Level changing control method and apparatus for electrochromic device, and medium and system

Abstract

The present application is applicable to the field of electrochromic technology. Provided are a level changing control method and apparatus for an electrochromic device, and a medium and a system. The level changing control method comprises: acquiring a target level and a current level; determining whether the target level is the lowest level or the highest level; if not, on the basis of the target level and the current level, determining a charging / discharging direction, and on the basis of the charging / discharging direction, the target level and the current level, determining a first charging and discharging adjustment parameter required for level changing; and / or if so, acquiring a current level characterization parameter corresponding to the current level, and acquiring a fixed level characterization parameter corresponding to the target level; on the basis of the fixed level characterization parameter and the current level characterization parameter, determining a second charging and discharging adjustment parameter required for level changing; and on the basis of the first charging and discharging adjustment parameter or the second charging and discharging adjustment parameter, switching an electrochromic device to the target level. The level changing control method provided in the embodiments of the present application takes a charging / discharging direction into consideration, so that the transmittance corresponding to a level is more accurate.

Description

Shift control method, device, medium and system for electrochromic device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application number 202311624677.8 filed with the Patent Office of China on November 28, 2023, entitled “Shifting control method, device, medium and system for 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 a shift control method for an electrochromic device. Background Art

[0004] Electrochromic devices are usually divided into different gears according to transmittance, and then a series of open circuit voltages (OCVs) corresponding to each gear are obtained through test experiments, and the gear switching of the electrochromic device is then controlled according to the OCVs.

[0005] Currently, the charging and discharging of electrochromic devices is based on the functional relationship between the open circuit voltage and the gear position of the electrochromic device. When the electrochromic device is charged and discharged to the same gear position, the transmittance of the electrochromic device is inconsistent.

[0006] Summary of the Invention

[0007] The embodiments of the present application provide a shift control method for an electrochromic device, which can solve the problem of inaccurate transmittance adjustment of the electrochromic device in the prior art.

[0008] In a first aspect, an embodiment of the present application provides a shift control method for an electrochromic device, comprising:

[0009] Get the target gear and current gear;

[0010] determining whether the target gear is the lowest gear or the highest gear; if not, determining a charge-discharge direction according to the target gear and the current gear, and determining a first charge-discharge adjustment parameter required for shifting according to the charge-discharge direction, the target gear, and the current gear; and / or, if yes, obtaining a current gear characterizing parameter corresponding to the current gear, obtaining a fixed gear characterizing parameter corresponding to the target gear; and determining a second charge-discharge adjustment parameter required for shifting according to the fixed gear characterizing parameter and the current gear characterizing parameter;

[0011] The electrochromic device is switched to the target gear position according to the first charge and discharge adjustment parameter or the second charge and discharge adjustment parameter.

[0012] In the first aspect of the present application, when performing a gear shift operation on the electrochromic device, it is first determined whether the target gear is the lowest gear or the highest gear, and then different gear shift control logics are given according to the judgment result, so that the transmittance adjustment of the electrochromic device is more accurate.

[0013] When the target gear is not the lowest gear or the highest gear, the charge and discharge direction is first determined based on the target gear and the current gear. Then, the first charge and discharge adjustment parameter required for the gear shift is determined based on the charge and discharge direction, the target gear, and the current gear. This application determines the charge and discharge direction of the electrochromic device and provides the charge adjustment parameter corresponding to the charge direction or the discharge adjustment parameter corresponding to the discharge direction, thereby making the transmittance corresponding to charging or discharging to the same gear closer.

[0014] When the target gear is the lowest gear or the highest gear, the electrochromic device only has a charging direction or a discharging direction. The second charge and discharge adjustment parameters required for shifting are determined based on the fixed characterization parameters corresponding to the target gear and the current gear characterization parameters corresponding to the current gear, so that the transmittance corresponding to charging or discharging to the same gear is closer.

[0015] The key point of this application is that when the target gear is not the lowest gear or the highest gear, the charging adjustment parameters required for shifting are determined according to the charging direction, and the discharge adjustment parameters required for shifting are determined according to the discharging direction. This avoids the problem in the prior art that the same adjustment parameters are used for shifting regardless of charging or discharging, resulting in a large difference in transmittance corresponding to switching to the same gear, affecting the experience.

[0016] When the target gear is the lowest gear or the highest gear, there is only the discharge direction or the charge direction in the control logic. In this case, the charge and discharge adjustment parameters can be determined directly based on the fixed values ​​of the target gear and the current gear, such as the fixed OCV or the fixed capacity Q, making the entire control logic simpler and more accurate.

[0017] In a possible implementation of the first aspect, the first charge-discharge adjustment parameter includes at least one of an open-circuit voltage and a charge;

[0018] The current gear characterization parameter includes at least one of open circuit voltage and power;

[0019] The fixed gear characterization parameter includes at least one of open circuit voltage and power;

[0020] The second charge and discharge adjustment parameter includes at least one of open circuit voltage and power.

[0021] When performing a gear shift operation on an electrochromic device, when the target gear is not the lowest gear or the highest gear, the first open-circuit voltage difference required for the gear shift can be determined based on the charge and discharge direction, the target gear and the current gear; the first charge difference required for the gear shift can also be determined based on the charge and discharge direction, the target gear and the current gear; the first open-circuit voltage difference required for the gear shift can also be determined based on the charge and discharge direction, the target gear and the current gear, and then the first charge difference required for the gear shift can be determined based on the functional relationship between the open-circuit voltage difference and the charge-open-circuit voltage. When the target gear is the lowest gear or the highest gear, the second open-circuit voltage difference required for shifting can be determined based on the current gear open-circuit voltage corresponding to the current gear and the fixed gear open-circuit voltage corresponding to the target gear; the second electric quantity difference required for shifting can also be determined based on the current gear electric quantity corresponding to the current gear and the fixed gear electric quantity corresponding to the target gear; the second open-circuit voltage difference required for shifting can also be determined based on the current gear open-circuit voltage corresponding to the current gear and the fixed gear open-circuit voltage corresponding to the target gear, and then the second electric quantity difference required for shifting can be determined based on the functional relationship between the open-circuit voltage difference and the electric quantity-open-circuit voltage.

[0022] In a possible implementation of the first aspect, if not, determining the charge and discharge direction according to the target gear position and the current gear position includes:

[0023] comparing the gear value of the current gear and the gear value of the target gear,

[0024] If the gear value of the target gear is greater than the gear value of the current gear, the charging and discharging direction is determined to be a charging direction.

[0025] If the gear value of the target gear is smaller than the gear value of the current gear, the charge-discharge direction is determined to be a discharge direction.

[0026] In a possible implementation of the first aspect, determining a first charge-discharge adjustment parameter required for shifting according to the charge-discharge direction, the target gear position, and the current gear position includes:

[0027] Obtain the current open circuit voltage corresponding to the current gear position,

[0028] Obtaining a target open-circuit voltage corresponding to the target gear position according to the charge and discharge direction;

[0029] A first open circuit voltage difference required for shifting is determined according to the current open circuit voltage and the target open circuit voltage.

[0030] The current open circuit voltage obtained is the current measured open circuit voltage. When the current measured open circuit voltage meets the preset conditions, the current measured open circuit voltage is directly used for subsequent calculations. When the current measured open circuit voltage does not meet the preset conditions, the current measured open circuit voltage needs to be corrected. Since the charge and discharge parameters are determined in combination with the charge and discharge direction in this application, the measured open circuit voltage may have an error compared to the previous target open circuit voltage due to device instability and power failure. If the measured OCV is directly used to determine the charge and discharge parameters, there will be errors. Therefore, it is necessary to correct the measured open circuit voltage so that the entire electrochromic device reaches a more accurate transmittance range.

[0031] When obtaining the target open-circuit voltage, the charge and discharge direction must be determined. When the charge and discharge direction is the charging direction, the target open-circuit voltage corresponding to the target gear is determined by using the functional relationship between the open-circuit voltage and the gear of the electrochromic device in the charging direction; when the charge and discharge direction is the discharging direction, the open-circuit voltage corresponding to the target gear is determined by using the functional relationship between the open-circuit voltage and the gear of the electrochromic device in the discharging direction.

[0032] A difference operation is performed on the current open circuit voltage and the target open circuit voltage, and an absolute value operation is taken to obtain a first open circuit voltage difference.

[0033] In a possible implementation of the first aspect, determining a first charge-discharge adjustment parameter required for shifting according to the charge-discharge direction, the target gear position, and the current gear position includes:

[0034] Get the current power corresponding to the current gear,

[0035] Obtaining a target power corresponding to the target gear position according to the charge and discharge direction;

[0036] A first power difference required for shifting is determined according to the current power and the target power.

[0037] In a possible implementation of the first aspect, obtaining the current power corresponding to the current gear position includes:

[0038] Obtain the current open circuit voltage corresponding to the current gear position,

[0039] Acquiring a preset relationship according to the charge and discharge direction, wherein the preset relationship includes a functional relationship of charge capacity-open circuit voltage and a functional relationship of discharge capacity-open circuit voltage;

[0040] The current power is determined according to the current open circuit voltage and the preset relationship.

[0041] The current open circuit voltage obtained is the current measured open circuit voltage. When the current measured open circuit voltage meets the preset conditions, the current measured open circuit voltage is directly used for subsequent calculations. When the current measured open circuit voltage does not meet the preset conditions, the current measured open circuit voltage needs to be corrected.

[0042] For the charging and discharging of the electrochromic device, two functional relationships need to be set, namely the functional relationship of charging capacity-open circuit voltage and the functional relationship of discharging capacity-open circuit voltage, which are also preset relationships.

[0043] When the charge and discharge direction is charging, the preset relationship is the functional relationship of charge capacity-open circuit voltage. When the charge and discharge direction is discharging, the preset relationship is the functional relationship of discharge capacity-open circuit voltage. When the charge and discharge direction is charging, the preset relationship is the functional relationship of charge capacity-open circuit voltage, and the current capacity is calculated using the current open circuit voltage and the functional relationship of charge capacity-open circuit voltage. When the charge and discharge direction is discharging, the preset relationship is the functional relationship of discharge capacity-open circuit voltage, and the current capacity is calculated using the current open circuit voltage and the functional relationship of discharge capacity-open circuit voltage.

[0044] In a possible implementation of the first aspect, obtaining the target power corresponding to the target gear position according to the charging and discharging direction includes:

[0045] Obtain the target open circuit voltage corresponding to the target gear position according to the charge and discharge direction,

[0046] Acquiring a preset relationship according to the charge and discharge direction, wherein the preset relationship includes a functional relationship of charge capacity-open circuit voltage and a functional relationship of discharge capacity-open circuit voltage;

[0047] The target power is determined according to the target open circuit voltage and the preset relationship.

[0048] When obtaining the target open-circuit voltage, the charge and discharge direction must be determined first. Different charge and discharge directions will result in different open-circuit voltages for the same gear. When the charge and discharge direction is the charging direction, the target open-circuit voltage corresponding to the target gear is determined using the functional relationship between the open-circuit voltage of the electrochromic device in the charging direction and the gear, and the functional relationship between the charge power and the open-circuit voltage is obtained at the same time. When the charge and discharge direction is the discharge direction, the open-circuit voltage corresponding to the target gear is determined using the functional relationship between the open-circuit voltage of the electrochromic device in the discharge direction and the gear, and the functional relationship between the discharge power and the open-circuit voltage is obtained at the same time.

[0049] When the charge and discharge direction is the charging direction, the preset relationship is the functional relationship of charging power-open circuit voltage. The target power is calculated based on the target open circuit voltage and the functional relationship of charging power-open circuit voltage, where the target open circuit voltage is determined based on the functional relationship of open circuit voltage-gear in the charging direction.

[0050] When the charge and discharge direction is the discharge direction, the preset relationship is the functional relationship of discharge capacity-open circuit voltage. The target capacity is calculated based on the target open circuit voltage and the functional relationship of discharge capacity-open circuit voltage, where the target open circuit voltage is determined based on the functional relationship of open circuit voltage-gear in the discharge direction.

[0051] In a possible implementation of the first aspect, obtaining the current open-circuit voltage corresponding to the current gear position includes:

[0052] Obtaining a currently measured open-circuit voltage of the electrochromic device and a historical target open-circuit voltage corresponding to the last time the current gear was switched;

[0053] Comparing the currently measured open circuit voltage with the historical target open circuit voltage,

[0054] If the difference between the current measured open circuit voltage and the historical target open circuit voltage is greater than a preset value, the current measured open circuit voltage is rectified to obtain the corrected current measured open circuit voltage.

[0055] The current measured open circuit voltage after correction is determined to be the current open circuit voltage corresponding to the current gear position.

[0056] Due to the material properties of the electrochromic device, when the material is stored for a long time, it will degrade, that is, power off. Power off means that the electrochromic device decays to 0V, and the current measured open-circuit voltage will be unequal to the historical target open-circuit voltage. In order to ensure the adjustment accuracy of the transmittance, it is determined whether their difference is greater than the preset value. If it is less than the preset value, there is no need to correct the current measured open-circuit voltage, and the current measured open-circuit voltage is determined to be the current open-circuit voltage corresponding to the current gear. If it is greater than the preset value, it is necessary to correct the current measured open-circuit voltage, and determine that the current measured open-circuit voltage after correction is the current open-circuit voltage corresponding to the current gear, so as to ensure that the electrochromic device is shifted to the precise transmittance range.

[0057] In a possible implementation of the first aspect, if the difference between the currently measured open-circuit voltage and the historical target open-circuit voltage is greater than a preset value, correcting the currently measured open-circuit voltage to obtain the corrected currently measured open-circuit voltage includes:

[0058] Obtain the highest gear open circuit voltage corresponding to the highest gear and the lowest gear open circuit voltage corresponding to the lowest gear;

[0059] Comparing the currently measured open-circuit voltage with the highest-level open-circuit voltage to obtain a first difference,

[0060] Compare the currently measured open-circuit voltage with the lowest gear open-circuit voltage to obtain a second difference,

[0061] comparing the first difference value and the second difference value,

[0062] If the first difference is less than the second difference, the electrochromic device is switched to the highest gear, and / or if the first difference is greater than the second difference, the electrochromic device is switched to the lowest gear,

[0063] switching the electrochromic device from the highest gear or the lowest gear to the current gear according to the historical target open-circuit voltage;

[0064] Obtaining the measured correction open-circuit voltage corresponding to the current gear position;

[0065] The measured rectified open-circuit voltage corresponding to the current gear position is determined as the current measured open-circuit voltage after rectification.

[0066] In this embodiment, it is determined whether the measured open-circuit voltage is close to the limit gear, and the gear is adjusted to the nearest measured gear. Since the highest gear and the lowest gear are calculated using fixed gear characterization parameters, there is no need to consider the charging and discharging direction. Experiments have shown that the parameters of the electrochromic device at the limit gear are fixed, which can reduce the calculation error caused by the direction, thereby improving the control accuracy.

[0067] In a possible implementation of the first aspect, obtaining the current open-circuit voltage corresponding to the current gear position includes: Obtaining a current measured open-circuit voltage of the electrochromic device and obtaining a historical target open-circuit voltage corresponding to the last switch to the current gear; comparing the current measured open-circuit voltage with the historical target open-circuit voltage, if the difference between the current measured open-circuit voltage and the historical target open-circuit voltage is greater than a preset value; the method further includes: obtaining a highest-gear open-circuit voltage corresponding to the highest gear and a lowest-gear open-circuit voltage corresponding to the lowest gear; comparing the current measured open-circuit voltage with the highest-gear open-circuit voltage to obtain a first difference, comparing the current measured open-circuit voltage with the lowest-gear open-circuit voltage to obtain a second difference, comparing the first difference with the second difference, if the first difference is less than the second difference, switching the electrochromic device to the highest gear, and / or, if the first difference is greater than the second difference, switching the electrochromic device to the lowest gear, and switching the electrochromic device from the highest gear or the lowest gear to the target gear according to the target open-circuit voltage. In this embodiment, the electrochromic device is first adjusted to the extreme gear position. Starting from the extreme gear position, there is no need to consider the original charge and discharge direction, so the entire logic is more accurate.

[0068] In a possible implementation of the first aspect, if the difference between the currently measured open-circuit voltage and the historical target open-circuit voltage is greater than a preset value, correcting the currently measured open-circuit voltage to obtain the corrected currently measured open-circuit voltage includes:

[0069] applying a driving voltage to the electrochromic device, wherein the driving voltage is equal to the historical target open circuit voltage,

[0070] charging the electrochromic device according to the driving voltage, and when the charging time reaches a preset time, switching the electrochromic device to the current gear according to the historical target open-circuit voltage;

[0071] Obtaining the measured correction open-circuit voltage corresponding to the current gear position;

[0072] The measured rectified open-circuit voltage corresponding to the current gear position is determined as the current measured open-circuit voltage after rectification.

[0073] In this embodiment, long charging is performed using a method that is greater than the target open-circuit voltage. As long as the time reaches the preset value, the electrochromic device can be adjusted to the historical gear; then the measured value of the current gear is used for calculation to reduce the calculation error caused by device attenuation, thereby improving the control accuracy.

[0074] In a possible implementation of the first aspect, if the difference between the currently measured open-circuit voltage and the historical target open-circuit voltage is greater than a preset value, correcting the currently measured open-circuit voltage to obtain the corrected currently measured open-circuit voltage includes:

[0075] Comparing the currently measured open circuit voltage with 0V;

[0076] If the currently measured open-circuit voltage is less than 0V, the electrochromic device is charged until the open-circuit voltage is equal to 0V, and the electrochromic device is switched to the current gear position according to the historical target open-circuit voltage; and / or, if the currently measured open-circuit voltage is greater than 0V, the electrochromic device is discharged until the open-circuit voltage is equal to 0V, and the electrochromic device is switched to the current gear position according to the historical target open-circuit voltage;

[0077] Obtaining the measured correction open-circuit voltage corresponding to the current gear position;

[0078] The measured rectified open-circuit voltage corresponding to the current gear position is determined as the current measured open-circuit voltage after rectification.

[0079] In a possible implementation of the first aspect, obtaining the current open circuit voltage corresponding to the current gear position includes: obtaining the current measured open circuit voltage of the electrochromic device, and obtaining the historical target open circuit voltage corresponding to the last switch to the current gear position; comparing the current measured open circuit voltage with the historical target open circuit voltage, if the difference between the current measured open circuit voltage and the historical target open circuit voltage is greater than a preset value; the method also includes: comparing the current measured open circuit voltage with 0V; if the current measured open circuit voltage is less than 0V, charging the electrochromic device to an open circuit voltage equal to 0V, and switching the electrochromic device to the current gear position according to the historical target open circuit voltage; and / or, if the current measured open circuit voltage is greater than 0V, discharging the electrochromic device to an open circuit voltage equal to 0V, and switching the electrochromic device to the target gear position according to the target open circuit voltage.

[0080] In a second aspect, an embodiment of the present application provides a shift control device for an electrochromic device, comprising:

[0081] Sampler, used to obtain the target gear and current gear;

[0082] a processor, configured to determine whether the target gear is a lowest gear or a highest gear, and if not, determine a charge-discharge direction according to the target gear and the current gear, and determine a first charge-discharge adjustment parameter required for shifting according to the charge-discharge direction, the target gear, and the current gear;

[0083] And / or, if so, the sampler is further configured to obtain a current gear characterizing parameter corresponding to the current gear, and obtain a fixed gear characterizing parameter corresponding to the target gear; the processor is further configured to determine a second charge-discharge adjustment parameter required for shifting based on the fixed gear characterizing parameter and the current gear characterizing parameter;

[0084] A driver is configured to switch the electrochromic device to the target gear position according to the first charge and discharge adjustment parameter or the second charge and discharge adjustment parameter.

[0085] In the second aspect of the present application, when performing a gear shift operation on the electrochromic device, the control device first determines whether the target gear is the lowest gear or the highest gear, and then gives different gear shift control logics based on the judgment result, so that the transmittance adjustment of the electrochromic device is more accurate.

[0086] When the target gear is not the lowest gear or the highest gear, the charge and discharge direction is first determined based on the target gear and the current gear. Then, the first charge and discharge adjustment parameter required for the gear shift is determined based on the charge and discharge direction, the target gear, and the current gear. This application determines the charge and discharge direction of the electrochromic device and provides the charge adjustment parameter corresponding to the charge direction or the discharge adjustment parameter corresponding to the discharge direction, thereby making the transmittance corresponding to the same gear closer.

[0087] When the target gear is the lowest gear or the highest gear, the electrochromic device only has a charging direction or a discharging direction. The second charge and discharge adjustment parameters required for shifting are determined based on the fixed characterization parameters corresponding to the target gear and the current gear characterization parameters corresponding to the current gear, so that the transmittance corresponding to the same gear when charging and discharging is closer.

[0088] The key point of this application is that when the target gear is not the lowest gear or the highest gear, the charging adjustment parameters required for shifting are determined according to the charging direction, and the discharge adjustment parameters required for shifting are determined according to the discharging direction. This avoids the problem in the prior art that the same adjustment parameters are used for shifting regardless of charging or discharging, resulting in a large difference in transmittance corresponding to switching to the same gear, affecting the experience.

[0089] When the target gear is the lowest gear or the highest gear, there is only the discharge direction or the charge direction in the control logic. In this case, the charge and discharge adjustment parameters can be determined directly based on the fixed values ​​of the target gear and the current gear, such as the fixed OCV or the fixed capacity Q, making the entire control logic simpler and more accurate.

[0090] In a possible implementation of the second aspect, the first charge-discharge adjustment parameter includes at least one of an open-circuit voltage and a charge;

[0091] The current gear characterization parameter includes at least one of open circuit voltage and power;

[0092] The fixed gear characterization parameter includes at least one of open circuit voltage and power;

[0093] The second charge and discharge adjustment parameter includes at least one of open circuit voltage and power.

[0094] When performing a gear shift operation on an electrochromic device, when the target gear is not the lowest gear or the highest gear, the first open-circuit voltage difference required for the gear shift can be determined based on the charge and discharge direction, the target gear and the current gear; the first charge difference required for the gear shift can also be determined based on the charge and discharge direction, the target gear and the current gear; the first open-circuit voltage difference required for the gear shift can also be determined based on the charge and discharge direction, the target gear and the current gear, and then the first charge difference required for the gear shift can be determined based on the functional relationship between the open-circuit voltage difference and the charge-open-circuit voltage. When the target gear is the lowest gear or the highest gear, the second open-circuit voltage difference required for shifting can be determined based on the current gear open-circuit voltage corresponding to the current gear and the fixed gear open-circuit voltage corresponding to the target gear; the second electric quantity difference required for shifting can also be determined based on the current gear electric quantity corresponding to the current gear and the fixed gear electric quantity corresponding to the target gear; the second open-circuit voltage difference required for shifting can also be determined based on the current gear open-circuit voltage corresponding to the current gear and the fixed gear open-circuit voltage corresponding to the target gear, and then the second electric quantity difference required for shifting can be determined based on the functional relationship between the open-circuit voltage difference and the electric quantity-open-circuit voltage.

[0095] In a possible implementation of the second aspect, the processor is further configured to:

[0096] Comparing the gear value of the current gear with the gear value of the target gear,

[0097] If the gear value of the target gear is greater than the gear value of the current gear, the charging and discharging direction is determined to be a charging direction.

[0098] If the gear value of the target gear is smaller than the gear value of the current gear, the charge-discharge direction is determined to be a discharge direction.

[0099] In a possible implementation of the second aspect, the sampler is further configured to:

[0100] Obtain the current open circuit voltage corresponding to the current gear position,

[0101] Obtaining a target open-circuit voltage corresponding to the target gear position according to the charge and discharge direction;

[0102] The processor is further configured to:

[0103] A first open circuit voltage difference required for shifting is determined according to the current open circuit voltage and the target open circuit voltage.

[0104] The current open-circuit voltage obtained by the sampler is the current measured open-circuit voltage. When the current measured open-circuit voltage meets the preset conditions, the current measured open-circuit voltage is directly used for subsequent calculations. When the current measured open-circuit voltage does not meet the preset conditions, the current measured open-circuit voltage needs to be corrected. When obtaining the target open-circuit voltage, the sampler must determine the charge and discharge direction. When the charge and discharge direction is the charging direction, the target open-circuit voltage corresponding to the target gear is determined by the functional relationship between the open-circuit voltage of the electrochromic device in the charging direction and the gear position. When the charge and discharge direction is the discharge direction, the open-circuit voltage corresponding to the target gear position is determined by the functional relationship between the open-circuit voltage of the electrochromic device in the discharge direction and the gear position.

[0105] The processor performs a difference operation on the current open circuit voltage and the target open circuit voltage, and takes an absolute value operation to obtain a first open circuit voltage difference.

[0106] In a possible implementation of the second aspect, the sampler is further configured to:

[0107] Get the current power corresponding to the current gear,

[0108] Obtaining a target power corresponding to the target gear position according to the charge and discharge direction;

[0109] The processor is further configured to:

[0110] A first power difference required for shifting is determined according to the current power and the target power.

[0111] In a possible implementation of the second aspect, the sampler is used to:

[0112] Obtain the current open circuit voltage corresponding to the current gear position,

[0113] Acquire a preset relationship according to the charge and discharge direction; wherein the preset relationship includes a functional relationship of charge capacity-open circuit voltage and a functional relationship of discharge capacity-open circuit voltage;

[0114] The processor is further configured to:

[0115] The current power is determined according to the current open circuit voltage and the preset relationship.

[0116] The current open circuit voltage obtained by the sampler is the current measured open circuit voltage. When the current measured open circuit voltage meets the preset conditions, the current measured open circuit voltage is directly used for subsequent calculations. When the current measured open circuit voltage does not meet the preset conditions, the current measured open circuit voltage needs to be corrected. Since the charge and discharge parameters are determined in combination with the charge and discharge direction in this application, the measured open circuit voltage may have an error compared to the previous target open circuit voltage due to power failure caused by device instability. If the measured OCV is directly used to determine the charge and discharge parameters, there will be errors. Therefore, it is necessary to correct the measured open circuit voltage so that the entire electrochromic device can achieve a more accurate transmittance range.

[0117] For the charging and discharging of the electrochromic device, two functional relationships need to be set, namely the functional relationship of charging capacity-open circuit voltage and the functional relationship of discharging capacity-open circuit voltage, which are also preset relationships.

[0118] When the charge and discharge direction is charging, the preset relationship is the functional relationship of charge capacity-open circuit voltage. When the charge and discharge direction is discharging, the preset relationship is the functional relationship of discharge capacity-open circuit voltage. When the charge and discharge direction is charging, the preset relationship is the functional relationship of charge capacity-open circuit voltage, and the current capacity is calculated using the current open circuit voltage and the functional relationship of charge capacity-open circuit voltage. When the charge and discharge direction is discharging, the preset relationship is the functional relationship of discharge capacity-open circuit voltage, and the current capacity is calculated using the current open circuit voltage and the functional relationship of discharge capacity-open circuit voltage.

[0119] In a possible implementation of the second aspect, the sampler is further configured to:

[0120] Obtain the target open circuit voltage corresponding to the target gear position according to the charge and discharge direction,

[0121] Acquire a preset relationship according to the charge and discharge direction; wherein the preset relationship includes a functional relationship of charge capacity-open circuit voltage and a functional relationship of discharge capacity-open circuit voltage;

[0122] The processor is further configured to:

[0123] The target power is determined according to the target open circuit voltage and the preset relationship.

[0124] When acquiring the target open-circuit voltage, the sampler 201 must first determine the charge / discharge direction. Different charge / discharge directions result in different open-circuit voltages for the same gear. When the charge / discharge direction is charging, the target open-circuit voltage corresponding to the target gear is determined using the functional relationship between the open-circuit voltage of the electrochromic device in the charging direction and the gear, while simultaneously acquiring the functional relationship between the charge quantity and the open-circuit voltage. When the charge / discharge direction is discharging, the open-circuit voltage corresponding to the target gear is determined using the functional relationship between the open-circuit voltage of the electrochromic device in the discharging direction and the gear, while simultaneously acquiring the functional relationship between the discharge quantity and the open-circuit voltage.

[0125] When the charge and discharge direction is the charging direction, the preset relationship is the functional relationship of charging power-open circuit voltage. The target power is calculated based on the target open circuit voltage and the functional relationship of charging power-open circuit voltage, where the target open circuit voltage is determined based on the functional relationship of open circuit voltage-gear in the charging direction.

[0126] When the charge and discharge direction is the discharge direction, the preset relationship is the functional relationship of discharge capacity-open circuit voltage. The target capacity is calculated based on the target open circuit voltage and the functional relationship of discharge capacity-open circuit voltage, where the target open circuit voltage is determined based on the functional relationship of open circuit voltage-gear in the discharge direction.

[0127] In a possible implementation of the second aspect, the sampler is further configured to:

[0128] Obtaining a currently measured open-circuit voltage of the electrochromic device and a historical target open-circuit voltage corresponding to the last time the current gear was switched;

[0129] The processor is further configured to:

[0130] Comparing the currently measured open circuit voltage with the historical target open circuit voltage,

[0131] If the difference between the current measured open circuit voltage and the historical target open circuit voltage is greater than a preset value, the current measured open circuit voltage is rectified to obtain the corrected current measured open circuit voltage.

[0132] The current measured open circuit voltage after correction is determined to be the current open circuit voltage corresponding to the current gear position.

[0133] Due to the material properties of the electrochromic device, when the material is stored for a long time, it will degrade, that is, power off. Power off means that the electrochromic device decays to 0V, and the current measured open-circuit voltage will be unequal to the historical target open-circuit voltage. In order to ensure the adjustment accuracy of the transmittance, when this happens, it will be determined whether the difference between them is greater than the preset value. If it is less than the preset value, there is no need to correct the current measured open-circuit voltage, and the current measured open-circuit voltage is determined to be the current open-circuit voltage corresponding to the current gear. If it is greater than the preset value, it is necessary to correct the current measured open-circuit voltage, and determine that the current measured open-circuit voltage after correction is the current open-circuit voltage corresponding to the current gear, so as to ensure that the electrochromic device is shifted to the precise transmittance range.

[0134] In a possible implementation of the second aspect, the sampler is further configured to:

[0135] Obtain the highest gear open circuit voltage corresponding to the highest gear and the lowest gear open circuit voltage corresponding to the lowest gear;

[0136] The processor is further configured to:

[0137] Comparing the currently measured open-circuit voltage with the highest-level open-circuit voltage to obtain a first difference,

[0138] Compare the currently measured open-circuit voltage with the lowest gear open-circuit voltage to obtain a second difference,

[0139] comparing the first difference and the second difference;

[0140] The driver is also used to:

[0141] If the first difference is less than the second difference, the electrochromic device is switched to the highest gear, and / or if the first difference is greater than the second difference, the electrochromic device is switched to the lowest gear,

[0142] switching the electrochromic device from the highest gear or the lowest gear to the current gear according to the historical target open-circuit voltage;

[0143] The sampler is further used to: obtain the measured deviation-correcting open-circuit voltage corresponding to the current gear position;

[0144] The processor is further configured to determine that the actually measured rectified open-circuit voltage corresponding to the current gear position is the currently measured open-circuit voltage after rectification.

[0145] In this embodiment, it is determined whether the measured open-circuit voltage is close to the limit gear, and the gear is adjusted to the nearest measured gear. Since the highest gear and the lowest gear are calculated using fixed gear characterization parameters, there is no need to consider the charging and discharging direction. Experiments have shown that the parameters of the electrochromic device at the limit gear are fixed, which can reduce the calculation error caused by the direction, thereby improving the control accuracy.

[0146] In a possible implementation of the second aspect, the driver is further configured to:

[0147] applying a driving voltage to the electrochromic device, wherein the driving voltage is equal to the historical target open circuit voltage,

[0148] charging the electrochromic device according to the driving voltage, and when the charging time reaches a preset time, switching the electrochromic device to the current gear according to the historical target open-circuit voltage;

[0149] The sampler is also used to:

[0150] Obtaining the measured correction open-circuit voltage corresponding to the current gear position;

[0151] The processor is further configured to determine that the actually measured rectified open-circuit voltage corresponding to the current gear position is the currently measured open-circuit voltage after rectification.

[0152] In this embodiment, long charging is performed using a method that is greater than the target open-circuit voltage. As long as the time reaches the preset value, the electrochromic device can be adjusted to the historical gear; then the measured value of the current gear is used for calculation to reduce the calculation error caused by device attenuation, thereby improving the control accuracy.

[0153] In a possible implementation of the second aspect, the processor is further configured to:

[0154] Comparing the currently measured open circuit voltage with 0V;

[0155] The driver is also used to:

[0156] If the currently measured open-circuit voltage is less than 0V, the electrochromic device is charged until the open-circuit voltage is equal to 0V, and the electrochromic device is switched to the current gear position according to the historical target open-circuit voltage; and / or, if the currently measured open-circuit voltage is greater than 0V, the electrochromic device is discharged until the open-circuit voltage is equal to 0V, and the electrochromic device is switched to the current gear position according to the historical target open-circuit voltage;

[0157] The sampler is also used to:

[0158] Obtaining the measured correction open-circuit voltage corresponding to the current gear position;

[0159] The processor is further configured to:

[0160] The measured rectified open-circuit voltage corresponding to the current gear position is determined as the current measured open-circuit voltage after rectification.

[0161] In a possible implementation of the second aspect, the sampler is further used to: obtain the current measured open-circuit voltage of the electrochromic device, and obtain the historical target open-circuit voltage corresponding to the last switch to the current gear; the processor is further used to: compare the current measured open-circuit voltage with the historical target open-circuit voltage, if the difference between the current measured open-circuit voltage and the historical target open-circuit voltage is greater than a preset value; the processor is further used to: compare the current measured open-circuit voltage with 0V; the driver is further used to: if the current measured open-circuit voltage is less than 0V, charge the electrochromic device to an open-circuit voltage equal to 0V, and switch the electrochromic device to the current gear according to the historical target open-circuit voltage, and / or, if the current measured open-circuit voltage is greater than 0V, discharge the electrochromic device to an open-circuit voltage equal to 0V, and switch the electrochromic device to the target gear according to the target open-circuit voltage.

[0162] In a third aspect, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon. When the computer program is run on an operator, the shift control method as described in any one of the first aspects is executed.

[0163] In a fourth aspect, an embodiment of the present application provides a shift control system for an electrochromic device, comprising a terminal platform and a shift control device as described in any one of the second aspects, wherein the shift control device receives a shift control instruction sent by the terminal platform.

[0164] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0165] An embodiment of the present application provides a shift control method for an electrochromic device. When performing a shift operation, it is first determined whether the target gear is the lowest gear or the highest gear. Then, different shift control methods are determined based on the judgment result, so that the transmittance adjustment of the electrochromic device is more accurate.

[0166] When the target gear is not the lowest gear or the highest gear, the control device first determines the charge and discharge direction based on the target gear and the current gear, and then determines the first charge and discharge adjustment parameter required for the gear shift based on the charge and discharge direction, the target gear, and the current gear. This application determines the charge and discharge direction of the electrochromic device and provides the charge adjustment parameter corresponding to the charge direction or the discharge adjustment parameter corresponding to the discharge direction, thereby ensuring that the transmittance corresponding to charging or discharging to the same gear is closer.

[0167] When the target gear is the lowest gear or the highest gear, the electrochromic device only has a charging direction or a discharging direction. The second charge and discharge adjustment parameters required for shifting are determined based on the fixed gear characterization parameters corresponding to the target gear and the current gear characterization parameters corresponding to the current gear, so that the transmittance corresponding to charging or discharging to the same gear is closer.

[0168] It can be understood that the beneficial effects of the second to fourth 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

[0169] 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.

[0170] FIG1 is a first schematic diagram showing the functional relationship between the open circuit voltage and the gear position of an electrochromic device in the charging direction and the discharging direction;

[0171] FIG2 is a schematic block diagram of a shift control device for an electrochromic device according to an embodiment of the present application;

[0172] FIG3 is a schematic block diagram of a shift control system of an electrochromic device provided in one embodiment of the present application;

[0173] FIG4 is a second schematic diagram showing the functional relationship between the open circuit voltage and the gear position of the electrochromic device in the charging direction and the discharging direction;

[0174] FIG5 is a schematic flow chart of a shift control method for an electrochromic device provided in one embodiment of the present application;

[0175] FIG6 is an exemplary flow chart of step S503 in FIG5 ;

[0176] FIG7 is an exemplary flow chart of step S503 in FIG5 ;

[0177] FIG8 is an exemplary flow chart of step S503 in FIG5 ;

[0178] FIG9 is a schematic block diagram of a computer-readable storage medium and an arithmetic unit provided in one embodiment of the present application;

[0179] In the figure: 200, shift control device; 201, sampler; 202, processor; 203, driver; 300, terminal platform; 901, computer-readable storage medium; 902, operator. DETAILED DESCRIPTION

[0180] 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.

[0181] 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.

[0182] 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.

[0183] 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.

[0184] 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.

[0185] 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.

[0186] 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.

[0187] 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.

[0188] Electrochromic components are usually divided into different gears according to the size of the transmittance of the electrochromic device (generally including the highest gear, the lowest gear and the intermediate gear between the lowest gear and the highest gear). Then, through electrical testing experiments, the open circuit voltage and capacity corresponding to each gear are obtained, that is, the functional relationship of open circuit voltage-gear-capacity, which is formed into a relationship or relationship table and stored in the memory of the control device. Then, the gear switching of the electrochromic device is controlled according to the open circuit voltage to adjust the transmittance.

[0189] While using an electrochromic device, the inventors discovered that Figure 1 shows the functional relationship between the open-circuit voltage and the gear position of the electrochromic device in the charging and discharging directions. As can be seen from Figure 1, the functional relationship between the open-circuit voltage and the gear position of the electrochromic device in the charging and discharging directions is different. If the same open-circuit voltage of 0.3V is used for adjustment, the transmittance corresponding to charging the electrochromic device to 0.3V is TL1, and the transmittance corresponding to discharging the electrochromic device to 0.3V is TL2. Therefore, if the electrochromic device uses a single open-circuit voltage-gear position relationship, the transmittance corresponding to charging and discharging to the same gear position will differ significantly, resulting in inaccurate transmittance adjustment of the electrochromic device.

[0190] In response to the above problems, an embodiment of the present application provides a shift control device for an electrochromic device. As shown in Figure 2, the shift control device 200 may include: a sampler 201, used to obtain a target gear and a current gear; a processor 202, used to determine whether the target gear is the lowest gear or the highest gear, and if not, determine the charge and discharge direction according to the target gear and the current gear, and determine the first charge and discharge adjustment parameter required for shifting according to the charge and discharge direction, the target gear and the current gear; the sampler 201 is also used for and / or, if so, obtaining the current gear characterization parameter corresponding to the current gear, and obtaining the fixed gear characterization parameter corresponding to the target gear; the processor 202 is also used to determine the second charge and discharge adjustment parameter required for shifting based on the fixed gear characterization parameter and the current gear characterization parameter; a driver 203 is used to switch the electrochromic device to the target gear according to the first charge and discharge adjustment parameter or the second charge and discharge adjustment parameter.

[0191] In an embodiment of the present application, the control device 200 further includes a memory, in which the functional relationship of the open circuit voltage-gear in the charging direction, the functional relationship of the open circuit voltage-gear in the discharging direction, the functional relationship of the charging power-open circuit voltage, and the functional relationship of the discharging power-open circuit voltage are stored. These relationships can be in the form of a relationship table or in the form of a functional relationship. In addition, the above relationship can be a relationship obtained by electrical testing of electrochromic devices of the same type. When the electrochromic device is shifted, the user inputs a dimming command carrying the target gear. The control device first determines whether the target gear is the lowest gear or the highest gear, and then gives the gear shift control logic of the target gear according to the judgment result, so that the transmittance of the electrochromic device can be adjusted more accurately.

[0192] When the target gear is not the lowest or highest gear, the charge and discharge direction is first determined based on the target gear and the current gear. Then, the first charge and discharge adjustment parameter required for the gear shift is determined based on the charge and discharge direction, the target gear, and the current gear. This application determines the charge and discharge direction of the electrochromic device and provides the charge adjustment parameter corresponding to the charge direction or the discharge adjustment parameter corresponding to the discharge direction. This allows the corresponding transmittances when charging or discharging to the same gear to be closer, improving the user experience.

[0193] When the target gear is the lowest gear or the highest gear, the electrochromic device has only a charging direction or a discharging direction. For example, when the target gear is the highest gear, it has only a charging direction, and when the target gear is the lowest gear, it has only a discharging direction. Whether the highest gear corresponds to the charging or discharging direction is related to the specific electrochromic material. And the open circuit voltage corresponding to the highest gear and the lowest gear of the device is a fixed value. Charging and discharging with a fixed value is convenient for control. For the intermediate gears, charging and discharging are performed according to the functional relationship between the gear and the open circuit voltage. Therefore, in this embodiment, when the target gear is the lowest gear or the highest gear, the second charge and discharge adjustment parameter required for shifting is determined based on the fixed characterization parameter corresponding to the target gear and the current gear characterization parameter corresponding to the current gear, so that the corresponding transmittance when charging or discharging to the same gear is closer, thereby improving the user experience.

[0194] The key point of this application is that, on the one hand, fixed parameter shifting is used when the target gear is the lowest or highest gear, and when the target gear is an intermediate gear, charging or discharging is performed according to the gear position-open circuit voltage function. This ensures that the extreme gear positions of the electrochromic device can meet the user's consistency requirements.

[0195] On the other hand, in the present application, when the target gear is not the lowest gear or the highest gear, charging or discharging is performed based on the gear-open circuit voltage function, and the charging adjustment parameters required for shifting are determined according to the charging direction, and the discharge adjustment parameters required for shifting are determined according to the discharging direction. This avoids the situation in the prior art where the same adjustment parameters are used for shifting regardless of charging or discharging, resulting in a large difference in transmittance corresponding to switching to the same gear, making the transmittance corresponding to charging or discharging to the same gear closer.

[0196] An improvement is made based on the above embodiment, and the difference from the above embodiment is that the driver is also used to: if the first difference is less than the second difference, switch the electrochromic device to the highest gear, and / or, if the first difference is greater than the second difference, switch the electrochromic device to the lowest gear, and switch the electrochromic device from the highest gear or the lowest gear to the target gear according to the target open-circuit voltage.

[0197] Since the charge amount and open-circuit voltage of the lowest gear and the highest gear are constant and are not affected by the direction, in this embodiment, the attenuated device is adjusted back to the highest gear or the lowest gear, and then directly adjusted from the highest gear to the target gear, further improving the accuracy of the electrochromic device shifting.

[0198] In the embodiment of the present application, when the target gear is the lowest gear or the highest gear, the charge and discharge directions are only the charge direction or the discharge direction. The open circuit voltages of the lowest gear corresponding to charge and discharge are equal, and the open circuit voltages of the highest gear corresponding to charge and discharge are equal.

[0199] For example, taking the electrochromic device as an example, which is divided into 5 gears according to the transmittance, the open circuit voltages corresponding to the 5 gears in the charging direction are OCV1, OCV2, OCV3, OCV4, and OCV5, and the open circuit voltages corresponding to the 5 gears in the discharging direction are OCV1, OCV2', OCV3', OCV4', and OCV5. Theoretically, the open circuit voltages of the lowest gear corresponding to charging and discharging are equal, and the open circuit voltages of the highest gear corresponding to charging and discharging are equal.

[0200] In the embodiment of the present application, the electrochromic device is electrochromic glass.

[0201] In the embodiment of the present application, the current gear is the last target gear.

[0202] In an embodiment of the present application, the sampler 201 can be a separate structural component, or it can be integrated with other components of the shift control device 200, for example, integrated with the processor 202. There is no special restriction on the number and type of samplers 201. In some embodiments, the number of samplers 201 can be one or more (two or more). When there are two samplers 201, one of the samplers 201 is used to obtain the target gear and the current gear, and the other sampler 201 is used to obtain the current gear characterization parameters corresponding to the current gear, and obtain the fixed gear characterization parameters corresponding to the target gear. In other embodiments, the sampler 201 may include a detection circuit for obtaining the target gear and the current gear. In yet other embodiments, the sampler 201 may also include a sampling circuit for detecting and obtaining the current gear characterization parameters corresponding to the current gear, and obtaining the fixed gear characterization parameters corresponding to the target gear.

[0203] The shift control device 200 provided in the embodiment of the present application may further include a receiver and a transmitter (not shown in the figure). In some embodiments, the receiver may be used to receive a shift instruction carrying target gear information. There is no particular restriction on the order in which the receiver and the sampler 201 start working, that is, there is no particular restriction on the order between receiving the shift instruction and obtaining the target gear and the current gear. In some embodiments, the receiver may start working first to receive the shift instruction, that is, after receiving the shift instruction, the sampler 201 starts working again to obtain the target gear and the current gear. In other embodiments, the sampler 201 may also start working first to obtain the target gear and the current gear, and then the receiver starts working again to receive the shift instruction. In yet other embodiments, the receiver and the sampler 201 may start working at the same time, that is, to receive the shift instruction and to obtain the target gear and the current gear, respectively. After the sampler 201 starts working, there is no special restriction on the order of obtaining the target gear and the current gear. For example, the target gear and the current gear can be obtained at the same time, or the target gear can be obtained first and then the current gear, or the current gear can be obtained first and then the target gear. In addition, the acquisition of the target gear and the current gear can be performed simultaneously before receiving the gear shift instruction, or simultaneously after receiving the gear shift instruction, or respectively before and after receiving the gear shift instruction. There is no restriction here.

[0204] In some embodiments, the transmitter is configured to transmit a shift completion signal when the target gear is shifted. This signal can be promptly transmitted to a signal transceiver (e.g., a terminal platform) to trigger subsequent control steps of the electrochromic device.

[0205] In some embodiments, the first charge-discharge adjustment parameter includes at least one of an open circuit voltage and a charge;

[0206] The current gear position characterization parameter includes at least one of open circuit voltage and power;

[0207] The fixed gear characterization parameter includes at least one of open circuit voltage and power;

[0208] The second charge and discharge adjustment parameter includes at least one of open circuit voltage and power.

[0209] When performing a gear shift operation on an electrochromic device, when the target gear is not the lowest gear or the highest gear, the first open-circuit voltage difference required for the gear shift is determined based on the charge and discharge direction, the target gear and the current gear; the first charge difference required for the gear shift can also be determined based on the charge and discharge direction, the target gear and the current gear; the first open-circuit voltage difference required for the gear shift can also be determined based on the charge and discharge direction, the target gear and the current gear, and then the first charge difference required for the gear shift is determined based on the functional relationship between the open-circuit voltage difference and the charge-open-circuit voltage.

[0210] And / or, when the target gear is the lowest gear or the highest gear, the second open-circuit voltage difference required for shifting can be determined based on the current gear open-circuit voltage corresponding to the current gear and the fixed gear open-circuit voltage corresponding to the target gear; the second electric quantity difference required for shifting can also be determined based on the current gear electric quantity corresponding to the current gear and the fixed gear electric quantity corresponding to the target gear; the second open-circuit voltage difference required for shifting can also be determined based on the current gear open-circuit voltage corresponding to the current gear and the fixed gear open-circuit voltage corresponding to the target gear, and then the second electric quantity difference required for shifting can be determined based on the functional relationship between the open-circuit voltage difference and the electric quantity-open-circuit voltage.

[0211] Based on any of the above embodiments, the processor 202 is further configured to: compare the gear value of the current gear with the gear value of the target gear,

[0212] If the gear value of the target gear is greater than the gear value of the current gear, the charging and discharging direction is determined to be the charging direction.

[0213] If the gear value of the target gear is smaller than the gear value of the current gear, the charge-discharge direction is determined to be the discharge direction.

[0214] For example, assuming the target gear is 3 and the current gear is 1, and the target gear is greater than the current gear, the charge and discharge direction can be determined to be the charging direction based on the curve relationship shown in Figure 1. Assuming the target gear is 2 and the current gear is 5, and the target gear is less than the current gear, the charge and discharge direction can be determined to be the discharging direction based on the curve relationship shown in Figure 1. It is worth noting that the specific method for determining charge and discharge varies depending on the material of the electrochromic device.

[0215] In some embodiments, the sampler 201 is further configured to: obtain the current open circuit voltage corresponding to the current gear position,

[0216] Obtain the target open circuit voltage corresponding to the target gear position according to the charge and discharge direction.

[0217] The current open circuit voltage of the electrochromic device obtained by the sampler 201 is the current measured open circuit voltage. When the current measured open circuit voltage meets the preset conditions, the current measured open circuit voltage is directly used for subsequent calculations. When the current measured open circuit voltage does not meet the preset conditions, the current measured open circuit voltage needs to be corrected. When obtaining the target open circuit voltage, the sampler 201 determines the charge and discharge direction. When the charge and discharge direction is the charging direction, the target open circuit voltage corresponding to the target gear is determined by using the functional relationship between the open circuit voltage of the electrochromic device in the charging direction and the gear position. When the charge and discharge direction is the discharge direction, the open circuit voltage corresponding to the target gear position is determined by using the functional relationship between the open circuit voltage of the electrochromic device in the discharge direction and the gear position.

[0218] The processor 202 is further configured to determine a first open circuit voltage difference required for shifting based on the current open circuit voltage and the target open circuit voltage. The processor 202 performs a difference operation on the current open circuit voltage and the target open circuit voltage, and then takes an absolute value operation to obtain the first open circuit voltage difference.

[0219] Exemplarily, assuming that the first open circuit voltage difference is represented by ΔOCV1, the current open circuit voltage is V1, and the target open circuit voltage is V2, then ΔOCV1=|V1-V2〡.

[0220] In conjunction with Figure 1, if the gear corresponding to the transmittance of 2.8% is the fourth gear, that is, the gear corresponding to the transmittance TL1 in Figure 1, it is necessary to switch between the first gear and the fourth gear. When it is necessary to switch from the first gear to the fourth gear, charging is required. The current open circuit voltage corresponding to the first gear is -0.55V, and the target open circuit voltage corresponding to the target gear with a corresponding transmittance of 2.8% is 0.7V, so the first open circuit voltage difference is about 1.25V. When it is necessary to switch from the fourth gear to the first gear, discharge is required. The target open circuit voltage corresponding to the transmittance of 2.8% is 0.3V, while the first gear corresponds to -0.6V, and the first open circuit voltage difference is about 0.9V. It can be seen from this that when the electrochromic device is charged and discharged to the same target gear, the open circuit voltage value of the target gear is different. Or the adjustment parameters required for switching charging and discharging between the two gears are different. This application distinguishes the charging and discharging directions and provides the charging adjustment parameters corresponding to the charging direction and the discharge adjustment parameters corresponding to the discharging direction, so that the transmittance corresponding to the gear is more accurate. It is worth noting that in other embodiments, the voltage of the first gear in Figure 1 is slightly deviated, and in actual use it will be fitted to a point of -0.6V. In addition, the figure is only a charge-discharge schematic diagram of an electrochromic device of one material. Depending on the material, the values ​​corresponding to each transmittance are also different.

[0221] In some embodiments, the sampler 201 is further used to: obtain the current power corresponding to the current gear, and obtain the target power corresponding to the target gear according to the charge and discharge direction.

[0222] When acquiring the target power corresponding to the target gear position, the sampler 201 needs to determine the charge and discharge direction to make the adjustment of the transmittance more accurate.

[0223] The processor 202 is further configured to determine a first power difference required for shifting according to the current power and the target power.

[0224] The processor 202 performs a difference operation on the current power level and the target power level, and takes an absolute value to obtain a first power difference value.

[0225] Exemplarily, assuming that the first power difference is represented by ΔQ1, the current power is Q1, and the target power is Q2, then ΔQ1=|Q1-Q2〡.

[0226] In some embodiments, the sampler 201 is used to:

[0227] Get the current open circuit voltage corresponding to the current gear,

[0228] A preset relationship is obtained according to the charge and discharge direction; wherein the preset relationship includes a functional relationship of charging power-open circuit voltage and a functional relationship of discharging power-open circuit voltage.

[0229] The current open circuit voltage obtained by the sampler 201 is the current measured open circuit voltage. When the current measured open circuit voltage meets the preset conditions, the current measured open circuit voltage is directly used for subsequent calculations. When the current measured open circuit voltage does not meet the preset conditions, the current measured open circuit voltage needs to be corrected.

[0230] Since the switching between the two gears is also related to the charging and discharging direction, two functional relationships need to be set for the charging and discharging of the electrochromic device, namely the functional relationship of charging power-open circuit voltage and the functional relationship of discharging power-open circuit voltage, that is, the preset relationship. These two functional relationships are obtained by optimizing the linear function of power and open circuit voltage, respectively. Among them, the linear function of power and open circuit voltage is expressed as Q=k*OCV+B, where Q represents power, k represents slope, B represents intercept, and OCV represents open circuit voltage. By calculating the need to charge or release Q, Q can be used as the cut-off condition in the process of controlling the gear shift. That is, when the amount of power charged or released reaches Q, the charging or discharging of the electrochromic device is stopped.

[0231] The linear function of charge and open circuit voltage is optimized to a 2-5th order polynomial function. The higher the polynomial order, the higher the accuracy. The design requirement is that the fitting degree R2 ≥ 99%, thereby obtaining the functional relationship between charge capacity and open circuit voltage, which can be specifically expressed as:

[0232] Qc=A1*OCV5+B1*OCV4+C1*OCV3+D1*OCV2+E1*OCV+F1, Qc is the charging capacity, A1, B1, C1, D1, E1, F1 are the coefficients corresponding to charging.

[0233] Similarly, the functional relationship between discharge capacity and open circuit voltage can be obtained, which can be specifically expressed as Qf=A2*OCV5+B2*OCV4+C2*OCV3+D2*OCV2+E2*OCV+F2, where Qf is the discharge capacity, and A2, B2, C2, D2, E2, and F2 are all coefficients corresponding to discharge.

[0234] When the charge and discharge direction is the charge direction, the preset relationship is the functional relationship of the charge capacity-open circuit voltage. When the charge and discharge direction is the discharge direction, the preset relationship is the functional relationship of the discharge capacity-open circuit voltage.

[0235] In a further improvement based on any of the above embodiments, the processor 202 is further configured to:

[0236] The current power is determined based on the current open circuit voltage and a preset relationship.

[0237] When the charge and discharge direction is the charging direction, the preset relationship is the function relationship of charging capacity-open circuit voltage. The current open circuit voltage and the function relationship of charging capacity-open circuit voltage are used to calculate the current capacity: Qc=A1*OCV5+B1*OCV4+C1*OCV3+D1*OCV2+E1*OCV+F1.

[0238] When the charge and discharge direction is the discharge direction, the preset relationship is the function relationship of discharge capacity-open circuit voltage. The current capacity is calculated using the current open circuit voltage and the function relationship of discharge capacity-open circuit voltage: Qf=A2*OCV5+B2*OCV4+C2*OCV3+D2*OCV2+E2*OCV+F2.

[0239] For example, assuming that the current gear is 1 and the target gear is 3, the current open circuit voltage corresponding to the current gear is Vd1, and the charging and discharging direction is determined to be the charging direction based on the current gear and the target gear, then the current open circuit voltage Vd1 is substituted into the relationship Qc=A1*OCV5+B1*OCV4+C1*OCV3+D1*OCV2+E1*OCV+F1 to obtain the current power.

[0240] Assume that the current gear is 5 and the target gear is 2. The current open circuit voltage corresponding to the current gear is Vd2. According to the current gear and the target gear, the charging and discharging direction is determined to be the discharge direction. Then, the current open circuit voltage Vd2 is substituted into the relationship Qf=A2*OCV5+B2*OCV4+C2*OCV3+D2*OCV2+E2*OCV+F2 to obtain the current power.

[0241] In some embodiments, in order to achieve the desired transmittance more accurately, each gear can be used as the first and last gear to fit into an independent curve, as shown in Figure 4, and then the functional relationship between charge / discharge capacity and open circuit voltage is determined, taking gear 5 as an example.

[0242] The functional relationship between charging capacity and open circuit voltage corresponding to charging level 1→5 is as follows:

[0243] Qc1 = A11*OCV5 + B11*OCV4 + C11*OCV3 + D11*OCV2 + E11*OCV + F11, where Qc1 is the charging capacity corresponding to charging level 1→5, and A11, B11, C11, D11, E11, and F11 are the coefficients corresponding to charging level 1→5.

[0244] The functional relationship between discharge capacity and open circuit voltage corresponding to discharge level 5→1 is as follows:

[0245] Qf1 = A21*OCV5 + B21*OCV4 + C21*OCV3 + D21*OCV2 + E21*OCV + F21, where Qf1 is the discharge capacity corresponding to the discharge level 5→1, and A21, B21, C21, D21, E21, and F21 are the coefficients corresponding to the discharge level 5→1.

[0246] The functional relationship between discharge capacity and open circuit voltage corresponding to discharge level 4→1 is as follows:

[0247] Qf2 = A31*OCV5 + B31*OCV4 + C31*OCV3 + D31*OCV2 + E31*OCV + F31, where Qf2 is the discharge capacity corresponding to the discharge level 4→1, and A31, B31, C31, D31, E31, and F31 are the coefficients corresponding to the discharge level 4→1.

[0248] The functional relationship between discharge capacity and open circuit voltage corresponding to discharge level 3→1 is as follows:

[0249] Qf3 = A41*OCV5 + B41*OCV4 + C41*OCV3 + D41*OCV2 + E41*OCV + F41, Qf3 is the discharge capacity corresponding to discharge 3→1 gear, A41, B41, C41, D41, E41 and F41 are the coefficients corresponding to discharge 3→1 gear.

[0250] The functional relationship between discharge capacity and open circuit voltage corresponding to discharge 2→1 is as follows:

[0251] Qf4=A51*OCV5+B51*OCV4+C51*OCV3+D51*OCV2+E51*OCV+F51, Qf4 is the discharge capacity corresponding to the discharge 2→1 gear, A51, B51, C51, D51, E51 and F51 are the coefficients corresponding to the discharge 2→1 gear.

[0252] For example, if the current gear is 1 and the OCV corresponding to the current gear is a, then a is brought into

[0253] The current power is obtained by using the relationship Qc1 = A11*OCV5 + B11*OCV4 + C11*OCV3 + D11*OCV2 + E11*OCV + F11.

[0254] Then discharge 3 → 2 gears, the current gear is 3 gears, the current gear corresponding to the OCV = b, then b is substituted into

[0255] The current power is obtained by using the relationship formula Qc1 = A11*OCV5 + B11*OCV4 + C11*OCV3 + D11*OCV2 + E11*OCV + F11, or the relationship formula Qf3 = A41*OCV5 + B41*OCV4 + C41*OCV3 + D41*OCV2 + E41*OCV + F41.

[0256] In some embodiments, current and time can be used as protection conditions during the electrochromic device's shifting operation to prevent overcharging or over-discharging. The time range is 100 to 500 seconds, and the current range is 20 to 200 mA. The current and time settings vary depending on the size of the electrochromic device.

[0257] In some embodiments, if the electrochromic device switches to different gears at different temperatures, the operating voltage used by the electrochromic device will also be different. At this time, it is necessary to retest the functional relationship between charge / discharge capacity and open circuit voltage and set the control logic for different temperature zones.

[0258] When there are fewer temperature zones, the characteristic temperature is selected through testing, and the functional relationship between charge / discharge capacity and open circuit voltage is set within the characteristic temperature range; when there are more temperature zones, the relationship between different temperature intervals can be found, and the temperature can also be used as a variable to fit the functional relationship between charge / discharge capacity and open circuit voltage.

[0259] Based on any of the above embodiments, the sampler 201 is further configured to:

[0260] Obtain the target open circuit voltage corresponding to the target gear according to the charge and discharge direction,

[0261] A preset relationship is obtained according to the charge and discharge direction; wherein the preset relationship includes a functional relationship of charging power-open circuit voltage and a functional relationship of discharging power-open circuit voltage.

[0262] When obtaining the target open-circuit voltage, the sampler 201 must first determine the charge and discharge direction. When the charge and discharge direction is the charging direction, the target open-circuit voltage corresponding to the target gear is determined by using the functional relationship between the open-circuit voltage and gear of the electrochromic device in the charging direction, and the functional relationship between the charging power and the open-circuit voltage is obtained at the same time; when the charge and discharge direction is the discharging direction, the open-circuit voltage corresponding to the target gear is determined by using the functional relationship between the open-circuit voltage and gear of the electrochromic device in the discharging direction, and the functional relationship between the discharge power and the open-circuit voltage is obtained at the same time.

[0263] The processor 202 is further configured to:

[0264] The target power is determined based on the target open circuit voltage and a preset relationship.

[0265] When the charge and discharge direction is the charging direction, the preset relationship is the functional relationship of the charging capacity-open circuit voltage. The target capacity is calculated according to the functional relationship between the target open circuit voltage and the charging capacity-open circuit voltage: Qc=A1*OCV5+B1*OCV4+C1*OCV3+D1*OCV2+E1*OCV+F1, where the target open circuit voltage is determined according to the functional relationship between the open circuit voltage and the gear in the charging direction.

[0266] When the charge and discharge direction is the discharge direction, the preset relationship is the functional relationship of the discharge capacity-open circuit voltage. The target capacity is calculated according to the target open circuit voltage and the functional relationship of the discharge capacity-open circuit voltage: Qf=A2*OCV5+B2*OCV4+C2*OCV3+D2*OCV2+E2*OCV+F2, where the target open circuit voltage is determined according to the functional relationship of the open circuit voltage-gear in the discharge direction.

[0267] For example, assuming that the current gear is 1 and the target gear is 3, the charging and discharging direction is determined to be the charging direction according to the current gear and the target gear. The target open circuit voltage corresponding to the target gear is determined to be Vm1 according to the functional relationship between the open circuit voltage and the gear in the charging direction. Then, the target open circuit voltage Vm1 is substituted into the relationship Qc=A1*OCV5+B1*OCV4+C1*OCV3+D1*OCV2+E1*OCV+F1 to obtain the target power.

[0268] Assume that the current gear is 5 and the target gear is 2. According to the current gear and the target gear, the charge and discharge direction is determined to be the discharge direction. According to the function relationship between the open circuit voltage and the gear in the discharge direction, the target open circuit voltage corresponding to the target gear is determined to be Vm2. Then, the target open circuit voltage Vm2 is brought into

[0269] The target power is obtained by the relationship Qf=A2*OCV5+B2*OCV4+C2*OCV3+D2*OCV2+E2*OCV+F2.

[0270] Based on any of the above embodiments, an improvement is made. After determining the first open circuit voltage difference required for shifting gears based on the current open circuit voltage and the target open circuit voltage, the processor is further used to: confirm a preset relationship corresponding to the charging or discharging direction, and determine the amount of electricity to be charged based on the first open circuit voltage difference and the preset relationship corresponding to charging; or determine the amount of electricity to be released based on the first open circuit voltage difference and the preset relationship corresponding to discharging.

[0271] In the above description, it is mentioned that the current open circuit voltage corresponding to the current gear is the current measured open circuit voltage. Whether to correct the current measured open circuit voltage is given below as a basis for judgment.

[0272] In some embodiments, the sampler 201 is further configured to:

[0273] Obtain the current measured open circuit voltage of the electrochromic device and the historical target open circuit voltage corresponding to the last time the current gear was switched.

[0274] The processor 202 is further configured to:

[0275] Compare the current measured open circuit voltage with the historical target open circuit voltage.

[0276] If the difference between the current measured open circuit voltage and the historical target open circuit voltage is greater than the preset value, the current measured open circuit voltage is rectified to obtain the corrected current measured open circuit voltage.

[0277] The current measured open circuit voltage after correction is determined to be the current open circuit voltage corresponding to the current gear position.

[0278] In the embodiment of the present application, the preset value is between 0.05V and 0.2V.

[0279] Due to the material properties of the electrochromic device, when the material is stored for a long time, it will degrade, that is, power off. Power off means that the electrochromic device decays to 0V, and the current measured open-circuit voltage will be unequal to the historical target open-circuit voltage. In order to ensure the adjustment accuracy of the transmittance, when this happens, it will be determined whether the difference between them is greater than the preset value. If it is less than the preset value, there is no need to correct the current measured open-circuit voltage, and the current measured open-circuit voltage is determined to be the current open-circuit voltage corresponding to the current gear. If it is greater than the preset value, it is necessary to correct the current measured open-circuit voltage, and determine that the current measured open-circuit voltage after correction is the current open-circuit voltage corresponding to the current gear, so as to ensure that the electrochromic device is shifted to the precise transmittance range.

[0280] In some embodiments, the sampler 201 is further configured to obtain a highest gear open-circuit voltage corresponding to the highest gear and a lowest gear open-circuit voltage corresponding to the lowest gear.

[0281] The processor 202 is further configured to: compare the currently measured open circuit voltage with the highest gear open circuit voltage to obtain a first difference; compare the currently measured open circuit voltage with the lowest gear open circuit voltage to obtain a second difference; and compare the first difference with the second difference.

[0282] The driver 203 is also used to: if the first difference is less than the second difference, switch the electrochromic device to the highest gear, and / or, if the first difference is greater than the second difference, switch the electrochromic device to the lowest gear. Taking 5 gears as an example, assuming that the open circuit voltage corresponding to 5 gear is 0.5V, the open circuit voltage corresponding to 4 gear is 0.2V, the open circuit voltage corresponding to 3 gear is 0V, the open circuit voltage corresponding to 2 gear is -0.2V, and the open circuit voltage corresponding to 1 gear is -0.5V. Assuming that the current measured open circuit voltage is 0.3V and the historical target open circuit voltage is 0.4V, and their difference is 0.1V, which is greater than the preset value, it is necessary to correct the current measured open circuit voltage. Among them, the highest gear is 5, the highest gear open circuit voltage is 0.5V, the lowest gear is 1, and the lowest gear open circuit voltage is -0.5V, then 0.3V and 0.5V are compared to obtain a first difference of 0.2V. Comparing 0.3V and -0.5V, a second difference of 0.8V is obtained. If the first difference is smaller than the second difference, the electrochromic device is switched to the highest gear.

[0283] In some embodiments, after the driver switches to the lowest or highest gear, it switches the electrochromic device from the highest or lowest gear to the target gear. Because the gear parameters of the lowest or highest gear are fixed, when the lowest or highest gear is used as the starting gear, only the discharge direction or the charge direction exists. Therefore, only the parameters of the target gear corresponding to the charge direction or the discharge direction need to be considered, thereby improving the control accuracy of the electrochromic device and simplifying the overall control logic.

[0284] An improvement is made based on any of the above embodiments, and the difference from the above embodiments is that after the driver switches to the lowest gear or the highest gear, the driver is also used to: switch the electrochromic device from the highest gear or the lowest gear to the current gear according to the historical target open-circuit voltage.

[0285] The sampler 201 is further used to: obtain the corrected measured open circuit voltage corresponding to the current gear position;

[0286] The processor 202 is further configured to determine the actual measured rectified open-circuit voltage corresponding to the current gear as the current actual measured open-circuit voltage after the rectification.

[0287] In this embodiment, it is determined whether the measured open-circuit voltage is close to the limit gear, and the gear is adjusted to the nearest measured gear. Since the highest gear and the lowest gear are calculated using fixed gear characterization parameters, there is no need to consider the charging and discharging direction. Experiments have shown that the parameters of the electrochromic device at the limit gear are fixed, which can reduce the calculation error caused by the direction, thereby improving the control accuracy.

[0288] For example, taking gear 5 as an example, assuming that the open circuit voltage corresponding to gear 5 is 0.5V, the open circuit voltage corresponding to gear 4 is 0.2V, the open circuit voltage corresponding to gear 3 is 0V, the open circuit voltage corresponding to gear 2 is -0.2V, and the open circuit voltage corresponding to gear 1 is -0.5V. Assuming that the current measured open circuit voltage is 0.3V and the historical target open circuit voltage is 0.4V, and their difference is 0.1V, which is greater than the preset value, then the current measured open circuit voltage needs to be corrected. Among them, the highest gear is 5, the highest gear open circuit voltage is 0.5V, the lowest gear is 1, and the lowest gear open circuit voltage is -0.5V, then 0.3V is compared with 0.5V to obtain a first difference of 0.2V. Comparing 0.3V and -0.5V, a second difference of 0.8V is obtained. If the first difference is less than the second difference, the electrochromic device is switched to the highest gear. Then, the electrochromic device is switched to the current gear according to the historical target voltage, and the measured open-circuit voltage corresponding to the current gear is obtained again, and the measured open-circuit voltage corresponding to the current gear is determined to be the current measured open-circuit voltage after correction.

[0289] In an improvement based on any of the above embodiments, the driver 203 is further configured to: apply a driving voltage to the electrochromic device, wherein the driving voltage is equal to the historical target open-circuit voltage; charge the electrochromic device according to the driving voltage; and when the charging time reaches a preset time, switch the electrochromic device to the current gear according to the historical target open-circuit voltage. In this embodiment, long-term charging is performed using a voltage greater than the target open-circuit voltage, and the electrochromic device can be adjusted to the historical gear as long as the time reaches a preset value.

[0290] The sampler 201 is further configured to obtain the actual open circuit voltage corresponding to the current gear position.

[0291] The processor 202 is further configured to determine that the measured open circuit voltage corresponding to the current gear position is the current measured open circuit voltage after deviation correction.

[0292] When it is determined that the current measured open-circuit voltage needs to be corrected, a driving voltage is applied to the electrochromic device, wherein the driving voltage is equal to the historical target open-circuit voltage. The electrochromic device is charged according to the driving voltage. When the charging time is greater than the preset time, the electrochromic device is switched to the current gear according to the historical target open-circuit voltage, and the measured open-circuit voltage corresponding to the current gear is obtained again, and the measured open-circuit voltage corresponding to the current gear is determined to be the current measured open-circuit voltage after correction. It should be noted that the preset time is a relatively large value, which keeps the device at the last target gear, and then uses the measured value of the current gear for calculation, thereby reducing the calculation error caused by device attenuation and improving the accuracy of control.

[0293] In some embodiments, the processor 202 is further configured to compare the currently measured open-circuit voltage with 0 V. The driver 203 is further configured to charge the electrochromic device to an open-circuit voltage equal to 0 V if the currently measured open-circuit voltage is less than 0 V, and switch the electrochromic device to a current gear position according to a historical target open-circuit voltage, and / or discharge the electrochromic device to an open-circuit voltage equal to 0 V if the currently measured open-circuit voltage is greater than 0 V, and switch the electrochromic device to a current gear position according to the historical target open-circuit voltage.

[0294] The sampler 201 is further configured to obtain the deviation-correcting open-circuit voltage corresponding to the current gear position.

[0295] The processor 202 is further configured to determine the actual measured rectified open-circuit voltage corresponding to the current gear as the current actual measured open-circuit voltage after the rectification.

[0296] When it is determined that the currently measured open circuit voltage needs to be rectified, the rectification is performed by determining whether the currently measured open circuit voltage is positive or negative.

[0297] Based on any of the above embodiments, improvements can be made to multiple electrochromic devices. The number of control devices can be set to correspond to each electrochromic device, or one control device can be used to control multiple electrochromic devices. The control of each electrochromic device is the same as that of any of the above control devices, and will not be described in detail here. The control device assigns each electrochromic device unique charge and discharge parameters based on the charging direction of each electrochromic device. When the electrochromic devices are adjusted to the same gear, the transmittance of each electrochromic device is consistent, whether charging or discharging, thereby reducing user visual errors and improving the user experience.

[0298] An improvement is made based on the above implementation. The difference from the above embodiment is that the driver is also used to: if the currently measured open-circuit voltage is less than 0V, charge the electrochromic device to an open-circuit voltage equal to 0V, and switch the electrochromic device to the current gear according to the historical target open-circuit voltage, and / or, if the currently measured open-circuit voltage is greater than 0V, discharge the electrochromic device to an open-circuit voltage equal to 0V, and switch the electrochromic device to the target gear according to the target open-circuit voltage.

[0299] The present application also provides a shift control system for an electrochromic device, as shown in FIG3 , which may include a terminal platform 300 and the aforementioned shift control device 200 . Information is exchanged between the terminal platform 300 and the shift control device 200 .

[0300] There is no particular limitation on the type of the terminal platform 300 . In some embodiments, the terminal platform 300 may include a remote controller, a mobile terminal device, or a central control system in a vehicle.

[0301] In some embodiments, the terminal platform 300 can exchange information with the receiver in the shift control device 200. For example, the terminal platform 300 can send a shift instruction, and the receiver can receive the shift instruction. In other embodiments, the terminal platform 300 can also exchange information with the transmitter in the shift control device 200. For example, the transmitter can send a shift completion signal, and the terminal platform 300 can receive the shift completion signal. Therefore, through the information exchange between the terminal platform 300 and the shift control device 200, the terminal platform 300 can realize the regulation of the shift control device 200, etc.

[0302] 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 schematic. For example, the division of the devices is merely a logical function division. In actual implementation, they can be fully or partially integrated into one physical entity, or they can be 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 interfaces, devices or components, or it can be electrical or other forms.

[0303] The above description of the shift control device and system for the electrochromic device provided in the embodiments of the present application is described in detail in conjunction with Figures 1, 2, 3, and 4. The shift control method provided in the embodiments of the present application is described in detail below in conjunction with Figures 5 to 8. The corresponding method 500 shown in Figures 5 to 8 can be executed in an apparatus 200 such as that shown in Figure 2. It should be understood that the description of the embodiment of the shift control method corresponds to the description of the embodiment of the apparatus. Therefore, for matters not described in detail, please refer to the embodiment of the apparatus above, and for the sake of brevity, they will not be repeated here.

[0304] An embodiment of the present application provides a shift control method for an electrochromic device. As shown in FIG5 , the shift control method 500 may include: S501, obtaining a target gear and a current gear. S502, determining whether the target gear is the lowest gear or the highest gear. S503, if not, determining the charge and discharge direction according to the target gear and the current gear, and determining the first charge and discharge adjustment parameter required for shifting according to the charge and discharge direction, the target gear, and the current gear. S506, switching the electrochromic device to the target gear according to the first charge and discharge adjustment parameter.

[0305] In this embodiment, fixed-parameter shifting is used when the target gear is the lowest or highest gear. When the target gear is an intermediate gear, charging or discharging is performed based on the gear position-open-circuit voltage function. This ensures that the extreme gear positions of the electrochromic device meet the user's consistency requirements.

[0306] When the target gear is the lowest gear or the highest gear, the electrochromic device has only a charging direction or a discharging direction. For example, when the target gear is the highest gear, it has only a charging direction, and when the target gear is the lowest gear, it has only a discharging direction. Whether the highest gear corresponds to the charging or discharging direction is related to the specific electrochromic material. And the open circuit voltage corresponding to the highest gear and the lowest gear of the device is a fixed value. Charging and discharging with a fixed value is convenient for control. For the intermediate gears, charging and discharging are performed according to the functional relationship between the gear and the open circuit voltage. Therefore, in this embodiment, when the target gear is the lowest gear or the highest gear, the second charge and discharge adjustment parameter required for shifting is determined based on the fixed characterization parameter corresponding to the target gear and the current gear characterization parameter corresponding to the current gear, so that the corresponding transmittance when charging or discharging to the same gear is closer, thereby improving the user experience.

[0307] The embodiment of the present application proposes an improved or replacement solution based on the above, and provides a shift control method for an electrochromic device. The shift control method 500 may include: S501, obtaining the target gear and the current gear. S502, judging whether the target gear is the lowest gear or the highest gear. S504, if so, obtaining the current gear characterization parameter corresponding to the current gear, and obtaining the fixed gear characterization parameter corresponding to the target gear. S505, determining the second charge and discharge adjustment parameter required for shifting according to the fixed gear characterization parameter and the current gear characterization parameter. S506, switching the electrochromic device to the target gear according to the second charge and discharge adjustment parameter.

[0308] In an embodiment of the present application, when the target gear is not the lowest gear or the highest gear, charging or discharging is performed based on the gear-open-circuit voltage function, and the charging adjustment parameters required for shifting are determined according to the charging direction, and the discharge adjustment parameters required for shifting are determined according to the discharging direction. This avoids the situation in the prior art where the same adjustment parameters are used for shifting regardless of charging or discharging, resulting in a large difference in transmittance corresponding to switching to the same gear, and makes the transmittance corresponding to charging or discharging to the same gear closer.

[0309] When the target gear is not the lowest gear or the highest gear, the charge and discharge direction is first determined based on the target gear and the current gear. Then, the first charge and discharge adjustment parameter required for the gear shift is determined based on the charge and discharge direction, the target gear, and the current gear. This application determines the charge and discharge direction of the electrochromic device and provides the charge adjustment parameter corresponding to the charge direction or the discharge adjustment parameter corresponding to the discharge direction. This makes the transmittance corresponding to the gear more accurate and the transmittance corresponding to the same gear closer when charging or discharging, thereby improving the user experience.

[0310] The key point of this application is that when the target gear is not the lowest gear or the highest gear, the charging adjustment parameters required for shifting are determined according to the charging direction, and the discharge adjustment parameters required for shifting are determined according to the discharging direction. This avoids the problem in the prior art that the same adjustment parameters are used for shifting regardless of charging or discharging, and the transmittance corresponding to switching to the same gear is quite different, resulting in inaccurate transmittance adjustment of the electrochromic device.

[0311] Based on any of the above embodiments, the gear shift control method 500 may further include: receiving a gear shift instruction, where the gear shift instruction carries parameters of the target gear.

[0312] Based on any of the above embodiments, the gear shift control method 500 may further include: sending a gear shift completion signal.

[0313] Based on any of the above embodiments, the first charge and discharge adjustment parameter includes at least one of open circuit voltage and power;

[0314] The current gear position characterization parameter includes at least one of open circuit voltage and power;

[0315] The fixed gear characterization parameter includes at least one of open circuit voltage and power;

[0316] The second charge and discharge adjustment parameter includes at least one of open circuit voltage and power.

[0317] When performing a gear shift operation on an electrochromic device, when the target gear is not the lowest gear or the highest gear, the first open-circuit voltage difference required for the gear shift can be determined based on the charge and discharge direction, the target gear and the current gear; the first charge difference required for the gear shift can also be determined based on the charge and discharge direction, the target gear and the current gear; the first open-circuit voltage difference required for the gear shift can also be determined based on the charge and discharge direction, the target gear and the current gear, and then the first charge difference required for the gear shift can be determined based on the functional relationship between the open-circuit voltage difference and the charge-open-circuit voltage.

[0318] And / or, when the target gear is the lowest gear or the highest gear, the second open-circuit voltage difference required for shifting can be determined based on the current gear open-circuit voltage corresponding to the current gear and the fixed gear open-circuit voltage corresponding to the target gear; the second electric quantity difference required for shifting can also be determined based on the current gear electric quantity corresponding to the current gear and the fixed gear electric quantity corresponding to the target gear; the second open-circuit voltage difference required for shifting can also be determined based on the current gear open-circuit voltage corresponding to the current gear and the fixed gear open-circuit voltage corresponding to the target gear, and then the second electric quantity difference required for shifting can be determined based on the functional relationship between the open-circuit voltage difference and the electric quantity-open-circuit voltage.

[0319] FIG6 shows an exemplary flow chart of step S503 in FIG5 . It is understandable that step S503 may or may not include the schematic flow shown in FIG6 . In other words, illustratively, when executing the relevant flow according to method 500 , step S503 may be executed directly, or may be executed according to some or all of the steps shown in FIG6 .

[0320] Based on any of the above embodiments, as shown in FIG6 , step S503 may include: S5031, comparing the gear value of the current gear and the gear value of the target gear. S5032, if the gear value of the target gear is greater than the gear value of the current gear, determining that the charge-discharge direction is the charge direction. S5033, if the target gear is less than the current gear, determining that the charge-discharge direction is the discharge direction.

[0321] For example, assuming the target gear is 3 and the current gear is 1, and the target gear is greater than the current gear, the charge and discharge direction can be determined to be the charging direction based on the curve relationship shown in Figure 1. Assuming the target gear is 2 and the current gear is 5, and the target gear is less than the current gear, the charge and discharge direction can be determined to be the discharging direction based on the curve relationship shown in Figure 1. It is worth noting that the specific method for determining charge and discharge varies depending on the material of the electrochromic device.

[0322] FIG7 shows an exemplary flow chart of step S503 in FIG5 . It is understandable that step S503 may or may not include the schematic flow shown in FIG7 . In other words, illustratively, when executing the relevant flow according to method 500 , step S503 may be executed directly, or may be executed according to some or all of the steps shown in FIG7 .

[0323] Based on any of the above embodiments, as shown in FIG7 , step S503 may include: S5034, obtaining a current open-circuit voltage corresponding to the current gear; S5035, obtaining a target open-circuit voltage corresponding to the target gear based on the charge and discharge direction; and S5036, determining a first open-circuit voltage difference required for shifting based on the current open-circuit voltage and the target open-circuit voltage.

[0324] Based on any of the above embodiments, improvements are made. In step S5034, the current open circuit voltage of the electrochromic device is obtained as the current measured open circuit voltage. When the current measured open circuit voltage meets the preset conditions, the current measured open circuit voltage is directly used for subsequent calculations. When the current measured open circuit voltage does not meet the preset conditions, the current measured open circuit voltage needs to be corrected.

[0325] Based on any of the above embodiments, improvements are made. In step S5035, when obtaining the target open-circuit voltage, the charge and discharge direction must be determined first. When the charge and discharge direction is the charging direction, the target open-circuit voltage corresponding to the target gear is determined by using the functional relationship between the open-circuit voltage of the electrochromic device in the charging direction and the gear; when the charge and discharge direction is the discharging direction, the open-circuit voltage corresponding to the target gear is determined by using the functional relationship between the open-circuit voltage of the electrochromic device in the discharging direction and the gear.

[0326] In some embodiments, in step S5306 , a difference operation is performed on the current open circuit voltage and the target open circuit voltage, and an absolute value operation is taken to obtain a first open circuit voltage difference.

[0327] Exemplarily, assuming that the first open circuit voltage difference is represented by ΔOCV1, the current open circuit voltage is V1, and the target open circuit voltage is V2, then ΔOCV1=|V1-V2〡.

[0328] FIG8 shows an exemplary flow chart of step S503 in FIG5 . It is understandable that step S503 may include or exclude the schematic flow shown in FIG8 . In other words, illustratively, when executing the relevant flow according to method 500 , step S503 may be executed directly, or may be executed according to some or all of the steps shown in FIG8 .

[0329] Based on any of the above embodiments, step S503 may include: S5037, obtaining a current power level corresponding to the current gear; S5038, obtaining a target power level corresponding to the target gear based on the charge and discharge direction; and S5039, determining a first power level difference required for shifting gears based on the current power level and the target power level.

[0330] Based on any of the above embodiments, in step S5038, when obtaining the target power corresponding to the target gear position, the charge and discharge direction must be determined to make the transmittance adjustment more accurate.

[0331] In some embodiments, in step S5039, the current power level is subtracted from the target power level, and the absolute value is taken to obtain a first power difference. By calculating the required charge or discharge level Q, Q can be used as a cutoff condition during the shift control process. That is, when the charge or discharge level reaches Q, charging or discharging of the electrochromic device is stopped.

[0332] Exemplarily, assuming that the first power difference is represented by ΔQ1, the current power is Q1, and the target power is Q2, then ΔQ1=|Q1-Q2〡.

[0333] Based on any of the above embodiments, further improvement, step S5037 may specifically include: obtaining the current open circuit voltage corresponding to the current gear, obtaining a preset relationship according to the charge and discharge direction, wherein the preset relationship includes a functional relationship of charging power-open circuit voltage and a functional relationship of discharging power-open circuit voltage, and determining the current power according to the current open circuit voltage and the preset relationship.

[0334] Based on any of the above embodiments, further improvements are made. In step S5037, the current open circuit voltage obtained is the current measured open circuit voltage. When the current measured open circuit voltage meets the preset conditions, the current measured open circuit voltage is directly used for subsequent calculations. When the current measured open circuit voltage does not meet the preset conditions, the current measured open circuit voltage needs to be corrected.

[0335] Since the switching between the two gears is also related to the charging and discharging direction, two functional relationships need to be set for the charging and discharging of the electrochromic device, namely the functional relationship of charging power-open circuit voltage and the functional relationship of discharging power-open circuit voltage, that is, the preset relationship. These two functional relationships are obtained by optimizing the linear function of power and open circuit voltage, respectively. Among them, the linear function of power and open circuit voltage is expressed as Q=k*OCV+B, where Q represents power, k represents slope, B represents intercept, and OCV represents open circuit voltage. By calculating the need to charge or release Q, Q can be used as the cut-off condition in the process of controlling the gear shift. That is, when the amount of power charged or released reaches Q, the charging or discharging of the electrochromic device is stopped.

[0336] When the charge / discharge direction is charging, the preset relationship is the function relationship of charge capacity - open circuit voltage: Qc = A1*OCV5 + B1*OCV4 + C1*OCV3 + D1*OCV2 + E1*OCV + F1. When the charge / discharge direction is discharging, the preset relationship is the function relationship of discharge capacity - open circuit voltage: Qf = A2*OCV5 + B2*OCV4 + C2*OCV3 + D2*OCV2 + E2*OCV + F2.

[0337] When the charge and discharge direction is the charging direction, the preset relationship is the function relationship of charging capacity-open circuit voltage. The current open circuit voltage and the function relationship of charging capacity-open circuit voltage are used to calculate the current capacity: Qc=A1*OCV5+B1*OCV4+C1*OCV3+D1*OCV2+E1*OCV+F1.

[0338] When the charge and discharge direction is the discharge direction, the preset relationship is the function relationship of discharge capacity-open circuit voltage. The current capacity is calculated using the current open circuit voltage and the function relationship of discharge capacity-open circuit voltage: Qf=A2*OCV5+B2*OCV4+C2*OCV3+D2*OCV2+E2*OCV+F2.

[0339] Based on any of the above embodiments, as a further improvement, step S5038 may include: obtaining a target open-circuit voltage corresponding to the target gear position according to the charge and discharge direction, obtaining a preset relationship according to the charge and discharge direction, wherein the preset relationship includes a functional relationship of charging power-open-circuit voltage and a functional relationship of discharging power-open-circuit voltage, and determining the target power according to the target open-circuit voltage and the preset relationship.

[0340] In step S5038, when obtaining the target open-circuit voltage, the charge and discharge direction must be determined. When the charge and discharge direction is the charging direction, the target open-circuit voltage corresponding to the target gear is determined by using the functional relationship between the open-circuit voltage and gear of the electrochromic device in the charging direction, and the functional relationship between the charging power and the open-circuit voltage is obtained at the same time; when the charge and discharge direction is the discharging direction, the open-circuit voltage corresponding to the target gear is determined by using the functional relationship between the open-circuit voltage and gear of the electrochromic device in the discharging direction, and the functional relationship between the discharging power and the open-circuit voltage is obtained at the same time.

[0341] When the charge and discharge direction is the charging direction, the preset relationship is the functional relationship of the charging capacity-open circuit voltage. The target capacity is calculated according to the functional relationship between the target open circuit voltage and the charging capacity-open circuit voltage: Qc=A1*OCV5+B1*OCV4+C1*OCV3+D1*OCV2+E1*OCV+F1, where the target open circuit voltage is determined according to the functional relationship between the open circuit voltage and the gear in the charging direction.

[0342] When the charge and discharge direction is the discharge direction, the preset relationship is the functional relationship of the discharge capacity-open circuit voltage. The target capacity is calculated according to the target open circuit voltage and the functional relationship of the discharge capacity-open circuit voltage: Qf=A2*OCV5+B2*OCV4+C2*OCV3+D2*OCV2+E2*OCV+F2, where the target open circuit voltage is determined according to the functional relationship of the open circuit voltage-gear in the discharge direction.

[0343] In some embodiments, current and time can be used as protection conditions during the electrochromic device's shifting operation to prevent overcharging or over-discharging. The time range is 100 to 500 seconds, and the current range is 20 to 200 mA. The current and time settings vary depending on the size of the electrochromic device.

[0344] In some embodiments, if the electrochromic device switches to different gears at different temperatures, the operating voltage used by the electrochromic device will also be different. At this time, it is necessary to retest the functional relationship between charge / discharge capacity and open circuit voltage and set the control logic for different temperature zones.

[0345] When there are fewer temperature zones, the characteristic temperature is selected through testing, and the functional relationship between charge / discharge capacity and open circuit voltage is set within the characteristic temperature range; when there are more temperature zones, the relationship between different temperature intervals can be found, and the temperature can also be used as a variable to fit the functional relationship between charge / discharge capacity and open circuit voltage.

[0346] Based on any of the above embodiments, an improvement is made. After determining the first open circuit voltage difference required for shifting gears based on the current open circuit voltage and the target open circuit voltage, the processor is further used to: confirm a preset relationship corresponding to the charging or discharging direction, and determine the amount of electricity to be charged based on the first open circuit voltage difference and the preset relationship corresponding to charging; or determine the amount of electricity to be released based on the first open circuit voltage difference and the preset relationship corresponding to discharging.

[0347] Based on any of the above embodiments, improvements can be made, and step S5034 or step S5037 may include: obtaining the current measured open-circuit voltage of the electrochromic device, and obtaining the historical target open-circuit voltage corresponding to the last switch to the current gear, comparing the current measured open-circuit voltage with the historical target open-circuit voltage, if the difference between the current measured open-circuit voltage and the historical target open-circuit voltage is greater than a preset value, correcting the current measured open-circuit voltage to obtain the current measured open-circuit voltage after correction, and determining that the current measured open-circuit voltage after correction is the current open-circuit voltage corresponding to the current gear.

[0348] In the embodiment of the present application, the preset value is between 0.05V and 0.2V.

[0349] In some embodiments, in step S5034 or step S5027, due to the material characteristics of the electrochromic device, when the material is stored for a long time, it will degrade, that is, power off. Power off means that the electrochromic device decays to 0V, and the current measured open-circuit voltage will not be equal to the historical target open-circuit voltage. In order to ensure the adjustment accuracy of the transmittance, when this happens, it will be determined whether the difference between them is greater than the preset value. If it is less than the preset value, there is no need to correct the current measured open-circuit voltage, and the current measured open-circuit voltage is determined to be the current open-circuit voltage corresponding to the current gear. If it is greater than the preset value, it is necessary to correct the current measured open-circuit voltage, and determine that the current measured open-circuit voltage after correction is the current open-circuit voltage corresponding to the current gear, so as to ensure that the electrochromic device is shifted to the precise transmittance range.

[0350] In some embodiments, step S5034 or step S5037 may further include: obtaining a highest-gear open-circuit voltage corresponding to the highest gear and a lowest-gear open-circuit voltage corresponding to the lowest gear, comparing the currently measured open-circuit voltage with the highest-gear open-circuit voltage to obtain a first difference, comparing the currently measured open-circuit voltage with the lowest-gear open-circuit voltage to obtain a second difference, comparing the first difference and the second difference, and if the first difference is less than the second difference, switching the electrochromic device to the highest gear, and / or, if the first difference is greater than the second difference, switching the electrochromic device to the lowest gear. Taking 5 gears as an example, assuming that the open-circuit voltage corresponding to 5 gear is 0.5V, the open-circuit voltage corresponding to 4 gear is 0.2V, the open-circuit voltage corresponding to 3 gear is 0V, the open-circuit voltage corresponding to 2 gear is -0.2V, and the open-circuit voltage corresponding to 1 gear is -0.5V. Assuming the current measured open-circuit voltage is 0.3V and the historical target open-circuit voltage is 0.4V, and their difference of 0.1V is greater than the preset value, the current measured open-circuit voltage needs to be corrected. The highest gear is 5, the highest gear open-circuit voltage is 0.5V, and the lowest gear is 1, the lowest gear open-circuit voltage is -0.5V. Comparing 0.3V and 0.5V yields a first difference of 0.2V. Comparing 0.3V and -0.5V yields a second difference of 0.8V. If the first difference is less than the second difference, the electrochromic device is switched to the highest gear.

[0351] In some embodiments, after the driver switches to the lowest or highest gear, it switches the electrochromic device from the highest or lowest gear to the target gear. Because the gear parameters of the lowest or highest gear are fixed, when the lowest or highest gear is used as the starting gear, only the discharge direction or the charge direction exists. Therefore, only the parameters of the target gear corresponding to the charge direction or the discharge direction need to be considered, thereby improving the control accuracy of the electrochromic device and simplifying the overall control logic.

[0352] An improvement is made based on any of the above embodiments, and the difference from the above embodiments is that after the driver switches to the lowest gear or the highest gear, the method also includes: switching the electrochromic device from the highest gear or the lowest gear to the current gear according to the historical target open-circuit voltage, obtaining the measured correction open-circuit voltage corresponding to the current gear, and determining that the measured correction open-circuit voltage corresponding to the current gear is the current measured open-circuit voltage after correction.

[0353] In this embodiment, it is determined whether the measured open-circuit voltage is close to the limit gear, and the gear is adjusted to the nearest measured gear. Since the highest gear and the lowest gear are calculated using fixed gear characterization parameters, there is no need to consider the charging and discharging direction. Experiments have shown that the parameters of the electrochromic device at the limit gear are fixed, which can reduce the calculation error caused by the direction, thereby improving the control accuracy.

[0354] Based on any of the above embodiments, step S5034 or step S5037 may further include: applying a driving voltage to the electrochromic device, wherein the driving voltage is equal to the historical target open-circuit voltage, charging the electrochromic device according to the driving voltage, and when the charging time reaches a preset time, switching the electrochromic device to the current gear according to the historical target open-circuit voltage, obtaining the measured open-circuit voltage corresponding to the current gear, and determining that the measured open-circuit voltage corresponding to the current gear is the current measured open-circuit voltage after correction. In this embodiment, long-term charging is performed in a manner greater than the target open-circuit voltage, and as long as the time reaches a preset value, the electrochromic device can be adjusted to the historical gear.

[0355] Based on any of the above embodiments, improvements are made. In step S5034 or step S5037, when it is determined that the current measured open-circuit voltage needs to be corrected, a driving voltage is applied to the electrochromic device, wherein the driving voltage is equal to the historical target open-circuit voltage. The electrochromic device is charged according to the driving voltage. When the charging time is greater than the preset time, the electrochromic device is switched to the current gear according to the historical target open-circuit voltage, and the measured open-circuit voltage corresponding to the current gear is obtained again, and the measured open-circuit voltage corresponding to the current gear is determined to be the current measured open-circuit voltage after correction. It should be noted that the preset time is a relatively large value, which keeps the device at the last target gear, and then uses the measured value of the current gear for calculation, thereby reducing the calculation error caused by device attenuation, thereby improving the accuracy of control.

[0356] Based on any of the above embodiments, improvements may be made, and step S5034 or step S5037 may further include: comparing the current measured open-circuit voltage with 0V, and if the current measured open-circuit voltage is less than 0V, charging the electrochromic device to an open-circuit voltage equal to 0V, and switching the electrochromic device to the current gear according to the historical target open-circuit voltage, and / or, if the current measured open-circuit voltage is greater than 0V, discharging the electrochromic device to an open-circuit voltage equal to 0V, and switching the electrochromic device to the current gear according to the historical target open-circuit voltage, obtaining the measured correction open-circuit voltage corresponding to the current gear, and determining that the measured open-circuit voltage corresponding to the current gear is the current measured correction open-circuit voltage after correction.

[0357] An improvement is made based on the above embodiment, and the difference from the above embodiment is that: the currently measured open-circuit voltage is compared with 0V; if the currently measured open-circuit voltage is less than 0V, the electrochromic device is charged to an open-circuit voltage equal to 0V, and the electrochromic device is switched to the current gear according to the historical target open-circuit voltage; and / or, if the currently measured open-circuit voltage is greater than 0V, the electrochromic device is discharged to an open-circuit voltage equal to 0V, and the electrochromic device is switched to the target gear according to the target open-circuit voltage.

[0358] In some embodiments, in step S5034 or step S5037, when it is determined that the currently measured open-circuit voltage needs to be rectified, the rectification is performed by determining whether the currently measured open-circuit voltage is positive or negative.

[0359] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0360] The present application also provides a method for controlling multiple electrochromic devices. The method for controlling each electrochromic device is consistent with the above-described method, and the parameters obtained are consistent, so they will not be described in detail here. By assigning each electrochromic device unique charge and discharge parameters based on its charging direction, when each electrochromic device is adjusted to the same gear, the transmittance of each electrochromic device is consistent, whether charging or discharging, thereby reducing user visual errors and improving the user experience.

[0361] Figure 9 shows a schematic block diagram of a computer-readable storage medium and an arithmetic unit according to an embodiment of the present application. As shown in Figure 9 , the present application also provides a computer-readable storage medium 901 storing a computer program that, when executed on an arithmetic unit 902, executes the shift control method for an electrochromic device according to the above-described embodiments, such as method 500. It should be understood that the description of the shift control method embodiment corresponds to the description of the device embodiment. Therefore, for matters not described in detail, reference can be made to the device embodiment above and, for the sake of brevity, will not be repeated here.

[0362] In the embodiments of the present application, there is no particular limitation on the type of computer-readable storage medium 901. In some embodiments, the computer-readable storage medium 901 may include any medium capable of storing program code, such as a USB flash drive, a mobile hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0363] In the embodiment of the present application, the computer program includes computer program code, which may be in source code form, object code form, executable file, or some intermediate form.

[0364] In the embodiment of the present application, there is no particular limitation on the type of the computing unit 902. In some embodiments, the computing unit 902 may include a controller, a mobile phone, a computer, or other smart devices.

[0365] 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.

[0366] 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 shift control method for an electrochromic device, characterized in that: include: Get the target gear and current gear; Determine whether the target gear is the lowest gear or the highest gear; if not, determine the charge and discharge direction according to the target gear and the current gear, and determine the first charge and discharge adjustment parameter required for gear shifting according to the charge and discharge direction, the target gear and the current gear; and / or, if yes, obtain the current gear characterization parameter corresponding to the current gear, obtain the fixed gear characterization parameter corresponding to the target gear; determine the second charge and discharge adjustment parameter required for gear shifting according to the fixed gear characterization parameter and the current gear characterization parameter; The electrochromic device is switched to the target gear position according to the first charge and discharge adjustment parameter or the second charge and discharge adjustment parameter.

2. The shift control method of the electrochromic device according to claim 1, characterized in that: The first charge and discharge adjustment parameter includes at least one of an open circuit voltage and a charge; The current gear characterization parameter includes at least one of an open circuit voltage and a power quantity; The fixed gear characterization parameter includes at least one of an open circuit voltage and a quantity of electricity; The second charge and discharge adjustment parameter includes at least one of an open circuit voltage and a charge.

3. The shift control method of the electrochromic device according to claim 1 or 2, characterized in that: If not, determining the charge and discharge direction according to the target gear position and the current gear position, including: comparing the gear value of the current gear with the gear value of the target gear, If the gear value of the target gear is greater than the gear value of the current gear, then the charging and discharging direction is determined to be a charging direction, If the gear value of the target gear is smaller than the gear value of the current gear, the charge-discharge direction is determined to be a discharge direction.

4. The shift control method of the electrochromic device according to claim 2, characterized in that: The determining of the first charge-discharge adjustment parameter required for shifting according to the charge-discharge direction, the target gear position and the current gear position includes: Obtain the current open circuit voltage corresponding to the current gear position, Acquire a target open circuit voltage corresponding to the target gear position according to the charge and discharge direction; A first open circuit voltage difference required for shifting is determined according to the current open circuit voltage and the target open circuit voltage.

5. The shift control method of the electrochromic device according to claim 2, characterized in that: The determining of the first charge-discharge adjustment parameter required for shifting according to the charge-discharge direction, the target gear position and the current gear position includes: Get the current power corresponding to the current gear position, Acquire a target power corresponding to the target gear position according to the charge and discharge direction; A first power difference required for shifting is determined according to the current power and the target power.

6. The shift control method of the electrochromic device according to claim 5, characterized in that: The obtaining of the current power corresponding to the current gear position includes: Obtain the current open circuit voltage corresponding to the current gear position, Acquire a preset relationship according to the charge and discharge direction, wherein the preset relationship includes a functional relationship of charge power-open circuit voltage and a functional relationship of discharge power-open circuit voltage; The current power quantity is determined according to the current open circuit voltage and the preset relationship.

7. The shift control method of the electrochromic device according to claim 5, characterized in that: The acquiring the target power corresponding to the target gear position according to the charging and discharging direction includes: According to the charge and discharge direction, a target open circuit voltage corresponding to the target gear position is obtained, Acquire a preset relationship according to the charge and discharge direction, wherein the preset relationship includes a functional relationship of charge power-open circuit voltage and a functional relationship of discharge power-open circuit voltage; The target power is determined according to the target open circuit voltage and the preset relationship.

8. The shift control method of the electrochromic device according to claim 4 or 6, characterized in that: The obtaining of the current open circuit voltage corresponding to the current gear position includes: Obtaining a currently measured open circuit voltage of the electrochromic device, and obtaining a historical target open circuit voltage corresponding to the last switch to the current gear position; comparing the currently measured open circuit voltage with the historical target open circuit voltage, If the difference between the current measured open circuit voltage and the historical target open circuit voltage is greater than a preset value, the current measured open circuit voltage Performing deviation correction to obtain the currently measured open circuit voltage after deviation correction, The currently measured open circuit voltage after correction is determined to be the current open circuit voltage corresponding to the current gear position.

9. The shift control method of the electrochromic device according to claim 8, characterized in that: If the difference between the current measured open circuit voltage and the historical target open circuit voltage is greater than a preset value, the current measured open circuit voltage is corrected to obtain the corrected current measured open circuit voltage, including: applying a driving voltage to the electrochromic device, wherein the driving voltage is equal to the historical target open circuit voltage, charging the electrochromic device according to the driving voltage, and when the charging time reaches a preset time, switching the electrochromic device to the current gear according to the historical target open-circuit voltage; Obtaining the actual measured deviation correction open circuit voltage corresponding to the current gear position; Determine the actually measured rectified open-circuit voltage corresponding to the current gear position as the currently measured open-circuit voltage after the rectification.

10. The shift control method of the electrochromic device according to claim 4 or 6, characterized in that: The obtaining of the current open circuit voltage corresponding to the current gear position includes: Obtaining a currently measured open circuit voltage of the electrochromic device, and obtaining a historical target open circuit voltage corresponding to the last switch to the current gear position; comparing the currently measured open circuit voltage with the historical target open circuit voltage, If the difference between the currently measured open circuit voltage and the historical target open circuit voltage is greater than a preset value; the method further includes: Obtain the highest gear open circuit voltage corresponding to the highest gear and the lowest gear open circuit voltage corresponding to the lowest gear; Compare the currently measured open-circuit voltage with the highest-level open-circuit voltage to obtain a first difference, The currently measured open circuit voltage is compared with the lowest gear open circuit voltage to obtain a second difference, comparing the first difference value and the second difference value, If the first difference is less than the second difference, the electrochromic device is switched to the highest gear, and / or if the first difference is greater than the second difference, the electrochromic device is switched to the lowest gear, The electrochromic device is switched from the highest gear or the lowest gear to the target gear according to the target open circuit voltage.

11. The shift control method of the electrochromic device according to claim 8, characterized in that: The obtaining of the current open circuit voltage corresponding to the current gear position includes: Obtaining a currently measured open circuit voltage of the electrochromic device, and obtaining a historical target open circuit voltage corresponding to the last switch to the current gear position; comparing the currently measured open circuit voltage with the historical target open circuit voltage, If the difference between the currently measured open circuit voltage and the historical target open circuit voltage is greater than a preset value; the method further includes: Comparing the currently measured open circuit voltage with 0V; If the currently measured open-circuit voltage is less than 0V, the electrochromic device is charged to an open-circuit voltage equal to 0V, and the electrochromic device is switched to the current gear according to the historical target open-circuit voltage; and / or, if the currently measured open-circuit voltage is greater than 0V, the electrochromic device is discharged to an open-circuit voltage equal to 0V, and the electrochromic device is switched to the target gear according to the target open-circuit voltage.

12. A shift control device for an electrochromic device, characterized in that: include: A sampler, used to obtain the target gear position and the current gear position; a processor, configured to determine whether the target gear is the lowest gear or the highest gear, and if not, determine the charge and discharge direction according to the target gear and the current gear, and determine the first charge and discharge adjustment parameter required for gear shifting according to the charge and discharge direction, the target gear and the current gear; and / or, if yes, the sampler is further configured to obtain the current gear characterization parameter corresponding to the current gear, and obtain the fixed gear characterization parameter corresponding to the target gear; the processor is further configured to determine the second charge and discharge adjustment parameter required for gear shifting according to the fixed gear characterization parameter and the current gear characterization parameter; A driver is used to switch the electrochromic device to the target gear position according to the first charge and discharge adjustment parameter or the second charge and discharge adjustment parameter.

13. The shift control device of the electrochromic device according to claim 12, characterized in that: The first charge and discharge adjustment parameter includes at least one of an open circuit voltage and a charge; The current gear characterization parameter includes at least one of an open circuit voltage and a power quantity; The fixed gear characterization parameter includes at least one of an open circuit voltage and a quantity of electricity; The second charge and discharge adjustment parameter includes at least one of an open circuit voltage and a charge.

14. The shift control device of the electrochromic device according to claim 12 or 13, characterized in that: The processor is further configured to: comparing the gear value of the current gear with the gear value of the target gear, If the gear value of the target gear is greater than the gear value of the current gear, then the charging and discharging direction is determined to be a charging direction, If the gear value of the target gear is smaller than the gear value of the current gear, the charge-discharge direction is determined to be a discharge direction.

15. The shift control device of the electrochromic device according to claim 13, characterized in that: The sampler is also used to: Obtain the current open circuit voltage corresponding to the current gear position, Acquire a target open circuit voltage corresponding to the target gear position according to the charge and discharge direction; The processor is further configured to: A first open circuit voltage difference required for shifting is determined according to the current open circuit voltage and the target open circuit voltage.

16. The shift control device of the electrochromic device according to claim 13, characterized in that: The sampler is also used to: Get the current power corresponding to the current gear position, Acquire a target power corresponding to the target gear position according to the charge and discharge direction; The processor is further configured to: A first power difference required for shifting is determined according to the current power and the target power.

17. The shift control device of the electrochromic device according to claim 16, characterized in that: The sampler is used to: Obtain the current open circuit voltage corresponding to the current gear position, Acquire a preset relationship according to the charge and discharge direction; wherein the preset relationship includes a functional relationship of charge power-open circuit voltage and a functional relationship of discharge power-open circuit voltage; The processor is further configured to: The current power quantity is determined according to the current open circuit voltage and the preset relationship.

18. The shift control device of the electrochromic device according to claim 16, characterized in that: The sampler is also used to: According to the charge and discharge direction, a target open circuit voltage corresponding to the target gear position is obtained, Acquire a preset relationship according to the charge and discharge direction; wherein the preset relationship includes a functional relationship of charge power-open circuit voltage and a functional relationship of discharge power-open circuit voltage; The processor is further configured to: The target power is determined according to the target open circuit voltage and the preset relationship.

19. The shift control device of the electrochromic device according to claim 15 or 17, characterized in that: The sampler is also used to: Obtaining a currently measured open circuit voltage of the electrochromic device, and obtaining a historical target open circuit voltage corresponding to the last switch to the current gear position; The processor is further configured to: comparing the currently measured open circuit voltage with the historical target open circuit voltage, If the difference between the currently measured open circuit voltage and the historical target open circuit voltage is greater than a preset value, the currently measured open circuit voltage is rectified to obtain the rectified currently measured open circuit voltage. The currently measured open circuit voltage after correction is determined to be the current open circuit voltage corresponding to the current gear position.

20. The shift control device of the electrochromic device according to claim 19, characterized in that: The driver is also used to: applying a driving voltage to the electrochromic device, wherein the driving voltage is equal to the historical target open circuit voltage, charging the electrochromic device according to the driving voltage, and when the charging time reaches a preset time, switching the electrochromic device to the current gear according to the historical target open-circuit voltage; The sampler is also used to: Obtaining the actual measured deviation correction open circuit voltage corresponding to the current gear position; The processor is further used to determine that the actually measured rectified open-circuit voltage corresponding to the current gear position is the currently measured open-circuit voltage after rectification.

21. The shift control device of the electrochromic device according to claim 15 or 17, characterized in that: The sampler is also used to: obtain the currently measured open circuit voltage of the electrochromic device, and obtain the historical target open circuit voltage corresponding to the last switch to the current gear position; The processor is further configured to: compare the currently measured open circuit voltage with the historical target open circuit voltage, if the difference between the currently measured open circuit voltage and the historical target open circuit voltage is greater than a preset value; The sampler is also used to: obtain the highest gear open circuit voltage corresponding to the highest gear and the lowest gear open circuit voltage corresponding to the lowest gear; The processor is further configured to: compare the currently measured open circuit voltage with the highest gear open circuit voltage to obtain a first difference, compare the currently measured open circuit voltage with the lowest gear open circuit voltage to obtain a second difference, and compare the first difference with the second difference; The driver is further configured to: switch the electrochromic device to the highest gear if the first difference is less than the second difference, and / or switch the electrochromic device to the lowest gear if the first difference is greater than the second difference. The electrochromic device is switched from the highest gear or the lowest gear to the target gear according to the target open circuit voltage.

22. The shift control device of the electrochromic device according to claim 19, characterized in that: The sampler is also used to: obtain the current measured open circuit voltage of the electrochromic device, and obtain the historical target open circuit voltage corresponding to the last switch to the current gear position; The processor is further configured to: compare the currently measured open circuit voltage with the historical target open circuit voltage, if the difference between the currently measured open circuit voltage and the historical target open circuit voltage is greater than a preset value; The processor is further used to: compare the currently measured open circuit voltage with 0V; The driver is also used to: if the currently measured open-circuit voltage is less than 0V, charge the electrochromic device to an open-circuit voltage equal to 0V, and switch the electrochromic device to the current gear position according to the historical target open-circuit voltage, and / or, if the currently measured open-circuit voltage is greater than 0V, discharge the electrochromic device to an open-circuit voltage equal to 0V, and switch the electrochromic device to the target gear position according to the target open-circuit voltage.

23. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is run on a computing unit, the shift control method according to any one of claims 1 to 11 is executed.

24. A shift control system for an electrochromic device, characterized in that: It comprises a terminal platform and a gear shift control device as described in any one of claims 12 to 22, wherein the gear shift control device receives a gear shift control instruction sent by the terminal platform.

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