Vehicle window glass and vehicle

Abstract

The application provides a vehicle window glass and a vehicle. The vehicle window glass comprises a laminated glass, a transparent conductive layer and a transparent heat conduction film. The laminated glass comprises an outer glass plate, an intermediate layer and an inner glass plate. The outer glass plate comprises a first surface and a second surface. The inner glass plate comprises a third surface and a fourth surface. The intermediate layer is arranged between the outer glass plate and the inner glass plate. The second surface faces the intermediate layer. The third surface faces the intermediate layer. The transparent conductive layer is arranged on the second surface, the third surface or the fourth surface. The vehicle window glass is provided with an information collection area. The transparent conductive layer in the information collection area is at least partially removed. At least one of the first surface, the second surface, the third surface or the fourth surface is provided with the transparent heat conduction film. The projection of the transparent heat conduction film along the thickness direction of the vehicle window glass covers the information collection area and overlaps with the projection of the transparent conductive layer. The application can reduce the hot spots around the information collection area and improve the safety performance of the vehicle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of glass products, in particular to a vehicle window glass and a vehicle. BACKGROUND

[0002] At present, in order to avoid that the indoor and outdoor temperature difference of a vehicle is too large to form water mist or frost on the vehicle window glass, a transparent conductive layer is usually arranged on the vehicle window glass. The transparent conductive layer is heated by being electrified, so as to achieve the purpose of defogging or defrosting the vehicle window glass. In addition, an information collection device is generally installed in the vehicle to assist the automatic driving mode of the vehicle. The information collection device is usually installed on the inner side of the vehicle window glass. The vehicle window glass is provided with an information collection area for allowing the signal of the information collection device to pass through. In the prior art, in order to avoid that the transparent conductive layer interferes with or shields the signal of the information collection device, the transparent conductive layer of the information collection area is usually removed. However, when the transparent conductive layer is heated, a large amount of current will gather around the information collection area, thereby generating a hot spot around the information collection area, which will cause the temperature around the information collection area to be too high, and even cause the vehicle window glass to be broken in severe cases, thereby reducing the safety performance of the vehicle. SUMMARY

[0003] The purpose of the present application is to provide a vehicle window glass and a vehicle, which can reduce the hot spot around the information collection area while improving the central temperature of the information collection area, and improve the safety performance of the vehicle.

[0004] A first aspect of the present application provides a vehicle window glass, comprising a laminated glass, a transparent conductive layer and a transparent heat-conducting film, the laminated glass comprising an outer glass sheet, an intermediate layer and an inner glass sheet, the outer glass sheet comprising a first surface and a second surface arranged away from the first surface, the inner glass sheet comprising a third surface and a fourth surface arranged away from the third surface, the intermediate layer being arranged between the outer glass sheet and the inner glass sheet, the second surface facing the intermediate layer, and the third surface facing the intermediate layer;

[0005] The transparent conductive layer is arranged on the second surface, the third surface or the fourth surface, the vehicle window glass is provided with an information collection area, and the transparent conductive layer in the information collection area is at least partially removed;

[0006] At least one of the first surface, the second surface, the third surface or the fourth surface is provided with the transparent heat-conducting film, the projection of the transparent heat-conducting film along the thickness direction of the vehicle window glass covers the information collection area, and overlaps with the projection of the transparent conductive layer.

[0007] It can be understood that by at least partially removing the transparent conductive layer in the information collection area, the interference or shielding of the transparent conductive layer to the signal received / transmitted by the information collection device can be reduced. By providing the transparent heat-conducting film in the information collection area of the vehicle window glass, the transparent heat-conducting film can improve the thermal conductivity of the information collection area, thereby accelerating the heat conduction from the periphery of the information collection area to the information collection area; and the projection of the transparent heat-conducting film along the thickness direction of the vehicle window glass overlaps with the projection of the transparent conductive layer, and the heat generated after the transparent conductive layer is powered on can be conducted to the transparent heat-conducting film and conducted to the information collection area by the transparent heat-conducting film, so as to reduce or even eliminate the hot spots generated around the information collection area after the transparent conductive layer is powered on, thereby avoiding the breakage of the vehicle window glass due to the large local heat. In addition, the transparent heat-conducting film can also play a role in heating the information collection area, which is conducive to defrosting, defrosting or deicing of the information collection area.

[0008] In a possible implementation, the transparent heat-conducting film is in direct contact with the transparent conductive layer.

[0009] In a possible implementation, the projection of the transparent heat-conducting film along the thickness direction of the vehicle window glass overlaps with the projection of the transparent conductive layer outside the information collection area.

[0010] In a possible implementation, the number of the transparent heat-conducting films is two.

[0011] One of the transparent heat-conducting films is arranged on the second surface, and the other transparent heat-conducting film is arranged on the third surface.

[0012] Alternatively, one of the transparent heat-conducting films is arranged on the second surface, and the other transparent heat-conducting film is arranged on the fourth surface.

[0013] Alternatively, one of the transparent heat-conducting films is arranged on the third surface, and the other transparent heat-conducting film is arranged on the fourth surface.

[0014] In a possible implementation, the resistivity of the transparent heat-conducting film is ρ≥1000Ω·m, or ρ≥10000Ω·m, or ρ≥100000Ω·m.

[0015] In a possible implementation, the thermal conductivity of the transparent heat-conducting film is λ≥1.5W / (m·K), or λ≥2W / (m·K), or λ≥5W / (m·K), or λ≥10W / (m·K).

[0016] In a possible implementation, the thermal conductivity of the transparent heat-conducting film is λ≥15W / (m·K), or λ≥20W / (m·K), or λ≥30W / (m·K).

[0017] In one possible implementation, the vehicle window glass is provided with a film removal window, in which at least 95% of the transparent conductive layer is removed, the area of ​​the film removal window is greater than or equal to the area of ​​the information acquisition area, and the outline of the film removal window is 0-10 mm larger than the outline of the information acquisition area, or the outline of the film removal window is 1 mm-5 mm larger than the outline of the information acquisition area.

[0018] In one possible implementation, the thermal conductivity of the outer glass plate and / or the inner glass plate is 0.7 W / (m·K) to 1.3 W / (m·K), or the thermal conductivity of the outer glass plate and / or the inner glass plate is 0.9 W / (m·K) to 1.1 W / (m·K).

[0019] In one possible implementation, the information acquisition area covered by the transparent thermally conductive film has a transmittance of at least 60% (TL) for visible light with wavelengths of 440 nm to 700 nm incident at a 65° incident angle. (440-700) ;

[0020] And / or, the transmittance TL of the information acquisition area covered by the transparent thermally conductive film for red light with a wavelength of 600nm to 700nm incident at an incident angle of 65°. (600-700) The transmittance TL of the information acquisition area covered by the transparent thermally conductive film for visible light with wavelengths of 440nm to 700nm incident at an incident angle of 65°. (440-700) The ratio between them is greater than or equal to 0.8;

[0021] And / or, the ratio of the transmittance Tp of the information acquisition area covered by the transparent thermal conductive film to P-polarized light with wavelengths of 440nm to 700nm incident at a 65° incident angle to the transmittance Ts of the information acquisition area covered by the transparent thermal conductive film to S-polarized light with wavelengths of 440nm to 700nm incident at a 65° incident angle is greater than or equal to 1.45.

[0022] In one possible implementation, the transparent thermally conductive film is made of a polymer matrix, nanofillers, and additives;

[0023] The polymer matrix is ​​selected from at least one of polyhexamethylene adipamide, nanocellulose, poly(p-phenylenebenzodioxazole) fiber, polyrotaxane, polyimide, and polyvinylpyrrolidone.

[0024] The nanofiller is selected from at least one of boron nitride nanosheets, graphene nanosheets, and carbon nanotubes;

[0025] The additive is selected from at least one of dispersants, leveling agents, and reducing solutions.

[0026] In a possible implementation, the thermal conductivity of the carbon nanotube is 3000 W / (m·K) to 3500 W / (m·K), the thermal conductivity of the graphene nanosheet is 3000 W / (m·K) to 5300 W / (m·K), and the thermal conductivity of the boron nitride nanosheet is 1000 W / (m·K) to 2000 W / (m·K) at room temperature.

[0027] In a possible implementation, the material of the transparent heat-conducting film is a transparent insulating heat-conducting adhesive, and the thermal conductivity of the transparent insulating heat-conducting adhesive is 2 W / (m·K) to 12 W / mK.

[0028] In a possible implementation, the inner glass plate is provided with a through hole penetrating through the third surface and the fourth surface, the contour of the through hole is greater than or equal to the contour of the information collection area, and a projection of the transparent heat-conducting film along the thickness direction of the vehicle window glass covers the contour of the through hole.

[0029] In a possible implementation, the vehicle window glass further includes a first bus bar and a second bus bar arranged between the second surface and the third surface, and the first bus bar and the second bus bar are in direct electrical contact with the transparent conductive layer.

[0030] In a possible implementation, a 36V voltage is applied to the first bus bar and the second bus bar, the vehicle window glass is heated for 20 minutes at room temperature 23℃, and the difference between the maximum temperature of the fourth surface of the vehicle window glass with the transparent conductive layer and the center temperature of the information collection area covered by the transparent heat-conducting film is less than or equal to 46℃, or the difference between the maximum temperature of the fourth surface of the vehicle window glass with the transparent conductive layer and the center temperature of the information collection area covered by the transparent heat-conducting film is less than or equal to 40℃, or the difference between the maximum temperature of the fourth surface of the vehicle window glass with the transparent conductive layer and the center temperature of the information collection area covered by the transparent heat-conducting film is less than or equal to 35℃.

[0031] The second aspect of the present application provides a vehicle, including a vehicle body, an information collection device, and a vehicle window glass as described above, the vehicle window glass is connected to the vehicle body, the information collection device is arranged inside the vehicle, and the signal received and / or emitted by the information collection device passes through the information collection area and the transparent heat-conducting film.

[0032] The application has the beneficial effect that by removing the transparent conductive layer at least partially in the information collection area, the interference or shielding of the transparent conductive layer to the signal received / transmitted by the information collection device can be reduced. By arranging the transparent heat-conducting film in the information collection area of the vehicle window glass, and the projection of the transparent heat-conducting film along the thickness direction of the vehicle window glass overlaps with the projection of the transparent conductive layer, the heat generated after the transparent conductive layer is powered on can be conducted to the transparent heat-conducting film and conducted to the information collection area by the transparent heat-conducting film, so that the hot spots generated around the information collection area after the transparent conductive layer is powered on can be reduced or even eliminated, avoiding the breakage of the vehicle window glass due to the large local heat. In addition, the information collection area can also be heated, which is beneficial to defogging, defrosting or deicing of the information collection area. Since the transparent heat-conducting film has electrical insulation, the transparent heat-conducting film will not shunt the transparent conductive layer, so as to ensure the heating power density of the transparent area. That is to say, while ensuring the heating effect of the transparent area, the heating effect of the information collection area is also achieved, and the hot spots around the information collection area are also reduced or even eliminated, thereby ensuring the safety performance of the vehicle window glass. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 A schematic diagram of current distribution of the transparent conductive layer of the vehicle window glass in the prior art after being powered on;

[0034] Figure 2 A schematic diagram of the structure of the vehicle provided by the embodiment of the application;

[0035] Figure 3 A schematic diagram of the structure of the first embodiment of the vehicle window glass provided by the embodiment of the application, which shows the first implementation of the positional relationship between the transparent conductive layer and the transparent heat-conducting film;

[0036] Figure 4 A schematic diagram of the structure of the first embodiment of the vehicle window glass provided by the embodiment of the application, which shows the first implementation of the positional relationship between the transparent conductive layer and the transparent heat-conducting film; Figure 3 A schematic diagram of the structure of the first embodiment of the vehicle window glass provided by the embodiment of the application, which shows the first implementation of the positional relationship between the transparent conductive layer and the transparent heat-conducting film;

[0037] Figure 5 A schematic diagram of the structure of the first embodiment of the vehicle window glass provided by the embodiment of the application, which shows the first implementation of the positional relationship between the transparent conductive layer and the transparent heat-conducting film; Figure 3 A schematic diagram of the structure of the first embodiment of the vehicle window glass provided by the embodiment of the application, which shows the first implementation of the positional relationship between the transparent conductive layer and the transparent heat-conducting film;

[0038] Figure 6 A schematic diagram of the structure of the first embodiment of the vehicle window glass provided by the embodiment of the application, which shows the first implementation of the positional relationship between the transparent conductive layer and the transparent heat-conducting film; Figure 3 A schematic diagram of the structure of the first embodiment of the vehicle window glass provided by the embodiment of the application, which shows the first implementation of the positional relationship between the transparent conductive layer and the transparent heat-conducting film;

[0039] Figure 7 A schematic diagram of the structure of the first embodiment of the vehicle window glass provided by the embodiment of the application, which shows the first implementation of the positional relationship between the transparent conductive layer and the transparent heat-conducting film; Figure 3 A schematic diagram of the structure of the first embodiment of the vehicle window glass provided by the embodiment of the application, which shows the first implementation of the positional relationship between the transparent conductive layer and the transparent heat-conducting film;

[0040] Figure 8 A schematic diagram of the structure of the first embodiment of the vehicle window glass provided by the embodiment of the application, which shows the first implementation of the positional relationship between the transparent conductive layer and the transparent heat-conducting film; Figure 3Structure diagram of a fifth embodiment of the positional relationship between the transparent conductive layer and the transparent heat-conductive film.

[0041] Figure 9 For Figure 3 Structure diagram of a sixth embodiment of the positional relationship between the transparent conductive layer and the transparent heat-conductive film.

[0042] Figure 10 Structure diagram of a second embodiment of the vehicle window glass provided by the present application, which shows a first embodiment of the positional relationship between the transparent conductive layer and the transparent heat-conductive film.

[0043] Figure 11 For Figure 10 Second embodiment of the positional relationship between the transparent conductive layer and the transparent heat-conductive film.

[0044] Explanation of reference signs:

[0045] 300, 100-vehicle window glass, 310, 31-first busbar, 320, 32-second busbar, A, S1-information collection area, B, S2-non-information collection area, S3-film-excluding window, 1000-vehicle, 200-vehicle body, 10-laminated glass, 20-transparent conductive layer, 40-transparent heat-conductive film, 11-outer glass pane, 12-intermediate layer, 13-inner glass pane, 111-first surface, 112-second surface, 131-third surface, 132-fourth surface, S21-transparent area, S22-shielding area, 133-through hole. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0047] Please refer to Figure 1In the prior art, a transparent conductive layer is usually arranged on the surface of the vehicle window glass 300, and a first busbar 310 and a second busbar 320 are arranged on opposite sides of the transparent conductive layer. By energizing the first busbar 310 and the second busbar 320, current flows in the transparent conductive layer, and the transparent conductive layer generates heat, thereby heating the vehicle window glass 300. In order to avoid the transparent conductive layer of the vehicle window glass 300 interfering with or shielding the signals of the information acquisition device inside the vehicle, the transparent conductive layer of the information acquisition area A is usually removed, and only the transparent conductive layer of the non-information acquisition area B is retained. In this way, when the transparent conductive layer is heated, the current on the transparent conductive layer will avoid the information acquisition area A and flow along the edge of the information acquisition area A, thereby causing a large amount of current to gather locally around the periphery of the information acquisition area A and generating a hot spot around the periphery of the information acquisition area A, causing the temperature around the periphery of the information acquisition area A to be too high, and in severe cases even causing the vehicle window glass 300 to break.

[0048] For a conventional transparent conductive layer, when the energizing voltage of the transparent conductive layer is 12-14V low voltage, after heating for 10-20 minutes, the temperature around the periphery of the information acquisition area A can reach 60-80℃. When the energizing voltage of the transparent conductive layer is 36-48V high voltage, after heating for 5-15 minutes, the temperature around the periphery of the information acquisition area A can reach 70-120℃. As the heating voltage increases or the heating time extends, the temperature around the periphery of the information acquisition area A can reach even higher, and in severe cases even cause the vehicle window glass 300 to break, thereby reducing the safety performance of the vehicle.

[0049] Based on this, the present application provides a vehicle window glass 100. The application of the vehicle window glass 100 of the present application to the vehicle 1000 can reduce the hot spot around the periphery of the information acquisition area S1 while increasing the central temperature of the information acquisition area S1, thereby improving the safety performance of the vehicle 1000.

[0050] Please refer to Figure 2 The vehicle 1000 includes a vehicle window glass 100, a vehicle body 200, an information acquisition device (not shown in the figure), and a vehicle-mounted power supply (not shown in the figure). The vehicle window glass 100 is connected to the vehicle body 200. The vehicle window glass 100 is installed in an opening of the vehicle body 200. The vehicle window glass 100 has an outer surface and an inner surface, the outer surface faces the outside of the vehicle 1000, and the inner surface faces the inside of the vehicle 1000. The information acquisition device and the vehicle-mounted power supply are arranged inside the vehicle 1000. The information acquisition device faces the vehicle window glass 100 and can process the driving environment outside the vehicle 1000 into image data. The vehicle-mounted power supply can supply power to the information acquisition device and the like.

[0051] It should be noted that the vehicle 1000 described in the present application can be, but is not limited to, a car, a train, a rail transit, and the like. The vehicle window glass 100 can be, but is not limited to, a front windshield, a side window glass, a rear windshield, a sunroof glass, and the like of the vehicle 1000. The information collection device can be, but is not limited to, a visible light camera, a near-infrared camera, a thermal imager, a laser radar, and the like. The embodiments of the present application are described by taking the vehicle 1000 as a car, the vehicle window glass 100 as a front windshield, and the information collection device as a visible light camera.

[0052] Please refer to Figure 3 The present application provides a first embodiment of the vehicle window glass 100. In the present embodiment, the vehicle window glass 100 includes a laminated glass 10, a transparent conductive layer 20, a first busbar 31, a second busbar 32, and a transparent heat-conductive film 40. The transparent conductive layer 20, the first busbar 31, the second busbar 32, and the transparent heat-conductive film 40 are all disposed on the laminated glass 10.

[0053] For ease of description, it is defined that Figure 3 In the present embodiment, the width direction of the vehicle window glass 100 is the X-axis direction, the height direction of the vehicle window glass 100 is the Y-axis direction, and the thickness direction of the vehicle window glass 100 is the Z-axis direction. The X-axis direction, the Y-axis direction, and the Z-axis direction are perpendicular to each other. In the present application, the terms of "top" and "bottom" are defined as "top" toward the positive direction of the Y-axis and "bottom" toward the negative direction of the Y-axis. The similar descriptions in the following can be understood in the same way.

[0054] The laminated glass 10 includes an outer glass sheet 11, an interlayer 12, and an inner glass sheet 13. The interlayer 12 is disposed between the outer glass sheet 11 and the inner glass sheet 13. The outer glass sheet 11 includes a first surface 111 and a second surface 112 disposed oppositely. The first surface 111 faces the outside of the vehicle 1000, and the first surface 111 serves as the outer surface of the vehicle window glass 100. The second surface 112 faces the interlayer 12. The inner glass sheet 13 includes a third surface 131 and a fourth surface 132 disposed oppositely. The third surface 131 faces the interlayer 12, and the fourth surface 132 faces the inside of the vehicle 1000, and the fourth surface 132 serves as the inner surface of the vehicle window glass 100. The interlayer 12 connects the second surface 112 and the third surface 131. In the present embodiment, the laminated glass 10 has a curved shape. The outer glass sheet 11 and the inner glass sheet 13 are both subjected to a high-temperature bending forming process of at least 500 DEG C.

[0055] In other embodiments, the laminated glass 10 can also have a flat plate shape. The shape of the laminated glass 10 is not limited to the shape described above, and can be any shape that meets the use requirements of the vehicle window glass 100. The present application does not strictly limit the shape of the laminated glass 10.

[0056] In this embodiment, the outer glass sheet 11 is transparent or tinted glass. Preferably, the outer glass sheet 11 is selected from transparent glass (standard white glass) or extra-clear glass (extra-white glass). The outer glass sheet 11 has a visible light transmittance greater than or equal to 80%. The outer glass sheet 11 has a thickness in the range of 1.6 mm to 5.0 mm. Exemplarily, the thickness of the outer glass sheet 11 can be, but is not limited to, 1.6 mm, or 1.8 mm, or 2.1 mm, or 2.6 mm, or 3.2 mm, or 3.5 mm, or 4.0 mm, or 4.5 mm, or 5.0 mm, or other values in the range of 1.6 mm to 5.0 mm. Exemplarily, the thickness of the outer glass sheet 11 is 1.8 mm; or, the thickness of the outer glass sheet 11 is 2.1 mm.

[0057] The outer glass sheet 11 has an electrical resistivity greater than or equal to 10 10 Ω·m. The outer glass sheet 11 has a thermal conductivity in the range of 0.7 W / (m·K) to 1.3 W / (m·K). Preferably, the outer glass sheet has a thermal conductivity in the range of 0.9 W / (m·K) to 1.1 W / (m·K). Further, the outer glass sheet has a thermal conductivity in the range of 0.95 W / (m·K) to 1.05 W / (m·K). The outer glass sheet 11 is made of, but is not limited to, soda-lime glass, borosilicate glass, lithium-aluminum-silicon glass, or alumino-silicate glass. Preferably, the outer glass sheet 11 is made of soda-lime glass. The soda-lime glass has a thermal conductivity of 1.0 W / (m·K). The type and material of the outer glass sheet 11 are not specifically limited in the present application.

[0058] In this embodiment, the interlayer 12 is a transparent thermoplastic polymer film or a colored thermoplastic polymer film, and the thickness of the interlayer 12 is 0.38 mm to 2.28 mm. For example, the thickness of the interlayer 12 can be, but is not limited to, 0.38 mm, or 0.76 mm, or 1.14 mm, or 1.52 mm, or 1.9 mm, or 2.28 mm, or other values between 0.38 mm and 2.28 mm. The material of the thermoplastic polymer film can be selected from at least one of polyvinyl butyral (PVB), polyurethane (PU), ethylene-vinyl acetate copolymer (EVA), polyamide (PA), and ionomer (SentryGlas Plus, SGP), and the like. For example, when the information acquisition device is a 905 nm laser radar, the interlayer 12 is selected to be PVB; when the information acquisition device is a 1550 nm laser radar, the interlayer 12 is selected to be EVA. The visible light transmittance of the interlayer 12 is greater than or equal to 80%. For example, the visible light transmittance of the interlayer 12 can be, but is not limited to, 80%, or 85%, or 90%, or 95%, and the like. The interlayer 12 can be a single-layer structure or a multi-layer structure, and the multi-layer structure can be, for example, a double-layer structure, a triple-layer structure, a four-layer structure, a five-layer structure, and the like. The interlayer 12 can also have other functions, for example, at least one colored area is provided as a shading band to reduce the interference of sunlight on the human eye, or an infrared absorber is added to have a sunscreen or heat insulation function, or an ultraviolet absorber is added to have an ultraviolet shielding function, or the plasticizer content of at least one layer of the multi-layer structure is higher to have a sound insulation function, or at least one layer of the multi-layer structure is wedge-shaped to enable the vehicle window glass 100 to be used for a head-up display (Head Up Display) function. The thermal conductivity of the interlayer 12 is generally less than 0.3 W / (m·K). For example, the thermal conductivity of PVB is 0.19-0.21 W / (m·K). The thermal conductivity of EVA is 0.17 W / (m·K).

[0059] In this embodiment, the inner glass pane 13 is transparent or tinted glass. Preferably, the inner glass pane 13 is selected from transparent or extra-clear glass. The inner glass pane 13 has a visible light transmittance greater than or equal to 80%. The thickness of the inner glass pane 13 is in the range of 0.7mm to 5.0mm. Exemplarily, the thickness of the inner glass pane 13 can be, but is not limited to, 0.7mm, or 1.1mm, or 1.6mm, or 1.8mm, or 2.1mm, or 2.6mm, or 3.2mm, or 3.5mm, or 4.0mm, or 4.5mm, or 5.0mm, or other values in the range of 0.7mm to 5.0mm. Exemplarily, the thickness of the inner glass pane 13 is 1.8mm; or, the thickness of the inner glass pane 13 is 2.1mm.

[0060] The inner glass pane 13 has an electrical resistivity greater than or equal to 10 10 Ω·m. The inner glass pane 13 has a thermal conductivity in the range of 0.7W / (m·K) to 1.3W / (m·K). Preferably, the inner glass pane has a thermal conductivity in the range of 0.9W / (m·K) to 1.1W / (m·K). Further, the outer glass pane has a thermal conductivity in the range of 0.95W / (m·K) to 1.05W / (m·K). The material of the inner glass pane 13 includes, but is not limited to, soda-lime glass, borosilicate glass, lithium-aluminum-silicon glass, or alumino-silicate glass. Preferably, the material of the inner glass pane 13 is soda-lime glass. The thermal conductivity of soda-lime glass is 1.0W / (m·K). The type and material of the inner glass pane 13 are not specifically limited in this application. Please refer to Figure 3 and Figure 4In the embodiment, the vehicle window glass 100 has an information collection area S1, a non-information collection area S2, and a film-free window S3. The information collection area S1 is provided with a transparent heat-conducting film 40. Signals received and / or emitted by the information collection device pass through the information collection area S1 and the transparent heat-conducting film 40. The information collection device captures the driving environment outside the vehicle 1000 as image data through the information collection area S1 and the transparent heat-conducting film 40, and light outside the vehicle 1000 is received by the information collection device through the information collection area S1 and the transparent heat-conducting film 40. The non-information collection area S2 includes a transparent area S21 and a shielding area S22. The visible light transmittance of the transparent area S21 is greater than or equal to 70% to facilitate the observation of the environment outside the vehicle through the transparent area S21 by the people inside the vehicle. The visible light transmittance of the shielding area S22 is less than or equal to 5% to facilitate the shielding, protection, and improvement of the overall appearance, etc. Preferably, the visible light transmittance of the shielding area S22 is less than or equal to 1.5%, more preferably less than or equal to 0.5%, and even almost equal to 0, i.e. non-transparent. Specifically, the shielding area S22 can be formed with a shielding layer, which is arranged on at least one of the second surface 112, the third surface 131, and the fourth surface 132. The material of the shielding layer can be ceramic ink or ultraviolet ink, which is printed on the second surface 112, the third surface 131, and / or the fourth surface 132 by screen printing, inkjet printing, etc. After curing or high-temperature sintering, the shielding layer is formed, and the thickness of the shielding layer is 5.0 μm to 40.0 μm.

[0061] In Figure 4 , the transparent conductive layer 20 covers the transparent area S21, the information collection area S1 is located within the film-free window S3, and the film-free window S3 is located within the transparent area S21. It can be understood that the film-free window S3 can also be located within the shielding area S22.

[0062] The shielding area S22 is arranged circumferentially around the transparent area S21. Further optionally, the shielding area S22 is also arranged circumferentially around the film-free window S3. The area of the film-free window S3 is greater than or equal to the area of the information collection area S1. The information collection area S1 is located within the film-free window S3. The profile of the film-free window S3 is 0 to 10.0 mm larger than the profile of the information collection area S1, which can be exemplified as 0 (i.e. the profile of the film-free window S3 completely coincides with the profile of the information collection area S1), 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, etc. Preferably, the profile of the film-free window S3 is 1 mm to 5 mm larger than the profile of the information collection area S1.

[0063] Please continue to refer to Figure 3In the embodiment, the transparent conductive layer 20 includes a functional metal layer and a plurality of dielectric layers. Along the thickness direction of the transparent conductive layer 20, the functional metal layer is sandwiched by the dielectric layers. The number of the functional metal layers can be one, two, three, four or even more. The functional metal layer and the dielectric layer can be deposited by a method of chemical vapor deposition (CVD) or physical vapor deposition (PVD). For example, the functional metal layer and the dielectric layer are deposited by magnetron sputtering.

[0064] The functional metal layer can be a metal layer or an alloy layer. For example, the material of the functional metal layer can be a metal or a metal alloy selected from at least one element of Ag, Au, Cu, Al, Pt. Preferably, the material of the functional metal layer is Ag or Ag alloy. For example, the Ag alloy can be AgCu alloy, AgIn alloy, AgAl alloy, etc. The resistivity of Ag is 1.6*10 -8 Ω·m. The material of the dielectric layer can be at least one of nitride, oxide, oxynitride of a metal selected from Zn, Sn, Ti, Si, Al, Ni, Cr, Nb, Mg, Zr, Ga, Y, In, Sb, V, Ta and alloy thereof, for example, ZnSnOx, TiOx, SnOx, SiNOx, SiNx, etc.

[0065] It should be noted that, in the embodiment, the laminated glass 10 is in a curved shape, and the laminated glass 10 needs to be subjected to high-temperature bending forming treatment of at least 500°C, so the transparent conductive layer 20 needs to be able to withstand high-temperature heat treatment, that is, the optical, electrical and mechanical properties of the transparent conductive layer 20 will not degrade or even become better after the heat treatment process (such as baking, tempering).

[0066] For reference, please refer to Figure 3 and Figure 4 In the embodiment, the transparent conductive layer 20 is arranged on the second surface 112 of the outer glass sheet 11, the third surface 131 or the fourth surface 132 of the inner glass sheet 13. The transparent conductive layer 20 completely covers the transparent area S21. In other embodiments, the transparent conductive layer 20 can also partially cover the transparent area S21.

[0067] The transparent conductive layer 20 in the film-removing window S3 is removed by at least 50%, that is, the transparent conductive layer 20 in the information collection area S1 is at least partially removed. Preferably, the transparent conductive layer 20 in the film-removing window S3 is removed by at least 60%, or at least 70%, or at least 80%, or at least 90%, or at least 95%, or at least 99%, or even completely removed by 100%. The partial removal of the transparent conductive layer 20 in the information collection area S1 includes that the transparent conductive layer 20 in the information collection area S1 is connected with the transparent conductive layer 20 outside the information collection area S1, that is, the transparent conductive layer 20 in the information collection area S1 still maintains electrical communication with the transparent conductive layer 20 outside the information collection area S1, and also includes that the transparent conductive layer 20 in the information collection area S1 is spaced from the transparent conductive layer 20 outside the information collection area S1, that is, the transparent conductive layer 20 in the information collection area S1 is electrically insulated from the transparent conductive layer 20 outside the information collection area S1.

[0068] Please continue to refer to Figure 3 In the embodiment, the materials of the first bus bar 31 and the second bus bar 32 include but are not limited to metal foil, conductive silver paste, conductive glue, etc. The metal foil can be exemplified by copper foil, aluminum foil, etc.

[0069] In the embodiment, the first bus bar 31 and the second bus bar 32 are both laminated on the transparent conductive layer 20. That is, the first bus bar 31 and the second bus bar 32 are both electrically connected with the transparent conductive layer 20. Along the height direction (Y-axis direction) of the vehicle window glass 100, the first bus bar 31 and the second bus bar 32 are respectively located on opposite sides of the information collection area S1. Along the height direction (Y-axis direction) of the vehicle window glass 100, the distance between the first bus bar 31 and the outer edge of the closest laminated glass 10 ranges from 6.0 mm to 30.0 mm. The distance between the first bus bar 31 and the outer edge of the closest laminated glass 10 can be but is not limited to 6.0 mm, 12.0 mm, 18.0 mm, 24.0 mm, 30.0 mm, or other values between 6.0 mm and 30.0 mm. The distance between the second bus bar 32 and the outer edge of the closest laminated glass 10 ranges from 6.0 mm to 30.0 mm (including the end point value). The distance between the second bus bar 32 and the outer edge of the closest laminated glass 10 can be but is not limited to 6.0 mm, 12.0 mm, 18.0 mm, 24.0 mm, 30.0 mm, or other values between 6.0 mm and 30.0 mm. The first bus bar 31 and the second bus bar 32 are both located in the shielding area S22.

[0070] In other embodiments, the first bus bar 31 and the second bus bar 32 can also be respectively located on opposite sides of the information collection area S1 in the width direction (X-axis direction) of the vehicle window glass 100.

[0071] The first bus bar 31 and the second bus bar 32 are respectively electrically connected with the positive pole and the negative pole of the vehicle-mounted power supply. The vehicle-mounted power supply, the first bus bar 31, the transparent conductive layer 20, and the second bus bar 32 form a conductive loop, and the vehicle-mounted power supply can provide the transparent conductive layer 20 with voltage and current, so that the transparent conductive layer 20 generates heat after being electrified, and further heats the transparent area S21 of the vehicle window glass 100 to defog, defrost, or deice the transparent area S21 of the vehicle window glass 100.

[0072] The voltage of the vehicle-mounted power supply can be 12V-16V. When the first bus bar 31 and the second bus bar 32 are electrified, the transparent conductive layer 20 generates heat, and can reach a heating power density of at least 400W / m 2 , which is beneficial to defog, defrost, or deice the transparent area S21 of the vehicle window glass 100.

[0073] The voltage of the vehicle-mounted power supply can be 36V-48V. When the first bus bar 31 and the second bus bar 32 are electrified, the transparent conductive layer 20 generates heat, and can reach a heating power density of at least 500W / m 2 , or even a heating power density of at least 1000W / m 2 , which is beneficial to quickly defog, quickly defrost, or quickly deice the transparent area S21 of the vehicle window glass 100.

[0074] Please continue to refer to Figure 3 In the embodiment, the transparent heat-conducting film 40 has electrical insulation and good heat conductivity, and has high transmittance in the visible light band. The resistivity p of the transparent heat-conducting film 40 is greater than or equal to 1000Ω·m, or the resistivity p of the transparent heat-conducting film 40 is greater than or equal to 10000Ω·m, or the resistivity p of the transparent heat-conducting film 40 is greater than or equal to 100000Ω·m. Specific examples can be 1000Ω·m, 2000Ω·m, 5000Ω·m, 8000Ω·m, 10000Ω·m, 20000Ω·m, 50000Ω·m, 80000Ω·m, 100000Ω·m, 200000Ω·m, 300000Ω·m, 500000Ω·m, and the like.

[0075] The thermal conductivity of the transparent heat-conducting film 40 is ≥ 1.5 W / (m·K), or the thermal conductivity of the transparent heat-conducting film 40 is ≥ 2.0 W / (m·K), or the thermal conductivity of the transparent heat-conducting film 40 is ≥ 5.0 W / (m·K), or the thermal conductivity of the transparent heat-conducting film 40 is ≥ 10.0 W / (m·K). Preferably, the thermal conductivity of the transparent heat-conducting film 40 is greater than or equal to 15.0 W / (m·K), or the thermal conductivity of the transparent heat-conducting film 40 is greater than or equal to 20.0 W / (m·K), or the thermal conductivity of the transparent heat-conducting film 40 is greater than or equal to 30.0 W / (m·K). Specific examples include 1.5 W / (m·K), 2 W / (m·K), 3 W / (m·K), 5 W / (m·K), 8 W / (m·K), 10 W / (m·K), 15 W / (m·K), 20 W / (m·K), 25 W / (m·K), 30 W / (m·K), 35 W / (m·K), 40 W / (m·K), 45 W / (m·K), 50 W / (m·K), etc.

[0076] In this embodiment, the transparent heat-conducting film 40 includes a polymer matrix, a nanofiller, and an auxiliary agent. The material of the polymer matrix is selected from at least one of polyhexamethylene adipamide, nanocellulose, poly(p-phenylene benzobisoxazole) fiber, polyrotaxane, polyimide, and polyvinylpyrrolidone. The material of the nanofiller is selected from at least one of boron nitride nanosheet, graphene nanosheet, and carbon nanotube. The auxiliary agent can be selected from at least one of a dispersant, a leveling agent, a reducing solution, etc.

[0077] The thermal conductivity of the boron nitride nanosheet is 1000 W / (m·K) to 2000 W / (m·K) at room temperature, such as 1000 W / (m·K), 1100 W / (m·K), 1200 W / (m·K), 1300 W / (m·K), 1400 W / (m·K), 1500 W / (m·K), 1600 W / (m·K), 1700 W / (m·K), 1800 W / (m·K), 1900 W / (m·K), 2000 W / (m·K), etc.

[0078] The thermal conductivity of the graphene nanosheet is 3000 W / (m·K) to 5300 W / (m·K) at room temperature, such as 3000 W / (m·K), 3200 W / (m·K), 3500 W / (m·K), 3800 W / (m·K), 4000 W / (m·K), 4200 W / (m·K), 4500 W / (m·K), 4700 W / (m·K), 5000 W / (m·K), 5100 W / (m·K), 5300 W / (m·K), etc.

[0079] The thermal conductivity of carbon nanotubes is 3000 W / (m·K) to 3500 W / (m·K) at room temperature, for example, 3000 W / (m·K), 3050 W / (m·K), 3100 W / (m·K), 3150 W / (m·K), 3200 W / (m·K), 3250 W / (m·K), 3300 W / (m·K), 3350 W / (m·K), 3400 W / (m·K), 3450 W / (m·K), 3500 W / (m·K), or the like.

[0080] The forming method of the transparent heat-conductive film 40 includes, but is not limited to, printing, coating, pasting, and the like. The coating method can be exemplified by spraying, shower coating, spin coating, and the like. Preferably, the transparent heat-conductive film 40 is formed by spraying. The spraying method is easier to implement and can ensure the uniformity of the thickness of the transparent heat-conductive film 40.

[0081] In other embodiments, the transparent heat-conductive film 40 can also be selected from transparent insulating heat-conductive glue. The thermal conductivity of the transparent insulating heat-conductive glue is 2.0 W / (m·K) to 12.0 W / (m·K), for example, 2 W / (m·K), 4 W / (m·K), 5 W / (m·K), 6 W / (m·K), 8 W / (m·K), 10 W / (m·K), 11 W / (m·K), 12.0 W / (m·K), or the like. The material of the transparent heat-conductive film 40 is not specifically limited in the present embodiment.

[0082] Please refer to Figure 3 and Figure 4In the embodiment, at least one of the first surface 111 of the outer glass sheet 11, the second surface 112 of the outer glass sheet 11, the third surface 131 of the inner glass sheet 13, or the fourth surface 132 of the inner glass sheet 13 is provided with the transparent heat-conducting film 40. The orthogonal projection of the transparent heat-conducting film 40 covers at least part of the information collection area S1 in the thickness direction (Z-axis direction) of the vehicle window glass 100; and the orthogonal projection of the transparent heat-conducting film 40 overlaps with the orthogonal projection of the transparent conductive layer 20. In other words, the projection of the transparent heat-conducting film 40 in the thickness direction of the vehicle window glass 100 covers the information collection area S1, and the projection of the transparent heat-conducting film 40 in the thickness direction of the vehicle window glass 100 overlaps with the projection of the transparent conductive layer 20 in the thickness direction of the vehicle window glass 100. In order to better conduct the heat of the peripheral hot spots of the information collection area S1, the projection of the transparent heat-conducting film 40 in the thickness direction of the vehicle window glass 100 overlaps with the projection of the transparent conductive layer 20 outside the information collection area S1. It can be understood that when the transparent heat-conducting film 40 is coplanar with the transparent conductive layer 20, the transparent heat-conducting film 40 is in contact with the transparent conductive layer 20, which is conducive to faster heat conduction from the transparent conductive layer 20 to the transparent heat-conducting film 40. The transparent heat-conducting film 40 is in contact with the transparent conductive layer 20, and the projection of the transparent heat-conducting film 40 in the thickness direction of the vehicle window glass 100 overlaps with the projection of the transparent conductive layer 20 outside the information collection area S1, which means that the transparent heat-conducting film 40 is in contact with the transparent conductive layer 20 outside the information collection area S1. When the transparent heat-conducting film 40 is not coplanar with the transparent conductive layer 20, the transparent heat-conducting film 40 is neither in contact with the transparent conductive layer 20 inside the information collection area S1 nor in contact with the transparent conductive layer 20 outside the information collection area S1. The orthogonal projection of the transparent heat-conducting film 40 overlaps with the orthogonal projection of the transparent conductive layer 20 in the thickness direction (Z-axis direction) of the vehicle window glass 100. Preferably, the projection of the transparent heat-conducting film 40 in the thickness direction of the vehicle window glass 100 overlaps with the projection of the transparent conductive layer 20 outside the information collection area S1.

[0083] The number of transparent heat-conducting films 40 can be one, two, three, or four. For example, the number of transparent heat-conducting films 40 is two. One of the transparent heat-conducting films 40 is arranged on the second surface 112 of the outer glass sheet 11, and the other transparent heat-conducting film 40 is arranged on the third surface 131 of the inner glass sheet 13; or one of the transparent heat-conducting films 40 is arranged on the second surface 112 of the outer glass sheet 11, and the other transparent heat-conducting film 40 is arranged on the fourth surface 132 of the inner glass sheet 13; or one of the transparent heat-conducting films 40 is arranged on the third surface 131 of the inner glass sheet 13, and the other transparent heat-conducting film 40 is arranged on the fourth surface 132 of the inner glass sheet 13.

[0084] In this embodiment, the information acquisition device can be a high-pixel camera. To meet the requirements of high-pixel camera usage, the information acquisition area S1, covered with at least one transparent thermally conductive film 40, has a transmittance TL(440-700) of at least 60% for visible light with wavelengths of 440nm to 700nm incident at a 65° incident angle, more preferably at least 65%, further preferably at least 70%, even more preferably at least 75%, and even more preferably at least 80%, and even more preferably at least 85%. TL(440-700) is the transmittance of the information acquisition area S1 for visible light with wavelengths of 440nm to 700nm incident at a 65° incident angle.

[0085] To meet the requirements of high-pixel cameras, it is preferable that the ratio of the transmittance Tp of the information acquisition area S1 covered with at least one transparent thermal conductive film 40 to the transmittance Ts of the information acquisition area S1 covered with the transparent thermal conductive film 40 to the transmittance Ts of the information acquisition area S1 covered with the transparent thermal conductive film 40 to the transmittance Ts of the information acquisition area S1 covered with the transparent thermal conductive film 40 to the transmittance Ts of the wavelength 440nm~700nm at a 65° incident angle is greater than or equal to 1.45, that is, Tp / Ts≥1.45. Specific examples can be 1.45, 1.46, 1.47, 1.48, 1.49, 1.50, 1.51, 1.52, etc.

[0086] In the first possible implementation, such as Figure 3 As shown, a transparent conductive layer 20 is deposited on the second surface 112 of the outer glass plate 11. Both the first busbar 31 and the second busbar 32 are in direct electrical contact with the transparent conductive layer 20. A transparent thermally conductive film 40 is stacked on the second surface 112 of the outer glass plate 11. The transparent thermally conductive film 40 is in direct contact with the transparent conductive layer 20.

[0087] In the second possible implementation, such as Figure 5 As shown, a transparent conductive layer 20 is deposited on the second surface 112 of the outer glass plate 11. Both the first busbar 31 and the second busbar 32 are in direct electrical contact with the transparent conductive layer 20. A transparent thermally conductive film 40 is stacked on the third surface 131 of the inner glass plate 13. Along the thickness direction (Z-axis direction) of the window glass 100, the orthographic projection of the transparent thermally conductive film 40 overlaps with the orthographic projection of the transparent conductive layer 20.

[0088] The third possible implementation, such as Figure 6 As shown, a transparent conductive layer 20 is deposited on the second surface 112 of the outer glass plate 11. Both the first busbar 31 and the second busbar 32 are in direct electrical contact with the transparent conductive layer 20. A transparent thermally conductive film 40 is stacked on the fourth surface 132 of the inner glass plate 13. Along the thickness direction (Z-axis direction) of the window glass 100, the orthographic projection of the transparent thermally conductive film 40 overlaps with the orthographic projection of the transparent conductive layer 20.

[0089] The fourth possible implementation, such as Figure 7 As shown, a transparent conductive layer 20 is deposited on the third surface 131 of the inner glass plate 13. Both the first busbar 31 and the second busbar 32 are in direct electrical contact with the transparent conductive layer 20. A transparent thermally conductive film 40 is stacked on the third surface 131 of the inner glass plate 13. The transparent thermally conductive film 40 is in direct contact with the transparent conductive layer 20.

[0090] The fifth possible implementation, such as Figure 8 As shown, a transparent conductive layer 20 is deposited on the third surface 131 of the inner glass plate 13. Both the first busbar 31 and the second busbar 32 are in direct electrical contact with the transparent conductive layer 20. A transparent thermally conductive film 40 is stacked on the second surface 112 of the outer glass plate 11. Along the thickness direction (Z-axis direction) of the window glass 100, the orthographic projection of the transparent thermally conductive film 40 overlaps with the orthographic projection of the transparent conductive layer 20.

[0091] The sixth possible implementation, such as Figure 9 As shown, a transparent conductive layer 20 is deposited on the third surface 131 of the inner glass plate 13. Both the first busbar 31 and the second busbar 32 are in direct electrical contact with the transparent conductive layer 20. A transparent thermally conductive film 40 is stacked on the fourth surface 132 of the inner glass plate 13. Along the thickness direction (Z-axis direction) of the window glass 100, the orthographic projection of the transparent thermally conductive film 40 overlaps with the orthographic projection of the transparent conductive layer 20.

[0092] The following describes the application of transparent thermally conductive films 40 with different compositions. Figure 3 A specific example of the information collection area S1 of the shown car window glass 100 will be described.

[0093] In Example 1, the transparent thermally conductive film 40 comprises the following parts by weight of raw materials: 81 parts of nanocellulose, 15 parts of graphene nanosheets, and 19 parts of boron nitride nanosheets.

[0094] In Example 2, the transparent thermally conductive film 40 comprises the following raw materials in parts by weight: 81 parts of nanocellulose, 15 parts of graphene nanosheets, and 16 parts of boron nitride nanosheets.

[0095] In Example 3, the transparent thermally conductive film 40 comprises the following raw materials in parts by weight: 81 parts of nanocellulose, 15 parts of graphene nanosheets, and 23 parts of boron nitride nanosheets.

[0096] In Example 4, the transparent thermally conductive film 40 comprises the following raw materials in parts by weight: 75 parts of nanocellulose, 13 parts of graphene nanosheets, and 15 parts of boron nitride nanosheets.

[0097] In Example 5, the transparent thermally conductive film 40 comprises the following raw materials in parts by weight: 85 parts of nanocellulose, 17 parts of graphene nanosheets, and 21 parts of boron nitride nanosheets.

[0098] In Example 6, the transparent heat-conductive film 40 comprises the following raw materials by weight: 63 parts of nanocellulose, 12 parts of graphene nanoplatelets, and 11 parts of boron nitride nanoplatelets.

[0099] In Example 7, the transparent heat-conductive film 40 comprises the following raw materials by weight: 89 parts of nanocellulose, 37 parts of graphene nanoplatelets, and 36 parts of boron nitride nanoplatelets.

[0100] In Example 8, the transparent heat-conductive film 40 comprises the following raw materials by weight: 80 parts of nanocellulose, 8 parts of graphene nanoplatelets, and 12 parts of boron nitride nanoplatelets.

[0101] In Example 9, the transparent heat-conductive film 40 comprises the following raw materials by weight: 92 parts of nanocellulose, 40 parts of graphene nanoplatelets, and 36 parts of boron nitride nanoplatelets.

[0102] In Example 10, the transparent heat-conductive film 40 comprises the following raw materials by weight: 80 parts of nanocellulose, 14 parts of graphene nanoplatelets, and 18 parts of boron nitride nanoplatelets.

[0103] In the comparative example, the information acquisition area S1 of the vehicle window glass 100 is not provided with the transparent heat-conductive film 40.

[0104] The transparent conductive layer 20 of the vehicle window glass 100 is applied with a 36V voltage through the first bus bar 31 and the second bus bar 32, heated for 20 minutes at room temperature (23°C), and the visible light transmittance, thermal conductivity, and center temperature of the information acquisition area S1 of the vehicle window glass 100 of Examples 1-10 and the comparative example are measured, and the results are shown in Table 1.

[0105] Visible light transmittance: measured according to international standard ISO13837.

[0106] Thermal conductivity: measured by using a thermal conductivity instrument.

[0107] Center temperature: measured by using a thermal imager.

[0108] In which, the highest temperature of the fourth surface 132 of the vehicle window glass 100 is 78°C.

[0109] Table 1: Parameters of the information acquisition area S1 of the vehicle window glass 100 of Examples 1-10 and the comparative example

[0110]

[0111]

[0112] As can be seen from Table 1, compared with the case that the transparent heat-conducting film 40 is not arranged in the information collection area S1 of the vehicle window glass 100, in the present embodiment, the thermal conductivity of the information collection area S1 of the vehicle window glass 100 is obviously improved by arranging the transparent heat-conducting film 40 in the information collection area S1 of the vehicle window glass 100. The transparent heat-conducting film 40 can transfer the heat generated by the transparent conductive layer 20 to the information collection area S1, so as to increase the temperature of the information collection area S1. Compared with the case that the transparent heat-conducting film 40 is not arranged in the prior art, the maximum temperature of the periphery of the information collection area S1 is obviously reduced, and the hot spot can be reduced or even eliminated.

[0113] When the vehicle window glass 100 is provided with the transparent conductive layer 20, the difference between the maximum temperature of the fourth surface 132 of the vehicle window glass 100 and the center temperature of the information collection area S1 covered by the transparent heat-conducting film 40 is less than or equal to 46℃, or the difference between the maximum temperature of the fourth surface 132 of the vehicle window glass 100 and the center temperature of the information collection area S1 covered by the transparent heat-conducting film 40 is less than or equal to 40℃, or the difference between the maximum temperature of the fourth surface 132 of the vehicle window glass 100 and the center temperature of the information collection area S1 covered by the transparent heat-conducting film 40 is less than or equal to 35℃, further less than or equal to 30℃, more further less than or equal to 25℃, or even less than or equal to 20℃.

[0114] It can be understood that, in the present embodiment, by at least partially removing the transparent conductive layer 20 in the information collection area S1, the interference or shielding of the transparent conductive layer 20 to the signal received / transmitted by the information collection device can be reduced. By arranging the transparent heat-conducting film 40 in the information collection area S1 of the vehicle window glass 100, the transparent heat-conducting film 40 can improve the thermal conductivity of the information collection area S1, and further accelerate the heat conduction speed of the periphery of the information collection area S1 to the information collection area S1. The projection of the transparent heat-conducting film 40 along the thickness direction of the vehicle window glass 100 overlaps with the projection of the transparent conductive layer 20. After the transparent conductive layer 20 is electrified, the heat generated by the transparent conductive layer 20 can be conducted to the transparent heat-conducting film 40, and then conducted to the information collection area S1 by the transparent heat-conducting film 40, so as to heat the information collection area S1, and defrost, defrost or deice the information collection area S1. Especially when the projection of the transparent heat-conducting film 40 along the thickness direction of the vehicle window glass 100 overlaps with the projection of the transparent conductive layer 20 outside the information collection area S1, the hot spot generated by the transparent conductive layer 20 after electrification in the periphery of the information collection area S1 can be reduced or even eliminated, and the breakage of the vehicle window glass 100 caused by excessive heat can be avoided. Since the transparent heat-conducting film 40 has electrical insulation, the transparent heat-conducting film 40 will not shunt the voltage of the transparent conductive layer 20, and thus the heating power density of the transparent area S21 can be ensured. That is to say, the present embodiment not only ensures the heating effect of the transparent area S21, but also realizes the heating effect of the information collection area S1, and further reduces or even eliminates the hot spot in the periphery of the information collection area S1, so as to ensure the safety performance of the vehicle window glass 100.

[0115] When the transparent heat-conducting film 40 and the transparent conductive layer 20 are located on the same surface of the laminated glass 10, the transparent heat-conducting film 40 is in direct contact with the transparent conductive layer 20, and the heat of the transparent conductive layer 20 can be directly and rapidly conducted to the transparent heat-conducting film 40, so that the heat-conducting efficiency of the transparent heat-conducting film 40 is higher. When the transparent heat-conducting film 40 and the transparent conductive layer 20 are located on different surfaces of the laminated glass 10, respectively, the heat of the transparent conductive layer 20 can also be indirectly conducted to the transparent heat-conducting film 40 through the outer glass plate 11, the inner glass plate 13 or the interlayer 12.

[0116] Please continue to refer to Figure 10 , the second embodiment of the vehicle window glass 100 is provided. The difference between this embodiment and the above-mentioned first embodiment is that the inner glass plate 13 is provided with a through hole 133.

[0117] In this embodiment, the implementation of the outer glass plate 11 and the interlayer 12 can refer to the above-mentioned first embodiment.

[0118] In this embodiment, the inner glass plate 13 is provided with a through hole 133. Along the thickness direction (Z-axis direction) of the vehicle window glass 100, the through hole 133 penetrates the third surface 131 and the fourth surface 132 of the inner glass plate 13. The profile of the through hole 133 is greater than or equal to the profile of the information collection area S1. The information collection area S1 is located within the profile of the through hole 133. In addition, the profile of the film window S3 is greater than or equal to the profile of the through hole 133. The through hole 133 is located within the profile of the film window S3. In other embodiments, the profile of the through hole 133 can also be greater than the profile of the film window S3, and the film window S3 is located within the profile of the through hole 133.

[0119] In this embodiment, the layer structure, material and deposition method of the transparent conductive layer 20 can refer to the above-mentioned first embodiment.

[0120] In this embodiment, the transparent conductive layer 20 is provided on the second surface 112 of the outer glass plate 11, the third surface 131 or the fourth surface 132 of the inner glass plate 13. The transparent conductive layer 20 completely covers the transparent area S21. It can be understood that when the transparent conductive layer 20 is provided on the third surface 131 or the fourth surface 132 of the inner glass plate 13, the transparent conductive layer 20 is arranged away from the through hole 133 of the inner glass plate 13, and the transparent conductive layer 20 in the information collection area S1 is completely removed 100%.

[0121] In other embodiments, the transparent conductive layer 20 can also partially cover the transparent area S21.

[0122] In this embodiment, the material, position and distance between the first bus bar 31, the second bus bar 32 and the outer edge of the laminated glass 10 closest to the distance can also refer to the above-mentioned first embodiment.

[0123] In this embodiment, the resistivity and thermal conductivity of the transparent thermally conductive film 40 can both refer to those of the first embodiment described above. The material and formation method of the transparent thermally conductive film 40 can also refer to those of the first embodiment described above.

[0124] In this embodiment, at least one of the first surface 111 of the outer glass panel 11, the second surface 112 of the outer glass panel 11, the third surface 131 of the inner glass panel 13, or the fourth surface 132 of the inner glass panel 13 is provided with a transparent thermally conductive film 40. Along the thickness direction (Z-axis direction) of the window glass 100, the orthographic projection of the transparent thermally conductive film 40 at least covers a portion of the information acquisition area S1; and the orthographic projection of the transparent thermally conductive film 40 overlaps with the orthographic projection of the transparent conductive layer 20. In other words, the projection of the transparent thermally conductive film 40 along the thickness direction of the window glass 100 covers the information acquisition area S1 and overlaps with the projection of the transparent conductive layer 20 along the thickness direction of the window glass 100. The projection of the transparent thermally conductive film 40 along the thickness direction of the window glass 100 covers the outline of the through hole 133. In other embodiments, the projection of the transparent thermally conductive film 40 along the thickness direction of the window glass 100 may not cover the outline of the through hole 133.

[0125] It should be noted that when the transparent thermally conductive film 40 is disposed on the first surface 111 or the second surface 112 of the outer glass plate 11, the transparent thermally conductive film 40 can be directly printed or coated on the first surface 111 or the second surface 112 of the outer glass plate 11, or it can be pasted on the first surface 111 or the second surface 112 of the outer glass plate 11 in the form of a film. When the transparent thermally conductive film 40 is disposed on the third surface 131 or the fourth surface 132 of the inner glass plate 13, the transparent thermally conductive film 40 can be pasted on the third surface 131 or the fourth surface 132 of the inner glass plate 13 in the form of a film, and the transparent thermally conductive film 40 covers the through hole 133.

[0126] In the first possible implementation, such as Figure 10 As shown, a transparent conductive layer 20 is stacked on the second surface 112 of the outer glass panel 11. Both the first busbar 31 and the second busbar 32 are in direct electrical contact with the transparent conductive layer 20. A transparent thermally conductive film 40 is stacked on the second surface 112 of the outer glass panel 11. The transparent thermally conductive film 40 is in direct contact with the transparent conductive layer 20. The projection of the transparent thermally conductive film 40 along the thickness direction of the window glass 100 covers the outline of the through-hole 133.

[0127] In the second possible implementation, such as Figure 11As shown, the transparent conductive layer 20 is laminated on the third surface 131 of the inner glass sheet 13. The first bus bar 31 and the second bus bar 32 are both in direct electrical contact with the transparent conductive layer 20. The transparent heat-conductive film 40 is laminated on the second surface 112 of the outer glass sheet 11. In the thickness direction of the vehicle window glass 100, the orthogonal projection of the transparent heat-conductive film 40 overlaps the orthogonal projection of the transparent conductive layer 20. The orthogonal projection of the transparent heat-conductive film 40 in the thickness direction of the vehicle window glass 100 covers the contour of the through hole 133.

[0128] It can be understood that, in the embodiment, by providing the through hole 133 on the inner glass sheet 13 and the through hole 133 completely covering the information acquisition area S1, the visible light transmittance and optical quality of the laminated glass 10 in the information acquisition area S1 can be improved.

[0129] The above has carried on the detailed introduction to the embodiment of the application, the principle and implementation mode of the application are described by applying specific examples in this paper, the above embodiment is only used for helping understanding the method of the application and its core thought; at the same time, for the general technical personnel in the art, according to the thought of the application, the specific implementation mode and application range will have the change, according to the above, the content of the specification should not be understood as the limitation of the application.

Claims

1. A vehicle glazing, characterised in that, The vehicle window glass comprises a laminated glass, a transparent conductive layer and a transparent heat-conductive film, the laminated glass comprises an outer glass sheet, an intermediate layer and an inner glass sheet, the outer glass sheet comprises a first surface and a second surface arranged away from the first surface, the inner glass sheet comprises a third surface and a fourth surface arranged away from the third surface, the intermediate layer is arranged between the outer glass sheet and the inner glass sheet, the second surface faces the intermediate layer, and the third surface faces the intermediate layer; The transparent conductive layer is arranged on the second surface, the third surface or the fourth surface, the vehicle window glass is provided with an information collection area, and the transparent conductive layer in the information collection area is at least partially removed; At least one of the first surface, the second surface, the third surface or the fourth surface is provided with the transparent heat-conductive film, the projection of the transparent heat-conductive film along the thickness direction of the vehicle window glass covers the information collection area, and overlaps with the projection of the transparent conductive layer; The resistivity of the transparent heat-conductive film is greater than or equal to 1000 Ω·m, and the thermal conductivity of the transparent heat-conductive film is greater than or equal to 1.5 W / (m·K); The material of the transparent heat-conductive film comprises a nano filler, the nano filler is selected from at least one of a boron nitride nanoplate, a graphene nanoplate and a carbon nanotube, the thermal conductivity of the carbon nanotube is 3000 W / (m·K) to 3500 W / (m·K), the thermal conductivity of the graphene nanoplate is 3000 W / (m·K) to 5300 W / (m·K), and the thermal conductivity of the boron nitride nanoplate is 1000 W / (m·K) to 2000 W / (m·K) at room temperature; The vehicle window glass further comprises a first busbar and a second busbar arranged between the second surface and the third surface, and the first busbar and the second busbar are in direct electrical contact with the transparent conductive layer; The first busbar and the second busbar are applied with a voltage of 36 V, the vehicle window glass is heated for 20 minutes at room temperature of 23℃, the difference between the maximum temperature of the fourth surface of the vehicle window glass with the transparent conductive layer and the center temperature of the information collection area covered with the transparent heat-conductive film is less than or equal to 46℃, or the difference between the maximum temperature of the fourth surface of the vehicle window glass with the transparent conductive layer and the center temperature of the information collection area covered with the transparent heat-conductive film is less than or equal to 40℃, or the difference between the maximum temperature of the fourth surface of the vehicle window glass with the transparent conductive layer and the center temperature of the information collection area covered with the transparent heat-conductive film is less than or equal to 35℃.

2. The vehicle glazing of claim 1, wherein, The transparent heat-conductive film is in direct contact with the transparent conductive layer; And / or, the projection of the transparent heat-conductive film along the thickness direction of the vehicle window glass overlaps with the projection of the transparent conductive layer outside the information collection area.

3. The glazing of claim 1, wherein, The number of the transparent heat-conductive films is two; One of the transparent heat-conductive films is arranged on the second surface, and the other transparent heat-conductive film is arranged on the third surface; Or, one of the transparent heat-conductive films is arranged on the second surface, and the other transparent heat-conductive film is arranged on the fourth surface; Or, one of the transparent heat-conducting films is arranged on the third surface, and the other transparent heat-conducting film is arranged on the fourth surface.

4. The glazing of claim 1, wherein, The resistivity of the transparent heat-conducting film is greater than or equal to 10000 Ω·m.

5. The glazing of claim 1, wherein, The resistivity of the transparent heat-conducting film is greater than or equal to 100000 Ω·m.

6. The glazing of claim 1, wherein, The thermal conductivity of the transparent heat-conducting film is greater than or equal to 2 W / (m·K).

7. The glazing of claim 1, wherein, The thermal conductivity of the transparent heat-conducting film is greater than or equal to 5 W / (m·K).

8. The glazing according to claim 1, wherein, The thermal conductivity of the transparent heat-conducting film is greater than or equal to 10 W / (m·K).

9. The glazing of claim 1, wherein, The thermal conductivity of the transparent heat-conducting film is greater than or equal to 15 W / (m·K).

10. The vehicle glazing of claim 1, wherein, The thermal conductivity of the transparent heat-conducting film is greater than or equal to 20 W / (m·K).

11. The glazing of claim 1, wherein, The thermal conductivity of the transparent heat-conducting film is greater than or equal to 30 W / (m·K).

12. The glazing of claim 1 wherein, The vehicle window glass is provided with a film-removed window, the transparent conductive layer in the film-removed window is removed by at least 95%, the area of the film-removed window is greater than or equal to the area of the information collection area, and the outline of the film-removed window is 0-10 mm larger than the outline of the information collection area.

13. The glazing of claim 1 wherein, The vehicle window glass is provided with a film-removed window, the transparent conductive layer in the film-removed window is removed by at least 95%, the area of the film-removed window is greater than or equal to the area of the information collection area, and the outline of the film-removed window is 1-5 mm larger than the outline of the information collection area.

14. The vehicle glazing of claim 1, wherein, The thermal conductivity of the outer glass plate and / or the inner glass plate is 0.7 W / (m·K)-1.3 W / (m·K).

15. The window pane of claim 1, wherein, The thermal conductivity of the outer glass plate and / or the inner glass plate is 0.9 W / (m·K)-1.1 W / (m·K).

16. The window pane of claim 1, wherein, The information collection area covered with the transparent heat-conducting film has a transmittance TL of at least 60% for visible light with a wavelength of 440 nm to 700 nm incident at an angle of 65° (440-700) ; and / or the transmittance TL of the information collection area covered with the transparent heat-conducting film to red light with a wavelength of 600-700 nm at an incident angle of 65° (600-700) and / or the transmittance TL of the information collection area covered with the transparent heat-conducting film to visible light with a wavelength of 440-700 nm at an incident angle of 65° (440-700) is greater than or equal to 0.

8. And / or, the ratio between the transmittance Tp of P-polarized light with a wavelength of 440-700 nm at an incident angle of 65° and the transmittance Ts of S-polarized light with a wavelength of 440-700 nm at an incident angle of 65° of the information collection area covered with the transparent heat-conducting film is greater than or equal to 1.

45.

17. The window pane of claim 1, wherein, The material of the transparent heat-conducting film further comprises a polymer matrix and an auxiliary agent. The polymer matrix is selected from at least one of polyhexamethylene adipamide, nanocellulose, poly(p-phenylene benzobisoxazole) fiber, polyrotaxane, polyimide, and polyvinylpyrrolidone. The auxiliary agent is selected from at least one of a dispersing agent, a leveling agent, and a reducing solution.

18. The glazing of claim 1 wherein, The inner glass plate is provided with a through hole penetrating through the third surface and the fourth surface, the outline of the through hole is greater than or equal to the outline of the information collection area, and the projection of the transparent heat-conducting film along the thickness direction of the vehicle window glass covers the outline of the through hole.

19. A vehicle characterized by comprising: A vehicle body, an information collection device, and a vehicle window glass according to any one of claims 1-18 are provided, the vehicle window glass is connected to the vehicle body, the information collection device is arranged inside the vehicle, and the signal received and / or emitted by the information collection device passes through the information collection area and the transparent heat-conducting film.

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