CN212623492U - Conducting structure of electrochromic device - Google Patents

Abstract

The utility model discloses a conduction structure of electrochromic device belongs to color-changing device technical field. The conducting structure of the electrochromic device comprises a first conductive substrate layer, an electrochromic layer and a second conductive substrate layer, wherein the first conductive substrate layer is sequentially overlapped with the first transparent conductive layer and the first substrate layer, the second conductive substrate layer is sequentially overlapped with the second transparent conductive layer and the second substrate layer, a separation groove is formed in the second transparent conductive layer to enable the second transparent conductive layer to be divided into two mutually independent first conductive areas and second conductive areas, at least part of the electrochromic layer corresponding to the second conductive areas is removed to form a conducting opening, the conducting opening is filled with a conducting piece with conductivity, and the conducting piece is used for being electrically connected with the first transparent conductive layer and the second conductive areas. The conducting structure of the electrochromic device only needs one-time hot-press welding, the process is simple, the efficiency is high, and the yield is favorably improved.

Description

Conducting structure of electrochromic device

Technical Field

The utility model relates to a color-changing device technical field especially relates to a conduction structure of electrochromic device.

Background

The electrochromic phenomenon refers to a reversible change phenomenon of color and transparency, which is caused by reversible redox reaction of a material under the action of an external electric field, and the change of optical properties (such as transmittance, absorptivity and reflectivity) of the material is shown in appearance. Therefore, the electrochromic device has been widely applied to the industries of electrochromic energy-saving smart windows, automobile rearview anti-dazzle mirrors, display devices and the like. In the prior art, when electrodes of an electrochromic device are led out, an electrode lead connected with a first transparent conducting layer and an electrode lead connected with a second transparent conducting layer are usually led out from an upper conductive substrate and a lower conductive substrate respectively, and hot-press welding needs to be performed twice, for example, after the electrode lead of a lower piece is welded, the electrochromic device is turned over, and the electrode lead of the upper piece is welded, so that the process is complex, the automatic production is not facilitated, the working efficiency is low, and the yield is not improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a conducting structure of electrochromic device, this conducting structure of electrochromic device only need a hot pressure welding, and simple process, and efficiency is higher, is favorable to improving the yield.

To achieve the purpose, the utility model adopts the following technical proposal:

a conducting structure of an electrochromic device comprises a first conductive substrate layer, an electrochromic layer and a second conductive substrate layer which are sequentially overlapped, wherein the first conductive substrate layer comprises a first transparent conductive layer and a first substrate layer which are sequentially overlapped, the first transparent conductive layer is adhered to one side of the electrochromic layer, the second conductive substrate layer comprises a second transparent conductive layer and a second substrate layer which are sequentially overlapped, and the second transparent conductive layer is adhered to the other side of the electrochromic layer; the second transparent conducting layer is provided with a partition groove so that the second transparent conducting layer is divided into a first conducting area and a second conducting area which are independent of each other, at least part of the electrochromic layer corresponding to the second conducting area is removed to form a conducting opening, a conducting piece with conductivity is filled in the conducting opening, and the conducting piece is used for electrically connecting the first transparent conducting layer and the second conducting area.

Optionally, at least the surface of the first conductive region close to one side of the partition groove is covered by the electrochromic layer.

Optionally, at least part of the surface of the peripheral side of the via is in close proximity to the electrochromic layer.

Optionally, the via penetrates through the first conductive base layer.

Optionally, at least part of the surface of the top side of the conducting piece overflows the conducting opening and covers at least part of a face of the first conductive substrate layer away from the electrochromic layer.

Optionally, at least a portion of a surface of the peripheral side of the via is not proximate to the electrochromic layer.

Optionally, the top side of the via overlies under the first conductive base layer.

Optionally, the conducting structure of the electrochromic device further includes a conductor disposed on a surface and/or inside the first transparent conductive layer, and the conductor is connected to the conducting member.

Optionally, the electrochromic layer comprises an electrochromic material layer, an electrolyte layer and an ion storage layer which are sequentially stacked.

Optionally, a water and oxygen blocking layer is arranged on one side, far away from the electrochromic layer, of the first substrate layer; and/or a water oxygen barrier layer is arranged on one surface, far away from the electrochromic layer, of the second base material layer.

The utility model discloses for prior art's beneficial effect: at first etch the second transparent conducting layer, thereby offer and separate the groove so that the second transparent conducting layer is divided into two first conductive areas and the second conductive area independent of each other, at least part electrochromic layer that the second conductive area corresponds is got rid of in order to form the conduction mouth, the conduction mouth is filled with the conduction piece, the conduction piece is connected first transparent conducting layer and second conductive area electricity, thereby realize that the homonymy electrode is drawn forth, consequently, the electrode lead wire for connecting first transparent conducting layer and the electrode lead wire for connecting the second transparent conducting layer can all be drawn forth from the second conductive substrate layer, be convenient for accomplish the welding to two electrode leads of electrochromic device simultaneously through one-time thermocompression bonding promptly, moreover, the process is simple, be favorable to realizing automated production, and greatly improved work efficiency and product yield.

Drawings

Fig. 1 is a schematic structural diagram of a conducting structure of an electrochromic device without a conducting element according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a conducting structure of an electrochromic device according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a conducting structure of an electrochromic device according to a second embodiment of the present invention;

fig. 4 is a schematic diagram of a conducting structure of an electrochromic device according to a third embodiment of the present invention;

fig. 5 is a schematic diagram of a conducting structure of an electrochromic device according to a fourth embodiment of the present invention;

fig. 6 is a schematic view of a conducting structure of an electrochromic zone according to a fifth embodiment of the present invention.

Reference numerals:

a first conductive substrate layer-1; a first transparent conductive layer-11; a first substrate layer-12; electrochromic layer-2; a second conductive substrate layer-3; a second transparent conductive layer-31; a first conductive region-311; a second conductive region-312; a second substrate layer-32; a separation groove-4; a conduction opening-5; a conducting piece-6; an electrical conductor-7; a water oxygen barrier layer-8; photoresist layer-9.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.

Specific structures of the on structures of the electrochromic device according to the embodiment of the present invention are described below with reference to fig. 1 to 6.

As shown in fig. 1 to 6, the present embodiment provides a conducting structure of an electrochromic device, including a first conductive substrate layer 1, an electrochromic layer 2, and a second conductive substrate layer 3, which are sequentially stacked, where the first conductive substrate layer 1 includes a first transparent conductive layer 11 and a first substrate layer 12, which are sequentially stacked, the first transparent conductive layer 11 is bonded to one side of the electrochromic layer 2, the second conductive substrate layer 3 includes a second transparent conductive layer 31 and a second substrate layer 32, which are sequentially stacked, and the second transparent conductive layer 31 is bonded to the other side of the electrochromic layer 2; the second transparent conductive layer 31 is provided with a separation groove 4 so that the second transparent conductive layer 31 is divided into two mutually independent first conductive regions 311 and second conductive regions 312, at least a portion of the electrochromic layer 2 corresponding to the second conductive region 312 is removed to form a conduction opening 5, a conduction piece 6 with conductivity is poured into the conduction opening 5, and the conduction piece 6 is used for electrically connecting the first transparent conductive layer 11 and the second conductive region 312.

It should be noted that, first, the second transparent conductive layer 31 is etched, so that the partition groove 4 is formed to divide the second transparent conductive layer 31 into two mutually independent first conductive regions 311 and second conductive regions 312, at least a portion of the electrochromic layer 2 corresponding to the second conductive region 312 is removed to form a conduction port 5, the conduction port 5 is filled with a conduction piece 6 in a liquid form, after the conduction piece 6 in the liquid form is changed into the conduction piece 6 in a solid form, the conduction piece 6 is respectively communicated with the first transparent conductive layer 11 and the second conductive region 312 located at the conduction port 5, the first transparent conductive layer 11 and the second conductive region 312 are electrically connected, so as to achieve electrode leading-out on the same side, and therefore, the electrode lead for connecting the first transparent conductive layer 11 and the electrode lead for connecting the second transparent conductive layer 31 can both be led out from the second conductive substrate layer 3, the welding of two electrode leads of the electrochromic device can be completed through one-time hot-press welding, the process is simple, the automatic production is facilitated, and the working efficiency and the product yield are greatly improved.

In the present invention, at least one of the first substrate layer 12 and the second substrate layer 32 is preferably transparent for displaying the change in the optical properties of the electrochromic device.

The material of the first conductive base layer 1 and the second conductive base layer 3 may be glass, plastic, or the like. The plastic substrate material includes, but is not limited to, any one of or a combination of at least two of polyethylene terephthalate (PET), cyclic olefin copolymer, or cellulose triacetate, and typical but non-limiting combinations include combinations of PET with cyclic olefin copolymer, cyclic olefin copolymer with cellulose triacetate, PET with cellulose triacetate, or PET, cyclic olefin copolymer with cellulose triacetate. Preferably, the plastic base material has a thickness of 20 to 500. mu.m, and may be, for example, 20. mu.m, 50. mu.m, 100. mu.m, 150. mu.m, 200. mu.m, 250. mu.m, 300. mu.m, 350. mu.m, 400. mu.m, 450. mu.m or 500. mu.m, but is not limited to the values recited, and other values not recited within the range of values are equally applicable; when the material of the substrate layer is glass, the thickness of the substrate layer is not limited too much, and those skilled in the art can select the substrate layer reasonably according to the actual application.

At least one of the first transparent conductive layer 11 and the second transparent conductive layer 31 is preferably transparent for exhibiting a change in optical properties of the electrochromic device. The material of the transparent conductive layer includes, but is not limited to, any one or a combination of at least two of Indium Tin Oxide (ITO), Aluminum Zinc Oxide (AZO), fluorine-doped tin oxide (FTO), nano silver wire, graphene, carbon nanotube, metal mesh, or silver nanoparticle; typical but non-limiting combinations include combinations of ITO and ZAO, AZO and FTO, silver nanowires and graphene, graphene and carbon nanotubes, carbon nanotubes and metal grids, metal grids and silver nanoparticles, silver nanowires and silver nanoparticles, ITO, AZO and silver nanowires, graphene and carbon nanotubes, graphene, carbon nanotubes, metal grids and silver nanoparticles, or ITO, AZO, FTO, silver nanowires, graphene, carbon nanotubes, metal grids and silver nanoparticles. The thickness of the conductive layer is 0.1nm to 10 μm, and may be, for example, 0.1nm, 0.5nm, 1nm, 5nm, 10nm, 100nm, 500nm, 1 μm, 3 μm, 5 μm, 7 μm or 10 μm, but is not limited to the values listed, and other values not listed in the numerical range are also applicable, and more preferably 0.1nm to 1 μm.

The Electrochromic layer 2 is a transmittance-tunable sheet composed of one or more layers of materials in a gel state or a solid state, such as Polymer Dispersed Liquid Crystal (PDLC) glass, Suspended Particle Device (SPD), Electrochromic (EC), and the like.

The conducting piece 6 is made of a material with high conductivity, such as silver paste, and the like, and of course, in other embodiments of the present invention, the conducting piece 6 can be selected according to actual needs.

Alternatively, as shown in fig. 1 to 6, at least the surface of the first conductive region 311 near the side of the partition groove 4 is covered with the electrochromic layer 2.

It should be explained that, because the surface of the first conductive region 311 close to the blocking slot 4 is covered by the electrochromic layer 2, after the conductive via 5 is filled with the conductive member 6, the conductive member 6 does not contact the first conductive region 311, so that the first conductive region 311 and the second conductive region 312 are not electrically connected, and a short circuit of the electrochromic device is avoided.

Alternatively, as shown in fig. 2, 3, 4, 5, and 6, at least a partial surface of the peripheral side of the via 6 is adjacent to the electrochromic layer 2.

It should be noted that, since at least a part of the surface of the peripheral side of the via 6 is in close proximity to the electrochromic layer 2, it functions to support and fix the via 6, thereby ensuring reliability of electrical connection of the first transparent conductive layer 11 with the second conductive region 312 through the via 6. In some embodiments as shown in fig. 2 and 3, a part of the surface of the peripheral side of the via 6 is adjacent to the electrochromic layer 2, and the vias 5 are all arranged to be open; in some embodiments, as shown in fig. 4 and 5, the entire surface of the peripheral side of the via 6 is immediately adjacent to the electrochromic layer 2, the via 5 being in the form of a receiving groove or cavity. The entire surface of the peripheral side of the via 6 adjacent to the electrochromic layer 2 has a better supporting effect and is more stable than the partial surface adjacent to the electrochromic layer 2.

Alternatively, as shown in fig. 1 to 4 and 6, the conduction hole 5 penetrates through the first conductive base layer 1. It will be appreciated that providing the vias 5 through the first conductive substrate layer 1 facilitates pouring the vias 6 in liquid form into the vias 5 from the top along the side of the electrochromic device near the vias 5, making the electrical connection of the vias 6 with the first transparent conductive layer 11 and the second conductive area 312 more stable.

Optionally, as shown in fig. 3, at least a part of the surface of the top side of the via 6 overflows the via 5 and covers at least a part of a side of the first conductive base layer 1 away from the electrochromic layer 2.

It should be explained that, in the embodiment shown in fig. 3, since at least a part of the surface of the top side of the conducting member 6 overflows the conducting opening 5 and covers at least a part of the first conductive substrate layer 1 away from the electrochromic layer 2, the end surfaces of the conducting member 6 and the first substrate layer 12 are not easily cracked, thereby avoiding the electrical connection failure between the first transparent conductive layer 11 and the second conductive region 312, achieving a better bonding effect, and improving the production yield.

Alternatively, as shown in fig. 2 and 3, at least a part of the surface of the peripheral side of the via 6 is not adjacent to the electrochromic layer 2.

It is understood that, as in the embodiments shown in fig. 2 and 3, at least part of the surface of the peripheral side of each of the conductive members 6 is not adjacent to the electrochromic layer 2. When the conduction opening 5 is formed, for example, the first conductive substrate layer 1 corresponding to the conduction opening 5 region can be removed after laser cutting, and then the material of the electrochromic layer 2 in the conduction opening 5 is removed by wiping, as shown in fig. 2 and 3, the right side of the conduction opening 5 is not blocked by the material and the like, so that both the first conductive substrate layer 1 and the electrochromic layer 2 are easier to realize in the process, and the product yield is greatly improved. With the structure shown in fig. 2 and 3, the via 6 covers the sidewall of the left side of the via 5, and adheres to the side surfaces of the first conductive substrate layer 1 and the electrochromic layer 2, so as to electrically connect the first transparent conductive layer 11 and the second conductive region 312. As a preferable scheme, in order to avoid the conducting piece 6 from being cracked from the side surfaces of the first conductive substrate layer 1 and the electrochromic layer 2, the top portion of the conducting piece 6 covers the surface of the first conductive substrate layer 1, so that the connection stability of the conducting piece 6 with the side surfaces of the first conductive substrate layer 1 and the electrochromic layer 2 is enhanced, the reliability of the electrical connection of the first transparent conductive layer 11 and the second conductive region 312 is ensured, the failure of a product due to disconnection is avoided, and the yield of the product is greatly improved.

Alternatively, as shown in fig. 5, the top side of the via 6 is overlaid under the first conductive base layer 1. In the embodiment shown in fig. 5, at least two adjacent sides of the first conductive substrate layer 1 corresponding to the top side of the conduction opening 5 are etched, the etched first conductive substrate layer 1 is lifted or taken out, the conduction piece 6 is dotted in the conduction opening 5 by using a needle, and then the first conductive substrate layer 1 is fixed at the original position.

Optionally, as shown in fig. 1 to 5, the conducting structure of the electrochromic device further includes an electrical conductor 7, the electrical conductor 7 is disposed on the surface and/or inside the first transparent conductive layer 11, and the electrical conductor 7 is connected to the conducting member 6.

The electric conductor 7 of the utility model adopts a metal material with higher electric conductivity, such as any one or the combination of at least two of conductive silver paste, conductive copper paste, conductive carbon paste, nano-silver conductive ink, copper foil, copper wire or conductive adhesive film; typical but non-limiting combinations include combinations of conductive silver paste and conductive copper paste, combinations of conductive copper paste and conductive carbon paste, combinations of conductive carbon paste and nano-silver conductive ink, combinations of nano-silver conductive ink and conductive adhesive film, combinations of copper foil and copper wire, conductive silver paste, conductive copper paste and conductive carbon paste, combinations of conductive silver paste, conductive carbon paste and nano-silver conductive ink, combinations of conductive copper paste, conductive carbon paste and conductive adhesive film or combinations of conductive silver paste, conductive copper paste, conductive carbon paste, nano-silver conductive ink, copper wire, copper foil and conductive adhesive film, preferably conductive silver paste.

It can be understood that, since the conductive body 7 is disposed on the surface and/or inside the first transparent conductive layer 11 and the conductive body 7 is connected to the conducting member 6, the provision of the conductive body 7 facilitates the rapid transfer of electrons from the conducting member 6 to the whole first transparent conductive layer 11, thereby increasing the conductive rate and the color change speed.

It should be noted that the conductive body 7 may also be disposed on the first conductive region 311 and the second conductive region 312, so that the conductive performance is further improved on the basis that the first conductive region 311 and the second conductive region 312 can conduct electricity, and the conduction yield is further improved.

Optionally, the electrochromic layer 2 comprises a stack of an electrochromic material layer, an electrolyte layer and an ion storage layer. The materials of the electrochromic material layer, the electrolyte layer and the ion storage layer can be the materials in the prior art, and the present invention is not limited to this.

Optionally, a water and oxygen barrier layer is arranged on one side of the first substrate layer 12 away from the electrochromic layer 2; the side of the second substrate layer 32 away from the electrochromic layer 2 is provided with a water oxygen barrier layer. It can be understood that one side of the first substrate layer 12 and the second substrate layer 32 can better isolate external water vapor and oxygen by using the water-oxygen barrier layer, thereby avoiding the phenomenon that the water vapor and oxygen enter the electrochromic layer 2 to affect the normal operation thereof.

Specifically, the water oxygen barrier layer may be hard glass or a flexible water oxygen barrier film of the prior art, which is not particularly limited herein.

Advantageously, as shown in fig. 6, the electrochromic device further comprises a photoresist layer bonded to a side of the first substrate layer 12 and/or the second substrate layer 32 remote from the electrochromic layer 2. It can be understood that the optical cement layer can effectively connect the water and oxygen barrier layer with the first substrate layer 12 and/or the second substrate layer 32, and the connection is firm and stable, and the bonding strength is good. The Optical adhesive layer may use any one of PolyVinyl Butyral (PVB), Ethylene-vinyl Acetate Copolymer (EVA), oca (Optical Clear adhesive), SCA (SCA Optical adhesive), ionic intermediate film (Surper Safe Glas, SGP), liquid Optical adhesive loca (liquid Optical Clear adhesive), or acryl, or a combination of at least two thereof.

The following describes five preferred embodiments of the present invention in detail with reference to fig. 2 to 6.

The first embodiment is as follows:

as shown in fig. 2, a conducting structure of an electrochromic device includes a first conductive substrate layer 1, an electrochromic layer 2, and a second conductive substrate layer 3, which are sequentially stacked, where the first conductive substrate layer 1 includes a first transparent conductive layer 11 and a first substrate layer 12, which are sequentially stacked, the first transparent conductive layer 11 is connected to one side of the electrochromic layer 2, the second conductive substrate layer 3 includes a second transparent conductive layer 31 and a second substrate layer 32, which are sequentially stacked, the second transparent conductive layer 31 is connected to the other side of the electrochromic layer 2, a separating groove 4 is formed on the second transparent conductive layer 31 to divide the second transparent conductive layer 31 into two mutually independent first conductive regions 311 and second conductive regions 312, at least a portion of the electrochromic layer 2 corresponding to the second conductive region 312 is removed to form a conducting opening 5, the conducting opening 5 is open, a conducting piece 6 with conductivity is filled in the conducting opening 5, the via 6 is used to electrically connect the first transparent conductive layer 11 and the second conductive region 312. The surface of the first conductive region 311 on the side close to the partition groove 4 is covered with the electrochromic layer 2, a part of the surface of the peripheral side of the conduction piece 6 is adjacent to the electrochromic layer 2, a part of the surface is not adjacent to the electrochromic layer 2, and the conduction port 5 penetrates through the first conductive substrate layer 1.

Example two:

the electrochromic device shown in fig. 3 has substantially the same structure as the first embodiment, except that at least part of the surface of the top side of the conducting member 6 overflows the conducting opening 5 and covers at least part of the surface of the first conductive substrate layer 1 away from the electrochromic layer 2.

Example three:

the electrochromic device shown in fig. 4 has substantially the same structure as the first embodiment, except that the conduction port 5 is a receiving groove with an upward opening, and the entire surface of the peripheral side of the conduction member 6 is adjacent to the electrochromic layer 2.

Example four:

the electrochromic device shown in fig. 5 has substantially the same structure as the first embodiment, except that the conduction port 5 is a closed accommodation chamber, the entire surface of the peripheral side of the conduction piece 6 is adjacent to the electrochromic layer 2, and the top side of the conduction piece 6 is covered under the first conductive substrate layer 1.

Example five:

the electrochromic device shown in fig. 6 has substantially the same structure as in the first embodiment, except that the water oxygen barrier layer 8 is bonded to the first substrate layer 12 and the second substrate layer 32 on the side away from the electrochromic layer 2 by the photoresist layer 9. The widths of the water oxygen barrier layer 8 and the optical cement layer 9 positioned outside the first substrate layer 12 as shown in fig. 6 are narrower than that of the first substrate layer 12, so that the top part of the conducting piece 6 can be covered on the surface of the first substrate layer 12, the connection stability of the conducting piece 6 and the side surfaces of the first conductive substrate layer 1 and the electrochromic layer 2 is enhanced, the reliability of the electrical connection of the first transparent conductive layer 11 and the second conductive region 312 is ensured, the failure of the product caused by open circuit is avoided, and the yield of the product is greatly improved. In the preparation process, the water-oxygen barrier layer 8 and the optical adhesive layer 9 can be attached to the side edge of the first substrate layer 12 at a certain distance in advance to provide a surface of the first substrate layer 12 with a certain area for the conduction piece 6 to attach; also can laminate earlier with the optical cement layer 9 and the water oxygen barrier layer 8 of first substrate layer 12 with wide, excise a small segment water oxygen barrier layer 8 and optical cement layer 9 along the side of first substrate layer 12 again to form like naked first substrate layer 12 surface on 6, supply to switch on 6 and adhere to.

In the description herein, references to the description of "some embodiments," "other embodiments," or the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Further, it is to be understood that the terms "upper", "lower", "inner", "outer", "vertical", "horizontal", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "connected," "mounted," "secured," and the like are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other suitable relationship. The above-mentioned meaning belonging to the present invention can be understood by those skilled in the art according to the specific situation.

Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims (10)

1. The conducting structure of the electrochromic device is characterized by comprising a first conductive substrate layer (1), an electrochromic layer (2) and a second conductive substrate layer (3) which are sequentially stacked, wherein the first conductive substrate layer (1) comprises a first transparent conductive layer (11) and a first substrate layer (12) which are sequentially stacked, the first transparent conductive layer (11) is bonded to one side of the electrochromic layer (2), the second conductive substrate layer (3) comprises a second transparent conductive layer (31) and a second substrate layer (32) which are sequentially stacked, and the second transparent conductive layer (31) is bonded to the other side of the electrochromic layer (2);

the second transparent conducting layer (31) is provided with a partition groove (4) so that the second transparent conducting layer (31) is divided into a first conducting area (311) and a second conducting area (312) which are independent of each other, at least a part of the electrochromic layer (2) corresponding to the second conducting area (312) is removed to form a conducting opening (5), a conducting piece (6) with conductivity is poured into the conducting opening (5), and the conducting piece (6) is used for electrically connecting the first transparent conducting layer (11) with the second conducting area (312).

2. Conducting structure of an electrochromic device according to claim 1, characterized in that at least the surface of the first conductive area (311) close to the side of the blocking trench (4) is covered by the electrochromic layer (2).

3. A via structure for an electrochromic device according to claim 1, characterized in that at least part of the surface of the peripheral side of the via (6) is in close proximity to the electrochromic layer (2).

4. The via structure of an electrochromic device according to claim 3, characterized in that the via (5) penetrates the first conductive base layer (1).

5. Conducting structure for an electrochromic device according to claim 4, characterized in that at least part of the surface of the top side of the conducting means (6) overflows the conducting opening (5) and covers at least part of the side of the first conductive substrate layer (1) remote from the electrochromic layer (2).

6. Conducting structure for an electrochromic device according to claim 4, characterised in that at least part of the surface of the peripheral side of the conducting means (6) is not adjacent to the electrochromic layer (2).

7. The via structure of an electrochromic device according to claim 3, characterized in that the top side of the via (6) is overlaid under the first conductive substrate layer (1).

8. The via structure of an electrochromic device according to claim 1, further comprising an electrical conductor (7), wherein the electrical conductor (7) is disposed on the surface and/or inside the first transparent conductive layer (11), and the electrical conductor (7) is connected to the via (6).

9. The conducting structure of an electrochromic device according to claim 1, characterized in that said electrochromic layer (2) comprises a layer of electrochromic material, a layer of electrolyte and a layer of ion storage, superimposed in this order.

10. The conducting structure of an electrochromic device according to claim 1, characterized in that a water-oxygen barrier layer is arranged on the side of the first substrate layer (12) far away from the electrochromic layer (2); and/or a water oxygen barrier layer is arranged on one side, far away from the electrochromic layer (2), of the second substrate layer (32).

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