Electric heating glass and vehicle

Abstract

The invention provides electric heating glass and a vehicle. The electric heating glass comprises a glass body, a first heating structure, a second heating structure and an insulating part. The glass body comprises an outer glass sheet, a middle layer and an inner glass sheet which are stacked in sequence; the first heating structure is positioned between the inner glass sheet and the middle layer; the second heating structure is positioned between the outer glass sheet and the middle layer; the insulating part is located on at least one side of the middle layer in the thickness direction and further located between the first heating structure and the second heating structure, and the melting point of the insulating part is larger than that of the middle layer so that the first heating structure and the second heating structure can be electrically isolated. According to the technical scheme, the situation that the heating structures located on the two sides of the middle layer penetrate through the middle layer to make contact with the short circuit can be prevented.

Description

Technical Field

[0001] This application relates to the technical field of automobiles, and particularly to an electrically heated glass and a vehicle. Background Art

[0002] Heating structures are usually provided in window glass for heating to achieve its defogging and defrosting functions and ensure driving safety. Due to reasons such as different heating positions or different constituent materials, different heating structures are arranged at different positions on the window glass. Among them, some heating structures are isolated by an intermediate layer.

[0003] During the manufacturing process of window glass, the lamination process requires applying high temperature and high pressure to the entire glass to promote the fusion of the outer glass, the intermediate layer, and the inner glass into a whole. The high temperature during the lamination process will cause partial melting of the intermediate layer and have a certain fluidity, so that the outer glass and the inner glass can be better bonded. However, for glass products with multiple heating structures, the melting of the intermediate layer may cause the heating structures on both sides of the intermediate layer to penetrate the intermediate layer and contact short-circuit, thereby having an adverse impact on the safety performance of the window glass. Summary of the Invention

[0004] Embodiments of this application provide an electrically heated glass and a vehicle, which can prevent the heating structures on both sides of the intermediate layer from penetrating the intermediate layer and contacting short-circuit.

[0005] In a first aspect, this application provides an electrically heated glass, which includes:

[0006] A glass body, which includes an outer glass, an intermediate layer, and an inner glass arranged in a stacked manner in sequence;

[0007] A first heating structure, which is located between the inner glass and the intermediate layer;

[0008] A second heating structure, which is located between the outer glass and the intermediate layer; and

[0009] An insulating member, which is located on at least one side in the thickness direction of the intermediate layer and is also located between the first heating structure and the second heating structure. The melting point of the insulating member is greater than the melting point of the intermediate layer for electrically isolating the first heating structure and the second heating structure.

[0010] It can be understood that in special weather, fogging and frosting are likely to occur on the surface of the window glass. Especially for the front windshield of a vehicle, fogging and frosting will seriously interfere with the driver's line of sight and affect driving safety. Therefore, a heating structure is usually provided in the window glass to heat the glass to achieve the purpose of defogging or defrosting. Due to reasons such as different heating positions or different constituent materials, different heating structures are set at different positions of the window glass. Among them, some heating structures need to be isolated by an intermediate layer. For example, a silver paste heating structure is provided between the outer glass and the intermediate layer, a tungsten wire heating structure is provided between the inner glass and the intermediate layer, and the tungsten wire heating structure and the silver paste heating structure are isolated by the intermediate layer. However, during the lamination process of the window glass, high-temperature heating is required to melt the intermediate layer so that the melted intermediate layer can better connect the outer glass and the inner glass together. However, after the intermediate layer melts, the heating structures originally located on both sides in the thickness direction of the intermediate layer will come into direct contact, thereby causing a short circuit and resulting in the explosion of the window glass.

[0011] Therefore, in the embodiments of the present application, by providing an insulating member between the second heating structure and the first heating structure and ensuring that the melting point of the insulating member is greater than the melting point of the intermediate layer, when the intermediate layer melts due to heating during the lamination process, the insulating member located between the second heating structure and the first heating structure will not melt. The insulating member can block between the second heating structure and the first heating structure, playing a role of insulation protection and avoiding the situation of direct contact and short circuit between the second heating structure and the first heating structure. That is, the insulating member can electrically isolate the second heating structure and the first heating structure. In addition, on the basis of avoiding short circuits, the embodiments of the present application do not affect the lamination process of the electrically heated glass, ensuring the stability and reliability of the electrically heated glass.

[0012] In a possible implementation manner, the electrically heated glass includes a first region and a second region. The second region is circumferentially connected to the periphery of the first region. The first heating structure is located in the first region and the second region, and the second heating structure is located in the second region;

[0013] In the thickness direction of the electrically heated glass, there is at least a partially overlapping region where the first heating structure and the second heating structure overlap in the second region, and the insulating member is at least located in the overlapping region between the first heating structure and the second heating structure.

[0014] In a possible implementation manner, the electrically heated glass includes a first region and a second region. The second region is circumferentially connected to the periphery of the first region. The first heating structure is located in the first region and the second region, and the second heating structure is located in the second region;

[0015] In the thickness direction of the electro-heating glass, the first heating structure and the second heating structure are spaced apart in the second region, and the insulating member covers at least one of the first heating structure located in the second region and the second heating structure located in the second region.

[0016] In a possible implementation manner, the first heating structure includes a connected first heating body and a first bus bar. The first bus bar is located in the second region. One end of the first heating body is located in the second region, and the first heating body bends and extends in the first region. The other end of the first heating body is located in the second region. In the thickness direction of the electro-heating glass, there is at least a partially overlapping overlapping region or a spaced arrangement between the first bus bar and the second heating structure in the second region.

[0017] In a possible implementation manner, the electro-heating glass includes a wiper storage area, and part of the second region forms the wiper storage area;

[0018] The first bus bar, part of the first heating body, the second heating structure, and the insulating member are all located in the wiper storage area.

[0019] In a possible implementation manner, the insulating member is located between the second heating structure and the intermediate layer, and the projection of the insulating member on the intermediate layer along the thickness direction of the intermediate layer covers at least part of the projection of the second heating structure on the intermediate layer along the thickness direction of the intermediate layer.

[0020] In a possible implementation manner, the insulating member includes a plurality of sub-structures, and the plurality of sub-structures are arranged in sequence along the extension direction of the second heating structure. The projection of each sub-structure on the intermediate layer along the thickness direction of the intermediate layer covers part of the projection of the second heating structure on the intermediate layer along the thickness direction of the intermediate layer, and a gap is formed between two adjacent sub-structures.

[0021] In a possible implementation manner, in the extension direction of the second heating structure, the length L1 of each sub-structure satisfies the relational expression: 200mm ≤ L1 ≤ 300mm.

[0022] In a possible implementation manner, the distance L2 between two adjacent sub-structures satisfies the relational expression: 10mm ≤ L2 ≤ 20mm.

[0023] In a possible implementation, the insulating member is located between the first heating structure and the intermediate layer, and a projection of the insulating member on the intermediate layer in the thickness direction of the intermediate layer covers at least a part of a projection of the first bus bar on the intermediate layer in the thickness direction of the intermediate layer.

[0024] In a possible implementation, a projection of the first bus bar on the intermediate layer in the thickness direction of the intermediate layer partially overlaps with a projection of the second heating structure on the intermediate layer in the thickness direction of the intermediate layer to form an overlapping area, and a projection of the insulating member on the intermediate layer in the thickness direction of the intermediate layer covers at least the overlapping area.

[0025] In a possible implementation, a projection of the first bus bar on the intermediate layer in the thickness direction of the intermediate layer is spaced apart from a projection of the second heating structure on the intermediate layer in the thickness direction of the intermediate layer, and a projection of the insulating member on the intermediate layer in the thickness direction of the intermediate layer covers at least a part of a projection of the first bus bar on the intermediate layer in the thickness direction of the intermediate layer.

[0026] In a possible implementation, the first heating body is a tungsten wire.

[0027] In a possible implementation, the second heating structure includes a second heating body and a second bus bar connected to each other. The second heating body extends along the width direction of the glass body, and the second heating body is a silver paste heating wire.

[0028] In a possible implementation, the insulating member is a polyimide tape, a Teflon tape, or a polyethylene terephthalate tape.

[0029] In a possible implementation, the electrically heated glass further includes a shielding layer. The shielding layer is connected to at least one of a surface of the outer glass facing the intermediate layer, a surface of the inner glass facing the intermediate layer, and a surface of the inner glass facing away from the intermediate layer. The shielding layer is located in the second region and covers the second heating structure, the insulating member, and a part of the first heating structure.

[0030] In a second aspect, the present application further provides a vehicle. The vehicle includes a body sheet metal and the electrically heated glass as described above. The electrically heated glass is installed on the body sheet metal. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic structural diagram of a vehicle provided by an embodiment of the present application;

[0032] Figure 2This is a schematic structural diagram of the electrically heated glass provided in an embodiment of the present application;

[0033] Figure 3 This is a structural schematic diagram of a glass body provided in an embodiment of the present application;

[0034] Figure 4 It is along Figure 3 A schematic cross-sectional view of a portion of the structure of the glass body obtained by cutting along the cutting line AA shown;

[0035] Figure 5 It is a perspective schematic diagram of a partial structure of the electrically heated glass provided in an embodiment of the present application.

[0036] Reference numerals:

[0037] Vehicle 200, body sheet metal 210, electrically heated glass 100, glass body 10, first heating structure 20, second heating structure 30, insulating member 40, outer glass 11, middle layer 12, inner glass 13, first surface 111, second surface 112, third surface 131, fourth surface 132, first area 14, second area 15, wiper storage area 16, first partition 151, second partition 152, first heating body 21, first busbar 22, first sub-section 221, second sub-section 222, first sub-line 2211, second sub-line 2212, third sub-line 2221, fourth sub-line 2222, second heating body 31, substructure 41, length L1 of substructure 41, spacing L2 between two adjacent substructures 41, shielding layer 50. DETAILED DESCRIPTION

[0038] For ease of understanding, the terms involved in the embodiments of the present application are first explained.

[0039] And / or: It is just a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0040] Multiple: refers to two or more than two.

[0041] Connection: should be understood in a broad sense. For example, A and B are connected, which can be either directly connected or indirectly connected through an intermediary.

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the accompanying drawings in the embodiments of the present application. It should be noted that the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0043] An embodiment of the present application provides an electrically heated glass and a vehicle.

[0044] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of a vehicle 200 provided by an embodiment of the present application. The vehicle 200 may include a body sheet metal 210 and an electrically heated glass 100. The electrically heated glass 100 is installed on the body sheet metal 210. Among them, the electrically heated glass 100 may be one or more of the front windshield, rear windshield, sunroof glass, side window glass, and corner window glass of the vehicle 200.

[0045] In the following, the electrically heated glass 100 being the front windshield of the vehicle 200 will be taken as an example for illustration, but it should be understood that this is not limiting.

[0046] It should be noted that Figure 1 is only for schematically describing the connection relationship between the body sheet metal 210 and the electrically heated glass 100, and does not specifically limit the connection positions, specific structures, and quantities of each device. In some other embodiments of the present application, the vehicle 200 may include more or fewer components than shown in the figure, or combine certain components, or split certain components, or have different component arrangements. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0047] In the following, the structure of the electrically heated glass 100 will be described in detail through three specific embodiments.

[0048] The first embodiment:

[0049] Please refer to Figure 2 , Figure 2 which is a schematic structural diagram of an electrically heated glass 100 provided by an embodiment of the present application. For convenience of illustration, taking the dotted line as the boundary, the shaded area is the second area 15, and the area surrounded by the shade is the first area 14. However, it should be noted that the shade is only an exemplary representation of the area division of the first area 14 and the second area 15, and does not represent the actual sizes of the first area 14 and the second area 15.

[0050] For ease of description, the length direction of the electrically heated glass 100 is defined as the X direction, the width direction of the electrically heated glass 100 is defined as the Y direction, and the thickness direction of the electrically heated glass 100 is defined as the Z direction. The X direction, the Y direction, and the Z direction are perpendicular to each other.

[0051] The electrically heated glass 100 may include a first area 14 and a second area 15. The first area 14 is located in the center of the electrically heated glass 100 and provides visibility for the driver and passengers in the passenger compartment, ensuring driving safety. Specifically, the first area 14 is the light-transmitting area of the electrically heated glass 100. The second area 15 surrounds and connects to the periphery of the first area 14 and provides shielding for the edges of the electrically heated glass 100. Specifically, the second area 15 forms a wiper storage area 16. The wipers are located within the wiper storage area 16 when not in use. Specifically, the second area 15 may include a first subarea 151 and a second subarea 152. The second subarea 152 is positioned opposite the first subarea 151 along the length of the electrically heated glass 100 (the X direction in the figure). The first subarea 151 is the area of the second area 15 away from the sunroof glass. The first subarea 151 forms the wiper storage area 16. The second subarea 152 is an area in the second area 15 that is close to the sunroof glass.

[0052] Please refer to Figure 1 and Figure 2 The electrically heated glass 100 may include a glass body 10, a first heating structure 20, a second heating structure 30, and an insulating member 40. The first heating structure 20, the second heating structure 30, and the insulating member 40 are all connected to the glass body 10. The first heating structure 20 and the second heating structure 30 are used to heat the glass body 10 to achieve the defrosting and defogging functions of the electrically heated glass 100. In the thickness direction of the electrically heated glass 100 (Z direction in the figure), the insulating member 40 is located between the first heating structure 20 and the second heating structure 30 to electrically isolate the first heating structure 20 from the second heating structure 30.

[0053] Please refer to Figure 3 and Figure 4 , Figure 3 This is a structural diagram of the glass body 10 provided in an embodiment of the present application. Figure 4 It is along Figure 3 The illustrated section line AA is a schematic cross-sectional view of a portion of the structure of the glass body 10 .

[0054] The glass body 10 may include an outer sheet glass 11, an intermediate layer 12, and an inner sheet glass 13. In the thickness direction of the glass body 10 (the illustrated Z direction), the inner sheet glass 13, the intermediate layer 12, and the outer sheet glass 11 are sequentially stacked. The intermediate layer 12 is connected between the inner sheet glass 13 and the outer sheet glass 11. Among them, the outer sheet glass 11 is close to the outside of the vehicle 200. The inner sheet glass 13 is close to the inside of the vehicle 200. Exemplarily, the color of the outer sheet glass 11 may be dark green (SG), and the color of the inner sheet glass 13 may be transparent (C). Or, the color of the outer sheet glass 11 may be transparent (C), and the color of the inner sheet glass 13 may be dark green (SG). To meet the light transmittance requirements of the glass body 10. In addition, the thickness of the outer sheet glass 11 may be 2.1 mm, the thickness of the intermediate layer 12 may be 0.76 mm, and the thickness of the inner sheet glass 13 may be 2.1 mm to ensure the reliability and safety of the glass body 10 during use.

[0055] The outer sheet glass 11 may include a first surface 111 and a second surface 112. The second surface 112 and the first surface 111 are oppositely arranged in the thickness direction of the outer sheet glass 11 (the illustrated Z direction). Among them, the first surface 111 is the surface of the outer sheet glass 11 facing the outside of the vehicle 200, that is, the appearance surface of the glass body 10. The second surface 112 is the surface of the outer sheet glass 11 facing the inside of the vehicle 200.

[0056] The inner sheet glass 13 may include a third surface 131 and a fourth surface 132. The fourth surface 132 and the third surface 131 are oppositely arranged in the thickness direction of the inner sheet glass 13 (the illustrated Z direction). Among them, the third surface 131 is the surface of the inner sheet glass 13 facing the outside of the vehicle 200. The fourth surface 132 is the surface of the inner sheet glass 13 facing the inside of the vehicle 200.

[0057] The intermediate layer 12 is connected between the second surface 112 of the outer sheet glass 11 and the third surface 131 of the inner sheet glass 13. The material of the intermediate layer 12 may be polyvinyl butyral (PVB).

[0058] Hereinafter, an example will be described in which a part of the first heating structure 20 and all of the second heating structure 30 are located in the second region 15 of the electrically heated glass 100. However, it should be understood that in some other embodiments, the first heating structure 20 and the second heating structure 30 may also be located in other regions of the electrically heated glass 100. That is, for any other different heating structures located on both sides of the intermediate layer 12 in the thickness direction, the solution proposed in this embodiment can be applied on the basis of no contradiction. For example, different heating structures located on both sides of the intermediate layer 12 in the thickness direction of the rear windshield can also be applied to the solution proposed in this embodiment on the basis of no contradiction.

[0059] Please refer to Figure 2 、 Figure 3 and Figure 5 , Figure 5 which is a perspective view of a partial structure of the electric heating glass 100 provided by an embodiment of the present application.

[0060] The first heating structure 20 is connected between the inner glass sheet 13 and the intermediate layer 12 of the glass body 10. The first heating structure 20 is at least located in the first region 14 and the second region 15 of the electric heating glass 100. Exemplarily, the first heating structure 20 is at least located in the first region 14 and the wiper storage area 16 of the electric heating glass 100.

[0061] Specifically, the first heating structure 20 may include a first heating body 21 and a first bus bar 22. Among them, the first heating body 21 may be a heating structure with a conductive function, which can generate heat after being powered on to realize the defrosting and defogging functions of the electric heating glass 100. Exemplarily, the first heating body 21 may be a heating wire, such as a tungsten wire. The first bus bar 22 is connected to both the first heating body 21 and an external power source, and is used to transmit the current of the external power source to the first heating body 21 to realize the electrical connection between the first heating body 21 and the external power source.

[0062] The first bus bar 22 is located in the second region 15. The first bus bar 22 may extend along the width direction (illustrated Y direction) of the electric heating glass 100. Exemplarily, the first bus bar 22 is located in the wiper storage area 16. One end of the first heating body 21 is connected to the first bus bar 22 and is located in the second region 15. The first heating body 21 may be bent and extended within the first region 14. The other end of the first heating body 21 may also be located in the second region 15. Further, one end of the first heating body 21 is connected to the first bus bar 22 and is located in the wiper storage area 16. The first heating body 21 may be bent and extended within the first region 14. The other end of the first heating body 21 may also be located in the wiper storage area 16. Specifically, the first heating body 21 first extends along the length direction (illustrated X direction) of the electric heating glass 100, then extends along the width direction (illustrated Y direction) of the electric heating glass 100, and then extends along the length direction of the electric heating glass 100 (as Figure 2 shown). The number of the first heating bodies 21 may be multiple. The multiple first heating bodies 21 are sequentially spaced and nested. Among two adjacent first heating bodies 21, one first heating body 21 is located outside the other first heating body 21 and is spaced apart from each other.

[0063] In some other embodiments, the other end of the first heating body 21 may also be located in an area of the second region 15 other than the wiper storage area 16. That is, the other end of the first heating body 21 is located in the second partition 152. At this time, the first heating body 21 extends along the length direction of the electrically heated glass 100. When the number of the first heating bodies 21 is multiple, the multiple first heating bodies 21 are arranged at intervals in the width direction of the electrically heated glass 100.

[0064] Please refer to Figure 5 , in this embodiment, the first bus bar 22 may include a first sub - part 221 and a second sub - part 222. The first sub - part 221 and the second sub - part 222 are arranged at intervals in the width direction of the electrically heated glass 100 and have opposite polarities. The first sub - part 221 and the second sub - part 222 can be respectively electrically connected to both ends of the same first heating body 21 so as to form an electrical circuit in the first heating structure 20. Exemplarily, the polarity of the first sub - part 221 may be positive, and the polarity of the second sub - part 222 may be negative. Or, the polarity of the first sub - part 221 may be negative, and the polarity of the second sub - part 222 may be positive. Exemplarily, the material of the first bus bar 22 may be copper.

[0065] The first sub - part 221 may include a first sub - wire 2211 and a second sub - wire 2212. The second sub - wire 2212 is connected to the first sub - wire 2211, and an included angle is formed between the second sub - wire 2212 and the first sub - wire 2211. Among them, the first sub - wire 2211 extends along the width direction of the electrically heated glass 100 and is connected to one end of the first heating body 21. The second sub - wire 2212 extends along the length direction of the electrically heated glass 100. The second sub - wire 2212 and the first sub - wire 2211 may be an integral structure formed by means such as integral molding. Or, the second sub - wire 2212 and the first sub - wire 2211 may also be an integral structure formed by assembly means such as welding.

[0066] The second sub - part 222 may include a third sub - wire 2221 and a fourth sub - wire 2222. The fourth sub - wire 2222 is connected to the third sub - wire 2221, and an included angle is formed between the fourth sub - wire 2222 and the third sub - wire 2221. Among them, the third sub - wire 2221 extends along the width direction of the electrically heated glass 100 and is arranged at intervals with the first sub - wire 2211 in the width direction of the electrically heated glass 100. The third sub - wire 2221 is also connected to one end of the first heating body 21. The fourth sub - wire 2222 extends along the length direction of the electrically heated glass 100 and is arranged at intervals with the second sub - wire 2212 in the width direction of the electrically heated glass 100. The fourth sub - wire 2222 and the third sub - wire 2221 may be an integral structure formed by means such as integral molding. Or, the fourth sub - wire 2222 and the third sub - wire 2221 may also be an integral structure formed by assembly means such as welding.

[0067] In one possible application scenario, the polarity of the first sub-section 221 is positive, and the polarity of the second sub-section 222 is negative. When the first heating structure 20 is energized, the current can sequentially pass through the second sub-wire 2212 and the first sub-wire 2211 of the first sub-section 221 to reach the first heating body 21, and then flow back to the third sub-wire 2221 and the fourth sub-wire 2222 of the second sub-section 222, forming a current loop.

[0068] In this embodiment, the number of the first busbars 22 can be one or more. When the number of the first busbars 22 is multiple, the multiple first busbars 22 can be spaced apart in the width direction of the electrically heated glass 100 and all located in the wiper receiving area 16. For example, the number of the first busbars 22 can be two (e.g., Figure 2 The two first bus bars 22 are spaced apart in the width direction of the electrically heated glass 100 .

[0069] In some other embodiments, the first busbar 22 may be located in the second partition 152 of the electrically heated glass 100 in addition to the wiper storage area 16. For example, there may be two first busbars 22. One of the first busbars 22 is located in the first partition 151 of the electrically heated glass 100. The other first busbar 22 is located in the second partition 152 of the electrically heated glass 100. The two first busbars 22 have opposite polarities. It should be noted that, in this case, the polarity of each first busbar 22 is unique. That is, the first busbar 22 does not include the first sub-portion 221 and the second sub-portion 222 of opposite polarities as described above, but has only one polarity. The first heating body 21 is connected between the two first busbars 22. When the first heating structure 20 is energized, the current can pass through one of the first busbars 22 and the first heating body 21 in sequence to reach the other first busbar 22, forming a current loop.

[0070] See also Figure 5 In this embodiment, the second heating structure 30 is connected between the outer glass 11 and the intermediate layer 12 and is located in the second area 15. For example, the second heating structure 30 is located in the wiper storage area 16.

[0071] In the thickness direction of the electrically heated glass 100, there is at least a partially overlapping region where the second heating structure 30 and the first heating structure 20 overlap within the second region 15. That is, in the thickness direction of the electrically heated glass 100, there is at least a partially overlapping region where the second heating structure 30 and the first bus bar 22 overlap within the second region 15. Specifically, the second heating structure 30 may include a second heating body 31 and a second bus bar (not shown in the figure). Among them, the second heating body 31 may be a heating structure with a conductive function, which can generate heat after being energized to achieve the defrosting and defogging functions of the electrically heated glass 100. Exemplarily, the second heating body 31 may be a silver paste heating wire. The second bus bar is connected to both the second heating body 31 and an external power supply, and is used to transmit the current of the external power supply to the second heating body 31 to realize the electrical connection between the second heating body 31 and the external power supply.

[0072] The second heating body 31 may extend along the width direction of the electrically heated glass 100. The projection of the second heating body 31 on the intermediate layer 12 in the thickness direction of the intermediate layer 12 (the Z direction shown in the figure) partially overlaps with the projection of the first bus bar 22 on the intermediate layer 12 in the thickness direction of the intermediate layer 12 to form an overlapping region. Specifically, the projection of the second heating body 31 on the intermediate layer 12 in the thickness direction of the intermediate layer 12 partially overlaps with the projections of the second sub-wire 2212 and the fourth sub-wire 2222 of the first bus bar 22 on the intermediate layer 12 in the thickness direction of the intermediate layer 12 to form an overlapping region. That is, in the thickness direction of the electrically heated glass 100, there is at least a partially overlapping region where the second heating body 31 and the first bus bar 22 overlap within the second region 15.

[0073] In some other embodiments, in the thickness direction of the electrically heated glass 100, the second heating structure 30 may also be spaced apart from the first heating structure 20 within the second region 15. That is, in the thickness direction of the electrically heated glass 100, the second heating structure 30 may be spaced apart from the first bus bar 22 within the second region 15. Specifically, the projection of the second heating body 31 on the intermediate layer 12 in the thickness direction of the intermediate layer 12 is spaced apart from the projection of the first bus bar 22 on the intermediate layer 12 in the thickness direction of the intermediate layer 12. That is, in the thickness direction of the electrically heated glass 100, the second heating body 31 and the first bus bar 22 are spaced apart within the second region 15.

[0074] In this embodiment, the number of the second heating bodies 31 may be multiple. The multiple second heating bodies 31 may all extend along the width direction of the electrically heated glass 100 and be spaced apart in the length direction of the electrically heated glass 100.

[0075] It can be understood that in cold weather conditions, such as when frost or snow occurs, the windshield wiper is often easily fixed by ice and snow, resulting in its inability to move and work normally. After the second heating body 31 located in the windshield wiper storage area 16 is powered on, it can emit heat, melting the frost, snow, etc. in the windshield wiper storage area 16, so that the windshield wiper can rotate and work freely, enhancing the visibility of passengers in the passenger compartment and also improving the safety of the vehicle 200 under bad weather conditions.

[0076] Please continue to refer to Figure 5 , the insulating member 40 is located in the second region 15. Exemplarily, the insulating member 40 is located in the windshield wiper storage area 16.

[0077] In the thickness direction of the electrically heated glass 100, the insulating member 40 is also located between the second heating structure 30 and the intermediate layer 12. That is, in the thickness direction of the electrically heated glass 100, the insulating member 40 is located between the second heating structure 30 and the first heating structure 20. The projection of the insulating member 40 on the intermediate layer 12 along the thickness direction of the intermediate layer 12 covers at least part of the projection of the second heating body 31 on the intermediate layer 12 along the thickness direction of the intermediate layer 12.

[0078] When there is a partially overlapping region where the first heating structure 20 and the second heating structure 30 overlap in the second region 15 in the thickness direction of the electrically heated glass 100, the insulating member 40 is at least located in the overlapping region between the first heating structure 20 and the second heating structure 30.

[0079] When the first heating structure 20 and the second heating structure 30 are spaced apart in the second region 15 in the thickness direction of the electrically heated glass 100, the insulating member 40 at least covers at least one of the first heating structure 20 located in the second region 15 and the second heating structure 30 located in the second region 15.

[0080] In the first possible implementation manner, please refer to Figure 5, in the thickness direction of the electrically heated glass 100, there is a partially overlapping region where the first heating structure 20 and the second heating structure 30 overlap within the second region 15. The insulating member 40 is at least located in the overlapping region between the first heating structure 20 and the second heating structure 30. Specifically, the projection of the insulating member 40 on the intermediate layer 12 in the thickness direction of the intermediate layer 12 covers part of the projection of the second heating body 31 on the intermediate layer 12 in the thickness direction of the intermediate layer 12, and also covers the overlapping region formed by the projection of the second heating body 31 on the intermediate layer 12 in the thickness direction of the intermediate layer 12 and the projection of the first bus bar 22 on the intermediate layer 12 in the thickness direction of the intermediate layer 12. Among them, the insulating member 40 may include a plurality of sub-structures 41. The plurality of sub-structures 41 all extend along the width direction of the electrically heated glass 100 and are sequentially arranged at intervals in the width direction of the electrically heated glass 100. That is, the plurality of sub-structures 41 are sequentially arranged in the extending direction of the second heating body 31. The projection of each sub-structure 41 on the intermediate layer 12 in the thickness direction of the intermediate layer 12 covers part of the projection of the second heating body 31 on the intermediate layer 12 in the thickness direction of the intermediate layer 12. A gap is formed between two adjacent sub-structures 41.

[0081] It can be understood that the plurality of sub-structures 41 are arranged at intervals in the width direction of the electrically heated glass 100, so that a gap can be formed between two adjacent sub-structures 41 of the insulating member 40, so that air and moisture can be discharged through the gap when the electrically heated glass 100 is assembled and evacuated.

[0082] In addition, it can be understood that since there is an overlapping part between the projection of the second heating body 31 on the intermediate layer 12 in the thickness direction of the intermediate layer 12 and the projection of the first bus bar 22 on the intermediate layer 12 in the thickness direction of the intermediate layer 12, therefore, during the assembly process of the electrically heated glass 100, when heating causes the intermediate layer 12 to melt, the overlapping second heating body 31 and the first bus bar 22 are very likely to come into direct contact, thus causing a short circuit problem. In this embodiment, by providing the insulating member 40 between the second heating body 31 and the first bus bar 22, the function of insulating protection can be effectively achieved. Even after the intermediate layer 12 melts, the insulating member 40 can still separate the second heating body 31 and the first bus bar 22 to prevent them from coming into direct contact.

[0083] In this embodiment, the shape of the insulating member 40 may be rectangular. In the extending direction of the second heating body 31, that is, in the width direction of the electrically heated glass 100, the length L1 of each sub-structure 41 satisfies the relational expression: 200 mm ≤ L1 ≤ 300 mm. The distance L2 between two adjacent sub-structures 41 satisfies the relational expression: 10 mm ≤ L2 ≤ 20 mm.

[0084] It should be noted that L1 refers to the actual length of the insulating member 40. When the insulating member 40 is arranged parallel to the width direction of the electro-heating glass 100, L1 is also the length of the sub-structure 41 along the width direction of the electro-heating glass 100. When the insulating member 40 is not arranged parallel to the width direction of the electro-heating glass 100, L1 refers to the length of the sub-structure 41 along the extension direction of the insulating member 40 (generally also the extension direction of the second heating body 31), and this distance is greater than the dimension of the sub-structure 41 along the width direction of the electro-heating glass 100.

[0085] In the second possible implementation manner, the same content as in the first implementation manner will not be elaborated again. The difference from the first implementation manner is that the projection of the insulating member 40 on the intermediate layer 12 along the thickness direction of the intermediate layer 12 covers the entire projection of the second heating body 31 on the intermediate layer 12 along the thickness direction of the intermediate layer 12, and also covers the overlapping area formed by the projection of the second heating body 31 on the intermediate layer 12 along the thickness direction of the intermediate layer 12 and the projection of the first bus bar 22 on the intermediate layer 12 along the thickness direction of the intermediate layer 12. This makes the contact area between the insulating member 4 and the second heating body 31 larger, and the insulating member 40 can better isolate between the second heating structure 30 and the first heating structure 20 to electrically isolate the second heating structure 30 and the first heating structure 20. That is, the insulating member 40 can prevent electrical conduction between the second heating structure 30 and the first heating structure 20.

[0086] In the third possible implementation manner, the same content as in the first implementation manner will not be elaborated again. The difference from the first implementation manner is that in the thickness direction of the electro-heating glass 100, the first heating structure 20 and the second heating structure 30 are arranged at intervals in the second area 15. The insulating member 40 covers the second heating structure 30 located in the second area 15, but does not cover the first heating structure 20 located in the second area 15. Specifically, the projection of the insulating member 40 on the intermediate layer 12 along the thickness direction of the intermediate layer 12 covers the entire projection of the second heating body 31 on the intermediate layer 12 along the thickness direction of the intermediate layer 12, and is arranged at intervals from the projection of the first bus bar 22 on the intermediate layer 12 along the thickness direction of the intermediate layer 12.

[0087] Alternatively, the insulating member 40 covers the first heating structure 20 located in the second area 15, but does not cover the second heating structure 30 located in the second area 15. Specifically, the projection of the insulating member 40 on the intermediate layer 12 along the thickness direction of the intermediate layer 12 covers the projection of the first bus bar 22 on the intermediate layer 12 along the thickness direction of the intermediate layer 12, and is arranged at intervals from the projection of the second heating body 31 on the intermediate layer 12 along the thickness direction of the intermediate layer 12.

[0088] Alternatively, the insulating member 40 covers the first heating structure 20 located within the second region 15 and the second heating structure 30 located within the second region 15. Specifically, the projection of the insulating member 40 on the intermediate layer 12 in the thickness direction of the intermediate layer 12 covers the projection of the first bus bar 22 on the intermediate layer 12 in the thickness direction of the intermediate layer 12, and the projection of the second heating body 31 on the intermediate layer 12 in the thickness direction of the intermediate layer 12.

[0089] In some other embodiments, the shape of the insulating member 40 can also be other regular or irregular shapes.

[0090] In this embodiment, the melting point of the insulating member 40 is greater than the melting point of the intermediate layer 12. The insulating member 40 can remain unchanged in a high-temperature environment of 140°C. Exemplarily, the insulating member 40 can be continuously heated at a temperature of 150°C for 5 hours without deformation. That is, the insulating member 40 is heat-resistant and not easily shrunk or curled.

[0091] The insulating member 40 can be a polyimide tape (also known as KAPTON tape, gold finger tape), a Teflon tape, a polyethylene terephthalate (PET) tape, etc. Exemplarily, the color of the polyethylene terephthalate tape can be green.

[0092] It can be understood that in special weather, the surface of the window glass is prone to fogging and frosting. Especially for the front windshield of a vehicle, fogging and frosting will seriously interfere with the driver's line of sight and affect driving safety. Therefore, a heating structure is usually provided in the window glass to heat the glass to achieve the purpose of defogging or defrosting. Due to reasons such as different heating positions or different constituent materials, different heating structures are arranged at different positions of the window glass. Among them, some heating structures need to be isolated by the intermediate layer. For example, a silver paste heating structure is provided between the outer glass and the intermediate layer, a tungsten wire heating structure is provided between the inner glass and the intermediate layer, and the tungsten wire heating structure and the silver paste heating structure are isolated by the intermediate layer. However, during the lamination process of the window glass, high-temperature (130°C) heating is required to melt the intermediate layer so that the melted intermediate layer can better bond the outer glass and the inner glass together. However, after the intermediate layer melts, the heating structures originally located on both sides in the thickness direction of the intermediate layer will come into direct contact, thereby causing a short circuit and resulting in the explosion of the window glass.

[0093] Thus, in this embodiment, by providing an insulating member 40 between the second heating structure 30 and the intermediate layer 12, that is, by providing an insulating member 40 between the second heating structure 30 and the first heating structure 20, and ensuring that the melting point of the insulating member 40 is greater than the melting point of the intermediate layer 12, when the intermediate layer 12 melts due to heating during the laminating process, the insulating member 40 between the second heating structure 30 and the first heating structure 20 will not melt. The insulating member 40 can block between the second heating structure 30 and the first heating structure 20, playing a role of insulation protection and avoiding the occurrence of a short circuit caused by the direct contact between the second heating structure 30 and the first heating structure 20. That is, the insulating member 40 can electrically isolate the second heating structure 30 and the first heating structure 20. In addition, on the basis of avoiding a short circuit, this embodiment does not affect the laminating process of the electric heating glass 100, ensuring the stability and reliability of the electric heating glass 100.

[0094] Please refer to Figure 2 and Figure 5 , in this embodiment, the electric heating glass 100 may further include a shielding layer 50. The shielding layer 50 is connected to at least one of the second surface 112 of the outer glass sheet 11, the third surface 131 of the inner glass sheet 13, and the fourth surface 132 of the inner glass sheet 13. Wherein, when the shielding layer 50 is connected to the second surface 112 of the outer glass sheet 11, the shielding layer 50 is specifically connected between the second surface 112 of the outer glass sheet 11 and the second heating structure 30. When the shielding layer 50 is connected to the third surface 131 of the inner glass sheet 13, the shielding layer 50 is specifically connected between the third surface 131 of the inner glass sheet 13 and the first heating structure 20.

[0095] The shielding layer 50 is also located in the second area 15 of the electric heating glass 100. The projection of the shielding layer 50 on the glass body 10 in the thickness direction of the glass body 10 may completely cover the second area 15. The shielding layer 50 may also cover the second heating structure 30, the insulating member 40, and a part of the first heating structure 20. Specifically, the shielding layer 50 may cover the second heating structure 30, the insulating member 40, the first bus bar 22, and a part of the first heating body 21. That is, the projection of the shielding layer 50 on the glass body 10 in the thickness direction of the glass body 10 may cover the second heating structure 30, the insulating member 40, the first bus bar 22, and a part of the first heating body 21.

[0096] It can be understood that by providing the shielding layer 50 on the electric heating glass 100, the covered second heating structure 30 and the first heating structure 20 can be hidden, thereby improving the appearance of the vehicle 200. At the same time, it can effectively avoid the damage to the second heating structure 30 and the first heating structure 20 caused by direct sunlight, thereby extending the service life of the second heating structure 30 and the first heating structure 20.

[0097] In this embodiment, the assembly of the electrically heated glass 100 includes at least the following steps:

[0098] Before laminating the electrically heated glass 100, first flatly attach the insulating member 40 to the surface of the second heating structure 30 facing the interlayer 12. Then arrange the positions of the first heating structure 20, and then perform the laminating operation on the electrically heated glass 100.

[0099] Second Embodiment:

[0100] In this embodiment, the same content as in the first embodiment will not be repeated. Different from the first embodiment, in the thickness direction of the electrically heated glass 100, the insulating member 40 is located between the first heating structure 20 and the interlayer 12. The projection of the insulating member 40 on the interlayer 12 in the thickness direction of the interlayer 12 covers part of the projection of the first heating structure 20 on the interlayer 12 in the thickness direction of the interlayer 12. Specifically, the projection of the insulating member 40 on the interlayer 12 in the thickness direction of the interlayer 12 covers at least part of the projection of the first bus bar 22 on the interlayer 12 in the thickness direction of the interlayer 12. In addition, the description of the electrically heated glass 100 in the following text can be applied to the first embodiment above without conflict.

[0101] It can be understood that setting the insulating member 40 between the first heating structure 20 and the interlayer 12 can also achieve the purpose of the insulating member 40 being located between the first heating structure 20 and the second heating structure 30, so as to electrically isolate the first heating structure 20 and the second heating structure 30, and avoid potential safety hazards such as explosion of the electrically heated glass 100 caused by direct contact between the first heating structure 20 and the second heating structure 30 during lamination, ensuring the safety and stability of the electrically heated glass 100.

[0102] In this embodiment, in the thickness direction of the electrically heated glass 100, the first heating structure 20 and the second heating structure 30 may have a partially overlapping region in the second region 15. At this time, the insulating member 40 is at least located in the overlapping region between the first heating structure 20 and the second heating structure 30. Specifically, the projection of the insulating member 40 on the interlayer 12 in the thickness direction of the interlayer 12 covers part of the projection of the first bus bar 22 on the interlayer 12 in the thickness direction of the interlayer 12, and also covers the overlapping region formed by the projection of the first bus bar 22 on the interlayer 12 in the thickness direction of the interlayer 12 and the projection of the second heating body 31 on the interlayer 12 in the thickness direction of the interlayer 12. Among them, the insulating member 40 may include a plurality of sub-structures 41. The plurality of sub-structures 41 are arranged in sequence in the width direction of the electrically heated glass 100. That is, the plurality of sub-structures 41 are arranged in sequence in the extending direction of the first bus bar 22.

[0103] It can be understood that the multiple substructures 41 are spaced apart in the width direction of the electrically heated glass 100 so that a gap can be formed between two adjacent substructures 41 of the insulating member 40, so that air and moisture can be discharged through the gap when the electrically heated glass 100 is assembled and evacuated.

[0104] Alternatively, when the first heating structure 20 and the second heating structure 30 partially overlap within the second region 15 in the thickness direction of the electrically heated glass 100, the projection of the insulating member 40 on the interlayer 12 along the thickness direction of the interlayer 12 may also cover the projection of all first busbars 22 on the interlayer 12 along the thickness direction of the interlayer 12, and also cover the overlapping region formed by the projection of the first busbars 22 on the interlayer 12 along the thickness direction of the interlayer 12 and the projection of the second heating body 31 on the interlayer 12 along the thickness direction of the interlayer 12. This increases the contact area between the insulating member 40 and the first busbars 22, and the insulating member 40 can better insulate the second heating structure 30 from the first heating structure 20, thereby electrically isolating the second heating structure 30 from the first heating structure 20.

[0105] In this embodiment, the first heating structure 20 and the second heating structure 30 may be spaced apart in the second region 15 along the thickness direction of the electrically heated glass 100. Specifically, the projection of the first busbar 22 on the interlayer 12 along the thickness direction of the interlayer 12 may be spaced apart from the projection of the second heating body 31 on the interlayer 12 along the thickness direction of the interlayer 12. In this case, the insulating member 40 covers at least one of the first heating structure 20 and the second heating structure 30 located in the second region 15. For details, please refer to the third implementation of the first embodiment.

[0106] Third embodiment:

[0107] In this embodiment, the same contents as those in the first embodiment are not repeated here. Unlike the first embodiment, in the thickness direction of the electrically heated glass 100, a portion of the insulating member 40 is located between the second heating structure 30 and the intermediate layer 12, and a portion of the insulating member 40 is located between the first heating structure 20 and the intermediate layer 12, thereby effectively electrically isolating the first heating structure 20 from the second heating structure 30. Furthermore, the following description of the electrically heated glass 100 is applicable to both the first and second embodiments above, unless there is a conflict.

[0108] When the insulating member 40 is located between the second heating structure 30 and the intermediate layer 12, the connection relationship between the insulating member 40 and the glass body 10 and other components shall refer to the first embodiment. When the insulating member 40 is located between the first heating structure 20 and the intermediate layer 12, the connection relationship between the insulating member 40 and the glass body 10 and other components shall refer to the second embodiment.

[0109] The above has introduced the embodiments of the present application in detail. Specific examples are used herein to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. An electric heating glass, characterized in that, The electrically heated glass includes: a glass body, which includes an outer sheet glass, an intermediate layer, and an inner sheet glass that are sequentially stacked; a first heating structure located between the inner sheet glass and the intermediate layer; a second heating structure located between the outer sheet glass and the intermediate layer; and an insulating member located on at least one side in the thickness direction of the intermediate layer and also between the first heating structure and the second heating structure, the melting point of the insulating member being greater than the melting point of the intermediate layer for electrically isolating the first heating structure and the second heating structure.

2. The electric heating glass according to claim 1, characterized in that, The electrically heated glass includes a first region and a second region, the second region being connected around the periphery of the first region, the first heating structure being located in the first region and the second region, and the second heating structure being located in the second region; In the thickness direction of the electrically heated glass, there is at least a partially overlapping region where the first heating structure and the second heating structure overlap in the second region, and the insulating member is at least located in the overlapping region between the first heating structure and the second heating structure.

3. The electric heating glass according to claim 1, wherein, The electrically heated glass includes a first region and a second region, the second region being connected around the periphery of the first region, the first heating structure being located in the first region and the second region, and the second heating structure being located in the second region; In the thickness direction of the electrically heated glass, the first heating structure and the second heating structure are spaced apart in the second region, and the insulating member covers at least one of the first heating structure located in the second region and the second heating structure located in the second region.

4. The electric heating glass according to any one of claims 1-3, characterized in that, The first heating structure includes a connected first heating body and a first bus bar, the first bus bar being located in the second region, one end of the first heating body being located in the second region, the first heating body being bent and extended in the first region, and the other end of the first heating body being located in the second region. In the thickness direction of the electrically heated glass, there is at least a partially overlapping region where the first bus bar and the second heating structure overlap in the second region or they are spaced apart.

5. The electric heating glass according to claim 4, wherein, The electrically heated glass includes a wiper storage area, and part of the second region forms the wiper storage area; The first bus bar, part of the first heating body, the second heating structure, and the insulating member are all located in the wiper storage area.

6. The electric heating glass according to claim 4, wherein The insulating member is located between the second heating structure and the intermediate layer, and the projection of the insulating member on the intermediate layer in the thickness direction of the intermediate layer covers at least part of the projection of the second heating structure on the intermediate layer in the thickness direction of the intermediate layer.

7. The electric heating glass according to claim 6, wherein The insulating member includes a plurality of sub-structures, the plurality of sub-structures being sequentially arranged along the extension direction of the second heating structure, and the projection of each sub-structure on the intermediate layer in the thickness direction of the intermediate layer covers part of the projection of the second heating structure on the intermediate layer in the thickness direction of the intermediate layer, and a gap is formed between adjacent two sub-structures.

8. The electric heating glass according to claim 7, characterized in that, In the extending direction of the second heating structure, the length L1 of each of the sub-structures satisfies the relational expression: 200 mm ≤ L1 ≤ 300 mm.

9. The electric heating glass according to claim 7, characterized in that, The spacing L2 between two adjacent sub-structures satisfies the relational expression: 10 mm ≤ L2 ≤ 20 mm.

10. The electric heating glass according to claim 4, characterized in that, The insulating member is located between the first heating structure and the intermediate layer. The projection of the insulating member on the intermediate layer in the thickness direction of the intermediate layer covers at least a part of the projection of the first bus bar on the intermediate layer in the thickness direction of the intermediate layer.

11. The electric heating glass according to claim 6 or 10, characterized in that, The projection of the first bus bar on the intermediate layer in the thickness direction of the intermediate layer and the projection of the second heating structure on the intermediate layer in the thickness direction of the intermediate layer partially overlap to form an overlapping area, and the projection of the insulating member on the intermediate layer in the thickness direction of the intermediate layer covers at least the overlapping area.

12. The electric heating glass according to claim 10, characterized in that, The projection of the first bus bar on the intermediate layer in the thickness direction of the intermediate layer and the projection of the second heating structure on the intermediate layer in the thickness direction of the intermediate layer are arranged at intervals, and the projection of the insulating member on the intermediate layer in the thickness direction of the intermediate layer covers at least a part of the projection of the first bus bar on the intermediate layer in the thickness direction of the intermediate layer.

13. The electric heating glass according to claim 4, wherein, The first heating body is a tungsten wire.

14. The electric heating glass according to any one of claims 1-3, 5-10, 12-13, characterized in that, The second heating structure includes a connected second heating body and a second bus bar. The second heating body extends along the width direction of the glass body, and the second heating body is a silver paste heating wire.

15. The electric heating glass according to any one of claims 1-3, 5-10, 12-13, characterized in that, The insulating member is a polyimide tape or a Teflon tape or a polyethylene terephthalate tape.

16. The electro-heating glass according to any one of claims 2-3, 5-10, 12-13, characterized in that, The electrically heated glass further includes a shielding layer. The shielding layer is connected to at least one of the surface of the outer glass facing the intermediate layer, the surface of the inner glass facing the intermediate layer, and the surface of the inner glass facing away from the intermediate layer. The shielding layer is located in the second area and covers the second heating structure, the insulating member, and a part of the first heating structure.

17. A vehicle, characterized in that, The vehicle includes a body sheet metal and the electrically heated glass according to any one of claims 1-16, and the electrically heated glass is installed on the body sheet metal.

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