Dimming glass structure and vehicle

Abstract

The invention discloses a dimming glass structure and a vehicle. The dimming glass structure comprises a first glass layer, dimming glass and a second glass layer, in the thickness direction, a first light shielding structure is arranged between the dimming glass and the first glass layer, and a second light shielding structure is arranged between the dimming glass and the second glass layer; on the projection in the thickness direction, the first light shielding structure and the second light shielding structure form annular structures arranged in the circumferential direction of the dimming glass, and the edge of the dimming glass is located on the outer side of the inner side edge of the first light shielding structure and located on the inner side of the outer side edge of the first light shielding structure. The edge of the dimming glass is located on the outer side of the inner edge of the second light shielding structure and located on the inner side of the outer edge of the second light shielding structure.

Description

Technical Field

[0001] This invention relates to the field of rail transit technology, specifically to the structure and control design of a dimming glass. Background Technology

[0002] With the development of technology, electronically controlled dimming glass has become a new favorite in vehicle intelligent settings. Its advantage lies in its integration inside the window glass, eliminating the need for a separate sunshade and maximizing product integration. Moreover, compared to sunshades that completely block the view, dimming glass can adjust the light transmittance of the glass according to the intensity of sunlight, which can both avoid glare from the sun and allow for continuous viewing of the scenery outside the vehicle.

[0003] However, new technologies bring new risks and failure points. Judging from the application of the only batch of dimming glass installed in vehicles in China, some unique properties of dimming glass were not fully considered in the early design, resulting in frequent failures during the application of dimming glass. The failures are numerous and widespread, which greatly reduces the user experience and market expectations. Summary of the Invention

[0004] The problem this invention aims to solve is the issue in the prior art where the edge of the dimming glass structure is exposed to sunlight under high-temperature conditions, and the dimming glass layer ages faster under the action of ultraviolet rays.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a dimming glass structure, comprising a first glass layer 1, a dimming glass layer 3, and a second glass layer 2 arranged sequentially in the thickness direction LH of the dimming glass structure. In the thickness direction LH, a first light blocking structure 51 is provided between the dimming glass layer 3 and the first glass layer 1, and a second light blocking structure 52 is provided between the dimming glass layer 3 and the second glass layer 2. On the projection along the thickness direction LH, the first light blocking structure 51 and the second light blocking structure 52 both form a ring structure arranged along the circumference of the dimming glass layer 3. The edge of the dimming glass layer 3 is located outside the inner edge of the first light blocking structure 51 and inside the outer edge of the first light blocking structure 51. The edge of the dimming glass layer 3 is located outside the inner edge of the second light blocking structure 52 and inside the outer edge of the second light blocking structure 52.

[0006] Based on the same inventive concept, the present invention also provides a vehicle, including a vehicle body 7 and a window mounted on the vehicle body 7, wherein the window is the aforementioned dimming glass structure. Attached Figure Description

[0007] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0008] Figure 1 This is a partial cross-sectional view of the dimming glass structure according to an embodiment of the present invention, wherein the cross-section is parallel to the thickness direction and parallel to the length direction; Figure 2 It is Figure 1 A schematic diagram showing the switching glass viewed along its thickness direction after the first glass layer and the first adhesive layer have been removed.

[0009] Figure 3 This is a schematic diagram illustrating the connection of an external cable to the connection electrode of the dimming layer via solder, according to an embodiment of the present invention. Figure 4 This is a schematic diagram of the lamination pressure applied to the dimming glass structure according to an embodiment of the present invention; Figure 5-1 It is a waveform diagram of a square wave applied to a dimming glass layer in the prior art; Figure 5-2 This is a waveform diagram of a sine wave applied to the dimming glass layer in an embodiment of the present invention; In the above figures: 1. First glass layer; 2. Second glass layer; 3. Dimming glass; 3a. First edge; 3b. Second edge; 3c. Third edge; 3d. Fourth edge; 31. Connecting electrode; 32. Solder; 33. External cable; 4. First adhesive layer; 51. First light blocking structure; 51aw. First outer edge; 51an. First inner edge; 52. Second light blocking structure; 6. Second adhesive layer; 7. Vehicle body; LH. Thickness direction; LL. Length direction; LW. Width direction. Detailed Implementation

[0010] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0011] like Figures 1-2As shown, the present invention provides a dimming glass structure, comprising a first glass layer 1, a dimming glass layer 3, and a second glass layer 2 sequentially disposed in the thickness direction LH of the dimming glass structure. The characteristic is that, in the thickness direction LH, a first light blocking structure 51 is disposed between the dimming glass layer 3 and the first glass layer 1, and a second light blocking structure 52 is disposed between the dimming glass layer 3 and the second glass layer 2. On the projection along the thickness direction LH, the first light blocking structure 51 and the second light blocking structure 52 both form a ring structure arranged along the circumference of the dimming glass layer 3. The edge of the dimming glass layer 3 is located outside the inner edge of the first light blocking structure 51 and inside the outer edge of the first light blocking structure 51. The edge of the dimming glass layer 3 is located outside the inner edge of the second light blocking structure 52 and inside the outer edge of the second light blocking structure 52.

[0012] In practical applications, the first / second light-blocking structures generally use dark-colored high-temperature ink materials, which absorb more heat radiation. This creates a significant temperature gradient between the light-blocking structure and the transparent area (the transparent area is the inner region of the inner edge of the light-blocking structure, i.e., the field of view), leading to localized stress and thermal deformation within the glass. Research has shown that the edge of the multi-layered dimming glass layer 3 is a weaker region, and damage is more likely to occur at the edge of the dimming glass layer 3. In this invention, the edge of the dimming glass layer 3 is located outside the inner edge of the light-blocking structure 51, thus avoiding placing the dimming glass layer 3 in an area with a large temperature difference that could cause thermal deformation. In other words, it maintains a certain distance from the thermal deformation area, thereby preventing damage to the dimming layer caused by glass deformation.

[0013] Additionally, the study found that if the edge of the dimming glass layer (i.e. Figure 1 3a) and the outer edge of the light-blocking structure (i.e. Figure 1 If the edge of the dimming glass layer 3 (51aw) is flush with the edge of the light-blocking structure 52, the edge will be stretched more during vehicle operation and vibration, which may cause the layers in the dimming glass layer to separate and be damaged. In this invention, by positioning the edge of the dimming glass layer 3 inside the outer edge of the light-blocking structure 52, a certain distance is created between the edge of the dimming glass layer and the edge position that is stretched more (i.e., 51aw), thus providing better protection for the edge of the dimming glass layer 3. Moreover, it is easier for the first adhesive layer 4 to wrap around the edge of the dimming glass layer 3, which is beneficial for the fixation and protection of the dimming glass layer.

[0014] The material of the first light-blocking structure 51 and / or the second light-blocking structure 52 is high-temperature ink; the visible light reflectance of the high-temperature ink is no greater than 30%. Preferably, the visible light reflectance of the high-temperature ink is no greater than 20%, more preferably no greater than 10%. The high-temperature ink with a visible light reflectance of no greater than 30% is a dark-colored material, preferably black high-temperature ink. The high-temperature ink used for glass in this invention is existing technology. The visible light transmittance of the high-temperature ink is no greater than 5%.

[0015] With the above-described configuration of the present invention, the first light blocking structure 51 and the second light blocking structure 52 on both sides in the thickness direction LH achieve the blocking of the edge of the dimming glass layer 3, preventing the edge of the dimming glass layer 3 from being exposed to sunlight, thereby reducing the problem of accelerated aging of the dimming glass layer 3 under the action of ultraviolet rays.

[0016] Figure 1 Only a partial cross-sectional view of one side along the length direction LL is shown, specifically a schematic diagram showing the positional relationship between the portion of the dimming glass layer near the first edge 3a and the first glass layer 1, second glass layer 2, first light-blocking structure 51, and second light-blocking structure 52. A schematic diagram of the structure of the portion of the dimming glass layer near the third edge 3c is also shown. Figure 1 The structure shown is a symmetrical structure.

[0017] Each edge of the dimming glass layer 3 is located outside the corresponding inner edge of the first light-blocking structure 51 and inside the corresponding outer edge of the first light-blocking structure 51. For example, as Figure 1 As shown, the first edge 3a, the second edge 3b, the third edge 3c, and the fourth edge 3d are arranged sequentially to form a rectangular projection of the dimming glass layer 3. The first edge 3a and the third edge 3c are both parallel to the width direction LW, and the second edge 3b and the fourth edge 3d are both parallel to the length direction LL. The corresponding outer edges of the first light-blocking structure 51 are arranged sequentially to form a rectangular projection of the outer edge of the first light-blocking structure 51; the corresponding inner edges of the first light-blocking structure 51 are arranged sequentially to form a rectangular projection of the inner edge of the first light-blocking structure 51.

[0018] The first edge 3a is located outside the first inner edge 51an of the first light-blocking structure 51 and inside the first outer edge 51aw of the first light-blocking structure 51. The distance between the first edge 3a and the first inner edge 51an is w3, and the distance between the first edge 3a and the first outer edge 51aw is w2. The second edge 3b, the third edge 3c, and the fourth edge 3d have similar positional and spacing relationships with the corresponding inner and outer edges of the first light-blocking structure 51, thus preventing the edges of the dimming glass layer 3 from being directly exposed to sunlight. The projection of the first light-blocking structure 51 coincides with the projection of the second light-blocking structure 52.

[0019] A first adhesive layer 4, which is a light-transmitting material, is provided between the first glass layer 1 and the second glass layer 2 to wrap the dimming glass layer 3 on the outside. Within the projection range of the light blocking structure, the dimming glass layer 3 is connected to the first glass layer 1 in sequence through the first adhesive layer 4 and the first light blocking structure 51, and the dimming glass layer 3 is connected to the second glass layer 2 in sequence through the first adhesive layer 4 and the second light blocking structure 52. Outside the projection range of the light blocking structure, the dimming glass layer 3 is connected to the first glass layer 1 through the first adhesive layer 4, and the dimming glass layer 3 is connected to the second glass layer 2 through the first adhesive layer 4.

[0020] Preferably, the first adhesive layer 4 is PVB adhesive.

[0021] The first adhesive layer has the same or similar light transmittance properties as the first glass layer 1 and the second glass layer 2.

[0022] On the projection along the thickness direction LH, the projections of the first light-blocking structure 51 and the second light-blocking structure 52 coincide. The edge shape of the dimming glass layer 3 is rectangular; the inner and outer edges of the first light blocking structure 51 are both rectangular.

[0023] On the projection along the thickness direction LH, the corresponding outer edges of the first glass layer 1 and the first light blocking structure 51 coincide with each other, and may also coincide with the corresponding outer edges of the first adhesive layer 4; the corresponding outer edges of the second glass layer 2 and the second light blocking structure 52 coincide with each other, and may also coincide with the corresponding outer edges of the first adhesive layer 4. The edge of the dimming glass layer 3 is parallel to the inner and outer edges of the corresponding first light blocking structure 51.

[0024] The distance between the inner edge and the corresponding outer edge of the first light-blocking structure 51 is w2+w3; w2 is the required width for tear resistance of the dimming glass layer 3, and w3 is the required width for edge protection of the dimming glass layer 3.

[0025] With the above-described design of this invention, not only is the tear-resistant width of the dimming glass layer 3 considered, but also the edge protection width of the dimming glass layer 3, thereby improving the protective effect of the light-blocking structure on the dimming glass layer 3. Furthermore, by setting the width of w3, appearance defects at the edges of the dimming glass layer can also be concealed.

[0026] The distance between the edge of the dimming glass layer 3 and the inner edge of the corresponding first light blocking structure 51 is w3; the distance between the edge of the dimming glass layer 3 and the outer edge of the corresponding first light blocking structure 51 is w2.

[0027] w3 ≥ pr × w2 + wx, where the ratio pr ranges from [0.1, 0.2]; wx is the size of the edge defect area of ​​the dimming glass layer 3 (i.e., the size of the edge defect area of ​​the dimming glass layer 3 determined empirically); preferably, the value range of wx is [4mm, 6mm], and more preferably, wx can be 5mm. In practical applications of this embodiment, the value range of w3 can be [10mm, 13mm]. w3 can be set according to the field of view requirements (i.e., the width between the inner areas of the two light-blocking structures on both sides).

[0028] The study found that if the width of the entire light-blocking structure is 1.1 × w², then the 0.1 × w² area near the transparent region is a region with a relatively large temperature difference. By setting the value range of w³ as described above, the edge of the dimming glass layer 3 is made to avoid the region with a relatively large temperature difference within the area of ​​the light-blocking structure, thus providing better protection for the edge of the dimming glass layer 3. In addition, the size wx of the defect area at the edge of the dimming glass layer 3 is also considered when setting w³. If w³ = (0.1 ~ 0.2) × w², the normal edge of the dimming glass layer is already outside the area of ​​large glass thermal deformation. However, if the dimming glass layer has defects, the defective part may still be within the area of ​​large glass thermal deformation, causing the defective part to expand further due to glass deformation. By setting w³ ≥ pr × w² + wx, that is, considering the size wx of the defective area, the defective part is also kept outside the area of ​​large glass thermal deformation.

[0029] w2 = w1 + 15mm, where w1 is the minimum width of the first light-blocking structure 51 required for the strength of the dimming glass structure, and w3 ranges from [10mm, 13mm]. That is, without considering the layering problem of the dimming glass layer, w1 is the minimum width of the first / second light-blocking structure to ensure that the entire dimming glass structure of the multi-layer structure will not be damaged. The width of the light-blocking structure is the distance between the inner edge and the outer edge (e.g., the dimension in the LL direction in the figure). The setting of w1 is in the prior art.

[0030] The projection of the outer rectangular edge of the first glass layer 1 completely coincides with the projection of the outer rectangular edge of the first light-blocking structure 51; the projection of the outer rectangular edge of the second glass layer 2 completely coincides with the projection of the outer rectangular edge of the second light-blocking structure 52.

[0031] The material of the first light-blocking structure 51 and / or the second light-blocking structure 52 is high-temperature ink. The ink material is glass powder, high-temperature pigment, or high-temperature filler powder.

[0032] The first light-blocking structure 51 and the second light-blocking structure 52 of the present invention can be made of high-temperature ink, thereby providing protection for the edge of the dimming glass layer 3, providing glass bonding strength, and providing tear resistance of the dimming layer.

[0033] A connecting electrode 31 is provided on the outer edge of the dimming glass layer 3. The connecting electrode 31 forms the power supply terminal of the dimming glass layer 3. The connecting electrode 31 is electrically connected to the power supply of the dimming glass layer 3 through solder 32. On the projection along the thickness direction LH, the connecting electrode 31 and the solder 32 are both located within the projection range of the first light blocking structure 51. The solder 32 has a dimension of h = 0.6 × h1 in the thickness direction LH, where h1 is the thickness of the dimming glass layer 3.

[0034] By setting the above, we can avoid setting the solder thickness too large, thereby avoiding the problem of black edges (the light-blocking structure absorbing heat from sunlight, causing the solder 32 to expand beyond the thickness of the dimming glass layer 3, resulting in the dimming glass layer 3 tearing).

[0035] The bonding pressure of the dimming glass structure is in the range of [10 Bar, 11 Bar] or [0.55×p1, 0.6×p1], where p1 is the compressive strength of the dimming glass layer 3.

[0036] By setting the lamination pressure, it is possible to avoid the problem of loose bonding between the glass layers in the dimming glass structure due to insufficient lamination pressure, and also to avoid the problem of malfunction of the dimming glass layer due to excessive lamination pressure.

[0037] The input waveform at the power supply terminal of the dimming glass layer 3 is a sine wave. By setting the input waveform of the dimming glass layer to a sine wave, the service life of the dimming glass structure can be effectively improved.

[0038] The upper limit of the power supply of the dimming glass layer 3 is within the range of [5×S]. 玻 6×S 玻 ], S 玻The surface area of ​​the dimming glass layer 3 is denoted as 3.

[0039] With the above settings, the upper limit of the power supply to the dimming glass layer 3 is set to [5×S]. 玻 6×S 玻 When the glass is exposed to sunlight, its internal resistance decreases and the power increases accordingly. However, the maximum power of the dimming glass layer will not exceed the rated maximum power. Therefore, the effect of temperature rise on the dimming glass layer 3 is taken into account, and sufficient margin is reserved.

[0040] Based on the same inventive concept, the present invention also provides a vehicle, including a vehicle body 7 and a window mounted on the vehicle body 7, wherein the window is the aforementioned dimming glass structure. The vehicle body 7 may be a vehicle frame. The dimming glass structure is integrally bonded to the frame. In this embodiment, the dimming glass structure covers the vehicle body 7, that is, the end face of the second glass layer 2 is interconnected with the vehicle body 7 in the circumferential direction through the second adhesive layer 6. Figure 1 In this design, the area enclosed by the second glass layer 2 and the second adhesive layer 6 constitutes the passenger compartment area of ​​the vehicle. The second adhesive layer 6 can be a glass adhesive. The vehicle can be a rail vehicle.

[0041] The embodiments of the present invention are described in detail below.

[0042] Electrochromic glass, the glass can change its light transmittance according to the intensity of light outside the vehicle, ensuring the sightseeing view of passengers in different weather conditions. The dimming glass structure of the present invention includes a first glass layer (located on the outside, i.e., the side away from the passenger compartment), PVB adhesive, dimming glass layer, PVB adhesive, and a second glass layer (located on the inside, i.e., the side closer to the passenger compartment) arranged sequentially in the thickness direction; wherein, the dimming glass layer 3 can be SPD dimming glass. The PVB adhesive on both sides of the dimming glass is an integral structure, thereby wrapping the dimming glass. The selected SPD dimming glass is superior to other technologies on the market in that: (1) it is a flexible structure that can realize curved shape, which is superior to BOE cell (dye liquid crystal) technology (which can only make flat surfaces); (2) the response time is superior to EC (electrochromic) technology (the dimming response time is 3 to 5 minutes); the light transmittance of the dimming glass can be steplessly adjusted between 0.5% and 50%, adapting to the sightseeing needs in different weather conditions.

[0043] Because the dimming glass layer 3 itself is a multi-layered structure, there is a certain shear force between different layers. Under the action of external forces such as vehicle vibration and impact, wind pressure load, and internal forces such as thermal expansion and contraction, problems such as bubbling and delamination of the dimming glass layer, mesh-like cracking at the electrode connection, and controller overheating failure are common in product applications. The dimming glass design method of this invention can solve the above-mentioned series of problems from the following five aspects.

[0044] 1. Black border (light-blocking structure) width design: Conventionally, low-temperature ink (mainly composed of pigments and resins) can be used for the black edges. In this embodiment, the inner perimeter of the first and second glass layers of the dimming glass structure is screen-printed with high-temperature ink. The main components of the high-temperature ink are glass powder, high-temperature pigments, and high-temperature filler powder. The ink is sintered with the window glass at high temperature to form a whole, increasing its adhesion and high-temperature resistance.

[0045] Conventionally, screen-printed ink covers the glass adhesive layer, and the width of the adhesive layer depends on the strength requirements of the laminated glass. In this invention, the glass printing area additionally considers the tearing of the dimming glass layer 3 caused by vibration between the inner and outer sheets of the laminated glass. It also considers UV protection for the edges of the dimming glass layer 3, ensuring that the area where the edges of the dimming glass layer 3 penetrate into the PVB adhesive layer is shielded by light-blocking structures on both sides. This prevents the edges of the dimming glass layer 3 from being exposed to sunlight, thus avoiding the problem of accelerated aging of the dimming glass layer 3 under the action of ultraviolet rays.

[0046] In this invention, the width of the light-blocking structure (i.e., the distance between each inner edge and the corresponding outer edge of the annular structure) considers not only the bonding strength requirements of the laminated glass but also the tear resistance of the edge of the dimming glass layer 3. Based on experimental verification, the width of the light-blocking structure is designed as w = w2 + w3, where w2 is the required tear resistance width of the dimming glass layer 3, and w3 is the required width for edge protection of the dimming glass layer 3. Typically, w2 = w1 + 15mm, where w1 is the required width for glass strength, and w3 is 10mm.

[0047] 2. Solder height design: The dimming glass layer 3 is electro-dimmable. To ensure product aesthetics and secure electrode fixation, the connecting electrode 31 is positioned within the projection range of the first light-blocking structure 51 and the second light-blocking structure 52. Conventionally, the external cable 33 is connected to the connecting electrode 31 of the dimming glass layer 3 via solder 32. The thickness of the solder 32 (i.e., its dimension in the thickness direction LH) is usually set to be comparable to the thickness of the dimming glass layer 3. However, this invention considers the low internal adhesion of the dimming glass layer 3, and the fact that the black edge (light-blocking structure) absorbs heat from sunlight, making the connecting electrode within the projection range more prone to a large temperature rise, leading to thermal expansion. If the thermal expansion of the solder 32 exceeds the thickness of the dimming glass layer 3, it will tear the dimming glass layer 3. Through experimental verification, the height of the solder 32 is set to h = 0.6 × h1, where h1 is the thickness of the dimming glass layer 3. Currently, the thickness h1 of the dimming glass layer 3 in China is approximately 1.2 mm. Figure 3 The diagram shows the connection electrode 31 of the dimming layer connected to the external cable 33 via solder 32. The solder height h is the dimension of the solder in the thickness direction LH. The external power supply for the dimming glass structure is connected to the connection electrode 31 via the external cable 33, thereby supplying power to the dimming glass layer 3.

[0048] 3. Assembly pressure design: The laminated glass is vacuum-laminated, and the lamination pressure for conventional dimming glass structures is 8–9 Bar. Experience shows that in high-temperature outdoor environments, the heat absorbed by the black edge of the glass can cause the local temperature to reach 90°C. Therefore, the lamination pressure must fully consider the impact of thermal expansion and contraction on the layers of the dimming glass. The applicant's research found that insufficient lamination pressure leads to inadequate vacuum, resulting in loose adhesion between the glass layers and in dimming glass layer 3. Experiments verified that at a lamination pressure of 9 Bar, after baking at 90°C for 24 hours, bubbling occurred in dimming glass layer 3 at the black edge of the glass. At a lamination pressure of 12 Bar, after baking at 90°C for 24 hours, wrinkles appeared in dimming glass layer 3 at the connection electrode 32. Further verification showed that when the lamination pressure was set to 10–11 Bar, the dimming glass layer produced no faults after high-temperature baking. The lamination pressure p of the dimming glass structure can be set to 0.55 to 0.6 times p1, where p1 is the compressive strength of the dimming glass layer 3. In this embodiment, the compressive strength of the dimming glass layer 3 of the SPD dimming glass is 18 Bar. Figure 4 The diagram shows the lamination pressure applied to the dimming glass structure. The lamination pressure refers to the pressure applied to the first glass layer and the second glass layer, thereby squeezing the inner surfaces.

[0049] 4. Input waveform design for the power supply terminal of the dimming glass layer: Typically, rail transit vehicles use DC 110V or DC 24V power supplies, requiring a separate controller to control the dimming of the switching glass. During the applicant's research, it was discovered that the dimming glass layer 3 itself can be considered a capacitor layer, and a control power supply with a square wave output waveform will cause a sharp impact on the capacitor's terminals. According to aging tests, the lifespan of the dimming glass layer 3 with a square wave controller output is significantly shorter than that with a sine wave output. By applying a sine wave to the two terminals of the dimming glass layer 3 (i.e., the two connecting electrodes on both sides), designing the input waveform of the dimming glass layer as a sine wave can effectively improve the lifespan of the dimming glass structure. Figure 5-1 The waveform diagram of the square wave applied to the dimming glass layer using existing technology is shown below. Figure 5-2 This is a waveform diagram of the sine wave applied to the dimming glass layer used in this invention.

[0050] 5. Controller power design: Typically, the operating power of the dimming glass layer is 3W / m. 2 However, the applicant discovered during their research that the interior of the dimming glass layer 3 is made of a high-molecular polymer. When the glass is exposed to sunlight, its internal resistance decreases, and the power output increases accordingly, with a maximum power output reaching 5W / m. 2Therefore, the controller power design should consider the impact of temperature rise on the dimming glass layer 3, leaving sufficient margin. Based on application experience, when the rated maximum power of the dimming glass layer is calculated as P = 3 × S... 玻 During the design phase, if the ambient temperature rises (e.g., reaches 35°C), the controller will overheat, and the dimming glass will fail to dim. In this embodiment, the rated maximum power P of the dimming glass layer (i.e., the maximum power that the power supply for the dimming glass layer can provide to the dimming glass layer) is P = 5 × S. 玻 At this time, the controller and dimming glass layer are working normally. 玻 The surface area of ​​the dimming glass layer 3; This method has been tested and can solve problems such as bubbling at the edges of the dimming glass, mesh cracking at the electrodes, and control failure of the dimming glass.

[0051] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0052] The embodiments of the present invention have been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should still fall within the scope of the present invention. After reading this invention, modifications of various equivalent forms of the present invention by those skilled in the art fall within the scope defined by this application. Unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

Claims

1. A dimming glass structure, comprising a first glass layer (1), a dimming glass layer (3), and a second glass layer (2) sequentially disposed in the thickness direction (LH) of the dimming glass structure, characterized in that, In the thickness direction (LH), a first light blocking structure (51) is provided between the dimming glass layer (3) and the first glass layer (1), and a second light blocking structure (52) is provided between the dimming glass layer (3) and the second glass layer (2). On the projection along the thickness direction (LH), the first light blocking structure (51) and the second light blocking structure (52) both form a ring structure arranged circumferentially along the dimming glass layer (3); The edge of the dimming glass layer (3) is located outside the inner edge of the first light blocking structure (51) and inside the outer edge of the first light blocking structure (51). The edge of the dimming glass layer (3) is located outside the inner edge of the second light blocking structure (52) and inside the outer edge of the second light blocking structure (52).

2. The dimming glass structure according to claim 1, characterized in that, The material of the first light-blocking structure (51) and / or the second light-blocking structure (52) is high-temperature ink; The distance between the edge of the dimming glass layer (3) and the inner edge of the corresponding first light blocking structure (51) is w3; w3≥pr×w2+wx, the value of the ratio pr is in the range of [0.1, 0.2]; wx is the size of the defect area at the edge of the dimming glass layer (3); Preferably, the value range of wx is [4mm, 6mm].

3. The dimming glass structure according to claim 1, characterized in that, The distance between the edge of the dimming glass layer (3) and the outer edge of the corresponding first light blocking structure (51) is w2; w2≥w1+15mm, where w1 is the minimum width of the first light blocking structure (51) required by the strength of the dimming glass structure.

4. The dimming glass structure according to claim 1, characterized in that, A first adhesive layer (4) for wrapping the dimming glass layer (3) on the outside is provided between the first glass layer (1) and the second glass layer (2), and the first adhesive layer (4) is a light-transmitting material; The dimming glass layer (3) is connected to the first glass layer (1) in sequence through the first adhesive layer (4) and the first light blocking structure (51); The dimming glass layer (3) is connected to the second glass layer (2) in sequence through the first adhesive layer (4) and the second light blocking structure (52); Preferably, the first adhesive layer (4) is PVB adhesive.

5. The dimming glass structure according to claim 1, characterized in that, On the projection along the thickness direction (LH), the projections of the first light blocking structure (51) and the second light blocking structure (52) coincide; The edge shape of the dimming glass layer (3) is rectangular; the inner and outer edges of the first light blocking structure (51) are both rectangular; Preferably, on the projection along the thickness direction (LH), the corresponding outer edges of the first glass layer (1) and the first light-blocking structure (51) coincide with each other; the corresponding outer edges of the second glass layer (2) and the second light-blocking structure (52) coincide with each other. The edge of the dimming glass layer (3) is parallel to the inner edge of the corresponding first light blocking structure (51); The edge of the dimming glass layer (3) is parallel to the outer edge of the corresponding first light blocking structure (51).

6. The dimming glass structure according to any one of claims 1-5, characterized in that, A connecting electrode (31) is provided on the outer edge of the dimming glass layer (3), and the connecting electrode (31) forms the power supply terminal of the dimming glass layer (3). The connecting electrode (31) is electrically connected to the power supply of the dimming glass layer (3) via solder (32); On the projection along the thickness direction (LH), the connecting electrode (31) and the solder (32) are both located within the projection range of the first light blocking structure (51); The solder (32) has a dimension of h = 0.6 × h1 in the thickness direction (LH), where h1 is the thickness of the dimming glass layer (3).

7. The dimming glass structure according to any one of claims 1-5, characterized in that, The bonding pressure of the dimming glass structure is in the range of [10 Bar, 11 Bar] or [0.55×p1, 0.6×p1], where p1 is the compressive strength of the dimming glass layer (3).

8. The dimming glass structure according to any one of claims 1-5, characterized in that, The input waveform at the power supply end of the dimming glass layer (3) is a sine wave.

9. The dimming glass structure according to any one of claims 1-5, characterized in that, The upper limit of the power supply of the dimming glass layer (3) is within the range of [5×S]. 玻 6×S 玻 ], S 玻 The surface area of ​​the dimming glass layer (3) is denoted as .

10. A vehicle, comprising a vehicle body (7) and windows mounted on the vehicle body (7), characterized in that, The window is a dimming glass structure as described in any one of claims 1-9.

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