Electrochromic diaphragm, electrochromic device and terminal product

Abstract

The utility model provides an electrochromic diaphragm, an electrochromic device and a terminal product. The electrochromic membrane comprises a heating layer, a conductive substrate layer and an electrochromic layer which are sequentially stacked, the conductive substrate layer is electrically connected with an electrode, and the electrode and a leading-out electrode of the heating layer are arranged in an insulated mode. When the electrochromic membrane, the electrochromic device or the terminal product provided by the utility model is used in a low-temperature environment, and the leading-out electrode of the heating layer is electrified, the heating layer converts electric energy into internal energy to heat the whole electrochromic membrane, so that the electrochromic membrane can be quickly discolored. In addition, the leading-out electrodes and the electrodes are arranged in an insulated mode, that is, the conductive substrate layer and the heating layer are independently controlled, and the effect of flexible adjustment is achieved. In addition, the current introduced into the leading-out electrode can be prevented from directly flowing through the electrode, so that short circuit is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electrochromic technology especially relates to a kind of electrochromic diaphragm, electrochromic device and terminal product. BACKGROUND

[0002] Electrochromic device is a kind of device that can change color under the action of voltage, and the core of electrochromic device is electrochromic material, which changes their absorption characteristics to light when voltage is applied or removed, thereby changing color.

[0003] However, the color-changing speed of electrochromic device is greatly affected by the environment, and the color-changing speed of electrochromic device is relatively slow in low-temperature environment. INVENTION CONTENTS

[0004] To solve the problems in the prior art, one of the purposes of the utility model is to provide an electrochromic diaphragm.

[0005] The utility model provides the following technical scheme:

[0006] An electrochromic diaphragm includes a heating layer, a conductive substrate layer, and an electrochromic layer that are sequentially stacked, the conductive substrate layer is electrically connected to an electrode, and the electrode is insulated from the lead-out electrode of the heating layer.

[0007] As a further optional scheme for the electrochromic diaphragm, a notch is provided on the heating layer, and the electrode is exposed in the notch.

[0008] As a further optional scheme for the electrochromic diaphragm, the conductive substrate layer includes a first conductive substrate layer and a second conductive substrate layer, the first conductive substrate layer, the electrochromic layer, and the second conductive substrate layer are sequentially stacked, and the heating layer is provided on the side of the first conductive substrate layer and / or the second conductive substrate layer away from the electrochromic layer.

[0009] The electrochromic diaphragm is provided with a plurality of grooves, including at least two first grooves penetrating the first conductive substrate layer and the electrochromic layer, and at least two second grooves penetrating the second conductive substrate layer and the electrochromic layer, the first grooves and the second grooves are alternately arranged along the circumference of the electrochromic diaphragm.

[0010] The electrode includes a first bus bar and a second bus bar, the first bus bar is arranged on the side of the first conductive substrate layer away from the second conductive substrate layer, and the first bus bar extends along the circumference of the electrochromic film to contact the second conductive substrate layer at the position corresponding to the first groove, the second bus bar is arranged on the side of the second conductive substrate layer away from the first conductive substrate layer, and the second bus bar extends along the circumference of the electrochromic film to contact the first conductive substrate layer at the position corresponding to the second groove.

[0011] As a further optional scheme of the electrochromic film, the heating layer is arranged on the side of the first conductive substrate layer away from the electrochromic layer, and a first insulating layer is arranged between the heating layer and the first bus bar.

[0012] As a further optional scheme of the electrochromic film, the heating layer is arranged on the side of the first conductive substrate layer away from the electrochromic layer, and the heating layer is located in the inner periphery of the first bus bar.

[0013] As a further optional scheme of the electrochromic film, the lead-out electrode is located on the side of the first bus bar away from the first conductive substrate layer, and a second insulating layer is arranged between the lead-out electrode and the first bus bar.

[0014] As a further optional scheme of the electrochromic film, the heating layer includes a transparent substrate and a conductive grid embedded in the transparent substrate, the transparent substrate is arranged on the side of the conductive substrate layer away from the electrochromic layer, and the conductive grid is electrically connected with the lead-out electrode.

[0015] As a further optional scheme of the electrochromic film, at least one of the following features is further included:

[0016] The thickness of the conductive grid is H, and 500nm≤H≤8000nm;

[0017] The line width of the conductive grid is W, and 500nm≤W≤7000nm;

[0018] The line distance of the conductive grid is D, and 3000nm≤D≤10000nm.

[0019] Another object of the present application is to provide an electrochromic device.

[0020] The present application provides the following technical solutions:

[0021] An electrochromic device includes a substrate layer and an electrochromic film, and the substrate layer and the electrochromic film are arranged in a stack.

[0022] As a further optional solution to the electrochromic device, a shielding layer is provided on the substrate layer, the shielding layer covering at least the electrode and the lead-out electrode.

[0023] A further object of the present application is to provide a terminal product.

[0024] The present application provides the following technical scheme: a terminal product, comprising the electrochromic film or the electrochromic device, wherein the terminal product comprises any one of a rearview mirror, a curtain wall, an automobile sunroof, an automobile side window, an automobile windshield, a shell of an electronic product, glasses, and a display panel of an electronic product.

[0025] The embodiments of the present application have the following beneficial effects:

[0026] The electrochromic film, the electrochromic device, or the terminal product provided in the present application is used in a low-temperature environment, when the conductive substrate layer is powered, the electrochromic layer changes in transmittance due to the change in voltage across the two ends; when the lead-out electrode of the heating layer is powered, the heating layer converts electrical energy into internal energy, heating the entire electrochromic film, which is conducive to the rapid color change of the electrochromic film. In addition, the lead-out electrode and the electrode are insulated, that is, the conductive substrate layer and the heating layer are independently controlled, which plays a role in flexible adjustment.

[0027] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiments, it should be understood that the following drawings only show some embodiments of the present application, therefore should not be regarded as a limitation on the scope, for those skilled in the art, without creative labor, other related drawings can also be obtained from these drawings.

[0029] Figure 1 The overall structure of the electrochromic film provided by the embodiment of the present application is shown in the schematic diagram;

[0030] Figure 2 The cross-sectional schematic diagram of the single-electrode electrochromic film provided by the embodiment of the present application is shown in the schematic diagram;

[0031] Figure 3 The manufacturing flowchart of the heating layer in the electrochromic film provided by the embodiment of the present application is shown in the schematic diagram;

[0032] Figure 4A plane structure schematic view of a single-electrode electrochromic diaphragm is shown in the embodiment of the utility model;

[0033] Figure 5 A cross section schematic view of the edge part of a multi-electrode electrochromic diaphragm is shown in the embodiment of the utility model;

[0034] Figure 6 A cross section schematic view of the edge part of a multi-electrode electrochromic diaphragm is shown in the embodiment of the utility model;

[0035] Figure 7 A cross section schematic view of the edge part of a multi-electrode electrochromic diaphragm is shown in the embodiment of the utility model;

[0036] Figure 8 A cross section schematic view of the edge part of a multi-electrode electrochromic diaphragm is shown in the embodiment of the utility model;

[0037] Figure 9 A cross section schematic view of the edge part of a multi-electrode electrochromic diaphragm is shown in the embodiment of the utility model;

[0038] Figure 10 A plane structure schematic view of a multi-electrode electrochromic diaphragm is shown in the embodiment of the utility model;

[0039] Figure 11 A cross section schematic view of an electrochromic device is shown in the embodiment of the utility model;

[0040] Figure 12 A plane structure schematic view of an electrochromic device is shown in the embodiment of the utility model.

[0041] Main element symbol explanation:

[0042] 100-heating layer, 110-lead-out electrode, 111-first lead-out electrode, 112-second lead-out electrode, 120-transparent substrate, 130-conductive grid, 200-conductive substrate layer, 210-first conductive substrate layer, 220-second conductive substrate layer, 201-film substrate layer, 300-electrochromic layer, 310-electrochromic material layer, 320-electrolyte layer, 330-ion storage layer, 400-electrode, 410-first electrode, 420-second electrode, 430-first bus bar, 440-second bus bar, 500-groove, 510-first groove, 520-second groove, 600-first insulating layer, 700-second insulating layer, 800-first lead-out structure, 900-second lead-out structure, X-first direction, Y-second direction;

[0043] 10 - substrate layer; 11 - masking layer; 20 - adhesive layer. DETAILED DESCRIPTION

[0044] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like component have the same or similar designations. The embodiments described are presented by way of example only and are not intended to limit the present application as defined by the appended claims and their equivalents.

[0045] It is to be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can 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 "overlying," "atop," and "on" as used herein refer to the relative positioning of components, and does not necessarily imply any direct physical or logical contact.

[0046] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0047] In addition, the terms "first", "second", "third" and the like are used only to describe purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0048] Unless otherwise defined, 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 in the description of the template herein is only for the purpose of describing specific embodiments and is not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0049] The inventors have found that, in use, electrochromic devices suffer from slow colour change.

[0050] On the other hand, when the electrochromic device is applied to the rearview mirror, side window, windshield and other accessories of the automobile, the accessories have the need of defogging in the low temperature environment.

[0051] To solve the above problems, the electrochromic film provided by the embodiments of the present application comprises a heating layer 100, a conductive substrate layer 200 and an electrochromic layer 300 which are stacked in sequence. Figure 1 and Figure 2 The conductive substrate layer 200 is electrically connected with an electrode 400, and the electrode 400 is insulated from the lead-out electrode 110 of the heating layer 100.

[0052] When the conductive substrate layer 200 is powered in the low temperature environment, the electrochromic layer 300 changes the transmittance under the change of the voltage between two ends. The lead-out electrode 110 of the heating layer 100 is powered, and the heating layer 100 converts the electric energy into internal energy to heat the whole electrochromic film, which is conducive to the rapid color change of the electrochromic film. In addition, the lead-out electrode 110 and the electrode 400 are insulated, that is, the conductive substrate layer 200 and the heating layer 100 are independently controlled, which plays a role of flexible adjustment. In addition, the current flowing through the lead-out electrode 110 can be prevented from directly flowing through the electrode 400, and the circuit design is simple.

[0053] Please refer to Figure 2 and Figure 3 Specifically, the conductive substrate layer 200 is composed of a film substrate layer 201 and a conductive layer, and the heating layer 100, the film substrate layer 201, the conductive layer and the electrochromic layer 300 are stacked in sequence.

[0054] The material of the film substrate layer 201 is PET (polyethylene terephthalate) or PC (polycarbonate), and the material of the conductive layer can be ITO (indium tin oxide).

[0055] In some embodiments, the heating layer 100 comprises a transparent substrate 120 and a conductive grid 130 embedded in the transparent substrate 120.

[0056] The transparent substrate 120 is arranged on the side of the conductive substrate layer 200 away from the electrochromic layer 300, specifically on the side of the film substrate layer 201 away from the conductive layer. In addition, the conductive grid 130 is electrically connected with the lead-out electrode 110.

[0057] After the lead-out electrode 110 is powered, the current flows through the conductive grid 130. Since the conductive grid 130 has a certain resistance, the conductive grid 130 can convert the electric energy into internal energy to heat the whole electrochromic film.

[0058] In addition, the conductive grid 130 also has the advantage of high light transmittance, and has less impact on the visual aesthetics of the product itself. Exemplarily, the material of the transparent substrate 120 is resin. The conductive grid 130 is of metal material, including but not limited to silver, gold, copper, etc.

[0059] When the heating layer 100 is made, the resin is first coated on the surface of the film substrate layer 201 to form the transparent substrate 120. Then, the resin surface is grooved by using a mold, and then the metal conductive paste is printed and solidified to form the conductive grid 130.

[0060] It can be understood that the transparent substrate 120 is further coated with ITO film or FTO film or organic conductive material for the purpose of protecting the conductive grid 130 or adjusting the color of the entire film.

[0061] Further, the thickness H of the conductive grid 130 satisfies 500nm≤H≤8000nm.

[0062] If the conductive grid 130 is too thick, the light transmittance of the corresponding heating layer 100 is low, which affects the transmittance of the entire film and further affects the visual effect. Moreover, if the conductive grid 130 is too thick, the resistance of the corresponding conductive grid 130 is small, and the heating speed of the overall heating layer is slow, which cannot meet the heating requirements of the device. If the conductive grid 130 is too thin, the resistance is too large, and the heating speed will be too fast, which affects the use of the device.

[0063] Optionally, the thickness of the conductive grid 130 can be 500nm, 1000nm, 1500nm, 2000nm, 2500nm, 3000nm, 3500nm, 4000nm, 4500nm, 5000nm, 5500nm, 6000nm, 6500nm, 7000nm, 7500nm, 8000nm or any value between 500nm and 8000nm.

[0064] Further, the line width W of the conductive grid 130 satisfies 500nm≤W≤7000nm.

[0065] If the line width of the conductive grid 130 is too large, the light transmittance of the corresponding heating layer 100 is low, which affects the transmittance of the entire film and further affects the visual effect. Moreover, if the line width is too large, the resistance of the corresponding conductive grid 130 is small, and the heating speed of the overall heating layer is slow, which cannot meet the heating requirements of the device. If the line width of the conductive grid 130 is too small, the resistance is too large, and the heating speed will be too fast, which affects the use of the device.

[0066] Optionally, the line width of the conductive grid 130 can be 500 nm, 1000 nm, 1500 nm, 2000 nm, 2500 nm, 3000 nm, 3500 nm, 4000 nm, 4500 nm, 5000 nm, 5500 nm, 6000 nm, 6500 nm, 7000 nm, or any value between 500 nm and 7000 nm.

[0067] Further, the line distance of the conductive grid 130 is D, which satisfies 3000 nm≤D≤10000 nm.

[0068] If the line distance of the conductive grid 130 is too small, the light transmittance of the corresponding heating layer 100 is low, which affects the transmittance of the entire film and further affects the visual effect. Moreover, if the line distance is too small, the resistance of the corresponding conductive grid 130 is small, and the heating speed of the overall heating layer is slow, which cannot meet the heating requirements of the device. If the line distance of the conductive grid 130 is too large, the resistance is too large, and the heating speed will be too fast, which affects the use of the device.

[0069] Optionally, the line distance of the conductive grid 130 can be 3000 nm, 4000 nm, 5000 nm, 6000 nm, 7000 nm, 8000 nm, 9000 nm, 10000 nm, or any value between 3000 nm and 10000 nm.

[0070] Specifically, please refer to Figure 5 The electrochromic layer 300 is composed of an electrochromic material layer 310, an electrolyte layer 320, and an ion storage layer 330 which are sequentially stacked.

[0071] Please refer to Figure 2 and Figure 4 In some embodiments, the above-mentioned electrochromic film adopts a single electrode structure. At this time, the heating layer 100 is provided with a notch, and the electrode 400 is exposed in the notch. In addition, the electrochromic film further includes a first lead-out structure 800 and a second lead-out structure 900 (please refer to Figure 12 The first lead-out structure 800 is electrically connected with the electrode 400 and an external power supply, respectively, and the second lead-out structure 900 is electrically connected with the lead-out electrode 110 and the external power supply, respectively.

[0072] Specifically, the conductive substrate layer 200 includes a first conductive substrate layer 210 and a second conductive substrate layer 220, and the first conductive substrate layer 210, the electrochromic material layer 310, the electrolyte layer 320, the ion storage layer 330, and the second conductive substrate layer 220 are sequentially stacked.

[0073] Correspondingly, the electrode 400 includes a first electrode 410 and a second electrode 420 as the positive electrode and the negative electrode of the whole electrochromic diaphragm respectively. The first electrode 410 is connected to the inner side of the first conductive substrate layer 210, i.e. the side of the first conductive substrate layer 210 facing the electrochromic material layer 310. The second electrode 420 is connected to the inner side of the second conductive substrate layer 220, i.e. the side of the second conductive substrate layer 220 facing the ion storage layer 330. The electrode 400 can be a bare conductive layer or a metal such as silver wire coated on the conductive layer, and the electrode 400 is arranged in the circumferential direction of the electrochromic diaphragm and extends along the circumferential direction to cover the whole circumferential edge.

[0074] It can be understood that the side of the first conductive substrate layer 210 away from the electrochromic layer 300 and the side of the second conductive substrate layer 220 away from the electrochromic layer 300 can both be provided with the heating layer 100. Alternatively, only the side of the first conductive substrate layer 210 away from the electrochromic layer 300 is provided with the heating layer 100. Alternatively, only the side of the second conductive substrate layer 220 away from the electrochromic layer 300 is provided with the heating layer 100.

[0075] The present embodiment is not limited in this regard, and the case where only the side of the first conductive substrate layer 210 away from the electrochromic layer 300 is provided with the heating layer 100 is taken as an example for description.

[0076] Specifically, the lead-out electrode 110 of the heating layer 100 includes a first lead-out electrode 111 and a second lead-out electrode 112 as the positive electrode and the negative electrode of the circuit where the heating layer 100 is located respectively, and is electrically connected to the positive electrode and the negative electrode of the power supply respectively. The first lead-out electrode 111 and the second lead-out electrode 112 are located on the side of the heating layer 100 away from the first conductive substrate layer 210, and are arranged at two opposite end portions of the heating layer 100 respectively, so that the current flowing in from the first lead-out electrode 111 and the current flowing out from the second lead-out electrode 112 flow through the whole conductive mesh 130.

[0077] On this basis, for a square electrochromic diaphragm, the extension directions of the two mutually perpendicular sides are denoted as a first direction X and a second direction Y respectively. The first electrode 410 and the second electrode 420 are arranged at one end of the electrochromic diaphragm along the first direction X and are arranged at intervals in the second direction Y, and the first lead-out electrode 111 and the second lead-out electrode 112 are arranged at the two ends of the electrochromic diaphragm in the second direction Y respectively, so that the lead-out electrode 110 and the electrode 400 are spatially separated and staggered, thereby facilitating the wiring of the lead-out electrode 110 and the electrode 400 respectively.

[0078] Alternatively, the first lead-out electrode 111 and the second lead-out electrode 112 are both in the shape of a long strip of copper foil, and the first lead-out electrode 111 and the second lead-out electrode 112 both extend along one side edge and cover the corresponding side edge of the heating layer 100 respectively.

[0079] Please refer toFigure 5 In some other embodiments, the electrochromic film has a multi-electrode structure.

[0080] Specifically, the conductive substrate layer 200 includes a first conductive substrate layer 210 and a second conductive substrate layer 220, and the first conductive substrate layer 210, the electrochromic layer 300 and the second conductive substrate layer 220 are sequentially stacked. The heating layer 100 is arranged on the side of the first conductive substrate layer 210 and / or the second conductive substrate layer 220 away from the electrochromic layer 300.

[0081] In addition, the electrochromic film is provided with a plurality of grooves 500. The grooves 500 include at least two first grooves 510 penetrating the first conductive substrate layer 210 and the electrochromic layer 300, and at least two second grooves 520 penetrating the second conductive substrate layer 220 and the electrochromic layer 300, and the first grooves 510 and the second grooves 520 are alternately arranged along the circumference of the electrochromic film. The multi-electrode structure used in the electrochromic film of the present embodiment can accelerate the color changing speed of the electrochromic device, especially in large-area devices such as curtain walls, automobile canopies, etc. It can efficiently and quickly improve the color changing speed. In addition, the large-area electrochromic device needs to be heated by the heating layer to ensure the normal operation of the device.

[0082] Correspondingly, the electrode 400 includes a first bus bar 430 and a second bus bar 440. The first bus bar 430 is arranged on the side of the first conductive substrate layer 210 away from the second conductive substrate layer 220, and the first bus bar 430 extends to the conductive layer of the second conductive substrate layer 220 corresponding to at least two first grooves 510 along the circumference of the electrochromic film. The second bus bar 440 is arranged on the side of the second conductive substrate layer 220 away from the first conductive substrate layer 210, and the second bus bar 440 extends to the conductive layer of the first conductive substrate layer 210 corresponding to at least two second grooves 520 along the circumference of the electrochromic film.

[0083] It can be understood that the side of the first conductive substrate layer 210 away from the electrochromic layer 300 and the side of the second conductive substrate layer 220 away from the electrochromic layer 300 can be provided with the heating layer 100. Alternatively, the heating layer 100 is arranged only on the side of the first conductive substrate layer 210 away from the electrochromic layer 300. Alternatively, the heating layer 100 is arranged only on the side of the second conductive substrate layer 220 away from the electrochromic layer 300.

[0084] In the present embodiment, the heating layer 100 is arranged only on the side of the first conductive substrate layer 210 away from the electrochromic layer 300.

[0085] Please refer to Figure 5 and Figure 6In some embodiments, the distribution range of the heating layer 100 is consistent with the first conductive substrate layer 210. Accordingly, the first groove 510 penetrates the heating layer 100, the first conductive substrate layer 210 and the electrochromic layer 300.

[0086] At this time, the first bus bar 430 covers the edge portion of the heating layer 100. To avoid the first bus bar 430 from being in contact with the conductive grid 130 in the heating layer 100, the first insulating layer 600 is arranged between the heating layer 100 and the first bus bar 430, so as to insulate the first bus bar 430 from the heating layer 100, and prevent the current from being transmitted between the conductive layer and the heating layer.

[0087] The electrochromic film is prepared by first forming the first groove 510 at the edge of the film, the first groove 510 penetrating the heating layer 100, the first conductive substrate layer 210, the electrochromic layer 300 and the second conductive substrate layer 220, then pasting the first insulating layer 600 on the heating layer 100 between the adjacent two first grooves 510, and finally laying the first bus bar 430.

[0088] It can be understood that the length of the first insulating layer 600 is slightly greater than the distance between the adjacent two first grooves 510. After the first insulating layer 600 is pasted on the heating layer 100 between the adjacent two first grooves 510, a certain amount of excess is left at both ends of the first insulating layer 600. In the process of laying the first bus bar 430, the first bus bar 430 presses the excess part of the first insulating layer 600 into the first groove 510, thereby insulating and isolating the section of the heating layer 100.

[0089] Please refer to Figure 7 , Figure 8 and Figure 9 In other embodiments, the distribution range of the heating layer 100 is smaller than the first conductive substrate layer 210, specifically, the heating layer is located in the inner range of the first bus bar 430, and in the projection of the electrochromic layer in the plane, the heating layer is inwardly retracted relative to the first bus bar. At this time, the first bus bar 430 does not cover the edge portion of the heating layer 100, and thus the first insulating layer 600 is not required.

[0090] Please refer to Figure 6 , Figure 9 and Figure 10 Further, the lead-out pole 110 is located on the side of the first bus bar 430 away from the first conductive substrate layer 210, and the second insulating layer 700 is arranged between the lead-out pole 110 and the first bus bar 430.

[0091] The second insulation layer 700 electrically isolates the lead-out electrode 110 and the first bus bar 430, avoids the lead-out electrode 110 from being in electrical conduction with the first bus bar 430, and further avoids the current of the conductive grid 130 from contacting the first bus bar 430. The voltage required by the conductive grid and the electrochromic layer can be different, and the input time can also be different. Therefore, the two are insulated and controlled separately, so as to ensure the normal power supply of the heating layer 100 and the conductive substrate.

[0092] Optionally, two long strip-shaped copper foils are arranged on the side of the heating layer 100 away from the first conductive substrate layer 210. The two copper foils serve as current collectors, i.e., bus bars, and are connected with the two lead-out electrodes 110 respectively, and the copper foils are located in the inner periphery of the first bus bar 430.

[0093] In summary, the above-mentioned electrochromic film adjusts the structure, adds the conductive grid 130 as the heating layer 100 on the conductive substrate layer 200, and has both heating function and transparent characteristics. The electrochromic film can be heated in a low-temperature environment, which is conducive to the rapid color response of the electrochromic film, and can also avoid affecting the visual aesthetics and light transmittance of the product. In particular, the lead-out electrode 110 and the electrode 400 are insulated, that is, the conductive substrate layer 200 and the heating layer 100 are independently controlled, which plays a role in flexible adjustment.

[0094] Please refer to Figure 11 The embodiment also provides an electrochromic device, which comprises a substrate layer 10 and the above-mentioned electrochromic film, and the substrate layer 10 and the electrochromic film are stacked.

[0095] In some embodiments, the substrate layer 10 is arranged on both sides of the electrochromic film along the thickness direction, which forms a more comprehensive bearing and protection effect on the electrochromic film.

[0096] Optionally, the substrate layer 10 is made of glass or PC.

[0097] In some embodiments, an adhesive layer 20 is arranged between the substrate layer 10 and the electrochromic film, and the substrate layer 10 is fixed to the electrochromic film by the adhesive layer 20.

[0098] Optionally, the adhesive layer 20 is a transparent insulating glue, which can be made of PVB (Polyvinyl Butyral) or EVA (ethylene-vinyl acetate copolymer). The adhesive layer 20 can not only fix the substrate layer 10 and the electrochromic film, but also isolate oxygen and water vapor, thereby protecting the electrochromic film and prolonging the service life of the electrochromic film.

[0099] Please refer to Figure 12 In addition, the first lead-out structure 800 and the second lead-out structure 900 are both arranged in two and arranged along the circumference of the electrochromic film.

[0100] One of the first lead-out structures 800 is electrically connected to the positive pole of the external power supply and simultaneously connected to the first electrode 410 or the first bus bar 430. The other first lead-out structure 800 is electrically connected to the negative pole of the external power supply and simultaneously connected to the second electrode 420 or the second bus bar 440.

[0101] Similarly, one of the second lead-out structures 900 is respectively electrically connected to the first lead-out pole 111 and the positive pole of the external power supply, and the other second lead-out structure 900 is respectively electrically connected to the second lead-out pole 112 and the negative pole of the external power supply.

[0102] Further, the substrate layer 10 is provided with a shielding layer 11, and the shielding layer 11 covers at least the electrode 400 and the lead-out pole 110.

[0103] In use, the shielding layer 11 can shield the electrode 400 and the lead-out pole 110 to avoid affecting the visual aesthetics of the product.

[0104] Optionally, the shielding layer 11 is a black ink edge.

[0105] In the embodiment, the substrate layer 10, the adhesive layer 20, the heating layer 100, the conductive base layer 200 and the electrochromic layer 300 are sequentially stacked.

[0106] In another embodiment of the present application, the heating layer 100 can also be arranged on the substrate layer 10, specifically on the side of the substrate layer 10 facing the electrochromic film. At this time, the substrate layer 10, the adhesive layer 20, the conductive base layer 200 and the electrochromic layer 300 are sequentially stacked.

[0107] In use, the ambient environment is monitored in real time by the temperature sensor outside the substrate layer 10. When the ambient temperature is lower than -5℃, the heating is automatically started, and the device temperature can be raised to above 0℃ in a short time.

[0108] For example, assuming that the external power supply is 12V DC, if it is required to heat the automobile accessory with a size of 300mm*300mm and a single-side glass thickness of 1.5mm from -5℃ to 25℃ within 30min, the required resistance of the conductive grid 130 is calculated as follows:

[0109] Let the volume of the glass be V, the side length of the glass be a, and the thickness of the glass be h.

[0110] Given a=0.3m and h=0.0015m, V=a 2 *h=1.35*10-4 m 3 .

[0111] Let the mass of the glass be m, and the density of the glass be p.

[0112] Given p = 2.5 * 10 3 kg / m 3 , it can be calculated that m = p * V = 0.3375 kg.

[0113] Let the required heat be Q1, let the specific heat capacity of the glass be C, and let the temperature difference be AT.

[0114] Given C = 0.84 * 10 3 J / (kg·℃), and AT = 30℃, it can be calculated that Q = C * m = 8535 J.

[0115] Let the heat generated by the conductive grid 130 be Q2, let the voltage be U, let the heating time be t, and let the resistance of the conductive grid 130 be R, then:

[0116]

[0117] Given U = 12 V and t = 1800 s, it can be calculated that R ≈ 3.11 Ω. That is, on a single-sided glass with an area of 300 mm * 300 mm and a thickness of 1.5 mm, a heating wire with a resistance of 3.11 Ω needs to be set to meet the normal heating requirements of the device.

[0118] The embodiment also provides a terminal product comprising the electrochromic film or the electrochromic device, wherein the terminal product comprises any one of a rearview mirror, a curtain wall, an automobile sunroof, an automobile side window, an automobile windshield, a shell of an electronic product, glasses, and a display panel of an electronic product.

[0119] The terminal product in the embodiment of the application has all the advantages of the electrochromic film or the electrochromic device.

[0120] In particular, for the terminal product used in a low-temperature environment, the heating layer 100 arranged inside the electrochromic film or the electrochromic device can also be used to defog in extreme weather.

[0121] In all the examples shown and described herein, any specific values should be interpreted as merely exemplary and not as a limitation, and thus, other examples of the example embodiments can have different values.

[0122] It should be noted that like reference numerals and letters refer to like items in the several views, and once an item is defined in one view, it need not be further defined and explained in subsequent views.

[0123] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be pointed out that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. An electrochromic film, characterized in that: The invention comprises a heating layer, a conductive base layer and an electrochromic layer which are stacked in sequence. The conductive base layer is electrically connected to an electrode, and the electrode is insulated from the lead-out electrode of the heating layer.

2. The electrochromic film according to claim 1, characterized in that: The heating layer is provided with a notch, and the electrode is exposed in the notch.

3. The electrochromic film according to claim 1, characterized in that: The conductive substrate layer includes a first conductive substrate layer and a second conductive substrate layer, wherein the first conductive substrate layer, the electrochromic layer and the second conductive substrate layer are stacked in sequence, and the heating layer is arranged on a side of the first conductive substrate layer and / or the second conductive substrate layer away from the electrochromic layer; The electrochromic film is provided with a plurality of grooves, the grooves including at least two first grooves penetrating the first conductive base layer and the electrochromic layer and at least two second grooves penetrating the second conductive base layer and the electrochromic layer, the first grooves and the second grooves being alternately arranged along the circumference of the electrochromic film; The electrode includes a first bus bar and a second bus bar, the first bus bar is arranged on the side of the first conductive base layer facing away from the second conductive base layer, and the first bus bar extends along the circumference of the electrochromic film to contact the second conductive base layer corresponding to the first groove, and the second bus bar is arranged on the side of the second conductive base layer facing away from the first conductive base layer, and the second bus bar extends along the circumference of the electrochromic film to contact the first conductive base layer corresponding to the second groove.

4. The electrochromic film according to claim 3, characterized in that: The heating layer is arranged on a side of the first conductive base layer away from the electrochromic layer, and a first insulating layer is arranged between the heating layer and the first bus bar.

5. The electrochromic film according to claim 3, characterized in that: The heating layer is arranged on a side of the first conductive base layer away from the electrochromic layer, and the heating layer is located inside the first bus bar.

6. The electrochromic film according to claim 4 or 5, characterized in that: The lead-out electrode is located on a side of the first bus bar away from the first conductive base layer, and a second insulating layer is provided between the lead-out electrode and the first bus bar.

7. The electrochromic film according to any one of claims 1 to 5, characterized in that: The heating layer includes a transparent substrate and a conductive grid embedded in the transparent substrate. The transparent substrate is arranged on a side of the conductive substrate layer away from the electrochromic layer. The conductive grid is electrically connected to the lead-out electrode.

8. An electrochromic device, characterized in that: The invention comprises a substrate layer and the electrochromic film according to any one of claims 1 to 7, wherein the substrate layer and the electrochromic film are stacked.

9. The electrochromic device according to claim 8, characterized in that A shielding layer is provided on the substrate layer, and the shielding layer at least covers the electrode and the lead-out electrode.

10. A terminal product, characterized in that: It comprises the electrochromic film according to any one of claims 1 to 7 or the electrochromic device according to any one of claims 8 to 9, wherein the terminal product comprises any one of a rearview mirror, a curtain wall, a car sunroof, a car side window, a car windshield, an electronic product housing, glasses, and an electronic product display panel.

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