Electrochromic hollow glass assembly

Abstract

The utility model provides an electrochromic hollow glass assembly. The electrochromic hollow glass assembly comprises a first glass substrate and a second glass substrate which are separated by a conductive spacing bar, a lower transparent conductive layer, an electrochromic layer and an upper transparent conductive layer are sequentially arranged on the side, close to the conductive spacing bar, of the first glass substrate, and the conductive performance of the spacing bar in the electrochromic hollow glass assembly is utilized, and the structure and the position between the conductive spacing bar and the glass substrate needing power supply are optimized; the conductive spacing bars replace part of buses to play a role in connecting circuits, so that bus materials can be saved, the material cost can be reduced, the process steps can be simplified, and coating preparation work such as laser pre-scribing can be simplified.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the electrochromic technical field relates to a kind of electrochromic hollow glass assemblies. BACKGROUND

[0002] Electrochromism is the phenomenon that the optical properties (reflectivity, transmittance, absorptivity, etc.) of materials change stably and reversibly under the action of an applied electric field, which is manifested as reversible changes in color and transparency in appearance. Materials with electrochromic properties are called electrochromic materials, which undergo electrochemical redox reactions under the action of an applied electric field, resulting in the loss or gain of electrons and changes in the color of the material.

[0003] Devices made of electrochromic materials are called electrochromic devices. The electrochromic film layer structure of an electrochromic device is generally divided from top to bottom as follows: glass or transparent substrate material, transparent conductive layer (such as ITO), cathode electrochromic layer, ion conductive layer, anode electrochromic layer, transparent conductive layer (such as ITO), and protective layer. When the electrochromic film layer structure is working, a certain voltage is applied between the two transparent conductive layers, and the cathode electrochromic layer and the anode electrochromic layer undergo oxidation-reduction reactions under the action of the voltage, resulting in a change in color. The ion conductive layer provides a channel for ion flow when the electrochromic material undergoes oxidation-reduction reactions, maintaining the charge balance of the entire system. In the electrochromic device, the conductive metal layer used to connect the positive and negative transparent conductive layers to the positive and negative poles of the power source is called a busbar, which is generally prepared on the transparent conductive film layer using a printing process and is used to connect the workpiece to the external circuit.

[0004] Currently, electrochromic hollow glass requires external power to drive the color change of the glass when it is working. The specific implementation method is to print silver paste as a busbar on the transparent conductive layer, connect the positive and negative poles of the film layer according to the designed structure and position, and connect to the external electronic control module through the wire. However, in the prior art, the spacer of the electrochromic hollow glass assembly only serves to separate and support the two sides of the glass. To achieve the function of conduction, silver paste needs to be printed as a busbar on the surface of the film layer near the edge of the glass, which not only consumes a large amount of silver paste but also increases the complexity of the process flow.

[0005] Therefore, there is a need to develop a new type of electrochromic hollow glass assembly that can utilize the spacer to achieve the function of conduction. SUMMARY

[0006] In view of the deficiencies of the prior art, the utility model provides a kind of electrochromic hollow glass assembly, utilize the conductive property of electrochromic hollow glass assembly middle spacer, by optimizing the structure and position between conductive spacer and the glass substrate that needs to be powered, let conductive spacer replace part busbar to play the role of interconnecting circuit, not only can save busbar material, reduce material cost, also can simplify process step, simplify laser pre-marking etc. Film preparation work.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] The utility model provides a kind of electrochromic hollow glass assembly, the electrochromic hollow glass assembly includes the first glass substrate and second glass substrate separated by conductive spacer;Lower transparent conductive layer, electrochromic layer, upper transparent conductive layer are sequentially arranged on the side of the first glass substrate close to the conductive spacer;

[0009] Wherein, along the direction of the first glass substrate direction setting interval groove, the both ends of interval groove are located at the edge of the first glass substrate, the depth of interval groove is to the upper surface of lower transparent conductive layer, so that the upper transparent conductive layer is divided into upper transparent conductive layer first part and upper transparent conductive layer second part by interval groove;Close to the edge of the first glass substrate, along the direction of the first glass substrate direction, conductive groove is set in the upper transparent conductive layer first part, the depth of conductive groove is to the upper surface of lower transparent conductive layer, and the conductive groove is filled with conductive material;

[0010] According to the position of the interval groove, the conductive spacer is divided into first conductive spacer and second conductive spacer, so that the first conductive spacer is completely in the upper transparent conductive layer first part, and the second conductive spacer is completely in the upper transparent conductive layer second part, the first conductive spacer and the second conductive spacer are insulated by two insulating connectors;The first conductive spacer completely covers the conductive groove, and the first conductive spacer acts as a conductive busbar for electrically connecting the lower transparent conductive layer and the external controller;The second conductive spacer acts as a conductive busbar for electrically connecting the upper transparent conductive layer second part and the external controller.

[0011] Compared with the prior art, the electrochromic hollow glass assembly uses the conductive property of the spacer, optimizes the structure and position between the conductive spacer and the glass substrate that needs to be powered, and lets the conductive spacer replace part of the busbar to play the role of interconnecting circuit. Not only can save busbar material, reduce material cost, but also can simplify process step, simplify laser pre-marking etc. Film preparation work.

[0012] It is worth mentioning that, after the film forming operation of the lower transparent conductive layer, the electrochromic layer and the upper transparent conductive layer is completed in turn, laser scribing line needs to be performed at the outer edge of the film layer, and the scribing depth is fully penetrated to the first glass substrate, thereby playing an insulation protection role with the outside, which is a known prior art and will not be described here.

[0013] It is worth mentioning that, since the depth of the spacing groove is to the upper surface of the lower transparent conductive layer, the electrochromic layer above the lower transparent conductive layer is spaced into two parts that are insulated from each other synchronously with the upper transparent conductive layer.

[0014] It is worth mentioning that the conductive groove is arranged at the edge of the first glass substrate in the first part of the upper transparent conductive layer, which means that the conductive groove is as close to the edge of the first glass substrate as possible, but the entire conductive groove is still completely in the internal area of the upper transparent conductive layer and does not extend to the edge. In contrast, the spacing groove needs to extend to the edge of the upper transparent conductive layer, so that the upper transparent conductive layer is divided into the first part of the upper transparent conductive layer and the second part of the upper transparent conductive layer that are insulated from each other by the spacing groove.

[0015] It is worth mentioning that the first conductive spacing strip and the second conductive spacing strip are insulated by two insulating connectors, and the insulation means that the first conductive spacing strip and the second conductive spacing strip are closed by the connection, but they are insulated from each other.

[0016] It is worth mentioning that the first conductive spacing strip and the lower transparent conductive layer are conductively connected, and the conductive connection means that the first conductive spacing strip and the lower transparent conductive layer are conductively connected by the conductive material filled in the conductive groove.

[0017] As a preferred technical scheme of the utility model, the area of the first part of the upper transparent conductive layer accounts for 5-20% of the total area of the upper transparent conductive layer, for example, 5%, 8%, 10%, 12%, 15%, 17% or 20% and the like.

[0018] It is worth mentioning that the first part of the upper transparent conductive layer and the second part of the upper transparent conductive layer are separated by the spacing groove, the first part of the upper transparent conductive layer is used for arranging the conductive groove filled with conductive material, for realizing the conductive connection between the first conductive spacing strip and the lower transparent conductive layer, and for realizing the conductive connection between the lower transparent conductive layer and the external controller, so the area of the first part of the upper transparent conductive layer accounts for a small percentage; moreover, the first conductive spacing strip is completely in the area of the first part of the upper transparent conductive layer, so as to avoid the first conductive spacing strip from contacting the second part of the upper transparent conductive layer and effectively prevent short circuit.

[0019] As the utility model preferred technical scheme, according to the position of the spacing groove, so that the upper layer transparent conductive layer first part is close to the first glass substrate edge, so that two the insulating connector is located at the opposite edge of the first glass substrate, in turn make the first conductive spacer and the length, shape of the second conductive spacer are same, as far as possible reduce the influence of spacer resistance difference on the voltage between upper and lower two transparent conductive layers.

[0020] As the utility model preferred technical scheme, according to the position of the spacing groove, so that the upper layer transparent conductive layer first part is close to the first glass substrate edge, so that two the insulating connector is located at the opposite edge of the first glass substrate, in turn make the first conductive spacer and the length, shape of the second conductive spacer are same, as far as possible reduce the influence of spacer resistance difference on the voltage between upper and lower two transparent conductive layers.

[0021] As the utility model preferred technical scheme, the conductive spacer is aluminium spacer.

[0022] As the utility model preferred technical scheme, the lower layer transparent conductive layer and the upper layer transparent conductive layer are ITO film layers.

[0023] As the utility model preferred technical scheme, the electrochromic layer includes cathode electrochromic layer, ion conducting layer and anode electrochromic layer arranged in sequence.

[0024] As the utility model preferred technical scheme, two the insulating connector is insulating silica gel connector.

[0025] As the utility model preferred technical scheme, the conductive material is silver paste conductive material.

[0026] As the utility model preferred technical scheme, the width of the spacing groove is 3-5mm, for example 3mm, 3.5mm, 4mm, 4.5mm or 5mm etc., but not only limited to the listed values, other values not listed in the above numerical range are also applicable.

[0027] As the utility model preferred technical scheme, the width of the conductive groove is 3-5mm, for example 3mm, 3.5mm, 4mm, 4.5mm or 5mm etc., but not only limited to the listed values, other values not listed in the above numerical range are also applicable.

[0028] As the utility model preferred technical scheme, along the direction perpendicular to the first glass substrate, the thickness of the first conductive spacer and the second conductive spacer is same, and is 9-15mm, for example 9mm, 10mm, 11mm, 12mm, 13mm, 14mm or 15mm etc., but not only limited to the listed values, other values not listed in the above numerical range are also applicable.

[0029] As the preferred technical scheme of the utility model, the width of the first conductive spacing strip and the second conductive spacing strip is same along the horizontal first glass substrate direction, and is 6-12mm, such as 6mm, 7mm, 8mm, 9mm, 10mm, 11mm or 12mm, but is not limited to the listed values, and other values not listed in the above value range are also applicable.

[0030] As the preferred technical scheme of the utility model, the thickness of the first glass substrate and the second glass substrate is same, and is 2-3mm, such as 2mm, 2.1mm, 2.2mm, 2.3mm, 2.5mm, 2.7mm or 3mm, but is not limited to the listed values, and other values not listed in the above value range are also applicable.

[0031] Compared with the prior art, the utility model has the beneficial effects that:

[0032] The utility model provides a kind of electrochromic hollow glass component, utilizes the conductive performance of electrochromic hollow glass component middle spacing strip, by optimizing the structure and position between conductive spacing strip and the glass substrate that needs to be powered, so that conductive spacing strip as part of conductive path to power electrochromic layer, to realize the control of electrochromic, make conductive spacing strip replace most busbar to play the role of interconnecting circuit, not only can save busbar material, reduce material cost, also can simplify process step, simplify laser pre-marking and other film preparation work. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is the cross section schematic view of the electrochromic hollow glass component of the utility model embodiment 1;

[0034] Figure 2 It is the front view of the first glass substrate with film of the electrochromic hollow glass component of the utility model embodiment 1;

[0035] Figure 3 It is Figure 2 A-A direction sectional view of;

[0036] Figure 4 It is Figure 2 The front view of the conductive spacing strip and insulating connector being set up;

[0037] Figure 5 It is the front view of the first glass substrate with film of the electrochromic hollow glass component of the utility model comparative example 1;

[0038] Figure 6 It is Figure 5 B-B direction sectional view of;

[0039] 100-conductive spacer strip; 101-first conductive spacer strip; 102-second conductive spacer strip; 200-glass substrate; 201-first glass substrate; 202-second glass substrate; 300-lower transparent conductive layer; 400-electrochromic layer; 500-upper transparent conductive layer; 501-first part of the upper transparent conductive layer; 502-second part of the upper transparent conductive layer; 600-spacing groove; 601-first spacing groove; 602-second spacing groove; 700-conductive groove; 701-first conductive groove; 702-second conductive groove; 800-conductive material; 900-insulating connector. DETAILED DESCRIPTION

[0040] In order to make the technical scheme, purpose and advantages of the present application clearer, the following will further describe the present application in detail with specific examples and in conjunction with the drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0041] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements inside. For the electrical and communication field, it can be wired connection or wireless connection. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] Embodiment 1

[0044] The present embodiment provides an electrochromic hollow glass assembly, which comprises Figures 1-4As shown, the electrochromic hollow glass assembly comprises a first glass substrate 201 and a second glass substrate 202 separated by a conductive spacer 100; a lower transparent conductive layer 300, an electrochromic layer 400, and an upper transparent conductive layer 500 are sequentially arranged on one side of the first glass substrate 201 close to the conductive spacer 100;

[0045] Wherein, a spacing groove 600 is arranged in the direction perpendicular to the first glass substrate 201, both ends of the spacing groove 600 are located at the edges of the first glass substrate 201, and the depth of the spacing groove 600 reaches the upper surface of the lower transparent conductive layer 300, so that the upper transparent conductive layer 500 is divided into an upper transparent conductive layer first part 501 and an upper transparent conductive layer second part 502 which are insulated from each other by the spacing groove 600; close to the edge of the first glass substrate 201, a conductive groove 700 is arranged in the direction perpendicular to the first glass substrate 201 on the upper transparent conductive layer first part 501, the depth of the conductive groove 700 reaches the upper surface of the lower transparent conductive layer 300, and the conductive groove 700 is filled with a conductive material 800;

[0046] According to the position of the spacing groove 600, the conductive spacer 100 is divided into a first conductive spacer 101 and a second conductive spacer 102, so that the first conductive spacer 101 is completely in the upper transparent conductive layer first part 501, and the second conductive spacer 102 is completely in the upper transparent conductive layer second part 502, the first conductive spacer 101 and the second conductive spacer 102 are insulated by two insulating connectors 900; the first conductive spacer 101 completely covers the conductive groove 700, and the first conductive spacer 101 serves as a conductive bus for electrically connecting the lower transparent conductive layer 300 with an external controller; the second conductive spacer 102 serves as a conductive bus for electrically connecting the upper transparent conductive layer second part 502 with an external controller;

[0047] Specifically, the area of the upper transparent conductive layer first part 501 accounts for 10% of the total area of the upper transparent conductive layer 500; according to the position of the spacing groove 600, the upper transparent conductive layer first part 501 is close to the edge of the first glass substrate 201 and is in a U shape, so that the two insulating connectors 900 are located at the center of the opposite edges of the first glass substrate 201, and the length and shape of the first conductive spacer 101 and the second conductive spacer 102 are the same;

[0048] Specifically, the conductive spacer strip 100 is an aluminum spacer strip; the conductive material 800 is a silver paste conductive material; the width of the spacer groove 600 is 4 mm; the width of the conductive groove 700 is 4 mm; along the direction perpendicular to the first glass substrate 201, the thickness of the first conductive spacer strip 101 and the second conductive spacer strip 102 is the same, both being 12 mm; along the horizontal direction of the first glass substrate 201, the width of the first conductive spacer strip 101 and the second conductive spacer strip 102 is the same, both being 10 mm.

[0049] Specifically, the lower transparent conductive layer 300 and the upper transparent conductive layer 500 are both ITO film layers; the electrochromic layer 400 includes a cathode electrochromic layer, an ion conductive layer, and an anode electrochromic layer arranged in sequence; both of the insulating connectors 900 are insulating silicone connectors; the thickness of the first glass substrate 201 and the second glass substrate 202 is the same, both being 3 mm.

[0050] In actual operation, the conductive spacer strip 100, the first glass substrate 201, and the second glass substrate 202 are bonded by a primary sealant and a secondary sealant to ensure sealing; the primary sealant mainly uses conductive glue, so that the conductive spacer strip 100 can be tightly attached to the first glass substrate after plating while completing conduction, but at the insulating connector 900, insulating butyl glue is still used to avoid short circuit of the first conductive spacer strip 101 and the second conductive spacer strip 102; the positions of the two insulating connectors 900 are connected to the external controller by welding wires with the first conductive spacer strip 101 and the second conductive spacer strip 102, respectively.

[0051] Comparative Example 1

[0052] This comparative example provides an electrochromic hollow glass assembly, as shown in Figures 5-6 Compared with Example 1, the main difference is:

[0053] Along the direction perpendicular to the first glass substrate 201, only a first spacer groove 601 (in the shape of an inverted U and close to the edge of the first glass substrate 201) is formed on the lower transparent conductive layer 300, and both ends of the first spacer groove 601 are located at the edge of the first glass substrate 201, so that the lower transparent conductive layer 300 is divided into a lower transparent conductive layer first part (with a larger area) and a lower transparent conductive layer second part (with a smaller area) which are insulated from each other.

[0054] A second spacing groove 602 is arranged in a direction perpendicular to the first glass substrate 201 away from the first spacing groove 601, both ends of the second spacing groove 602 are located at the edge of the first glass substrate 201, and the depth of the second spacing groove 602 reaches the upper surface of the lower transparent conductive layer 300, so that the upper transparent conductive layer 500 is divided into an upper transparent conductive layer first part (small area) and an upper transparent conductive layer second part (large area) which are insulated from each other by the second spacing groove 602.

[0055] A first conductive groove 701 is arranged in a direction perpendicular to the first glass substrate 201 near the edge of the first glass substrate 201 in the upper transparent conductive layer first part (small area), the depth of the first conductive groove 701 reaches the upper surface of the lower transparent conductive layer 300, and the first conductive groove 701 is filled with silver paste conductive material 800 to form a conductive bus, so that the lower transparent conductive layer first part (large area) is conductively connected with an external controller.

[0056] A second conductive groove 702 (inverted U-shaped and close to the edge of the first glass substrate 201) is arranged in a direction perpendicular to the first glass substrate 201 near the edge of the first glass substrate 201 in the upper transparent conductive layer second part (large area), the depth of the second conductive groove 702 reaches the upper surface of the lower transparent conductive layer 300, and the second conductive groove 702 is filled with silver paste conductive material 800 to form a conductive bus, so that the upper transparent conductive layer second part (large area) is conductively connected with an external controller.

[0057] In actual operation, the structure of the electrochromic hollow glass assembly in Comparative Example 1 needs to be pre-scribed by laser to open the first spacing groove after the lower transparent conductive layer film is completed, and then the electrochromic layer, the upper transparent conductive layer film is completed in turn, and then the second spacing groove, the first conductive groove and the second conductive groove are pre-scribed by laser, and the silver paste is filled in the first conductive groove and the second conductive groove as conductive material, and the silver paste almost covers the outermost side of the first glass substrate; in contrast, the structure of the electrochromic hollow glass assembly in Example 1 can directly complete the lower transparent conductive layer, the electrochromic layer and the upper transparent conductive layer on the first glass substrate in turn, and then only one spacing groove and one conductive groove are needed to realize the interconnection of the closed circuit.

[0058] The utility model discloses the conductive performance of electrochromic hollow glass assembly middle spacing strip, through optimizing the structure and position between conductive spacing strip and the glass substrate that need to power supply, let conductive spacing strip replace part busbar to play the role of interconnecting circuit, not only can save busbar material, reduce material cost, can also simplify process step, simplify laser pre-scribing and other film preparation work.

[0059] The above merely describes the specific embodiments of the present application, but the protection scope of the present application is not limited thereto. It should be understood by those skilled in the art that any changes or replacements within the technical scope disclosed by the present application can be easily conceived by any person skilled in the art, and all such changes and replacements fall within the protection scope and disclosure scope of the present application.

Claims

1. An electrochromic insulating glass unit, characterized by, The electrochromic hollow glass assembly comprises a first glass substrate (201) and a second glass substrate (202) separated by a conductive spacer (100); a lower transparent conductive layer (300), an electrochromic layer (400), and an upper transparent conductive layer (500) are sequentially arranged on one side of the first glass substrate (201) close to the conductive spacer (100); Wherein, a spacing groove (600) is arranged in the direction perpendicular to the first glass substrate (201), both ends of the spacing groove (600) are located at the edges of the first glass substrate (201), and the depth of the spacing groove (600) reaches the upper surface of the lower transparent conductive layer (300), so that the upper transparent conductive layer (500) is divided into an upper transparent conductive layer first part (501) and an upper transparent conductive layer second part (502) which are insulated from each other; close to the edge of the first glass substrate (201), a conductive groove (700) is arranged in the direction perpendicular to the first glass substrate (201) in the upper transparent conductive layer first part (501), the depth of the conductive groove (700) reaches the upper surface of the lower transparent conductive layer (300), and the conductive groove (700) is filled with a conductive material (800); According to the position of the spacing groove (600), the conductive spacer (100) is divided into a first conductive spacer (101) and a second conductive spacer (102), so that the first conductive spacer (101) is completely in the upper transparent conductive layer first part (501), and the second conductive spacer (102) is completely in the upper transparent conductive layer second part (502), the first conductive spacer (101) and the second conductive spacer (102) are insulated and connected by two insulating connectors (900); the first conductive spacer (101) completely covers the conductive groove (700), and the first conductive spacer (101) serves as a conductive bus for electrically connecting the lower transparent conductive layer (300) with an external controller; the second conductive spacer (102) serves as a conductive bus for electrically connecting the upper transparent conductive layer second part (502) with an external controller.

2. The electrochromic insulating glass unit of claim 1, wherein, The area of the upper transparent conductive layer first part (501) accounts for 5-20% of the total area of the upper transparent conductive layer (500).

3. The electrochromic insulating glass unit of claim 1, wherein, According to the position of the spacing groove (600), the upper transparent conductive layer first part (501) is close to the edge of the first glass substrate (201), so that the two insulating connectors (900) are located at the opposite edges of the first glass substrate (201), and the length and shape of the first conductive spacer (101) and the second conductive spacer (102) are the same.

4. The electrochromic insulating glass unit of claim 3, wherein, According to the position of the interval groove (600), the upper transparent conductive layer first part (501) is in U shape, and two insulation connectors (900) are located at the center of the opposite edges of the first glass substrate (201).

5. The electrochromic insulating glass unit of claim 1, wherein, The conductive interval strip (100) is an aluminum interval strip.

6. The electrochromic insulating glass unit of claim 1, wherein, The conductive material (800) is silver paste conductive material.

7. The electrochromic insulating glass unit of claim 1, wherein, The width of the interval groove (600) is 3-5 mm.

8. The electrochromic insulating glass unit of claim 1, wherein, The width of the conductive groove (700) is 3-5 mm.

9. The electrochromic insulating glass unit of claim 1, wherein, Along the direction perpendicular to the first glass substrate (201), the thickness of the first conductive interval strip (101) and the second conductive interval strip (102) is the same, both being 9-15 mm.

10. The electrochromic insulating glass unit of claim 1 or 9, wherein, Along the direction horizontal to the first glass substrate (201), the width of the first conductive interval strip (101) and the second conductive interval strip (102) is the same, both being 6-12 mm.

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