Efficient thermal management coated laminated glass for vehicle

Abstract

The utility model discloses laminated glass. The laminated glass comprises a first glass layer, a PVB (Polyvinyl Butyral) layer and a second glass layer which are sequentially laminated, an online high-reflection Tio2 film is arranged on the face, away from the PVB layer, of the first glass layer, a silver-based coating film is arranged on the face, facing the PVB layer, of the first glass layer, and an online or offline low-e coating film is arranged on the face, away from the PVB layer, of the second glass layer. The on-line high-reflection Tio2 film and the silver-based coating film arranged on the first glass layer of the laminated glass can directly filter out a large part of visible light and infrared light, so that external heat entering the glass is effectively reduced, and a driver and passengers in a vehicle feel milder and more comfortable for strong sunlight; when seen from outside to inside, the reflective film has high reflectivity, so that the state in the vehicle cannot be seen clearly, the privacy of passengers in the vehicle can be well protected, and a one-way visual effect is achieved; on-line or off-line low-e coating further reduces radiation, external heat entering the glass is reduced, energy entering the glass is very little, the temperature rise in the automobile is slow, the use amount of air conditioners is reduced, and electric energy is effectively saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to glass technical field, concretely relates to a kind of high-efficiency thermal management coated interlayer glass for vehicle. BACKGROUND

[0002] With the development of electric vehicle technology, the sun protection in the vehicle is more and more concerned by the driver and passenger, because the battery pack at the bottom of the vehicle raises the floor space, thereby compressing the passenger head space, therefore, the sunshade curtain design is generally cancelled in new energy vehicle, thereby leaving more interior space, but without sunshade curtain, the sun protection problem in summer becomes the focus of attention of car consumers.

[0003] TL represents the ability of light to penetrate the glass, that is, the visible light transmittance. When we talk about TE solar direct transmittance, we use the term TDS. RDS describes the ratio of solar energy reflected, that is, the solar reflectance. In addition, TTS, that is, the total solar transmittance, is not simply the sum of several ratios, but takes into account TDS and the energy reflected back after absorption by the glass. In addition, ADS represents the absorption rate of solar energy by the glass. There is a relationship between these ratios: the sum of TDS, RDS and ADS is equal to 1. These parameters provide important indicators for us to evaluate the performance of glass in solar energy utilization.

[0004] People have higher requirements for new energy sunroof glass: lower TTS is achieved without reducing TL.

[0005] The commonly used automotive interlayer glass adopts the following structure:

[0006] 1. Ordinary interlayer glass, glass surface stress < 24Mpa. 2.1mm outer sheet (2 faces of outer sheet are provided with double silver or triple silver coating) + 0.76mm PVB (including ordinary transparent PVB, soundproof PVB, infrared reflective PVB, ultraviolet absorbing PVB or gray privacy PVB) + 2.1mm inner sheet glass (low-e low-emission film layer can be added), this kind of glass can manage a part of energy entering the vehicle, but still has more than 13% TTS energy entering the vehicle, and the overall strength of the glass is weak, easy to crack and break.

[0007] 2. Semi-tempered interlayer glass, glass surface stress ≥ 24Mpa. 2.1mm outer sheet (2 faces of outer sheet are provided with double silver or triple silver coating) + 0.76mm PVB (including ordinary transparent PVB, soundproof PVB, infrared reflective PVB, ultraviolet absorbing PVB or gray privacy PVB) + 2.1mm inner sheet glass (low-e low-emission film layer can be added), this kind of glass can manage a part of energy entering the vehicle, but still has more than 13% TTS energy entering the vehicle.

[0008] 3. Laminated light control glass, glass surface stress ≥ 24Mpa. 2.1mm outer sheet (2 faces of the outer sheet are double silver or triple silver coated) + 0.76mm PVB (including ordinary transparent PVB, sound insulation PVB, infrared reflective PVB, ultraviolet absorbing PVB or gray privacy PVB) + light control film + 0.76mm or 0.38mm PVB + 2.1mm inner sheet glass (low-e low radiation film layer can be added), such glass can adjust the light intensity transmitted according to the intensity of external sunlight, but still has more than 13% TTS energy entering the vehicle.

[0009] Therefore, it is necessary to design a better laminated glass to reduce TTS. Invention content

[0010] In view of the above problems existing in the prior art, a high-efficiency thermal management coated laminated glass for vehicles is provided.

[0011] The specific technical solutions are as follows:

[0012] A high-efficiency thermal management coated laminated glass for vehicles mainly comprises: a first glass layer, a PVB layer and a second glass layer which are stacked in sequence.

[0013] One side of the first glass layer away from the PVB layer is provided with an online high-reflective Tio2 film, and one side of the first glass layer facing the PVB layer is provided with a silver-based coating film. One side of the second glass layer away from the PVB layer is provided with an online or offline low-e coating film.

[0014] In the high-efficiency thermal management coated laminated glass for vehicles, the first glass layer is made of sodium calcium silicate glass.

[0015] In the high-efficiency thermal management coated laminated glass for vehicles, the thickness of the first glass layer is 1.6mm-4mm.

[0016] In the high-efficiency thermal management coated laminated glass for vehicles, the second glass layer is made of sodium calcium silicate glass.

[0017] In the high-efficiency thermal management coated laminated glass for vehicles, the thickness of the second glass layer is 0.7mm-4mm.

[0018] In the high-efficiency thermal management coated laminated glass for vehicles, the silver-based coating film can be a double silver coating film, a triple silver coating film or a 4 silver coating film.

[0019] In the high-efficiency thermal management coated laminated glass for vehicles, the PVB layer is a single-layer PVB or a multi-layer PVB.

[0020] The vehicle high-efficiency thermal management coated laminated glass has the following characteristics: the PVB layer comprises two layers, and a light-adjusting film is arranged between the two PVB layers.

[0021] The technical scheme has the following beneficial effects:

[0022] The vehicle high-efficiency thermal management coated laminated glass has the following characteristics: the PVB layer comprises two layers, and a light-adjusting film is arranged between the two PVB layers. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The vehicle high-efficiency thermal management coated laminated glass has the following characteristics: the PVB layer comprises two layers, and a light-adjusting film is arranged between the two PVB layers.

[0024] In the drawings: 1, first glass layer; 2, second glass layer; 3, PVB layer; 4, on-line high-reflectivity Tio2 film; 5, silver-based coating film; 6, on-line or off-line low-e coating film. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail by combining with the drawings. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0026] In this paper, the serial numbers of components, such as "first", "second", etc., are only used to distinguish the described objects, and have no technical meaning. Unless otherwise specified, the "connection" and "coupling" in this application include direct and indirect connection (coupling). In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like is based on the orientation or position relationship shown in the drawings, and is only used to facilitate the description of the utility model and simplify the description, and therefore cannot be understood as indicating or implying that the devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0027] In the utility model, unless another definite provision and limitation, first feature is on second feature "on" or "under" first and second feature can be direct contact, or first and second feature is indirectly contacted through intermediate medium.Moreover, first feature is on second feature "on", "above" and "on" can be first feature is directly above or obliquely above second feature, or just indicate that the horizontal height of first feature is higher than second feature.

[0028] Please refer to Figure 1 The utility model discloses a kind of vehicle high-efficiency thermal management coated laminated glass, comprising: first glass layer 1, PVB layer 3 and second glass layer 2 are sequentially stacked;

[0029] The one side of the first glass layer 1 away from the PVB layer 3 is provided with an online high-reflective Tio2 film 4, the one side of the first glass layer 1 towards the PVB layer 3 is provided with a silver-based coating 5, and the one side of the second glass layer 2 away from the PVB layer 3 is provided with an online or offline low-e coating 6.

[0030] Optionally, the material of the first glass layer 1 is sodium calcium silicate glass.

[0031] Optionally, the thickness of the first glass layer 1 is 1.6mm-4mm.

[0032] Among them, the first glass layer 1 is first coated with an online high-reflective Tio2 film 4, then cut, printed and pre-burned, and then coated with a silver-based coating, and the edges or antenna transmission area of the first glass layer 1 are then removed from the coating, with a width of 8-10mm; the antenna area can be covered with a mask, or can be removed from the coating by laser or a combination of a cover and laser. The visible light reflectance of the online high-reflective Tio2 film 4 and the silver-based coating 5 is greater than 30%.

[0033] Among them, Low-E glass, which is the abbreviation of Low Emissivity Glass, is a kind of coated glass. This kind of glass not only has high visible light transmittance, but also has strong infrared blocking characteristics, and can play the dual role of natural lighting and heat insulation and energy saving. After use, it can effectively reduce the loss of indoor heat in winter, and can also block the secondary radiation of outdoor objects heated by sunlight in summer, thereby achieving the purpose of energy saving and consumption reduction. At the same time, Low-E glass has high transmittance in the visible light band, which can make indoor space make more use of natural lighting, cater to the psychological desire of modern urban people to return to nature, and save lighting electricity.

[0034] Low-E glass is divided into "on-line Low-E glass" and "off-line Low-E glass" according to the production process. "Line" refers to the float glass production line, and on-line coating means that the glass coating is completed on the float line; off-line coating means that the glass leaves the float line and completes the coating in another place (place). Off-line coating requires another coating production line, commonly known as "vacuum cathode magnetron sputtering" coating line.

[0035] Among them, the silver film can improve the optical performance of the glass. Since the silver film has good reflection performance, the glass coated with silver can reflect part of the light.

[0036] Optionally, the first glass layer 1 can be white glass or colored glass.

[0037] Optionally, the first glass layer 1 can be white glass or colored glass.

[0038] Among them, super white glass (abbreviation white glass) is a kind of super transparent low iron glass, also known as low iron glass, high transparent glass. It is a new type of high-grade glass variety with high quality and multiple functions, with light transmittance of more than 91.5%, and has the characteristics of crystal clear and high-grade elegant, known as "crystal prince" of glass family. Colored glass (colored glass), also known as heat absorbing glass, refers to glass that presents different colors after adding colored glass colorants. Colored glass can absorb visible light of the sun and reduce the intensity of sunlight. The glass itself temperature increases when absorbing sunlight, which is easy to produce thermal expansion and cracking.

[0039] Optionally, the material of the second glass layer 2 is sodium calcium silicate glass.

[0040] Optionally, the thickness of the second glass layer 2 is 0.7mm-4mm.

[0041] Optionally, the silver-based coating film 5 can be a double-silver coating film, a triple-silver coating film or a four-silver coating film.

[0042] Optionally, the off-line steel ITO film 6 is an on-line or off-line low-e coating film. The low-e emissivity of the second glass layer 2 away from the PVB layer 3 is less than 0.25.

[0043] Optionally, the PVB layer 3 is single-layer PVB or multi-layer.

[0044] Optionally, in one embodiment, the PVB layer 3 includes two layers, and a light adjusting film (not shown in the figure) is further arranged between the two PVB layers 3.

[0045] The high-reflection characteristic film layer, for example, the online high-reflection Tio2 film 4 and the silver-based plating film 5, provided on the first glass layer can directly filter a large part of visible light and infrared light, effectively reduces the external heat into the glass, and the driver and passenger in the vehicle feel more comfortable to the strong sunlight; from the outside to the inside, the state in the vehicle cannot be seen due to the high reflectivity, the privacy of the passengers in the vehicle can be well protected, and the one-way visual effect is achieved; the online or offline low-e plating film further reduces radiation and reduces the external heat into the glass, the energy entering is very small, the temperature in the vehicle rises slowly, the air conditioner usage is reduced, and the electric energy is effectively saved.

[0046] The technical features of the above embodiments can be combined in any manner, and to make the description concise, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not contradict, they should be considered as the scope of the present disclosure.

[0047] The above-described embodiments only express several implementation manners of the present application, the description is relatively specific and detailed, but it should not be understood as the limitation of the patent scope of the present application. It should be pointed out that, for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A high efficiency thermal management coated laminated glazing for vehicles, characterized in that, The application relates to a laminated glass, which comprises: a first glass layer, a PVB layer and a second glass layer which are sequentially stacked; one side of the first glass layer away from the PVB layer is provided with an on-line high-reflective TiO2 film, one side of the first glass layer towards the PVB layer is provided with a silver-based plating film, and one side of the second glass layer away from the PVB layer is provided with an on-line or off-line low-e plating film. The first glass layer adopts sodium-calcium silicate glass. The thickness of the first glass layer is 1.6mm-4mm.

2. The high efficiency thermal management coated laminated glazing for automotive applications according to claim 1, characterized in that, The second glass layer adopts sodium-calcium silicate glass.

3. The high efficiency thermal management coated laminated glazing for automotive applications according to claim 2, characterized in that, The thickness of the second glass layer is 0.7mm-4mm.

4. The high efficiency thermal management coated glazing for automotive applications of claim 1, wherein, The silver-based plating film can be a double-silver plating film, a triple-silver plating film or a 4-silver plating film.

5. The high efficiency thermal management coated laminated glazing for automotive applications according to claim 4, characterized in that, The PVB layer is single-layer PVB or multi-layer PVB.

6. The high efficiency thermal management coated glazing for automotive applications according to any one of claims 1 to 5, characterized in that, The PVB layer comprises two layers, and a light-adjusting film is further arranged between the two PVB layers.

7. The high efficiency thermal management coated glazing for automotive applications according to any one of claims 1 to 5, characterized in that, ​ 8. The high efficiency thermal management coated glazing for automotive applications according to any one of claims 1 to 5, characterized in that, ​

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