromic layer 4 is used to be powered by the photovoltaic power generation of the transparent photovoltaic layer 3, and the color change and light transmittance are adjustable; the EVA adhesive film 5 bonds the transparent photovoltaic layer 3 and the electrochromic layer 4 together to encapsulate the non-tempered FTO glass 1 and the tempered FTO glass 2 together.

[0033] exist Figure 2 In the example shown, the curtain wall glass includes a non-tempered FTO glass 1, a tempered FTO glass 2, a transparent photovoltaic layer 3, an electrochromic layer 4, a super spacer 6, and Ar gas 7. The non-tempered FTO glass 1 and the tempered FTO glass 2 face each other; the transparent photovoltaic layer 3 is arranged on the side of the non-tempered FTO glass 1 facing the tempered FTO glass 2, and the transparent photovoltaic layer 3 is used for photovoltaic power generation; the electrochromic layer 4 is arranged on the side of the tempered FTO glass 2 facing the non-tempered FTO glass 1, and the electrochromic layer 4 is used to be powered by the photovoltaic power generation of the transparent photovoltaic layer 3, and the color change and light transmittance are adjustable; the super spacer 6 is surrounded in a ring, and the super spacer 6 bonds the circumference of the transparent photovoltaic layer 3 and the corresponding circumference of the electrochromic layer 4 together to encapsulate the non-tempered FTO glass 1 and the tempered FTO glass 2 together; the Ar gas 7 is encapsulated in the closed space surrounded by the super spacer 6, the transparent photovoltaic layer 3 and the electrochromic layer 4.

[0034] In the above two examples of curtain wall glass disclosed in the present invention, the transparent photovoltaic layer 3 and the electrochromic layer 4 are combined to realize that the electrochromic layer 4 is powered by photovoltaic power generation of the transparent photovoltaic layer 3. Compared with the crystalline silicon cell, amorphous silicon thin film cell, copper indium gallium selenide cell or cadmium telluride thin film cell mentioned in the patent literature of the background technology, in the above two examples of curtain wall glass disclosed in the present invention, the transparent photovoltaic layer 3 is provided to avoid the influence of the color change effect of the electrochromic layer 4 by using an opaque photovoltaic cell, that is, it can avoid affecting the color change effect of the electrochromic layer when photovoltaic power generation is used to power the electrochromic layer.

[0035] In actual use, the installation of curtain wall glass can be arranged according to actual use requirements.

[0036] In one example, the thickness of the non-tempered FTO glass 1 is 3-5 mm; the thickness of the tempered FTO glass 2 is 3-5 mm.

[0037] In one example, the thickness of the transparent photovoltaic layer 3 is 3-5 μm; the thickness of the electrochromic layer 4 is 1-2 μm.

[0038] In one example, the transparent photovoltaic layer 3 is an organic semiconductor material coating; the electrochromic layer 4 is a WO3 film or a NiOx film. The organic semiconductor material coating can be any suitable organic semiconductor material, for example, the organic semiconductor material coating is a heterojunction composed of PBDTT-DPP and PCBM, PCDTBT and PC 70 Heterojunction composed of BM, heterojunction composed of PTB7-Th and ATT-2, and heterojunction composed of DTDCTB and C 70 Heterojunctions, etc.

[0039] like Figure 3 As shown, in one example, the curtain wall glass further includes a control circuit 8, which includes a first battery 81, a second battery 82 and a third battery 83; the cathode of the first battery 81 is connected to the anode of the transparent photovoltaic layer 3, the anode of the first battery 81 is connected to the anode of the electrochromic layer 4 and the cathode of the transparent photovoltaic layer 3, respectively, the first battery 81 is used to store the photovoltaic power generation energy of the transparent photovoltaic layer 3 and provide a forward voltage for coloring the electrochromic layer 4; the cathode of the second battery 82 is connected to the anode of the transparent photovoltaic layer 3, the anode of the second battery 82 is connected to the cathode of the transparent photovoltaic layer 3, the cathode of the second battery 82 is connected to the cathode of the transparent photovoltaic layer 3, the cathode of the second battery 82 is used to store Stores excess electrical energy generated by photovoltaic power generation of the transparent photovoltaic layer 3; the third battery 83 has a positive electrode, a first negative terminal 831, and a second negative terminal 832, the positive electrode of the third battery 83 is respectively connected to the negative electrode of the transparent photovoltaic layer 3 and the negative electrode of the electrochromic layer 4, the first negative terminal 831 of the third battery 83 is connected to the positive electrode of the transparent photovoltaic layer 3, and the second negative terminal 832 of the third battery 83 is connected to the positive electrode of the electrochromic layer 4 via a switch (marked as S5 in the figure), the third battery 83 is used to store the electrical energy generated by photovoltaic power generation of the transparent photovoltaic layer 3 and provide a reverse voltage to the electrochromic layer 4 when the switch is closed to fade the electrochromic layer 4.

[0040] Furthermore, if Figure 3 As shown, a plurality of control switches 84 are connected in series and in parallel between the positive electrode of the first battery 81 and the positive electrode of the electrochromic layer 4; the resistance values ​​of the plurality of control switches 84 are different from each other, and the plurality of control switches 84 are used to provide corresponding different forward voltages for coloring the electrochromic layer 4 when each group of control switches 84 is working (for example, in the figure, the corresponding group of control switches 84 is operated by switches S1, S2, S3, and S4). In this way, the electrochromic layer 4 can be colored to present different colors and transmittances. Furthermore, the resistance values ​​of the plurality of control switches 84 are integer multiples of the reference resistance, that is, in the figure, the resistance values ​​of the plurality of control switches 84 and the difference between them are integer multiples of the reference resistance R, thereby achieving step-by-step color change and step-by-step transmittance of the electrochromic layer 4. Although Figure 3Four groups of control switches 84 are shown in the figure, and the number of control switches 84 can be increased or decreased according to actual needs.

[0041] The above detailed description is used to describe multiple exemplary embodiments, but this document is not intended to be limited to the explicitly disclosed combinations. Therefore, unless otherwise stated, the various features disclosed herein can be combined together to form multiple additional combinations that are not shown for the sake of simplicity.

Claims

1. A curtain wall glass, characterized in that: Curtain wall glass includes non-tempered FTO glass, tempered FTO glass, transparent photovoltaic layer, electrochromic layer, and EVA film; The non-tempered FTO glass and the tempered FTO glass face each other; The transparent photovoltaic layer is arranged on the side of the non-tempered FTO glass facing the tempered FTO glass, and the transparent photovoltaic layer is used for photovoltaic power generation; The electrochromic layer is arranged on the side of the tempered FTO glass facing the non-tempered FTO glass, and the electrochromic layer is used to be powered by photovoltaic power generation of the transparent photovoltaic layer, and the color change and light transmittance are adjustable; The EVA adhesive film bonds the transparent photovoltaic layer and the electrochromic layer together to encapsulate the non-tempered FTO glass and the tempered FTO glass together.

2. A curtain wall glass, characterized in that: The curtain wall glass includes non-tempered FTO glass, tempered FTO glass, transparent photovoltaic layer, electrochromic layer, super spacer, and Ar gas; The non-tempered FTO glass and the tempered FTO glass face each other; The transparent photovoltaic layer is arranged on the side of the non-tempered FTO glass facing the tempered FTO glass, and the transparent photovoltaic layer is used for photovoltaic power generation; The electrochromic layer is arranged on the side of the tempered FTO glass facing the non-tempered FTO glass, and the electrochromic layer is used to be powered by photovoltaic power generation of the transparent photovoltaic layer, and the color change and light transmittance are adjustable; The super spacer is formed into a ring, and the super spacer bonds the circumference of the transparent photovoltaic layer and the corresponding circumference of the electrochromic layer together to encapsulate the non-tempered FTO glass and the tempered FTO glass together; Ar gas is encapsulated in a closed space surrounded by the super spacer, the transparent photovoltaic layer and the electrochromic layer.

3. The curtain wall glass according to claim 1 or 2, characterized in that: The thickness of non-tempered FTO glass is 3-5mm; The thickness of tempered FTO glass is 3-5mm.

4. The curtain wall glass according to claim 1 or 2, characterized in that: The thickness of the transparent photovoltaic layer is 3-5 μm; The thickness of the electrochromic layer is 1-2 μm.

5. The curtain wall glass according to claim 1 or 2, characterized in that: The transparent photovoltaic layer is a coating of organic semiconductor material; The electrochromic layer is a WO3 thin film or a NiOx thin film.

6. The curtain wall glass according to claim 1 or 2, characterized in that: The curtain wall glass also includes a control circuit. The control circuit includes a first electrical storage device, a second electrical storage device and a third electrical storage device; The negative electrode of the first battery storage device is connected to the positive electrode of the transparent photovoltaic layer, and the positive electrode of the first battery storage device is respectively connected to the positive electrode of the electrochromic layer and the negative electrode of the transparent photovoltaic layer. The first battery storage device is used to store the photovoltaic power generation energy of the transparent photovoltaic layer and provide a forward voltage for coloring the electrochromic layer. The negative electrode of the second storage device is connected to the positive electrode of the transparent photovoltaic layer, the positive electrode of the second storage device is connected to the negative electrode of the transparent photovoltaic layer, and the second storage device is used to store excess electrical energy generated by photovoltaic power generation of the transparent photovoltaic layer; The third battery storage device has a positive electrode, a first negative terminal, and a second negative terminal. The positive electrode of the third battery storage device is respectively connected to the negative electrode of the transparent photovoltaic layer and the negative electrode of the electrochromic layer. The first negative terminal of the third battery storage device is connected to the positive electrode of the transparent photovoltaic layer. The second negative terminal of the third battery storage device is connected to the positive electrode of the electrochromic layer via a switch. The third battery storage device is used to store the electrical energy generated by photovoltaic power generation of the transparent photovoltaic layer and to provide a reverse voltage to the electrochromic layer when the switch is closed to fade the electrochromic layer.

7. The curtain wall glass according to claim 6, characterized in that: A plurality of control switches connected in parallel are connected in series between the positive electrode of the first electrical storage device and the positive electrode of the electrochromic layer; The resistance values ​​of the plurality of control switches are different from each other, and the plurality of control switches are used to provide corresponding different forward voltages for coloring the electrochromic layer when each control switch group is in operation.

8. The curtain wall glass according to claim 7, characterized in that: The resistance values ​​of the plurality of control switches are integer multiples of the reference resistance.

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