EP-4741915-A1 - SHIFT CONTROL METHOD, APPARATUS AND SYSTEM FOR DIMMABLE DEVICE, AND MEDIUM

EP4741915A1EP 4741915 A1EP4741915 A1EP 4741915A1EP-4741915-A1

Abstract

A level-switch control method for a dimmable device, an apparatus, a medium, and a system. The level-switch control method includes the following steps: receiving a first level-switch instruction, where the first level-switch instruction carries a first target open-circuit voltage, and obtaining a first current open-circuit voltage and a current temperature of the dimmable device; determining a charging parameter or a discharging parameter applied to the dimmable device based on the current temperature, and determining a charging condition applied to the dimmable device based on the charging parameter or determining a discharging condition applied to the dimmable device based on the discharging parameter; and controlling the dimmable device to perform a charging operation based on the charging condition, or controlling the dimmable device to perform a discharging operation based on the discharging condition. According to the level-switch control method, the impact of temperature on a color-changing process of the dimmable device is considered, so that the color-changing reliability of the device is more effectively enhanced, and thus the user experience is improved.

Inventors

YANG, HAN
ZHONG, Zhuohong
XING, Xiaoshu

Assignees

Shenzhen Guangyi Tech Co., Ltd.

Dates

Publication Date: 20260513
Application Date: 20240425

Claims (20)

A level-switch control method for a dimmable device, characterized by comprising: receiving a first level-switch instruction, the first level-switch instruction carrying a first target open-circuit voltage, and obtaining a first current open-circuit voltage and a current temperature of the dimmable device; determining a charging parameter or a discharging parameter applied to the dimmable device based on the current temperature, and determining a charging condition applied to the dimmable device based on the charging parameter or determining a discharging condition applied to the dimmable device based on the discharging parameter; calculating to determine a first target charge quantity based on the first target open-circuit voltage and the first current open-circuit voltage, obtaining a current accumulated charge quantity of the dimmable device, and determining whether to perform a charging operation or a discharging operation on the dimmable device according to a magnitude relationship between the accumulated charge quantity and the first target charge quantity; and controlling the dimmable device to perform a charging operation based on the charging condition, or controlling the dimmable device to perform a discharging operation based on the discharging condition.
The level-switch control method according to claim 1, characterized in that the determining the charging parameter or the discharging parameter applied to the dimmable device based on the current temperature comprises: determining a temperature range corresponding to the current temperature; and determining the charging parameter or the discharging parameter applied to the dimmable device according to the temperature range and a corresponding relationship between the temperature range and the charging parameter or the discharging parameter.
The level-switch control method according to claim 1, characterized in that the determining the charging parameter or the discharging parameter applied to the dimmable device based on the current temperature comprises: determining a temperature range corresponding to the current temperature; determining a transmittance variation range of the dimmable device based on the temperature range and a corresponding relationship between the temperature range and the transmittance variation range; and determining the charging parameter or the discharging parameter applied to the dimmable device according to the transmittance variation range and a corresponding relationship between the transmittance variation range and the charging parameter or the discharging parameter.
The level-switch control method according to claim 1, characterized in that the charging parameter comprises at least one of a maximum charging voltage, a maximum charging current, a charging cut-off current and a charging cut-off duration, or alternatively, the discharging parameter comprises at least one of a maximum discharging voltage, a maximum discharging current, a discharging cut-off current and a discharging cut-off duration.
The level-switch control method according to claim 1, characterized in that the first level-switch instruction further carries a first target level, and the level-switch control method further comprises: determining that the first target level is a current target level, and/or determining that the first target open-circuit voltage is a current target open-circuit voltage.
The level-switch control method according to claim 5, characterized in that after the controlling the dimmable device to perform the charging operation based on the charging condition, or after the controlling the dimmable device to perform the discharging operation based on the discharging condition, the level-switch control method further comprises: interrupting the charging operation when a charging cut-off condition is not met but a second level-switch instruction is received, or interrupting the discharging operation when a discharging cut-off condition is not met but the second level-switch instruction is received.
The level-switch control method according to claim 6, characterized in that the second level-switch instruction carries a second target open-circuit voltage and a second target level, and after the interrupting the charging operation when a charging cut-off condition is not met but a second level-switch instruction is received, or the interrupting the discharging operation when a discharging cut-off condition is not met but the second level-switch instruction is received, the level-switch control method further comprises: determining that the second target level is the current target level, and/or determining that the second target open-circuit voltage is the current target open-circuit voltage; calculating to determine a second target charge quantity based on the second target open-circuit voltage and the first current open-circuit voltage, obtaining the current accumulated charge quantity of the dimmable device, and determining whether to perform the charging operation or the discharging operation on the dimmable device according to a magnitude relationship between the accumulated charge quantity and the second target charge quantity; and controlling the dimmable device to perform the charging operation based on the charging condition, or controlling the dimmable device to perform the discharging operation based on the discharging condition.
The level-switch control method according to claim 5 or 7, characterized in that after the controlling the dimmable device to perform the charging operation based on the charging condition, or after the controlling the dimmable device to perform the discharging operation based on the discharging condition, the level-switch control method further comprises: stopping the charging operation when a charging cut-off condition is met, or stopping the discharging operation when a discharging cut-off condition is met.
The level-switch control method according to claim 4, characterized in that the charging condition comprises at least one of following conditions: a current charging current of the dimmable device is smaller than or equal to the maximum charging current, and a current charging voltage of the dimmable device is smaller than or equal to the maximum charging voltage; or alternatively, the discharging condition comprises at least one of following conditions: a current discharging current of the dimmable device is smaller than or equal to the maximum discharging current, and a current discharging voltage of the dimmable device is smaller than or equal to the maximum discharging voltage.
The level-switch control method according to claim 6 or 8, characterized in that the charging cut-off condition is determined based on the charging parameter, and the charging parameter comprise at least one of a maximum charging voltage, a maximum charging current, a charging cut-off current and a charging cut-off duration, wherein the charging cut-off condition comprises at least one of the following conditions: a current charging current of the dimmable device is smaller than or equal to the charging cut-off current, the current accumulated charge quantity of the dimmable device is not smaller than the first target charge quantity or the second target charge quantity, and a current accumulated charging duration of the dimmable device is greater than or equal to the charging cut-off duration; or alternatively, the discharging cut-off condition is determined based on the discharging parameter, and the discharging parameter comprise at least one of a maximum discharging voltage, a maximum discharging current, a discharging cut-off current and a discharging cut-off duration, wherein the discharging cut-off condition comprises at least one of the following conditions: a current discharging current of the dimmable device is smaller than or equal to the discharging cut-off current, the current accumulated charge quantity of the dimmable device is not greater than the first target charge quantity or the second target charge quantity, and a current accumulated discharging duration of the dimmable device is greater than or equal to the discharging cut-off duration.
The level-switch control method according to claim 8, characterized in that after the stopping the charging operation when the charging cut-off condition is met, or after the stopping the discharging operation when the discharging cut-off condition is met, the level-switch control method further comprises: sending a first-stage level-switch completion signal.
The level-switch control method according to claim 8, characterized in that after the stopping the charging operation when the charging cut-off condition is met, or after the stopping the discharging operation when the discharging cut-off condition is met, the level-switch control method further comprises: leaving the dimmable device to rest and recording a rest duration; and sending a second-stage level-switch completion signal when the rest duration reaches a preset rest duration.
The level-switch control method according to claim 8, characterized in that after the stopping the charging operation when the charging cut-off condition is met, or after the stopping the discharging operation when the discharging cut-off condition is met, the level-switch control method further comprises: leaving the dimmable device to rest and recording a rest duration; reading a third target open-circuit voltage and a third target level corresponding to a third level-switch instruction when the rest duration does not reach the preset rest duration and the third level-switch instruction is received; determining that the third target level is the current target level, and/or determining that the third target open-circuit voltage is the current target open-circuit voltage; and calculating to determine a third target charge quantity based on the third target open-circuit voltage and the first current open-circuit voltage, obtaining the current accumulated charge quantity of the dimmable device, and determining whether to perform the charging operation or the discharging operation on the dimmable device according to a magnitude relationship between the accumulated charge quantity and the third target charge quantity.
The level-switch control method according to claim 12, characterized in that the sending the second-stage level-switch completion signal when the rest duration reaches the preset rest duration comprises: determining whether the current target level is a lowest level or a highest level when the rest duration reaches the preset rest duration; and sending the second-stage level-switch completion signal when the current target level is the lowest level or the highest level.
The level-switch control method according to claim 12, characterized in that the sending the second-stage level-switch completion signal when the rest duration reaches the preset rest duration comprises: determining whether the current target level is a lowest level or a highest level when the rest duration reaches the preset rest duration; obtaining a second current open-circuit voltage of the dimmable device when the current target level is neither the lowest level nor the highest level; calculating to determine a first voltage difference between the second current open-circuit voltage and the current target open-circuit voltage; and sending the second-stage level-switch completion signal when the first voltage difference is in a preset voltage error range.
The level-switch control method according to claim 12, characterized in that the sending the second-stage level-switch completion signal when the rest duration reaches the preset rest duration comprises: determining whether the current target level is a lowest level or a highest level when the rest duration reaches the preset rest duration; obtaining a second current open-circuit voltage of the dimmable device when the current target level is neither the lowest level nor the highest level; calculating to determine a first voltage difference between the second current open-circuit voltage and the current target open-circuit voltage; and performing a charging correction or a discharging correction on the dimmable device when the first voltage difference is not in a preset voltage error range.
The level-switch control method according to claim 16, characterized in that after the performing the charging correction or the discharging correction on the dimmable device when the first voltage difference is not in the preset voltage error range, the level-switch control method further comprises: obtaining a third current open-circuit voltage of the dimmable device; calculating to determine a second voltage difference between the third current open-circuit voltage and the current target open-circuit voltage; and sending the second-stage level-switch completion signal when the second voltage difference is in the preset voltage error range.
A level-switch control apparatus for a dimmable device, characterized by comprising: a receiver configured to receive a first level-switch instruction, the first level-switch instruction carrying a first target open-circuit voltage; a sampler configured to obtain a first current open-circuit voltage and a current temperature of the dimmable device; a processor configured to determine a charging parameter or a discharging parameter applied to the dimmable device based on the current temperature, and determine a charging condition applied to the dimmable device based on the charging parameter or determine a discharging condition applied to the dimmable device based on the discharging parameter; and calculate to determine a first target charge quantity based on the first target open-circuit voltage and the first current open-circuit voltage, obtain a current accumulated charge quantity of the dimmable device, and determine whether to perform a charging operation or a discharging operation on the dimmable device according to a magnitude relationship between the accumulated charge quantity and the first target charge quantity; and a driver configured to control based on the charging condition to perform a charging operation on the dimmable device, or to control based on the discharging condition to perform a discharging operation on the dimmable device.
The level-switch control apparatus according to claim 18, characterized in that the processor is specifically configured to: determine a temperature range corresponding to the current temperature; and determine the charging parameter or the discharging parameter applied to the dimmable device according to the temperature range and a corresponding relationship between the temperature range and the charging parameter or the discharging parameter.
The level-switch control apparatus according to claim 18, characterized in that the processor is specifically configured to: determine a temperature range corresponding to the current temperature; determine a transmittance variation range of the dimmable device based on the temperature range and a corresponding relationship between the temperature range and the transmittance variation range; and determine the charging parameter or the discharging parameter applied to the dimmable device according to the transmittance variation range and a corresponding relationship between the transmittance variation range and the charging parameter or the discharging parameter.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This disclosure claims the benefit of the Chinese Patent Application No. 2023108261066 filed with the Chinese Patent Office on July 6, 2023, entitled "Level-Switch Control Method for Dimmable Device, Apparatus, Medium, and System." The entire content of which is incorporated by reference in the present disclosure. TECHNICAL FIELD The present disclosure relates to the field of electro-optical modulation technology, and more particularly, to a level-switch control method for a dimmable device, an apparatus, a medium, and a system. BACKGROUND Electro-optical modulation technology is a technique that regulates the light beam by applying an external electric field to change the physical or chemical properties of a medium, causing changes in the intensity and spectral distribution of the light beam emitted through the medium. In recent years, devices that can utilize electro-optical modulation technology, such as liquidcrystal, electrochromic and other dimmable devices, have been increasingly applied to various fields such as electronic devices, wearable devices, vehicles and buildings. In existing technologies, by applying different voltages or currents to dimmable devices, the devices can change color, that is, their color or light transmittance can be altered, allowing the light beam to pass through completely, partially, or not at all. According to different light beam transmittances, the chromatic state of the dimmable device can be categorized into different levels, and the process for controlling the dimmable device to change color can be called a level-switching process. However, the chromatic behavior of most dimmable devices depends not only on voltage/current but also on temperature. For example, under different temperatures, the color-changing reliability of the dimmable device can be different. Therefore, in the process of level-switching and regulating the dimmable device, it is often necessary to consider the impact of temperature on the color-changing process in order to more effectively enhance the color-changing reliability of the device. SUMMARY In view of this, the present disclosure provides a level-switch control method and a related apparatus for a dimmable device, which takes into account the impact of temperature on the color-changing process of the dimmable device, so as to more effectively enhance the color-changing reliability of the device, and thus improve the user experience. To overcome the above-mentioned shortcomings in the existing technologies, a first aspect of the present disclosure provides a level-switch control method for a dimmable device. The level-switch control method includes steps of: receiving a first level-switch instruction in which a first target open-circuit voltage is carried and obtaining a first current open-circuit voltage and a current temperature of the dimmable device; determining a charging parameter or a discharging parameter applied to the dimmable device based on the current temperature, and determining a charging condition applied to the dimmable device based on the charging parameter or determining a discharging condition applied to the dimmable device based on the discharging parameter; calculating to determine a first target charge quantity based on the first target open-circuit voltage and the first current open-circuit voltage, obtaining a current accumulated charge quantity of the dimmable device, and determining to perform a charging operation or a discharging operation on the dimmable device according to a magnitude relationship between the accumulated charge quantity and the first target charge quantity; and controlling the dimmable device to perform a charging operation based on the charging condition, or controlling the dimmable device to perform a discharging operation based on the discharging condition. In the first aspect of the present disclosure, the current temperature of the dimmable device is obtained, and the charging parameter or the discharging parameter applied to the dimmable device is determined based on the current temperature, the charging condition used when charging the dimmable device is further determined based on the charging parameter, or determining the discharging condition used when discharging the dimmable device is further determined based on the discharging parameter. That is, the impact of temperature on the color-changing process (charging operation or discharging operation) of the dimmable device has been taken into account, the charging condition or discharging condition is determined according to the current temperature of the dimmable device, so that a more effective level-switching control of the dimmable device at different temperatures is achieved. Thereby the color-changing reliability of the dimmable device can be more effectively enhanced and the user experience is improved. Further, the step of determining the charging parameter or the discharging parameter ap