A circular electrochromic flap and electrochromic glass

Abstract

The application is suitable for the technical field of electrochromic technology, and provides a circular electrochromic diaphragm and electrochromic glass.The circular electrochromic diaphragm comprises a plurality of first electrode areas, a plurality of second electrode areas, a first bus assembly and a second bus assembly, the plurality of first electrode areas and the plurality of second electrode areas are uniformly arranged on the outer peripheral edge of the circular electrochromic diaphragm around the circumference of the circular electrochromic diaphragm, the first electrode area comprises a plurality of positive electrodes, and the second electrode area comprises a plurality of negative electrodes.The first bus assembly is connected with the plurality of positive electrodes, and the second bus assembly is connected with the plurality of negative electrodes.The plurality of positive electrodes are electrified through the first bus assembly, and the plurality of negative electrodes are electrified through the second bus assembly, so as to form an electric field between the first electrode area and the second electrode area, thereby promoting the circular electrochromic diaphragm to change color from the outer peripheral edge to the middle, and the uniformity of the color change effect is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrochromic technology, and more particularly to a circular electrochromic diaphragm and electrochromic glass. BACKGROUND

[0002] Circular glass is usually applied to automobile sunroofs, dome sunroofs or smart device screens, etc. The traditional circular glass cannot dynamically adjust the light transmittance, and it is difficult to meet the needs of users for privacy protection or intelligent control.

[0003] At present, some circular glass adopts an electrochromic diaphragm to realize an automatic color changing function. By connecting the edge area on one side of the electrochromic diaphragm to a power supply, the electrochromic diaphragm changes color from the edge area on one side to the edge area on the other side under the condition of applying an electric field to the electrochromic diaphragm. The uniformity of the color changing effect of this kind of circular electrochromic diaphragm is poor, which easily leads to unstable light transmittance adjustment effect. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the embodiments of the present application is to provide a circular electrochromic diaphragm and electrochromic glass, aiming to solve the technical problem of poor color changing uniformity of the electrochromic diaphragm applied to the circular glass in the prior art.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is:

[0006] In a first aspect, the present application provides a circular electrochromic diaphragm, comprising:

[0007] A plurality of first electrode areas are located at the outer peripheral edge of the circular electrochromic diaphragm, and the plurality of first electrode areas are uniformly arranged around the circumference of the circular electrochromic diaphragm. The first electrode area includes a plurality of positive electrodes.

[0008] A plurality of second electrode areas are located at the outer peripheral edge of the circular electrochromic diaphragm, and the plurality of second electrode areas are uniformly arranged around the circumference of the circular electrochromic diaphragm. The second electrode area includes a plurality of negative electrodes.

[0009] A first bus assembly is connected to the plurality of positive electrodes.

[0010] A second bus assembly is connected to the plurality of negative electrodes.

[0011] In a possible design, the first bus assembly includes a plurality of first bus bars, the first bus bars are arranged one-to-one corresponding to the first electrode areas, and the first bus bars are connected to the plurality of positive electrodes in the corresponding first electrode areas.

[0012] The second bus assembly includes a plurality of second bus bars, the second bus bars are arranged one-to-one corresponding to the second electrode areas, and the second bus bars are connected to the plurality of negative electrodes in the corresponding second electrode areas.

[0013] In a possible design, each first bus bar is connected with a first lead-out electrode, and each second bus bar is connected with a second lead-out electrode.

[0014] In a possible design, among the plurality of first bus bars, any two adjacent first bus bars are connected.

[0015] Any two adjacent first bus bars are overlapped, and one of the first bus bars is connected with a first lead-out electrode; or

[0016] The first bus assembly further comprises one or more first intermediate bus bars, and each first intermediate bus bar connects two adjacent first bus bars, and one of the first bus bars or one of the first intermediate bus bars is connected with a first lead-out electrode.

[0017] And / or,

[0018] In a possible design, among the plurality of second bus bars, any two adjacent second bus bars are connected.

[0019] Any two adjacent second bus bars are overlapped, and one of the second bus bars is connected with a second lead-out electrode; or

[0020] The second bus assembly further comprises one or more second intermediate bus bars, and each second intermediate bus bar connects two adjacent second bus bars, and one of the second bus bars or one of the second intermediate bus bars is connected with a second lead-out electrode.

[0021] In a possible design, along the circumferential direction of the circular electrochromic film, the positive electrodes and the negative electrodes are staggered.

[0022] In a possible design, the number of the first electrode regions is equal to the number of the second electrode regions.

[0023] And / or,

[0024] The number of the positive electrodes in each first electrode region is equal, and the number of the negative electrodes in each second electrode region is equal.

[0025] In a possible design, the circular electrochromic film comprises a first substrate layer, a first conductive layer, an electrochromic layer, a second conductive layer and a second substrate layer which are sequentially stacked.

[0026] The circular electrochromic film is provided with a plurality of first groove groups at intervals along the circumferential direction, each first groove group comprises a plurality of first grooves provided at intervals along the circumferential direction of the circular electrochromic film, each first groove penetrates the first substrate layer, the first conductive layer and the electrochromic layer to expose part of the second conductive layer to form a positive electrode, and the positive electrodes in the plurality of first grooves of the same first groove group form a first electrode region.

[0027] The circular electrochromic diaphragm is provided with a plurality of second groove groups in the circumferential direction, each second groove group comprises a plurality of second grooves arranged in the circumferential direction of the circular electrochromic diaphragm, and each second groove penetrates the second base layer, the second conductive layer and the electrochromic layer to expose part of the first conductive layer to form a negative electrode, and the negative electrodes in the plurality of second grooves of the same second groove group form a second electrode area.

[0028] In a possible design, at least two adjacent first electrode areas are provided with a third groove, the third groove penetrates the first base layer, the first conductive layer and the electrochromic layer to expose part of the second conductive layer, and the first bus assembly is electrically connected with the second conductive layer exposed via the third groove; and / or,

[0029] At least two adjacent second electrode areas are provided with a fourth groove, the fourth groove penetrates the second base layer, the second conductive layer and the electrochromic layer to expose part of the first conductive layer, and the second bus assembly is electrically connected with the first conductive layer exposed via the fourth groove.

[0030] In a possible design, the first bus assembly is covered with a first glue body, and the second bus assembly is covered with a second glue body.

[0031] One end of the first glue body is attached to the first base layer, and the other end of the first glue body is attached to the second conductive layer, one end of the second glue body is attached to the second base layer, and the other end of the second glue body is attached to the first conductive layer.

[0032] Alternatively, one end of the first glue body is attached to the first base layer, one end of the second glue body is attached to the second base layer, and the other end of the first glue body and the other end of the second glue body extend to the edge of the circular electrochromic diaphragm and are attached to each other.

[0033] In a second aspect, the present application provides an electrochromic glass, comprising a first glass, a circular electrochromic diaphragm provided by any of the technical solutions above and a second glass arranged in layers.

[0034] The circular electrochromic diaphragm provided by the present application has the following beneficial effects: compared with the prior art, when the plurality of positive electrodes of each first electrode area is powered through the first bus assembly and the plurality of negative electrodes of each second electrode area is powered through the second bus assembly, an electric field can be formed between the first electrode area and the second electrode area, thereby promoting the circular electrochromic diaphragm to change color. Since the plurality of first electrode areas and the plurality of second electrode areas are uniformly arranged on the outer peripheral edge of the circular electrochromic diaphragm along the circumferential direction of the circular electrochromic diaphragm, the circular electrochromic diaphragm can change color from the outer peripheral edge to the middle, which is conducive to improving the uniformity of the color change effect.

[0035] The beneficial effects of the electrochromic glass provided in this application are as follows: compared with the prior art, since the electrochromic glass of this application includes the circular electrochromic film provided by any of the above technical solutions, it has at least all of the above-mentioned beneficial effects, which will not be repeated here. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a top view of a partial structure of a circular electrochromic film provided in one embodiment of this application. Figure 1 ;

[0038] Figure 2 This is a schematic diagram of a circular electrochromic film concealing the first and second lead-out electrodes, provided in one embodiment of this application.

[0039] Figure 3 This is a top view of a circular electrochromic film provided in one embodiment of this application;

[0040] Figure 4 This is a top view of a circular electrochromic film provided in another embodiment of this application;

[0041] Figure 5 yes Figure 4 A magnified view of a portion of point A in the middle;

[0042] Figure 6 This is a top view of a circular electrochromic film provided in another embodiment of this application;

[0043] Figure 7 This is a schematic diagram of the structure of a circular electrochromic film concealing the first and second lead-out electrodes, provided in another embodiment of this application.

[0044] Figure 8 This is a top view of a circular electrochromic film provided in another embodiment of this application;

[0045] Figure 9 This is a bottom view of a circular electrochromic film provided in another embodiment of this application;

[0046] Figure 10 This is a top view of a partial structure of a circular electrochromic film provided in one embodiment of this application. Figure 2 ;

[0047] Figure 11 is a top view of a partial structure of a circular electrochromic film provided by another embodiment of the present application;

[0048] Figure 12 is a bottom view of a partial structure of a circular electrochromic film provided by an embodiment of the present application;

[0049] Figure 13 is a bottom view of a partial structure of a circular electrochromic film provided by another embodiment of the present application;

[0050] Figure 14 is a schematic view of a partial structure of a circular electrochromic film provided by another embodiment of the present application;

[0051] Figure 15 is a schematic view of a partial structure of a circular electrochromic film provided by another embodiment of the present application;

[0052] Figure 16 is a schematic view of a partial structure of a circular electrochromic film provided by another embodiment of the present application;

[0053] Figure 17 is a schematic view of a structure of an electrochromic glass provided by an embodiment of the present application;

[0054] Figure 18 is a schematic view of an application of an electrochromic glass to a dome skylight provided by an embodiment of the present application Figure 1 .

[0055] The label details involved in the above figures are as follows:

[0056] 1, electrochromic glass; 10, circular electrochromic film;

[0057] 110, first substrate layer; 120, first conductive layer; 130, electrochromic layer; 140, second conductive layer; 150, second substrate layer; 210, first electrode area; 211, positive electrode; 220, first groove group; 221, first groove; 240, third groove; 310, second electrode area; 311, negative electrode; 320, second groove group; 321, second groove; 340, fourth groove; 360, through groove; 400, first bus assembly; 410, first bus bar; 420, first intermediate bus bar; 500, second bus assembly; 510, second bus bar; 520, second intermediate bus bar; 600, first colloid; 700, second colloid; 800, annular groove; 810, third side surface; 820, fourth side surface; 910, first lead-out electrode; 920, second lead-out electrode. DETAILED DESCRIPTION

[0058] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application and not to limit the present application.

[0059] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be electrically connected to the other element.

[0060] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the indicated structure or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0061] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0062] In order to illustrate the technical solutions described in the present application, the following will be described in detail with reference to the specific drawings and embodiments.

[0063] Please refer to Figure 1 and Figure 2 One embodiment of the present application provides a circular electrochromic diaphragm 10, comprising a plurality of first electrode regions 210, a plurality of second electrode regions 310, a first bus assembly 400 and a second bus assembly 500. It should be noted that the circular electrochromic diaphragm 10 provided by the embodiment of the present application has the characteristic of electrochromism, and the circular electrochromic diaphragm 10 can be caused to change color by applying an electric field to the circular electrochromic diaphragm 10. In practical applications, the circular electrochromic diaphragm 10 provided by the embodiment of the present application can be applied to a dome skylight, glasses, a smart watch or a housing or a display panel of other types of electronic products, etc.

[0064] The plurality of first electrode areas 210 are located at the outer peripheral edge of the circular electrochromic diaphragm 10, and the plurality of first electrode areas 210 are uniformly arranged around the circumference of the circular electrochromic diaphragm 10. The first electrode area 210 includes a plurality of positive electrodes 211. It can be understood that the outer peripheral edge of the circular electrochromic diaphragm 10 is provided with a plurality of positive electrodes 211, the plurality of positive electrodes 211 are divided into a plurality of groups, and the plurality of groups of positive electrodes 211 are uniformly arranged around the circumference of the circular electrochromic diaphragm 10. The plurality of positive electrodes 211 in each group form a first electrode area 210. Optionally, the number of positive electrodes 211 in each first electrode area 210 can be equal or not equal.

[0065] The plurality of second electrode areas 310 are located at the outer peripheral edge of the circular electrochromic diaphragm 10, and the plurality of second electrode areas 310 are uniformly arranged around the circumference of the circular electrochromic diaphragm 10. The second electrode area 310 includes a plurality of negative electrodes 311. It can be understood that the outer peripheral edge of the circular electrochromic diaphragm 10 is provided with a plurality of negative electrodes 311, the plurality of negative electrodes 311 are divided into a plurality of groups, and the plurality of groups of negative electrodes 311 are uniformly arranged around the circumference of the circular electrochromic diaphragm 10. The plurality of negative electrodes 311 in each group form a second electrode area 310. Optionally, the number of negative electrodes 311 in each second electrode area 310 can be equal or not equal. Optionally, the number of first electrode areas 210 and the number of second electrode areas 310 can be equal or not equal.

[0066] The first bus assembly 400 is connected to the plurality of positive electrodes 211, and the second bus assembly 500 is connected to the plurality of negative electrodes 311. Optionally, the first bus assembly 400 and the second bus assembly 500 can include but are not limited to conductive copper foil, conductive adhesive, conductive resin or other conductive structures. Specifically, the first bus assembly 400 and the second bus assembly 500 can be made of at least one conductive material such as conductive silver paste, conductive copper paste, conductive carbon paste, nano-silver conductive ink, copper foil, copper wire and conductive adhesive film. By connecting the external power supply through the first bus assembly 400 and the second bus assembly 500, the plurality of positive electrodes 211 and the plurality of negative electrodes 311 can be energized to form an electric field between the first electrode area 210 and the second electrode area 310, thereby enabling the circular electrochromic diaphragm 10 to change color. Since the plurality of first electrode areas 210 and the plurality of second electrode areas 310 are uniformly arranged along the circumference of the circular electrochromic diaphragm 10 at the outer peripheral edge of the circular electrochromic diaphragm 10, the circular electrochromic diaphragm 10 can change color from the outer peripheral edge to the middle, which is beneficial to improve the uniformity of the color change effect.

[0067] In the prior art, for a circular electrochromic diaphragm, when a bus bar is arranged thereon, a long strip-shaped bus bar is usually used to surround the outer edge of the circular electrochromic diaphragm and is attached to the electrode on the diaphragm. However, since the outer edge of the diaphragm has a curvature, when the long strip-shaped bus bar surrounds the edge of the diaphragm, wrinkles are easily generated, which leads to a thicker edge of the diaphragm and a phenomenon of diaphragm cracking in the subsequent diaphragm combining process. In order to solve this technical problem, as shown in Figure 2 The first bus assembly 400 includes a plurality of first bus bars 410, and each first bus bar 410 is arranged in one-to-one correspondence with the first electrode area 210 and is connected with the plurality of positive electrodes 211 in the corresponding first electrode area 210. When the first bus assembly 400 is arranged in sections, wrinkles generated when the first bus assembly 400 is distributed along the circumference of the circular electrochromic diaphragm 10 can be effectively reduced, and the flatness of the first bus assembly 400 can be improved. Specifically, since the first electrode area 210 is divided on the electrochromic diaphragm 10, each first electrode area 210 is attached to a section of the first bus bar 410, which enables the first bus bar 410 to be electrically connected with the positive electrodes 211 in the electrode area. When the first bus bar 410 at the electrode area is connected with an external power circuit, the plurality of positive electrodes 211 in the electrode area can be quickly powered. In this way, wrinkles generated when the first bus assembly 410 is bent during the whole-circle attachment can be avoided, and the yield of the subsequent diaphragm combining can be improved. In addition, the first bus bar 410 can be individually connected with different external circuits according to design requirements to realize the partition control of the diaphragm.

[0068] Similarly, as shown in Figure 2 The second bus assembly 500 includes a plurality of second bus bars 510, and each second bus bar 510 is arranged in one-to-one correspondence with the second electrode area 310 and is connected with the plurality of negative electrodes 311 in the corresponding second electrode area 310. In this way, the same beneficial effects as described above can be achieved, and details are not described herein.

[0069] In order to realize the connection between the electrochromic diaphragm and the external power circuit, an outgoing electrode needs to be arranged on the first bus assembly 400 and the second bus assembly 500. For the design of the outgoing electrode of the electrochromic diaphragm in the present application, there are mainly two kinds: one is that each first bus bar 410 and each second bus bar 510 corresponds to an outgoing electrode, and since there are a plurality of first bus bars 410 and a plurality of second bus bars 510, a plurality of pairs of outgoing electrodes need to be provided; the other is that the plurality of first bus bars 410 are electrically connected, and the plurality of second bus bars 510 are electrically connected, so that only one pair of outgoing electrodes needs to be provided. Hereinafter, the design of the outgoing electrode is described in detail.

[0070] In a possible design, as shown in Figures 3 to 5As shown, each first busbar 410 is connected to a first lead-out electrode 910, and each second busbar 510 is connected to a second lead-out electrode 920. An external power source is connected through the first and second lead-out electrodes 910 and 920, energizing the multiple positive electrodes 211 connected to each first busbar 410 and the multiple negative electrodes 311 connected to each second busbar 510. Here, since each first busbar 410 is connected to a first lead-out electrode 910 and each second busbar 510 is connected to a second lead-out electrode 920, different first lead-out electrodes 910 can conduct electricity to their corresponding first busbar 410, and similarly, different second lead-out electrodes 920 can conduct electricity to their corresponding second busbar 510, thereby achieving zoned control of the electrochromic film.

[0071] The first lead-out electrode 910 and the second lead-out electrode 920 are conductive structures. Exemplarily, the first lead-out electrode 910 and the second lead-out electrode 920 can be FPC (Flexible Printed Circuit), rolled copper foil, rolled aluminum foil, electrolytic copper foil, electrolytic aluminum foil, or other conductive structures. Optionally, the material of the first lead-out electrode 910 and the second lead-out electrode 920 can be one or more combinations of aluminum, copper, silver, other conductive elemental metals, non-metallic semiconductor conductive materials, and conductive metal oxides.

[0072] Optionally, the first lead electrode 910 and the first busbar 410 can be connected by welding, or they can be connected by conductive adhesive (such as ACF (Anisotropic Conductive Film)). Optionally, the connection method between the second lead electrode 920 and the second busbar 510 can be the same as that between the first lead electrode 910 and the first busbar 410, and will not be described again here.

[0073] In one possible design, such as Figure 6 As shown, any two adjacent first busbars 410 are connected to each other to enable electrical conduction between them. Thus, by connecting only one first busbar 410 to a first lead electrode 910 and then connecting an external power source through this first lead electrode 910, all the first busbars 410 can be energized, thereby energizing the multiple positive electrodes 211 of each first electrode region 210. Reducing the number of first lead electrodes 910 simplifies wiring and saves wiring space.

[0074] In some examples, two adjacent first bus bars 410 can be directly connected. For example, as shown in FIG. 1A, any two adjacent first bus bars 410 are overlapped, and one of the two first bus bars 410 is connected with a first lead electrode 910. It can be understood that the two ends of any two adjacent first bus bars 410 are in contact with each other, so that the two adjacent first bus bars 410 can be electrically connected. Figure 2 or Figure 6 It can be understood that the two ends of any two adjacent first bus bars 410 are in contact with each other, so that the two adjacent first bus bars 410 can be electrically connected.

[0075] In some other examples, an intermediate conductive structure can be arranged between two adjacent first bus bars 410, and the two adjacent first bus bars 410 are electrically connected through the intermediate conductive structure. For example, as shown in FIG. 1B, the first bus assembly 400 further comprises one or more first intermediate bus bars 420, and the first intermediate bus bars 420 are connected between two adjacent first bus bars 410. In this embodiment, one of the two adjacent first bus bars 410 or one of the first intermediate bus bars 420 is connected with a first lead electrode 910. In this embodiment, at least some of the first bus bars 410 are arranged in pairs, and the first intermediate bus bars 420 are arranged between the two first bus bars 410 in each pair. That is, at least some of the first bus bars 410 are electrically connected through the first intermediate bus bars 420. Figure 7 and Figure 8 In this embodiment, at least some of the first bus bars 410 are arranged in pairs, and the first intermediate bus bars 420 are arranged between the two first bus bars 410 in each pair. That is, at least some of the first bus bars 410 are electrically connected through the first intermediate bus bars 420. In this way, the length of the two first bus bars 410 connected through the first intermediate bus bars 420 can be shortened, which is beneficial to further reduce the wrinkles generated when the first bus bars 410 are distributed along the circumference of the circular electrochromic film 10, thereby further improving the flatness of the first bus bars 410.

[0076] In one example, as shown in FIG. 1C, the number of first electrode regions 210 and the number of first bus bars 410 are both two, and the two first electrode regions 210 are symmetrically arranged. The two first bus bars 410 are arranged one by one with the two first electrode regions 210. In this example, the two first bus bars 410 have two pairs of ends close to each other, and the number of first intermediate bus bars 420 can be one or two. Figure 7 When the number of first intermediate bus bars 420 is one, the first intermediate bus bar 420 is arranged between one pair of ends close to each other of the two first bus bars 410. That is, one pair of ends close to each other of the two first bus bars 410 are electrically connected through the first intermediate bus bar 420, and the other pair of ends close to each other are overlapped. When the number of first intermediate bus bars 420 is two, the first intermediate bus bars 420 and the first bus bars 410 are arranged alternately around the circumference of the circular electrochromic film 10, and any adjacent first intermediate bus bar 420 and first bus bar 410 are connected.

[0077] Optionally, the first intermediate busbar 420 and the first busbar 410 can be connected by overlapping or welding. Alternatively, the first intermediate busbar 420 and the first busbar 410 can also be connected by conductive adhesive.

[0078] In one possible design, such as Figure 9 As shown, any two adjacent second busbars 510 are connected to each other to enable electrical conduction between them. Thus, by connecting only one second busbar 510 to a second lead electrode 920 and then connecting an external power source through this second lead electrode 920, all the second busbars 510 can be energized, thereby energizing the multiple negative electrodes 311 of each second electrode region 310. This reduces the number of second lead electrodes 920, thereby simplifying wiring and reducing wiring space.

[0079] In some embodiments, two adjacent second busbars 510 can be directly connected. For example, any two adjacent second busbars 510 are overlapped, with one of the second busbars 510 connected to a second lead electrode 920. This can be understood as the two adjacent ends of any two adjacent second busbars 510 being in contact, enabling electrical conduction between the two adjacent second busbars 510.

[0080] In other embodiments, an intermediate conductive structure may be provided between two adjacent second busbars 510, and the two adjacent second busbars 510 are electrically connected through the intermediate conductive structure. For example, as shown... Figure 9 As shown, the second bus assembly 500 further includes one or more second intermediate busbars 520, which connect two adjacent second busbars 510. One of the second busbars 510 or one of the second intermediate busbars 520 is connected to a second lead electrode 920. In this embodiment, among the plurality of second busbars 510, at least two adjacent second busbars 510 are connected by a second intermediate busbar 520, that is, at least two adjacent second busbars 510 are electrically connected through the second intermediate busbar 520. This arrangement can shorten the length of the two second busbars 510 electrically connected by the second intermediate busbar 520, which is beneficial to further reduce the wrinkles generated when the second busbars 510 are distributed circumferentially along the circular electrochromic film 10, thereby further improving the flatness of the second busbars 510.

[0081] It should be noted that the second bus bar 510 and the second intermediate bus bar 520 can be arranged in the same manner as the first bus bar 410 and the first intermediate bus bar 420, and the second bus bar 510 and the second intermediate bus bar 520 can be connected in the same manner as the first bus bar 410 and the first intermediate bus bar 420, which will not be described herein.

[0082] Optionally, the number of the first electrode regions 210 can be 2-6. In an example, as shown in FIG. 2A, the number of the first electrode regions 210 is 2, and the two first electrode regions 210 are symmetrically distributed on the circular electrochromic film 10. In another example, as shown in FIG. 2B, the number of the first electrode regions 210 is 4, and the four first electrode regions 210 are uniformly spaced around the circumference of the circular electrochromic film 10. Figure 10 Figure 11

[0083] Optionally, the number of the second electrode regions 310 can be 2-6. In an example, as shown in FIG. 3A, the number of the second electrode regions 310 is 2, and the two second electrode regions 310 are symmetrically distributed on the circular electrochromic film 10. In another example, as shown in FIG. 3B, the number of the second electrode regions 310 is 4, and the four second electrode regions 310 are uniformly spaced around the circumference of the circular electrochromic film 10. Figure 12 Figure 13

[0084] Optionally, when the outer diameter of the circular electrochromic film 10 is greater than 1 m, the number of the first electrode regions 210 and the second electrode regions 310 can be set to 2 respectively. When the outer diameter of the circular electrochromic film 10 is in the range of 0.3-1 m, the number of the first electrode regions 210 and the second electrode regions 310 can be set to 4 respectively. In this way, the color changing speed and uniformity of the circular electrochromic film 10 can be considered, and the difficulty of arranging the first bus bar 410 and the second bus bar 510 can be reduced, and the wrinkles generated by the first bus bar 410 and the second bus bar 510 can be reduced.

[0085] Optionally, the number of the first electrode regions 210 is equal to the number of the second electrode regions 310. In this way, the color changing uniformity of the circular electrochromic film 10 can be improved.

[0086] ​​​​Optionally, the number of positive electrodes 211 in each first electrode region 210 is equal, and the number of negative electrodes 311 in each second electrode region 310 is equal. The equal number of positive electrodes 211 in each first electrode region 210 makes the space occupied by each first electrode region 210 at the outer peripheral edge of the circular electrochromic diaphragm 10 equal, so as to facilitate more uniform distribution of the plurality of first electrode regions 210 around the circumference of the circular electrochromic diaphragm 10; similarly, the equal number of negative electrodes 311 in each second electrode region 310 makes the space occupied by each second electrode region 310 at the outer peripheral edge of the circular electrochromic diaphragm 10 equal, so as to facilitate more uniform distribution of the plurality of second electrode regions 310 around the circumference of the circular electrochromic diaphragm 10. In this way, the color change uniformity of the circular electrochromic diaphragm 10 is further improved.

[0087] In one possible design, as shown in FIG. 1, the positive electrodes 211 and the negative electrodes 311 are arranged in a staggered manner along the circumference of the circular electrochromic diaphragm 10. Such arrangement makes any one positive electrode 211 adjacent to at least one negative electrode 311, which is conducive to improving the color change speed and the color change uniformity of the circular electrochromic diaphragm 10. Figure 1 and Figure 2 In one possible design, as shown in FIG. 1, the positive electrodes 211 and the negative electrodes 311 are arranged in a staggered manner along the circumference of the circular electrochromic diaphragm 10. Such arrangement makes any one positive electrode 211 adjacent to at least one negative electrode 311, which is conducive to improving the color change speed and the color change uniformity of the circular electrochromic diaphragm 10.

[0088] In one possible design, as shown in FIG. 1, the positive electrodes 211 and the negative electrodes 311 are arranged in a staggered manner along the circumference of the circular electrochromic diaphragm 10. Such arrangement makes any one positive electrode 211 adjacent to at least one negative electrode 311, which is conducive to improving the color change speed and the color change uniformity of the circular electrochromic diaphragm 10. Figure 2

[0089] In some embodiments, as shown in FIG. 1, the circular electrochromic diaphragm 10 comprises a first substrate layer 110, a first conductive layer 120, an electrochromic layer 130, a second conductive layer 140 and a second substrate layer 150 which are sequentially stacked. The first substrate layer 110, the first conductive layer 120, the electrochromic layer 130, the second conductive layer 140 and the second substrate layer 150 are all circular layer structures, and the first substrate layer 110, the first conductive layer 120, the electrochromic layer 130, the second conductive layer 140 and the second substrate layer 150 are coaxially arranged.

[0089] In some embodiments, as shown in FIG. 1, the circular electrochromic diaphragm 10 comprises a first substrate layer 110, a first conductive layer 120, an electrochromic layer 130, a second conductive layer 140 and a second substrate layer 150 which are sequentially stacked. The first substrate layer 110, the first conductive layer 120, the electrochromic layer 130, the second conductive layer 140 and the second substrate layer 150 are all circular layer structures, and the first substrate layer 110, the first conductive layer 120, the electrochromic layer 130, the second conductive layer 140 and the second substrate layer 150 are coaxially arranged. Figure 14As shown, the outer diameter of the electrochromic layer 130 is smaller than the outer diameter of the first conductive layer 120 and the outer diameter of the second conductive layer 140, respectively, and the outer diameter of the first conductive layer 120 and the outer diameter of the second conductive layer 140 can be equal or not equal. The outer peripheral surface of the electrochromic layer 130, the side of the first conductive layer 120 facing the second conductive layer 140, and the side of the second conductive layer 140 facing the first conductive layer 120 surround to form an annular groove 800, the side of the first conductive layer 120 facing the second conductive layer 140 is the third side 810 of the annular groove 800, and the side of the second conductive layer 140 facing the first conductive layer 120 is the fourth side 820 of the annular groove 800. In this embodiment, a plurality of first electrode areas 210 are arranged on the third side 810, a plurality of second electrode areas 310 are arranged on the fourth side 820, the first bus bar 410 in the first bus assembly 400 is attached to the third side 810, and the second bus bar 510 in the second bus assembly 500 is attached to the fourth side 820.

[0090] In other embodiments, as shown in FIG. 2, the circular electrochromic diaphragm 10 is provided with a plurality of first recess groups 220 arranged along the circumferential direction, each first recess group 220 comprising a plurality of first recesses 221 arranged along the circumferential direction of the circular electrochromic diaphragm 10, the first recess 221 penetrating the first substrate layer 110, the first conductive layer 120, and the electrochromic layer 130 to expose part of the second conductive layer 140 to form a positive electrode 211, and the positive electrodes 211 in the plurality of first recesses 221 of the same first recess group 220 form a first electrode area 210. The circular electrochromic diaphragm 10 is provided with a plurality of second recess groups 320 arranged along the circumferential direction, each second recess group 320 comprising a plurality of second recesses 321 arranged along the circumferential direction of the circular electrochromic diaphragm 10, the second recess 321 penetrating the second substrate layer 150, the second conductive layer 140, and the electrochromic layer 130 to expose part of the first conductive layer 120 to form a negative electrode 311, and the negative electrodes 311 in the plurality of second recesses 321 of the same second recess group 320 form a second electrode area 310. Figure 2

[0091] It can be understood that the number of first recess groups 220 is equal to the number of first electrode areas 210, and the number of first recesses 221 in each first recess group 220 is equal to the number of positive electrodes 211 in each first electrode area 210. Similarly, the number of second recess groups 320 is equal to the number of second electrode areas 310, and the number of second recesses 321 in each second recess group 320 is equal to the number of negative electrodes 311 in each second electrode area 310.

[0092] ​The first busbar assembly 400 is connected to a plurality of positive electrodes 211. Specifically, the first busbars 410 in the first busbar assembly 400 are respectively connected to the second conductive layer 140 exposed through the first groove 221. The second busbar assembly 500 is connected to a plurality of negative electrodes 311. Specifically, the second busbars 510 in the second busbar assembly 500 are respectively connected to the first conductive layer 120 exposed through the second groove 321.

[0093] In one example, such as Figure 2 As shown, the first bus assembly 400 includes a plurality of first busbars 410, each corresponding to a plurality of first groove groups 220. Each first busbar 410 is attached to the side of the first substrate layer 110 away from the first conductive layer 120, and a portion of each first busbar 410 is located within a first groove 221 of its corresponding first groove group 220 and is in contact with the second conductive layer 140. The second bus assembly 500 includes a plurality of second busbars 510, each corresponding to a plurality of second groove groups 320. Each second busbar 510 is attached to the side of the second substrate layer 150 away from the second conductive layer 140, and a portion of each second busbar 510 is located within a second groove 321 of its corresponding second groove group 320 and is in contact with the first conductive layer 120.

[0094] The electrochromic layer 130 is a gel-like or solid layered structure, and may include one or more layers of material. Optionally, the electrochromic layer 130 may be a polymer-dispersed liquid crystal (PDLC) layer, a suspended particle device (SPD) layer, or an electrochromic (EC) layer. In one example, the electrochromic layer 130 is an electrochromic structure, comprising a color-changing material layer, an electrolyte layer, and an ion storage layer stacked sequentially. The materials of the color-changing material layer, the electrolyte layer, and the ion storage layer may be materials disclosed in the prior art, and are not specifically limited herein. When the first conductive layer 120 and the second conductive layer 140 are energized, an electric field is formed between the first conductive layer 120 and the second conductive layer 140, thereby causing the electrochromic layer 130 located between the first conductive layer 120 and the second conductive layer 140 to change color.

[0095] The first conductive layer 120 and the second conductive layer 140 are both transparent conductive layers, and the material of the transparent conductive layer can be a transparent conductive material well known to those skilled in the art, such as indium tin oxide (ITO), aluminum zinc oxide (AZO), fluorine-doped tin oxide (FTO), silver nanowires, graphene, carbon nanotubes, metal mesh, or silver nanoparticles, etc.

[0096] The first substrate layer 110 and the second substrate layer 150 are both transparent substrates, that is, the first substrate layer 110 and the second substrate layer 150 are both made of an optical-grade transparent material. Specifically, the first substrate layer 110 and the second substrate layer 150 can be a flexible substrate material, and specifically, the flexible substrate material can be polyethylene glycol terephthalate (PET), polycarbonate (PC), polyimide (PI), cyclic olefin copolymer, or cellulose triacetate, etc. Alternatively, the first substrate layer 110 and the second substrate layer 150 can also be a glass substrate.

[0097] Optionally, as shown in Figure 15 and Figure 16 , a through groove 360 is arranged in the interval region between the adjacent first groove 221 and the second groove 321, and the adjacent first groove 221 and the second groove 321 are communicated through the through groove 360. The through groove 360 penetrates the first conductive layer 120, the electrochromic layer 130, the second conductive layer 140, the first substrate layer 110, and the second substrate layer 150. By arranging the through groove 360, the thickness of the interval region between the adjacent first groove 221 and the second groove 321 is reduced, and the phenomenon of crack piece in the subsequent glass splicing process is avoided.

[0098] The through groove 360 is provided with an insulating portion, and the insulating portion is located between the first bus bar 410 and the second bus bar 510, which can prevent the first bus bar 410 and the second bus bar 510 from being in contact and causing short circuit.

[0099] In one possible design, as shown in Figure 15 and Figure 16As shown, at least two adjacent first electrode areas 210 are provided with a third groove 240, the third groove 240 penetrating the first substrate layer 110, the first conductive layer 120 and the electrochromic layer 130 to expose part of the second conductive layer 140, and the first bus assembly 400 is electrically connected with the second conductive layer 140 exposed via the third groove 240. That is, at least two adjacent first groove groups 220 are provided with a third groove 240, and by providing the third groove 240, the thickness of the interval region between the two adjacent first groove groups 220 is reduced.

[0100] Optionally, the second conductive layer 140 exposed via the third groove 240 can be connected with the first bus bar 410 in the first bus assembly 400. Specifically, the part of the first bus bar 410 corresponding to the first electrode area 210 adjacent to the third groove 240 is located in the third groove 240 and is attached to the second conductive layer 140.

[0101] When the first bus assembly 400 further includes a first intermediate bus bar 420, the second conductive layer 140 exposed via the third groove 240 can also be connected with the first intermediate bus bar 420. Specifically, each third groove 240 is provided with a first intermediate bus bar 420. The first intermediate bus bar 420 corresponding to the third groove 240 is attached to the second conductive layer 140 exposed via the third groove 240, and the first intermediate bus bar 420 corresponding to the third groove 240 is also connected with the first bus bar 410 corresponding to the two first electrode areas 210 adjacent to the third groove 240. For ease of description, the following description takes the second conductive layer 140 exposed via the third groove 240 connected with the first intermediate bus bar 420 as an example.

[0102] In one possible design, as shown in Figure 15 and Figure 16 At least two adjacent second electrode areas 310 are provided with a fourth groove 340, the fourth groove 340 penetrating the second substrate layer 150, the second conductive layer 140 and the electrochromic layer 130 to expose part of the first conductive layer 120, and the second bus assembly 500 is electrically connected with the first conductive layer 120 exposed via the fourth groove 340. That is, at least two adjacent second groove groups 320 are provided with a fourth groove 340, and by providing the fourth groove 340, the thickness of the interval region between the two adjacent second groove groups 320 is reduced, and the phenomenon of crack in the subsequent glass bonding process can also be avoided.

[0103] Optionally, the first conductive layer 120 exposed via the fourth groove 340 can be connected with the second bus bar 510 in the second bus assembly 500. Specifically, the second bus bar 510 corresponding to the second electrode area 310 adjacent to the fourth groove 340 extends into the fourth groove 340 and is attached to the first conductive layer 120.

[0104] When the second bus assembly 500 further includes a second intermediate bus bar 520, the first conductive layer 120 exposed via the fourth groove 340 can also be connected with the second intermediate bus bar 520. Specifically, one second intermediate bus bar 520 is provided corresponding to each fourth groove 340. The second intermediate bus bar 520 corresponding to the fourth groove 340 is connected with the first conductive layer 120 exposed via the fourth groove 340, and the second intermediate bus bar 520 corresponding to the fourth groove 340 is also connected with the second bus bar 510 corresponding to the two second electrode areas 310 adjacent to the fourth groove 340, respectively. For ease of description, the following description is based on the example that the first conductive layer 120 exposed via the fourth groove 340 is connected with the second intermediate bus bar 520 in the second bus assembly 500.

[0105] In a possible design, the first bus assembly 400 is covered with a first glue body 600, and the second bus assembly 500 is covered with a second glue body 700. The first glue body 600 and the second glue body 700 are made of insulating materials, and by providing the first glue body 600 and the second glue body 700, an insulating barrier layer can be formed on the outer surfaces of the first bus assembly 400 and the second bus assembly 500.

[0106] In an example, one end of the first glue body 600 is attached to the first base layer 110, and the other end of the first glue body 600 is attached to the second conductive layer 140. One end of the second glue body 700 is attached to the second base layer 150, and the other end of the second glue body 700 is attached to the first conductive layer 120. By providing the first glue body 600 and the second glue body 700, on the one hand, the first bus assembly 400 and the second bus assembly 500 can be fixed to ensure the structural stability, and on the other hand, the sealing performance of the membrane can be improved by preventing water vapor and dust from entering the inside of the membrane.

[0107] In another example, one end of the first glue body 600 is attached to the first base layer 110, and one end of the second glue body 700 is attached to the second base layer 150. The other end of the first glue body 600 and the other end of the second glue body 700 extend to the edge of the circular electrochromic membrane 10 and are attached to each other. By using this Y-shaped attachment method, the sealing performance of the membrane can be more effectively ensured, and the membrane edge can also be prevented from being detached.

[0108] In this way, the first groove 221, the second groove 321, the third groove 240 and the fourth groove 340 can be respectively enclosed by the first colloid 600 and the second colloid 700 to form independent closed spaces, so that water, dust or other conductive substances outside can be effectively prevented from entering the inside of the circular electrochromic film 10 through at least one of the first groove 221, the second groove 321, the third groove 240 and the fourth groove 340. In the subsequent glass lamination process, PVB (Polyvinyl Butyral) is used as the interlayer material. In this way, the PVB small molecules can also be effectively prevented from entering the inside of the circular electrochromic film 10 through at least one of the first groove 221, the second groove 321, the third groove 240 and the fourth groove 340 in the subsequent lamination process, so as to prevent the PVB small molecules from reacting with the electrochromic layer 130.

[0109] As shown in Figure 17 Another embodiment of the present application also provides an electrochromic glass 1, which comprises a first glass, the circular electrochromic film 10 provided by any of the above embodiments and a second glass arranged in layers. In the manufacturing process, the circular electrochromic film 10 can be stably sandwiched between the first glass and the second glass by high-pressure lamination. Since the electrochromic glass 1 provided by the embodiment of the present application comprises the circular electrochromic film 10 provided by any of the above embodiments, it has at least all the beneficial effects described above, which will not be repeated here.

[0110] In actual applications, the electrochromic glass 1 provided by the embodiment of the present application can be applied to building glass, glasses, housings or display panels of electronic products, etc. For example, the electrochromic glass provided by the embodiment of the present application is applied to building glass. Please refer to Figure 18 The electrochromic glass is applied to a dome skylight, and the electrochromic glass 1 provided by the embodiment of the present application is arranged in the middle part of the dome skylight, so that the electrochromic function can be realized in the middle part of the dome skylight.

[0111] The above only describes optional embodiments of the present application and does not limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A circular electrochromic film, characterized in that, include: Multiple first electrode regions are located at the outer peripheral edge of the circular electrochromic film. The multiple first electrode regions are uniformly arranged around the circumference of the circular electrochromic film. Each first electrode region includes multiple positive electrodes. Multiple second electrode regions are located at the outer peripheral edge of the circular electrochromic film. The multiple second electrode regions are uniformly arranged around the circumference of the circular electrochromic film. Each second electrode region includes multiple negative electrodes. A first busbar assembly is connected to the plurality of positive electrodes; A second bus assembly is connected to the plurality of negative electrodes.

2. The circular electrochromic film as described in claim 1, characterized in that, The first busbar assembly includes a plurality of first busbars, each of which is configured to correspond one-to-one with a first electrode region, and each first busbar is connected to a plurality of positive electrodes in its corresponding first electrode region; The second busbar assembly includes a plurality of second busbars, each of which is configured in a one-to-one correspondence with a second electrode region, and each second busbar is connected to a plurality of negative electrodes in its corresponding second electrode region.

3. The circular electrochromic film as described in claim 2, characterized in that, Each of the first busbars is connected to a first lead electrode, and each of the second busbars is connected to a second lead electrode.

4. The circular electrochromic film as described in claim 2, characterized in that, In a plurality of first busbars, any two adjacent first busbars are connected, wherein: Any two adjacent first busbars overlap, and one of the first busbars is connected to a first lead-out electrode; or... The first bus assembly further includes one or more first intermediate bus bars, each of which connects two adjacent first bus bars, and one of the first bus bars or one of the first intermediate bus bars is connected to a first lead electrode; And / or, In a plurality of second busbars, any two adjacent second busbars are connected, wherein: Any two adjacent second busbars overlap, and one of the second busbars is connected to a second lead electrode; or... The second bus assembly further includes one or more second intermediate bus bars, which connect two adjacent second bus bars, and one of the second bus bars or one of the second intermediate bus bars is connected to a second lead electrode.

5. The circular electrochromic film as described in any one of claims 1 to 4, characterized in that, The positive electrode and the negative electrode are arranged alternately along the circumference of the circular electrochromic film.

6. The circular electrochromic film as described in any one of claims 1 to 4, characterized in that, The number of the first electrode regions is equal to the number of the second electrode regions; And / or, The number of positive electrodes in each of the first electrode regions is equal, and the number of negative electrodes in each of the second electrode regions is equal.

7. The circular electrochromic film as described in any one of claims 1 to 4, characterized in that, The circular electrochromic film includes a first base layer, a first conductive layer, an electrochromic layer, a second conductive layer, and a second base layer stacked sequentially. The circular electrochromic film is provided with a plurality of first groove groups spaced apart along the circumference. The first groove group includes a plurality of first grooves spaced apart along the circumference of the circular electrochromic film. The first grooves penetrate the first substrate layer, the first conductive layer and the electrochromic layer to expose a portion of the second conductive layer to form the positive electrode. The positive electrodes in the plurality of first grooves in the same first groove group form the first electrode region. The circular electrochromic film is provided with a plurality of second groove groups spaced apart along the circumference. The second groove group includes a plurality of second grooves spaced apart along the circumference of the circular electrochromic film. The second grooves penetrate the second substrate layer, the second conductive layer and the electrochromic layer to expose a portion of the first conductive layer to form the negative electrode. The negative electrode in the plurality of second grooves in the same second groove group forms the second electrode region.

8. The circular electrochromic film as described in claim 7, characterized in that, A third groove is provided between at least two adjacent first electrode regions, the third groove penetrating the first substrate layer, the first conductive layer, and the electrochromic layer to expose a portion of the second conductive layer, and the first bus assembly is electrically connected to the second conductive layer exposed via the third groove; and / or, A fourth groove is provided between at least two adjacent second electrode regions. The fourth groove penetrates the second substrate layer, the second conductive layer, and the electrochromic layer to expose a portion of the first conductive layer. The second bus assembly is electrically connected to the first conductive layer exposed via the fourth groove.

9. The circular electrochromic film as described in claim 7, characterized in that, The first busbar assembly is covered with a first colloid, and the second busbar assembly is covered with a second colloid; One end of the first colloid is attached to the first base layer, and the other end of the first colloid is attached to the second conductive layer. One end of the second colloid is attached to the second base layer, and the other end of the second colloid is attached to the first conductive layer. Alternatively, one end of the first colloid is attached to the first substrate layer, one end of the second colloid is attached to the second substrate layer, and the other ends of the first colloid and the second colloid extend to the edge of the circular electrochromic film and adhere to each other.

10. An electrochromic glass, characterized in that, It includes a first glass layered together, a circular electrochromic film as described in any one of claims 1 to 9, and a second glass.

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