CN219328963U - Electrochromic device and color-changing window - Google Patents

Abstract

The application provides an electrochromic device and a color-changing window, and belongs to the technical field of electrochromic. The electrochromic device comprises a first substrate layer, a first conductive layer, an electrochromic layer, a second conductive layer and a second substrate layer which are sequentially stacked; the edge of the first conductive layer is provided with a first bus bar, and the edge of the second conductive layer is provided with a second bus bar; a first conductive wire is arranged on one side of the first conductive layer along the thickness direction of the first conductive layer, the first conductive wire is electrically connected with the first bus bar, and the resistance of the first conductive wire is smaller than that of the first conductive layer; and/or, one side of the second conductive layer along the thickness direction is provided with a second conductive wire, the second conductive wire is electrically connected with the second bus bar, and the resistance of the second conductive wire is smaller than that of the second conductive layer. The speed of the electrochromic device is increased by increasing the speed of current conduction on the first and second conductive layers.

Description

Electrochromic device and color-changing window

Technical Field

The application relates to the technical field of electrochromic, in particular to an electrochromic device and a color-changing window.

Background

Electrochromic refers to the phenomenon that a material is reversibly changed under the action of an electric field, electrochromic substance is an electrochemical oxidation-reduction reaction, and the material shows reversible change of color in appearance after the reaction.

In some special application products, the existing electrochromic device is difficult to arrange the bus bars in the circumferential direction of the electrochromic device because the non-visible area of some sides is very narrow (for example, bus bars can only be arranged on the lower side of a side window of a vehicle because the shielding layers are arranged on other sides, and if the bus bars are arranged on only one side, the whole color changing speed of the electrochromic device can be influenced.

Disclosure of Invention

In view of this, the object of the present application is to overcome the deficiencies in the prior art, and to provide an electrochromic device and a color-changing window.

The application provides the following technical scheme: an electrochromic device comprises a first substrate layer, a first conductive layer, an electrochromic layer, a second conductive layer and a second substrate layer which are sequentially stacked;

the edge of the first conductive layer is provided with a first bus bar, and the edge of the second conductive layer is provided with a second bus bar;

a first conductive wire is arranged on one side of the first conductive layer along the thickness direction of the first conductive layer, the first conductive wire is electrically connected with the first bus bar, and the resistance of the first conductive wire is smaller than that of the first conductive layer; and/or a second conductive wire is arranged on one side of the second conductive layer along the thickness direction of the second conductive layer, the second conductive wire is electrically connected with the second bus bar, and the resistance of the second conductive wire is smaller than that of the second conductive layer.

In some embodiments of the present application, the first conductive wires are a plurality of, and the plurality of first conductive wires are connected in a staggered manner to form a first conductive grid;

and/or the second conductive wires are in a plurality, and the second conductive wires are connected in a staggered manner to form a second conductive grid.

Further, a gap is provided between the first conductive mesh and the first bus bar;

and/or a gap is provided between the second conductive mesh and the second bus bar.

Further, the resistance of the first conductive layer is R ₁ The resistance of the first conductive wire is R ₂ The resistance of the first bus bar is R ₃ ；

Wherein R is ₁ ＞R ₂ ＞R ₃ ；

The resistance of the second conductive layer is R ₄ The resistance of the second conductive wire is R ₅ The resistance of the second bus bar is R ₆ ；

Wherein R is ₄ ＞R ₅ ＞R ₆ 。

Further, a third conductive wire is arranged at the edge of the first conductive layer, and the third conductive wire is electrically connected with the first conductive grid;

and/or the edge of the second conductive layer is provided with a fourth conductive wire, and the fourth conductive wire is electrically connected with the second conductive grid.

Further, the third conductive line has a resistance R ₇ The resistance of the fourth conductive wire is R ₈ ；

Wherein R is ₂ ＞R ₇ ＞R ₃ ，R ₅ ＞R ₈ ＞R ₆ 。

Further, the wire diameter of the third conductive wire is larger than the wire diameter of the first conductive wire;

And/or the wire diameter of the fourth conductive wire is larger than the wire diameter of the second conductive wire.

Further, both ends of the third conductive wire are electrically connected with both ends of the first bus bar, respectively;

and/or two ends of the fourth conductive wire are respectively and electrically connected with two ends of the second bus bar.

Further, the resistance value between any point on the third conductive line and the P point on the first bus bar is R ₉ The resistance value between any point on the first conductive grid and the P point on the first bus bar is R ₁₀ Wherein R is ₉ ≤R ₁₀ ；

And/or the resistance value between any point on the fourth conductive wire and the Q point on the second bus bar is R ₁₁ The resistance value between any point on the second conductive grid and the Q point on the second bus bar is R ₁₂ Wherein R is ₁₁ ≤R ₁₂ 。

Further, the first bus bar includes a plurality of spaced apart first bus bar segments;

and/or the second bus bar comprises a plurality of spaced apart second bus bar segments.

Further, at least one of the first bus bar segments adjacent to the third conductive line is electrically connected to a first extraction electrode and the third conductive line, respectively, and the remaining first bus bar segments are electrically connected to the first conductive mesh and a second extraction electrode;

And/or at least one second bus bar section close to the fourth conductive wire is electrically connected with a third extraction electrode and the fourth conductive wire respectively, and the rest of the second bus bar sections are electrically connected with the second conductive grid and the fourth extraction electrode.

Further, the first bus bar and the second bus bar are each disposed at a position near one side edge of the electrochromic device.

Some embodiments of the present application provide a color-changing window comprising a window frame and the electrochromic device;

the lower edge of the window frame completely covers the first bus bar and the second bus bar.

Embodiments of the present application have the following advantages: the first conductive wire with the resistance smaller than that of the first conductive layer is arranged on the first conductive layer so as to improve the conduction speed of current on the first conductive wire, and meanwhile, the first conductive wire is electrically connected with the first conductive layer, so that the conduction speed of current on the first conductive layer can be improved. Meanwhile, the second conductive wire with the resistance smaller than that of the second conductive layer is arranged on the second conductive layer, so that the conduction speed of current on the second conductive wire is improved, and meanwhile, the second conductive wire is electrically connected with the second conductive layer, so that the conduction speed of current on the second conductive layer can be improved. The speed of the electrochromic device is increased by increasing the speed of current conduction on the first and second conductive layers.

In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a first embodiment of a first conductive layer in an electrochromic device according to some embodiments of the present application;

FIG. 2 shows a cross-sectional view of section A-A of FIG. 1;

fig. 3 is a schematic structural view of a first embodiment of a second conductive layer in an electrochromic device according to some embodiments of the present application;

fig. 4 is a schematic structural view of a second embodiment of a first conductive layer in an electrochromic device according to some embodiments of the present application;

Fig. 5 is a schematic structural view of a second embodiment of a second conductive layer in an electrochromic device according to some embodiments of the present application;

fig. 6 is a schematic structural view of a third embodiment of a first conductive layer in an electrochromic device according to some embodiments of the present application;

fig. 7 is a schematic structural view of a third embodiment of a second conductive layer in an electrochromic device according to some embodiments of the present application;

fig. 8 is a schematic structural view of a fourth embodiment of a first conductive layer in an electrochromic device according to some embodiments of the present application;

fig. 9 is a schematic structural view of a fourth embodiment of a second conductive layer in an electrochromic device according to some embodiments of the present application;

fig. 10 is a schematic structural view of a fifth embodiment of a first conductive layer in an electrochromic device according to some embodiments of the present application;

fig. 11 is a schematic structural view of a fifth embodiment of a second conductive layer in an electrochromic device according to some embodiments of the present application.

Description of main reference numerals:

100-a first substrate layer; 200-a first conductive layer; 300-electrochromic layer; 400-a second conductive layer; 500-a second substrate layer; 600-a first bus bar; 700-second bus bar; 810-a first conductive line; 910-a second conductive line; 800-a first conductive mesh; 900-a second conductive mesh; 1000-a third conductive line; 1100-fourth conductive lines; 610-a first bus bar segment; 710-a second bus bar segment; 1200-a first extraction electrode; 1300-a second extraction electrode; 1400-third extraction electrode; 1500-fourth extraction electrode.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the templates is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 3, some embodiments of the present application provide an electrochromic device mainly applied to automobile windows, architectural glass, smart glass, rearview mirrors, and the like. The electrochromic device includes a first substrate layer 100, a first conductive layer 200, an electrochromic layer 300, a second conductive layer 400, and a second substrate layer 500, which are sequentially stacked.

In this embodiment, the first substrate layer 100 and the second substrate layer 500 are both made of PET (Polyethylene terephthalate ) transparent and flexible materials, and the first conductive layer 200 and the second conductive layer 400 are both made of transparent ITO (Indium Tin Oxide) materials.

In addition, the electrochromic layer 300 includes an electrochromic material layer, an electrolyte layer, and an ion conductive layer which are sequentially stacked, and an electric field can be formed between the first conductive layer 200 and the second conductive layer 400 by simultaneously switching the first conductive layer 200 and the second conductive layer 400 on an external power source, so that the electrochromic layer 300 can be changed in color stably and reversibly by the electric field.

The edge of the first conductive layer 200 is provided with a first bus bar 600, and it should be noted that the first bus bar 600 is disposed on one side of the first conductive layer 200 in the thickness direction, and the first bus bar 600 is electrically connected with the first conductive layer 200.

Meanwhile, a second bus bar 700 is provided at an edge of the second conductive layer 400. In addition, the second bus bar 700 is disposed at one side in the thickness direction of the second conductive layer 400, and the second bus bar 700 is electrically connected with the second conductive layer 400.

It should be noted that, the first bus bar 600 may be disposed on any side of the edge of the first conductive layer 200, and the second bus bar 700 may be disposed on any side of the edge of the second conductive layer 400, which may be specifically set according to practical situations.

Specifically, in the present embodiment, the first bus bar 600 and the second bus bar 700 are disposed at the same side of the electrochromic device, respectively, such that when the first bus bar 600 and the second bus bar 700 are electrically connected to an external power source, respectively, an external current flows through the first conductive layer 200 through the first bus bar 600, and simultaneously flows through the second conductive layer 400 through the second bus bar 700, respectively. It will be appreciated that on an electrochromic device, the direction of conduction of current is from the side closer to the first bus bar 600 and the second bus bar 700 to the side farther from the first bus bar 600 and the second bus bar 700.

Thus, the color change direction of the electrochromic device is changed from the side of the electrochromic device, which is close to the first bus bar 600 and the second bus bar 700, to the side, which is far from the first bus bar 600 and the second bus bar 700, so that the electrochromic device achieves the color change direction from side to side.

In addition, in some embodiments of the present application, in order to increase the rate of color change of the electrochromic device, a first conductive line 810 is provided at one side of the first conductive layer 200 in the thickness direction thereof, and the first conductive line 810 is electrically connected with the first bus bar 600. It should be noted that, in the rectangular coordinate system shown in fig. 2, the thickness direction of the first conductive layer 200 is the direction indicated by the y-axis in fig. 2.

Wherein the resistance of the first conductive line 810 is smaller than the resistance of the first conductive layer 200. Specifically, when the first bus bar 600 is electrically connected to an external power source, at this time, an external current sequentially flows through the first bus bar 600 and the first conductive wire 810. Since the resistance of the first conductive line 810 is smaller than that of the first conductive layer 200, the conduction speed of the current on the first conductive line 810 is greater than that of the current on the first conductive layer 200, i.e. by disposing the first conductive line 810 on the first conductive layer 200, the conduction speed of the current on the first conductive layer 200 is improved.

By setting the first conductive wire 810 to different shapes, the distribution speed of the current on the first conductive layer 200 according to the shape of the first conductive wire 810 is adjusted, so as to improve the application scene of the electrochromic device, and the shape of the first conductive wire 810 and the specific position of the first conductive wire 810 on the first conductive layer 200 can be set according to the shape of the electrochromic device. For example, when the electrochromic device is in a circular sheet shape, at this time, by setting the first conductive wire 810 to be circular, the color changing direction and color changing diversity of the electrochromic device can be adjusted by adjusting the area enclosed by the circular first conductive wire 810.

When the circular first conductive wire 810 is disposed at the edge of the first conductive layer 200 and when the first bus bar 600 is electrically connected with an external power supply, since the resistance of the first conductive wire 810 is smaller than that of the first conductive layer 200, the conduction speed of current on the first conductive wire 810 is greater than that on the first conductive layer 200, the current flows through the circular first conductive wire 810 first, then the current flows from the circular first conductive wire 810 to the center of the first conductive layer 200, and on the electrochromic device, a color changing direction from the edge of the electrochromic device to the center is formed, so that not only the color changing speed of the electrochromic device is improved, but also the color changing diversity of the electrochromic device is further improved, and meanwhile, the position and the shape of the first conductive wire 810 can be set according to the electrochromic devices of different shapes, so that the electrochromic device is applied to different scenes, the application range of the electrochromic device is enlarged, and the utilization rate of the electrochromic device is further improved.

In addition, in some embodiments of the present application, a second conductive line 910 is provided at one side of the second conductive layer 400 in the thickness direction thereof, and the second conductive line 910 is electrically connected to the second bus bar 700. It should be noted that, in the rectangular coordinate system shown in fig. 2, the thickness direction of the second conductive layer 400 is the direction indicated by the y-axis in fig. 2.

Specifically, the resistance of the second conductive line 910 is smaller than the resistance of the second conductive layer 400. When the second bus bar 700 is electrically connected to an external power source, at this time, an external current sequentially flows through the second bus bar 700 and the second conductive line 910. Since the resistance of the second conductive line 910 is smaller than that of the second conductive layer 400, the conduction speed of the current on the second conductive line 910 is greater than that of the current on the second conductive layer 400, that is, by disposing the second conductive line 910 on the second conductive layer 400, the conduction speed of the current on the second conductive layer 400 is improved. It will be appreciated that the faster the current is conducted on the second conductive layer 400, the faster the electrochromic device changes color, i.e., the higher the electrochromic device changes color.

In addition, the distribution of the second conductive lines 910 on the second conductive layer 400 is similar to the distribution of the first conductive lines 810 on the first conductive layer 200, and will not be described in detail herein.

Further, in some embodiments of the present application, the first conductive line 810 is disposed at one side of the thickness direction of the first conductive layer 200, and at the same time, the second conductive line 910 is disposed at the thickness direction of the second conductive layer 400, such that when the first bus bar 600 and the second bus bar 700 are electrically connected to an external power source, respectively, the conduction speed of the current on the first conductive layer 200 and the second conductive layer 400 is increased by the disposition of the first conductive line 810 and the second conductive line 910, so that the color change speed of the electrochromic device is further increased.

The shape of the first conductive line 810 and the shape of the second conductive line 910 may be the same or different. The length of the first conductive line 810 and the length of the second conductive line 910 may be equal or unequal, and may be specifically set according to the actual situation.

Specifically, in the present embodiment, the orthographic projection of the first conductive line 810 on the plane of the second conductive line 910 overlaps with the second conductive line 910, so as to improve the color uniformity of the electrochromic device and improve the color-changing speed of the electrochromic device.

It should be noted that the number of the first conductive lines 810 and the second conductive lines 910 may be one, two or more of any number, and may be specifically set according to practical situations.

The shapes of the first conductive line 810 and the second conductive line 910 may be any one or a combination of two or more of a straight line shape, a folded line shape, a curved line shape, an arc line shape, a wave shape, a circle shape, a polygon shape, an ellipse shape, an image shape, a letter shape, a figure shape, or an irregular pattern, and may be specifically set according to practical situations.

In some embodiments of the present application, the first conductive line 810 and the second conductive line 910 are transparent conductive lines, for example, the material of the first conductive line 810 and the second conductive line 910 is transparent ITO (Indium Tin Oxide) material or transparent AZO material.

By arranging the first conductive line 810 and the second conductive line 910 to be transparent conductive structures, the first conductive line 810 and the second conductive line 910 cannot be seen by naked eyes of a person, so that the influence of the first conductive line 810 and the second conductive line 910 on a color change region in an electrochromic device is avoided, and the color change region of the electrochromic device can be kept clean and attractive.

As shown in fig. 1 and 3, in some embodiments of the present application, the first conductive wires 810 are a plurality, and the plurality of first conductive wires 810 are connected in a staggered manner to form the first conductive mesh 800, that is, the plurality of first conductive wires 810 are electrically connected to each other to form the first conductive mesh 800.

Wherein the shape of the first conductive mesh 800 may be a regular mesh structure. In addition, the first conductive mesh 800 may have an irregular mesh structure.

When the first conductive mesh 800 is a regular mesh structure, the shape of the mesh formed by surrounding the plurality of first conductive wires 810 may be a polygon or a sector. For example, the shape of the mesh in the first conductive mesh 800 is square, diamond, regular pentagon, or the like, and may be specifically set according to the actual situation.

The plurality of first conductive wires 810 are connected in a staggered manner to form the first conductive grid 800, so that the coverage area of the first conductive grid 800 on the first conductive layer 200 is enlarged, namely, when the first bus bar 600 is electrically connected with an external power supply, at this time, the external current can be quickly conducted with the first conductive grid 800 through the first reflow bar, so that the external current can quickly flow through the first conductive grid 800, and meanwhile, the coverage speed of the current on the first conductive layer 200 is improved, so that the integral color change speed of the electrochromic device is improved.

It should be noted that, in some embodiments of the present application, the first conductive mesh 800 is an irregular mesh structure. Specifically, the first conductive mesh 800 has an irregular honeycomb structure, so as to avoid moire and obvious directional astigmatism caused by the regular shape, and improve the stability and the color-changing quality of the electrochromic device in the color-changing process.

The moire is a stripe of high-frequency interference of the photosensitive element, and is a stripe of high-frequency irregularity which can make the picture color. When the spatial frequency of the pixels of the photosensitive element is close to the spatial frequency of the fringes in the image, a new wavy interference pattern, the so-called moire, may be generated.

In addition, in some embodiments of the present application, the second conductive lines 910 are a plurality, and the second conductive lines 910 are connected in a staggered manner to form the second conductive grid 900.

The shape of the second conductive mesh 900 may be a regular mesh structure. In addition, the second conductive mesh 900 may have an irregular mesh structure.

The shape of the second conductive mesh 900 is similar to that of the first conductive mesh 800, and will not be described in detail herein.

In this embodiment, the shape of the second conductive mesh 900 is also an irregular mesh structure, so as to improve the color changing speed of the electrochromic device, and meanwhile, avoid occurrence of moire and obvious directional astigmatism in the color changing area of the electrochromic device, and improve the color changing quality of the electrochromic device.

As shown in fig. 1, in some embodiments of the present application, a first conductive mesh 800 is provided at one side in the thickness direction of a first conductive layer 200, while a second conductive mesh 900 is provided at one side in the thickness direction of a second conductive layer 400. When the first and second bus bars 600 and 700 are electrically connected to an external power source, respectively, since the resistance of the first conductive mesh 800 is smaller than that of the first conductive layer 200, current can rapidly flow through the first conductive mesh 800, and current can rapidly cover the first conductive layer 200 through the first conductive mesh 800, i.e., current can rapidly flow through the first conductive layer 200. In addition, since the resistance of the second conductive mesh 900 is smaller than that of the second conductive layer 400, current can rapidly flow through the second conductive mesh 900, and current can rapidly cover the second conductive layer 400 through the second conductive mesh 900, i.e., current can rapidly flow through the second conductive layer 400.

The speed of the electrochromic device is further increased by increasing the conduction speed of the current on the first conductive layer 200 and the second conductive layer 400.

As shown in fig. 4, in some embodiments of the present application, a third conductive line 1000 is provided at an edge of the first conductive layer 200, and the third conductive line 1000 is electrically connected to the first conductive mesh 800.

It should be noted that, the third conductive wire 1000 and the first bus bar 600 are respectively located at different sides of the first conductive mesh 800, that is, the third conductive wire 1000 and the first bus bar 600 are respectively disposed at different sides of the first conductive mesh 800.

Specifically, one end of the third conductive wire 1000 is electrically connected to one end of the first bus bar 600, and the other end of the third conductive wire 1000 is electrically connected to the other end of the first bus bar 600, so as to form a closed current loop, that is, the edge of the first conductive mesh 800 is surrounded by the third conductive wire 1000 and the first bus bar 600 to form a closed conductive loop.

It can be understood that, when the first bus bar 600 is electrically connected to an external power source, external current can flow through the first bus bar 600 and the third conductive line 1000 in sequence, that is, the current firstly covers the edge of the first conductive layer 200, then the current flowing through the first bus bar 600 and the third conductive line 1000 flows to the center of the first conductive layer 200 through the first conductive grid 800, so that the conduction speed of the current on the first conductive layer 200 is improved, and meanwhile, the color change area of the electrochromic device changes color from the periphery to the middle, and the color change speed of the electrochromic device is improved.

As shown in fig. 5, in some embodiments of the present application, a fourth conductive line 1100 is provided at an edge of the second conductive layer 400, and the fourth conductive line 1100 is electrically connected to the second conductive mesh 900.

It should be noted that, the fourth conductive wire 1100 and the second bus bar 700 are respectively located at different sides of the second conductive mesh 900, that is, the fourth conductive wire 1100 and the second bus bar 700 are respectively disposed at different sides of the second conductive mesh 900.

Specifically, one end of the fourth conductive wire 1100 is electrically connected to one end of the second bus bar 700, and the other end of the fourth conductive wire 1100 is electrically connected to the other end of the second bus bar 700, so as to form a closed current loop, that is, the edge of the second conductive mesh 900 is surrounded by the fourth conductive wire 1100 and the second bus bar 700 to form a closed conductive loop.

It can be understood that, when the second bus bar 700 is electrically connected to an external power source, external current can flow through the second bus bar 700 and the fourth conductive line 1100 in sequence, that is, the current firstly covers the edge of the second conductive layer 400, then the current flowing through the second bus bar 700 and the fourth conductive line 1100 flows to the center of the second conductive layer 400 through the second conductive grid 900, so that the conduction speed of the current on the second conductive layer 400 is improved, and meanwhile, the color change area of the electrochromic device changes color from the periphery to the middle, and the color change speed of the electrochromic device is improved.

In addition, in some embodiments of the present application, a fourth conductive line 1100 is provided at an edge of the second conductive line 910 while a third conductive line 1000 is provided at an edge of the first conductive mesh 800. Wherein the third conductive wire 1000 is electrically connected to the first conductive mesh 800 and the first bus bar 600, respectively, and the fourth conductive wire 1100 is electrically connected to the second conductive mesh 900 and the second bus bar 700, respectively.

By electrically connecting the first bus bar 600 and the second bus bar 700 to an external power supply at the same time, and by being able to simultaneously increase the conduction speed of current on the first conductive layer 200 and the second conductive layer 400, the color change speed of the electrochromic device can be further increased.

In this embodiment, the resistance of the first conductive layer 200 is R ₁ The resistance of the first conductive line 810 is R ₂ The resistance of the first bus bar 600 is R ₃ Wherein R is ₁ ＞R ₂ ＞R ₃ . By reducing the resistance of the first conductive line 810 to increase the conduction speed of the current on the first conductive line 810, and simultaneously making the resistance of the first conductive line 810 larger than the resistance of the first bus bar 600, the conduction speed of the current on the first bus bar 600 is increased, and the sensitivity of the electrical connection of the electrochromic device with an external power source is improved.

In addition, the resistance of the second conductive layer 400 is R ₄ The resistance of the second conductive line 910 is R ₅ The resistance of the second bus bar 700 is R ₆ Wherein R is ₄ ＞R ₅ ＞R ₆ . By reducing the resistance of the second conductive line 910 to increase the conduction speed of the current on the second conductive line 910, and simultaneously making the resistance of the second conductive line 910 larger than the resistance of the second bus bar 700, the conduction speed of the current on the second bus bar 700 is increased, and the sensitivity of the electrical connection of the electrochromic device and the external power supply is improved.

In some embodiments of the present application, to increase the conduction speed of the current on the third conductive line 1000, the resistance of the third conductive line 1000 is less than the resistance of the first conductive mesh 800.

Specifically, the resistance of the third conductive line 1000 is R ₇ Wherein R is ₂ ＞R ₇ ＞R ₃ 。

It is understood that the resistance of the first conductive layer 200 is greater than the resistance of the first conductive line 810, the resistance of the first conductive line 810 is greater than the resistance of the third conductive line 1000, and the resistance of the third conductive line 1000 is greater than the resistance of the first bus bar 600.

In the present embodiment, since the first bus bar 600 is electrically connected to the third conductive line 1000 and the first conductive mesh 800, respectively, and the resistance of the first conductive line 810 is greater than the resistance of the third conductive line 1000, i.e., the resistance of the first conductive mesh 800 is greater than the resistance of the third conductive line 1000.

Thus, when current is conducted through the first bus bar 600 to the first conductive mesh 800 and the third conductive wire 1000, at this time, the conduction speed of the current on the third conductive wire 1000 is greater than that on the first conductive mesh 800, i.e., the current can be quickly conducted on the third conductive wire 1000 while the current is conducted through the first bus bar 600 from the side of the first conductive mesh 800 near the first bus bar 600 toward the center of the first conductive layer 200.

It can be understood that the edges of the first conductive layer 200 are surrounded by the first bus bar 600 and the third conductive wire 1000 to form a closed current loop, and because the conduction speed of the current on the third conductive wire 1000 is greater than that on the first conductive grid 800, the color change from the periphery to the center is formed on the color change region of the electrochromic device, so that the color change speed of the electrochromic device can be improved, and the uniformity of the electrochromic device in the color change process can be improved.

By reducing the resistance of the third conductive line 1000 such that the conduction speed of the current on the third conductive line 1000 is greater than the conduction speed of the current on the first conductive mesh 800, the conduction speed of the current at the edge of the first conductive layer 200 is increased, so that the current can be conducted from the edge of the first conductive layer 200 to the center of the first conductive layer 200, thereby increasing the color change speed of the electrochromic device.

In some embodiments of the application, the resistance of the fourth conductive line 1100 is less than the resistance of the second conductive mesh 900 in order to increase the conduction speed of the current on the fourth conductive line 1100.

Specifically, the resistance of the fourth conductive line 1100 is R ₈ Wherein R is ₅ ＞R ₈ ＞R ₆ 。

It is understood that the resistance of the second conductive layer 400 is greater than the resistance of the second conductive line 910, the resistance of the second conductive line 910 is greater than the resistance of the fourth conductive line 1100, and the resistance of the fourth conductive line 1100 is greater than the resistance of the second bus bar 700.

In addition, in the present embodiment, since the second bus bar 700 is electrically connected to the fourth conductive line 1100 and the second conductive mesh 900, respectively, and the resistance of the second conductive line 910 is greater than the resistance of the fourth conductive line 1100, that is, the resistance of the second conductive mesh 900 is greater than the resistance of the fourth conductive line 1100.

Thus, when current is conducted through the second bus bar 700 to the second conductive mesh 900 and the fourth conductive wire 1100, at this time, the conduction speed of current on the fourth conductive wire 1100 is greater than the conduction speed on the second conductive mesh 900, i.e., current can be quickly conducted on the fourth conductive wire 1100 while current is conducted through the second bus bar 700 from the side of the second conductive mesh 900 near the second bus bar 700 toward the center of the second conductive layer 400.

It can be appreciated that the second bus bar 700 and the fourth conductive wire 1100 enclose the edge of the second conductive layer 400 to form a closed current loop, and because the conduction speed of the current on the fourth conductive wire 1100 is greater than that on the second conductive grid 900, the color change from the periphery to the center is formed on the color change region of the electrochromic device, so that the color change speed of the electrochromic device can be improved, and the uniformity of the electrochromic device in the color change process can be improved.

By reducing the resistance of the fourth conductive line 1100 such that the conduction speed of the current on the fourth conductive line 1100 is greater than the conduction speed of the current on the second conductive mesh 900, the conduction speed of the current on the edge of the second conductive layer 400 is increased, so that the current can be conducted from the edge of the second conductive layer 400 to the center of the second conductive layer 400, thereby increasing the color change speed of the electrochromic device.

The method has the advantages that the edge current of the electrochromic device is equal in a manner that the color changing direction of the electrochromic device changes from the periphery to the middle, so that the situation that the local temperature is higher due to overlarge local current at the edge of the electrochromic device is avoided; meanwhile, if voltage is applied to one side only, because voltage drop exists in the conductive layer, when the area of the electrochromic device is large, the actual voltage difference of the upper and lower conductive layers far away from the voltage application side is far smaller than the actual voltage difference of the upper and lower conductive layers close to the voltage application side, and when the voltage difference is small to a certain extent, the electrochromic material cannot realize the color change effect, so that the electrochromic material far away from the voltage application side needs to be increased in value for realizing color change, the actual voltage difference of the upper and lower conductive layers close to the voltage application side is overlarge, the electrochromic material close to the voltage application side is easy to fail, and the difference of voltage differences of the device can be reduced in a manner of changing color from the periphery to the middle, so that the safety and the service life of the electrochromic device in the use process are improved.

In addition, in some embodiments of the application, by simultaneously reducing the resistances of the third and fourth conductive lines 1000 and 1100 and when the first and second bus bars 600 and 700 are connected to an external power source, respectively, it is possible to increase the conduction speed of current on the first and second conductive layers 200 and 400, thereby further increasing the color change speed of the electrochromic device.

Wherein the third conductive line 1000 and the fourth conductive line 1100 may be transparent conductive lines, and further, the third conductive line 1000 and the fourth conductive line 1100 may be non-transparent or semi-transparent conductive lines. Can be specifically set according to the actual situation.

Specifically, in order to improve the aesthetic property of the electrochromic device, the influence of the third conductive line 1000 and the fourth conductive line 1100 on the color-changing area in the electrochromic device is avoided, and in this embodiment, the third conductive line 1000 and the fourth conductive line 1100 are transparent conductive lines, respectively.

In some embodiments of the present application, the wire diameter of the third conductive wire 1000 is greater than the wire diameter of the first conductive wire 810.

It should be noted that, by increasing the wire diameter of the third conductive wire 1000 to increase the conduction speed of the current on the third conductive wire 1000, the conduction speed of the current at the edge of the first conductive layer 200 is increased, and the conduction speed of the current from the edge of the first conductive layer 200 to the center is increased, so as to increase the color changing speed of the electrochromic device.

In addition, in some embodiments of the present application, the wire diameter of the fourth conductive wire 1100 is greater than the wire diameter of the second conductive wire 910. By increasing the wire diameter of the fourth conductive wire 1100 to increase the conduction speed of the current on the fourth conductive wire 1100, the conduction speed of the current on the edge of the second conductive layer 400 is increased, and the conduction speed of the current from the edge of the first conductive layer 200 to the center is increased, so that the color changing speed of the electrochromic device is increased.

It should be noted that, in some embodiments of the present application, by providing the first bus bar 600 and the second bus bar 700 at a single side of the electrochromic device, not only the process steps are simplified, but also the production cost is reduced, and the effective color change area of the color change region in the electrochromic device is maintained while the color change speed of the electrochromic device is improved.

As shown in fig. 6, in some embodiments of the present application, a gap is provided between the first conductive mesh 800 and the first bus bar 600, that is, the first conductive mesh 800 is not directly connected to the first bus bar 600, but is indirectly electrically connected to the first conductive mesh 800 through the first conductive layer 200 or the third conductive wire 1000.

It should be noted that, since the resistance of the first conductive layer 200 is greater than the resistance of the first conductive mesh 800 and the resistance of the first conductive layer 200 is greater than the resistance of the third conductive wire 1000, when the first bus bar 600 is electrically connected to an external power source, the current is conducted at a slower speed on the first conductive layer 200 located in a gap region between the first bus bar 600 and the first conductive mesh 800 and at a faster speed on the third conductive wire 1000, and thus, when the current near one side of the first bus bar 600 is conducted to one side of the first conductive mesh 800 near the first bus bar 600, the current is completely conducted on the third conductive wire 1000.

It can be understood that at this time, the current just conducts to the edge of the first conductive mesh 800, and since the resistances of the points on the first conductive mesh 800 are the same, the conduction speeds of the points on the first conductive mesh 800 are the same, so that the current forms a uniform conduction path from the periphery to the center on the first conductive layer 200, which not only improves the color changing speed of the electrochromic device, but also makes the electrochromic device achieve a more uniform color changing effect from the periphery to the middle.

As shown in fig. 7, in some embodiments of the present application, a gap is provided between the second conductive mesh 900 and the second bus bar 700, that is, the second conductive mesh 900 is not directly connected to the second bus bar 700, but is indirectly electrically connected to the second conductive mesh 900 through the second conductive layer 400 or the fourth conductive wire 1100.

It should be noted that, since the resistance of the second conductive layer 400 is greater than the resistance of the second conductive mesh 900 and the resistance of the second conductive layer 400 is greater than the resistance of the fourth conductive wire 1100, when the second bus bar 700 is electrically connected to an external power source, the conduction speed of the current on the second conductive layer 400 located in the gap region between the second bus bar 700 and the second conductive mesh 900 is slower and the conduction speed of the current on the fourth conductive wire 1100 is faster, and therefore, when the current near the side of the second bus bar 700 is conducted to the side of the second conductive mesh 900 near the second bus bar 700, the current is fully conducted on the fourth conductive wire 1100.

It can be understood that at this time, the current just conducts to the edge of the second conductive mesh 900, and since the resistances of the points on the second conductive mesh 900 are the same, the conduction speeds of the points on the second conductive mesh 900 are equal, so that the current forms a uniform conduction path from the periphery to the center on the second conductive layer 400, which not only improves the color changing speed of the electrochromic device, but also makes the electrochromic device achieve a more uniform color changing effect from the periphery to the middle.

Additionally, in some embodiments of the present application, there is a gap between the first conductive mesh 800 and the first bus bar 600, and a gap between the second conductive mesh 900 and the second bus bar 700.

It can be appreciated that when the first bus bar 600 and the second bus bar 700 are electrically connected to an external power source, respectively, at this time, the conduction speed of the current on the first conductive layer 200 is equal to the conduction speed on the second conductive layer 400, so as to further increase the color change speed of the electrochromic device, thereby realizing the color change effect of the electrochromic device from the circumferential center.

In addition, in some embodiments of the present application, the resistance value between any point on the third conductive line 1000 and the point P on the first bus bar 600 is R ₉ A resistance value between any point on the first conductive line 810 and a point P on the first bus bar 600 is R ₁₀ Wherein R is ₉ ≤R ₁₀ 。

The position of the P point may be any point on the primary bus bar 600.

It is understood that the minimum resistance value between the point on the first conductive line 810 and the first bus bar 600 is not less than the maximum resistance value between the point on the third conductive line 1000 and the first bus bar 600. Thus, the conduction speed of the current when the current is conducted from the two ends of the third conductive wire 1000 to the middle of the third conductive wire 1000 is larger than the conduction speed of the current at any point on the first conductive wire 810, so that the current can be quickly conducted in the circumferential direction of the first conductive layer 200, and the color changing effect of the electrochromic device from the circumferential direction to the middle of the electrochromic device can be more uniform in the color changing process.

In addition, in some embodiments of the present application, the resistance value between any point on the fourth conductive line 1100 and the Q point on the second bus bar 700 is R ₁₁ Any point on the second conductive line 910A resistance value R with the Q point on the second bus bar 700 ₁₂ Wherein R is ₁₁ ≤R ₁₂ 。

The position of the Q point may be any point on the primary bus bar 600.

It is understood that the minimum resistance value between the point on the second conductive line 910 and the second bus bar 700 is not less than the maximum resistance value between the point on the fourth conductive line 1100 and the second bus bar 700. Thus, the conduction speed of the current when the current is conducted from the two ends of the fourth conductive wire 1100 to the middle of the fourth conductive wire 1100 is larger than the conduction speed of the current at any point on the second conductive wire 910, so that the current can be quickly conducted in the circumferential direction of the second conductive layer 400, and the color changing effect of the electrochromic device from the circumferential direction of the electrochromic device to the middle in the color changing process can be more uniform.

In this embodiment, the wire diameters of the first conductive wire 810 and the second conductive wire 910 are smaller than 10 μm, and the wire diameters of the first conductive wire 810 and the second conductive wire 910 may be specifically set according to practical situations.

By reducing the wire diameters of the first conductive wire 810 and the second conductive wire 910, so that in a normal state, the first conductive wire 810 and the second conductive wire 910 arranged in the electrochromic device cannot be observed by human eyes, the influence of the first conductive wire 810 and the second conductive wire 910 on the appearance of the electrochromic device is avoided, the effective color changing area of the electrochromic device is ensured, and the color changing speed of the electrochromic device is improved.

As shown in fig. 8, in some embodiments of the present application, the first bus bar 600 includes a plurality of first bus bar segments 610 spaced apart, wherein the number of first bus bar segments 610 may be any number of two or more.

The plurality of first bus bar segments 610 are respectively electrically connected with an external power supply to adjust the conduction speed of the current at different positions on the first conductive layer 200 or the conduction sequence of the current at different positions on the first conductive layer 200, so as to adjust the color change diversity of the electrochromic device.

As shown in fig. 9, in some embodiments of the present application, the second bus bar 700 includes a plurality of spaced apart second bus bar segments 710, and the number of first bus bar segments 610 may be any number of two or more.

The plurality of second bus bar segments 710 are electrically connected with an external power source respectively to adjust the conduction speed of the current at different positions on the second conductive layer 400 or the conduction sequence of the current at different positions on the second conductive layer 400, so as to adjust the color change diversity of the electrochromic device.

As shown in fig. 10, in some embodiments of the present application, at least one of the first bus bar segments 610 proximate to the third conductive line 1000 is electrically connected to the first extraction electrode 1200 and the third conductive line 1000, respectively, and the remaining first bus bar segments 610 are electrically connected to the first conductive mesh 800 and the second extraction electrode 1300.

Meanwhile, at least one of the second bus bar segments 710 close to the fourth conductive line 1100 is electrically connected to the third extraction electrode 1400 and the fourth conductive line 1100, respectively, and the remaining second bus bar segments 710 are electrically connected to the second conductive mesh 900 and the fourth extraction electrode 1500.

Specifically, when the first extraction electrode 1200 and the third extraction electrode 1400 are electrically connected to an external power source, respectively, at this time, a current is conducted on the third conductive line 1000 via the first extraction electrode 1200, that is, the current is first conducted on the third conductive line 1000, and since the conduction speed of the current on the third conductive line 1000 is greater than that on the first conductive line 810, a color change from the side where the first bus bar section 610 is not provided to the side near the first bus bar section 610 is formed on the color change region of the electrochromic device.

In addition, when the second extraction electrode 1300 and the fourth extraction electrode 1500 are electrically connected to an external power source, respectively, at this time, since the second extraction electrode 1300 is electrically connected to a side of the first conductive wire 810 close to the first bus bar section 610 through the first bus bar section 610.

Wherein the fourth extraction electrode 1500 is electrically connected to a side of the second conductive line 910 near the second bus bar segment 710 through the second bus bar segment 710, at this time, a conduction direction of current on the first conductive layer 200 is conducted from a side near the first bus bar segment 610 to a side far from the first bus bar segment 610, while a conduction direction of current on the second conductive layer 400 is conducted from a side near the second bus bar segment 710 to a side far from the second bus bar segment 710, and a color change direction of a color change region on the electrochromic device is formed from a side provided with the first bus bar segment 610 and the second bus bar segment 710 to a side far from the first bus bar segment 610 and the second bus bar segment 710.

As shown in fig. 11, in some embodiments of the present application, by electrically connecting the first extraction electrode 1200, the second extraction electrode 1300, the third extraction electrode 1400, and the fourth extraction electrode 1500, respectively, with an external power source, the conduction speed on the third conductive line 1000 and the fourth conductive line 1100, respectively, is greater than the conduction speed on the first conductive line 810 and the second conductive line 910, respectively, due to the current. Therefore, the current can be rapidly conducted to the edge of the first conductive layer 200 and the edge of the second conductive layer 400, at this time, since the resistance values of the points on the first conductive mesh 800 disposed on the first conductive layer 200 are equal, i.e., the conduction speed of the current on the first conductive mesh 800 is equal, while the resistance values of the points on the second conductive mesh 900 on the second conductive layer 400 are equal, i.e., the conduction speed of the current on the second conductive mesh 900 is equal. In the color change direction of the color change region on the electrochromic device, a color change from the circumferential direction of the electrochromic device to the center of the electrochromic device is formed.

By arranging the first bus bar 600 as a plurality of first bus bar segments 610 spaced apart, and arranging the second bus bar 700 as a plurality of second bus bar segments 710 spaced apart, at the same time, by controlling the positions and the number of the first bus bar segments 610 and the second bus bar segments 710 electrically connected to the external power source, respectively, various color changing directions of the electrochromic device are realized, and the variety of color changing of the electrochromic device is improved.

The first extraction electrode 1200, the second extraction electrode 1300, the third extraction electrode 1400, and the fourth extraction electrode 1500 are conductive structures having conductive properties, for example, conductive copper foils, respectively.

In some embodiments of the present application, the first bus bar 600 and the second bus bar 700 are each disposed at a position near one side edge of the electrochromic device. Specifically, the first bus bar 600 and the second bus bar 700 are disposed at the same side of the edge of the electrochromic device at intervals, so that the electrochromic device changes color from one side close to the first bus bar 600 and the second bus bar 700 to one side far from the first bus bar 600 and the second bus bar 700, and the electrochromic device changes color from one side to the other side. Meanwhile, the area of the wiring area is reduced, so that the area of the color-changing area is increased, and a better color-changing effect is realized.

In addition, some embodiments of the present application also provide a color-changing window comprising a window frame and the electrochromic device. The first substrate layer 100 and the second substrate layer 500 are each any one of a glass layer, a PET, and an acryl plate. For example, when the first substrate layer 100 and the second substrate layer 500 are glass layers, respectively, the electrochromic device is electrochromic glass.

Wherein the window frame is sleeved at the edge of the electrochromic device to form a color-changing window.

Specifically, the lower edges of the window frame are completely covered on the first bus bar 600 and the second bus bar 700, so as to improve the aesthetic property of the electrochromic device on the window frame, and avoid the first bus bar 600 and the second bus bar 700 from being exposed from the visible area of the color-changing window.

In addition, in some embodiments of the present application, the edge of the electrochromic device is provided with a shielding area, and the shielding area completely covers the first bus bar 600, the second bus bar 700, the third conductive wire 1000 and the fourth conductive wire 1100, so as to prevent the first bus bar 600, the second bus bar 700, the third conductive wire 1000 and the fourth conductive wire 1100 from being displayed from the visible area of the color-changing window, thereby improving the aesthetic property of the color-changing window.

Wherein the blocking area may be a black coating applied to the edge of the color-changing glass.

Any particular values in all examples shown and described herein are to be construed as merely illustrative and not a limitation, and thus other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application.

Claims (13)

1. An electrochromic device is characterized by comprising a first substrate layer, a first conductive layer, an electrochromic layer, a second conductive layer and a second substrate layer which are sequentially stacked;

the edge of the first conductive layer is provided with a first bus bar, and the edge of the second conductive layer is provided with a second bus bar;

A first conductive wire is arranged on one side of the first conductive layer along the thickness direction of the first conductive layer, the first conductive wire is electrically connected with the first bus bar, and the resistance of the first conductive wire is smaller than that of the first conductive layer; and/or a second conductive wire is arranged on one side of the second conductive layer along the thickness direction of the second conductive layer, the second conductive wire is electrically connected with the second bus bar, and the resistance of the second conductive wire is smaller than that of the second conductive layer.

2. The electrochromic device according to claim 1, wherein said first conductive lines are a plurality of, said first conductive lines being staggered to form a first conductive grid;

and/or the second conductive wires are in a plurality, and the second conductive wires are connected in a staggered manner to form a second conductive grid.

3. The electrochromic device according to claim 2, wherein said first conductive grid has a gap between said first bus bar and said first conductive grid;

and/or a gap is provided between the second conductive mesh and the second bus bar.

4. The electrochromic device according to claim 2, wherein the resistance of the first conductive layer is R ₁ The resistance of the first conductive wire is R ₂ The resistance of the first bus bar is R ₃ ；

Wherein R is ₁ ＞R ₂ ＞R ₃ ；

The resistance of the second conductive layer is R ₄ The resistance of the second conductive wire is R ₅ The resistance of the second bus bar is R ₆ ；

Wherein R is ₄ ＞R ₅ ＞R ₆ 。

5. The electrochromic device according to claim 4, wherein an edge of said first conductive layer is provided with a third conductive line, said third conductive line being electrically connected to said first conductive mesh;

and/or the edge of the second conductive layer is provided with a fourth conductive wire, and the fourth conductive wire is electrically connected with the second conductive grid.

6. The electrochromic device of claim 5, wherein the third conductive line has a resistance R ₇ The resistance of the fourth conductive wire is R ₈ ；

Wherein R is ₂ ＞R ₇ ＞R ₃ ，R ₅ ＞R ₈ ＞R ₆ 。

7. The electrochromic device according to claim 5, wherein the wire diameter of the third conductive wire is larger than the wire diameter of the first conductive wire;

and/or the wire diameter of the fourth conductive wire is larger than the wire diameter of the second conductive wire.

8. The electrochromic device according to claim 5, wherein both ends of the third conductive line are electrically connected to both ends of the first bus bar, respectively;

and/or two ends of the fourth conductive wire are respectively and electrically connected with two ends of the second bus bar.

9. The electrochromic device according to claim 5, wherein the resistance between any point on the third conductive line and point P on the first bus bar is R ₉ The resistance value between any point on the first conductive grid and the P point on the first bus bar is R ₁₀ Wherein R is ₉ ≤R ₁₀ ；

And/or the resistance value between any point on the fourth conductive wire and the Q point on the second bus bar is R ₁₁ The resistance value between any point on the second conductive grid and the Q point on the second bus bar is R ₁₂ Wherein R is ₁₁ ≤R ₁₂ 。

10. The electrochromic device according to claim 5, wherein said first bus bar comprises a plurality of spaced apart first bus bar segments;

and/or the second bus bar comprises a plurality of spaced apart second bus bar segments.

11. The electrochromic device according to claim 10, wherein at least one of said first bus bar segments proximate to said third conductive line is electrically connected to a first extraction electrode and said third conductive line, respectively, the remaining of said first bus bar segments being electrically connected to said first conductive mesh and second extraction electrode;

and/or at least one second bus bar section close to the fourth conductive wire is electrically connected with a third extraction electrode and the fourth conductive wire respectively, and the rest of the second bus bar sections are electrically connected with the second conductive grid and the fourth extraction electrode.

12. The electrochromic device according to claim 1, wherein the first and second bus bars are each disposed at a position near one side edge of the electrochromic device.

13. A color-changing window comprising a window frame and the electrochromic device of any one of claims 1 to 12;

the lower edge of the window frame completely covers the first bus bar and the second bus bar.

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