CN117135783A

CN117135783A - Electrically heated glass and vehicle

Info

Publication number: CN117135783A
Application number: CN202310947641.7A
Authority: CN
Inventors: 曹晖; 曾东; 黄凤珠; 张小荣; 姚俊; 福原康太
Original assignee: Fuyao Glass Industry Group Co Ltd
Current assignee: Fuyao Glass Industry Group Co Ltd
Priority date: 2023-07-31
Filing date: 2023-07-31
Publication date: 2023-11-28

Abstract

The application relates to electric heating glass and a vehicle. A thermoplastic interlayer is sandwiched between the first glass sheet and the second glass sheet. The transparent conductive layer is deposited on the surface of the first glass plate in contact with the thermoplastic interlayer or on the surface of the second glass plate in contact with the thermoplastic interlayer. Each bus bar is arranged between the first glass plate and the second glass plate and is in direct electrical contact with the transparent conductive layer, and at least one bus bar comprises a main body section and at least one functional section connected with the main body section, wherein the thickness T0 of the main body section is larger than the thickness T1 of the functional section. In the lamination process, the position of the functional section has an exhaust function because of smaller thickness, is beneficial to outward exhaust of gas, avoids air bubbles from gathering in the glass, and can effectively weaken and even avoid air bubbles caused in the bus lamination process, thereby preventing appearance defects of the air bubbles.

Description

Electrically heated glass and vehicle

Technical Field

The application relates to the technical field of glass products, in particular to electric heating glass and a vehicle.

Background

The use of a transparent conductive layer for electrically heating a window glass on a vehicle is a known technology, for example, the technical solutions disclosed in patents US3313920, US5434384, US5824994, DE102008029986A1 and the like, by providing at least two bus bars spaced apart to be electrically connected with the transparent conductive layer, the current of a power supply is led into the transparent conductive layer through the bus bars, and the rapid removal of water mist, snow and frost on the window glass is achieved by joule heat.

In order to reduce power consumption and heat generation on the bus bar, the resistance of the bus bar is usually significantly lower than that of the transparent conductive layer, for example, patent CN106465479B mentions that the surface resistance of the conductive coating is 0.4Ω/≡to 10Ω/≡, and the specific resistance ρ of the bus bar _a Preferably 0.8 muohm cm to 7.0 muohm cm, the bus bars may be made of metal foil and/or screen printed silver paste with a silver content of 70% to 90%. Even bus bars made of silver paste, copper foil and the like are often required to have larger thickness or wider width so as to avoid remarkable heating and remarkable partial pressure of the bus bars caused by large current, thereby reducing vehicle-mounted energy waste and ensuring that the heating power density of a target heating area meets the use requirement.

In recent years, an increasing number of electrically heated glasses are required to have a rapid defrosting function, and particularly, electrically heated glasses mounted on electric vehicles are required to have a heating power density increased to 550W/m ² The above will lead toThe thickness or width of the bus is further increased, so that the bus is prevented from heating by partial pressure, the heating effect is weakened, and energy waste is avoided. However, thicker bus bars are not beneficial to the air bubble discharge during the lamination process of the laminated glass, and are easy to cause appearance defects; moreover, the bus bar is typically arranged in a non-transparent region of the glazing to avoid being visually inspected, which also makes the large width bus bar arrangement difficult to implement due to the space constraints available in the non-transparent region.

Disclosure of Invention

Based on this, it is necessary to overcome the drawbacks of the prior art and to provide an electrically heated glass and a vehicle which are capable of effectively weakening or even avoiding the bubbles caused by the bus bar during the lamination process.

The application provides electric heating glass which is characterized by comprising a first glass plate, a second glass plate, a thermoplastic interlayer, a transparent conducting layer and at least two bus bars, wherein the thermoplastic interlayer is arranged between the first glass plate and the second glass plate in an sandwiched mode, and the transparent conducting layer is deposited on a first surface of the first glass plate, which is in contact with the thermoplastic interlayer, or a second surface of the second glass plate, which is in contact with the thermoplastic interlayer;

each bus bar is arranged between the first glass plate and the second glass plate and is in direct electrical contact with the transparent conductive layer, at least one bus bar comprises a main body section and at least one functional section connected with the main body section, and the thickness T0 of the main body section is larger than the thickness T1 of the functional section.

In one embodiment, the thickness T1 of the functional segment is less than 50 μm.

In one embodiment, the length of the functional segment is not less than 3mm.

In one embodiment, at the connection position of the main body section and the functional section, the width of the main body section is set to W0, and the width of the functional section is set to W1, wherein W1/W0 is greater than 0.6.

In one embodiment, when opposite ends of the functional segment are respectively connected to the main body segment, an average width of the functional segment within a preset length range at any position is set to be W2, and a width of the main body segment at a connection position with the functional segment is set to be W0, wherein W2/W0 is greater than 0.6.

In one embodiment, the thickness T0 of the body segment is not less than 50 μm.

In one embodiment, at the connection position of the main body section and the functional section, the main body section is connected with a transition portion and is connected with the functional section through the transition portion, the width of the transition portion is larger than that of the main body section, and the thickness of the transition portion is equal to that of the main body section.

In one embodiment, the body section cooperates with the transition to form an L-shape or a T-shape.

In one embodiment, the bus bar is formed with at least one bending portion having a bending angle of less than 150 ° and at least one of the functional segments is present within 300mm from the angular top position of the bending portion.

In one embodiment, the bending part is a continuous bending part formed by the same bus bar, or is a discontinuous bending part formed by mutually spacing and matching two different bus bars.

In one embodiment, the main body section and the functional section are respectively provided as at least one or a combination of a silver paste layer, a metal foil and a conductive adhesive layer.

In one embodiment, the body section and the functional section are in overlapping engagement with each other at the connection location.

In one embodiment, the at least two bus bars include a negative bus bar and a positive bus bar, the negative bus bar includes two first lead-out wires, the positive bus bar includes two second lead-out wires, and adjacent first and second lead-out wires are connected to one electrical connector.

The application also provides a vehicle which is characterized by comprising the electric heating glass and a vehicle body, wherein the electric heating glass is arranged on the vehicle body.

Foretell electrical heating glass and vehicle, because the busbar is provided with the functional section that links to each other with the main part section, and the thickness T1 of functional section is less than the thickness T0 of main part section, like this at laminated glass closes the piece in-process, functional section place position because the thickness is less and have the exhaust function, do benefit to the outside discharge of gas, avoid the bubble to gather in glass inside, can effectively weaken even avoid the bubble that the busbar led to at the piece in-process of closing to prevent to appear bubble outward appearance defect.

Drawings

FIG. 1 is a cross-sectional view of an electrically heated glass according to an embodiment of the application.

Fig. 2 is a schematic top view of an electrically heated glass according to an embodiment of the application.

Fig. 3 is an enlarged schematic view of the structure of fig. 2 at a.

Fig. 4 is a partial cross-sectional view of fig. 3.

Fig. 5 is an enlarged schematic view of the structure of fig. 2 at B.

Fig. 6 is a partial cross-sectional view of fig. 5.

Fig. 7 is a schematic top view of an electrically heated glass according to another embodiment of the application.

Fig. 8 is an enlarged schematic view of the structure of fig. 7 at C.

Fig. 9 is an enlarged schematic view of fig. 7 at D.

100. A shielding layer; 200. a light transmission region; 10. a first glass plate; 101. a first surface; 102. a second surface; 20. a second glass plate; 201. a third surface; 202. a fourth surface; 30. a thermoplastic interlayer; 40. a transparent conductive layer; 50. a bus bar; 501. a negative bus bar; 5011. a first lead-out wire; 502. a positive electrode bus bar; 5021. a side line segment; 5022. a top edge line segment; 5023. a second lead-out wire; 51. a main body section; 511. a split section; 52. a functional section; 53. a transition section; 60. an electrical connector; q0, a continuous bending part; q1, discontinuous bending part.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

Referring to fig. 1 to 4, an electrically heated glass according to an embodiment of the present application includes: a first glass pane 10, a second glass pane 20, a thermoplastic interlayer 30, a transparent conductive layer 40, and at least two bus bars 50. A thermoplastic interlayer 30 is sandwiched between the first glass sheet 10 and the second glass sheet 20. The transparent conductive layer 40 is deposited on the surface of the first glass plate 10 in contact with the thermoplastic interlayer 30 or on the surface of the second glass plate 20 in contact with the thermoplastic interlayer 30. The thermoplastic interlayer 30 is used to connect the first glass plate 10 and the second glass plate 20 to provide the electrically heated glass with a laminated glass structure, and the material of the thermoplastic interlayer 30 is at least one selected from the group consisting of polyvinyl butyral (PVB), polyurethane (PU), ethylene-vinyl acetate copolymer (EVA), and ionomer (SGP).

Referring to fig. 1, each bus bar 50 is disposed between the first glass plate 10 and the second glass plate 20 and is in direct electrical contact with the transparent conductive layer 40.

Referring to fig. 2 to 4, at least one bus bar 50 includes a main body section 51 and at least one functional section 52 connected to the main body section 51. The thickness T0 of the body section 51 is greater than the thickness T1 of the functional section 52. In fig. 2, the electrically heated glass comprises two bus bars 50, each bus bar comprising a main body section 51 and at least one functional section 52 connected to the main body section 51.

According to the electric heating glass, as the bus bar 50 is provided with the functional section 52 connected with the main body section 51, and the thickness T1 of the functional section 52 is smaller than the thickness T0 of the main body section 51, in the lamination process of the laminated glass, the position of the functional section 52 has an exhaust function because of smaller thickness, so that the air is favorably discharged outwards, the air bubbles are prevented from being gathered in the glass, namely the air bubbles caused by the bus bar 50 in the lamination process can be effectively weakened or even avoided, and the appearance defect of the air bubbles is prevented. In addition, the bus bar 50 does not need to be reduced in resistance by increasing the width of the whole bus bar 50 in the related art, so that the defect of poor appearance of the bus bar 50 exposed in the light-transmitting area 200 can be avoided.

Wherein, by applying a voltage at the electric joints 60 of at least two bus bars 50, a current is inputted into the transparent conductive layer 40, thereby forming a heating area between the bus bars 50, the transparent conductive layer 40 positioned in the heating area heats and generates heat under the action of the current, thereby increasing the temperature of the electrically heated glass and realizing the functions of defrosting and defogging, etc. Accordingly, a film removing pattern such as a film removing line or a film removing frame may be formed in the transparent conductive layer 40 by a film removing method such as masking, chemical etching, laser film removing, or mechanical rubbing film removing in advance, so that the transparent conductive layer 40 in the heating region and the transparent conductive layer outside the heating region are electrically isolated from each other.

It should be noted that, referring to fig. 2, some functional sections 52 are located at the end of the bus bar 50, and one end of the functional sections is connected to the main body section 51, and the other end is set as a free end. Referring to fig. 3, some functional sections 52 are located in the middle of the bus bar 50, and two ends of the functional sections are respectively connected to the main body section 51, which is equivalent to forming a notch on the main body section 51, so that the main body section 51 is divided into two split sections 511, and the functional sections 52 are located at the notch and are respectively electrically connected to the two split sections 511 of the main body section 51.

Referring to FIG. 4, in one embodiment, the functional segment 52 has a thickness T1 of less than 50 μm, such as 49 μm, 45 μm, 40 μm, 35 μm, 30 μm, etc. The thickness T1 of the functional section 52 can be flexibly adjusted to any value according to practical requirements, so long as the thickness T1 is smaller than the thickness T0 of the main body section 51, so that the gas retained in the glass can be more easily discharged outwards, and the specific size is not limited herein.

Specifically, the thickness T1 of the functional segments 52 is less than or equal to 30 μm, such as 28 μm, 25 μm, 20 μm, 15 μm, 10 μm, etc. Preferably, the thickness T1 of the functional segments 52 is less than or equal to 10 μm, such as 8 μm, 5 μm, 3 μm, 2 μm, 1 μm, etc.

When the thickness T1 of the functional section 52 is as small as possible, the more advantageous the position is to discharge the gas outwards, so as to avoid the aggregation of bubbles inside the glass, i.e. to effectively weaken or even avoid the bubbles caused in the lamination process of the bus bar 50, thereby preventing appearance defects of bubbles. Meanwhile, it is also necessary to consider the difficulty of the manufacturing process of the functional segment 52 and to avoid the occurrence of hot spots, etc., and it is also preferable that the thickness T1 of the functional segment 52 is 1 μm or more.

In one embodiment, the length of the functional segment 52 is not less than 3mm. In this way, the effectiveness of the exhaust passage formed can be ensured. Specifically, the length of the functional segment 52 is, for example, 10mm or more, and specifically, various values such as 11mm, 15mm, 18mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 80mm, 100mm, and the like are used.

In one embodiment, the length of the functional segment 52 is no greater than 100mm. In this way, the resistance of the formed bus bar 50 can be adjusted, which is advantageous in reducing the voltage dividing effect of the bus bar 50. Specifically, the length of the functional segment 52 is, for example, not more than 50mm.

With continued reference to fig. 4, in one embodiment, the thickness T0 of the main body section 51 may be flexibly adjusted and set according to practical requirements, the thickness T0 of the main body section 51 is greater than the thickness T1 of the functional section 52, and the thickness T0 of the main body section 51 is, for example, not less than 50 μm, and particularly, for example, 50 μm to 200 μm. In this way, the thickness T0 of the main body section 51 is as large as possible, which is advantageous in reducing the resistance so that the voltage dividing effect of the bus bar 50 is reduced, but the thickness T0 of the main body section 51 is set to be not more than 200 μm, for example, in consideration of the manufacturing cost, the difficulty of the manufacturing process, and the total thickness control of the electrically heated glass.

Referring to fig. 3 and 5, in one embodiment, at the connection position of the main body section 51 and the functional section 52, the width of the main body section 51 is set to W0, and the width of the functional section 52 is set to W1, where W1/W0 is greater than 0.6. Thus, when the thickness of the bus bar 50 is reduced from thick to thin, the resistance becomes larger, and the current becomes unchanged, that is, the power density becomes larger, which causes local heating, so that the width W1 of the functional section 52 with a relatively smaller thickness is larger than 0.6 times of the width W0, that is, the width W1 is not too small, which is beneficial to reducing local heating.

Referring to fig. 3 and 5, in one embodiment, W1/W0 is greater than or equal to 1, and specific values may be 1, 1.2, 1.5, 1.8, 2, 2.5, 3, etc., which may be flexibly adjusted and set according to actual requirements.

In one embodiment, when the opposite ends of the functional segment 52 are respectively connected to the main body segment 51, the thickness T1 of the functional segment 52 is smaller than the thickness T0 of the main body segment 51, in order to facilitate reducing the partial pressure effect and the local heat generation of the functional segment 52, the average width of the functional segment 52 within the preset length range at any position is set to W2, and the width of the main body segment 51 at the connection position with the functional segment 52 is set to W0, where W2/W0 is greater than 0.6. Specifically, W2/W0 is greater than or equal to 1, and specific numerical values may be exemplified by 1, 1.2, 1.5, 1.8, 2, 2.5, 3, and the like, and specifically may be flexibly adjusted and set according to actual requirements. It should be noted that the preset length can be flexibly adjusted and set according to actual requirements, including but not limited to values of 2mm, 3mm, 4mm, 5mm, 6mm, 10mm, etc.

Referring to fig. 7 to 9, in one embodiment, at the connection position of the main body section 51 and the functional section 52, the main body section 51 is connected with a transition portion 53 and is connected with the functional section 52 through the transition portion 53. The width of the transition 53 is greater than the width of the body section 51. Specifically, the body section 51 cooperates with the transition 53 to form an L-shape or T-shape. Therefore, since the connection position of the main body section 51 and the functional section 52 is the thickness variation junction, one end of the main body section 51 for connecting the functional section 52 is L-shaped or T-shaped, the purpose is to further reduce the current density of the main body section 51 (which is an un-thinned section) near the thickness variation junction flowing to the functional section 52 (which is a thinned section), to avoid local hot spots caused by overhigh local power density near the thickness variation junction, and to effectively reduce the local power density at the position, thereby achieving the purpose of reducing the local hot spots.

Optionally, the thickness of the transition 53 is the same as the thickness of the body section 51.

In one embodiment, the transition 53 is integrally formed with the body section 51, such as by a simultaneous process such as printing.

In the related art, the bus bars 50 are arranged along the periphery, and the overall design of the vehicle often imposes constraints on the electrically heated glass, such as the number and location of the electrical connectors 60, which can have additional impact on the design and process implementation of the electrically heated glass. In order to reduce the voltage drop on the bus bar 50 and reduce the heat generation of the bus bar 50, the bus bar 50 has a thickness thicker than that of the transparent conductive layer 40 on the one hand, and two sets of electric contacts 60 at the left and right lower corners are used simultaneously on the other hand in the related art. In addition, due to the constraint of the position of the electrical connector 60, the bus bar 50 is arranged to be bent at four corners, the bending angle is smaller than 150 °, and the bending portion is formed by bending the same bus bar 50, which is called a continuous bending portion Q0. Likewise, a bending form is formed between the different bus bars 50, such that the lower left side and the lower right side in fig. 2 and 7 are in a T-shaped arrangement relationship with the different bus bars 50, and at this time, bending portions are also formed at the bottom of the left side and the right side, where the bending portions are formed by oppositely arranging the different bus bars 50 in an angle, which is called a discontinuous bending portion Q1. In the lamination process of the laminated glass, the bent inner side formed by the thicker bus bar 50 is unfavorable for gas discharge to cause bubble aggregation, so that bubble appearance defects are formed, and the possibility that the bus bar 50 is exposed in the light-transmitting area 200 is increased when the bus bar 50 is entirely widened, so that the defects of unattractive appearance are caused.

In one embodiment, the bus bar 50 is formed with at least one bend. The bending angle of the bending portion is less than 150 deg., and there is at least one functional segment 52 within 300mm of the angular top position of the bending portion. Therefore, the gas retention at the bending part can be reduced, and the purpose of eliminating the bubble of the lamination is achieved.

Wherein, when the functional segment 52 is closer to the angular top position of the bending portion, for example, the distance between the functional segment 52 and the angular top position of the bending portion is set to be, for example, 100mm, 50mm, 10mm, etc., which is more beneficial to reducing the gas retention at the bending portion. In addition, the greater the number of functional segments 52 disposed within 300mm of the angular tip position of the bend, the more advantageous it is to reduce gas stagnation at the bend.

Referring to fig. 2 or fig. 7, in one embodiment, the bending portion is a continuous bending portion Q0 formed by the same bus bar 50, or is a discontinuous bending portion Q1 formed by mutually spacing and matching two different bus bars 50.

When the bending portion is a continuous bending portion Q0 formed by the same bus bar 50, the same bus bar 50 is provided with a notch corresponding to the functional section 52 to form two split sections 511, and the functional section 52 is disposed at the notch and is electrically connected with the two split sections 511 of the main body section 51 respectively.

Referring to fig. 7 and 9, when the bending portion is a discontinuous bending portion Q1 formed by mutually spacing and matching two different bus bars 50, the functional section 52 is connected to an end portion of one bus bar 50, the other end of the functional section 52 is spaced from the other bus bar 50, the spacing is set to be S, and the size of S is set to be less than 30mm, for example, to be 2.5mm, 3mm, 3.5mm, 4mm, and other numerical values, which can be flexibly adjusted and set according to actual requirements, so that the two bus bars 50 can not be in direct contact with each other.

In one embodiment, the body section 51 and the functional section 52 are each provided as at least one or a combination of a silver paste layer, a metal foil, and a conductive adhesive layer.

In one embodiment, the main body section 51 is, for example, a conductive adhesive layer and a metal foil laminated together or a silver paste layer, a metal foil and a conductive adhesive layer laminated together. Furthermore, the functional segments 52 are for example silver paste layers or metal foils.

In one embodiment, the body section 51 and the functional section 52 are in overlapping engagement with each other at the connection location. Specifically, the end of the functional segment 52 is connected in superposition between the main body segment 51 and the transparent conductive layer 40. In this way, the reliability of the electrical connection between the body section 51 and the functional section 52 and the ease of implementation of the process can be ensured.

Referring to fig. 2, the bus bars 50 are arranged at the periphery of the electrically heated glass, and are adapted to the shape of the periphery of the electrically heated glass, so that the entire glass can be heated during operation, and the defogging and defrosting areas are large. Specifically, for example, two bus bars 50 are provided, each of which is connected to the negative electrode and the positive electrode, the bus bar 50 connected to the negative electrode is defined as a negative electrode bus bar 501, and the bus bar 50 connected to the positive electrode is defined as a positive electrode bus bar 502.

Referring to fig. 2, in one embodiment, the negative bus bar 501 is disposed, for example, at a bottom edge of the electrically heated glass, and the body section 51 of the negative bus bar 501 extends along a length of the bottom edge, for example, in a curved, linear, or other shape. In some embodiments, the body section 51 of the negative bus bar 501 is disposed substantially parallel to the bottom edge of the electrically heated glass.

The positive bus bar 502 is disposed on two opposite sides of the electrically heated glass and at the top edge, that is, includes two side line segments 5021 on two opposite sides of the electrically heated glass and a top line segment 5022 on the top of the electrically heated glass, and two ends of the top line segment 5022 are connected to the two side line segments 5021, respectively. The side line segment 5021 is adapted to the side shape of the electrically heated glass, such as a straight line, an arc, or other shape. The top line segment 5022 is adapted to the top shape of the electrically heated glass, such as being configured as a curve, a straight line, or other shape.

Referring to fig. 2, the opposite ends of the negative bus bar 501 are respectively provided with a first lead 5011, and the first lead 5011 is used for electrically connecting with a negative electrode of a power supply. The opposite ends of the positive bus 502 are respectively provided with a second outgoing line 5023, and the second outgoing line 5023 is used for being electrically connected with the positive electrode of the power supply.

Specifically, the first lead 5011 and the second lead 5023 on one side of the electrically heated glass correspond to each other for connection to one electrical connector 60; the first lead 5011 and the second lead 5023 on the other side of the electrically heated glass correspond to each other for connection to the other electrical connector 60.

The shape of the first outgoing line 5011 includes, but is not limited to, a straight line, a broken line, or a curved line, and specifically can be flexibly adjusted and set according to actual requirements. In addition, the shape of the second lead 5023 includes, but is not limited to, a straight line, a broken line or a curved line, and can be flexibly adjusted and set according to actual requirements.

Referring to fig. 2, in one embodiment, opposite ends of the negative bus bar 501 are spaced apart from two side line segments 5021 of the positive bus bar 502, respectively, so as to form two discontinuous bent portions Q1.

Referring to fig. 2, in one embodiment, two continuous bending portions Q0 are formed by two opposite ends of the top line segment 5022 and two side line segments 5021 respectively.

Referring to fig. 2, in one embodiment, the first lead-out wire 5011 is, for example, provided in a folded shape, specifically, for example, in an L shape, and is formed with a continuous bending portion Q0.

Referring to fig. 2, in one embodiment, the second lead 5023 is, for example, configured as a straight line segment, and is formed with a continuous bending portion Q0 in cooperation with the side line segment 5021.

Of course, in other alternatives, the negative bus bar may be disposed, for example, on the top side of the electrically heated glass, and the positive bus bar may be disposed on the bottom side and the opposite sides of the electrically heated glass, respectively; the negative busbar can in turn be arranged, for example, on the top side and on the opposite sides of the electrically heated glass, the positive busbar being arranged correspondingly on the bottom side of the electrically heated glass.

Referring to fig. 1 and 2, the first glass plate 10 has a first surface 101 and a second surface 10 disposed opposite to each other. Wherein the first surface 101 is the surface of the first glass sheet 10 facing the exterior of the vehicle and the second surface 102 is the surface of the first glass sheet 10 facing the thermoplastic interlayer 30. In addition, the second glass plate 20 is provided with a third surface 201 and a fourth surface 202 which are disposed opposite to each other. The third surface 201 is the surface of the second glass sheet 20 facing the thermoplastic interlayer 30, and the fourth surface 202 is the surface of the second glass sheet 20 facing the interior of the vehicle.

Referring to fig. 1 and 2, the electrically heated glass is further provided with a shielding layer 100, the visible light transmittance of the shielding layer 100 is less than or equal to 5%, the shielding effect is achieved, the area of the electrically heated glass where the shielding layer 100 is not provided is correspondingly provided with a light transmission area 200, and the visible light transmittance of the light transmission area 200 is greater than or equal to 70%.

In one embodiment, the materials of the shielding layer 100 include, but are not limited to, dark color inks, such as black ceramic glaze, black ultraviolet ink, brown ceramic ink, brown ultraviolet ink, and the like, and the materials can be arranged on the peripheral edges of the second surface 102, the third surface 201 and/or the fourth surface 202 by screen printing or the like, so that the boundary of the transparent conductive layer 40, the bus bar 50, the wire connector and the like are prevented from being seen from the outside of the vehicle, the consistent color of the peripheral edge of the electric heating glass can be ensured, and the aesthetic property of the electric heating glass can be improved; but also can block solar radiation, avoid the accelerated aging of the electric heating glass and the parts in the vehicle, improve the stability of the product and prolong the service life.

Referring to fig. 1 to 4, in one embodiment, a vehicle includes the electrically heated glass of any of the above embodiments, and further includes a vehicle body on which the electrically heated glass is disposed.

According to the vehicle, as the bus bar 50 is provided with the functional section 52 connected with the main body section 51, and the thickness T1 of the functional section 52 is smaller than the thickness T0 of the main body section 51, in the lamination process of the laminated glass, the position of the functional section 52 has an exhaust function because of smaller thickness, so that the outward exhaust of gas is facilitated, the aggregation of bubbles in the glass is avoided, namely, bubbles caused in the lamination process of the bus bar 50 can be effectively weakened or even avoided, and the appearance defect of the bubbles is prevented. In addition, the bus bar 50 does not need to be reduced in resistance by increasing the width of the whole bus bar 50 in the related art, so that the defect of poor appearance of the bus bar 50 exposed in the light-transmitting area 200 can be avoided.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims

1. An electrically heated glass comprising a first glass sheet, a second glass sheet, a thermoplastic interlayer, a transparent conductive layer and at least two bus bars, the thermoplastic interlayer being sandwiched between the first glass sheet and the second glass sheet, the transparent conductive layer being deposited on a first surface of the first glass sheet in contact with the thermoplastic interlayer or on a second surface of the second glass sheet in contact with the thermoplastic interlayer;

2. The electrically heated glass of claim 1, wherein the functional segment has a thickness T1 of less than 50 μιη.

3. The electrically heated glass of claim 1, wherein the functional section has a length of not less than 3mm.

4. The electrically heated glass of claim 1, wherein at the junction of the body section and the functional section, the width of the body section is set to W0, and the width of the functional section is set to W1, W1/W0 being greater than 0.6.

5. The electrically heated glass of claim 1, wherein when opposite ends of the functional segment are connected to the main segment, respectively, an average width of the functional segment within a preset length range at an arbitrary position is set to W2, and a width of the main segment at a connection position thereof with the functional segment is set to W0, W2/W0 being greater than 0.6.

6. The electrically heated glass of claim 1, wherein the thickness T0 of the body segment is not less than 50 μιη.

7. The electrically heated glass of claim 1, wherein at the junction of the body section and the functional section, the body section is connected with a transition portion and is connected with the functional section by the transition portion, the transition portion having a width greater than a width of the body section, and the transition portion having a thickness equal to a thickness of the body section.

8. The electrically heated glass of claim 7, wherein the body section cooperates with the transition to form an L-shape or a T-shape.

9. The electrically heated glass of claim 1, wherein the bus bar is formed with at least one bend having a bend angle of less than 150 ° and at least one of the functional segments is present within 300mm of an angular apex position of the bend.

10. The electrically heated glass of claim 9, wherein the bend is a continuous bend formed by the same bus bar or a discontinuous bend formed by two different bus bars spaced apart from each other and mated.

11. The electrically heated glass of claim 1, wherein the body section and the functional section are each provided as at least one or a combination of a silver paste layer, a metal foil, and a conductive paste layer.

12. An electrically heated glass as claimed in any of claims 1 to 11 wherein the body section and the functional section are in overlapping engagement with each other at the connection location.

13. The electrically heated glass of any of claims 1 to 11, wherein the at least two buss bars comprise a negative buss bar comprising two first lead-out wires and a positive buss bar comprising two second lead-out wires, adjacent first and second lead-out wires being connected to one electrical connector.

14. A vehicle comprising the electrically heated glass as claimed in any one of claims 1 to 13, and further comprising a vehicle body on which the electrically heated glass is disposed.