CN114442395A - Electrochromic device, electrode structure and preparation method thereof, glass assembly and vehicle - Google Patents
Electrochromic device, electrode structure and preparation method thereof, glass assembly and vehicle Download PDFInfo
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- CN114442395A CN114442395A CN202210093908.6A CN202210093908A CN114442395A CN 114442395 A CN114442395 A CN 114442395A CN 202210093908 A CN202210093908 A CN 202210093908A CN 114442395 A CN114442395 A CN 114442395A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/153—Constructional details
- G02F1/155—Electrodes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J3/00—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles
- B60J3/04—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles adjustable in transparency
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Abstract
The invention relates to an electrochromic device, an electrode structure and a preparation method thereof, a glass assembly and a vehicle, wherein the electrochromic device comprises: an electrode layer for laminating on the electrochromic layer; the conductive band, the conductive band includes mutual electric connection's area somatic part and epitaxial portion, take somatic part from the proximal end of electrode layer arranges to the distal end of electrode layer, the epitaxial portion extends to outside the electrode layer, be equipped with intensity lifting layer on the epitaxial portion. The conductive band is directly designed to comprise the band body part and the extension part, and an external lead structure is not needed to realize the electrical connection relation. On the one hand, the structure is simplified, and on the other hand, the interface resistance is reduced. Since the extension portion for externally connecting the circuit is directly a part of the conductive tape, there is a case where mechanical strength is low compared to an externally connected lead structure. On the basis, the strength improving layer is further arranged on the extension part to protect the extension part and avoid bending, breaking and the like in the assembling or transporting process.
Description
Technical Field
The invention relates to the technical field of electrochromic devices, in particular to an electrochromic device, an electrode structure and a preparation method thereof, a glass assembly and a vehicle.
Background
The electrochromic device is a device which can generate stable and reversible color change under the action of an external electric field by utilizing an electrochromic material, so that the color and the transparency can be reversibly changed from the appearance. The glass has wide application in occasions such as dimmable glass and the like. The electrode structure in an electrochromic device is then the structure for supplying an electric current (electric field) to the electrochromic material layer. At present, an electrochromic material layer is arranged on an electrode layer, and a transparent electrode layer usually has a certain sheet resistance, so that a large voltage drop is brought in the working process of an electrochromic device, and the color change response of an area far away from a current access point is slow. Thus, the introduction of a long current lead, which is highly conductive, directs the applied current (electric field) to the distal end with minimal voltage drop. In order to improve the synchronism of color change response of each region of the electrochromic material layer, a strip-shaped conductive strip with higher conductivity is generally arranged on the electrode layer, and the conductive strip extends from the near end to the far end of the transparent electrode layer so as to lead the external current to the far end in a mode of extremely small voltage drop. Generally, the conductive tape is thin, low in mechanical strength and not resistant to bending, cannot be directly connected with an external circuit, and a conductive structure with high strength is externally connected to the conductive tape in the existing manufacturing process of the electrochromic device to connect the conductive tape to the external circuit. However, the external conductive structure will result in a complex overall structure and also increase the interface resistance.
Disclosure of Invention
The invention provides an electrochromic device, an electrode structure and a preparation method thereof, a glass assembly and a vehicle, aiming at the problems that the whole structure is complex and the interface resistance is increased when the mechanical strength is ensured, and the mechanical strength can be ensured under the conditions that the structure is simplified and the interface resistance is effectively reduced.
An electrode structure of an electrochromic device, comprising:
an electrode layer for laminating on the electrochromic layer;
the conductive band, the conductive band includes mutual electric connection's area somatic part and epitaxial portion, take somatic part from the proximal end of electrode layer arranges to the distal end of electrode layer, the epitaxial portion extends to outside the electrode layer, be equipped with intensity lifting layer on the epitaxial portion.
The scheme provides an electrode structure of an electrochromic device, and the conductive belt is designed to comprise the belt body part and the epitaxial part, so that an external lead structure is not needed to realize an electric connection relation. On the one hand, the structure is simplified, and on the other hand, the interface resistance is reduced. Since the extension portion for externally connecting the circuit is directly a part of the conductive tape, there is a case where mechanical strength is low compared to an externally connected lead structure. On the basis, the strength improving layer is further arranged on the extension part, so that the extension part is protected, and the conditions of bending or/and breaking and the like in the assembling or transporting process are avoided.
In one embodiment, at least part of the strength-enhancing layer and the electrode layer are located on the same side of the conductive strip;
and/or at least part of the strength-enhancing layer and the electrode layer are located on opposite sides of the conductive strip.
In one embodiment, the peel strength between the strength-enhancing layer and the epitaxial portion is not less than 0.02N/mm;
and/or the strength promoting layer extends to the outside of the extension part, and the extension length of the strength promoting layer extending to the outside of the extension part is not more than 3 mm.
In one embodiment, the thickness of the electrode layer is H, at least a portion of the strength-enhancing layer and the electrode layer are located on the same side of the conductive tape, and the portion of the strength-enhancing layer on the same side as the electrode layer is a strength-enhancing layer a, and the thickness of the strength-enhancing layer a is not greater than 2 × H.
In one embodiment, at least a part of the strength-increasing layer and the electrode layer are located on the same side of the conductive tape, and the part of the strength-increasing layer located on the same side as the electrode layer is a strength-increasing layer A which partially covers the electrode layer, and the depth of the strength-increasing layer A covering the electrode layer is not more than 3 mm.
In one embodiment, at least one of the side of the electrode layer on which the conductive tape is disposed and the side of the conductive tape facing away from the electrode layer is further provided with a functional layer, at least a portion of the strength-enhancing layer and the electrode layer are located on opposite sides of the conductive tape, the portion of the strength-enhancing layer located on the opposite side of the electrode layer is a strength-enhancing layer B, the thickness of the strength-enhancing layer B is not greater than the height of the functional layer protruding out of the conductive tape, and/or the strength-enhancing layer B is bonded to the functional layer.
In one embodiment, the strength-enhancing layer is an insulating layer, and the extension portion is at least partially exposed outside the strength-enhancing layer;
or the strength improving layer comprises a conductive part, the conductive part is electrically connected with the epitaxial part, and the conductive part extends to the surface of the strength improving layer, which is not contacted with the epitaxial part;
alternatively, the strength-enhancing layer contains conductive particles.
In one embodiment, the strength-enhancing layer is a flat membrane, or the strength-enhancing layer is a hollow structure layer, or the strength-enhancing layer is a spinning structure layer.
In one embodiment, the electrode layer comprises a transparent conductive layer and a transparent substrate, and the transparent substrate and the strip body part are respectively positioned at two sides of the transparent conductive layer;
and/or the belt body part and the extension part have consistent mechanical strength performance;
and/or, the strength-enhancing layer comprises a layer of self-healing material.
An electrochromic device comprising an electrochromic layer and an electrode structure of the electrochromic device of any of the above embodiments, the electrode layer of the electrode structure being laminated on the electrochromic layer.
According to the scheme, the electrode structure of the electrochromic device in any one of the embodiments is adopted, so that the structure can be simplified, the interface resistance is reduced, and the mechanical strength of the position of an external circuit can be guaranteed.
A glass assembly comprising a first glass, a second glass and the electrochromic device described above, the electrochromic device being sandwiched between the first glass and the second glass.
According to the scheme, the electrochromic device in any one of the embodiments is arranged between the first glass and the second glass, so that the structure can be simplified, the interface resistance can be reduced, and the mechanical strength of an external circuit position can be guaranteed.
A vehicle comprises the glass assembly.
The above scheme provides a vehicle, the above glass assembly is arranged on the vehicle, so that the color or transparency of the glass can be adjusted according to the requirement. Moreover, the electrochromic device in the glass assembly is the electrochromic device in the embodiment, so that the glass assembly has the characteristics of simple structure and reduced interface resistance, and the mechanical strength of the position of an external circuit is guaranteed.
A preparation method of an electrode structure of an electrochromic device comprises the following steps:
processing the conductive tape into a shape including a tape body portion and an extension portion electrically connected to each other;
arranging the ribbon body portion in a proximal to distal direction of the electrode layer and ensuring that the epitaxial portion extends outside the electrode layer;
a strength-enhancing layer is provided on the epitaxial portion.
According to the scheme, the conductive belt is directly cut into the shape containing the belt body part and the epitaxial part, then the belt body part is arranged on the electrode layer, the epitaxial part extends out of the electrode layer and is used for an external circuit, and then the strength improving layer is arranged on the epitaxial part. The electrode structure prepared in the way has the characteristics of simple structure, reduced interface resistance and strength meeting the requirements of an external circuit.
In one embodiment, the step of processing the conductive strip into a shape including a strip body portion and an extension portion electrically connected to each other specifically includes:
cutting a conductive strip into strips, wherein the conductive strip is divided into a strip body part and an extension part in the length direction of the conductive strip;
and/or the step of providing a strength-enhancing layer on the epitaxial portion specifically comprises:
and coating the strength enhancement layer stock solution on the extension part, and curing to form the strength enhancement layer.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a top view of an electrode structure of a conventional electrochromic device;
FIG. 2 is a front view of the electrode structure shown in FIG. 1;
FIG. 3 is a top view of the electrode structure of this embodiment;
FIG. 4 is a front view of the electrode structure shown in FIG. 3;
FIG. 5 is a top view of another embodiment of an electrode structure;
FIG. 6 is a front view of the electrode structure shown in FIG. 5;
FIG. 7 is a front view of an electrode structure according to yet another embodiment;
FIG. 8 is a front view of an electrode structure according to yet another embodiment;
FIG. 9 is a front view of the electrode structure with the strength-enhancing layer overlying the electrode layer;
FIG. 10 is a bottom view of the electrode structure of FIG. 9;
FIG. 11 is a front view of the electrode structure with the strength-enhancing layer bonded to the functional layer;
fig. 12 is a bottom view of the electrode structure shown in fig. 11.
Description of reference numerals:
10. an electrode structure; 11. an electrode layer; 12. a conductive tape; 121. a belt body portion; 122. an extension portion; 13. a strength-enhancing layer; 14. a functional layer; 20. and (5) a lead structure.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
As shown in fig. 1 and 2, in a general electrode structure 10 of a conventional electrochromic device, a conductive tape 12 covers only an electrode layer 11, and the conductive tape 12 has a small thickness, is easily bent and broken, and is externally connected with a circuit by additionally providing a lead structure 20 on the conductive tape 12. Although the additional lead structure 20 has better mechanical strength and bending resistance, and can meet the requirements of an external circuit, the overall structure is complex and the interface resistance is increased.
Based on this, as shown in fig. 3 to 12, in one embodiment, there is provided an electrode structure 10 of an electrochromic device, including:
an electrode layer 11, the electrode layer 11 being for lamination on the electrochromic layer;
the electrode structure comprises a conductive strip 12, wherein the conductive strip 12 comprises a strip body part 121 and an outer extension part 122 which are electrically connected with each other, the strip body part 121 is arranged from the near end of the electrode layer 11 to the far end of the electrode layer 11, the outer extension part 122 extends out of the electrode layer 11, and a strength improving layer 13 is arranged on the outer extension part 122.
According to the electrode structure 10 of the electrochromic device provided by the above scheme, the conductive strip 12 is directly designed to include the strip body part 121 and the extension part 122, and an external lead structure 20 is not required to be connected to realize an electrical connection relationship. On the one hand, the structure is simplified, and on the other hand, the interface resistance is reduced. Since the extension 122 for external circuit is directly part of the conductive strip 12, there are cases where the mechanical strength is low relative to the externally connected lead structure 20. Based on this, the strength improvement layer 13 is further arranged on the extension portion 122, so that the extension portion 122 is protected, and bending or/and breaking and the like in the assembling or transporting process can be avoided.
Specifically, in some embodiments, the tape body portion 121 and the outer extension portion 122 maintain consistent or substantially comparable mechanical strength properties. Generally, the thickness of the belt body 121 is small, the bending resistance is poor, the mechanical strength of the extension portion 122 is consistent with that of the extension portion, and the strength increasing layer 13 may be additionally provided to increase the mechanical strength of the portion of the extension portion 122.
More specifically, in some embodiments, the belt body portion 121 and the extension portion 122 may be made of the same material, but not limited thereto, and may also be made of different materials. The cross-sectional area of the conductive strip 12 may be uniformly equal or gradually increased. Optionally, the conductive strip 12 is made of a uniform material and has uniform continuity, and the conductive strip 12 is processed into a pattern including the strip body portion 121 and the extension portion 122, so that when the strip body portion 121 is connected to the electrode layer 11, the extension portion 122 extends out of the electrode layer 11.
The conductive strip 12 may be a metal foil tape. Specifically, the conductive tape 12 may be a copper foil tape, an aluminum foil tape, or a tin-plated copper foil tape.
Further, in some embodiments, as shown in fig. 3 to 12, at least a portion of the strength-enhancing layer 13 and the electrode layer 11 are located on the same side of the conductive strip 12;
and/or at least part of the strength-improving layer 13 and the electrode layer 11 are located on opposite sides of the conductive strip 12.
In particular, as shown in fig. 3 and 4, in some embodiments, all of the strength-enhancing layers 13 are located on the same side of the conductive strip 12 as the electrode layer 11.
Alternatively, in other embodiments, as shown in fig. 5 and 6, all of the strength-enhancing layers 13 are located on the opposite side of the conductive strips 12 from the electrode layers 11.
Still alternatively, in still other embodiments, as shown in fig. 7 and 8, a part of the strength-increasing layers 13 are located on the same side of the conductive tape 12 as the electrode layer 11, and another part of the strength-increasing layers 13 are located on the opposite side of the conductive tape 12 from the electrode layer 11.
Further specifically, the portion of the strength-increasing layer 13 on the same side as the electrode layer 11 is a strength-increasing layer a. The portion of the strength-increasing layer 13 located on the opposite side from the electrode layer 11 is a strength-increasing layer B.
Further, in some embodiments, as shown in fig. 3 to fig. 6, when the strength-enhancing layer 13 is disposed on a single surface of the outer extension portion 122, other surfaces of the outer extension portion 122 are exposed, and may be used as electrical connection points of an external circuit.
Alternatively, in other embodiments, as shown in fig. 7 and 8, when the strength-increasing layer 13 is provided on both the upper and lower surfaces of the outer extension portion 122, the strength-increasing layer 13 may be designed such that at least a portion of the outer extension portion 122 can be exposed. Thereby utilizing the exposed portion of the outer extension 122 as an electrical connection point.
Further, in one embodiment, the strength-enhancing layer 13 is an insulating layer. The epitaxial portion 122 is at least partially exposed outside the strength-enhancing layer 13. The insulating layer can insulate and protect the extension portion 122, and the exposed position of the extension portion 122 serves as an electrical connection point.
It should be noted that the strength-enhancing layer 13 may be a structural layer, a portion of which can be removed by heat fusion or other methods, and the strength-enhancing layer 13 may completely cover the outer extension portion 122 before the electrode structure 10 is assembled for use. When the strength-improving layer is assembled and used, a part of the structure of the strength-improving layer 13 is removed by hot melting or other methods as required, so that the outer extension portion 122 is partially exposed and is electrically connected with an external circuit.
Alternatively, in other embodiments, the strength-enhancing layer 13 includes a conductive portion. The conductive portion is electrically connected to the extension portion 122, and the conductive portion extends to a surface of the strength improvement layer 13 that is not in contact with the extension portion 122. Therefore, the strength-increasing layer 13 not only increases the mechanical strength of the portion of the extension portion 122, but also can achieve an electrical connection relationship with an external circuit through the conductive portion.
Still alternatively, in other embodiments, the strength-enhancing layer 13 includes conductive particles therein. The strength-enhancing layer 13 has a certain conductivity, so that the extension portion 122 can be electrically connected to an external circuit.
Further, in one embodiment, the peel strength between the strength-enhancing layer 13 and the extension portion 122 is not less than 0.02N/mm, so as to ensure that the strength-enhancing layer 13 can be reliably connected to the extension portion 122 for protection.
Further, in some embodiments, as shown in fig. 9-12, the strength-enhancing layer 13 extends beyond the outer extension 122.
Specifically, in some embodiments, the strength-enhancing layer 13 extends beyond the outer extension 122 by no more than 3 mm. Therefore, the strength improvement layer 13 can protect the extension portion 122 more completely, and simultaneously control the material cost.
More specifically, in one embodiment, as shown in fig. 3, 4, 9 and 10, the electrode layer 11 has a thickness H, and the strength-increasing layer a has a thickness of not more than 2 × H.
In other words, when the strength-increasing layer 13 and the electrode layer 11 are located on the same side of the conductive tape 12, the thickness of the strength-increasing layer 13 cannot be too thick so as not to affect subsequent mounting. In particular, when the electrochromic device is used in laminated glass, the electrode structure 10 is at least partially sandwiched between the two glasses, which would be damaged if the strength-enhancing layer 13 were too thick.
Similarly, in one embodiment, as shown in fig. 11 and 12, at least one of the side of the conductive tape 12 on the electrode layer 11 and the side of the conductive tape 12 facing away from the electrode layer 11 is further provided with a functional layer 14. The thickness of the strength-enhancing layer B is not greater than the height of the functional layer 14 protruding from the conductive strip 12.
Further, in one embodiment, as shown in fig. 9 and 10, the strength-enhancing layer a partially covers the electrode layer 11. And the strength-increasing layer a covers the electrode layer 11 to a depth of not more than 3 mm.
The strength-increasing layer a covers the electrode layer 11, can indirectly connect the electrode layer 11 and the extension portion 122, further defines the relative position of the extension portion 122 and the electrode layer 11, and protects the extension portion 122. Here, the depth is a depth L of the strength-increasing layer 13 extending to the electrode layer 11 as shown in fig. 9.
Further, in some embodiments, the thickness of the portion of the strength-enhancing layer a that overlies the electrode layer 11 is not greater than the thickness H of the electrode layer 11.
Further, as shown in fig. 11 and 12, in an embodiment, at least one of a side of the electrode layer 11 on which the conductive tape 12 is disposed and a side of the conductive tape 12 facing away from the electrode layer 11 is further provided with a functional layer 14. The strength-enhancing layer B is bonded to the functional layer 14.
The strength-enhancing layer B is bonded to the functional layer 14, indirectly connecting the extension 122 to the functional layer 14.
Further, in one embodiment, the strength-enhancing layer 13 comprises a polymer matrix, thereby providing the strength-enhancing layer 13 with greater strength and toughness.
Specifically, the strength-improving layer 13 contains a thermosetting or thermoplastic type polymer. For example, the polymer may be a polyacrylic, epoxy, polyurethane, polyether, or polyethylene terephthalate.
When the electrode structure 10 is used in laminated glass, the glass transition temperature of the strength-increasing layer 13 is not lower than 140 ℃ in order to accommodate the process of producing laminated glass.
Further, in some embodiments, the strength-enhancing layer 13 comprises a self-healing material layer, which has self-healing capabilities, further enhancing durability. The strength-improving layer 13 can be automatically repaired when minute abrasion or breakage occurs by van der waals force, hydrogen bond, dynamic covalent bond, or the like between the material molecules.
Specifically, in some embodiments, the repair duration is no greater than 90 s.
Further, in one embodiment, a method for preparing an electrode structure of an electrochromic device is provided, which is characterized by comprising the following steps:
processing the conductive tape into a shape including a tape body portion and an extension portion electrically connected to each other;
arranging the ribbon body portion in a proximal to distal direction of the electrode layer and ensuring that the epitaxial portion extends outside the electrode layer;
a strength-enhancing layer is provided on the epitaxial portion.
The conductive tape 12 is directly processed into a shape including the tape body portion 121 and the extension portion 122, then the tape body portion 121 is disposed on the electrode layer 11 such that the extension portion 122 extends outside the electrode layer 11 for external circuit, and then the strength-improving layer 13 is disposed on the extension portion 122. The electrode structure 10 thus prepared has the characteristics of simple structure, reduced interface resistance and strength meeting the requirements of an external circuit.
In the embodiments shown in fig. 3 to 12, the conductive tape 12 has a strip shape, and when the conductive tape 12 is disposed on the electrode layer 11, a portion of the conductive tape 12 is extended out of the electrode layer 11. The portion disposed on the electrode layer 11 is the strip body portion 121, and the portion extending out of the electrode layer 11 is the extension portion 122.
Specifically, the conductive tape 12 may be cut, laser etched, stamped, sprayed, etc. into the above-described shape.
In particular, in some embodiments, the step of processing the conductive strip into a shape comprising a strip body portion and an outer extension portion electrically connected to each other specifically comprises:
the manufacturing method comprises the following steps of cutting a conductive strip into strips, wherein the conductive strip is divided into a strip body part and an extending part in the length direction of the conductive strip.
Preferably, the length of the strip is greater than the length of the electrode layer.
Further, the strength-enhancing layer 13 may be disposed on the extension portion 122 by coating during the manufacturing process. The strength-increasing layer material is pre-coated on the extension portion 122 before being cured, and the strength-increasing layer 13 is formed after being cured.
Specifically, the conductive band 12 may be placed on a platform such as a teflon plate, the raw material in a flowing state may be coated on the conductive band 12, the raw material may flow to cover the extension portion 122, and the strength-improving layer 13 covering the extension portion 122 may be formed after the raw material is solidified.
Further, it is preferable that the raw material having a slightly low viscosity is disposed on the extension portion 122 by spraying, and the raw material having a relatively high viscosity is disposed on the extension portion 122 by doctor blade coating.
Alternatively, in other embodiments, the strength-enhancing layer 13 may be an already formed solid structure that may be thermally pressed or otherwise secured to the outer extension 122.
Further, in some embodiments, the strength-enhancing layer 13 is a flat membrane.
Optionally, in other embodiments, the strength-improving layer 13 is a hollow structure layer, or the strength-improving layer 13 is a spinning structure layer. When other structures need to be adhered subsequently, the strength improvement layer 13 preferably adopts a hollow structure or a spinning structure, so that the adhesive strength of the adhesive can be increased.
Further, in one embodiment, the electrode layer 11 includes a transparent conductive layer and a transparent substrate, and the transparent substrate and the strip body portion 121 are respectively located at two sides of the transparent conductive layer. The color change and transparency change of the electrochromic layer can be observed through the electrode layer 11.
Further, in a further embodiment, there is provided an electrochromic device comprising an electrochromic layer and the electrode structure 10 of the electrochromic device described in any of the above embodiments, the electrode layer 11 of the electrode structure 10 being laminated on the electrochromic layer.
According to the electrochromic device provided by the scheme, by adopting the electrode structure 10 of the electrochromic device in any embodiment, the structure can be simplified, the interface resistance can be reduced, and the mechanical strength of an external power supply can be ensured.
In yet another embodiment, a glass assembly is provided comprising a first glass, a second glass, and the electrochromic device described above, the electrochromic device being sandwiched between the first glass and the second glass.
According to the glass assembly provided by the scheme, the electrochromic device in any one of the embodiments is arranged between the first glass and the second glass, so that the structure can be simplified, the interface resistance can be reduced, and the mechanical strength of an external circuit position can be guaranteed.
Further, still another embodiment provides a vehicle including the glass assembly described above.
The vehicle provided by the scheme is provided with the glass assembly, so that the color or transparency of the glass can be adjusted according to needs. Moreover, the electrochromic device in the glass assembly is the electrochromic device in the embodiment, so that the glass assembly has the advantages of simplified structure and reduced interface resistance, and the mechanical strength of the external circuit position is guaranteed.
In the description of the present invention, it is to be understood that the terms "length", "width", "thickness", "inner", "outer", and the like, indicate orientations or positional relationships based on those 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.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" 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.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (14)
1. An electrode structure of an electrochromic device, comprising:
an electrode layer for laminating on the electrochromic layer;
the conductive band, the conductive band includes mutual electric connection's area somatic part and epitaxial portion, take somatic part from the proximal end of electrode layer arranges to the distal end of electrode layer, the epitaxial portion extends to outside the electrode layer, be equipped with intensity lifting layer on the epitaxial portion.
2. The electrode structure of an electrochromic device according to claim 1, characterized in that at least part of said intensity-enhancing layer and said electrode layer are located on the same side of said conductive strip;
and/or at least part of the strength-enhancing layer and the electrode layer are located on opposite sides of the conductive strip.
3. The electrode structure of an electrochromic device according to claim 1, characterized in that a peel strength between the strength-elevating layer and the epitaxial portion is not less than 0.02N/mm;
and/or the strength promoting layer extends to the outside of the extension part, and the extension length of the strength promoting layer extending to the outside of the extension part is not more than 3 mm.
4. The electrode structure of electrochromic device according to claim 1, wherein said electrode layer has a thickness H, at least a portion of said strength-enhancing layer and said electrode layer are located on the same side of said conductive tape, and said portion of said strength-enhancing layer on the same side as said electrode layer is a strength-enhancing layer a, said strength-enhancing layer a having a thickness of not more than 2 × H.
5. The electrode structure of electrochromic device according to claim 1, wherein at least a part of said strength-enhancing layer and said electrode layer are located on the same side of said conductive tape, and the part of said strength-enhancing layer located on the same side as said electrode layer is a strength-enhancing layer a, said strength-enhancing layer a partially covering said electrode layer, and said strength-enhancing layer a covering said electrode layer to a depth of not more than 3 mm.
6. The electrode structure of claim 1, wherein at least one of a side of the electrode layer on which the conductive tape is disposed and a side of the conductive tape opposite to the electrode layer is further disposed with a functional layer, at least a portion of the strength-enhancing layer and the electrode layer are located on opposite sides of the conductive tape, and the portion of the strength-enhancing layer located on the opposite side of the electrode layer is a strength-enhancing layer B, and the thickness of the strength-enhancing layer B is not greater than the height of the functional layer protruding from the conductive tape, and/or the strength-enhancing layer B is bonded to the functional layer.
7. The electrode structure of an electrochromic device according to claim 1, characterized in that the strength-enhancing layer is an insulating layer, the epitaxial portion being at least partially exposed outside the strength-enhancing layer;
or the strength improving layer comprises a conductive part, the conductive part is electrically connected with the epitaxial part, and the conductive part extends to the surface of the strength improving layer, which is not contacted with the epitaxial part;
alternatively, the strength-enhancing layer contains conductive particles.
8. The electrode structure of the electrochromic device according to claim 1, wherein the strength-enhancing layer is a flat membrane, or the strength-enhancing layer is a hollow structure layer, or the strength-enhancing layer is a spun structure layer.
9. The electrode structure of an electrochromic device according to any one of claims 1 to 8, characterized in that the electrode layer comprises a transparent conductive layer and a transparent substrate, the transparent substrate and the ribbon body portion being located on both sides of the transparent conductive layer, respectively;
and/or the belt body part and the extension part have consistent mechanical strength performance;
and/or, the strength-enhancing layer comprises a layer of self-healing material.
10. An electrochromic device, comprising an electrochromic layer and an electrode structure of the electrochromic device described in any of the above embodiments, wherein the electrode layer of the electrode structure is laminated on the electrochromic layer.
11. A glass assembly comprising a first glass, a second glass, and the electrochromic device of claim 10, the electrochromic device being sandwiched between the first glass and the second glass.
12. A vehicle comprising the glass assembly of claim 11.
13. The preparation method of the electrode structure of the electrochromic device is characterized by comprising the following steps of:
processing the conductive tape into a shape including a tape body portion and an extension portion electrically connected to each other;
arranging the ribbon body portion in a proximal to distal direction of the electrode layer and ensuring that the epitaxial portion extends outside the electrode layer;
a strength-enhancing layer is provided on the epitaxial portion.
14. The method for preparing an electrode structure of an electrochromic device according to claim 13,
the step of processing the conductive strip into a shape including a strip body portion and an extension portion electrically connected to each other specifically includes:
cutting a conductive strip into strips, wherein the conductive strip is divided into a strip body part and an extension part in the length direction of the conductive strip;
and/or the step of providing a strength-enhancing layer on the epitaxial portion specifically comprises:
and coating the strength enhancement layer stock solution on the extension part, and curing to form the strength enhancement layer.
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| CN202210093908.6A CN114442395B (en) | 2022-01-26 | 2022-01-26 | Electrochromic device, electrode structure and preparation method thereof, glass assembly and vehicle |
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| CN202210093908.6A CN114442395B (en) | 2022-01-26 | 2022-01-26 | Electrochromic device, electrode structure and preparation method thereof, glass assembly and vehicle |
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| CN114442395B CN114442395B (en) | 2023-05-16 |
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| US20030042045A1 (en) * | 2001-08-28 | 2003-03-06 | Koskenmaki David C. | Embedded electrical traces and method for making |
| WO2005076061A1 (en) * | 2004-02-05 | 2005-08-18 | Saint-Gobain Glass France | Transparent window panel with a field of view that can be partially darkened and method of controlling a surface element that can be electrochromically lightened inside a transparent window panel |
| CN104880885A (en) * | 2015-04-30 | 2015-09-02 | 上方能源技术(杭州)有限公司 | Drive mode of electrochromic glass |
| JP2017194536A (en) * | 2016-04-19 | 2017-10-26 | 株式会社カネカ | Dimming element, dimming device, and method for manufacturing dimming element |
| CN108873547A (en) * | 2018-07-03 | 2018-11-23 | Oppo广东移动通信有限公司 | Electrochromic device, shell, electronic equipment |
| CN110703530A (en) * | 2019-10-30 | 2020-01-17 | 福耀玻璃工业集团股份有限公司 | Electrochromic automobile glass with electric heating and electromagnetic shielding functions |
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|---|---|---|---|---|
| US4375319A (en) * | 1976-09-14 | 1983-03-01 | Sharp Kabushiki Kaisha | Electrochromic display device |
| US20030042045A1 (en) * | 2001-08-28 | 2003-03-06 | Koskenmaki David C. | Embedded electrical traces and method for making |
| WO2005076061A1 (en) * | 2004-02-05 | 2005-08-18 | Saint-Gobain Glass France | Transparent window panel with a field of view that can be partially darkened and method of controlling a surface element that can be electrochromically lightened inside a transparent window panel |
| CN104880885A (en) * | 2015-04-30 | 2015-09-02 | 上方能源技术(杭州)有限公司 | Drive mode of electrochromic glass |
| JP2017194536A (en) * | 2016-04-19 | 2017-10-26 | 株式会社カネカ | Dimming element, dimming device, and method for manufacturing dimming element |
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| CN114442395B (en) | 2023-05-16 |
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