Control method and device of electrochromic device and electrochromic device

Abstract

The invention is suitable for the technical field of electrochromism, and provides a control method and device of an electrochromic device, a medium, a system, a manufacturing method, the electrochromic device, an electrochromic device and a terminal product. The control method of the electrochromic device comprises the following steps: firstly, acquiring the actual capacity of the color-changing diaphragm or the first transmittance of the color-changing diaphragm when the color-changing diaphragm is charged or discharged to a preset condition, determining the resistance adjustment amount of the color-changing diaphragm needing to be adjusted according to the actual capacity and a theoretical capacity value or according to the first transmittance and a theoretical transmittance, and adjusting the resistance of the color-changing diaphragm according to the resistance adjustment amount. And finally, an adjusting circuit corresponding to the resistance adjustment amount is controlled to be conducted with the color-changing diaphragm. According to the control method of the electrochromic device provided by the embodiment of the invention, the transmittance can be consistent when the electrochromic diaphragms are charged by using the same control logic and control parameters, and the consistency of the electrochromic devices is improved. Visual errors of a user during watching can be reduced, and the visual experience of the user is improved.

Description

Technical Field

[0001] This application belongs to the technical field of electrochromic technology, and particularly relates to a control method, device, medium, system, manufacturing method, electrochromic device, electrochromic device and terminal product of an electrochromic device. Background Art

[0002] An electrochromic device is a special material that can change its color and transparency in response to voltage changes, and is widely used in fields such as architecture, automobiles, and aerospace. However, during the production process of electrochromic devices, the inventor found that due to the existence of system errors such as equipment, the internal resistance of each electrochromic device is different, resulting in different corresponding capacities, and the color change end points of each electrochromic device are inconsistent. When the controller uses the same control logic to control different diaphragms, the transmittance of each electrochromic device is inconsistent, resulting in visual errors for users when viewing, seriously affecting the user's visual experience. Summary of the Invention

[0003] Embodiments of this application provide a control method, device, medium, system, manufacturing method, electrochromic device, electrochromic device and terminal product of an electrochromic device, which are used to solve the problem that the transmittance of each electrochromic device is inconsistent due to the differences in existing color-changing diaphragms.

[0004] In a first aspect, embodiments of this application provide a control method of an electrochromic device, where the electrochromic device includes a color-changing diaphragm and an adjustment circuit with multiple resistance values; the method includes:

[0005] Detect the actual capacity of the color-changing diaphragm or the first transmittance of the color-changing diaphragm when the color-changing diaphragm is charged or discharged to a preset condition;

[0006] Determine the resistance adjustment amount that the color-changing diaphragm needs to be adjusted according to the actual capacity and the theoretical capacity value, or according to the first transmittance and the theoretical transmittance;

[0007] Control the adjustment circuit corresponding to the resistance adjustment amount to conduct with the color-changing diaphragm.

[0008] In the first aspect of this application, embodiments of this application adjust the capacities of each color-changing diaphragm to be consistent by setting an adjustment circuit, so that the transmittances of each color-changing diaphragm reach consistency when charging with the same control logic and control parameters, thereby playing a role in improving the consistency of each color-changing diaphragm. It can reduce visual errors for users when viewing and enhance the user's visual experience.

[0009] In a possible implementation manner of the first aspect, obtaining the actual capacity of the color-changing diaphragm or the first transmittance of the color-changing diaphragm when the color-changing diaphragm is charged or discharged to a preset condition includes:

[0010] Charge or discharge the color-changing film, and detect the real-time current passing through the color-changing film. When the real-time current is less than the preset current, stop charging or discharging the color-changing film;

[0011] Integrate the real-time current during the charging or discharging process of the color-changing film to determine the actual capacity of the color-changing film, and / or detect the first transmittance of the color-changing film.

[0012] In a possible implementation manner of the first aspect, the determining the resistance adjustment amount required for the color-changing film according to the actual capacity and the theoretical capacity value, or according to the first transmittance and the theoretical transmittance, includes:

[0013] Subtract the theoretical capacity value from the actual capacity to obtain an actual capacity difference; or, subtract the theoretical transmittance from the first transmittance to obtain a first transmittance difference;

[0014] Determine the resistance adjustment amount according to the actual capacity difference or the first transmittance difference.

[0015] In a possible implementation manner of the first aspect, before determining the resistance adjustment amount according to the actual capacity difference or the first transmittance difference, it further includes:

[0016] Detect the difference between the capacity when the color-changing film is connected in series with adjustment circuits of different resistance values and the capacity when not connected to the adjustment circuit; or, detect the difference between the transmittance when the color-changing film is connected in series with adjustment circuits of different resistance values and the transmittance when not connected to the adjustment circuit;

[0017] Associate and store each resistance value with the corresponding capacity difference or transmittance difference.

[0018] In a possible implementation manner of the first aspect, the determining the resistance adjustment amount according to the actual capacity difference or the first transmittance difference includes:

[0019] When the actual capacity difference is 0.4 mAh ± 0.05 mAh, determine the corresponding resistance adjustment amount to be 1 Ω;

[0020] and / or,

[0021] The first transmittance difference includes the transmittance difference in the brightest state and / or the transmittance difference in the darkest state. When the transmittance difference in the brightest state is 2.5% ± 0.5%, determine the corresponding resistance adjustment amount to be 1 Ω. When the transmittance difference in the darkest state is 1% ± 0.5%, determine the corresponding resistance adjustment amount to be 1 Ω.

[0022] In a possible implementation of the first aspect, the method further includes:

[0023] Detecting the temperature of the electrochromic film;

[0024] Determining a resistance adjustment amount according to the temperature.

[0025] In a second aspect, an embodiment of the present application provides a control device for an electrochromic device, including:

[0026] A detector, configured to obtain the actual capacity of the electrochromic film or the first transmittance of the electrochromic film when the electrochromic film is charged or discharged to a preset condition;

[0027] A processor, configured to determine a resistance adjustment amount that the electrochromic film needs to be adjusted according to the actual capacity and the theoretical capacity value, or according to the first transmittance and the theoretical transmittance;

[0028] A driver, configured to control a regulation circuit corresponding to the resistance adjustment amount to be conducted with the electrochromic film.

[0029] In the second aspect of the present application, a regulation circuit with a corresponding resistance adjustment amount is connected in series on the electrochromic film to make up for the difference in the internal resistance of the electrochromic film. By setting the regulation circuit, the capacities of the electrochromic films are adjusted to be the same, so that the transmittances of the electrochromic films reach the same when charging with the same control logic and control parameters, thereby improving the consistency of the electrochromic films. It can reduce the visual error when the user is viewing and improve the user's visual experience.

[0030] In a possible implementation of the second aspect, the driver is further configured to: charge or discharge the electrochromic film;

[0031] The detector is further configured to: detect the real-time current passing through the electrochromic film;

[0032] The driver is further configured to: stop charging or discharging the electrochromic film when the real-time current is less than a preset current;

[0033] The processor is further configured to: integrate the real-time current during the charging or discharging process of the electrochromic film to determine the actual capacity of the electrochromic film;

[0034] The detector is further configured to: detect the first transmittance of the electrochromic film.

[0035] In a possible implementation of the second aspect, the processor is further configured to: subtract the actual capacity from the theoretical capacity value to obtain an actual capacity difference; or subtract the first transmittance from the theoretical transmittance to obtain a first transmittance difference; determine the resistance adjustment amount according to the actual capacity difference or the first transmittance difference.

[0036] In a possible implementation of the second aspect, the processor is further configured to:

[0037] Detect the difference between the capacity when the electrochromic film is connected in series with adjustment circuits of different resistances and the capacity when not connected in series with the adjustment circuit; or, detect the difference between the transmittance when the electrochromic film is connected in series with adjustment circuits of different resistances and the transmittance when not connected in series with the adjustment circuit;

[0038] The processor is further configured to: associate and store each resistance value with the corresponding capacity difference or transmittance difference.

[0039] In a possible implementation of the second aspect,

[0040] When the actual capacity difference is 0.4 mAh ± 0.05 mAh, the processor is further configured to determine the corresponding resistance adjustment amount as 1 Ω;

[0041] And / or,

[0042] The first transmittance difference includes the transmittance difference in the brightest state and / or the transmittance difference in the darkest state. When the transmittance difference in the brightest state is 2.5% ± 0.5%, the processor is further configured to determine the corresponding resistance adjustment amount as 1 Ω. When the transmittance difference in the darkest state is 1% ± 0.5%, the processor is further configured to determine the corresponding resistance adjustment amount as 1 Ω.

[0043] In a possible implementation of the second aspect, the detector is further configured to: detect the temperature of the electrochromic film;

[0044] The processor is further configured to: determine the resistance adjustment amount according to the temperature.

[0045] In a third aspect, an embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored. When the computer program runs on an arithmetic unit, it executes the control method of the electrochromic device as described in any one of the first aspect.

[0046] In a fourth aspect, an embodiment of the present application provides a control system for an electrochromic device, including a terminal platform and a control device for an electrochromic device as described in any one of the second aspect. Information interaction is performed between the terminal platform and the control device for the electrochromic device.

[0047] In a fifth aspect, an embodiment of the present application provides a method for manufacturing an electrochromic device, including:

[0048] Detect the actual capacity of the electrochromic film or the first transmittance of the electrochromic film when the electrochromic film is charged or discharged to a preset condition;

[0049] Determining the resistance adjustment amount of the color-changing membrane that needs to be adjusted according to the actual capacity and the theoretical capacity value, or according to the first transmittance and the theoretical transmittance;

[0050] A regulating circuit having a resistance value of the resistance adjustment amount is connected to the color-changing film.

[0051] In the fifth aspect of the present application, an adjustment circuit with a corresponding resistance adjustment amount is connected in series on the color-changing membrane to compensate for the difference in the internal resistance of the color-changing membrane. By setting the adjustment circuit, the capacity of each color-changing membrane is adjusted to be consistent, so that the transmittance of each color-changing membrane is consistent when charged using the same control logic and control parameters, thereby improving the consistency of each color-changing membrane.

[0052] In the sixth aspect, an embodiment of the present application provides an electrochromic device, comprising: a color-changing film and an adjustment circuit; the color-changing film comprises a color-changing film body and a power input terminal for receiving power; the color-changing film body comprises a first conductive substrate, an electrochromic stacking layer and a second conductive substrate stacked in sequence; the adjustment circuit is connected to an end of the power input terminal away from the color-changing film body, and the adjustment circuit is used to adjust the amount of electricity charged into the color-changing film and the amount of electricity released by the color-changing film when charging or discharging the color-changing film.

[0053] In the sixth aspect of the present application, an adjustment circuit with a corresponding resistance value is connected in series in the color-changing membrane to compensate for the difference in the internal resistance of the color-changing membrane. By setting the adjustment circuit, the capacity of each electrochromic device is adjusted to be consistent, so that the transmittance of each electrochromic device is consistent when charging using the same control logic and control parameters, thereby improving the consistency of each electrochromic device. It can reduce visual errors when users are watching and improve the user's visual experience.

[0054] In a possible implementation of the sixth aspect, the electrochromic device further includes a lead-out structure, one end of the lead-out structure is connected to the power input end, and the other end is connected to the power output end, and the regulating circuit is disposed on the lead-out structure.

[0055] In a possible implementation of the sixth aspect, the electrochromic device further includes a first bus bar and a second bus bar;

[0056] The first bus bar electrically connects the color-changing membrane and the first conductive segment, and the second bus bar electrically connects the color-changing membrane and the second conductive segment.

[0057] In a possible implementation manner of the sixth aspect, the adjustment circuit includes at least one first resistor, where the first resistor is connected in series between the first conductive segment and the second conductive segment.

[0058] In a possible implementation of the sixth aspect, the adjustment circuit includes at least one first resistor, and the first resistor is at least one of a slide rheostat, a photoresistor, and a thermistor.

[0059] In a possible implementation of the sixth aspect, the adjustment circuit includes a plurality of switch units and a plurality of voltage dividing units. Each switch unit is electrically connected to at least one voltage dividing unit correspondingly, and at least two voltage dividing units are connected in parallel and then connected in series with the electrochromic film.

[0060] In a possible implementation of the sixth aspect, the resistance values of at least two of the voltage dividing units are not equal.

[0061] In a possible implementation of the sixth aspect, the electrochromic device further includes a controller, and the adjustment circuit is integrated in the circuit board of the controller.

[0062] In a seventh aspect, an embodiment of the present application provides an electrochromic device, including a substrate layer and the electrochromic device according to any one of the fourth aspect, and the substrate layer and the electrochromic device are stacked.

[0063] In the seventh aspect of the present application, the electrochromic device formed by stacking the substrate layer and the electrochromic device can ensure that when the same driving voltage is applied to all electrochromic devices, the transmittance of all electrochromic devices is consistent, reduce the visual error when the user views, and improve the user's visual experience.

[0064] In a possible implementation of the seventh aspect, an encapsulation layer is provided on the outer peripheral edge of the electrochromic film, and the adjustment circuit is accommodated in the encapsulation layer.

[0065] In an eighth aspect, an embodiment of the present application provides a terminal product, including the electrochromic device according to any one of the sixth aspect or the electrochromic device according to any one of the seventh aspect. Among them, the terminal product includes any one of a rearview mirror, a curtain wall, a car sunroof, a car side window, a car windshield, a housing of an electronic product, glasses, a vehicle, or a display panel.

[0066] The beneficial effects of the embodiments of the present application compared with the prior art are:

[0067] The control method of the electrochromic device provided by the embodiment of the present application can make the final electric quantity of the color-changing film reach consistency by using the same charging logic and charging parameters, so as to adjust the capacity of the entire color-changing film to the theoretical capacity value. It is equivalent to connecting an adjustment circuit with a corresponding resistance adjustment amount in series on the color-changing film to make up for the difference in the internal resistance of the color-changing film. By setting the adjustment circuit, the capacities of the color-changing films are adjusted to be consistent, so that when the color-changing films are charged using the same control logic and control parameters, the transmittance reaches consistency, thereby improving the consistency of the color-changing films. It can reduce the visual error when the user is watching and enhance the user's visual experience.

[0068] It can be understood that the beneficial effects of the second to eighth aspects can refer to the relevant descriptions in the first aspect above, and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0070] Figure 1 It is a schematic block diagram of a control device of an electrochromic device provided by an embodiment of the present application;

[0071] Figure 2 It is a corresponding curve of the capacity and resistance value of a color-changing film provided by an embodiment of the present application;

[0072] Figure 3 It is a corresponding curve of the transmittance and resistance value of a color-changing film provided by an embodiment of the present application;

[0073] Figure 4 It is a schematic block diagram of a control system of an electrochromic device provided by an embodiment of the present application;

[0074] Figure 5 It is a schematic flowchart of a control method of an electrochromic device provided by an embodiment of the present application;

[0075] Figure 6 It is a schematic flowchart of a control method of an electrochromic device provided by another embodiment of the present application;

[0076] Figure 7 It is a schematic flowchart of a control method of an electrochromic device provided by another embodiment of the present application;

[0077] Figure 8It is a schematic flowchart of a control method for an electrochromic device provided by another embodiment of the present application;

[0078] Figure 9 It is a schematic block diagram of a computer-readable storage medium and an arithmetic unit provided by an embodiment of the present application;

[0079] Figure 10 It is a schematic flowchart of a manufacturing method for an electrochromic device provided by an embodiment of the present application;

[0080] Figure 11 It is a schematic block diagram of an electrochromic device provided by an embodiment of the present application;

[0081] Figure 12 It is a schematic block diagram of an electrochromic device provided by another embodiment of the present application;

[0082] Figure 13 It is a schematic circuit connection diagram of an adjustment circuit provided by an embodiment of the present application;

[0083] Figure 14 It is a schematic circuit connection diagram of an adjustment circuit provided by another embodiment of the present application;

[0084] Figure 15 It is a schematic block diagram of an electrochromic device provided by an embodiment of the present application.

[0085] In the figure: 100, a control device for an electrochromic device; 1001, a detector; 1002, a processor; 1003, a driver; 400, a terminal platform; 901, a computer-readable storage medium; 902, an arithmetic unit; 10, an electrochromic device; 101, a color-changing film; 1011, a first conductive substrate; 1012, a second conductive substrate; 1013, an electrochromic stack; 102, an adjustment circuit; 1031, a first flexible circuit board; 1032, a second flexible circuit board; 104, a packaging layer; 20, a first glass; 30, a second glass; 40, a packaging layer. Detailed Embodiments

[0086] In the following description, for the purpose of illustration rather than limitation, specific details such as specific system architectures, technologies, etc. are presented to provide a thorough understanding of the embodiments of the present application. However, those skilled in the art should clearly understand that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from interfering with the description of the present application.

[0087] It should be understood that when used in the specification of this application and the appended claims, the term "comprising" indicates the presence of the described features, wholes, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0088] It should also be understood that the term "and / or" used in the specification of this application and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0089] As used in the specification of this application and the appended claims, the term "if" may be construed, depending on the context, as "when" or "once" or "in response to determining" or "in response to detecting". Similarly, the phrase "if determined" or "if [the described condition or event] is detected" may be construed, depending on the context, as meaning "once determined" or "in response to determining" or "once [the described condition or event] is detected" or "in response to detecting [the described condition or event]".

[0090] In addition, in the description of the specification of this application and the appended claims, the terms "first", "second", "third", etc. are only used for differentiating descriptions and cannot be construed as indicating or implying relative importance.

[0091] Reference to "one embodiment" or "some embodiments" or the like described in the specification of this application means that a specific feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of this application. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc. that appear in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "comprising", "including", "having", and their variants all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0092] Electrochromic materials are special materials that can change their color and transparency in response to changes in voltage and are widely used in fields such as architecture, automobiles, and aerospace. However, the inventors found that during the production process of electrochromic devices, due to the existence of system errors such as equipment, the internal resistance of each color-changing film is different, resulting in corresponding different capacitances, and the color-changing end points of each color-changing film are inconsistent. When the controller uses the same control logic to control different films, the transmittance of each electrochromic device is different, resulting in visual errors for users when viewing, seriously affecting the visual experience of users.

[0093] In each embodiment of the present application, the electrochromic device includes a color-changing film and an adjustment circuit with multiple resistance values; the adjustment circuits with multiple different resistance values are independent of each other. Based on the above problems, in the process of controlling the electrochromic device in the embodiments of the present application, first, when detecting that the color-changing film is charged or discharged to a preset condition, the actual capacity of the color-changing film or the first transmittance of the color-changing film is detected. Among them, the actual capacity of the color-changing film can reflect the energy storage capacity of the color-changing film, and the transmittance corresponding to the actual capacity can be determined according to the relationship between the capacity and the transmittance. That is to say, the capacity can be measured electrically to judge whether the optical performance of the color-changing film meets the requirements. The first transmittance can reflect the optical performance of the color-changing film and can also judge whether the optical performance of the electrochromic device can meet the requirements. If the requirements are met, the adjustment circuit with a resistance adjustment amount of 0 is controlled to be conducted with the color-changing film. If the requirements cannot be met, then the resistance adjustment amount to be adjusted is determined according to the actual capacity and the theoretical capacity value of the electrochromic device or according to the first transmittance and the theoretical transmittance. After the resistance adjustment amount is determined, the adjustment circuit corresponding to the resistance adjustment amount is controlled to be conducted with the color-changing film. Since the resistance adjustment amount is determined according to the actual capacity and the theoretical capacity value or according to the first transmittance and the theoretical transmittance, the adjustment circuit with the resistance adjustment amount is connected in series with the color-changing film to realize voltage division, which can play a role in voltage division during the charging or discharging process of the color-changing film, and then adjust the amount of charge charged into the color-changing film and the amount of charge released by the color-changing film. By using the same charging logic and charging parameters, the final charge of the color-changing film can be made consistent, so as to adjust the capacity of the entire color-changing film to the theoretical capacity value. It is equivalent to connecting a series adjustment circuit with a corresponding resistance adjustment amount to the color-changing film to make up for the difference in the internal resistance of the color-changing film. By setting the adjustment circuit, the capacities of the electrochromic devices are adjusted to be consistent, so that the transmittances of the color-changing films reach the same when they are charged with the same control logic and control parameters, thus playing a role in improving the consistency of the color-changing films. It can reduce the visual error when the user watches and improve the user's visual experience. In addition, since the capacities of all the color-changing films are adjusted to a preset range by connecting the adjustment circuits in series during the production process, that is, the capacities of the electrochromic devices with large capacity deviations can be calibrated to the standard capacity range, the defective rate of the products can be greatly reduced.

[0094] In order to illustrate the technical solutions described in the present application, the following will be described through specific embodiments.

[0095] Figure 1 FIG. shows a schematic block diagram of a control device 100 for an electrochromic device provided in an embodiment of the present application. The electrochromic device includes a color-changing film and an adjustment circuit with multiple resistance values; see Figure 1As shown, the control device 100 of the electrochromic device includes a detector 1001 for obtaining the actual capacity of the color-changing film or the first transmittance of the color-changing film when the color-changing film is charged or discharged to a preset condition; a processor 1002 for determining the resistance adjustment amount that the color-changing film needs to be adjusted according to the actual capacity and the theoretical capacity value, or according to the first transmittance and the theoretical transmittance; and a driver 1003 for controlling the adjustment circuit corresponding to the resistance adjustment amount to be conducted with the color-changing film.

[0096] Specifically, when the detector 1001 detects that the color-changing film is charged or discharged to a preset condition, the actual capacity of the color-changing film or the first transmittance of the color-changing film can detect the electrical parameters or optical parameters of the color-changing film to characterize the information about the energy storage capacity and optical performance of the color-changing film, and transmit the relevant information of the actual capacity and the first transmittance to the processor 1002. The actual capacity reflects the energy storage capacity of the color-changing film. According to the relationship between the capacity and the transmittance, the transmittance corresponding to the actual capacity can be determined. That is to say, the capacity can be measured electrically to judge whether the optical performance of the color-changing film meets the requirements. The first transmittance reflects the optical performance of the color-changing film, and it can also judge whether the optical performance of the color-changing film can meet the requirements. By obtaining the actual capacity and the first transmittance of the color-changing film, the state of the color-changing film can be monitored in real time, so as to perform corresponding adjustment and control to improve the energy utilization efficiency.

[0097] Among them, the above preset conditions include at least one of the following: 1. When charging or discharging for a preset time, the current value reaches a preset value. Exemplarily, after charging or discharging for 5 seconds, the current value drops to 40 mA; 2. Fully charging or discharging the color-changing film. Exemplarily, full charging can be considered as charging from the lowest transmittance of the color-changing film to the highest transmittance, or vice versa. Full discharging can be considered as charging from the highest transmittance of the color-changing film to the lowest transmittance. 3. Charging or discharging reaches a preset duration. Exemplarily, such as 120 s. 4. Charging or discharging to a preset gear and a preset transmittance. The exemplary values in the embodiments of the present application are only examples, and the values will vary according to the materials, areas, etc. of the color-changing films.

[0098] The actual capacity of the color-changing film can be determined by measuring the capacitance of the color-changing film and according to the corresponding table between the capacitance and the energy storage charge amount; the actual capacity of the color-changing film can also be determined by measuring the current during the charging and discharging process of the color-changing film and according to the product of the current and time; the actual capacity of the color-changing film can also be obtained by measuring the impedance of the color-changing film at different frequencies, obtaining the frequency response curve, and deriving the capacity of the color-changing film according to the characteristics of the frequency response curve.

[0099] One or more transmittance sensors can be set at all four corners of the color-changing film, or one or more transmittance sensors can be set at two corners on the diagonal of the color-changing film. Such a setting can more comprehensively detect the transmittance of the color-changing film. When the voltage between the two electrodes of the color-changing film reaches the first preset voltage, that is, when the color-changing film is in a stable state, at this time, the light intensity passing through the color-changing film can be measured by the transmittance sensor and converted into a specific transmittance value. Taking the average value of all transmittance values can obtain the first transmittance of the color-changing film. The first transmittance can also be obtained by testing with a transmittance meter placed at the center of the color-changing film; a photosensitive element (such as a photodiode or a photovoltaic cell) can also be used to measure the change difference in the light intensity passing through the color-changing film, so as to obtain the first transmittance.

[0100] It should be noted that due to the obvious difference in the capacitance of the color-changing film at high temperatures and the insignificant difference in the capacitance of the color-changing film at low or normal temperatures. Therefore, when detecting the actual capacitance and the first transmittance, the detection is generally carried out at high temperatures. If the capacitance of each color-changing film can be made consistent at high temperatures, and the capacitance of each color-changing film can also be made consistent at low temperatures, detecting the actual capacitance and the first transmittance at high temperatures can improve the detection accuracy. Generally, 0 - 50 °C can be set as low or normal temperature, and 50 °C - 85 °C can be set as high temperature.

[0101] Specifically, the processor 1002 determines the resistance adjustment amount that the color-changing film needs to be adjusted by according to the actual capacitance and the theoretical capacitance value of the color-changing film, and then by referring to the corresponding relationship table or relationship curve of the actual capacitance, the theoretical capacitance value and the resistance. Or it can also be determined by according to the first transmittance and the theoretical transmittance of the color-changing film, and then by referring to the corresponding relationship table or relationship curve of the first transmittance, the theoretical transmittance and the resistance.

[0102] Specifically, after the processor 1002 determines the resistance adjustment amount, the driver 1003 controls the adjustment circuit corresponding to the resistance adjustment amount to conduct with the color-changing diaphragm. Since the resistance adjustment amount is determined according to the actual capacity and the theoretical capacity value or according to the first transmittance and the theoretical transmittance, the adjustment circuit with the resistance value of the resistance adjustment amount is connected in series with the color-changing diaphragm to achieve voltage division, which can play a role in voltage division during the charging or discharging process of the color-changing diaphragm, thereby adjusting the amount of electricity charged into the color-changing diaphragm and the amount of electricity released by the color-changing diaphragm. By using the same charging logic and charging parameters, the final amount of electricity of the color-changing diaphragm can be made consistent, so as to adjust the capacity of the entire color-changing diaphragm to the theoretical capacity value. It is equivalent to connecting an adjustment circuit with a corresponding resistance adjustment amount in series on the color-changing diaphragm to make up for the difference in the internal resistance of the color-changing diaphragm. By setting the adjustment circuit, the capacities of the color-changing diaphragms are adjusted to be consistent, so that when the color-changing diaphragms are charged using the same control logic and control parameters, the transmittances reach consistency, thereby improving the consistency of the color-changing diaphragms. It can reduce the visual error when the user is viewing and enhance the user's visual experience. In addition, since all the color-changing diaphragms are adjusted to the preset range by connecting the adjustment circuit in series during the production process, that is, the capacities of the color-changing diaphragms with large capacity deviations can be calibrated to the standard capacity range, the defective rate of the product can be greatly reduced.

[0103] In an embodiment of the present application, the driver 1003 is further configured to: charge or discharge the color-changing diaphragm. The detector 1001 is further configured to: detect the real-time current passing through the color-changing diaphragm. The processor 1002 is further configured to: stop charging or discharging the color-changing diaphragm when the real-time current is less than a preset current.

[0104] Specifically, the driver 1003 charges or discharges the color-changing diaphragm, and the driver 1003 is a driving circuit. The power supply of the driver 1003 is conducted with the color-changing diaphragm. As the color-changing diaphragm is charged or discharged, the current passing through the color-changing diaphragm will gradually decrease and tend to be stable. During the process of current change, the real-time current flowing through the color-changing diaphragm can be detected, so as to realize the real-time monitoring and control of the capacity of the color-changing diaphragm. At the same time, detecting the real-time current passing through the color-changing diaphragm can also obtain the resistance value of the color-changing diaphragm. By detecting the change of the resistance value, the change of the capacity of the color-changing diaphragm can be deduced, so as to realize the real-time monitoring and control of the change of the capacity of the color-changing diaphragm.

[0105] Exemplarily, a designer can select a suitable method to detect the real-time current according to the actual situation. For example, a current sensor can be used to measure the real-time current passing through the color-changing diaphragm. The current sensor can be directly connected to the current path flowing through the color-changing diaphragm to monitor the current value in real time by sensing the magnitude and direction of the current. For example, common current sensors can be Hall effect sensors, resistance sensors, inductance sensors, etc. An ammeter or a galvanometer can also be connected to the current path flowing through the color-changing diaphragm, and the current value can be directly read using the display screen of the ammeter or the galvanometer.

[0106] When the real-time current passing through the color-changing diaphragm is less than the preset current, that is, the current flowing through the color-changing diaphragm tends to be stable, which indicates that the voltage between the two conductive substrates (the first conductive substrate and the second conductive substrate) of the color-changing diaphragm has reached stability. At this time, the state of the capacity inside the color-changing diaphragm being empty or full reflects the actual capacity size of the color-changing diaphragm.

[0107] Exemplarily, a designer can set the preset current according to the actual situation. If a current sensor is used to detect the real-time current flowing through the color-changing diaphragm, the preset current can be set at the set threshold interface of the current sensor. For example, the preset current can be set to 50 mA. When the current sensor detects that the real-time current flowing through the color-changing diaphragm is less than 50 mA, the charging or discharging of the color-changing diaphragm is stopped to avoid overcharging or over-discharging the color-changing diaphragm.

[0108] In an embodiment of the present application, the processor 1002 is further configured to: integrate the real-time current during the charging or discharging process of the color-changing diaphragm to determine the actual capacity of the color-changing diaphragm. The detector 1001 is further configured to: detect the first transmittance of the color-changing diaphragm.

[0109] Specifically, after receiving the real-time current detected by the detector 1001, the processor 1002 integrates the real-time current to obtain the actual capacity of the color-changing diaphragm. Since the current flowing through the color-changing diaphragm is continuous, the actual capacity (equivalent to the amount of charge charged into the color-changing diaphragm or the amount of charge released from the color-changing diaphragm) is equal to the product of the current flowing through the color-changing diaphragm and the time corresponding to the detection of the real-time current. At this time, when the color-changing diaphragm is fully charged and / or fully discharged, the first transmittance of the color-changing diaphragm can also be detected.

[0110] It should be noted that since the transmittance of the color-changing film varies with the change in voltage between the two conductive substrates, when different voltages are applied between the two electrodes, the electric field strength will affect the degree of structural change of the materials inside the color-changing film, thereby affecting the transmittance. When the open-circuit voltage of the color-changing film is equal to the first preset open-circuit voltage within a preset time, it indicates that the electric field strength has reached the preset value. At this time, the color-changing film has reached a stable state, and a transmittance sensor can be used to detect the transmittance of the color-changing film at the first preset open-circuit voltage to obtain the first transmittance of the color-changing film. At this time, the first transmittance is the transmittance corresponding to the full charge and full discharge of the color-changing film.

[0111] It should be noted that full charge means that the color-changing film is charged from the lowest gear (highest gear) to the highest gear (lowest gear), or from the lowest transmittance (highest transmittance) within the transmittance range to the highest transmittance (lowest transmittance), or after applying a voltage to the color-changing film for a preset time, detecting that the charging current magnitude decreases to the preset value and stopping charging; full discharge means that the color-changing film is discharged from the highest gear (lowest gear) to the lowest gear (highest gear), or from the highest transmittance (lowest transmittance) within the transmittance range to the lowest transmittance (highest transmittance), or after discharging the color-changing film for a preset time, detecting that the charging current magnitude decreases to the preset value and stopping discharging.

[0112] Exemplarily, if it is set that the current sensor detects the real-time current flowing through the color-changing film once per second, at a certain moment, the detected real-time current is 100 mA, and at this time, the corresponding time is 0.1 h, then the actual capacity of the color-changing film can be obtained as 100 mA * 0.1 h = 10 mAh.

[0113] It should be noted that this application can also use a capacitor for cut-off. Specifically, by obtaining the real-time current and integrating the real-time current to obtain the actual capacity of the color-changing film, if the actual capacity reaches the preset capacity, the cut-off can be triggered to stop adjusting or controlling the color-changing film. The charging process of the capacitor can be used to monitor the capacity of the color-changing film. When the actual capacity of the color-changing film reaches the preset capacity, the cut-off operation can be performed.

[0114] Exemplarily, in the above steps of detecting the actual capacity of the color-changing film, the charge-discharge logic can be set according to the transmittance range required by the user for the product, so as to obtain the actual capacity of the color-changing film. For example, if the user requires the transmittance range of the product to be 10% - 50%, the discharge logic can be set as constant voltage discharge at -0.7 V until the current decreases to 50 mA and stop discharging the color-changing film. The charging logic can be set as constant voltage charging at 0.7 V until the current decreases to 50 mA and stop charging the color-changing film. The real-time current can be tested in a cycling cabinet and integrated to obtain the actual capacity of the color-changing film.

[0115] In one embodiment of the present application, the processor 1002 is further configured to: subtract the actual capacity from the theoretical capacity value to obtain an actual capacity difference; or subtract the first transmittance from the theoretical transmittance to obtain a first transmittance difference.

[0116] In some preferred embodiments, the processor 1002 performs a subtraction operation on the actual capacity and the theoretical capacity value to obtain the difference between the two capacities. The difference between the two capacities can be the difference obtained by subtracting the theoretical capacity value from the actual capacity, or the difference obtained by subtracting the actual capacity from the theoretical capacity value. The differences obtained in both cases can be used as the actual capacity difference. If the actual capacity is equal to the theoretical capacity value, that is, the difference between the two capacities is zero or within a preset range, at this time, there is no need to adjust the capacity of the color-changing film.

[0117] In some preferred embodiments, the processor 1002 performs a subtraction operation on the first transmittance and the theoretical transmittance to obtain the difference between the two transmittances. The difference between the two transmittances can be the difference obtained by subtracting the theoretical transmittance from the first transmittance, or the difference obtained by subtracting the first transmittance from the theoretical transmittance. The differences obtained in both cases can be used as the first transmittance difference. If the first transmittance is equal to the theoretical transmittance, that is, the difference between the two transmittances is zero or within a preset range, at this time, there is no need to adjust the transmittance of the color-changing film.

[0118] It should be noted that the theoretical capacity value can be obtained by referring to the parameter data table of the temperature and theoretical capacity value of the color-changing film. The temperature-theoretical capacity value relationship can be a corresponding relationship table between the ambient temperature and the theoretical capacity value, or a relationship curve. Generally, the theoretical capacity value at high temperature (50°C - 85°C) is set to 3.5 mAh, and the theoretical capacity value at low temperature (0 - 50°C) is set to 4.8 mAh.

[0119] Exemplarily, if the current ambient temperature (detection temperature) is 65°C, the detected actual capacity is 4.5 mAh, and the theoretical capacity value is 3.5 mAh. At this time, the difference between the actual capacity and the theoretical capacity value is 1 mAh, that is, the actual capacity difference is 1 mAh.

[0120] It should be noted that the theoretical transmittance can be obtained by referring to the data table of the capacity and theoretical transmittance of the color-changing film. The capacity-theoretical transmittance relationship can be a corresponding relationship table between the capacity of the color-changing film and the theoretical transmittance, or a relationship curve. Generally, the set theoretical transmittance is 50%.

[0121] Exemplarily, if the set theoretical transmittance is 50%, and the detected first transmittance is 51%, it can be known therefrom that the difference between the first transmittance and the theoretical transmittance is 1%, that is, the first transmittance difference is 1%. If the detected first transmittance is 48%, it can be known therefrom that the difference between the first transmittance and the theoretical transmittance is 2%, that is, the first transmittance difference is 2%.

[0122] The processor 1002 is further configured to: determine a resistance adjustment amount according to the actual capacity difference or the first transmittance difference.

[0123] Specifically, when the processor 1002 determines the resistance adjustment amount according to the actual capacity difference, specifically: after the processor 1002 obtains the actual capacity difference, the resistance adjustment amount can be calculated by a formula, or the resistance adjustment amount can be obtained by referring to a capacity difference-resistance adjustment amount correspondence table or relationship curve of the actual capacity difference and the resistance adjustment amount.

[0124] The processor 1002 is further configured to: detect the difference between the capacity when the color-changing film is connected in series with adjustment circuits of different resistance values and the capacity when not connected in series with the adjustment circuit. The processor 1002 is further configured to: associate and store each resistance value and the corresponding capacity difference in a storage. That is, the color-changing film further includes a storage, and a relationship table of the resistance value and the capacity difference is pre-stored in the storage. The relationship between the resistance value and the capacity difference can be obtained through experiments.

[0125] Specifically, before determining the resistance adjustment amount according to the actual capacity difference, an adjustment circuit formed by parallel connection of multiple (for example, 3) resistors with different resistance values can be selected and connected in series with the color-changing film. The detector 1001 tests the capacity difference corresponding to the color-changing film connected in series with adjustment circuits of different resistance values, and associates and stores each resistance value and the corresponding capacity difference. The processor 1002 can determine the resistance adjustment amount corresponding to the capacity with the smallest difference from the theoretical capacity value according to the relationship between each resistance value and the capacity difference stored in the database.

[0126] It should be explained that the capacity difference is the difference between the capacity when the color-changing film is connected in series with the adjustment circuit and the capacity when the color-changing film is not connected in series with the adjustment circuit.

[0127] In an embodiment of the present application, if the current ambient temperature (detection temperature) is 65 °C, the processor 1002 is further configured to determine the corresponding theoretical capacity value as 3.5 mAh. When the detected actual capacity difference of the color-changing film is 0.4 mAh ± 0.05 mAh, by referring to the actual capacity difference-resistance adjustment amount correspondence table, the corresponding resistance adjustment amount can be obtained as 1 Ω, and for every difference of 0.4 mAh ± 0.05 mAh in the actual capacity difference, the corresponding resistance adjustment amount is 1 Ω.

[0128] Determine the resistance adjustment amount according to the first transmittance difference. Specifically, after obtaining the first transmittance difference, the resistance adjustment amount can be calculated through a formula, or can be obtained by referring to the transmittance difference-resistance adjustment amount corresponding relationship table or relationship curve of the first transmittance difference and the resistance adjustment amount.

[0129] The processor 1002 is further configured to: detect the difference between the transmittance when the electrochromic film is connected in series with adjustment circuits of different resistances and the transmittance when not connected in series with the adjustment circuit, and the processor 1002 is further configured to: associate and store each resistance value and the corresponding transmittance difference.

[0130] Specifically, before determining the resistance adjustment amount according to the first transmittance difference, an adjustment circuit formed by paralleling multiple (for example, 3) resistances with different resistance values can be selected and connected in series with the electrochromic film. The detector 1001 tests the transmittance difference when the electrochromic film is connected in series with adjustment circuits of different resistance values, and associates and stores each resistance value and the corresponding transmittance difference in the storage. The processor 1002 can determine the resistance adjustment amount corresponding to the transmittance with the smallest difference from the theoretical transmittance according to the relationship between each resistance value and the transmittance difference stored in the database.

[0131] It should be explained that the transmittance difference is the difference between the transmittance when the electrochromic film is connected in series with the adjustment circuit and the transmittance when the electrochromic film is not connected in series with the adjustment circuit.

[0132] In an embodiment of the present application, the first transmittance difference includes the maximum brightness state transmittance difference and / or the minimum brightness state transmittance difference. If the theoretical transmittance range of the electrochromic film is set to 10%-50%, when the maximum brightness state transmittance difference is 2.5%±0.5%, the processor 1002 is further configured to: by referring to the transmittance difference-resistance adjustment amount corresponding relationship table, determine the corresponding resistance adjustment amount as 1Ω. When the minimum brightness state transmittance difference is 1%±0.5%, the processor 1002 is further configured to: by referring to the transmittance difference-resistance adjustment amount corresponding relationship table, determine the obtained corresponding resistance adjustment amount as 1Ω.

[0133] In other embodiments, the theoretical transmittance range of the electrochromic device can also be set. For example, after integrating the electrochromic device on the glass, the lower limit of the theoretical transmittance of the entire electrochromic device can be set to 1.4%-1.5%, and the upper limit of the theoretical transmittance can be set to 7%-7.1%. If the detected lower limit of the first transmittance is 1.3%, at this time, the transmittance needs to be adjusted by 0.1%, and the processor 1002 is further configured to: by referring to the transmittance-resistance adjustment amount corresponding relationship table, determine the corresponding resistance adjustment amount as 1Ω.

[0134] It should be noted that the designer can also obtain the initial transmittance of the color-changing film and determine the resistance adjustment amount according to the size of the initial transmittance. Specifically, there is a certain relationship among the resistance adjustment amount, the initial transmittance, and the first transmittance. When the initial transmittance is different, the transmittance changed by the adjustment circuit of the resistance adjustment amount is different; when the initial transmittance is the same, the transmittance changed by the adjustment circuit of the resistance adjustment amount is the same. Therefore, the resistance adjustment amount can be determined by obtaining the difference between the initial transmittance and the first transmittance.

[0135] Specifically, for the corresponding curve of the capacitance and the resistance value, refer to Figure 2 as shown. For the corresponding curve of the transmittance and the resistance value, refer to Figure 3 as shown. From Figure 2 it can be seen that as the resistance value of the adjustment circuit connected in series with the color-changing film increases, the capacitance of the color-changing film gradually decreases. Through calculation, it can be obtained that when the resistance value increases by 1Ω, the capacitance decreases by about 0.4 mAh. From Figure 3 it can be seen that as the resistance value of the adjustment circuit connected in series with the color-changing film increases, the transmittance range of the color-changing film gradually decreases. Among them, when the resistance value increases by 1Ω, the transmittance in the brightest state decreases by about 2.7%, and the transmittance in the darkest state increases by about 1.2%. It can be seen from this that as the resistance value gradually increases, the capacitance of the color-changing film gradually decreases, and the transmittance range of the color-changing film narrows. Therefore, during the color-changing process of the color-changing film, the loss degree of the internal materials and structures of the color-changing film can be reduced, and the switching between different transmittance states is more stable and controllable, improving the product cycle life.

[0136] In an embodiment of the present application, the detector 1001 is further configured to: detect the temperature of the color-changing film.

[0137] Specifically, a temperature sensor is used to detect the temperature of the color-changing film. The performance of the color-changing film may vary at different temperatures, and the corresponding capacitance is also different. Therefore, by detecting the temperature, the temperature information of the color-changing film in the current environment can be obtained, and then the resistance adjustment amount suitable for this temperature can be determined to achieve precise adjustment of the capacitance of the color-changing film.

[0138] Exemplarily, one or more temperature sensors can be arranged at all four corners of the color-changing film, or one or more temperature sensors can be arranged at two corners on the diagonal of the color-changing film. Such an arrangement can detect the temperature of the color-changing film more comprehensively.

[0139] In an embodiment of the present application, the processor 1002 is further configured to: determine the resistance adjustment amount according to the temperature.

[0140] Specifically, the relationship between the temperature and the resistance adjustment amount can be pre-stored in a memory. After obtaining the temperature of the electrochromic film, the resistance adjustment amount can be calculated through a formula, or obtained by referring to a corresponding relationship table or curve of the temperature-resistance adjustment amount. In addition, the capacitance of the electrochromic film can be determined through a corresponding relationship table of the temperature and capacitance, and then the resistance adjustment amount can be determined according to a corresponding relationship table or curve of the capacitance and the resistance adjustment amount.

[0141] Figure 4 FIG. 4 shows a schematic block diagram of a control system of an electrochromic device provided in an embodiment of the present application. As Figure 4 shown, the control system of the electrochromic device may include a terminal platform 400 and the above-mentioned control device 100 of the electrochromic device. Among them, information interaction is carried out between the terminal platform 400 and the control device 100 of the electrochromic device.

[0142] Among them, the type of the terminal platform 400 is not particularly limited. In some embodiments, the terminal platform 400 may include a remote control, a mobile terminal device, or a central control system of a vehicle, etc.

[0143] In some embodiments, the terminal platform 400 may perform information interaction with the processor 1002 in the control device 100 of the electrochromic device. Exemplarily, the terminal platform 400 may send a control instruction, and the processor 1002 may receive the control instruction. In other embodiments, the terminal platform 400 may also perform information interaction with the driver 1003 in the control device 100 of the electrochromic device. Exemplarily, the driver 1003 may send a completion signal, and the terminal platform 400 may receive the completion signal. Thus, through the information interaction between the terminal platform 400 and the control device 100 of the electrochromic device, the control device 100 of the electrochromic device can be regulated through the terminal platform 400, etc.

[0144] In the embodiments provided in the present application, it should be understood that the disclosed systems and devices can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the devices is only a logical function division. In actual implementation, they can be fully or partially integrated into a physical entity, physically separated, or there can be other division methods. For example, multiple devices or units can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the displayed or discussed coupling or direct coupling or communication connection to each other can be an indirect coupling or communication connection through some interfaces, devices or components, and can be in an electrical or other form.

[0145] Figure 5The figure shows a schematic flow chart of a control method for an electrochromic device provided by an embodiment of the present application. Refer to Figure 5 As shown, the control method 100 of the electrochromic device includes steps S101 to S103.

[0146] Step S101: Obtain the actual capacity of the color-changing film or the first transmittance of the color-changing film when the color-changing film is charged or discharged to a preset condition.

[0147] Specifically, by detecting the actual capacity of the color-changing film or the first transmittance of the color-changing film when the color-changing film is charged or discharged to a preset condition, the electrical parameters or optical parameters of the color-changing film can be detected to characterize the information about the energy storage capacity and optical performance of the color-changing film. The actual capacity reflects the energy storage capacity of the color-changing film. According to the relationship between the capacity and the transmittance, the transmittance corresponding to the actual capacity can be determined. That is, the capacity can be measured electrically to judge whether the optical performance of the color-changing film meets the requirements. The first transmittance reflects the optical performance of the color-changing film, and it can also judge whether the optical performance of the color-changing film can meet the requirements. By obtaining the actual capacity and the first transmittance of the color-changing film, the state of the color-changing film can be monitored in real time, so as to perform corresponding adjustment and control, and improve the energy utilization efficiency.

[0148] Among them, the above preset conditions include at least one of the following: 1. When charging or discharging for a preset time, the current value reaches a preset value. Exemplarily, after charging or discharging for 5 seconds, the current value drops to 40 mA; 2. Fully charging or fully discharging the color-changing film. Exemplarily, full charge can be considered as charging from the lowest transmittance of the color-changing film to the highest transmittance, or vice versa. Full discharge can be considered as charging from the highest transmittance of the color-changing film to the lowest transmittance. 3. Charging or discharging reaches a preset duration. Exemplarily, such as 120 s. 4. Charging or discharging to a preset gear and a preset transmittance. The exemplary values in the embodiments of the present application are only examples, and the values will vary according to the material, area, etc. of the color-changing film.

[0149] The actual capacity of the color-changing film can be determined by measuring the capacitance of the color-changing film and according to the corresponding table between the capacitance and the energy storage charge amount; the actual capacity of the color-changing film can also be determined by measuring the current during the charging and discharging process of the color-changing film and according to the product of the current and time; the actual capacity of the color-changing film can also be obtained by measuring the impedance of the color-changing film at different frequencies, obtaining the frequency response curve, and deriving the capacity of the color-changing film according to the characteristics of the frequency response curve.

[0150] One or more transmittance sensors can be provided at each of the four corners of the color-changing film element, or one or more transmittance sensors can be provided at two corners on the diagonal of the color-changing film. Such a setting can more comprehensively detect the transmittance of the color-changing film. When the voltage between the two electrodes of the color-changing film reaches the first preset voltage, that is, when the color-changing film is in a stable state, at this time, the light intensity passing through the color-changing film can be measured by the transmittance sensor and converted into a specific transmittance value. Taking the average value of all transmittance values can obtain the first transmittance of the color-changing film. The first transmittance can also be obtained by testing with a transmittance meter placed at the center of the color-changing film; a photosensitive element (such as a photodiode or a photovoltaic cell) can also be used to measure the change difference in the light intensity passing through the color-changing film, so as to obtain the first transmittance.

[0151] It should be noted that due to the obvious difference in the capacitance of the color-changing film at high temperatures, the capacitance difference of the color-changing film at low or normal temperatures is not obvious. Therefore, when detecting the actual capacitance and the first transmittance, the detection is generally carried out at high temperatures. If the capacitance of each color-changing film can be made consistent at high temperatures, and the capacitance of each color-changing film can also be made consistent at low temperatures, detecting the actual capacitance and the first transmittance at high temperatures can improve the detection accuracy. Generally, 0-50°C can be set as low or normal temperature, and 50°C-85°C can be set as high temperature.

[0152] See Figure 6 As shown, step S101 includes steps S1011 to S1012.

[0153] Step S1011, charge or discharge the color-changing film and detect the real-time current passing through the color-changing film. When the real-time current is less than the preset current, stop charging or discharging the color-changing film.

[0154] Specifically, charge or discharge the color-changing film. As the color-changing film is charged or discharged, the current passing through the color-changing film will gradually decrease and tend to be stable. During the process of current change, the real-time current flowing through the color-changing film can be detected, so as to realize the real-time monitoring and control of the capacitance of the color-changing film. At the same time, detecting the real-time current passing through the color-changing film can also obtain the resistance value of the color-changing film. By detecting the change of the resistance value, the change of the capacitance of the color-changing film can be deduced, so as to realize the real-time monitoring and control of the change of the capacitance of the color-changing film.

[0155] Exemplarily, the designer can select a suitable method to detect the real-time current according to the actual situation. For example, a current sensor can be used to measure the real-time current passing through the color-changing diaphragm. The current sensor can be directly connected to the current path flowing through the color-changing diaphragm, and the current value can be monitored in real time by sensing the magnitude and direction of the current. For example, common current sensors can be Hall effect sensors, resistance sensors, inductance sensors, etc. An ammeter or a galvanometer can also be connected to the current path flowing through the color-changing diaphragm, and the current value can be directly read using the display screen of the ammeter or the galvanometer.

[0156] When the real-time current passing through the color-changing diaphragm is less than the preset current, that is, the current flowing through the color-changing diaphragm tends to be stable, which indicates that the voltage between the two conductive substrates (the first conductive substrate and the second conductive substrate) of the color-changing diaphragm has reached stability. At this time, the state of the capacity inside the color-changing diaphragm being empty or full reflects the actual capacity size of the color-changing diaphragm.

[0157] Exemplarily, the designer can set the preset current according to the actual situation. If a current sensor is used to detect the real-time current flowing through the color-changing diaphragm, the preset current can be set at the setting threshold interface of the current sensor. For example, the preset current can be set to 50 mA. When the current sensor detects that the real-time current flowing through the color-changing diaphragm is less than 50 mA, the charging or discharging of the color-changing diaphragm is stopped to avoid overcharging or over-discharging the color-changing diaphragm.

[0158] Step S1012, integrate the real-time current during the charging or discharging process of the color-changing diaphragm to determine the actual capacity of the color-changing diaphragm, and / or detect the first transmittance of the color-changing diaphragm.

[0159] Specifically, after the real-time current is detected, integrating the real-time current can obtain the actual capacity of the color-changing diaphragm. Since the flowing current is continuous, the actual capacity (equivalent to the electric charge charged into the color-changing diaphragm or the electric charge released from the color-changing diaphragm) is equal to the product of the current flowing through the color-changing diaphragm and the time corresponding to the detection of the real-time current. At this time, the color-changing diaphragm is fully charged and / or fully discharged, and the first transmittance of the color-changing diaphragm can also be detected.

[0160] It should be noted that since the transmittance of the color-changing diaphragm changes with the change of the voltage between the two conductive substrates, when different voltages are applied between the two electrodes, the electric field strength will affect the degree of structural change of the material inside the color-changing diaphragm, thereby affecting the transmittance. When it is detected that the open-circuit voltage of the color-changing diaphragm is equal to the first preset open-circuit voltage within the preset time, it indicates that the electric field strength has reached the preset value. At this time, the color-changing diaphragm has reached a stable state, and a transmittance sensor can be used to detect the transmittance of the color-changing diaphragm at the first preset open-circuit voltage to obtain the first transmittance of the color-changing diaphragm. At this time, the first transmittance is the transmittance corresponding to the full charge and full discharge of the color-changing diaphragm.

[0161] It should be noted that full charge means that the electrochromic film is charged from the lowest gear (highest gear) to the highest gear (lowest gear), or from the lowest transmittance (highest transmittance) within the transmittance range to the highest transmittance (lowest transmittance), or after applying a voltage to the electrochromic film for a preset time, detecting that the charging current magnitude decreases to a preset value and stopping the charging; full discharge means that the electrochromic film is discharged from the highest gear (lowest gear) to the lowest gear (highest gear), or from the highest transmittance (lowest transmittance) within the transmittance range to the lowest transmittance (highest transmittance), or after discharging the electrochromic film for a preset time, detecting that the charging current magnitude decreases to a preset value and stopping the discharging.

[0162] Exemplarily, if it is set that the current sensor detects the real-time current flowing through the electrochromic film once per second, at a certain moment, the detected real-time current is 100 mA, and at this time, the corresponding time is 0.1 h, the actual capacity of the electrochromic film can be obtained as 100 mA * 0.1 h = 10 mAh.

[0163] It should be noted that the present application can also use a capacitor for cut-off. Specifically, by obtaining the real-time current, integrating the real-time current to obtain the actual capacity of the electrochromic film. If the actual capacity reaches the preset capacity, cut-off can be triggered to stop adjusting or controlling the electrochromic film. The charging process of the capacitor can be used to monitor the capacity of the electrochromic film. When the actual capacity of the electrochromic film reaches the preset capacity, the cut-off operation can be performed.

[0164] Exemplarily, in the above steps of detecting the actual capacity of the electrochromic film, the charge-discharge logic can be set according to the transmittance range required by the user for the product, so as to obtain the actual capacity of the electrochromic film. For example, if the user requires the transmittance range of the product to be 10% - 50%, the discharge logic can be set as constant voltage discharge at -0.7 V until the current decreases to 50 mA and stop discharging the electrochromic film. The charging logic can be set as constant voltage charging at 0.7 V until the current decreases to 50 mA and stop charging the electrochromic film. The real-time current can be tested and integrated in the cycling cabinet, so as to obtain the actual capacity of the electrochromic film.

[0165] Step S102, determine the resistance adjustment amount that the electrochromic film needs to be adjusted according to the actual capacity and the theoretical capacity value, or according to the first transmittance and the theoretical transmittance.

[0166] Specifically, based on the actual capacity and theoretical capacity value of the color-changing diaphragm, by referring to the corresponding relationship table or curve of the actual capacity, theoretical capacity value, and resistance, the resistance adjustment amount that the color-changing diaphragm needs to be adjusted can be determined. Alternatively, based on the first transmittance and theoretical transmittance of the color-changing diaphragm, by referring to the corresponding relationship table or curve of the first transmittance, theoretical transmittance, and resistance, the resistance adjustment amount that the color-changing diaphragm needs to be adjusted can be determined.

[0167] As Figure 7 shown, step S102 includes steps S1021 to S1022.

[0168] Step S1021, subtract the theoretical capacity value from the actual capacity to obtain the actual capacity difference. Alternatively, subtract the theoretical transmittance from the first transmittance to obtain the first transmittance difference.

[0169] Specifically, in some preferred embodiments, perform a subtraction operation on the actual capacity and the theoretical capacity value to obtain the difference between the two capacities. The difference between the two capacities can be the difference obtained by subtracting the theoretical capacity value from the actual capacity, or the difference obtained by subtracting the actual capacity from the theoretical capacity value. The differences obtained in both cases can be used as the actual capacity difference. If the actual capacity is equal to the theoretical capacity value, that is, the difference between the two capacities is zero or within a preset range, at this time, there is no need to adjust the capacity of the color-changing diaphragm.

[0170] In some preferred embodiments, perform a subtraction operation on the first transmittance and the theoretical transmittance to obtain the difference between the two transmittances. The difference between the two transmittances can be the difference obtained by subtracting the theoretical transmittance from the first transmittance, or the difference obtained by subtracting the first transmittance from the theoretical capacity value. The differences obtained in both cases can be used as the first transmittance difference. If the first transmittance is equal to the theoretical transmittance, that is, the difference between the two transmittances is zero or within a preset range, at this time, there is no need to adjust the transmittance of the color-changing diaphragm.

[0171] It should be noted that the theoretical capacity value can be known by referring to the parameter data table of the temperature and theoretical capacity value of the color-changing diaphragm. The temperature-theoretical capacity value relationship can be the corresponding relationship table of the ambient temperature and the theoretical capacity value, or a relationship curve. Generally, the theoretical capacity value at high temperature (50°C - 85°C) is set to 3.5 mAh, and the theoretical capacity value at low temperature (0 - 50°C) is set to 4.8 mAh.

[0172] Exemplarily, if the current ambient temperature (detection temperature) is 65°C, the detected actual capacity is 4.5 mAh, and the theoretical capacity value is 3.5 mAh. At this time, the difference between the actual capacity and the theoretical capacity value is 1 mAh, that is, the actual capacity difference is 1 mAh.

[0173] It should be noted that the theoretical transmittance can be obtained by referring to the parameter data table of the capacity and theoretical transmittance of the color-changing film. The capacity-theoretical transmittance relationship can be a corresponding relationship table of the capacity and theoretical transmittance of the color-changing film, or a relationship curve. Generally, the set theoretical transmittance is 50%.

[0174] Exemplarily, if the set theoretical transmittance is 50% and the detected first transmittance is 51%, it can be known therefrom that the difference between the first transmittance and the theoretical transmittance is 1%, that is, the first transmittance difference is 1%. If the detected first transmittance is 48%, it can be known therefrom that the difference between the first transmittance and the theoretical transmittance is 2%, that is, the first transmittance difference is 2%.

[0175] Step S1022, determine the resistance adjustment amount according to the actual capacity difference or the first transmittance difference.

[0176] Specifically, determining the resistance adjustment amount according to the actual capacity difference is specifically as follows: after obtaining the actual capacity difference, the resistance adjustment amount can be calculated by a formula, or the resistance adjustment amount can be obtained by referring to the capacity difference-resistance adjustment amount corresponding relationship table or relationship curve of the actual capacity difference and the resistance adjustment amount.

[0177] It should be noted that before determining the resistance adjustment amount according to the actual capacity difference, an adjustment circuit formed by connecting in parallel multiple (for example, 3) resistors with different resistance values can be selected and connected in series with the color-changing film, and the capacity difference corresponding to the color-changing film connected in series with the adjustment circuit with different resistance values is tested, and each resistance value and the corresponding capacity difference are associated and stored in the memory. According to the relationship between each resistance value and the capacity difference stored in the database, the resistance adjustment amount corresponding to the capacity with the smallest difference from the theoretical capacity value can be determined.

[0178] It should be explained that the capacity difference is the difference between the capacity corresponding to the color-changing film when connected in series with the adjustment circuit and the capacity corresponding to the color-changing film when not connected in series with the adjustment circuit.

[0179] In an embodiment of the present application, if the current ambient temperature (detection temperature) is 65°C and the corresponding theoretical capacity value is 3.5 mAh. When the detected actual capacity difference of the color-changing film is 0.4 mAh ± 0.05 mAh, by referring to the actual capacity difference-resistance adjustment amount corresponding relationship table, the corresponding resistance adjustment amount can be obtained as 1 Ω, and for every difference of 0.4 mAh ± 0.05 mAh in the actual capacity difference, the corresponding resistance adjustment amount is 1 Ω.

[0180] It should be noted that the designer can also obtain the initial capacity of the color-changing film and determine the resistance adjustment amount according to the size of the initial capacity.

[0181] Specifically, there is a certain relationship among the resistance adjustment amount, the initial capacity, and the actual capacity. When the initial capacity is different, the capacity changed by the adjustment circuit of the resistance adjustment amount is different. When the initial capacities are the same, the capacity changed by the adjustment circuit of the resistance adjustment amount is the same. Therefore, the resistance adjustment amount can be determined by obtaining the difference between the initial capacity and the actual capacity.

[0182] The resistance adjustment amount is determined according to the first transmittance difference. Specifically, after obtaining the first transmittance difference, the resistance adjustment amount can be calculated by a formula, or the resistance adjustment amount can be obtained by referring to the transmittance difference-resistance adjustment amount correspondence table or relationship curve of the first transmittance difference and the resistance adjustment amount.

[0183] It should be noted that before determining the resistance adjustment amount according to the first transmittance difference, an adjustment circuit formed by connecting in parallel multiple (such as 3) resistors with different resistance values can be selected and connected in series with the electrochromic film, and the transmittance differences corresponding to the electrochromic film connected in series with the adjustment circuits with different resistance values are tested, and each resistance value and the corresponding transmittance difference are associated and stored in the memory. According to the relationship between each resistance value and the transmittance difference stored in the database, the resistance adjustment amount corresponding to the transmittance with the smallest difference from the theoretical transmittance can be determined.

[0184] It should be explained that the transmittance difference is the difference between the transmittance when the electrochromic film is connected in series with the adjustment circuit and the transmittance when the electrochromic film is not connected in series with the adjustment circuit.

[0185] In an embodiment of the present application, the first transmittance difference includes the transmittance difference in the brightest state and / or the transmittance difference in the darkest state. If the theoretical transmittance range of the electrochromic film is set to 10%-50%, when the transmittance difference in the brightest state is 2.5%±0.5%, by referring to the transmittance-resistance adjustment amount correspondence table, the corresponding resistance adjustment amount is determined to be 1Ω. When the transmittance difference in the darkest state is 1%±0.5%, by referring to the transmittance difference-resistance adjustment amount correspondence table, the corresponding resistance adjustment amount is determined to be 1Ω.

[0186] In other embodiments, the theoretical transmittance range of the electrochromic device can also be set. For example, when the electrochromic device is integrated on the glass, the lower limit of the theoretical transmittance of the entire electrochromic device can be set to 1.4%-1.5%, and the upper limit of the theoretical transmittance can be set to 7%-7.1%. If the detected lower limit of the first transmittance is 1.3%, at this time, the transmittance needs to be adjusted by 0.1%. By referring to the transmittance-resistance adjustment amount correspondence table, the corresponding resistance adjustment amount is determined to be 1Ω.

[0187] It should be noted that the designer can also obtain the initial transmittance of the color-changing film, and determine the resistance adjustment amount according to the size of the initial transmittance. Specifically, there is a certain relationship between the resistance adjustment amount, the initial transmittance, and the first transmittance. When the initial transmittances are different, the transmittances changed by the adjustment circuit of the resistance adjustment amount are different; when the initial transmittances are the same, the transmittances changed by the adjustment circuit of the resistance adjustment amount are the same. Therefore, the resistance adjustment amount can be determined by obtaining the difference between the initial transmittance and the first transmittance.

[0188] Step S103: Control the adjustment circuit corresponding to the resistance adjustment amount to conduct with the color-changing film.

[0189] Specifically, after determining the resistance adjustment amount, control the adjustment circuit corresponding to the resistance adjustment amount to conduct with the color-changing film. Since the resistance adjustment amount is determined according to the actual capacity and the theoretical capacity value or according to the first transmittance and the theoretical transmittance, the adjustment circuit with the resistance value of the resistance adjustment amount is connected in series with the color-changing film to achieve voltage division, which can play a role in voltage division during the charging or discharging process of the color-changing film, thereby adjusting the amount of electricity charged into the color-changing film and the amount of electricity released by the color-changing film. By using the same charging logic and charging parameters, the final amount of electricity of the color-changing film can be made consistent, so as to adjust the capacity of the entire color-changing film to the theoretical capacity value. It is equivalent to connecting a series of adjustment circuits with corresponding resistance adjustment amounts on the color-changing film to make up for the difference in the internal resistance of the color-changing film. By setting the adjustment circuit, the capacities of the color-changing films are adjusted to be consistent, so that when the color-changing films are charged with the same control logic and control parameters, the transmittances reach consistency, thereby improving the consistency of the color-changing films. It can reduce the visual error when the user is watching and enhance the user's visual experience. In addition, since the capacities of all the color-changing films are adjusted to the preset range by connecting the adjustment circuit in series during the production process, that is, the capacities of the color-changing films with large capacity deviations can be calibrated to the standard capacity range, the defective rate of the product can be greatly reduced.

[0190] In an embodiment of the present application, as Figure 8 shown, the control method 100 of the electrochromic device further includes steps S104 to S105.

[0191] Step S104: Detect the temperature of the color-changing film.

[0192] Specifically, use a temperature sensor to detect the temperature of the color-changing film. The performance of the color-changing film may change at different temperatures, and the corresponding capacities are also different. Therefore, by detecting the temperature, the temperature information of the color-changing film in the current environment can be obtained, and then the resistance adjustment amount suitable for this temperature can be determined to achieve precise adjustment of the capacity of the color-changing film.

[0193] Exemplarily, one or more temperature sensors can be provided at all four corners of the color-changing film, or one or more temperature sensors can be provided at two corners on the diagonal of the color-changing film. Such a setting can more comprehensively detect the temperature of the color-changing film.

[0194] Step S105, determine the resistance adjustment amount according to the temperature.

[0195] Specifically, the relationship between temperature and resistance adjustment amount can be pre-stored in a memory. After obtaining the temperature of the color-changing film, the resistance adjustment amount can be calculated through a formula, or the resistance adjustment amount can be obtained by referring to a temperature-resistance adjustment amount correspondence table or relationship curve. In addition, the capacitance of the color-changing film can be determined through a temperature-capacitance relationship correspondence table, and then the resistance adjustment amount can be determined according to a capacitance-resistance adjustment amount correspondence table or relationship curve.

[0196] Figure 9 The schematic block diagram of the computer-readable storage medium and the arithmetic unit provided by the embodiment of the present application is shown. As Figure 9 shown, the embodiment of the present application also provides a computer-readable storage medium 901. A computer program is stored on the computer-readable storage medium 901. When the computer program runs on the arithmetic unit 902, it executes the control method of the electrochromic device provided by the above embodiment, such as method 100. It should be understood that the description of the control method embodiment corresponds to the description of the device embodiment. Therefore, the content not described in detail can be referred to the above device embodiment. For the sake of brevity, it will not be repeated here.

[0197] In the embodiment of the present application, the type of the computer-readable storage medium 901 is not particularly limited. In some embodiments, the computer-readable storage medium 901 may include: various media such as USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks or optical discs that can store program codes.

[0198] In the embodiment of the present application, the type of the arithmetic unit 902 is also not particularly limited. In some embodiments, the arithmetic unit 902 may include a controller, a mobile phone, a computer or other intelligent devices, etc.

[0199] As Figure 10 shown, some embodiments of the present application also disclose a manufacturing method 200 of an electrochromic device, including step S201 to step S203.

[0200] Step S201, detect the actual capacitance or the first transmittance of the color-changing film when the color-changing film is charged or discharged to a preset condition.

[0201] Specifically, when detecting that the color-changing film is charged or discharged to a preset condition, the actual capacity of the color-changing film or the first transmittance of the color-changing film can be detected by detecting the electrical parameters or optical parameters of the color-changing film to characterize the information about the energy storage capacity and optical performance of the color-changing film. The actual capacity reflects the energy storage capacity of the color-changing film. According to the relationship between the capacity and the transmittance, the transmittance corresponding to the actual capacity can be determined. That is to say, the capacity can be measured electrically to judge whether the optical performance of the color-changing film meets the requirements. The first transmittance reflects the optical performance of the color-changing film and can also judge whether the optical performance of the color-changing film can meet the requirements. By obtaining the actual capacity and the first transmittance of the color-changing film, the state of the color-changing film can be monitored in real time, and corresponding adjustment and control can be carried out to improve the energy utilization efficiency.

[0202] Among them, the above preset conditions include at least one of the following: 1. When charging or discharging for a preset time, the current value reaches a preset value. Exemplarily, after charging or discharging for 5 seconds, the current value drops to 40 mA; 2. Fully charging or fully discharging the color-changing film. Exemplarily, full charging can be considered as charging from the lowest transmittance of the color-changing film to the highest transmittance, or vice versa. Full discharging can be considered as charging from the highest transmittance of the color-changing film to the lowest transmittance. 3. Charging or discharging reaches a preset duration. Exemplarily, such as 120 s. 4. Charging or discharging to a preset gear and a preset transmittance. The exemplary values in the embodiments of the present application are only examples, and the values will vary according to the materials, areas, etc. of the color-changing film.

[0203] Step S202, determine the resistance adjustment amount that the color-changing film needs to be adjusted according to the actual capacity and the theoretical capacity value, or according to the first transmittance and the theoretical transmittance.

[0204] Specifically, by comparing the actual capacity of the color-changing film with the theoretical capacity value, and then by referring to the corresponding relationship table or relationship curve of the actual capacity, the theoretical capacity value and the resistance, the resistance adjustment amount that the color-changing film needs to be adjusted can be determined. Or it can also be determined by comparing the first transmittance of the color-changing film with the theoretical transmittance, and then by referring to the corresponding relationship table or relationship curve of the first transmittance, the theoretical transmittance and the resistance, the resistance adjustment amount that the color-changing film needs to be adjusted.

[0205] Step S203, connect the adjustment circuit with the resistance value with the resistance adjustment amount to the color-changing film.

[0206] Specifically, after determining the resistance adjustment amount, the adjustment circuit with the resistance adjustment amount is connected to the electrochromic film. Since the resistance adjustment amount is determined based on the actual capacity and the theoretical capacity value or based on the first transmittance and the theoretical transmittance, the adjustment circuit with the resistance value of the resistance adjustment amount is connected in series with the electrochromic film to achieve voltage division, which can play a role in voltage division during the charging or discharging process of the electrochromic film, thereby adjusting the amount of charge injected into the electrochromic film and the amount of charge released by the electrochromic film. By using the same charging logic and charging parameters, the final charge of the electrochromic film can be made consistent, so as to adjust the capacity of the entire electrochromic film to the theoretical capacity value. It is equivalent to connecting an adjustment circuit with a corresponding resistance adjustment amount in series on the electrochromic film to make up for the difference in the internal resistance of the electrochromic film. By setting the adjustment circuit, the capacities of the electrochromic films are adjusted to be consistent, so that when the electrochromic films are charged using the same control logic and control parameters, the transmittances are consistent, thereby improving the consistency of the electrochromic films. It can reduce the visual error when the user is viewing and enhance the user's visual experience. In addition, since the capacities of all the electrochromic films are adjusted to the preset range by connecting the adjustment circuit in series during the production process, that is, the capacities of the electrochromic films with relatively large capacity deviations can be calibrated to the standard capacity range, the defective rate of the product can be greatly reduced.

[0207] As Figure 11 shown, another embodiment of the present application also discloses an electrochromic device 10, including an electrochromic film 101 and an adjustment circuit 102. The electrochromic film body includes a first conductive substrate 1011, an electrochromic stack layer 1013, and a second conductive substrate 1012 that are sequentially stacked; the electrochromic film 101 includes the electrochromic film body and a power input terminal for receiving the power supply VCC. The adjustment circuit 102 is connected to one end of the power input terminal facing away from the electrochromic film body. The adjustment circuit 102 is used to adjust the amount of charge injected into the electrochromic film 101 and the amount of charge released by the electrochromic film 101 when charging or discharging the electrochromic film 101.

[0208] Specifically, the power input end is the point where the power output lead is connected to the conductive layer of the electrochromic film 101, or it can also be the end point connected to the bus bar, such as the binding position of the lead-out structure and the bus bar. The adjustment circuit 102 has a resistance value associated with the electrochromic film 101. By connecting the adjustment circuit 102 with a certain resistance value, when charging or discharging the electrochromic film 101, the adjustment circuit 102 plays a role in adjusting the amount of charge injected into the electrochromic film 101 and the amount of charge released by the electrochromic film 101, so that the capacity of the entire electrochromic device 10 can be adjusted to the standard capacity. When a driving voltage is applied to the electrochromic film 101 until the open-circuit voltage of the electrochromic device 10 reaches a preset value, the transmittance of the electrochromic device 10 is within the preset range. Therefore, the capacity corresponding to full charge and / or full discharge of each electrochromic device 10 can be tested before leaving the factory. Full charge means that the electrochromic device 10 is charged from the lowest gear (highest gear) to the highest gear (lowest gear), or from the lowest transmittance (highest transmittance) within the transmittance range to the highest transmittance (lowest transmittance), or after applying a voltage to the electrochromic device 10 for a preset time, detecting that the charging current magnitude decreases to the preset value and stopping charging; full discharge means that the electrochromic device 10 is discharged from the highest gear (lowest gear) to the lowest gear (highest gear), or from the highest transmittance (lowest transmittance) within the transmittance range to the lowest transmittance (highest transmittance), or after discharging the electrochromic device 10 for a preset time, detecting that the charging current magnitude decreases to the preset value and stopping discharging.

[0209] According to the comparison between the capacity of each electrochromic device 10 itself and the standard capacity, the resistance value of the adjustment circuit 102 to be connected in series is determined according to the difference between the capacity value of each electrochromic device 10 itself and the standard capacity value. The adjustment circuit 102 with different resistance values is added according to the different capacities of different electrochromic devices 10. Each adjustment circuit 102 can adjust the amount of charge charged into and released from the corresponding color-changing film 101. Therefore, it can ensure that the capacity error of all electrochromic devices 10 is within the preset range. Therefore, when all electrochromic devices 10 are charged to the same gear using the same control logic and control parameters, the transmittance of all electrochromic devices 10 remains consistent, improving the consistency of the electrochromic devices 10, reducing the visual error when the user views, and enhancing the user's visual experience. At the same time, the above structural design of the electrochromic device 10 can ensure that the electrochromic device 10 can be compatible with any controller, and it is possible to achieve consistent color-changing effects of all electrochromic devices 10 without developing a corresponding controller for a single electrochromic device 10. That is, the electrochromic device 10 provided in the embodiment of the present application can be applied to any controller without strictly screening a specific controller, improving the applicability of the electrochromic device 10. In addition, since the capacity of all electrochromic devices 10 is adjusted to the preset range by connecting the adjustment circuit 102 in series during the production process, that is, the capacity of the electrochromic device 10 with a relatively large capacity deviation can be calibrated to the standard capacity range, the defective rate of the product can be greatly reduced, and the yield of the product can be improved.

[0210] It should be noted that the size of the standard capacity is related to the shape, material, and area of the specific electrochromic film 101. Generally speaking, the capacities corresponding to the electrochromic films 101 of the same model are consistent. When charging or discharging multiple electrochromic devices 10 until a preset time, such as 10 seconds later, the current is detected. When the magnitude of the current reaches the preset cut-off current, such as 40 mA, the charging or discharging of the electrochromic film 101 is stopped. At this time, it can be considered that the electrochromic film 101 is fully charged or fully discharged. The capacity of the corresponding electrochromic film 101 is regarded as the capacity of the electrochromic device 10. Due to systematic errors generated during the production process of each electrochromic film 101, there will be errors in the capacities corresponding to each electrochromic film 101. The average value of multiple electrochromic films 101 is taken and defined as the standard capacity of the electrochromic device 10 of this model. In addition, since the capacity values corresponding to different temperatures are different, therefore, for every 5°C temperature difference, the corresponding temperature-standard capacity relationship library is tested. Preferably, the temperature capacity corresponding to 85°C is used as the standard capacity for calculation. It can be obtained by referring to the parameter specification of the temperature and standard capacity of the electrochromic film 101. The temperature-standard capacity relationship can be a corresponding relationship table between the ambient temperature and the standard capacity, or a relationship curve. Generally, the standard capacity at high temperature (50°C - 85°C) is set to 3.5 mAh, and the standard capacity at low temperature (0 - 50°C) is set to 4.8 mAh.

[0211] It should be noted that the electrochromic film body includes a first conductive substrate 1011, a second conductive substrate 1012, and an electrochromic layer 1013 that are sequentially stacked. First grooves and second grooves are alternately arranged around the edge of the electrochromic film body. The first grooves penetrate through the first conductive substrate 1011 and the electrochromic layer 1013, exposing the conductive layer of the second conductive substrate 1012; the second grooves penetrate through the second conductive substrate 1012 and the electrochromic layer 1013, exposing the conductive layer of the first conductive substrate 1011. A first bus bar is bonded to the four peripheral edges on one side of the first conductive substrate 1011, and the first bus bar is in contact conduction with the conductive layer of the second conductive substrate 1012. A second bus bar is bonded to the four peripheral edges on one side of the second conductive substrate 1012, and the second bus bar is in contact with the conductive layer of the first conductive substrate 1011. The color change principle of the electrochromic device 10 is based on the electrochromic effect. Among them, the electrochromic effect refers to that when a voltage is applied to the first conductive substrate 1011 and the second conductive substrate 1012 of the electrochromic film 101, charge transfer will occur, thereby changing the optical properties of the material. If no voltage is applied to the first conductive substrate 1011 and the second conductive substrate 1012 of the electrochromic film 101, the electrochromic film 101 presents a transparent or lighter color. If a voltage is applied to the first conductive substrate 1011 and the second conductive substrate 1012 of the electrochromic film 101, charge transfer will cause a redox reaction in the electrochromic film 101, making its color darker. Or, if no voltage is applied to the first conductive substrate 1011 and the second conductive substrate 1012 of the electrochromic film 101, the electrochromic film 101 presents a darker color. If a voltage is applied to the first conductive substrate 1011 and the second conductive substrate 1012 of the electrochromic film 101, its color becomes lighter or transparent. It should be noted that only one possible electrochromic film is listed in this application. In other embodiments, other electrochromic films are also used, such as liquid crystal dimming films, etc.

[0212] In an embodiment of the present application, the electrochromic device 10 further includes a lead-out structure. One end of the lead-out structure is connected to the power input terminal, and the other end is connected to the power output terminal. The adjustment circuit 102 is arranged on the lead-out structure.

[0213] Specifically, one end of the lead-out structure is connected to the power input terminal, and the other end is connected to the power output terminal. This enables the power supply VCC to be transmitted to the adjustment circuit 102 in the electrochromic device 10. The adjustment circuit 102 is connected to the lead-out structure and adjusts the amount of charge injected into or released from the electrochromic film 101 by controlling signals or voltages, so as to adjust the capacitance of the electrochromic device 10 to reach the standard capacitance. Therefore, the lead-out structure serves to connect the power supply VCC input to the adjustment circuit 102, enabling the adjustment circuit to accurately control the capacitance of the electrochromic film. At the same time, the adjustment circuit 102 is arranged on the lead-out structure with a simple process, without the need for complex modification of the internal structure of the electrochromic device 10, making it easier to control the quality. Moreover, this design is structurally compact, reducing the volume of the overall device. It is also convenient for the transportation and packaging of the electrochromic device 10 and can be adapted to the controller.

[0214] Exemplarily, the lead-out structure can be a wire, a metal lead, an electrode, a flexible printed circuit (FPC), or other connection structures for transmitting the power supply VCC signal and control signals. The design and connection method of the lead-out structure can ensure a stable power supply VCC and effective signal transmission to ensure the normal operation and adjustment of the electrochromic device. The composition of the lead-out structure is not limited herein.

[0215] Specifically, the FPC includes a first conductive section and a second conductive section; the first conductive section is electrically connected to the electrochromic film 101, that is, the first conductive section can be the FPC, and one end of the FPC is connected to the power input terminal of the electrochromic film 101, and the second conductive section is used to be electrically connected to the power supply VCC, and the adjustment circuit 102 is connected between the first conductive section and the second conductive section.

[0216] After manufacturing the electrochromic film, the first conductive section of the first flexible printed circuit board can be bonded to the first bus bar, and the first conductive section of the second flexible printed circuit board can be bonded to the second bus bar. The second conductive section of the first flexible printed circuit board and the second conductive section of the second flexible printed circuit board are respectively connected to the power supply, and then the capacitance of the electrochromic device 10 is tested through the first conductive section. The adjustment circuit 102 with a corresponding resistance value to be connected is obtained according to its own capacitance. Then, one end of the adjustment circuit 102 is connected to the second conductive section to complete the manufacture of the entire electrochromic device. Dividing the lead-out structure into two sections can not only complete various electrical tests before leaving the factory but also adjust the capacitance of the entire device according to the electrical performance after testing the electrical performance. Moreover, setting the lead-out structure in sections makes it easier to connect the adjustment circuit 102, making the entire production process simpler and the device structure more reasonable.

[0217] Specifically, the flexible circuit board is generally a pair of circuit boards, including a positive electrode and a negative electrode, which are respectively connected to the positive and negative electrodes of the power supply, namely the first flexible circuit board 1031 and the second flexible circuit board 1032. The flexible circuit board (the first flexible circuit board 1031 and the second flexible circuit board 1032) is a flexible and bendable circuit board that provides a channel for circuit transmission, enabling the controller to apply appropriate voltage and current to the electrochromic diaphragm 101 through the regulating circuit 102. At the same time, the first flexible circuit board 1031 and the second flexible circuit board 1032 maintain good electrical connectivity during the bending or folding process of the electrochromic device 10, are not easily broken or damaged, can adapt to the shape change of the electrochromic device 10, and maintain reliable signal transmission during long-term use.

[0218] It should be noted that the regulating circuit 102 can be arranged at a suitable position on the first flexible circuit board 1031 according to design requirements, and functions of supporting and fixing the regulating circuit 102 are provided. Since the first flexible circuit board 1031 is relatively thin, it occupies a small space in the electrochromic device 10 and can adapt to various substrates, such as curved glass, flat glass, etc., making the entire system more compact and stable.

[0219] In an embodiment of the present application, the electrochromic device 10 further includes a first bus bar and a second bus bar. The first bus bar is electrically connected to the electrochromic diaphragm 101 and the first conductive segment, and the second bus bar is electrically connected to the electrochromic diaphragm 101 and the second conductive segment.

[0220] Specifically, the first bus bar is made of a conductive material such as copper foil, and conducts the current of the power supply into the conductive layer of the electrochromic diaphragm 101, that is, the current output by the first conductive segment is transmitted to the conductive layer of the first conductive substrate 1011 through the first bus bar. The second bus bar is used to conduct current, that is, the current output by the second conductive segment is transmitted to the conductive layer of the second conductive substrate 1012 through the second bus bar. At the same time, the first bus bar and the second bus bar are distributed along the periphery of the electrochromic diaphragm 101, which can ensure uniform current transmission, avoid local current concentration causing hot spots or damage, and can also be used to separate circuits to prevent short circuits.

[0221] In an embodiment of the present application, as Figure 13 shown, the regulating circuit 102 includes at least one first resistor R1, and the first resistor R1 is connected in series between the first conductive segment and the second conductive segment.

[0222] Among them, the resistor can be a resistor with a specific resistance value on the market, and the resistance value is specifically selected according to the difference in capacity, such as 1Ω, 2Ω, 3Ω, etc.

[0223] Specifically, when power is supplied to the electrochromic device 10, the first resistor R1 can play a voltage-dividing role, reducing the voltage between the first conductive substrate 1011 and the second conductive substrate 1012 transmitted to the color-changing film 101, thereby adjusting the amount of electric charge charged into the color-changing film 101 or the amount of electric charge released by the color-changing film 101, so that the capacity of the electrochromic device 10 reaches the standard capacity.

[0224] It should be noted that the first resistor R1 can be a resistor with a fixed resistance value. After detecting the capacity of the electrochromic device 10, the resistance value of the first resistor R1 to be connected in series can be determined, and then the first resistor R1 is connected in series and welded to the lead-out structure of the entire color-changing film 101. Of course, it can also be welded to the lead-out structure in advance, and the first resistor R1 can be controlled to be connected between the first conductive section and the second conductive section through an external control signal, so that the current flowing to the color-changing film 101 passes through the first resistor R1 and then into the color-changing film 101; thus, the amount of electric charge charged into the color-changing film 101 or the amount of electric charge released by the color-changing film 101 can be adjusted, and further the capacity of the electrochromic device 10 can be adjusted.

[0225] It should be noted that the wiring method of the first resistor R1 can be to put the wire and the first resistor R1 in a nylon tube with low-temperature tin, and heat the nylon tube and the low-temperature tin to shrink, so that the wire and the resistor can be welded. At the same time, the position of the first resistor R1 is not limited, and it can be set at the output end of the controller, between the controller and the first flexible circuit board 1031, on the first flexible circuit board 1031 or other positions.

[0226] In some embodiments of the present application, the first resistor R1 can also be a variable resistor. Among them, the first resistor R1 can be a sliding rheostat, and the resistance value of the sliding rheostat can be appropriately adjusted according to the different capacities of the electrochromic device 10 to adapt to electrochromic devices 10 with different capacities and improve the lifespan of the electrochromic device 10. The first resistor R1 can also be set as a thermistor, and the resistance value of the thermistor can change with the change of temperature. Therefore, by connecting a thermistor in series between the first conductive segment and the second conductive segment, the resistance value can be changed with the change of temperature. Since the capacity of the electrochromic device 10 is affected by temperature, connecting a thermistor in series can more accurately adjust the amount of electricity charged into the color-changing film 101, playing a role in real-time adjusting the capacity of the electrochromic device 10. The first resistor R1 can also be set as a photoresistor, and the resistance value of the photoresistor can change with the change of light intensity. Therefore, by connecting a photoresistor in series between the first conductive segment and the second conductive segment, the capacity of the electrochromic device 10 can be adjusted in real time with the change of light intensity. When the above variable resistors are connected in series with the first conductive substrate 1011, when the controller uses the same control logic to control all electrochromic devices 10, the transmittance of all electrochromic devices 10 will remain consistent, thereby avoiding visual errors for users during viewing and improving the visual experience of users.

[0227] In some embodiments of the present application, the difference in the selection of the adjustment circuit 102 from the above is that the adjustment circuit 102 is screen-printed on a flexible circuit board by screen-printing conductive paths with different resistance values.

[0228] In an embodiment of the present application, as Figure 14 shown, the adjustment circuit 102 includes a plurality of switch units 1021 and a plurality of voltage-dividing units 1022. Each switch unit 1021 is correspondingly electrically connected to at least one voltage-dividing unit 1022, and at least two voltage-dividing units are connected in parallel and then connected in series with the color-changing film 101.

[0229] Specifically, since the switching unit 1021 and the voltage dividing unit 1022 are electrically connected correspondingly, the switching unit 1021 can control the voltage dividing unit 1022 to conduct the first conductive segment and the second conductive segment. If the capacitance of the electrochromic device 10 is not within the preset range, the switching unit 1021 is controlled to be in the on state, and the voltage dividing unit 1022 is connected in series between the first conductive segment and the second conductive segment. At this time, the voltage dividing unit 1022 can play a role in voltage division, thereby reducing the voltage between the first conductive substrate 1011 and the second conductive substrate 1012 transmitted to the color-changing film 101, achieving the purpose of adjusting the capacitance of the electrochromic device 10. By adjusting the capacitance of the electrochromic device 10, the transmittance of the electrochromic device 10 can be adjusted, so that the transmittances of the electrochromic devices 10 can be adjusted to be consistent through the voltage dividing unit 1022, improving the consistency of the electrochromic devices 10. If the capacitance of the electrochromic device 10 is within the preset range, the switching unit 1021 is controlled to be in the off state, and the voltage dividing unit 1022 is disconnected from the first conductive segment and the second conductive segment, and the voltage dividing unit 1022 does not perform voltage division, and there is no need to adjust the capacitance of the electrochromic device 10.

[0230] It should be noted that the resistance values of at least two voltage dividing units 1022 are not equal. The adjustment circuit 102 can be first connected to the electrochromic device 10, and the capacitance of the electrochromic device 10 can be measured according to electrical tests, the resistor to be connected can be determined, the voltage dividing unit 1022 corresponding to this resistance value can be selected to be turned on, and the voltage dividing unit 1022 with this resistance value can be welded.

[0231] In an embodiment of the present application, as Figure 14 shown, the switching unit 1021 includes a first switch S1, the voltage dividing unit 1022 includes a second resistor R2, and the first switch S1 is electrically connected to at least one second resistor R2.

[0232] Specifically, the first switch S1 can be a control switch for receiving an external control signal or a manual switch operated by a human. If the capacity of the electrochromic device 10 is not within the preset range, the first switch S1 is controlled to conduct, and the second resistor R2 conducts the first conductive segment and the second conductive segment. The second resistor R2 can play a role in voltage division, thereby reducing the voltage between the first conductive substrate 1011 and the second conductive substrate 1012 transmitted to the color-changing film 101, achieving the purpose of adjusting the capacity of the electrochromic device 10. By adjusting the capacity of the electrochromic device 10, the transmittance of the electrochromic device 10 can be adjusted, so that the transmittance of each electrochromic device 10 can be adjusted to be consistent through the second resistor R2, improving the consistency of each electrochromic device 10. If the capacity of the electrochromic device 10 is within the preset range, the first switch S1 is controlled to disconnect, and the second resistor R2 is disconnected from the first conductive segment and the second conductive segment, and the second resistor R2 does not perform voltage division, and there is no need to adjust the capacity of the electrochromic device 10.

[0233] It should be noted that the external control signal can be controlled by manual operation or by a controller. The state of the first switch S1 can be determined by detecting parameters such as the electric quantity charged into the color-changing film 101, the electric quantity released by the color-changing film 101, or the transmittance. When it is detected that the capacity of the electrochromic device 10 is within the preset range, the external control signal can control the first switch S1 to conduct. The temperature of the color-changing film 101 can also be detected by a temperature sensor to obtain the corresponding relationship between the temperature and the capacity, thereby determining the state of the first switch S1.

[0234] Exemplarily, if the current ambient temperature (detected temperature) is 65 °C, the corresponding theoretical capacity value is 3.5 mAh. When the detected actual capacity difference of the electrochromic device 10 is 0.4 mAh ± 0.05 mAh, by referring to the actual capacity difference - resistance adjustment amount corresponding relationship table, the corresponding resistance adjustment amount can be obtained as 1 Ω. At this time, the first switch S1 connected in series with the second resistor R2 with a resistance value of 1 Ω can be controlled to close, so that the capacity of the electrochromic device 10 can reach the standard capacity. If the resistance value of the second resistor R2 is obtained as 3 Ω by referring to the capacity difference - target resistance value corresponding relationship table, at this time, the first switch S1 connected in series with the 3 Ω second resistor R2 can be controlled to close. And so on, so that the capacity of the electrochromic device 10 reaches the standard capacity. Among them, the capacity difference - target resistance value can be recorded in a database through experimental tests.

[0235] It should be noted that the connection relationship between the first switch S1 and the second resistor R2 is not limited to this. The positions of the first switch S1 and the second resistor R2 can be interchanged, and the principle is the same, so no more details will be described here.

[0236] It should be noted that the first switch S1 can be an electronic switch or a mechanical switch, and the first switch S1 can be replaced by other switch devices. Figure 14 Only one type of switch is shown, and it is not limited to this.

[0237] It should be noted that the above-mentioned first conductive segment and second conductive segment are both copper foils, which is beneficial to the transmission and conduction of circuit signals. At the same time, the copper foil is thin and flexible, and can be well attached to the first flexible circuit board 1031 to form good electrical contact, which helps subsequent operations such as welding processes.

[0238] In an embodiment of the present application, the electrochromic device 10 further includes a controller, and the adjustment circuit 102 is integrated in the circuit board of the controller.

[0239] Specifically, the controller is used to output a control signal or a power supply VCC signal to the color-changing film 101 to achieve the control and adjustment of the color-changing film 101. The controller can accurately control the color-changing film 101 according to external input signals, preset parameters, or automatic control algorithms, etc., so that the capacity of the electrochromic device 10 reaches the standard capacity.

[0240] Some embodiments of the present application also disclose an electrochromic device, including a substrate layer and the above-mentioned electrochromic device 10, and the substrate layer and the electrochromic device 10 are stacked.

[0241] Specifically, the electrochromic device formed by stacking the substrate layer and the electrochromic device 10 can ensure that when the same driving voltage is applied to all electrochromic devices, the transmittance of all electrochromic devices is the same, avoiding visual errors for users during viewing and improving the user's visual experience.

[0242] Exemplarily, the substrate layer can be glass. As Figure 15 shown, the electrochromic device 10 is disposed between the first glass 20 and the second glass 30.

[0243] Specifically, by disposing the electrochromic device 10 between the first glass 20 and the second glass 30, on the one hand, the first glass 20 and the second glass 30 play a role in fixing the color-changing film 101, and on the other hand, it can also protect the electrochromic device 10 from the influence of the external environment, such as temperature, humidity, etc., which is beneficial to improving the service life and reliability of the device. The electrochromic device using the above-mentioned electrochromic device 10 can realize the color-changing function of the electrochromic device. By controlling the voltage of the electrochromic device 10, the color and light transmittance of the electrochromic device can be changed, avoiding visual errors for users during viewing and improving the user's visual experience.

[0244] In an embodiment of the present application, an encapsulation layer 40 is provided at the outer peripheral edge of the electrochromic film 101, and the adjustment circuit 102 is accommodated in the encapsulation layer 40.

[0245] Specifically, as Figure 15 shown, an encapsulation layer 40 is provided between the electrochromic film 101 and the first glass, an encapsulation layer 40 is provided between the electrochromic film 101 and the second glass, and an encapsulation layer 40 is provided around the electrochromic film 101. The adjustment circuit 102 is disposed on the first flexible circuit board 1031 and accommodated in the encapsulation layer 40 around the electrochromic film 101. The second conductive segments of the first flexible circuit board 1031 and the second flexible circuit board 1032 both penetrate through the encapsulation layer 40. During the manufacturing process of the electrochromic device 10, the encapsulation layer 40 between the electrochromic film 101 and the first glass, the encapsulation layer 40 between the electrochromic film 101 and the second glass, and the encapsulation layer 40 around the electrochromic film 101 are all heated, and each encapsulation layer 40 will fuse into one body, finally forming the electrochromic device 10.

[0246] It should be noted that the function of the encapsulation layer 40 is to increase the safety of the electrochromic device 10 and avoid the impact of the external environment on the electrochromic device 10. When the glass is subjected to external force impact, the encapsulation layer 40 can absorb and disperse the impact force and reduce the risk of glass breakage. At the same time, the resin material has strong adhesion and ductility, and can firmly bond the substrate layer and the electrochromic device 10 together, improving the reliability of the electrochromic device 10. The encapsulation layer 40 has good transparency and can block the transmission of ultraviolet rays, playing a role in heat insulation and ultraviolet protection. At the same time, the electrochromic film 101, the adjustment circuit 102, and the first flexible circuit board 1031 are disposed in the encapsulation layer 40, which can also improve the aesthetics of the electrochromic device 10. The second conductive segment penetrates through the encapsulation layer 40, which can facilitate the connection of the electrochromic device to an external power supply VCC or a control line, and facilitate the assembly and installation with other electrochromic devices, thereby providing power supply and control signals for the electrochromic device.

[0247] Exemplarily, as Figure 15 shown, an encapsulation layer 40 is provided between the first glass 20 and the second glass 30, and PVB (polyvinyl butyral) resin can be selected as the encapsulation layer 40 provided between the first glass 20 and the second glass 30.

[0248] Some embodiments of the present application also disclose a terminal product, including the above-mentioned electrochromic device or the above-mentioned electrochromic device. After installing the above-mentioned electrochromic device on the terminal product, the terminal product can realize functions such as privacy protection, light adjustment, energy conservation and environmental protection, and improve the user's visual experience.

[0249] Exemplarily, the terminal product may include any one of a rearview mirror, a curtain wall, a car sunroof, a car side window, a car windshield, a housing of an electronic product, glasses, a vehicle, and a display panel, which is not limited herein.

[0250] Since the processing and functions implemented by the electrochromic device and the terminal product in this embodiment are basically corresponding to the embodiments, principles, and examples of the method for manufacturing the electrochromic device described above, for the details not described in the description of this embodiment, reference may be made to the relevant descriptions in the foregoing embodiments, which will not be elaborated herein.

[0251] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A control method for an electrochromic device, characterized in that, the electrochromic device includes a color-changing film and an adjustment circuit with multiple resistance values; the method includes: acquiring the actual capacity of the color-changing film or the first transmittance of the color-changing film when the color-changing film is charged or discharged to a preset condition; determining the resistance adjustment amount to be adjusted for the color-changing film according to the actual capacity and the theoretical capacity value, or according to the first transmittance and the theoretical transmittance; controlling the adjustment circuit corresponding to the resistance adjustment amount to be conducted with the color-changing film.

2. The control method for an electrochromic device according to claim 1, characterized in that, acquiring the actual capacity of the color-changing film or the first transmittance of the color-changing film when the color-changing film is charged or discharged to a preset condition includes: charging or discharging the color-changing film and detecting the real-time current passing through the color-changing film, and stopping charging or discharging the color-changing film when the real-time current is less than a preset current; integrating the real-time current during the charging or discharging process of the color-changing film to determine the actual capacity of the color-changing film, and / or detecting the first transmittance of the color-changing film.

3. The control method for an electrochromic device according to claim 1, characterized in that, the determining the resistance adjustment amount to be adjusted for the color-changing film according to the actual capacity and the theoretical capacity value, or according to the first transmittance and the theoretical transmittance includes: taking the difference between the actual capacity and the theoretical capacity value to obtain an actual capacity difference; or, taking the difference between the first transmittance and the theoretical transmittance to obtain a first transmittance difference; determining the resistance adjustment amount according to the actual capacity difference or the first transmittance difference.

4. The control method for an electrochromic device according to claim 3, characterized in that, before determining the resistance adjustment amount according to the actual capacity difference or the first transmittance difference, it further includes: detecting the difference between the capacity corresponding to when the color-changing film is connected in series with adjustment circuits of different resistance values and the capacity corresponding to when the adjustment circuit is not connected; or, detecting the difference between the transmittance when the color-changing film is connected in series with adjustment circuits of different resistance values and the transmittance when the adjustment circuit is not connected; associating and storing each resistance value with the corresponding capacity difference or transmittance difference.

5. The control method for an electrochromic device according to claim 3, characterized in that, the determining the resistance adjustment amount according to the actual capacity difference or the first transmittance difference includes: when the actual capacity difference is 0.4 mAh ± 0.05 mAh, determining the corresponding resistance adjustment amount to be 1 Ω; and / or, the first transmittance difference includes the transmittance difference in the brightest state and / or the transmittance difference in the darkest state. When the transmittance difference in the brightest state is 2.5% ± 0.5%, determining the corresponding resistance adjustment amount to be 1 Ω. When the transmittance difference in the darkest state is 1% ± 0.5%, determining the corresponding resistance adjustment amount to be 1 Ω.

6. The control method for an electrochromic device according to any one of claims 1-5, characterized in that, the method further includes: Detect the temperature of the color-changing film; Determine the resistance adjustment amount according to the temperature.

7. A control device for an electrochromic device, characterized in that, the electrochromic device includes a color-changing film and an adjustment circuit having multiple resistance values; the device includes: a detector for obtaining the actual capacity of the color-changing film or the first transmittance of the color-changing film when the color-changing film is charged or discharged to a preset condition; a processor for determining the resistance adjustment amount that the color-changing film needs to be adjusted according to the actual capacity and the theoretical capacity value, or according to the first transmittance and the theoretical transmittance; a driver for controlling the adjustment circuit corresponding to the resistance adjustment amount to be conducted with the color-changing film.

8. The control device for an electrochromic device according to claim 7, characterized in that, the driver is further configured to charge or discharge the color-changing film; the detector is further configured to detect the real-time current passing through the color-changing film; the driver is further configured to stop charging or discharging the color-changing film when the real-time current is less than a preset current; the processor is further configured to integrate the real-time current during the charging or discharging process of the color-changing film to determine the actual capacity of the color-changing film; the detector is further configured to: detect the first transmittance of the color-changing film.

9. The control device for an electrochromic device according to claim 7, characterized in that, the processor is further configured to: subtract the actual capacity value from the actual capacity to obtain an actual capacity difference; or, subtract the theoretical transmittance from the first transmittance to obtain a first transmittance difference; Determine the resistance adjustment amount according to the actual capacity difference or the first transmittance difference.

10. The control device for an electrochromic device according to claim 9, characterized in that, the processor is further configured to: detect the difference between the capacity when the color-changing film is connected in series with adjustment circuits of different resistance values and the capacity when not connected in series with the adjustment circuit; or, detect the difference between the transmittance when the color-changing film is connected in series with adjustment circuits of different resistance values and the transmittance when not connected in series with the adjustment circuit; associate and store each resistance value with the corresponding capacity difference or transmittance difference.

11. The control device for an electrochromic device according to claim 9, characterized in that, when the actual capacity difference is 0.4 mAh ± 0.05 mAh, the processor is further configured to determine the corresponding resistance adjustment amount as 1 Ω; and / or, the first transmittance difference includes the transmittance difference in the brightest state and / or the transmittance difference in the darkest state. When the transmittance difference in the brightest state is 2.5% ± 0.5%, the processor is further configured to determine the corresponding resistance adjustment amount as 1 Ω, or when the transmittance difference in the darkest state is 1% ± 0.5%, the processor is further configured to determine the corresponding resistance adjustment amount as 1 Ω.

12. The control device for an electrochromic device according to any one of claims 7-11, characterized in that, the detector is further configured to: detect the temperature of the color-changing film; the processor is further configured to: determine the resistance adjustment amount according to the temperature.

13. A computer-readable storage medium, It is characterized in that The computer-readable storage medium stores a computer program, and when the computer program is run on a computing unit, the control method of the electrochromic device according to any one of claims 1 to 6 is executed.

14. A control system for an electrochromic device, It is characterized in that It comprises a terminal platform and a control device for an electrochromic device as claimed in any one of claims 7 to 12, and information exchange is performed between the terminal platform and the control device for the electrochromic device.

15. A method for manufacturing an electrochromic device, It is characterized in that include: Detecting the actual capacity of the color-changing membrane or the first transmittance of the color-changing membrane when the color-changing membrane is charged or discharged to a preset condition; Determining the resistance adjustment amount of the color-changing membrane that needs to be adjusted according to the actual capacity and the theoretical capacity value, or according to the first transmittance and the theoretical transmittance; A regulating circuit having a resistance value of the resistance adjustment amount is connected to the color-changing film.

16. An electrochromic device, It is characterized in that include: A color-changing film and an adjustment circuit; the color-changing film includes a color-changing film body and a power input terminal for receiving power; the color-changing film body includes a first conductive substrate, an electrochromic stack layer and a second conductive substrate stacked in sequence; the adjustment circuit is connected to an end of the power input terminal away from the color-changing film body, and the adjustment circuit is used to adjust the amount of electricity charged into the color-changing film and the amount of electricity released by the color-changing film when charging or discharging the color-changing film.

17. The electrochromic device according to claim 16, It is characterized in that The electrochromic device further comprises a lead-out structure, one end of which is connected to the power input end, and the other end of which is connected to the power output end, and the regulating circuit is arranged on the lead-out structure.

18. The electrochromic device according to claim 16, It is characterized in that The electrochromic device further includes a first bus bar and a second bus bar; The first bus bar electrically connects the color-changing membrane and the first conductive segment, and the second bus bar electrically connects the color-changing membrane and the second conductive segment.

19. The electrochromic device according to claim 18, It is characterized in that The regulating circuit includes at least one first resistor connected in series between the first conductive segment and the second conductive segment.

20. The electrochromic device according to claim 16, It is characterized in that The regulating circuit includes at least one first resistor, which is at least one of a sliding resistor, a photoresistor and a thermistor.

21. The electrochromic device according to claim 16, It is characterized in that The regulating circuit comprises a plurality of switch units and a plurality of voltage dividing units, each of the switch units is electrically connected to at least one of the voltage dividing units, and at least two of the voltage dividing units are connected in parallel and in series with the color-changing membrane.

22. The electrochromic device according to claim 21, It is characterized in that The resistance values ​​of at least two of the voltage dividing units are not equal.

23. The electrochromic device according to claim 16, It is characterized in that The electrochromic device further includes a controller, and the adjustment circuit is integrated in the circuit board of the controller.

24. An electrochromic device characterized in that it includes a substrate layer and the electrochromic device according to any one of claims 16-23, and the substrate layer is laminated with the color-changing film.

25. The electrochromic device according to claim 24 characterized in that a packaging layer is provided on the outer peripheral edge of the color-changing film, and the adjustment circuit is accommodated in the packaging layer.

26. A terminal product characterized in that it includes the electrochromic device according to any one of claims 16-23 or the electrochromic device according to any one of claims 24-25, wherein the terminal product includes any one of a rearview mirror, a curtain wall, a car sunroof, a car side window, a car windshield, a housing of an electronic product, glasses, a means of transportation or a display panel.

Images