Laminated glass for vehicle and vehicle

Abstract

The laminated glass for the vehicle comprises an outer glass plate, an inner glass plate and a connecting layer, and the outer glass plate and the inner glass plate are connected through the connecting layer; the windscreen wiper staying area is arranged on the edge of the bottom of the laminated glass; at least part of the heating assembly is arranged between the outer glass plate and the inner glass plate, the heating assembly comprises a first bus bar, a second bus bar, a third bus bar and a plurality of heating wires, the first bus bar, the second bus bar and the third bus bar are arranged in the connecting layer, and the third bus bar is arranged between the first bus bar and the second bus bar; the first bus bar, the second bus bar and the third bus bar are connected through a plurality of heating wires; at least part of the heating wires are separated by the heating-wire-free area, and a third bus bar used for being electrically connected with the separated heating wires is arranged on the periphery of the heating-wire-free area; wherein the heating-wire-free area is arranged farther away from the bottom edge of the laminated glass relative to the windscreen wiper staying area.

Description

TECHNICAL FIELD

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

[0002] With the popularization of intelligent technologies such as assisted driving and automatic driving, more and more optical signal collection devices such as cameras and laser radars are installed on vehicles to improve the driving experience and safety of the vehicle.

[0003] For a camera installed at the bottom of a laminated glass of a vehicle, the camera needs to obtain a real-time view in the driving direction of the vehicle through the laminated glass of the vehicle. In order to enable the laminated glass to realize defrosting and demisting functions and not affect the working of the camera at the bottom, the bus bar of the camera and the bottom bus bar are connected to avoid the heating wire passing through the camera area. However, when the bus bar of the camera and the bottom bus bar are connected, the wiper stay area near the bottom of the camera bus bar on the laminated glass of the vehicle cannot realize the defrosting and demisting functions. Therefore, how to improve the heating capacity of the wiper stay area below the camera when the camera is arranged at the bottom of the laminated glass and realize the defrosting and demisting functions has become a technical problem to be solved at present. SUMMARY

[0004] In view of the above technical problems, the first aspect of the present application provides a laminated glass for vehicle, characterized in that it comprises: an outer glass sheet, an inner glass sheet and a connecting layer, the outer glass sheet and the inner glass sheet being connected through the connecting layer; a wiper stay area, the wiper stay area being arranged at a bottom edge of the laminated glass; a heating assembly, at least part of the heating assembly being arranged between the outer glass sheet and the inner glass sheet, the heating assembly comprising a first bus bar, a second bus bar and a third bus bar arranged in the connecting layer, and a plurality of heating wires, the third bus bar being arranged between the first bus bar and the second bus bar, and the first bus bar, the second bus bar and the third bus bar being connected through the plurality of heating wires; a non-heating wire area, at least part of the heating wires being separated by the non-heating wire area, and the third bus bar around the non-heating wire area being arranged for electrically connecting the separated heating wires; wherein the non-heating wire area is arranged farther away from the bottom edge of the laminated glass than the wiper stay area.

[0005] In some embodiments, the distance between the non-heating wire area and the bottom edge of the laminated glass is less than the distance between the non-heating wire area and the top edge of the laminated glass.

[0006] In some embodiments, the third busbar is in a U-shaped structure as a whole, and the U-shaped structure has an opening, and the opening of the third busbar is arranged towards the side edge of the connecting layer.

[0007] In some embodiments, the projection of the non-heating wire area and the projection of the wiper parking area do not overlap along the thickness direction of the laminated glass.

[0008] In some embodiments, the first busbar is arranged transversely and extends to the top edge of the connecting layer, the second busbar is arranged transversely and extends to the bottom edge of the connecting layer, and the first busbar, the second busbar and the third busbar are connected by a plurality of heating wires arranged in a straight line, wherein the plurality of heating wires connected to the third busbar are arranged at equal intervals.

[0009] In some embodiments, the heating wires of the laminated glass form a heating wire area, and the projection of the wiper parking area is located within the projection of the heating wire area along the thickness direction of the laminated glass.

[0010] In some embodiments, the first busbar, the second busbar and the third busbar are all metal foils, the metal foils include a first metal foil sub-piece close to the outer glass plate and a second metal foil sub-piece close to the inner glass plate, and the heating wires are arranged between the first metal foil sub-piece and the second metal foil sub-piece to realize electrical connection with the metal foils.

[0011] In some embodiments, the heating assembly further comprises a heating connector, which is arranged between the heating wires and the second metal foil sub-piece.

[0012] In some embodiments, the heating assembly further comprises a heating connector, which is arranged between the second metal foil sub-piece and the inner glass plate.

[0013] In some embodiments, the metal foils are copper foils, and the width A1 of the metal foils ranges from 3mm to 15mm.

[0014] In some embodiments, the cross section of each heating wire has a diameter R, the diameter R ranges from 0.01mm to 0.03mm, and each heating wire has an electrical resistivity of 90-300 ohm / m.

[0015] In some embodiments, the second busbar includes a first portion and two second portions connected thereto, the two second portions are arranged at both ends of the first portion, at least part of the first portion is arranged opposite to the third busbar, and the first portion is arranged closer to the bottom edge of the laminated glass than the second portion.

[0016] In some embodiments, the first portion and the bottom edge of the connecting layer have a minimum distance D1, D1 is greater than or equal to 6mm.

[0017] In some embodiments, the laminated glass further comprises a shielding layer, a communication window is formed on the shielding layer, and the communication window is located within the non-heating wire area.

[0018] The second aspect of the present application provides a vehicle, which comprises the laminated glass provided by the first aspect of the present application.

[0019] The present application has the following beneficial effects due to the above technical solutions: The present application sets a third busbar between the first busbar and the second busbar, and sets the non-heating wire area farther away from the bottom edge of the laminated glass than the wiper stay area. At least a part of the non-heating wire area in the third busbar is not located in the wiper stay area on the laminated glass. Therefore, at least a part of the heating wire connected with the third busbar overlaps with the wiper stay area, so as to heat the area between the third busbar and the bottom edge of the outer glass plate. Thus, when the camera on the vehicle is arranged at the bottom of the laminated glass, the heating capacity of the wiper stay area below the camera is improved, and the defrosting and defogging functions are realized. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be described below.

[0021] Figure 1 FIG. 1 is a structural schematic diagram of a vehicle according to an embodiment of the present application; Figure 2 FIG. 2 is a front view structural schematic diagram of a laminated glass in the prior art; Figure 3 FIG. 3 is a front view structural schematic diagram of a laminated glass according to an embodiment of the present application; Figure 4 FIG. 4 is a partial cross-sectional structural schematic diagram of the laminated glass in FIG. 3 along A-A; Figure 3 FIG. 5 is a partial cross-sectional structural schematic diagram of the laminated glass in FIG. 3 along B-B; Figure 5 FIG. 6 is a partial cross-sectional structural schematic diagram of a laminated glass according to another embodiment of the present application; Figure 6 Figure 3 FIG. 7 is an enlarged structural schematic diagram of the laminated glass in FIG. 6 at B; Figure 7 FIG. 8 is a temperature distribution diagram of a heating assembly in FIG. 3 when heating for 4 minutes according to an embodiment of the present application; Figure 8 ​The temperature profile of the heating assembly disclosed in an embodiment of the present application for heating for 12 minutes.

[0022] BRIEF DESCRIPTION OF DRAWINGS 1, laminated glass; 11, outer glass pane; 111, wiper stay area; 12, inner glass pane; 13, connecting layer; 131, top of connecting layer; 132, bottom of connecting layer; 133, side of connecting layer; 14, communication window; 15, heating assembly; 151, first busbar; 152, second busbar; 1521, first part; 1522, second part 1522; 153, third busbar; 1531, area without heating wire; 1532, opening; 154, heating wire; 1541, area with heating wire; 155, metal foil piece; 1551, first metal foil piece; 1552, second metal foil piece; 156, heating terminal piece; 16, shielding layer; 2, vehicle; 21, vehicle body; 22, camera module; T1, projection of wiper stay area; T2, projection of area without heating wire; T3, projection of area with heating wire; X, length direction of laminated glass; Z, thickness direction of laminated glass. DETAILED DESCRIPTION

[0023] The embodiments of the present application will be described in detail below with reference to the drawings. In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In this document, the term "embodiment" means that the specific features, structures or properties described in conjunction with the embodiment can be included in at least one embodiment of the present application. The phrase appears at various places in the specification does not necessarily refer to the same embodiment, nor is it mutually exclusive or alternative to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. "At least one" refers to one or more (including one, two, three, etc.). In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "length", "width", "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood. In addition, in this specification, the edge of laminated glass refers to a region with a certain width from the end of laminated glass to the center of the maximum surface of laminated glass. In addition, in the "~" or "-" indicating the numerical range, the upper and lower limits are included. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0024] The technical solutions described in the embodiments of the present application can be applied to various types of vehicles, such as fuel cars, gas cars, new energy cars, motor cars, trains, trucks, etc., wherein the new energy car can be a pure electric car, a hybrid car or a range extended car, etc.

[0025] In a first aspect, as an example, Figure 1 A structural schematic diagram of a vehicle 2 provided by an embodiment of the present application is shown. As Figure 1As shown, the vehicle 2 includes a vehicle body 21, a camera module 22, and a laminated glass 1, which can be arranged at any position on the vehicle body 21. For example, the laminated glass 1 can be arranged at the front or rear of the vehicle 2 or on both sides of the vehicle 2. The laminated glass 1 can be used to physically separate the space of the passenger compartment of the vehicle 2 from the space outside the vehicle 2. In an embodiment of the present application, the laminated glass 1 can be used as the front windshield of the vehicle 2 to work together with the camera module 22 (not shown in the figure) of the vehicle 2. In another embodiment of the present application, the laminated glass 1 can also be used as one or more of the side window glass and the rear windshield of the vehicle 2.

[0026] Figure 2 A front view structural schematic diagram of a laminated glass in the prior art is shown, Figure 3 A front view structural schematic diagram of a laminated glass disclosed in an embodiment of the present application is shown; Figure 4 A partial cross-sectional structural schematic diagram of the laminated glass in Figure 3 is shown along the A-A cross section.

[0027] As Figure 2 shown, the laminated glass 1 in the prior art cannot have the heating wire 154 arranged in the trapezoidal area surrounded by the third bus bar 151 due to the connection of the third bus bar 151 and the bus bar at the bottom of the laminated glass. Therefore, the heating wire 154 cannot heat the wiper in this trapezoidal area, thereby affecting the defrosting and defogging ability of the laminated glass 1 in the wiper parking area 111.

[0028] In the second aspect, as Figure 1 and Figures 3-4 shown, in some embodiments of the present application, the laminated glass 1 for the vehicle 2 includes an outer glass sheet 11, an inner glass sheet 12, and a connecting layer 13, the outer glass sheet 11 and the inner glass sheet 12 being connected through the connecting layer 13; a wiper parking area 111, the wiper parking area 111 being arranged at the edge of the bottom of the laminated glass 1; a heating assembly 15, at least part of the heating assembly 15 being arranged in the connecting layer 13, the heating assembly 15 including a first bus bar 151, a second bus bar 152, and a third bus bar 153 arranged in the connecting layer 13, the third bus bar 153 being arranged between the first bus bar 151 and the second bus bar 152, the first bus bar 151, the second bus bar 152, and the third bus bar 153 being connected through a plurality of heating wires 154; a no-heating-wire area 1531 being arranged in the third bus bar 153, at least part of the heating wires 154 being separated by the no-heating-wire area 1531, the third bus bar 153 around the no-heating-wire area 1531 being arranged for electrically connecting the separated heating wires 154, wherein the no-heating-wire area 1531 is arranged farther away from the edge of the bottom of the laminated glass 1 than the wiper parking area 111.

[0029] Specifically, the connecting layer 13 is located between the outer glass plate 11 and the inner glass plate 12 and is used to connect the outer glass plate 11 and the inner glass plate 12. The connecting layer 13 can be a one-piece structure or a split structure formed by splicing multiple parts. In the thickness direction Z of the laminated glass 1, the connecting layer 13 can be a single-layer structure or a multi-layer overlapping structure, which is not particularly limited herein. The material of the connecting layer 13 can be polyvinyl butyral (PVB), ethylene-vinyl acetate copolymer (EVA), or ionomer film (SGP), etc.

[0030] In the present application, the wiper staying area 111 refers to the area where the wiper on the vehicle 2 stays on the glass when the wiper is in a non-working state after the laminated glass 1 is installed on the vehicle 2. Generally, the wiper on the vehicle 2 is arranged on the surface of the outer glass plate 11 away from the inner glass plate 12, and the wiper is arranged on the bottom area of the outer glass plate 11 close to the wheel position of the vehicle 2. Therefore, the wiper staying area 111 on the laminated glass 1 is arranged at the edge of the bottom of the outer glass plate 11. The heating assembly 15 refers to a component on the laminated glass 1 that can generate heat energy when powered. Part or all of the heating assembly 15 is arranged in the connecting layer 13. The heating assembly 15 includes a first bus bar 151, a second bus bar 152, a third bus bar 153, and a plurality of heating wires 154. The first bus bar 151, the second bus bar 152, and the third bus bar 153 are components in the connecting layer 13 of the laminated glass 1 for collecting current on the plurality of heating wires 154, and can be in the form of a wire or a foil. The third bus bar 153 is arranged between the first bus bar 151 and the second bus bar 152, i.e., the first bus bar 151 and the second bus bar 152 are arranged closer to the edge of the connecting layer 13 relative to the third bus bar 153. The third bus bar 153 can be in the form of a closed figure such as a circle, a rectangle, a polygon, etc., or in the form of an open figure such as a U shape or an S shape. The third bus bar 153 is provided with a non-heating wire area 1531, and the non-heating wire area 1531 is not provided with the heating wire 154. That is, part of the heating wire 154 is separated by the non-heating wire area 1531, and the separated heating wire 154 is connected to the third bus bar 153, and the third bus bar 153 is arranged around the non-heating wire area 1531.

[0031] The application sets the third busbar 153 between the first busbar 151 and the second busbar 152, and sets the non-heating wire area 1531 further away from the bottom edge of the laminated glass 1 than the wiper parking area 111. At least a part of the non-heating wire area 1531 in the third busbar 153 is not located in the wiper parking area 111 on the laminated glass 1. Therefore, at least a part of the heating wire 154 connected with the third busbar 153 will overlap the wiper parking area 111 to achieve heating of the area between the third busbar 153 and the edge of the bottom of the outer glass plate 11. Thus, when the camera on the vehicle 2 is arranged at the bottom of the laminated glass 1, the heating capacity of the wiper parking area 111 below the camera is improved, and the defrosting and defogging functions are achieved.

[0032] In some embodiments, the distance between the non-heating wire area 1531 and the bottom edge of the laminated glass 1 is less than the distance between the non-heating wire area 1531 and the top edge of the laminated glass. The non-heating wire area 1531 has a lower edge close to the bottom edge of the laminated glass 1, and an upper edge close to the top edge of the laminated glass 1. The lower edge of the non-heating wire area 1531 and the bottom edge of the laminated glass 1 have a minimum distance d1, and the upper edge of the non-heating wire area 1531 and the top edge of the laminated glass 1 have a minimum distance d2, the value of d1 is less than the value of d2. By setting the non-heating wire area 1531 close to the bottom edge of the laminated glass 1, it is beneficial for the camera on the vehicle to have a larger field of view through the laminated glass 1.

[0033] Figure 6 An enlarged structural schematic view of the laminated glass in Figure 3 at B is shown.

[0034] As Figure 6 shown, in some embodiments, the outer edge of the third busbar 153 is connected with the heating wire 154, and the inner edge of the third busbar 153 forms the non-heating wire area 1531. By arranging the heating wire 154 only on the outer edge of the third busbar 153, the inner edge of the third busbar 153 encloses an area without the heating wire 154. The camera on the vehicle 2 can be arranged corresponding to the non-heating wire area 1531, thereby reducing the influence of the heating wire on the imaging quality of the camera on the vehicle 2, and improving the reliability of the laminated glass 1 in use.

[0035] In some embodiments, the third busbar 153 is in a U-shaped structure as a whole. In this application, the third busbar 153 is generally in a "U" shape. Therefore, an opening 1532 is formed on the third busbar 153. During the production of the laminated glass 1, it is beneficial to reduce the difficulty of extracting air in the connecting layer 13 from the opening 1532 of the third busbar 153, thereby reducing the production time of the laminated glass 1 and improving the production efficiency of the laminated glass 1.

[0036] Please continue to refer to Figure 3 and Figure 6 In some embodiments, the third busbar 153 has an opening 1532, and the opening 1532 is arranged towards the edge of the side portion 133 of the connecting layer. The connecting layer 13 has a top portion, a bottom portion, and two side portions, the bottom portion 132 of the connecting layer is arranged close to the wiper parking area 111, the top portion 131 of the connecting layer is arranged away from the wiper parking area 111, and the two side portions of the connecting layer 13 are located on both sides in the length direction X of the laminated glass 1. The opening 1532 of the third busbar 153 can be towards any one of the edges of the two side portions of the connecting layer 13. By arranging the opening 1532 of the third busbar 153 towards the edge of the side portion 133 of the connecting layer, the heating wires between the first busbar 151, the second busbar 152 and the third busbar 153 can be connected through the opposite two edges of the U-shaped structure. And the electrical connection of the heating wires on both sides of the third busbar 153 can be realized, thereby forming a heating wire-free area 1531 in the third busbar 153. It is beneficial to reduce the influence of the heating wires on the imaging of the camera on the vehicle 2, thereby improving the reliability of the laminated glass 1 in use.

[0037] In some embodiments, along the thickness direction Z of the laminated glass, the projection T2 of the heating wire-free area and the projection T1 of the wiper parking area do not overlap.

[0038] By arranging the projection T1 of the wiper parking area and the projection T2 of the heating wire-free area not to overlap at all, the heating wire-free area 1531 in the third busbar 153 is not located in the wiper parking area 111 on the laminated glass 1. Therefore, the heating wire 154 connected with the third busbar 153 will overlap with the wiper parking area 111 to realize the heating of the area between the third busbar 153 and the bottom edge of the laminated glass 1. Thus, when the camera on the vehicle 2 is arranged at the bottom of the laminated glass 1, the heating capacity of the wiper parking area 111 below the camera is improved, and the defrosting and defogging function is realized.

[0039] In some embodiments, the first busbar 151 is arranged laterally at the edge of the top portion 131 of the connecting layer, the second busbar 152 is arranged laterally at the edge of the bottom portion 132 of the connecting layer, and the first busbar 151, the second busbar 152 and the third busbar 153 are connected by a plurality of heating wires 154 arranged linearly, wherein the plurality of heating wires 154 connected to the third busbar 153 are arranged at equal intervals. The first busbar 151 is arranged at the edge of the top portion 131 of the connecting layer and extends along the edge of the top portion 131 of the connecting layer in the length direction X of the laminated glass 1. The second busbar 152 is arranged at the edge of the bottom portion 132 of the connecting layer and extends along the edge of the bottom portion 132 of the connecting layer in the length direction X of the laminated glass 1. The third busbar 153 is arranged close to the second busbar 152 and is connected to the second busbar 152 by a plurality of heating wires 154 arranged at equal intervals, forming a part of the heating wire area 1541. The third busbar 153 is also connected to the first busbar 151 by a plurality of heating wires 154 arranged at equal intervals, forming another part of the heating wire area 1541. It can be understood that the heating wires 154 arranged at equal intervals also help to reduce the possibility of local hot spots, thereby improving the uniformity of the temperature of the laminated glass 1 during heating. The heating wires 154 in the heating wire area 1541 are arranged linearly, which can uniformly heat the area of the laminated glass 1, thereby achieving the defrosting and demisting function of the laminated glass 1. The linear arrangement of the heating wires 154 only means that the overall arrangement direction of the heating wires 154 is along a straight line, and the heating wires 154 themselves can be arranged in a non-linear shape, such as the heating wires 154 as a whole in a wave shape or the edges of the heating wires 154 in a wave shape. In some embodiments, the heating wires 154 of the laminated glass 1 form the heating wire area 1541, and the projection T1 of the wiper rest area is located within the projection T3 of the heating wire area in the thickness direction Z of the laminated glass 1. The projection T1 of the wiper rest area is located within the projection T3 of the heating wire area, which means that the edge of the projection T1 of the wiper rest area does not exceed the edge of the projection T3 of the heating wire area. Thus, the heating wires 154 can fully heat the entire wiper rest area 111, which helps to improve the defrosting and demisting effect of the laminated glass 1 in the entire wiper rest area 111.

[0040] Please continue to refer to Figures 3-4In some embodiments, the first bus bar 151, the second bus bar 152 and the third bus bar 153 are all metal foil pieces 155, which include a first metal foil sub-piece 1551 close to the outer glass plate 11 and a second metal foil sub-piece 1552 close to the inner glass plate 12. The heating wire 154 is arranged between the first metal foil sub-piece 1551 and the second metal foil sub-piece 1552 to achieve electrical connection with the metal foil piece 155. The first bus bar 151, the second bus bar 152 and the third bus bar 153 all have a foil shape as a whole and are made of metal material. Preferably, the material of the first bus bar 151, the second bus bar 152 and the third bus bar 153 can be copper foil. The metal foil piece 155 includes the first metal foil sub-piece 1551 and the second metal foil sub-piece 1552, which also have a foil shape as a whole. The first metal foil sub-piece 1551 and the second metal foil sub-piece 1552 are oppositely arranged, and preferably, the first metal foil sub-piece 1551 and the second metal foil sub-piece 1552 are completely identical in size. The thickness of the first metal foil sub-piece 1551 and the second metal foil sub-piece 1552 can be 0.02mm-0.08mm. The heating wire 154 is arranged between the first metal foil sub-piece 1551 and the second metal foil sub-piece 1552, and the heating wire 154 is made of metal material to achieve electrical connection with the metal foil piece 155. Preferably, the material of the heating wire 154 is tungsten. Designing the first bus bar 151, the second bus bar 152 and the third bus bar 153 as the metal foil piece 155 not only reduces the resistance of the heating assembly 15, but also increases the heat dissipation area of the heating assembly 15. The possibility of local hot spots at the connection between the first bus bar 151, the second bus bar 152, the third bus bar 153 and the heating wire 154 is reduced, thereby improving the uniform temperature performance of the laminated glass 1 in use.

[0041] In some embodiments, the heating assembly 15 further includes a heating connector piece 156 arranged between the heating wire 154 and the second metal foil sub-piece 1552. The heating connector piece 156 refers to a component on the heating assembly 15 for electrically connecting the first bus bar 151 and the second bus bar 152 with the electrical circuit in the vehicle 2. The heating connector piece 156 is generally connected with the first bus bar 151 and the second bus bar 152 by welding. Arranging the heating connector piece 156 between the heating wire 154 and the second metal foil sub-piece 1552, the heating connector piece 156 can be indirectly connected through the heating wire 154 and the first metal foil sub-piece 1551, and welded with the second metal foil sub-piece 1552. This is conducive to improving the stability of the connection between the heating connector piece 156 and the metal foil piece 155, thereby improving the reliability of the laminated glass 1 in use.

[0042] Figure 5A partial cross-sectional structure of the laminated glass disclosed by another embodiment of the present application is shown.

[0043] Please continue to refer to Figures 3-5 In some embodiments, the heating assembly 15 further comprises a heating joint piece 156, which is arranged between the second metal foil sub-piece 1552 and the inner glass. By arranging the heating joint piece 156 between the second metal foil sub-piece 1552 and the inner glass, the first metal foil sub-piece 1551 and the second metal foil sub-piece 156 can be directly connected with the heating wire 154, which is conducive to improving the stability of the connection between the heating wire 154 and the metal foil piece 155.

[0044] Please refer to Figure 6 In some embodiments, the material of the metal foil piece 155 is copper foil, and the width A1 of the metal foil piece 155 ranges from 3mm to 15mm. In the present application, the width A1 of the metal foil piece 155 can be specifically 3mm, 5mm, 6mm, 8mm, 10mm, 12mm, 15mm and the like, and the range with any two of the above specific values as the end points, and preferably, the width A1 of the metal foil piece 155 ranges from 6mm to 10mm.

[0045] By setting the width A1 of the metal foil piece 155 to range from 3mm to 15mm, the present application keeps the resistivity and heat dissipation area of the metal foil piece 155 within a reasonable range, and takes into account the overcurrent capacity of the laminated glass 1 and low-cost manufacturing. If the width A1 of the metal foil piece 155 is less than 3mm, it will result in too large resistance and not enough heat dissipation area of the metal foil piece 155, which is easy to produce hot spots on the metal foil piece 155. If the width A1 of the metal foil piece 155 is greater than 15mm, it will result in waste of manufacturing materials of the metal foil piece 155, which is not conducive to reducing the manufacturing cost of the laminated glass 1.

[0046] In some embodiments, each heating wire 154 has a cross-section with a diameter R, ranging from 0.01 mm to 0.03 mm, and each heating wire 154 has a resistivity of 90-300 ohm / m. Therefore, the heating wire 154 can generate suitable heat, enabling the laminated glass 1 to perform both defogging and defrosting functions without overheating and causing it to fail. This improves the reliability of the laminated glass 1 during use. In this application, the cross-section of the heating wire 154 is approximately circular. The diameter R of the cross-section of the heating wire 154 can be specifically 0.01 mm, 0.02 mm, 0.03 mm, etc., or any two of these values ​​as endpoints. Preferably, the diameter R ranges from 0.015 mm to 0.03 mm. The resistivity of each heating wire 154 can be specifically 90 ohm / m, 100 ohm / m, 120 ohm / m, 150 ohm / m, 200 ohm / m, 250 ohm / m, 280 ohm / m, 300 ohm / m, or any two of the above specific values ​​as endpoints. Preferably, the resistivity of the heating wire 154 is in the range of 120-200 ohm / m.

[0047] Figure 7 This paper shows a temperature distribution diagram of a heating assembly disclosed in an embodiment of the present application after heating for 4 minutes. Figure 8 The diagram shows the temperature distribution of a heating assembly disclosed in one embodiment of this application after 12 minutes of heating. It should be noted that... Figure 7 and Figure 8 The values ​​on the left vertical axis are expressed in scientific notation. In the diagram, 'e' represents 10, the sign after 'e' indicates positive or negative, and the value after 'e' represents the exponent; for example, +001 here means the exponent is 10 to the power of 1. For example... Figure 7 4.180e+001 represents 41.8 degrees Celsius (°C), and so on.

[0048] Please refer to Figure 7 and Figure 8 In some embodiments of this application, the cross-sectional diameter R of each heating wire 154 is 0.01mm-0.03mm, each heating wire 154 has a resistivity of 90-300 ohm / m, and the voltage on the heating assembly 15 is 14V. After heating for 4 minutes, the simulated temperature conditions are as follows... Figure 7As shown. It can be seen that the maximum temperature of laminated glass 1 in the area where heating wire 154 is located does not exceed 41.8 degrees Celsius. Laminated glass 1 appears red and orange overall (i.e., the temperature of laminated glass 1 is in the range of 3.052e+001~3.616e+001 degrees Celsius), but no gray areas appear (i.e., the temperature of laminated glass 1 is above 4.180e+001 degrees Celsius or below 2.301e+001 degrees Celsius). This meets the design requirement that the maximum temperature on laminated glass 1 is less than 70 degrees Celsius. After heating for 12 minutes, as... Figure 8 As shown, the maximum temperature of the laminated glass 1 in the area where the heating wire 154 is located does not exceed 52.2 degrees Celsius. That is, the laminated glass 1 appears red and orange overall (i.e., the temperature of the laminated glass 1 is within the range of 3.052e+001 to 3.616e+001 degrees Celsius), but no gray areas appear (i.e., the temperature of the laminated glass 1 is above 5.220e+001 degrees Celsius or below 2.301e+001 degrees Celsius). This meets the design requirement that the maximum temperature on the laminated glass 1 is less than 70 degrees Celsius.

[0049] As can be seen, during the 12-minute heating process, there were areas in the laminated glass 1 where the temperature exceeded 52.2 degrees Celsius. Therefore, this invention demonstrates that by setting a third busbar 153 at the bottom of the laminated glass 1 and placing a heating wire of appropriate diameter and resistivity on the wiper rest area 111, uniform heating of the wiper rest area 111 is achieved, effectively improving the defrosting and defogging effect of the entire wiper rest area 111.

[0050] Please continue to refer to this. Figure 3In some embodiments, the second busbar 152 includes a first portion 1521 and two second portions 1522. The first portion 1521 is partially or entirely opposite to the third busbar 153. The two second portions 1522 are located at the two ends of the first portion 1521 and extend towards the edges of the side portions 133 of the connecting layer 132. The first portion 1521 is closer to the bottom edge of the laminated glass 1 than the second portions 1522. The first portion 1521 of the second busbar 152 refers to the portion opposite to the third busbar 153. In the length direction X of the laminated glass 1, the length of the first portion 1521 can be the same as or greater than the length of the side of the third busbar 153. Since the length of the heating wire 154 between the first busbar 151 and the second busbar 152 is generally longer at the two sides of the laminated glass 1 than at the middle of the laminated glass 1, the two second portions 1522 are arranged at the two ends of the first portion 1521 and extend towards the edges of the side portions 133 of the connecting layer 132. The length of the heating wire between the second portion 1522 of the second busbar 152 and the first busbar 151 is substantially equal to the length of the heating wire at the two sides of the laminated glass 1, so that the heat generated on the laminated glass 1 is substantially equal, which helps to reduce the possibility of local hot spots generated by the heating wire 154 and improve the uniformity of the laminated glass 1 in use.

[0051] For reference Figure 6 In some embodiments, the distance D1 between the first portion 1521 and the edge of the bottom 132 of the connecting layer 132 is greater than or equal to 6 mm. In this application, the distance D1 between the first portion 1521 and the edge of the bottom 132 of the connecting layer 132 can be 6 mm, 8 mm, 10 mm, or any range with two of the above specific values as endpoints. If the distance D1 between the first portion 1521 of the second busbar 152 and the edge of the bottom is less than 6 mm, the laminated glass 1 is prone to seal failure during use, which can cause the second busbar 152 to be corroded by moisture in the air and increase the risk of electric leakage. Therefore, the distance D1 between the first portion 1521 and the edge of the bottom is greater than or equal to 6 mm, which helps to reduce the risk of electric leakage of the second busbar 152 and improve the reliability of the laminated glass 1 in use.

[0052] For reference Figure 1 and Figure 6 In some embodiments, the laminated glass 1 further includes a shielding layer 16 and a communication window 14. The communication window 14 is formed in the shielding layer 16. The communication window 14 is located in the heating wire-free area 1531.

[0053] Specifically, the shielding layer 16 refers to the opaque part of the laminated glass 11. The material of the shielding layer 16 can be selected from one or more of black ceramic ink, brown ceramic ink, black ultraviolet ink, and brown ultraviolet ink. The shielding layer 16 can be formed by screen printing, inkjet printing, or the like. The thickness of the shielding layer 16 is in micrometers, and the thickness of the shielding layer 16 can be 5 to 40 micrometers. The light-transmitting part in the shielding layer 16 on the laminated glass 11 forms the communication window 14, which refers to the area on the laminated glass 11 for optical signal transmission. The shielding layer 16 can be provided on the second surface or the fourth surface of the laminated glass 11 (i.e., the surface of the outer glass plate 11 and the inner glass plate 12 close to the passenger compartment of the vehicle 2), and the shielding layer 16 can also be provided on both the second surface and the fourth surface of the laminated glass 11. The communication window 14 is located within the non-heating wire area 1531 means that, in the thickness direction of the laminated glass 1, the orthogonal projection of the communication window 14 is located within the orthogonal projection of the non-heating wire area 1531. By setting the communication window 14 within the non-heating wire area 1531, the influence of the heating wire 154 on the imaging of the camera on the vehicle 2 is reduced, which is conducive to improving the reliability of the laminated glass 1 in use.

[0054] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A laminated glass for vehicles, characterized in that, include: An outer glass panel, an inner glass panel, and a connecting layer, wherein the outer glass panel and the inner glass panel are connected by the connecting layer; A wiper stop area, wherein the wiper stop area is located at the bottom edge of the laminated glass; A heating assembly, at least a portion of which is disposed between the outer glass plate and the inner glass plate, the heating assembly including a first busbar, a second busbar, a third busbar and a plurality of heating wires disposed in the connecting layer, the third busbar being disposed between the first busbar and the second busbar, and the first busbar, the second busbar and the third busbar being connected by the plurality of heating wires; A heating wire-free area, in which at least a portion of the heating wires are isolated, and a third busbar for electrically connecting the isolated heating wires is provided around the heating wire-free area; The area without heating wires is located further away from the bottom edge of the laminated glass than the wiper resting area.

2. The laminated glass according to claim 1, wherein the distance between the region without heating wires and the bottom edge of the laminated glass is less than the distance between the region without heating wires and the top edge of the laminated glass.

3. The laminated glass according to claim 1, wherein the third busbar is configured in a U-shape, the U-shape having an opening, and the opening of the third busbar facing the side edge of the connecting layer.

4. The laminated glass according to claim 1, wherein the projection of the area without heating wires and the projection of the wiper dwell area do not overlap along the thickness direction of the laminated glass.

5. The laminated glass according to claim 1, wherein a first busbar extends laterally to the top edge of the connecting layer, a second busbar extends laterally to the bottom edge of the connecting layer, and a plurality of heating wires extend linearly between the first busbar, the second busbar, and the third busbar, wherein... The heating wires connected to the third busbar are arranged at equal intervals.

6. The laminated glass according to claim 1, wherein the heating line of the laminated glass forms a heating line region, and the projection of the wiper dwell area is located within the projection of the heating line region along the thickness direction of the laminated glass.

7. The laminated glass according to claim 1, wherein the first busbar, the second busbar, and the third busbar are all metal foils, the metal foils include a first metal foil sub-piece near the outer glass plate and a second metal foil sub-piece near the inner glass plate, and the heating wire is disposed between the first metal foil sub-piece and the second metal foil sub-piece to achieve electrical connection with the metal foils.

8. The laminated glass according to claim 7, wherein the heating assembly further comprises a heating connector disposed between the heating wire and the second metal foil component.

9. The laminated glass according to claim 7, wherein the heating assembly further comprises a heating connector disposed between the second metal foil component and the inner glass plate.

10. The laminated glass according to claim 7, wherein the material of the metal foil is copper foil, and the width A1 of the metal foil ranges from 3mm to 15mm.

11. The laminated glass according to claim 1, wherein each of the heating wires has a cross-section with a diameter R ranging from 0.01 mm to 0.03 mm, and each of the heating wires has a resistivity of 90-300 ohm / m.

12. The laminated glass according to claim 1, wherein the second busbar includes a first portion and two second portions connected together, the two second portions being disposed at both ends of the first portion, at least a portion of the first portion being disposed opposite to the third busbar, and the first portion being disposed closer to the bottom edge of the laminated glass than the second portions.

13. The laminated glass according to claim 12, wherein, The first part and the bottom edge of the connecting layer have a minimum distance D1, where D1 is greater than or equal to 6 mm.

14. The laminated glass according to claim 1, wherein the laminated glass further comprises a shielding layer, the shielding layer having a communication window, the communication window being located within the area without heating wires.

15. A vehicle, characterized in that, The vehicle includes laminated glass as claimed in any one of claims 1 to 14.

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