Calibration method, apparatus, control method for electrochromic device, electrochromic device, and readable storage medium

Abstract

A calibration method, apparatus and electrochromic device for an electrochromic device, the calibration method includes: determining a current total capacity of the electrochromic device after entering a self-calibration mode; and when the difference between the previously determined total capacity of the electrochromic device and the current total capacity exceeds a preset error range, the current total capacity is taken as the latest total capacity, and the relationship between each current gear of the electrochromic device and the corresponding capacity is re-determined at a predetermined capacity distribution rate according to the current total capacity. The calibration method can realize accurate adjustment to the electrochromic device in different state environments, improve the user's experience, and at the same time, can avoid the occurrence of overcharging and over-discharging phenomena in the device that affect the device performance.

Description

[Technical Field]

[0001] [CROSS-REFERENCE TO RELATED APPLICATIONS] This application claims priority to a Chinese patent application bearing application number 202111260799.4 and entitled "Method and apparatus for calibrating electrochromic devices, and electrochromic devices," filed with the China Patent Office on October 28, 2021, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of electrochromics, and in particular to a calibration method and apparatus for an electrochromic device, and an electrochromic device. [Background technology]

[0003] In the prior art, electrochromic devices are typically divided into different gears according to transmittance, and then the open circuit voltage (OCV) corresponding to each gear is experimentally obtained through testing, and the gear switching of the device is controlled according to the OCV. During actual use, it has been found that when the device is used before or in a suitable environment, the light transmittance can be accurately determined. However, as the electrochromic device continues to age or after the environmental temperature changes significantly, the relationship between the OCV and transmittance of the electrochromic device changes, resulting in the device being unable to accurately adjust the transmittance according to the pre-stored OCV relationship, which affects user experience. Summary of the Invention [Problem to be solved by the invention]

[0004] The embodiments of the present application provide a calibration method, apparatus, and electrochromic device for an electrochromic device, which can achieve accurate adjustment of the electrochromic device under different conditions through self-calibration control, and can also prevent overcharge and over-discharge phenomena from occurring in the device, which can affect device performance, etc. [Means for solving the problem]

[0005] In a first aspect, embodiments of the present application provide a method for calibrating an electrochromic device, the method comprising: After entering the self-calibration mode, the current total capacitance of the electrochromic device can be determined; When a difference between a previously determined total capacity of the electrochromic device and the current total capacity exceeds a preset error range, the current total capacity is set as the latest total capacity, and a correspondence relationship between the current gears and capacities of the electrochromic device can be re-determined at a predetermined capacity distribution rate according to the current total capacity; Charging the electrochromic device with a charge capacity of a preset distribution ratio for each preset charge number, waiting a preset time after each charge, measuring and recording the current open circuit voltage of the electrochromic device after each charge, thereby obtaining multiple groups of measurement data of the current capacity and corresponding open circuit voltage of the electrochromic device; A functional relationship between capacitance and open circuit voltage can be obtained by fitting the measurement data of the plurality of groups; According to the current total capacity and the functional relationship, the relationship between each current gear, capacity, and open circuit voltage of the electrochromic device can be re-determined at the predetermined capacity distribution rate; The self-calibration mode may further include performing a calibration once every time the number of times the operation of redetermining the correspondence between the current gears and capacities of the electrochromic device at the predetermined capacity distribution rate according to the current total capacity is equal to or exceeds the preset calibration switching number, after entering the self-calibration mode next time, performing a calibration once in accordance with the method of redetermining the relationship between the current gears, capacities, and open circuit voltage of the electrochromic device at the predetermined capacity distribution rate according to the current total capacity and the functional relationship.

[0006] When any one or more combinations of the following trigger conditions are met, the electrochromic device is triggered to enter the self-calibration mode: the total number of gear shifts reaches a preset number threshold; the time interval since the previous calibration reaches a preset time threshold; the usage cycle of the electrochromic device reaches a preset usage time threshold; the gear shift is not yet completed even though the current gear shift operation exceeds the maximum gear shift time length; and the difference value between the open circuit voltage after the current gear shift is completed and the open circuit voltage corresponding to the target gear is not within a preset voltage difference value range.

[0007] Preferably, determining the total current capacity of the electrochromic device as described above comprises: discharging the current electrochromic device until it reaches a fully discharged state, then charging the electrochromic device until it reaches a fully charged state, and recording the full charge capacity required to bring the electrochromic device from the fully discharged state to the fully charged state, which is the current total capacity of the electrochromic device; Alternatively, the method may include charging the current electrochromic device until it reaches the fully charged state, then discharging the electrochromic device until it reaches the fully discharged state, and recording the full discharge capacity required to get the electrochromic device from the fully charged state to the fully discharged state, which is the current total capacity of the electrochromic device.

[0008] Preferably, prior to determining the current total capacity of the electrochromic device, the calibration method further comprises: The method may further include determining a minimum value of the full charge capacity and the full discharge capacity obtained in the initial test of the electrochromic device, and using the full charge or full discharge test process corresponding to the minimum value as a test process for subsequently determining a current total capacity of the electrochromic device.

[0009] Preferably, the predetermined volume distribution ratio and the initial correspondence between each gear and volume of the electrochromic device are: Charging and discharging the electrochromic device, and measuring the corresponding open circuit voltage and capacity at different transmittances corresponding to different gears of the electrochromic device to obtain an initial correspondence relationship between each gear of the electrochromic device and the open circuit voltage and capacity; The capacity distribution ratio corresponding to each gear of the electrochromic device can be obtained in advance according to the ratio between the capacity corresponding to each gear and the total capacity of the electrochromic device in the corresponding measurement stage.

[0010] Preferably, the predetermined volume distribution ratio and the initial correspondence between each gear and volume of the electrochromic device further include: According to the number of gears of the electrochromic device, a capacity is distributed to each gear at a set capacity distribution ratio to obtain a capacity corresponding to each gear; The electrochromic device is charged and discharged, and the current capacity of the electrochromic device is monitored. When the monitored current capacity is equal to the respective distributed capacity, the corresponding open circuit voltage is recorded, and an initial correspondence relationship between each gear of the electrochromic device and the open circuit voltage and capacity can be obtained in advance.

[0011] Preferably, the predetermined volume distribution ratio and the initial correspondence between each gear and volume of the electrochromic device further include: According to the number of gears of the electrochromic device, a capacity is distributed to each gear at a set capacity distribution ratio to obtain a capacity corresponding to each gear; The capacitances corresponding to some gears are selected and tested, and then function fitting is performed according to the test results to obtain an initial correspondence relationship between each gear of the electrochromic device and the open circuit voltage and capacitance.

[0012] Preferably, the calibration method may further include updating the correspondence between each gear and capacitance of the electrochromic device after the latest total capacitance is determined, and using the correspondence between each gear and capacitance of the electrochromic device for subsequent gear shifting operations.

[0013] Preferably, the electrochromic device may store several temperature ranges that divide temperature values, and may include an extreme temperature range, a normal temperature range, and an intermediate temperature range other than the normal temperature range and the extreme temperature range. After entering the self-calibration mode, determining a temperature range in which a current ambient temperature of the electrochromic device exists; If the temperature is within the extreme temperature range, the current self-calibration operation is stopped. When the temperature is within the normal temperature range, performing the step of determining the current total capacity of the electrochromic device; If the temperature is in the intermediate temperature range, the method may further include, after determining the current total capacity of the electrochromic device, adjusting the determined total capacity according to a preset temperature coefficient.

[0014] In a second aspect, embodiments of the present application provide a method of controlling an electrochromic device, the method comprising: After performing self-calibration using the calibration method described above, detecting whether a gear shift signal exists; When a gear shift signal is received, identifying a current gear and obtaining a target gear from the gear shift signal; Calculating a capacitance difference value between the target gear and the current gear according to the latest determined correspondence between each gear and capacitance of the electrochromic device; Charging or discharging the electrochromic device in response to the capacitance difference value so as to shift the electrochromic device into the target gear.

[0015] In a third aspect, embodiments of the present application provide an apparatus for calibrating an electrochromic device, the apparatus comprising: a determination module configurable to determine a current total capacitance of the electrochromic device after entering the self-calibration mode; and an adjustment module configured to, when a difference between a previously determined total capacity of the electrochromic device and the current total capacity exceeds a preset error range, set the current total capacity as the latest total capacity, and re-determine the correspondence between each gear and capacity of the electrochromic device at a predetermined capacity distribution ratio according to the current total capacity.

[0016] an acquisition module configured to charge the electrochromic device with a charge capacity of a preset distribution rate for a preset number of times, wait a preset time after each charge, measure and record a current open circuit voltage of the electrochromic device after each charge, and acquire multiple groups of measurement data of the current capacity and corresponding open circuit voltage of the electrochromic device; a fitting module configurable to fit and obtain a functional relationship between capacitance and open-circuit voltage according to the plurality of groups of measurement data, wherein the adjustment module is further configured to re-determine the relationship between each current gear of the electrochromic device, capacitance, and open-circuit voltage at a predetermined capacitance distribution rate according to the current total capacitance and the functional relationship; When the number of times that the adjustment module performs the operation of redetermining the correspondence relationship between each current gear and capacity of the electrochromic device at a predetermined capacity distribution rate according to the current total capacity is equal to or exceeds a preset calibration switching number, the switching module is configured to perform one calibration by switching to a method of redetermining the relationship between each current gear and capacity of the electrochromic device at a predetermined capacity distribution rate according to the current total capacity and the functional relationship after entering a self-calibration mode next time, A measurement module that can be configured to charge and discharge the electrochromic device, measure the corresponding open circuit voltage and capacity at different transmittances of the electrochromic device, obtain an initial correspondence between each gear of the electrochromic device and the open circuit voltage and capacity, and obtain a capacity distribution ratio corresponding to each gear of the electrochromic device according to a ratio value between the capacity corresponding to each gear and the total capacity of the electrochromic device at the corresponding measurement stage. do. In one embodiment, the measurement module comprises:According to the number of gears of the electrochromic device, capacity is distributed to each gear at a set capacity distribution rate to obtain a capacity corresponding to each gear, and the electrochromic device is charged / discharged; the current capacity of the electrochromic device is monitored; and when the monitored current capacity is equal to the distributed capacity, the corresponding open circuit voltage is recorded to obtain an initial correspondence relationship between each gear of the electrochromic device and the open circuit voltage and capacity. In Noh be.

[0017] The decision module: a charge / discharge control sub-module that is configurable, when determining the current total capacity of the electrochromic device, to discharge the electrochromic device until it reaches a fully discharged state and then charge the electrochromic device until it reaches a fully charged state, or, when determining the current total capacity of the electrochromic device, to charge the electrochromic device until it reaches a fully charged state and then discharge the electrochromic device until it reaches a fully discharged state; and a recording sub-module configured to record a full charge capacity required from the fully discharged state to the fully charged state of the electrochromic device, which may be taken as the current total capacity of the electrochromic device, or to record a full discharge capacity required from the fully charged state to the fully discharged state of the electrochromic device, which may be taken as the current total capacity of the electrochromic device.

[0018] In a fourth aspect, embodiments of the present application provide an electrochromic device, the electrochromic device may comprise a processor and a memory, the memory may have a computer program stored therein, and the processor may be configured to execute the computer program to implement the calibration or control method described above.

[0019] In a fifth aspect, an embodiment of the present application provides a readable storage medium, which may store a computer program, and which, when executed by a processor, is capable of implementing the calibration method or the control method described above. [Effects of the Invention]

[0020] The embodiments of the present application may have the following beneficial effects: The electrochromic device calibration method of the present embodiment enters a self-calibration mode when a trigger condition is met, determines the current total capacity of the electrochromic device, and updates the current total capacity if there is a large deviation between the current total capacity and the total capacity stored in the most recent memory. At the same time, the correspondence between each gear and the capacity is re-determined in conjunction with a predetermined capacity distribution ratio for use in the next gear shift. This method allows the electrochromic device to be accurately adjusted under different conditions, improving the user experience and preventing overcharging and over-discharging, which may affect device performance.

[0021] In order to more clearly explain the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings that may be used in the embodiments. It should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope. Those skilled in the art can further obtain other related drawings from these drawings without any creative work. [Brief explanation of the drawings]

[0022] [Figure 1] 1 shows a first flow diagram of a method for calibrating an electrochromic device according to some embodiments of the present application. [Figure 2] FIG. 1 shows a first flow diagram of a method for calibrating an electrochromic device according to some other embodiments of the present application. [Figure 3]FIG. 10 shows a second flow diagram of a method for calibrating an electrochromic device according to some other embodiments of the present application. [Figure 4] FIG. 10 shows a first flow diagram of a calibration method for an electrochromic device according to still other embodiments of the present application. [Figure 5] FIG. 10 shows a second flow diagram of a calibration method for an electrochromic device according to still other embodiments of the present application. [Figure 6] 10 shows a flow diagram of a method for controlling an electrochromic device according to still other embodiments of the present application. [Figure 7] 10 shows a structural schematic diagram of a calibration device for an electrochromic device in still other embodiments of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0023] Hereinafter, the technical aspects of the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. It is clear that the described embodiments are only some of the embodiments of the present application, and do not include all of the embodiments.

[0024] Generally, the components of the embodiments of the present application described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the detailed description of the embodiments of the present application in the drawings below is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the present application. Based on the embodiments of the present application, any other embodiments that can be obtained by a person skilled in the art without any creative effort are also within the scope of protection of the present application.

[0025] Hereinafter, the terms "comprises," "having," and their cognates as used in various embodiments of the present application are intended to merely represent certain features, numbers, steps, operations, elements, components, or combinations of the foregoing, and should not be understood as excluding the presence of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing, or the increment of one or more features, numbers, steps, operations, elements, components, or combinations of the foregoing.

[0026] Additionally, the terms "first," "second," "third," etc. are for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0027] Unless otherwise specified, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art to which the various embodiments of the present application belong. The terms (e.g., terms defined in commonly used dictionaries) are interpreted as having the same meaning as in the context of the relevant technical field, and are not interpreted as having an idealized or overly formal meaning, unless expressly limited in the various embodiments of the present application.

[0028] In the prior art, it is common to control the gear switching according to the corresponding OCV value of each gear of an electrochromic device. However, as the device ages, the relationship between the OCV of the device and the transmittance or gear changes. For example, Table 1 below shows the relationship between the transmittance, OCV, and gear of an electrochromic device tested before and after aging.

[0029] [Table 1]

[0030] As can be seen from Table 1, before device aging, if a user wanted to shift to second gear, they would simply control the OCV to reach -0.5V. However, after device aging, if they controlled the OCV to reach -0.5V, the device would not be able to shift to second gear and would need to shift to -0.7V. If the relationship between the device's OCV and transmittance changes, the above-mentioned fixed gear-OCV relationship alone cannot accurately adjust the gear shift of the device. In fact, this gear shifting method may accelerate device expiration and shorten the device's service life. For example, if a user wanted to shift to first gear, they would need to control the OCV to reach -0.7V. At this time, the power source would continue to charge and discharge the device until the gear was reached. However, due to aging, the device would not be able to reach -0.7V, and the device would continue to be charged and discharged. Such prolonged overcharging and overdischarging could cause irreversible damage to the device.

[0031] To solve the above problems, the present invention provides a calibration method for an electrochromic device. By periodically or periodically self-calibrating the device, the relationship between the capacity and the OCV for each gear of the electrochromic device can be continuously updated to obtain the latest status of the electrochromic device during actual use. The updated relationship can be used to control gear shifting, allowing for accurate color adjustment even in different device states, and achieving maximum service life while satisfying user needs. This method will be described below in conjunction with specific embodiments.

[0032] Next, several embodiments of the present application will be described in detail with reference to the drawings. Fig. 1 shows a first flow chart of a calibration method for an electrochromic device according to the present embodiment. Illustratively, the calibration method for an electrochromic device includes steps S110 to S130.

[0033] In step S110, after entering the self-calibration mode, the current total capacitance of the electrochromic device is determined.

[0034] The self-calibration mode is a state mode in which the electrochromic device performs self-calibration, in which the electrochromic device stops gearshifting to perform calibration-related operations and does not allow gearshifting until the calibration operation is completed. For example, when it detects that a trigger condition is met, it initiates the self-calibration process, and at this time it is considered to have entered the self-calibration mode.

[0035] In one embodiment, the electrochromic device can be triggered to enter a self-calibration mode when any one of the following trigger conditions is met: For example, the trigger conditions for entering the self-calibration mode may include, but are not limited to, one or more combinations of: the cumulative total number of gear shifts of the device reaching a preset number threshold; the time interval since the last calibration reaching a preset time threshold; the period of use of the device reaching a preset time threshold; etc.

[0036] Many of the trigger conditions listed above may be classified as fixed trigger conditions. The trigger may also include a variable trigger condition, such as an abnormality occurring during a gear shift operation, which can similarly trigger entering the self-calibration mode. For example, the variable trigger condition may further include, but is not limited to, one or a combination of the following: the gear shift is not yet completed even after the current gear shift operation exceeds the maximum gear shift time length, i.e., the gear shift timeout occurs; and the difference between the open circuit voltage after the current gear shift is completed and the open circuit voltage corresponding to the target gear is not within a preset voltage difference value range.

[0037] Due to the characteristics of the electrochromic material, the total capacitance of the electrochromic device will change with the state of the material as the device continues to be used. In this embodiment, the gear shifting operation is completed mainly based on capacitance, and the OCV corresponding to each gear is further used to verify the accuracy of the gear shift after switching. When self-calibration is required, the current total capacitance of the electrochromic device is re-determined, and the correspondence between each gear and the capacitance of the electrochromic device is updated using this total capacitance.

[0038] Typically, an electrochromic device has two states: a fully charged state when fully charged, and a fully discharged state when fully discharged. Here, the charge capacity required to go from the fully discharged state to the fully charged state is defined as Q1, and the charge capacity required to go from the fully discharged state to the fully charged state is defined as Q2. When the device is about to reach the fully charged or fully discharged state, the charge or discharge current gradually approaches zero, and it takes a long time for the current to reach zero. In order to reduce the user's waiting time, this embodiment sets a cutoff current close to zero, and when it is detected that the charge or discharge current is equal to or less than this cutoff current, it can be determined that the device has already reached the fully charged or fully discharged state.

[0039] Regarding step S110, in one embodiment, when determining the current total capacity of the electrochromic device, the current device is discharged, the discharge current is detected in real time, and when the discharge current becomes equal to or less than a preset cutoff current, i.e., the fully discharged state is reached, the device is charged, and when the charge current becomes equal to or less than the cutoff current, i.e., the fully charged state is reached, the full charge capacity Q1 of the device required from being fully discharged to being fully charged is recorded, and the full charge capacity is then taken as the current total capacity of the device.

[0040] Similarly, in another embodiment, the full discharge capacity Q2 required from the fully charged state to the fully discharged state may be used as the current total capacity of the electrochromic device. For example, the current device is first charged, and the charging current is detected in real time. When the charging current becomes equal to or less than the cutoff current, i.e., the fully charged state is reached, the charging is stopped and the device is discharged. When the discharging current becomes equal to or less than the cutoff current, i.e., the fully discharged state is reached, the full discharge capacity Q2 of the device when fully charged and fully discharged is recorded, and this full discharge capacity is used as the current total capacity of the device.

[0041] Preferably, for example, when measuring the initial total capacity of a device before shipping, the full charge capacity Q1 and full discharge capacity Q2 of the device are first measured, and the minimum of the two is defined as the initial total capacity of the device. At the same time, the full charge or full discharge test process corresponding to the minimum value is then used as the test process for subsequently determining the current total capacity of the electrochromic device. For example, if the full charge capacity is used as the total capacity, then during subsequent self-calibration, the current full charge capacity is determined by first fully discharging the device and then fully charging it.

[0042] During the charge / discharge process of an electrochromic material, the reversibility of the electrochromic material affects the relationship between the full charge capacity Q1 and the full discharge capacity Q2. Therefore, it can be understood that the full charge capacity Q1 and the full discharge capacity Q2 are not necessarily the same. The better the reversibility, the closer Q1 and Q2 will be, and the worse the reversibility, the greater the difference between Q1 and Q2. If the larger of the two values ​​is defined as the total capacity of the device, it may cause overcharging and overdischarging of the device, affecting device performance. Therefore, the smaller of the two values ​​is defined here as the total capacity.

[0043] In step S120, it is determined whether the difference between the previously determined total capacitance of the electrochromic device and the current total capacitance exceeds a preset error range.

[0044] For example, after obtaining the current total capacity using step S110, it can be determined whether the absolute value of the difference between the previously determined total capacity and the current total capacity is equal to or greater than a preset percentage of the previously determined total capacity, such as 0.3% to 0.6%, which can be adaptively adjusted according to specific actual needs. If the absolute value is equal to or greater than the preset percentage, it indicates that a certain change may have occurred in the current state of the device compared to before. Therefore, step S130 can be performed to ensure the accuracy of subsequent gear shift adjustments.

[0045] Preferably, if the error is within the preset error range, the previously determined total capacity is maintained, i.e., the total capacity does not need to be updated, and at this time, the self-calibration mode can be exited to wait for a gear shift signal. It can be understood that the previously determined total capacity may be the original total capacity obtained by testing the device before shipping, or the most recent total capacity re-determined after the corresponding self-calibration of the device is performed.

[0046] In step S130, if the preset error range is exceeded, the current total capacity is taken as the latest total capacity, and the correspondence between the current gears and capacities of the electrochromic device is re-determined according to a predetermined capacity distribution ratio according to the current total capacity.

[0047] The predetermined capacity distribution ratio is the ratio of the capacity corresponding to each gear to the total capacity, which can be obtained by a trial run before shipment, and in subsequent operations, this distribution ratio is used as is, and the total capacity is simply updated when performing self-calibration, thereby achieving the purpose of updating the correspondence between each gear and the capacity.It can be understood that the device in this embodiment stores the above-mentioned capacity distribution ratio information and the initial correspondence between each gear of the device and the open circuit voltage and capacity before shipment, and these are used in subsequent gear shift control operations.

[0048] In one embodiment, the predetermined capacity distribution ratio and the initial correspondence relationship between each gear and capacity of the electrochromic device can be obtained by first determining the capacity and OCV corresponding to each gear, and then determining the capacity distribution ratio, as follows:

[0049] (1) Charge and discharge the electrochromic device, and measure the corresponding open circuit voltage and capacity at different transmittances corresponding to different gears of the device to obtain an initial correspondence between each gear of the device and the open circuit voltage and capacity.

[0050] (2) The capacity distribution ratio for each gear of the device can be obtained by the ratio between the measured capacity of each gear and the total capacity of the device at the corresponding measurement stage, usually the ratio to the original total capacity at the time of shipment. For example, the initial correspondence between the six gears, OCV, and capacity of an electrochromic device is as shown in Table 2 below.

[0051] [Table 2]

[0052] Regarding the above-mentioned predetermined capacity distribution ratio and the initial correspondence relationship between each gear and capacity of the electrochromic device, in another embodiment, the capacity distribution ratio may be determined first, and then the capacity and OCV corresponding to each gear may be determined, as follows:

[0053] (1) Depending on the number of gears of the electrochromic device, capacity is distributed to each gear at a set capacity distribution ratio to obtain a capacity corresponding to each gear.

[0054] (2) Charge and discharge the device, monitor the current capacity of the device, and when the monitored current capacity is equal to the allocated capacity, record the corresponding OCV to obtain an initial correspondence between each gear of the device and the OCV and capacity.

[0055] Of course, in the above embodiment, function fitting may be used to determine the initial correspondence between each gear and the open circuit voltage and capacitance. For example, capacitances corresponding to some gears, for example, at least four gears, may be selected for testing. In this way, it is not necessary to test all gears. For example, when there are a large number of gears, this can significantly reduce the amount of work required for detection and errors in gear measurement.

[0056] Above step S1 3 For example, after determining the new total capacitance, the correspondence between each gear and capacitance of the current electrochromic device is updated. For example, taking the correspondence stored in Table 2 above as an example, the total capacitance Q in Table 2 can be updated to Q', at which point the capacitance corresponding to each gear changes, thereby obtaining a new correspondence between the gear and capacitance.

[0057] When a gear shift signal is received, the updated correspondence can be used to perform subsequent gear shift operations, for example, by first identifying the gear the device is currently in according to the current OCV, and then controlling charging or discharging according to the capacity difference between the current gear and the target gear to achieve adjustment to the target gear.

[0058] In this embodiment, only the capacity is updated. The gear identification process can be completed by combining the previously stored correspondence between each gear and the OCV. It can be understood that when the device is in the early or mid-stage of use, the OCV corresponding to each gear usually does not change significantly. Testing has shown that the OCV generally changes within the allowable deviation range for each gear, so there is no need to update the OCV during this period.

[0059] The calibration method for the electrochromic device in this embodiment enters a self-calibration mode when a trigger condition is met, determines the current total capacity of the electrochromic device, and if there is a large deviation between the current total capacity and the total capacity stored in the most recent memory, updates the total capacity and, at the same time, re-determines the correspondence between each gear and capacity in conjunction with a predetermined capacity distribution ratio for use in the next gear shift. This method allows the electrochromic device to be accurately adjusted in different conditions, improving the user experience and preventing overcharging and over-discharging, which may affect device performance.

[0060] Next, some other embodiments of the present application will be described in detail with reference to the drawings. Referring to Fig. 2, this embodiment presents a calibration method for an electrochromic device, which differs from the method of the embodiment described above in that this embodiment re-determines the correspondence between each gear of the current electrochromic device and the capacity and OCV, that is, simultaneously updates the capacity and OCV corresponding to each gear.

[0061] Illustratively, the method for calibrating the electrochromic device includes:

[0062] In step S210, after entering the self-calibration mode, the current total capacitance of the electrochromic device is determined.

[0063] In step S220, if the difference between the previously determined total capacity of the electrochromic device and the current total capacity exceeds the preset error range, the current total capacity is taken as the latest total capacity.

[0064] Steps S210 to S220 can refer to the above steps S110 to S120, and will not be described again here.

[0065] In step S230, the electrochromic device is charged with a charge capacity of a preset distribution rate for a preset number of times, and after each charging, a preset time is waited. The current open circuit voltage of the electrochromic device after each charging is measured and recorded to obtain multiple groups of measurement data of the capacity and corresponding open circuit voltage of the electrochromic device.

[0066] Since the function between the device capacity and OCV is mainly a cubic function, in this embodiment, the number of preset charges mentioned above should be three or more, and adding one measurement before capacity charging, this ensures that at least four groups of measurement data can be obtained, which can meet the data needs for function fitting.

[0067] The preset distribution ratio can be set according to the number of charging times, etc. For example, if the number of charging times is set to three, a capacity of Q / 3 can be charged each time. It can also be set according to the capacity distribution ratio corresponding to each gear. For example, if there are five gears and the capacity ratio of each gear is an even distribution, charging can be performed four times, with the capacity charged each time being Q / 4. In this way, measurement data including the capacity of five groups of different gears and the corresponding open circuit voltage can be obtained.

[0068] For example, as shown in FIG. 3, after the latest total capacity is determined, wait a preset time, measure the current open circuit voltage once, mark it as OCV(0), and then add 1 to i. Then, charge the device once with the corresponding distribution ratio, wait a preset time again, read the open circuit voltage after this charge, mark it as OCV(1), and repeat this process until i is equal to the preset number of charges. By recording the open circuit voltage after charging a corresponding capacity each time, multiple groups of measurement data can be obtained.

[0069] In step S240, a functional relationship between the current device capacitance and open circuit voltage is obtained by fitting according to the plurality of groups of measurement data.

[0070] In step S250, according to the current total capacity and the functional relationship, the relationship between each current gear, capacity, and open circuit voltage of the electrochromic device is re-determined at a predetermined capacity distribution rate.

[0071] For example, these multiple groups of measurement data can be fitted using a function fitting method to obtain a cubic function expression between the capacity and the corresponding open circuit voltage for each new gear. Then, the capacity corresponding to each gear can be calculated according to the updated total capacity and the known capacity distribution ratio, and the OCV corresponding to each capacity can be calculated based on the function expression. Furthermore, the relationship between the current gear, capacity, and open circuit voltage of the electrochromic device can be re-determined and used for subsequent gear shifting operations.

[0072] Of course, in one preferred embodiment, to obtain the relationship between the capacity and the corresponding open circuit voltage at each gear of the current electrochromic device, the device may be adjusted step by step to reach a number of preset gears, and when the corresponding OCV of the corresponding gear is reached, the corresponding capacity may be monitored, thereby directly obtaining the corresponding relationship between the capacity and OCV of each new gear.

[0073] In the case of an embodiment in which a device is adjusted and controlled one by one to reach multiple gears to obtain a new correspondence, if there are an excessive number of gears, the amount of detection work is large and measurement errors are likely to occur. On the other hand, by adopting the function fitting embodiment described above, it is only necessary to measure values ​​at four or more points arbitrarily, which can greatly reduce the amount of detection work and errors during gear measurement, thereby improving the accuracy of adjustment and control of the device.

[0074] In one preferred embodiment, in step S210, the electrochromic device of this embodiment may pre-store several temperature ranges that define temperature boundaries, including an extreme temperature range, a normal temperature range, and an intermediate temperature range other than the normal temperature range and the extreme temperature range. For example, the normal temperature range may be set to 0°C to 40°C, the extreme temperature range may be set to -10°C or below and 80°C or above, and the intermediate temperature range may be set to -10°C to 0°C and 40°C to 80°C, etc., and these may be adjusted according to actual needs; this is merely an example.

[0075] It will be appreciated that the options in the embodiment described above apply to this embodiment as well, and therefore will not be repeated here.

[0076] Next, several other embodiments of the present application will be described in detail. Referring to Figure 4, this embodiment presents a method for calibrating an electrochromic device. The difference from the method of the embodiment described above is that this embodiment performs self-calibration by alternately using the two calibration methods described above. Specifically, the first calibration method, which updates only the capacitance, is adopted and executed for a certain period of time or a certain number of times, and then the second calibration method, which updates the capacitance and OCV simultaneously, is executed once, and then the method is switched back to the first calibration method, thereby achieving the alternating use of the two calibration methods.

[0077] This is because the OCV corresponding to each gear does not change significantly within a certain period of time after one calibration, but if the capacity and OCV are updated at the same time, the waiting time will be long each time. Therefore, this embodiment proposes to execute the second calibration method once every time the first calibration method is executed for a certain period of time, thereby achieving a balance between calibration accuracy and calibration efficiency.

[0078] Illustratively, the method for calibrating the electrochromic device includes:

[0079] In step S310, after entering the self-calibration mode, the current total capacitance of the electrochromic device is determined.

[0080] In step S320, if the difference between the previously determined total capacity of the electrochromic device and the current total capacity exceeds the preset error range, the current total capacity is taken as the latest total capacity.

[0081] In step S330, the correspondence between the current gears and capacities of the electrochromic device is re-determined with a predetermined capacity distribution ratio according to the current total capacity.

[0082] In step S340, it is detected whether the number of operations of re-determining the correspondence between each current gear and capacity of the electrochromic device at a predetermined capacity distribution ratio according to the current total capacity is equal to or greater than the preset calibration switching number.

[0083] In step S350, if the preset calibration switching count is reached, the next time the self-calibration mode is entered, a calibration will be performed in accordance with the above-mentioned method of re-determining the relationship between each current gear of the device and its capacity and open circuit voltage at a predetermined capacity distribution rate according to the current total capacity and the functional relationship.

[0084] For example, it is determined whether the number of times step S330 is executed exceeds a preset number of calibration switching times, and if so, the next self-calibration is performed by switching to the second calibration method, and then the next self-calibration is performed by switching back to the first calibration method again to perform multiple calibrations, and so on, continuously performing the self-calibration operation.

[0085] Among them, the process of performing one self-calibration in accordance with the above-mentioned method of re-determining the relationship between the current gear, capacity, and open circuit voltage of the electrochromic device at a predetermined capacity distribution rate according to the current total capacity and the functional relationship is the same as the above-mentioned steps S230 to S250, and will not be described again here.

[0086] Regarding the calibration method described in any of the above examples, in one preferred aspect, in one embodiment, after entering the self-calibration mode, as shown in FIG. 5, the method further includes:

[0087] In step S410, the temperature interval in which the current ambient temperature of the electrochromic device is located is determined.

[0088] In step S420, if the temperature is in the extreme temperature range, the current self-calibration operation is stopped.

[0089] In step S430, if the temperature is within the normal temperature range, the above-mentioned step of determining the current total capacitance of the electrochromic device is carried out, that is, the subsequent self-calibration operation is carried out normally.

[0090] In step S440, if in the intermediate temperature zone, after determining the current total capacity of the electrochromic device, adjust the determined total capacity according to the preset temperature coefficient.

[0091] For example, in the intermediate temperature range, the calibration is acceptable, but the determined total capacity needs to be adjusted by a certain percentage to ensure the accuracy of the final calibration result. Usually, there is a linear relationship between the total capacity and the temperature coefficient. Specifically, the total capacity may be based on a standard capacity measured at room temperature and stored in the device. When the temperature of the external environment is high or low, the determined total capacity Q is converted according to the linear relationship to obtain the total capacity Q at room temperature.N and the total capacity Q N can be used in subsequent calculation analysis as the adjusted total capacity determined this time.

[0092] Considering that a poor external environment can have a significant impact on device performance, it can be understood that performing self-calibration at this time may affect the accuracy of the calibration results. Therefore, this embodiment determines whether to continue calibration and whether the obtained results need to be adjusted in consideration of the current external environmental conditions of the device, thereby achieving more accurate calibration of the device in different conditions, thereby improving the user's usage experience and also improving the service life of the device.

[0093] It will be appreciated that the options in those embodiments described above apply to this embodiment as well, and therefore will not be repeated here.

[0094] Next, some other embodiments of the present application will be described in detail. Referring to Fig. 6, based on the method of the embodiment described above, this embodiment presents a control method for an electrochromic device, for example, the control method for an electrochromic device includes:

[0095] In step S510, after performing self-calibration using the above calibration method, it is detected whether there is a gear shift signal.

[0096] In step S520, when a gearshift signal is received, the current gear is identified and the target gear is obtained from the gearshift signal.

[0097] For example, when a gear shift signal is received, the OCV is read and compared with the OCV in the corresponding relationship between the capacity and OCV of each gear of the device obtained after self-calibration, thereby identifying the current gear information. It can be understood that, since the charge in a device that is not in a charging or discharging state tends to be uniformly distributed, a more accurate OCV value can be measured and obtained. Regarding the target gear, the gear shift signal usually carries information about the target gear, so the gear shift signal can be directly analyzed to obtain the target gear.

[0098] In step S530, a capacitance difference value between the target gear and the current gear is calculated according to the latest determined correspondence between each gear and capacitance of the electrochromic device.

[0099] In step S540, the electrochromic device is charged or discharged according to the capacitance difference value so as to shift the electrochromic device to the target gear.

[0100] For example, the difference in charge capacity between the target gear and the current gear can be calculated to obtain a capacity difference value, where a positive capacity difference indicates the need for charging, and a negative capacity difference indicates the need for discharging. Therefore, the gear change adjustment is performed according to the corresponding charging or discharging operation, for example, the adjustment can be performed in a constant voltage or constant current manner, etc., but is not limited thereto.

[0101] Next, some other embodiments of the present application will be described in detail. Referring to Fig. 7, this embodiment provides an electrochromic device calibration apparatus 100, which illustratively includes: a determination module 110 configured to determine a current total capacitance of the electrochromic device after entering the self-calibration mode; and an adjustment module 120 configured to, when a difference value between a previously determined total capacity of the electrochromic device and the current total capacity exceeds a preset error range, set the current total capacity as the latest total capacity, and re-determine the correspondence relationship between each current gear and capacity of the electrochromic device at a predetermined capacity distribution rate according to the current total capacity.

[0102] Preferably, the electrochromic device calibration apparatus 100 comprises: an acquisition module configured to charge the electrochromic device with a charge capacity of a preset distribution rate for a preset number of times, wait a preset time after charging, measure and record the current open circuit voltage of the electrochromic device after each charging, and acquire multiple groups of measurement data of the current capacity and corresponding open circuit voltage of the electrochromic device; The electrochromic device further includes a fitting module configured to fit a functional relationship between the capacitance and the open-circuit voltage according to the plurality of groups of measurement data, and the adjustment module 120 is configured to re-determine the relationship between the current gear, capacitance, and open-circuit voltage of the electrochromic device at a predetermined capacitance distribution rate according to the current total capacitance and the functional relationship.

[0103] Preferably, the electrochromic device calibration apparatus 100 comprises: The device further includes a switching module configured to switch to a method of re-determining the relationship between the current gears of the electrochromic device, the capacity, and the open circuit voltage at a predetermined capacity distribution rate according to the current total capacity and perform one calibration after entering the self-calibration mode next time, whenever the number of times the adjustment module 120 performs the operation of re-determining the relationship between the current gears of the electrochromic device and the capacity at a predetermined capacity distribution rate according to the current total capacity and the functional relationship, is equal to or exceeds the preset calibration switching number.

[0104] The predetermined volume distribution ratio and the initial correspondence between each gear and volume of the electrochromic device can be determined in advance. In one embodiment, the calibration device 100 for the electrochromic device includes: The electrochromic device further includes a measurement module configured to charge and discharge the electrochromic device, measure the corresponding open circuit voltages and capacities at different transmittances corresponding to different gears of the electrochromic device, obtain an initial correspondence between each gear of the electrochromic device and the open circuit voltage and capacity, and obtain a capacity distribution ratio corresponding to each gear of the electrochromic device according to the ratio between the capacity corresponding to each gear and the total capacity of the electrochromic device at the corresponding measurement stage.

[0105] Preferably, in another embodiment, the measurement module may be configured to distribute capacity to each gear at a set capacity distribution rate according to the number of gears of the electrochromic device, obtain a capacity corresponding to each gear, and then charge and discharge the electrochromic device, monitor the current capacity of the electrochromic device, and when the monitored current capacity is equal to the distributed capacity, record the corresponding open-circuit voltage, thereby obtaining an initial correspondence relationship between each gear of the electrochromic device and the open-circuit voltage and capacity.

[0106] Wherein, the above-mentioned determination module 110 comprises a charge / discharge control sub-module and a recording sub-module. When determining the current total capacity of the electrochromic device, in one embodiment, the charge / discharge control sub-module is configured to discharge the current electrochromic device until it reaches a fully discharged state, and then charge the electrochromic device until it reaches a fully charged state. The recording sub-module is configured to record the full charge capacity required to move the electrochromic device from the fully discharged state to the fully charged state, which is the current total capacity of the electrochromic device.

[0107] In another embodiment, the charge / discharge control sub-module is configured to charge the current electrochromic device until it reaches a fully charged state, and then discharge the electrochromic device until it reaches a fully discharged state, and the recording sub-module is configured to record the full discharge capacity required from the fully charged state of the electrochromic device to the fully discharged state, which is the current total capacity of the electrochromic device.

[0108] In one preferred embodiment, after entering the self-calibration mode, the determination module 110 is further configured to, according to the minimum value among the full charge charge capacity and the full discharge charge capacity obtained in the initial test of the electrochromic device before determining the current total capacity of the electrochromic device, set the full charge or full discharge test process corresponding to the minimum value as the test process for subsequently determining the current total capacity of the electrochromic device.

[0109] Preferably, the electrochromic device stores several temperature ranges that divide temperature values, including an extreme temperature range, a normal temperature range, and an intermediate temperature range other than the normal temperature range and the extreme temperature range. Illustratively, the electrochromic device calibration device 100 further includes a detection module, a stop module, and an adjustment module. The detection module is configured to determine the temperature range in which the current ambient temperature of the electrochromic device is located after entering the self-calibration mode; the abort module is configured to stop the current self-calibration operation when it is located in an extreme temperature range; the determination module 110 is further configured to perform a step of determining the current total capacity of the electrochromic device when it is located in a normal temperature range; and the adjustment module is configured to adjust the determined total capacity according to a preset temperature coefficient after the determination module 110 determines the current total capacity of the electrochromic device when it is located in an intermediate temperature range.

[0110] The apparatus of this embodiment corresponds to the embodiment of the method for calibrating an electrochromic device described above, and it can be understood that the options in the above embodiment also apply to this embodiment, and therefore will not be repeated here.

[0111] The present application further provides an electrochromic device, which may be an integrated device equipped with an electrochromic material, such as a dimming window, an automobile windshield, etc. Illustratively, the electrochromic device includes a processor and a memory, in which a computer program is stored, and the processor runs the computer program to cause the terminal device to perform the functions of each module in the above-described method or apparatus.

[0112] The present application further provides a readable storage medium configured to store the computer program for use in the electrochromic device.

[0113] It should be understood that in some embodiments of the present application, the disclosed apparatus and method may be implemented in other ways. The apparatus embodiments described above are merely schematic, and for example, the flow charts and structural diagrams in the drawings illustrate possible system architectures, functions, and operations of apparatuses, methods, and computer program products according to various embodiments of the present application. In this regard, each block in the flow charts or block diagrams may represent a module, program segment, or portion of code, which includes one or more executable instructions for implementing a given logical function. In some alternative implementations, the functions depicted in the blocks may occur in a different order than depicted in the drawings. For example, it should be noted that two consecutive blocks may actually be executed essentially in parallel, and may even be executed in the reverse order, depending on the functionality involved. It should also be noted that each block in the structural diagrams or flow diagrams, and combinations of blocks in the structural diagrams or flow diagrams, may be implemented in a dedicated hardware-based system that performs a given function or operation, or in a combination of dedicated hardware and computer instructions.

[0114] Furthermore, each functional module or unit in each embodiment of the present application may be integrated together to form a single independent part, each module may exist independently, or two or more modules may be integrated to form a single independent part.

[0115] The functions may be stored in a single computer-readable storage medium if they are realized in the form of software functional modules and sold or used as an independent product. Based on this understanding, an essential part of the technical aspects of the present application, a part that contributes to the prior art, or a part of the technical aspects may be embodied in the form of a software product, and the computer software product is stored in a storage medium and includes several instructions that cause a computer device (which may be a smartphone, personal computer, server, network device, etc.) to execute all or some of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes various media capable of storing program code, such as a USB memory, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0116] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application.

Claims

1. determining a current total capacitance of the electrochromic device after entering the self-calibration mode; If a difference between the previously determined total capacity of the electrochromic device and the current total capacity exceeds a preset error range, the current total capacity is set as the latest total capacity, and a correspondence relationship between each gear and the capacity of the electrochromic device is re-determined at a predetermined capacity distribution rate according to the current total capacity; Including, Each current gear of the electrochromic device is classified according to the transmittance of the electrochromic device; A method for calibrating electrochromic devices.

2. After the current total capacity is set as the latest total capacity, Charging the electrochromic device with a charge capacity of a preset distribution rate for a preset number of times, waiting a preset time after each charge, measuring and recording the current open circuit voltage of the electrochromic device after each charge, and obtaining multiple groups of measurement data of the current capacity and corresponding open circuit voltage of the electrochromic device; fitting a functional relationship between capacitance and open circuit voltage according to the plurality of groups of measurement data; and re-determining a relationship between each current gear, capacity, and open circuit voltage of the electrochromic device at the predetermined capacity distribution rate according to the current total capacity and the functional relationship. The method for calibrating an electrochromic device according to claim 1 .

3. Further, when the number of times of executing the operation of redetermining the correspondence relationship between each current gear and capacity of the electrochromic device at the predetermined capacity distribution rate according to the current total capacity is equal to or exceeds the preset calibration switching number, next time after entering the self-calibration mode, perform one calibration according to the method of redetermining the relationship between each current gear and capacity of the electrochromic device and open circuit voltage at the predetermined capacity distribution rate according to the current total capacity and the functional relationship. The method for calibrating an electrochromic device according to claim 2 .

4. The predetermined volume distribution ratio and the initial correspondence between each gear and volume of the electrochromic device are as follows: Charging and discharging the electrochromic device, and measuring the corresponding open circuit voltage and capacity at different transmittances corresponding to different gears of the electrochromic device to obtain an initial correspondence relationship between each gear of the electrochromic device and the open circuit voltage and capacity; According to the ratio between the capacity of each gear and the total capacity of the electrochromic device in the corresponding measurement stage, the capacity distribution ratio corresponding to each gear of the electrochromic device is obtained in advance; The method for calibrating an electrochromic device according to any one of claims 1 to 3.

5. The predetermined volume distribution ratio and the initial correspondence between each gear and volume of the electrochromic device are as follows: According to the number of gears of the electrochromic device, a capacity is distributed to each gear at a set capacity distribution ratio to obtain a capacity corresponding to each gear; The electrochromic device is charged and discharged, and the current capacity of the electrochromic device is monitored. When the monitored current capacity is equal to the respective distributed capacity, the corresponding open circuit voltage is recorded, so as to obtain an initial correspondence relationship between each gear of the electrochromic device and the open circuit voltage and capacity; The method for calibrating an electrochromic device according to any one of claims 1 to 3.

6. The predetermined volume distribution ratio and the initial correspondence between each gear and volume of the electrochromic device are as follows: According to the number of gears of the electrochromic device, a capacity is distributed to each gear at a set capacity distribution ratio to obtain a capacity corresponding to each gear; The capacitance corresponding to some gears is selected and tested, and then function fitting is performed according to the test results to obtain an initial correspondence relationship between each gear of the electrochromic device and the open circuit voltage and capacitance, which is obtained in advance; The method for calibrating an electrochromic device according to any one of claims 1 to 3.

7. As previously mentioned, determining the total current capacity of the electrochromic device can be accomplished by: Discharging the current electrochromic device until it reaches a fully discharged state, then charging the electrochromic device until it reaches a fully charged state, and recording the full charge capacity required to get the electrochromic device from the fully discharged state to the fully charged state, which is the current total capacity of the electrochromic device; or charging the current electrochromic device until it reaches the fully charged state, then discharging the electrochromic device until it reaches the fully discharged state, and recording a full discharge capacity, which is the current total capacity of the electrochromic device required to get the electrochromic device from the fully charged state to the fully discharged state; The method for calibrating an electrochromic device according to claim 1 , comprising:

8. Before determining the current total capacity of the electrochromic device, the calibration method further includes determining the minimum value of the full charge capacity and the full discharge capacity obtained in an initial test of the electrochromic device; The step of determining the current total capacity of the electrochromic device includes determining the current total capacity of the electrochromic device using a test process of full charge or full discharge corresponding to the minimum value. The method for calibrating an electrochromic device according to claim 7.

9. the total number of gear shifts reaches a preset number threshold, the time interval from the previous calibration reaches a preset time threshold, the use cycle of the electrochromic device reaches a preset use time threshold, the current gear shift operation exceeds the maximum gear shift time length but the gear shift is not yet completed, and the difference value between the open circuit voltage after the current gear shift is completed and the open circuit voltage corresponding to the target gear is not within a preset voltage difference value range; triggering the electrochromic device to enter the self-calibration mode when any one or more combinations of the trigger conditions are satisfied; The method for calibrating an electrochromic device according to any one of claims 1 to 3, 7 and 8.

10. The electrochromic device stores several temperature ranges, including an extreme temperature range, a normal temperature range, and an intermediate temperature range other than the normal temperature range and the extreme temperature range, by dividing the temperature range into temperature ranges. After entering the self-calibration mode, determining a temperature range in which a current ambient temperature of the electrochromic device exists; If the temperature is within the extreme temperature range, the current self-calibration operation is stopped. When the temperature is within the normal temperature range, performing the step of determining the current total capacity of the electrochromic device; If the temperature is in the intermediate temperature range, after determining a current total capacity of the electrochromic device, adjusting the determined total capacity according to a preset temperature coefficient; The method for calibrating an electrochromic device according to any one of claims 1 to 3, 7 and 8, further comprising:

11. 1. A method for controlling an electrochromic device, comprising: After performing self-calibration using the calibration method according to any one of claims 1 to 3, 7 and 8, detecting whether a gear shift signal is present; When a gear shift signal is received, identifying a current gear and obtaining a target gear from the gear shift signal; Calculating a capacitance difference value between the target gear and the current gear according to the latest determined correspondence between each gear and capacitance of the electrochromic device; charging or discharging the electrochromic device in response to the capacitance difference value so as to shift the electrochromic device into the target gear; A method for controlling an electrochromic device, comprising:

12. a determination module configured to determine a current total capacitance of the electrochromic device after entering the self-calibration mode; an adjustment module configured to, when a difference between a previously determined total capacity of the electrochromic device and the current total capacity exceeds a preset error range, set the current total capacity as the latest total capacity, and re-determine the correspondence between each gear and capacity of the electrochromic device at a predetermined capacity distribution rate according to the current total capacity; Equipped with Each current gear of the electrochromic device is classified according to the transmittance of the electrochromic device; Calibration equipment for electrochromic devices.

13. The decision module: a charge / discharge control sub-module configured, upon determining the current total capacity of the electrochromic device, to discharge the electrochromic device until it reaches a fully discharged state and then charge the electrochromic device until it reaches a fully charged state; a recording sub-module configured to record a full charge capacity required to transfer the electrochromic device from the fully discharged state to the fully charged state, the full charge capacity being the current total capacity of the electrochromic device; The electrochromic device calibration apparatus of claim 12, comprising:

14. The decision module: a charge / discharge control sub-module configured, upon determining the current total capacity of the electrochromic device, to charge the electrochromic device until it reaches a fully charged state and then discharge the electrochromic device until it reaches a fully discharged state; a recording sub-module configured to record a full discharge capacity required from the fully charged state to the fully discharged state of the electrochromic device, the full discharge capacity being the current total capacity of the electrochromic device; The electrochromic device calibration apparatus of claim 12, comprising:

15. an acquisition module configured to charge the electrochromic device with a charge capacity of a preset distribution rate for a preset number of times, wait a preset time after each charge, measure and record the current open circuit voltage of the electrochromic device after each charge, and acquire multiple groups of measurement data of the current capacity and corresponding open circuit voltage of the electrochromic device; a fitting module configured to fit a functional relationship between capacitance and open circuit voltage according to the plurality of groups of measurement data; Furthermore, The adjustment module is further configured to re-determine a relationship between each current gear, capacity, and open circuit voltage of the electrochromic device at a predetermined capacity distribution rate according to the current total capacity and the functional relationship. The calibration device for an electrochromic device according to any one of claims 12 to 14.

16. a switching module configured to, when the number of times that the adjustment module performs the operation of redetermining the correspondence relationship between each current gear and capacity of the electrochromic device at a predetermined capacity distribution rate according to the current total capacity, equal to or exceeds a preset calibration switching number, perform one calibration by switching to a mode of redetermining the relationship between each current gear and capacity of the electrochromic device and an open circuit voltage at a predetermined capacity distribution rate according to the current total capacity and the functional relationship after entering a self-calibration mode next time; The electrochromic device calibration apparatus of claim 15 further comprising:

17. a measurement module configured to charge and discharge the electrochromic device, measure the corresponding open circuit voltage and capacity at different transmittances of the electrochromic device, obtain an initial correspondence between each gear of the electrochromic device and the open circuit voltage and capacity, and obtain a capacity distribution ratio corresponding to each gear of the electrochromic device according to the ratio between the capacity corresponding to each gear and the total capacity of the electrochromic device at the corresponding measurement stage; The electrochromic device calibration apparatus according to any one of claims 12 to 14, further comprising:

18. a measurement module configured to distribute capacity to each gear at a set capacity distribution rate according to the number of gears of the electrochromic device to obtain a capacity corresponding to each gear, charge and discharge the electrochromic device, monitor a current capacity of the electrochromic device, and when the monitored current capacity is equal to each distributed capacity, record a corresponding open circuit voltage, thereby obtaining an initial correspondence relationship between each gear of the electrochromic device and the open circuit voltage and capacity; The electrochromic device calibration apparatus according to any one of claims 12 to 14, further comprising:

19. a processor and a memory in which a computer program is stored; The processor is configured to execute the computer program to perform the method according to any one of claims 1 to 3, 7 and 8. Electrochromic device.

20. A readable storage medium storing a computer program that, when executed by a processor, performs the method according to any one of claims 1 to 3, 7 and 8.

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