Electrochromic-device control method and apparatus, and storage medium and electrochromic-device control system

Abstract

The present application is applicable to the technical field of electrochromism. Provided are an electrochromic-device control method and apparatus, and a storage medium and an electrochromic-device control system. The method comprises: acquiring the degree of aging of an electrochromic device; on the basis of the degree of aging, determining charging parameters corresponding to the electrochromic device; and charging the electrochromic device on the basis of the charging parameters. By means of the method, electrochromic devices with different degrees of aging have corresponding charging / discharging parameters, such that charging parameters having different degrees of aging are used to compensate for the different degrees of aging, and the ranges of transmittance of the electrochromic devices are kept consistent, thereby improving the usage experience for a user.

Description

Electrochromic device control method, device, storage medium and control system

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application with application number 202311710891.5 filed with the Chinese Patent Office on December 13, 2023, entitled “A method, device, storage medium and control system for controlling an electrochromic device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application belongs to the field of electrochromic technology, and in particular relates to an electrochromic device control method, device, storage medium and control system. Background Art

[0004] The electrochromic device includes an electrochromic film, which includes a first conductive substrate, an EC (Electrochromic, electrochromic material) stacking layer, and a second conductive substrate stacked in sequence. The EC stacking layer will undergo a reversible color change when affected by the voltage of the conductive substrates at both ends. This phenomenon is called electrochromism.

[0005] Electrochromic devices will age after long-term use. Different electrochromic devices age to different degrees, resulting in inconsistent transmittance attenuation after aging, affecting the product experience.

[0006] Summary of the Invention

[0007] The embodiments of the present application provide an electrochromic device control method, device, storage medium, and control system, which can alleviate the problem of inconsistent transmittance attenuation of aged electrochromic devices and improve user experience.

[0008] In a first aspect, an embodiment of the present application provides a method for controlling an electrochromic device, comprising: obtaining an aging degree of the electrochromic device; determining charging parameters corresponding to the electrochromic device based on the aging degree; and controlling charging of the electrochromic device based on the charging parameters.

[0009] In a possible implementation of the first aspect, determining the charging parameters corresponding to the electrochromic device based on the degree of aging includes: when the degree of aging is less than or equal to a first preset value, the charging parameters include a first charging voltage; and / or, when the degree of aging is greater than the first preset value, the charging parameters include a second charging voltage, wherein the first charging voltage is less than the second charging voltage.

[0010] In a possible implementation manner of the first aspect, a difference between the second charging voltage and the first charging voltage is less than or equal to a difference between a maximum safe charging voltage and an initial charging voltage of the electrochromic device.

[0011] In a possible implementation of the first aspect, when the degree of aging is less than or equal to the first preset value, the charging of the electrochromic glass controlled according to the charging parameters includes: charging the electrochromic device with the first charging voltage, and stopping charging the electrochromic device when the capacity of the electrochromic device reaches the initial capacity of the electrochromic device; and / or, when the degree of aging is greater than the first preset value, the charging of the electrochromic glass controlled according to the charging parameters includes: charging the electrochromic device with the second charging voltage, and stopping charging the electrochromic device when the charging current of the electrochromic device reaches the cut-off current.

[0012] In a possible implementation of the first aspect, before the capacity of the electrochromic device reaches the initial capacity, the method further includes: if the charging current is less than a first preset current, or the charging time is greater than a first preset time, stopping charging the electrochromic device and determining new charging parameters corresponding to the electrochromic device.

[0013] In a possible implementation of the first aspect, when the aging degree is greater than the first preset value, the method further includes: obtaining a second aging degree based on a state corresponding to the aging degree of the electrochromic device; and determining new charging parameters corresponding to the electrochromic device based on the second aging degree.

[0014] In a possible implementation of the first aspect, determining the new charging parameters corresponding to the electrochromic device based on the second aging degree includes: when the second aging degree is less than or equal to a second preset value, the charging parameters include the second charging voltage; and / or, when the second aging degree is greater than a second preset value, the charging parameters include a third charging voltage, wherein the second preset value is equal to or not equal to the first preset value, and the second charging voltage is less than the third charging voltage.

[0015] In a possible implementation of the first aspect, when the degree of aging is greater than the second preset value, the method further includes: charging the electrochromic device with the third charging voltage, and stopping charging the electrochromic device when the capacity of the electrochromic device reaches the capacity of the electrochromic device.

[0016] In a possible implementation of the first aspect, before obtaining the degree of aging of the electrochromic device, the method further includes: when the current of the electrochromic device after charging or discharging to a preset time is less than a preset value, stopping charging or discharging the electrochromic device; obtaining the degree of aging of the electrochromic device includes: obtaining a characterization parameter of the electrochromic device when the current is less than or equal to the preset value after charging or discharging the electrochromic device to the preset time, and calculating the degree of aging of the electrochromic device based on the characterization parameter and the preset characterization parameter; and / or, obtaining a first transmittance corresponding to the electrochromic device when the charging current of the electrochromic device after charging to the preset time is less than or equal to the preset value, calculating the ratio of the first transmittance to the preset transmittance, and calculating the degree of aging of the electrochromic device based on the ratio.

[0017] In a possible implementation of the first aspect, obtaining the degree of aging of the electrochromic device includes: obtaining a first open-circuit voltage of the electrochromic device when the charging current is less than or equal to the preset value after the electrochromic device is discharged to the preset time, and calculating the degree of aging of the electrochromic device based on the first open-circuit voltage and the preset open-circuit voltage; and / or obtaining a first capacity value of the electrochromic device when the discharge current is less than or equal to the preset value after the electrochromic device is discharged to the preset time, and calculating the degree of aging of the electrochromic device based on the first capacity value and the preset capacity value.

[0018] In a possible implementation of the first aspect, the method further includes: obtaining discharge parameters of the electrochromic device; and controlling the discharge of the electrochromic device according to the discharge parameters, wherein when the electrochromic device is at different degrees of aging, the corresponding discharge parameters are the same.

[0019] In a second aspect, an embodiment of the present application provides an electrochromic device control device, comprising: a processor for obtaining the degree of aging of the electrochromic device; and determining charging parameters corresponding to the electrochromic device based on the degree of aging; and a controller for controlling the charging of the electrochromic device according to the charging parameters.

[0020] In a possible implementation of the second aspect, the processor is further configured to, when the degree of aging is less than or equal to a first preset value, the charging parameter includes a first charging voltage; and / or, when the degree of aging is greater than the first preset value, the charging parameter includes a second charging voltage, wherein the first charging voltage is less than the second charging voltage.

[0021] In a possible implementation manner of the second aspect, a difference between the second charging voltage and the first charging voltage is less than or equal to a difference between a maximum safe charging voltage and an initial charging voltage of the electrochromic device.

[0022] In a possible implementation of the second aspect, the controller is further used to charge the electrochromic device with the first charging voltage when the degree of aging is less than or equal to the first preset value, and stop charging the electrochromic device when the capacity of the electrochromic device reaches the initial capacity; and / or, when the degree of aging is greater than the first preset value, charge the electrochromic device with the second charging voltage, and stop charging the electrochromic device when the charging current of the electrochromic device reaches the cut-off current.

[0023] In a possible implementation of the second aspect, the processor is further used to update new charging parameters corresponding to the electrochromic device before the capacity of the electrochromic device reaches the initial capacity, if the charging current is less than a first preset current, or the charging time is greater than a first preset time; and use the new charging parameters as the charging parameters for the next time the controller charges the electrochromic device.

[0024] In a possible implementation of the second aspect, the processor is further used to obtain a second aging degree based on a state corresponding to the aging degree of the electrochromic device when the aging degree is greater than the first preset value; and determine a new charging parameter corresponding to the electrochromic device based on the second aging degree.

[0025] In a possible implementation of the second aspect, the processor is further configured to, when the second aging degree is less than or equal to a second preset value, configure the charging parameter to include the second charging voltage; and / or, when the second aging degree is greater than a second preset value, configure the charging parameter to include a third charging voltage, wherein the second preset value is equal to or different from the first preset value, and the second charging voltage is less than the third charging voltage.

[0026] In a possible implementation of the second aspect, the controller is further used to charge the electrochromic device with the third charging voltage when the aging degree is greater than the second preset value, and stop charging the electrochromic device when the capacity of the electrochromic device reaches the initial capacity.

[0027] In a possible implementation of the second aspect, the controller is further used to stop charging the electrochromic device before obtaining the degree of aging of the electrochromic device when the charging current of the electrochromic device after charging for a preset time is less than or equal to a preset value; and the processor is further used to obtain the actual capacity of the electrochromic device when the charging current is less than the preset value after charging the electrochromic device for the preset time, and calculate the degree of aging of the electrochromic device based on the actual capacity and the preset capacity value; and / or, the processor is further used to obtain the first transmittance corresponding to the electrochromic device when the charging current is less than or equal to the preset value after charging the electrochromic device for the preset time, calculate the ratio of the first transmittance to the preset transmittance, and calculate the degree of aging of the electrochromic device based on the ratio.

[0028] In a possible implementation of the second aspect, the processor is further used to obtain discharge parameters of the electrochromic device; the controller is further used to control the discharge of the electrochromic device according to the discharge parameters, wherein when the electrochromic device is at different degrees of aging, the corresponding discharge parameters are the same.

[0029] In a third aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the electrochromic device control method described in any one of the first aspects above is implemented.

[0030] In a fourth aspect, an embodiment of the present application further provides a control system for an electrochromic device, comprising a terminal platform and an electrochromic device control device as described in any one of the second aspects above; information exchange is performed between the terminal platform and the control device of the electrochromic device.

[0031] In a fifth aspect, an embodiment of the present application provides a computer program product. When the computer program product is run on a terminal device, the terminal device executes the electrochromic device control method described in any one of the first aspects above.

[0032] The beneficial effects of the embodiments of the present application compared with the prior art are: the embodiments of the present application provide a method for controlling an electrochromic device, which executes different charging control methods according to different aging degrees (different charging control methods are suitable for different aging degrees of electrochromic devices), so that electrochromic devices with different aging degrees have corresponding charging and discharging parameters, so that charging parameters different from the aging degree compensate for the different aging degrees, so that the transmittance range of each electrochromic device remains consistent, thereby improving the user experience.

[0033] It can be understood that the beneficial effects of the second to fifth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0035] FIG1 is a schematic diagram of an electrochromic device control device provided in one embodiment of the present application;

[0036] FIG2 is a schematic diagram of a control system of an electrochromic device provided in one embodiment of the present application;

[0037] FIG3 is a flow chart of a method for controlling an electrochromic device according to an embodiment of the present application;

[0038] FIG4 is a schematic diagram showing the relationship between bright state transmittance and capacity value according to an embodiment of the present application;

[0039] FIG5 is a schematic diagram showing the relationship between bright-state transmittance and open-circuit voltage according to an embodiment of the present application;

[0040] FIG6 is a schematic flow chart of a method for controlling an electrochromic device according to another embodiment of the present application;

[0041] FIG. 7 is a schematic diagram illustrating test results of a charging test performed on a plurality of aged electrochromic device samples based on a preset transmittance requirement according to an embodiment of the present application. DETAILED DESCRIPTION

[0042] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may 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 obscuring the description of the present application with unnecessary detail.

[0043] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.

[0044] It will also be understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0045] As used in this specification and the appended claims, the term "if" can be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0046] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0047] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0048] The electrochromic device involved in each embodiment of the present application includes an electrochromic film, which includes a first conductive substrate, an electrochromic stacking layer, and a second conductive substrate stacked in sequence. The electrochromic stacking layer undergoes a reversible color change when affected by the voltage between the two conductive substrates, a phenomenon known as electrochromism. The electrochromic stacking layer includes an electrochromic material layer, an electrolyte layer, and an ion storage layer. The first and second conductive substrates each include a substrate layer and a conductive layer. The substrate layer is made of a flexible transparent material such as PET or PC; the conductive layer is made of a conductive oxide such as ITO.

[0049] The electrochromic device further includes a first substrate and a second substrate, wherein the electrochromic film is disposed between the first substrate and the second substrate, and the electrochromic film and the first substrate and the second substrate are sealed by PVB bonding.

[0050] The inventors have discovered that after long-term use, electrochromic devices will age to different degrees, and the transmittance attenuation of electrochromic devices with different aging degrees is inconsistent, affecting the user experience.

[0051] Specifically, this application provides the following embodiments to solve the above technical problems.

[0052] Referring to FIG. 1 , an embodiment of the present application provides an electrochromic device control device 10 , including a processor 101 and a controller 102 .

[0053] Processor 101 is used to obtain the degree of aging of the electrochromic device; and determine the charging parameters corresponding to the electrochromic device based on the degree of aging; each electrochromic device corresponds to a control device, and the control device obtains the degree of aging of the electrochromic device corresponding thereto. The degree of aging can be fed back by optical data of the electrochromic device, or the electrical data corresponding to the electrochromic device can be used to characterize its degree of aging, and the charging parameters are determined based on the degree of aging.

[0054] Charging parameters may include, but are not limited to, charging conditions and cut-off conditions. Charging conditions include charging voltage, and cut-off conditions include cut-off current, cut-off time, cut-off capacity, etc.

[0055] In the embodiment of the present application, the degree of aging is calculated based on the initial state of the electrochromic device. When optical parameters are used to characterize the degree of aging, the difference ΔT between the transmittance value T1 when fully charged to the bright state after aging and the transmittance T0 when fully charged to the bright state in the initial state (the state of the device when it leaves the factory) is subtracted, and the degree of aging is ΔT / T0.

[0056] When optical parameters are used to characterize the degree of aging, the difference ΔQ between the corresponding capacity Q1 when fully charged to the bright state after aging and the transmittance Q0 when fully charged to the bright state in the initial state (the state of the device when it leaves the factory) is ΔQ / Q0.

[0057] The controller 102 is configured to control charging of the electrochromic device according to the charging parameters.

[0058] In summary, the above method can execute different charging control methods according to different aging degrees (different charging control methods are suitable for different aging degrees of electrochromic devices), so that electrochromic devices with different aging degrees have corresponding charging and discharging parameters, so that the charging parameters different from the aging degree can compensate for the different aging degrees, so that the transmittance range of each electrochromic device remains consistent, thereby improving the user experience.

[0059] In a further improvement based on the above embodiment, the processor 101 is further used to, when the aging degree is less than or equal to a first preset value, the charging parameter includes a first charging voltage; and / or, when the aging degree is greater than the first preset value, the charging parameter includes a second charging voltage, wherein the first charging voltage is less than the second charging voltage.

[0060] Exemplarily, the first preset value is set to 30%. The inventors found that after the device has attenuated by 30%, the same charging parameters, such as the same charging voltage, cannot achieve the same capacity and the same transmittance even after long-term charging. Therefore, in the present application, when the attenuation is within the first preset value, the same charging voltage is used for charging, and the capacity or time is used as the cutoff condition, so that the final transmittance of the electrochromic device can be kept within the same range, thereby keeping the transmittance consistent and improving the user experience. When the aging degree is greater than 30%, that is, the charging voltage used at an aging degree of 30% cannot meet the requirements; at this time, by increasing the charging voltage, the transmittance and capacity of the electrochromic device can meet the requirements. Regardless of the degree of aging, the electrochromic device can meet the user's usage needs. In other embodiments, the first preset value can be set according to user experience requirements.

[0061] In an improvement based on any of the above embodiments, the difference between the second charging voltage and the first charging voltage is less than or equal to the difference between the maximum safe charging voltage and the initial charging voltage of the electrochromic device.

[0062] The maximum safe charging voltage is the voltage at which a device can be charged without damaging it. This value varies for different materials and is also affected by the size of the device. Generally speaking, the safe voltage for black electrochromic devices is 1.6V, and for blue electrochromic devices it is 1.2V. The initial charging voltage is the charging voltage at which the device is first put into use. To prevent device aging, the initial charging voltage of electrochromic devices is set lower than the safe voltage. In other words, the charging voltage will not exceed the maximum safe charging voltage, and any increased charging voltage will not exceed the maximum safe voltage.

[0063] In an improvement based on any of the above embodiments, the controller 102 is further configured to charge the electrochromic device at the first charging voltage when the degree of aging is less than or equal to the first preset value, and to stop charging the electrochromic device when the capacity of the electrochromic device reaches the initial capacity. In this embodiment, when the processor determines whether the degree of aging of the electrochromic device is less than or equal to the first preset value, it sends a signal to the controller, causing the controller to control the electrochromic device to charge the electrochromic device at the first charging voltage based on the signal. Preferably, the control device further includes a current detector and a current integrator, which integrate the charging current and calculate the capacity charged to the electrochromic device. In this embodiment, since the degree of aging of the device is within the first preset value range, the capacity of the electrochromic device can be adjusted by extending the charging time or reducing the cutoff current to meet user needs. Therefore, the capacity can be used as the cutoff condition for charging and discharging, ensuring that the charge Q in each electrochromic device reaches the same value, thereby maintaining consistent transmittance across the electrochromic devices and improving the user experience. In addition, when the capacity reaches the initial capacity, charging is stopped to avoid overcharging of the electrochromic device and affecting the service life of the device.

[0064] It should be noted that in the aforementioned embodiments, the description is based on full charging and full discharging of the electrochromic device. When the electrochromic device has gears, the charging control strategy can be determined according to different gears. Improvements are made on the basis of the aforementioned embodiments, and the charging of the electrochromic glass according to the charging parameter control also includes: charging the electrochromic device with the first charging voltage, and stopping charging the electrochromic device when the capacity of the electrochromic device reaches a first preset condition. The first preset condition is related to the initial capacity. The first preset condition includes: the amount of electricity of the electrochromic device is equal to the initial capacity Q or q times the initial capacity Q, where q<1. The electrochromic device is divided into multiple gears according to the size of the transmittance. For example, the initial capacity is Q. If the electrochromic device is in the full gear and the first charging control method is used, it is necessary to extend the charging time to increase the charging capacity so that it is equal to the initial capacity Q. When the electrochromic device is in the middle gear and the first charging control method is used, it is necessary to extend the charging time to increase the charging capacity so that it is equal to the initial capacity nQ / m, where n is the current gear number of the electrochromic device and m is the total gear number of the electrochromic device.

[0065] Based on any of the above embodiments, the controller 102 is further configured to charge the electrochromic device at the second charging voltage when the degree of aging is greater than the first preset value, and to stop charging the electrochromic device when the charging current of the electrochromic device reaches the cutoff current. In this embodiment, the degree of aging can be determined in the same manner as in the above embodiments, and will not be described in detail here. The difference from the above embodiments is that when the degree of aging of the electrochromic device is greater than the first preset value, it means that the required amount of electricity cannot be achieved by reducing the cutoff current or extending the time. Therefore, by increasing the charging voltage, the electrochromic device is operated at a relatively high voltage so that the device can meet the user's usage needs. At this stage, the current is cut off, so that the electrochromic device is fully charged at this charging voltage, thereby preventing the electrochromic device from being overcharged at this charging voltage, which affects the device life.

[0066] In an improvement based on any of the above embodiments, the controller 102 is further configured to charge the electrochromic device at the second charging voltage when the degree of aging is greater than the first preset value, and to stop charging the electrochromic device when the capacity of the electrochromic device reaches the initial capacity. In this embodiment, in addition to the above cutoff conditions, the cutoff condition may also be based on capacity.

[0067] In an improvement based on any of the above embodiments, the processor is further configured to update new charging parameters for the electrochromic device before the capacity of the electrochromic device reaches the initial capacity, if the charging current is less than a first preset current, or if the charging duration is greater than the first preset duration, and use the new charging parameters as the charging parameters for the next charging of the electrochromic device by the controller. In this embodiment, if the charging current is less than the first preset current, the first preset current can be set according to the specific needs of the device, such as 10 mA, 5 mA, 0 mA, etc.; if the charging current is less than the first preset current after the preset charging time, the electrochromic device cannot be further charged; or if the charging duration is greater than the first preset duration, the electrochromic device cannot be further charged. Continuing to charge at the same voltage is meaningless and cannot meet the user's needs. Therefore, the processor updates the charging parameters at this time and uses them as the charging parameters for the next charging cycle, so that the electrochromic device can reach a state that meets the user's needs. Preferably, the charging parameters are updated by increasing the charging voltage.

[0068] In an improvement based on any of the above embodiments, the processor 101 is further configured to, when the aging level exceeds the first preset value, obtain a second aging level based on a state corresponding to the aging level of the electrochromic device; and determine new charging parameters corresponding to the electrochromic device based on the second aging level. In this embodiment, when the aging level of the device relative to the initial state exceeds the first preset value, the charging voltage is increased. Since the charging voltage is changed, the device is in a new state. Therefore, the aging level of the device under continued use is evaluated based on the current device state. For example, if the initial capacity of the electrochromic device is 100 mAh and the first preset value is 30%, then when the aging level of the electrochromic device equals the first preset value, the corresponding capacity is 70 mAh. Therefore, the aging level of the electrochromic device is calculated based on the 70 mAh capacity.

[0069] Based on any of the above embodiments, improvements are made, and the processor 101 is further used to, when the second aging degree is less than or equal to a second preset value, the charging parameter includes the second charging voltage; and / or, when the second aging degree is greater than the second preset value, the charging parameter includes a third charging voltage, wherein the second preset value is equal to or unequal to the first preset value, and the second charging voltage is less than the third charging voltage. In this embodiment, under different aging degrees based on the initial state, the entire device can be divided into a first stage and a second stage according to the aging degree, and different driving voltages are used in the two stages, so that the entire charging logic is more suitable for different states of the device. In this embodiment, the processor divides the electrochromic device into multiple different stages according to different aging degrees, and the charge and discharge voltages corresponding to different stages are inconsistent, so that the entire charging logic is more consistent with the entire life cycle of the device, which has the advantages of extending the service life of the device and improving user experience.

[0070] Based on any of the above embodiments, the controller 102 is improved, and is further used to charge the electrochromic device with the third charging voltage when the aging degree is greater than the second preset value, and stop charging the electrochromic device when the capacity of the electrochromic device reaches the initial capacity.

[0071] Based on any of the above embodiments, the controller 102 is further configured to, before obtaining the degree of aging of the electrochromic device, stop charging or discharging the electrochromic device when the current of the electrochromic device after charging or discharging for a preset time is less than or equal to a preset value; it is worth noting that in the embodiments of the present application, the comparison of the current magnitude is a comparison of the absolute value of the current. In addition, the processor 101 is further configured to obtain a characterization parameter of the electrochromic device when the current is less than the preset value after charging the electrochromic device for the preset time, and calculate the degree of aging of the electrochromic device based on the characterization parameter and the preset characterization parameter. In this embodiment, the characterization parameter includes open circuit voltage and / or capacity. By detecting the capacity value corresponding to full charge or full discharge, the preset capacity value can be the standard capacity of the same type of electrochromic device or the initial capacity of the electrochromic device. A preset capacity value can be stored in the controller's memory. Periodically testing the actual capacity of the electrochromic device can be used to periodically monitor the aging of the device. This allows the controller to promptly assess the aging status and adjust charging parameters to accommodate the electrochromic device at different stages of its life. The specific interval testing time can be set arbitrarily based on user needs and usage habits.

[0072] Based on any of the above embodiments, the processor 101 is further configured to obtain a first transmittance corresponding to the electrochromic device when the charging current after charging the electrochromic device to the preset time is less than or equal to the preset value, that is, to detect the transmittance value corresponding to full charge or full discharge, calculate the ratio of the first transmittance to the preset transmittance, and calculate the degree of aging of the electrochromic device based on the ratio. In this embodiment, the preset transmittance can be a standard maximum transmittance pre-stored in a memory or an initial maximum transmittance of the electrochromic device. That is, the limit transmittance of the electrochromic device that meets the user's usage requirements. The transmittance of the electrochromic device can be detected by a transmittance meter installed on the electrochromic device. Since the user's intuitive feeling is the transmittance, reflecting the degree of aging by detecting the transmittance is more in line with the user's intuitive feeling. The purpose of regularly detecting the transmittance is to determine the degree of aging of the electrochromic device. The specific beneficial effects are the same as those described above and will not be discussed here one by one.

[0073] Based on any of the above embodiments, an improvement is made, wherein the processor 101 is further used to obtain discharge parameters of the electrochromic device; the controller is further used to control the discharge of the electrochromic device according to the discharge parameters, wherein when the electrochromic device is at different degrees of aging, the corresponding discharge parameters are the same.

[0074] The inventors found that in actual use, device attenuation is mainly reflected in the charging process, and the charging and discharging parameters of the discharge process do not affect the specific value of the color change end point; therefore, during the discharge process, different degrees have little effect on the discharge parameters, so using the same discharge parameters can make the entire control logic simpler and easier to implement.

[0075] Please refer to Figure 2. An embodiment of the present application also provides a control system 30 for an electrochromic device, including a terminal platform 20 and a control device 10 for the electrochromic device as described in any of the above embodiments, and information exchange is performed between the terminal platform 20 and the control device 10 for the electrochromic device.

[0076] There is no particular limitation on the type of the terminal platform 20. In some embodiments, the terminal platform 20 may include a remote controller, a mobile terminal device, or a central control system of a vehicle.

[0077] In some embodiments, the terminal platform 20 can exchange information with the processor 101 and / or the controller 102 in the control device 10 of the electrochromic device.

[0078] In the embodiments provided in this 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 merely a logical functional division. In actual implementation, they can be fully or partially integrated into one physical entity, or physically separated. There can also be other division methods, such as multiple devices or units can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or device, which can be electrical or other forms.

[0079] Please refer to FIG3 , which shows a method for controlling an electrochromic device according to an embodiment of the present application. The method may specifically include steps 301 to 303 .

[0080] Step 301: Obtain the aging degree of the electrochromic device.

[0081] Step 302: Determine charging parameters corresponding to the electrochromic device based on the aging degree.

[0082] Here, different charging parameters can be determined for different degrees of aging. Charging parameters may include, but are not limited to, charging conditions and cut-off conditions. Charging conditions include charging voltage, while cut-off conditions include cut-off current, cut-off time, cut-off capacity, etc.

[0083] Step 303: charging the electrochromic device based on the charging parameter control.

[0084] Finally, the determined charging parameters can be used to control the charging of the electrochromic device.

[0085] In summary, the above method can execute different charging control methods according to different aging degrees (different charging control methods are suitable for different aging degrees of electrochromic devices), so that electrochromic devices with different aging degrees have corresponding charging and discharging parameters, so that the charging parameters different from the aging degree can compensate for the different aging degrees, so that the transmittance range of each electrochromic device remains consistent, thereby improving the user experience.

[0086] In one embodiment, before obtaining the aging degree of the electrochromic device in step 301, the method further includes: when the current of the electrochromic device after charging or discharging for a preset time is less than a preset value, stopping charging or discharging the electrochromic device; then, obtaining the characterization parameters of the electrochromic device when the current is less than a preset value after charging or discharging the electrochromic device for a preset time, and calculating the aging degree of the electrochromic device based on the ratio of the characterization parameters to the preset characterization parameters.

[0087] That is, the characteristic parameters include open-circuit voltage and / or capacitance. In this embodiment, the electrochromic device is considered fully charged when the charging current is less than a preset value after the electrochromic device has been charged for a preset time. The actual capacity under this condition is compared with the preset capacity value, and the degree of aging of the electrochromic device is calculated based on the ratio.

[0088] The above-mentioned preset time and preset value can be set according to user requirements.

[0089] In one embodiment, before obtaining the degree of aging of the electrochromic device in step 301, the method further includes: when the current of the electrochromic device after charging for a preset time is less than a preset value, stopping charging the electrochromic device; then, obtaining the first transmittance corresponding to the electrochromic device when the charging current of the electrochromic device after charging for a preset time is less than a preset value, calculating the ratio of the first transmittance to the preset transmittance, and calculating the degree of aging of the electrochromic device based on the ratio.

[0090] That is, in this embodiment, the precondition is that the charging current of the electrochromic device is less than a preset value after being charged for a preset time, and the first transmittance under this precondition is compared with the preset transmittance, and then the aging degree of the electrochromic device is calculated based on the ratio.

[0091] The above preset time and preset value can be set according to needs.

[0092] In some preferred embodiments of the present application, obtaining the degree of aging of the electrochromic device includes: obtaining a first open-circuit voltage of the electrochromic device when the current is less than or equal to a preset value after the electrochromic device is discharged for a preset time, and calculating the degree of aging of the electrochromic device based on the first open-circuit voltage and the preset open-circuit voltage. The inventors have discovered that during the use of an aged electrochromic device, when the device is charged to a bright state, its achievable maximum transmittance decreases, but the corresponding OCV remains unchanged. Furthermore, the minimum transmittance corresponding to discharge remains unchanged, but the corresponding OCV changes. However, transmittance is difficult to obtain, and there is interference from glass on the transmittance of the membrane. Therefore, obtaining electrical parameters is more convenient. Therefore, the ratio or difference between the electrical characteristic parameters corresponding to discharge and the electrical characteristic parameters corresponding to the initial state can better reflect the degree of aging of the electrochromic device. In the embodiments of the present application, using discharge parameters makes it easier to determine the degree of device aging.

[0093] And / or, obtaining a first capacity value of the electrochromic device when the discharge current is less than or equal to the preset value after the electrochromic device is discharged to the preset time, and calculating the aging degree of the electrochromic device based on the first capacity value and the preset capacity value.

[0094] In some preferred embodiments of the present application, the relationship between the capacity value and the transmittance can be obtained in advance.

[0095] First, a large number of electrochromic device samples can be tested to obtain the relationship between the bright state transmittance and the capacity value (the capacity value corresponding to full charge or full discharge).

[0096] Please refer to Figure 4, which shows the bright state transmittance T C and capacity value Q C Then, according to the corresponding relationship in FIG4 , it can be determined whether the electrochromic device is aged. It should be noted that the capacity value Q C The larger the value, the corresponding bright state transmittance T C The larger the capacity value Q C The smaller the value, the corresponding bright state transmittance T C The smaller the value, the smaller the value. The aging of electrochromic devices is mainly manifested in the decrease of transmittance. Therefore, here we can use the bright state transmittance T C and capacity value Q C By detecting the electrical parameters of the electrochromic device, which are relatively easy to obtain, it is easier to obtain the current aging degree of the electrochromic device.

[0097] The preset transmittance may be a standard transmittance set to meet transmittance requirements. For example, if the bright state transmittance is above 5% and the user experience is good, the preset transmittance may be 5%.

[0098] Specifically, the first transmittance of the electrochromic device may be determined based on the detected open-circuit voltage corresponding to the electrochromic device being fully discharged to a dark state.

[0099] First, a large number of electrochromic device samples can be tested in advance to obtain the relationship between the bright state transmittance and the open circuit voltage (the open circuit voltage corresponding to the electrochromic device sample being fully discharged to the dark state).

[0100] Please refer to Figure 5, which shows the bright state transmittance T C and open circuit voltage OCV D According to the corresponding relationship in FIG5 , it is determined whether the electrochromic device is aged. It should be noted that the open circuit voltage OCV D The larger the value, the corresponding bright state transmittance T C The smaller the open circuit voltage OCV D The smaller the value, the corresponding bright state transmittance T C The larger the value, the greater the aging of electrochromic devices. The main manifestation of aging is the decrease in transmittance. Therefore, here we can use the bright state transmittance T C and open circuit voltage OCV D The corresponding relationship is used to determine the first transmittance.

[0101] The preset transmittance may be a standard transmittance set to meet transmittance requirements. For example, if the bright state transmittance is above 5% and the user experience is good, the preset transmittance may be 5%.

[0102] In one embodiment, the above step 301 of obtaining the degree of aging of the electrochromic device may specifically include: determining a first transmittance corresponding to the capacity value based on a previously obtained correspondence between the bright-state transmittance and the capacity value; determining the degree of aging of the electrochromic device based on the attenuation degree of the first transmittance and the preset transmittance, or determining a second bright-state transmittance corresponding to the open-circuit voltage based on a previously obtained correspondence between the bright-state transmittance and the open-circuit voltage; and determining the degree of aging of the electrochromic device based on the attenuation degree of the second bright-state transmittance and the preset transmittance. The transmittance of the electrochromic device may also be measured using a transmittance meter, preferably by measuring the electrical parameters of the electrochromic device, to facilitate obtaining the transmittance of the electrochromic device.

[0103] For example, Figure 4 shows the pre-acquired correspondence between the bright-state transmittance and the capacitance value. Using this correspondence, the first transmittance corresponding to the capacitance value of the electrochromic device can be determined. The degree of aging of the electrochromic device can then be determined based on the attenuation of the first transmittance and the preset transmittance. For example, if the first transmittance is 4% and the preset transmittance is 5%, the attenuation can be calculated to be 20%, and accordingly, the degree of aging of the electrochromic device is 20%.

[0104] Similarly, Figure 5 shows the previously acquired relationship between the bright-state transmittance and the open-circuit voltage. Using this relationship, the first transmittance corresponding to the open-circuit voltage of the electrochromic device can be determined. The degree of aging of the electrochromic device can then be determined based on the attenuation of the first transmittance and the preset transmittance. For example, if the first transmittance is 3% and the preset transmittance is 5%, the attenuation can be calculated to be 40%, corresponding to the aging of the electrochromic device being 40%.

[0105] Of course, in other embodiments, the first transmittance of the electrochromic device may be determined directly using a transmittance meter, and this application does not limit this.

[0106] In one embodiment, the present application provides two different charging control methods, which can be specifically distinguished by the degree of aging as a first value. For example, when the degree of aging of the electrochromic device is less than or equal to a first preset value, charging is performed using the first charging control method. When the degree of aging of the electrochromic device is greater than the first preset value, charging is performed using the second charging control method.

[0107] The first preset value may be 20%, 30%, or 40%, which is not limited in this application.

[0108] When the aging degree is less than or equal to a first preset value, the charging parameter includes a first charging voltage; and / or when the aging degree is greater than the first preset value, the charging parameter includes a second charging voltage, wherein the first charging voltage is less than the second charging voltage.

[0109] That is, different charging voltages are used in different charging control modes.

[0110] Exemplarily, the first preset value is set to 30%. The inventors found that after the device has attenuated by 30%, the same charging parameters, such as the same charging voltage, cannot achieve the same capacity and the same transmittance even after long-term charging. Therefore, in the present application, when the attenuation is within the first preset value, the same charging voltage is used for charging, and the capacity or time is used as the cutoff condition, so that the final transmittance of the electrochromic device can be kept within the same range, thereby keeping the transmittance consistent and improving the user experience. When the degree of aging is greater than 30%, that is, the charging voltage used at an aging degree of 30% cannot meet the requirements, the transmittance and capacity of the electrochromic device can be increased by increasing the charging voltage. This allows the electrochromic device, regardless of the degree of aging, to meet the user's usage needs. In other embodiments, the first preset value can be set according to user experience requirements.

[0111] Specifically, the first charging control method may use the initial capacity of the electrochromic device as the charging cutoff condition. Specifically, the cutoff current may be reduced based on the set cutoff current, thereby extending the charging time of the electrochromic device so that the charged capacity of the electrochromic device is equal to the initial capacity of the electrochromic device.

[0112] It should be noted that when the aging degree of the electrochromic device is less than a first preset value, it can be indicated that the electrochromic device is currently in the early stage of aging. The first charging control method can be specifically as follows: charging the electrochromic device with a first charging voltage, and when the capacity of the electrochromic device reaches the initial capacity, stopping charging the electrochromic device.

[0113] That is, the electrochromic device adopts the first charging control method in the early stage of aging. Without changing the charging voltage, the charging capacity is increased by reducing the cut-off current and extending the charging time to make it equal to the initial capacity.

[0114] It should be noted that, during the charging control process using the first charging control method, if it is detected that the charging current is less than the first preset current, or the charging time is greater than the first preset time, the charging of the electrochromic device is stopped, and the new charging parameters corresponding to the electrochromic device are determined.

[0115] That is, during the process of charging the electrochromic device using the first charging control method, if it is detected that the charging time of the electrochromic device is greater than the first preset time or the charging current of the electrochromic device is less than the first preset current value, then during the next charging control, the second charging control method is used to continue charging (the second charging control method is described in subsequent embodiments). It can also be understood that at this time, the new charging parameters include the second charging voltage (the second charging voltage is greater than the first charging voltage).

[0116] The first preset duration mentioned above can be 300s / m 2 , 400s / m 2 .s / m 2 Indicates the number of seconds per square meter of charging time. The preset duration is set based on the area of ​​the electrochromic device. The first preset current value can be 0mA (milliamperes), 5mA, or 10mA, and this application does not limit the value.

[0117] In this embodiment, since the device aging degree is within a first preset range, the capacity of the electrochromic device can be adjusted by extending the charging time or reducing the cutoff current to meet the user's needs. Therefore, using capacity as the cutoff condition for charging and discharging allows the charge Q within each electrochromic device to reach the same value, thereby maintaining consistent transmittance across all electrochromic devices and improving the user experience. Furthermore, charging is stopped when the capacity reaches the initial capacity, preventing overcharging of the electrochromic device and shortening its service life.

[0118] The second charging control method is to increase the charging voltage based on the previous charging voltage, and charge the electrochromic device with the increased charging voltage.

[0119] That is, the second charging control method may specifically be: charging the electrochromic device with the second charging voltage, and stopping charging the electrochromic device when the charging current of the electrochromic device reaches the cut-off current.

[0120] In an embodiment of the present application, when the degree of aging of the electrochromic device is greater than a first preset value, it can be characterized that the electrochromic device is currently in the late stage of aging. At this time, a second charging voltage is adopted, and charging is first performed with the cutoff current as the charging stop condition. Specifically, when the degree of aging of the electrochromic device is greater than the first preset value, it means that the required amount of electricity cannot be achieved by reducing the cutoff current or by extending the time. Therefore, by increasing the charging voltage, the electrochromic device is at a relatively high voltage so that the device can meet the user's usage needs. At this stage, the current is cut off, so that the electrochromic device is fully charged at this charging voltage, and the electrochromic device is prevented from being overcharged at this charging voltage, which affects the life of the device.

[0121] It is understandable that the electrochromic device adopts the second charging control method in the later stage of aging. By charging the electrochromic device by increasing the charging voltage, its transmittance can be restored.

[0122] In the embodiment of the present application, the specific value of the increase in the charging voltage of the electrochromic device each time can be set according to needs, for example, it can be 0.1V, 0.05V, etc., and this application does not limit it.

[0123] It should be noted that in the aforementioned embodiments, the description is based on full charging and full discharging of the electrochromic device. When the electrochromic device has gears, the charging control strategy can be determined according to different gears. Improvements are made on the basis of the aforementioned embodiments, and the charging of the electrochromic glass according to the charging parameter control also includes: charging the electrochromic device with the first charging voltage, and stopping charging the electrochromic device when the capacity of the electrochromic device reaches a first preset condition. The first preset condition is related to the initial capacity. The first preset condition includes: the amount of electricity of the electrochromic device is equal to the initial capacity Q or q times the initial capacity Q, where q<1. The electrochromic device is divided into multiple gears according to the size of the transmittance. For example, the initial capacity is Q. If the electrochromic device is in the full gear and the first charging control method is used, it is necessary to extend the charging time to increase the charging capacity so that it is equal to the initial capacity Q. When the electrochromic device is in the middle gear and the first charging control method is used, it is necessary to extend the charging time to increase the charging capacity so that it is equal to the initial capacity nQ / m, where n is the current gear number of the electrochromic device and m is the total gear number of the electrochromic device.

[0124] Optionally, in one embodiment, the difference between the second charging voltage and the first charging voltage is less than or equal to the difference between the maximum safe charging voltage and the initial charging voltage of the electrochromic device. In this way, the entire charging process is ensured to be safe and controllable.

[0125] The maximum safe charging voltage is the voltage at which a device can be charged without damaging it. This value varies for different materials and is also affected by the size of the device. Generally speaking, the safe voltage for black electrochromic devices is 1.6V, and for blue electrochromic devices it is 1.2V. The initial charging voltage is the charging voltage at which the device is first put into use. To prevent device aging, the initial charging voltage of electrochromic devices is set lower than the safe voltage. In other words, the charging voltage will not exceed the maximum safe charging voltage, and any increased charging voltage will not exceed the maximum safe voltage.

[0126] Optionally, in one embodiment, the method further includes: obtaining discharge parameters of the electrochromic device; and controlling discharge of the electrochromic device according to the discharge parameters, wherein the discharge parameters corresponding to the electrochromic device are the same when the electrochromic device is at different aging levels.

[0127] That is, the electrochromic device control method provided in the embodiment of the present application can determine different charging parameter controls according to the aging degree of the electrochromic device, but the discharge can be controlled using the same discharge parameter.

[0128] In addition, after charging the electrochromic device based on the charging control method corresponding to the aging degree, the method also includes: repeatedly obtaining the aging degree of the electrochromic device; determining the charging parameters corresponding to the electrochromic device according to the aging degree; and controlling the charging of the electrochromic device according to the charging parameters.

[0129] In other words, the embodiments of the present application provide periodic charging control. At regular intervals, the electrochromic device can be tested for aging and different charging controls can be implemented based on the degree of aging. It should be noted that each cycle can be based on the data from the previous cycle or the first charging data, and this application does not limit this.

[0130] That is, when the aging degree is greater than the first preset value and after one charge is performed, the method also includes: obtaining a second aging degree based on the state corresponding to the aging degree of the electrochromic device; and determining new charging parameters corresponding to the electrochromic device according to the second aging degree.

[0131] The second aging degree here is the re-detected aging degree. In this embodiment, when the aging degree of the device based on the initial state is greater than the first preset value, the charging voltage is increased. Since the charging voltage is changed, the device is equivalent to a new state. Therefore, the aging degree of the device under this benchmark is evaluated based on the current device state. For example, if the initial capacity of the electrochromic device is 100 mAh and the first preset value is 30%, then when the aging degree of the electrochromic device is equal to the first preset value, the corresponding capacity is 70 mAh; then the aging degree of the electrochromic device is calculated based on the capacity of 70 mAh.

[0132] Then, when the second aging degree is less than or equal to a second preset value, the charging parameter includes a second charging voltage; and / or, when the second aging degree is greater than the second preset value, the charging parameter includes a third charging voltage, wherein the second preset value is equal to or different from the first preset value, and the second charging voltage is less than the third charging voltage.

[0133] That is, here, it is possible to re-judge whether the electrochromic device is in the early or late stage of aging, and perform charging control according to the first charging control method corresponding to the early stage of aging, or perform charging control according to the second charging control method corresponding to the late stage of aging.

[0134] At this time, when it is detected that the aging degree is greater than the second preset value, the method further includes: charging the electrochromic device with a third charging voltage, and stopping charging the electrochromic device when the capacity of the electrochromic device reaches the initial capacity.

[0135] In other words, in the late stage of aging, the current cutoff is first used as the charging cutoff condition. If the aging degree cannot be effectively adjusted, the capacity cutoff is then used as the charging cutoff condition.

[0136] In this embodiment, the entire device can be divided into a first and second stage based on the degree of aging, based on the initial state. These two stages utilize different drive voltages, making the overall charging logic more adaptable to the different states of the device. In this embodiment, the processor divides the electrochromic device into multiple stages based on the degree of aging. The corresponding charge and discharge voltages for each stage are different, making the overall charging logic more consistent with the entire device lifecycle, thereby extending the device's service life and improving the user experience.

[0137] The above charging control process is described below with a specific example.

[0138] Step 1: Initial state.

[0139] Get the initial state of the electrochromic device, and use U C1 Charging, I C1 As the cut-off current, it reaches the initial bright state, at which time the open circuit voltage of the electrochromic device is OCV C1 , the corresponding capacity Q C1 , the corresponding transmittance is T C1 Similarly, with U D1 Charging, I D1 As the cut-off current, it reaches the initial bright state, at which time the open circuit voltage of the electrochromic device is OCV D1 , the corresponding capacity Q D1 , the corresponding transmittance is T D1 .

[0140] Step 2: Regular testing.

[0141] Periodically (e.g., every other month), charge or discharge to the same conditions as the initial state, and test the OCV (open circuit voltage) and Q (capacity value) of the electrochromic device corresponding to each state.

[0142] It should be noted that, assuming that the transmittance with better user experience is Tc0 (preset transmittance), the corresponding OCV is D0 (corresponding to the initial open circuit voltage of the electrochromic device in its initial state) and Q D0 (corresponding to the initial capacity value of the electrochromic device in the initial state).

[0143] When OCV Dn >OCV D0and Q Dn D0 According to the above embodiment, it can be divided into the early aging stage and the late aging stage.

[0144] Step 3: Early aging stage: Determine whether the OCV is less than or equal to 0V, and then determine whether the attenuation level is less than or equal to the first preset value.

[0145] OCV Dn When the voltage is less than or equal to 0V, that is, when the discharge is fully discharged, the corresponding OCV is less than or equal to 0. The inventors found that the aging degree of the electrochromic device is less than or equal to 30% at this time. Dn or Q Cn The corresponding transmittance is within 30% of the initial attenuation, that is, the aging degree is within 30%. At this time, by adjusting the cutoff current and extending the charging time, the capacity value is increased and the bright state transmittance is improved (extending the charging time will reduce the cutoff current). Obtaining the aging degree of the electrochromic device also includes: obtaining the open circuit voltage of the electrochromic device when the electrochromic device is fully discharged. If the open circuit voltage is less than or equal to 0, the charging parameter includes a first charging voltage; if the open circuit voltage is greater than 0, the charging parameter includes a second charging voltage. The first charging voltage is less than the second charging voltage.

[0146] Capacity cutoff met, Q D0 ≤Q C2 ≤Q D1 , and ensure I C2 >0mA, the charging time does not exceed the set upper limit t C .

[0147] Step 4: Late aging.

[0148] OCV Dn >0V, that is, the OCV corresponding to full discharge is greater than 0. The inventors found that the aging degree of the electrochromic device is greater than 30% at this time. Dn or Q Cn With Q D0 The corresponding transmittance is attenuated by more than 30% compared with the initial value, that is, the aging degree is more than 30%. At this time, the bright state transmittance is improved by increasing the charging voltage.

[0149] Capacity cutoff meets Q D0 ≤Q C3 ≤Q D1 , U C3 =U C1 +0.1V. 0.1V is the increase in charging voltage.

[0150] ​In addition, it should be noted that the initial state + early aging stage + late aging stage can be used as an aging cycle. If the electrochromic device still detects aging after calibration in the late aging stage, the previous late aging stage can be used as the initial state of the next aging cycle, and calibration control can continue according to the above Step 2, Step 3 and Step 4.

[0151] Furthermore, the inventors discovered that after prolonged use, electrochromic devices can experience performance degradation due to repeated charge and discharge cycles or exposure to light. This can lead to changes in the transmittance range, for example. If the transmittance changes beyond a preset range, the human eye will detect a noticeable color difference. Different electrochromic devices typically experience varying degrees of aging, and the resulting color differences can significantly impact the user's visual experience.

[0152] The inventors have found in actual research that during the use of the electrochromic device throughout its life cycle, the capacity corresponding to full charge or full discharge of the electrochromic device decays rapidly in the initial stage of use. As the device is used, the electrochromic device decays to a certain value and the decay rate slows down and tends to be gentle. At this time, this value can be considered to be the capacity value of the electrochromic device after aging. The present application charges or discharges the electrochromic device based on the estimated aging capacity value, so that the charging capacity and discharging capacity of the electrochromic device are maintained within the estimated aging capacity value. Since the estimated aging capacity value is associated with the capacity value corresponding to the charging or discharging of the aged electrochromic device sample to reach the first preset condition, it is also associated with the capacity value of the electrochromic device sample after aging. Since each electrochromic device uses the estimated capacity after aging to control color change, on the one hand, each electrochromic device uses the same estimated capacity for charge and discharge during its life cycle, and the device loss is kept consistent as much as possible, making the decay rate of each device similar. That is, the aging degree of each device in the same period is similar, making the transmittance of the device similar when changing color, thereby reducing the color difference between the two devices. On the other hand, each electrochromic device always uses the estimated aging capacity value for charge and discharge, and its final color change endpoint is consistent. Regardless of whether the aging degree of each device is similar, as long as the charging or releasing capacity value is constant, its corresponding transmittance is also consistent.

[0153] In view of the above problems, the embodiments of the present application further improve the above embodiments and provide a method for controlling an electrochromic device.

[0154] 6 , an embodiment of the present application provides a method for controlling an electrochromic device, which may specifically include: Step 601 - Step 602 .

[0155] Step 601: Obtain an estimated aging capacity value of an electrochromic device.

[0156] In the embodiments of the present application, the specific estimated aging capacity value can be based on a theoretical value obtained by conducting electrical experiments on electrochromic device samples. The estimated aging capacity value can be pre-stored in a storage device; it can also be a conclusion obtained by predicting the theoretical value obtained from the electrochromic device sample test.

[0157] Preferably, the estimated aging capacity value of the electrochromic device at the current device temperature is determined. Electrochromic devices have different capacities at different device temperatures. Therefore, obtaining the estimated aging capacity value corresponding to the device's current device temperature can more accurately adjust the device to the same state. Specifically, the current temperature of the electrochromic device is measured as T1 using a temperature sensor, and the processor obtains the estimated aging capacity value corresponding to the current temperature.

[0158] The estimated aging capacity value is associated with the capacity value corresponding to the aged electrochromic device sample after charging or discharging to a first preset condition; that is, the estimated aging capacity value is obtained by estimating the capacity value corresponding to the aged electrochromic device sample after charging or discharging to the first preset condition. "Associated" means that the capacity value corresponding to the aged electrochromic device after charging or discharging to the first preset condition can be directly used as the estimated post-aging capacity value, or the estimated post-aging capacity value can be calculated based on the corresponding capacity value.

[0159] Among them, the first preset condition is based on full charge or full discharge at a preset transmittance. Exemplarily, the first preset condition includes at least one of the following conditions: the transmittance range reaches the preset requirement, the charging or discharging current is less than or equal to the preset value after the preset time, and the charging or discharging time reaches the preset value. The transmittance range reaches the preset requirement, which is based on full charge or full discharge at the preset transmittance. The electrochromic device is divided into multiple gears according to the transmittance. Full charge corresponds to charging from the lowest gear to the highest gear, and full discharge corresponds to discharging from the highest gear to the lowest gear. Alternatively, full charge corresponds to charging from the highest gear to the lowest gear, and full discharge corresponds to discharging from the lowest gear to the highest gear.

[0160] That is, a charge test or discharge test is performed on the aged electrochromic device sample in advance so that the aged electrochromic device sample can meet the preset transmittance, and the test capacity value charged or released by the aged electrochromic device sample when the preset transmittance is met is recorded; in other words, when the aged electrochromic device sample is charged to the test capacity value, the aged electrochromic device sample can reach the above-mentioned preset transmittance. The corresponding estimated aging capacity value can be obtained based on the test capacity value. The above-mentioned preset transmittance requirement can be a transmittance of 5%, 6%, etc., which is not limited in this application.

[0161] In one embodiment, the charging or discharging of the aged electrochromic device sample at the set device temperature can be stopped when the current reaches 40 mA (of course, other cut-off conditions can also be met). At this time, the amount of electricity charged or released corresponds to the test capacity value, and the test capacity is used as the estimated aging capacity value corresponding to the set device temperature. The inventors have found that the same type of electrochromic device, referring to electrochromic devices with the same material and similar area, has the same attenuation law, and after attenuating to a certain value, it decays slowly. At this time, it can be considered that it no longer decays, and the transmittance corresponding to the capacity value after this attenuation can still meet the transmittance of the electrochromic device. Therefore, in this embodiment, the test capacity obtained by testing the sample of the electrochromic device is used as the estimated capacity value to prevent device aging, prevent device overcharging, etc. Preferably, the area of ​​the single electrochromic device sample is the same as the material of the electrochromic device to be controlled, and the area is equal.

[0162] For example, assuming the current temperature of the electrochromic device is 25° C., a test capacity value Q1 corresponding to a full charge or full discharge of the aged electrochromic device sample at 25° C. is obtained. The test capacity value Q1 is then determined as the estimated aging capacity value corresponding to the current device temperature of 25° C.

[0163] Step 602: Charge or discharge the electrochromic device to a second preset condition.

[0164] The second preset condition is the estimated aging capacity value or q times the estimated aging capacity value; q is less than 1.

[0165] For example, in one embodiment, the second preset condition may be that charging or discharging reaches the estimated aging capacity value. Specifically, when the charge or discharge capacity of the electrochromic device reaches the estimated aging capacity value, charging or discharging of the electrochromic device is stopped. This means that the estimated aging capacity is used as the cutoff condition for the electrochromic device, ensuring that each device reaches the same capacity endpoint, thereby maintaining a consistent color across the electrochromic devices.

[0166] For example, in one embodiment, the second preset condition may be that the charge or discharge reaches q times the estimated aging capacity value. Specifically, when the charge or discharge capacity of the electrochromic device reaches q times the estimated aging capacity value, charging or discharging of the electrochromic device is stopped. This means that using q times the estimated aging capacity as the electrochromic device cutoff condition ensures that each device reaches the same capacity endpoint, thereby maintaining a consistent color across the electrochromic devices.

[0167] Specifically, when the charging capacity of the electrochromic device reaches the estimated aging capacity value, the charging of the electrochromic device is stopped, or when the discharging capacity of the electrochromic device reaches the estimated aging capacity value, the discharging of the electrochromic device is stopped.

[0168] In other words, the estimated aging capacity value is used here as the charge cutoff condition and the discharge cutoff condition of the electrochromic device.

[0169] In the prior art, when charging or discharging an electrochromic device, the charging current of the device usually increases first and then decreases until the current approaches 0, at which point the device is considered to be fully charged or discharged. In order to avoid overcharging or over-discharging of the device, the current of the device is usually detected after a preset time, such as 5 seconds. When the device current reaches a preset value, such as 40 mA, charging or discharging is stopped. That is, the device is charged or discharged using current cutoff. However, due to the different internal resistance and aging degrees of such devices, it is impossible to achieve the same transmittance for the device by current cutoff. Therefore, the electrochromic device of this embodiment changes the original charge / discharge cutoff mode during the charging process from current cutoff to capacity cutoff, thereby making the capacity achieved by all devices after being fully charged consistent. Since the relationship between capacity and transmittance corresponds to each other, the capacity cutoff is adopted, and the transmittance is ultimately consistent, thereby controlling the transmittance and reducing the color difference. In addition, in this embodiment, the estimated capacity after aging is used as the medium condition for charging and discharging. The device is always charged to the capacity after aging, so it will not be overcharged or over-discharged, thereby reducing the attenuation rate of the device and extending the service life of the device. Because as the electrochromic device ages, the internal resistance of the electrochromic device increases, and the overall current size will decay. If the current cutoff is still used, it will cause the transmittance to decay. Using capacity cutoff can reduce the transmittance decay rate. Furthermore, the embodiment of the present application uses the estimated aging capacity value for charging and discharging. At the beginning, each electrochromic device will definitely reach the estimated capacity value after aging. Therefore, the phenomenon of inconsistent transmittance due to the inability of some devices to reach it will not occur, further reducing the impact of transmittance on color difference and improving the user experience.

[0170] In summary, the present application charges or discharges the electrochromic device based on the estimated aging capacity value, so that the final charging capacity and discharging capacity value of the electrochromic device are maintained at the estimated aging capacity value. Since each electrochromic device uses the estimated capacity after aging to control the color change, each electrochromic device always uses the estimated aging capacity value to charge and discharge, and its final color change end point is consistent. Regardless of whether the aging degree of each device is close, as long as the capacity value charged or released is certain, the corresponding transmittance is also consistent. Therefore, using the estimated aging capacity value to charge or discharge the electrochromic device can make the electrochromic device reach the required transmittance even if it is aged. Since the transmittance is related to brightness, and brightness is an important factor affecting color difference, therefore, here the electrochromic device is made to reach the required transmittance, thereby eliminating the influence of brightness on color difference. Without changing the color of the device itself, the transmittance is changed to make the electrochromic device meet the color difference requirements during its life cycle, thereby improving the user experience.

[0171] Optionally, obtaining the estimated aging capacity value of the electrochromic device in the above-mentioned step 401 may specifically include: obtaining a test capacity value of the aged electrochromic device sample when charged or discharged to a first preset condition at different device temperatures; determining the estimated aging capacity value corresponding to the different device temperatures of the electrochromic device based on the test capacity value; and determining the estimated aging capacity value of the electrochromic device based on the current device temperature of the electrochromic device.

[0172] That is, first, a charge test or a discharge test is performed on a plurality of aged electrochromic device samples. This process may specifically include:

[0173] Step 1: Perform an aging experiment on multiple electrochromic device samples to obtain aged electrochromic device samples.

[0174] Step 2: Select multiple aged electrochromic device samples for charge or discharge testing. Specifically, charge or discharge the aged electrochromic samples until a first preset condition is reached, and then stop charging or discharging to obtain the corresponding capacity at this time, thereby obtaining the capacity of the electrochromic device after aging.

[0175] In step 1, multiple electrochromic devices are subjected to accelerated environmental aging tests, such as thermal shock, high-temperature storage, low-temperature storage, cycling, and illumination tests. The transmittance range of the electrochromic devices throughout their lifecycle is measured during each test. In this embodiment, the results of the illumination test can be used as the decay range after stabilization, as the illumination test incorporates logic such as simulated sunlight, high-temperature environments, and glass-charged cycling and retention. Electrochromic devices used for testing can be selected from multiple batches to cover the maximum possible process fluctuations, or samples can be specifically produced at the upper and lower limits of process parameters for testing. A specific aging test can involve cycling the devices at full charge and discharge speeds for a certain number of cycles to obtain aged electrochromic device samples. Alternatively, the devices can be cycled at full charge and discharge until the capacity decays gradually, while the transmittance still meets user requirements. Electrochromic device samples can achieve a transmittance of 6% before aging, but when the decay is gradual, the maximum transmittance is only 5%, which still meets user requirements. Alternatively, accelerated aging tests can be performed on the devices according to relevant regulatory requirements.

[0176] The specific aging test model includes at least one of the following:

[0177] 1. Aging test of electrochromic devices in a circulating xenon lamp environment: The electrochromic devices are placed in a xenon lamp box at a specific temperature, simulating sunlight to continuously irradiate the devices with the xenon lamp. The electrochromic devices are also connected to a power source in the xenon lamp box to simulate operations such as switching between and maintaining various gears during actual use.

[0178] 2. Cyclic test of the durability of electrochromic devices: Place the electrochromic devices in a constant temperature and humidity chamber, and cycle the electrochromic devices under different temperature and humidity conditions to simulate the actual working conditions of repeated charging and discharging of the devices at different temperatures.

[0179] 3. Device storage test under extreme conditions: Place the electrochromic device in a hot and cold shock chamber or a temperature chamber and conduct storage tests under different harsh conditions (storage test, that is, keep the electrochromic device in a stable state and place it in a hot and cold shock chamber or a temperature chamber).

[0180] In step 2, the sample with the largest attenuation can be selected from the aged samples for subsequent charging test or discharge test. The ratio of the highest transmittance of the electrochromic device sample before aging to the highest transmittance before aging reflects the attenuation degree of the electrochromic device sample.

[0181] Taking the charging test as an example, a charging test is performed on multiple aged electrochromic device samples that have been screened. Under different device temperatures, when multiple aged electrochromic device samples are charged or discharged to meet the first preset condition, the test capacity value charged or released by the electrochromic device is obtained by integrating the charging or discharging current. Then, the estimated aging capacity value corresponding to the device temperature can be determined by combining multiple test capacity values ​​at the same device temperature, thereby improving the accuracy of determining the estimated aging capacity value. It is worth noting that when multiple aged electrochromic device samples are charged or discharged to meet the first preset condition, their corresponding transmittance can still meet user needs.

[0182] For details, please refer to Figure 7, which shows a graph showing the test results of a charge test on multiple aged electrochromic device samples based on a preset transmittance. The horizontal axis of this graph represents temperature, and the vertical axis represents the test capacity value Q of a full charge test on multiple aged electrochromic device samples based on a preset transmittance. Curve 61 shows the maximum test capacity values ​​of the multiple aged electrochromic device samples at different device temperatures, while curve 62 shows the minimum test capacity values ​​of the multiple aged electrochromic device samples at different device temperatures.

[0183] After determining the estimated aging capacity values ​​corresponding to different device temperatures based on the tested capacity values, a temperature-capacity relationship database is formed and stored in a memory. Thus, the estimated aging capacity value of the electrochromic device can be determined based on the current device temperature of the electrochromic device.

[0184] Accordingly, in one embodiment, the above steps of determining the estimated aging capacity values ​​corresponding to different device temperatures based on the test capacity values ​​may specifically include: obtaining the maximum test capacity value and the minimum test capacity value corresponding to the aged electrochromic device sample under the same device; calculating the average of the maximum test capacity value and the minimum test capacity value corresponding to the aged electrochromic device sample under the same device temperature; wherein the average is the estimated aging capacity value corresponding to the electrochromic device at the device temperature.

[0185] For example, if the device temperature is 25°C, the maximum test capacity of the electrochromic device at 25°C is 5.4 mAh (milliampere-hours), and the minimum test capacity at 25°C is 4.9 mAh, as determined based on the test result relationship diagram. The average of the maximum test capacity of 5.4 mAh and the minimum test capacity of 4.9 mAh is 5.15 mAh. This average value of 5.15 mAh is the estimated aging capacity at 25°C.

[0186] It should be noted that after obtaining the above test result relationship diagram, the estimated aging capacity value corresponding to each device temperature can be calculated based on the test result relationship diagram, and then the estimated aging capacity value corresponding to each device temperature can be stored so that the estimated aging capacity value corresponding to the current device temperature can be directly obtained later. Among them, the temperature range accuracy can be set to any value between 1 and 5°C, which means that an estimated aging capacity value needs to be set for every 1 to 5°C in the operating temperature range. The operating temperature range can be [-20, 90]°C.

[0187] When it is detected that the current device temperature is 25° C., the estimated aging capacity value of 5.15 mAh corresponding to the set device temperature of 25° C. can be directly determined as the estimated aging capacity value corresponding to the current device temperature.

[0188] It is worth noting that in the embodiment of the present application, the storage device stores the maximum capacity value and the minimum capacity value corresponding to this type of electrochromic device at different temperatures.

[0189] Of course, it is also possible to first obtain the current device temperature of the electrochromic device, and then calculate the corresponding estimated aging capacity value in real time from the test capacity value based on the current device temperature of the electrochromic device. This application does not limit this.

[0190] Based on any of the above embodiments, further improvements can be made, and the above steps of determining the estimated aging capacity values ​​corresponding to different device temperatures based on the test capacity values ​​can also specifically include: obtaining multiple test capacity values ​​corresponding to the aged electrochromic device sample at the same device temperature; calculating the average of multiple test capacity values ​​for the same device temperature; wherein the average is the estimated aging capacity value corresponding to the electrochromic device at the device temperature.

[0191] In this application, the storage device stores multiple test capacity values ​​corresponding to this type of electrochromic device at different temperatures. The number of test capacity values ​​can be 3 to any number, which is not limited in this application. For example, if the device temperature is 20°C, multiple test capacity values ​​corresponding to the device temperature can be obtained from the test capacity values ​​of multiple electrochromic devices. For example, three test capacity values ​​corresponding to the device temperature of 20°C are obtained, which are 5.4mAh, 5.15mAh and 4.9mAh respectively. Then, the average of these three test capacity values ​​is calculated, and the average is 5.15mAh. The average value of 5.15mAh is the estimated aging capacity value corresponding to the current device temperature of 20°C.

[0192] In another embodiment, the above-mentioned step 401 of determining the estimated aging capacity value corresponding to the electrochromic device at the current device temperature may also specifically include: obtaining the deviation coefficient of the electrochromic device; obtaining the test capacity value of the electrochromic device sample when charged or discharged to a first preset condition after aging; and determining the estimated aging capacity value of the electrochromic device based on the deviation coefficient of the electrochromic device and the test capacity value.

[0193] It should be noted that, considering that electrochromic devices are affected by errors in process and equipment and will have their own differences, each electrochromic device can be given a unique and estimated aging capacity value for the specific electrochromic device, thereby improving the accuracy of subsequent control and achieving precise control of different electrochromic devices.

[0194] In this embodiment, since each device has a different internal resistance, which is primarily reflected in different initial capacities and corresponding different transmittance ranges, the deviation coefficients for electrochromic devices of the same type are roughly the same. Therefore, the estimated aging capacity value for each electrochromic device can be determined based on the deviation coefficient and initial capacity of each electrochromic device. This method is more consistent with and closely follows the color change patterns of the specific electrochromic device, thereby more accurately controlling the transmittance of each electrochromic device to achieve consistency.

[0195] In some preferred embodiments, the deviation coefficient of the electrochromic device itself can be obtained by the following steps, including: obtaining the initial capacity of the electrochromic device at the current device temperature; determining the deviation coefficient of the electrochromic device based on the maximum capacity value and the minimum capacity value of the electrochromic device sample before aging at the current device temperature, and the initial capacity of the electrochromic device at the current device temperature.

[0196] Specifically, first obtain the initial capacity q of the electrochromic device at the current device temperature, and then obtain the maximum capacity value Q of the electrochromic device sample before aging at the current device temperature. 0max and the minimum capacity Q 0min According to the maximum capacity value Q 0max , minimum capacity value Q 0min And the initial capacity q three parameters to calculate the deviation coefficient K of the electrochromic device. Where K=(qQ 0min ) / (Q 0max -Q 0min ).

[0197] After obtaining the deviation coefficient K of the electrochromic device, the maximum test capacity value Q corresponding to the current device temperature of the aged electrochromic device is calculated. tmax and the minimum test capacity value Q tmin , determine the estimated aging capacity value Q corresponding to the current device temperaturet Among them, Q t =Q tmin +K(Q tmax -Q tmin ).

[0198] For example, the initial capacity q of a certain electrochromic device is 5 mAh at a temperature of 25°C. The upper limit (maximum capacity value Q) of the electrochromic device sample before aging at 25°C is 0max ) is 6mAh, the lower limit (minimum capacity value Q 0min ) is 4 mAh, and the upper limit of the electrochromic device sample after aging (maximum test capacity value Q tmax ) is 5mAh, the lower limit (minimum test capacity value Q tmin ) is 4 mAh, the deviation coefficient is K = 50%; the estimated aging capacity value Q of the electrochromic device corresponding to the current device temperature t It is 4+0.5*(5-4)=4.5mAh.

[0199] Of course, the above-mentioned deviation coefficient can also be a fixed value, such as any value between 0 and 1, such as 0.5, 0.6, 0.8, etc., which is set according to the user's requirements for the electrochromic device. For example, the user requires the maximum transmittance after attenuation to reach 80% of the original maximum transmittance, so the deviation coefficient is 0.8. This application does not limit it.

[0200] Optionally, in one embodiment, the electrochromic device is divided into multiple levels according to transmittance.

[0201] Charging or discharging the electrochromic device to a second preset condition includes: obtaining a dimming instruction, and determining a gear value corresponding to the dimming instruction.

[0202] Accordingly, charging or discharging the electrochromic device to the second preset condition includes: when the gear value corresponds to the highest gear or the lowest gear of the electrochromic device, when the capacity charged or discharged to the electrochromic device reaches the estimated aging capacity value, stopping charging or discharging the electrochromic device; and / or, when the electrochromic device is in an intermediate gear, when the capacity charged or discharged to the electrochromic device reaches q times the estimated aging capacity value, stopping charging or discharging the electrochromic device; wherein q is the proportion of the gear value to the total gear value of the electrochromic device. For example, the electrochromic device is divided into m gears according to the size of the transmittance, n is the gear value corresponding to the dimming command, and q = n / m.

[0203] When the gear value corresponding to the dimming instruction is the lowest gear or the highest gear, the charging capacity of the electrochromic device reaches the estimated aging capacity value, and the charging of the electrochromic device is stopped; or when the discharging capacity of the electrochromic device reaches the estimated aging capacity value, the discharging of the electrochromic device is stopped.

[0204] That is, under the extreme gear, the estimated aging capacity value is used as the cutoff condition for charging, and the estimated aging capacity value is used as the cutoff adjustment for discharging, so as to avoid overcharging and over-discharging of the device and affecting the service life of the device.

[0205] When the gear value corresponding to the dimming instruction is the middle gear, q times the estimated aging capacity value is used as the cutoff condition for charging, and q times the estimated aging capacity value is used as the cutoff adjustment for discharging.

[0206] For example, the gears can be divided into 5 gears in total, and the electrochromic device includes gears 0, 1, 2, 3 and 4. From gear 0 to gear 4, it means full charge; from gear 4 to gear 0, it means full discharge. The capacity of full charge and full discharge is the same, that is, the estimated aging capacity value Q here. When in gear 2, the capacity of the electrochromic device reaches When , the charging of the electrochromic device is stopped.

[0207] It should be noted that the information interaction, execution process, etc. between the above-mentioned devices / units are based on the same concept as the method embodiment of this application. Their specific functions and technical effects can be found in the method embodiment section and will not be repeated here.

[0208] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0209] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in the above-mentioned various method embodiments can be implemented.

[0210] An embodiment of the present application provides a computer program product. When the computer program product is run on a mobile terminal, the mobile terminal can implement the steps in the above-mentioned various method embodiments when executing the computer program product.

[0211] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the process in the above-mentioned embodiment method by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, it can implement the steps of each of the above-mentioned method embodiments. The computer program includes computer program code, which can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium can at least include: any entity or device that can carry the computer program code to the camera / electronic device, recording medium, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disk. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electric carrier signals and telecommunication signals.

[0212] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0213] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0214] In the embodiments provided in this application, it should be understood that the disclosed devices / network equipment and methods can be implemented in other ways. For example, the device / network equipment embodiments described above are merely illustrative. For example, the division of the modules or units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0215] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0216] 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A method for controlling an electrochromic device, characterized in that: include: Obtaining the aging degree of the electrochromic device; Determining charging parameters corresponding to the electrochromic device according to the aging degree; The electrochromic device is charged according to the charging parameter control.

2. The electrochromic device control method according to claim 1, characterized in that: Determining the charging parameters corresponding to the electrochromic device according to the aging degree includes: When the aging degree is less than or equal to a first preset value, the charging parameter includes a first charging voltage; And / or, when the aging degree is greater than the first preset value, the charging parameter includes a second charging voltage, wherein the first charging voltage is less than the second charging voltage.

3. The electrochromic device control method according to claim 2, characterized in that: A difference between the second charging voltage and the first charging voltage is less than or equal to a difference between a maximum safe charging voltage and an initial charging voltage of the electrochromic device.

4. The electrochromic device control method according to claim 2, characterized in that: When the aging degree is less than or equal to the first preset value, the controlling the charging of the electrochromic glass according to the charging parameter includes: charging the electrochromic device with the first charging voltage, and stopping the charging of the electrochromic device when the capacity of the electrochromic device reaches the initial capacity of the electrochromic device; And / or, when the aging degree is greater than the first preset value, the charging of the electrochromic glass controlled according to the charging parameters includes: charging the electrochromic device with the second charging voltage, and stopping charging the electrochromic device when the charging current of the electrochromic device reaches the cut-off current.

5. The electrochromic device control method according to claim 4, characterized in that: Before the capacity of the electrochromic device reaches the initial capacity, the method further comprises: If the charging current is less than the first preset current, or the charging time is longer than the first preset time, the charging of the electrochromic device is stopped, and new charging parameters corresponding to the electrochromic device are determined.

6. The electrochromic device control method according to claim 2, characterized in that: When the aging degree is greater than the first preset value, the method further includes: Obtaining a second aging degree based on a state corresponding to the aging degree of the electrochromic device; A new charging parameter corresponding to the electrochromic device is determined according to the second aging degree.

7. The electrochromic device control method according to claim 6, characterized in that: Determining a new charging parameter corresponding to the electrochromic device according to the second aging degree includes: When the second aging degree is less than or equal to a second preset value, the charging parameter includes the second charging voltage; And / or, when the second aging degree is greater than a second preset value, the charging parameter includes a third charging voltage, wherein the second preset value is equal to or unequal to the first preset value, and the second charging voltage is less than the third charging voltage.

8. The electrochromic device control method according to claim 7, characterized in that: When the aging degree is greater than the second preset value, the method further includes: charging the electrochromic device with the third charging voltage, and stopping charging the electrochromic device when the capacity of the electrochromic device reaches the initial capacity of the electrochromic device.

9. The electrochromic device control method according to claim 1, characterized in that: Before obtaining the aging degree of the electrochromic device, the method further includes: When the charging current of the electrochromic device after charging or discharging for a preset time is less than a preset value, stopping charging or discharging the electrochromic device; The method of obtaining the degree of aging of the electrochromic device includes: obtaining a characterization parameter of the electrochromic device when the current is less than or equal to the preset value after the electrochromic device is charged or discharged to the preset time, and calculating the degree of aging of the electrochromic device according to the characterization parameter and the preset characterization parameter; and / or, obtaining a first transmittance corresponding to the electrochromic device when the charging current is less than or equal to the preset value after the electrochromic device is charged to the preset time, calculating the ratio of the first transmittance to the preset transmittance, and calculating the degree of aging of the electrochromic device according to the ratio.

10. The electrochromic device control method according to claim 1, characterized in that: The obtaining of the aging degree of the electrochromic device comprises: obtaining a first open circuit voltage of the electrochromic device when the discharge current is less than or equal to the preset value after the electrochromic device is discharged for the preset time, and calculating the aging degree of the electrochromic device according to the first open circuit voltage and the preset open circuit voltage; And / or, obtaining a first capacity value of the electrochromic device when the discharge current is less than or equal to the preset value after the electrochromic device is discharged to the preset time, and calculating the aging degree of the electrochromic device according to the first capacity value and the preset capacity value.

11. The electrochromic device control method according to any one of claims 1 to 10, characterized in that: The method further comprises: Obtaining discharge parameters of the electrochromic device; The electrochromic device is discharged according to the discharge parameter control, wherein when the electrochromic device is at different aging degrees, the corresponding discharge parameters are the same.

12. An electrochromic device control device, characterized in that: include: A processor, configured to obtain an aging degree of the electrochromic device; and determine a charging parameter corresponding to the electrochromic device according to the aging degree; A controller is used to control the charging of the electrochromic device according to the charging parameters.

13. The electrochromic device control device according to claim 12, characterized in that: The processor is also used to, when the aging degree is less than or equal to a first preset value, the charging parameter includes a first charging voltage; and / or, when the aging degree is greater than the first preset value, the charging parameter includes a second charging voltage, wherein the first charging voltage is less than the second charging voltage.

14. The electrochromic device control device according to claim 13, characterized in that: A difference between the second charging voltage and the first charging voltage is less than or equal to a difference between a maximum safe charging voltage and an initial charging voltage of the electrochromic device.

15. The electrochromic device control device according to claim 13, characterized in that: The controller is also used to charge the electrochromic device with the first charging voltage when the degree of aging is less than or equal to the first preset value, and stop charging the electrochromic device when the capacity of the electrochromic device reaches the initial capacity; and / or, when the degree of aging is greater than the first preset value, charge the electrochromic device with the second charging voltage, and stop charging the electrochromic device when the charging current of the electrochromic device reaches the cut-off current.

16. The electrochromic device control device according to claim 15, characterized in that: Before the capacity of the electrochromic device reaches the initial capacity, if the charging current is less than a first preset current, or the charging time is greater than a first preset time, the processor is further used to update new charging parameters of the electrochromic device; and use the new charging parameters as the charging parameters for the next time the controller charges the electrochromic device.

17. The electrochromic device control device according to claim 13, characterized in that: The processor is also used to obtain a second aging degree based on a state corresponding to the aging degree of the electrochromic device when the aging degree is greater than the first preset value; and determine a new charging parameter corresponding to the electrochromic device according to the second aging degree.

18. The electrochromic device control device according to claim 17, characterized in that: The processor is also used for, when the second aging degree is less than or equal to a second preset value, the charging parameter includes the second charging voltage; and / or, the processor is also used for, when the second aging degree is greater than a second preset value, the charging parameter includes a third charging voltage, wherein the second preset value is equal to or unequal to the first preset value, and the second charging voltage is less than the third charging voltage.

19. The electrochromic device control device according to claim 18, characterized in that: The controller is also used to charge the electrochromic device with the third charging voltage when the aging degree is greater than the second preset value, and stop charging the electrochromic device when the capacity of the electrochromic device reaches the initial capacity.

20. The electrochromic device control device according to claim 12, characterized in that: The controller is also used for, before obtaining the aging degree of the electrochromic device, stopping charging or discharging the electrochromic device when the charging current of the electrochromic device after charging or discharging for a preset time is less than or equal to a preset value; and, The processor is also used to obtain a characterization parameter of the electrochromic device when the current is less than the preset value after the electrochromic device is charged or discharged to the preset time, and calculate the degree of aging of the electrochromic device based on the characterization parameter and the preset characterization parameter; and / or, the processor is also used to obtain a first transmittance corresponding to the electrochromic device when the charging current is less than or equal to the preset value after the electrochromic device is charged to the preset time, calculate the ratio of the first transmittance to the preset transmittance, and calculate the degree of aging of the electrochromic device based on the ratio.

21. The electrochromic device control device according to claim 12, characterized in that: The processor is further used to obtain a first open circuit voltage of the electrochromic device when the charging current is less than or equal to the preset value after the electrochromic device is discharged to the preset time, and calculate the aging degree of the electrochromic device according to the first open circuit voltage and the preset open circuit voltage; And / or, obtaining a first capacity value of the electrochromic device when the charging current is less than or equal to the preset value after the electrochromic device is discharged to the preset time, and calculating the aging degree of the electrochromic device according to the first capacity value and the preset capacity value.

22. The electrochromic device control device according to claims 12 to 21, characterized in that: The processor is further used to obtain discharge parameters of the electrochromic device; the controller is further used to control the discharge of the electrochromic device according to the discharge parameters, wherein when the electrochromic device is at different aging degrees, the corresponding discharge parameters are the same.

23. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 11 is implemented.

24. A control system for an electrochromic device, characterized in that: It comprises a terminal platform and a control device for an electrochromic device as claimed in any one of claims 12 to 22, and information exchange is performed between the terminal platform and the control device for the electrochromic device.

Images