Driving circuit for driving electric control glass

Abstract

The present disclosure relates to a driver circuit (100) for an electrically controlled glass (200). The driving circuit (100) comprises: a power supply module (10) configured to provide a first voltage; and a conversion circuit (20) configured to convert the first voltage into a second voltage alternately changing between a positive voltage and a negative voltage, the second voltage being configured to be provided to the electrically controlled glass (200) to adjust the transparency of the electrically controlled glass (200); wherein a voltage value of the second voltage is set to vary in a voltage interval of the positive voltage and a voltage interval of the negative voltage, respectively, where at least one of the voltage interval of the positive voltage and the voltage interval of the negative voltage includes a low voltage region and a high voltage region, and where an average voltage of the high voltage region is higher than an average voltage of the low voltage region, and the voltage change rate of the high-voltage region is lower than that of the low-voltage region.

Description

Technical Field

[0001] The present disclosure relates to electrically-controlled glass, and more particularly to a driving circuit for driving electrically-controlled glass, an electrically-controlled glass assembly for a vehicle, and a vehicle. Background Art

[0002] Electric-controlled glass is a kind of electro-liquid crystal electric-controlled glass, also known as dimming glass and photoelectric glass. It is widely used in high-end smart doors and windows, privacy protection, light adjustment and other fields. It can also be used in automotive glass, such as car skylights. Usually, electric-controlled glass includes a layer of electric-controlled dimming film sandwiched between two layers of glass. Its dimming principle is: when the dimming film is not applied with voltage, the liquid crystal molecules in the dimming film are in an irregular dispersion state, and the electric-controlled glass presents an opaque appearance; when the alternating voltage is applied to the dimming film, the liquid crystal molecules in the dimming film are neatly arranged, and light can penetrate freely, and the electric-controlled glass presents a transparent state. Traditional electric-controlled glass is not satisfactory in terms of control, and there is room for further improvement. Summary of the invention

[0003] The object of the present disclosure is to provide a driving circuit for driving an electrically-controlled glass, an electrically-controlled glass assembly for a vehicle, and a vehicle, aiming to solve one or more of the above-mentioned problems and other potential problems.

[0004] The first aspect of the present disclosure provides a driving circuit for electrically controlled glass. The driving circuit includes: a power module configured to provide a first voltage; and a conversion circuit configured to convert the first voltage into a second voltage that alternates between a positive voltage and a negative voltage, the second voltage being configured to be provided to the electrically controlled glass to adjust the transparency of the electrically controlled glass; wherein the voltage value of the second voltage is set to change in the voltage interval of the positive voltage and the voltage interval of the negative voltage, respectively, wherein at least one of the voltage interval of the positive voltage and the voltage interval of the negative voltage includes a low voltage area and a high voltage area, and wherein the average voltage of the high voltage area is higher than the average voltage of the low voltage area, and the voltage change rate of the high voltage area is lower than the voltage change rate of the low voltage area.

[0005] In some embodiments, the conversion circuit includes: a microprocessor configured to generate a modulation signal based on a preset modulation rule; and an alternating signal generator configured to modulate the first voltage into an alternating voltage signal that alternates between a positive voltage and a negative voltage based on the modulation signal.

[0006] In some embodiments, the alternating signal generator includes a first alternating signal generating circuit and a second alternating signal generating circuit, and the first alternating signal generating circuit and the second alternating signal generating circuit each include two switches, and the two switches are controlled by the microprocessor to be selectively opened or closed to modulate the first voltage into an alternating voltage signal that alternates between a positive voltage and a negative voltage.

[0007] In some embodiments, the microprocessor is configured to generate a modulation signal based on pulse width modulation (PWM), wherein for each cycle, the PWM includes at least four modulation time periods, and the at least four modulation time periods include a first modulation time period and a second modulation time period for the positive voltage and a third modulation time period and a fourth modulation time period for the negative voltage; in the first modulation time period, the duty cycle of the modulation signal increases from 0 to a first predetermined value; in the second modulation time period, the duty cycle of the modulation signal decreases from the first predetermined value to zero; in the third modulation time period, the duty cycle of the modulation signal increases from 0 to a second predetermined value; in the fourth modulation time period, the duty cycle of the modulation signal decreases from the second predetermined value to zero.

[0008] In some embodiments, the first predetermined value is equal to the second predetermined value; and / or at least two of the first modulation time period, the second modulation time period, the third modulation time period, and the fourth modulation time period are equal to each other.

[0009] In some embodiments, at least one of the first predetermined value and the second predetermined value is adjustable; and / or the first predetermined value and the second predetermined value are less than or equal to 1; and / or

[0010] At least two of the first modulation time period, the second modulation time period, the third modulation time period, and the fourth modulation time period are adjustable.

[0011] In some embodiments, the conversion circuit further includes a filter circuit configured to filter out high-frequency signals in the modulated alternating voltage signal.

[0012] In some embodiments, the effective value of the second voltage is in the range of 36 to 48 V; and / or the frequency of the second voltage is in the range of 40 Hz to 100 Hz.

[0013] In some embodiments, the conversion circuit also includes a partition control circuit and a driver, the partition control circuit including at least a first partition control circuit for controlling a first partition of the electrically-controlled glass and a second partition control circuit for controlling a second partition of the electrically-controlled glass, wherein the driver is configured to provide the second voltage to the corresponding partition of the electrically-controlled glass based on corresponding partition control signals from the first partition control circuit and the second partition control circuit.

[0014] A second aspect of the present disclosure provides an electrically controlled glass assembly for a car. The electrically controlled glass assembly comprises: electrically controlled glass installed on the car; and a driving circuit according to any one of the first aspects.

[0015] In some embodiments, the drive circuit is configured to be connected to a body control module, and the power module is configured to draw power from the body control module.

[0016] In some embodiments, the driving circuit further includes a buck regulator circuit configured to convert a DC voltage from the body control module into a voltage for powering a microprocessor of the conversion circuit.

[0017] In some embodiments, the microprocessor of the conversion circuit is configured to communicate with the body control module via a controller area network (CAN) communication module to obtain input related to the regulation of the circuit from the body control module.

[0018] In some embodiments, the electrically-operated glass assembly further includes a body control module configured to provide power to the electrically-operated glass assembly.

[0019] In some embodiments, the body control module also includes a user interface, which is configured to receive input from a user, and the input includes one or more of the following: an input for adjusting the magnitude of the second voltage, an input for adjusting the frequency of change of the second voltage, and an input for selecting different partitions of the electrically-controlled glass.

[0020] A third aspect of the present disclosure provides a car, comprising the electrically-controlled glass assembly according to any one of the second aspects.

[0021] The driving circuit for driving the electric-controlled glass, the electric-controlled glass assembly for a car, and the car disclosed in the present invention can reduce the impact of the electric-controlled glass, thereby extending the service life of the electric-controlled glass and improving the stability of the electric-controlled glass. In addition, through zoning control, the user's needs for different transparency of glass in different areas are met. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other objects, features and advantages of the embodiments of the present disclosure will become readily understood by reading the following detailed description with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present disclosure are shown by way of example and not limitation.

[0023] Figure 1 shows an overall schematic diagram of a driving circuit for driving an electrically controlled glass according to a first embodiment of the present disclosure;

[0024] Figure 2 shows an overall schematic diagram of a driving circuit for driving an electrically controlled glass according to a second embodiment of the present disclosure;

[0025] Figure 3 shows an overall schematic diagram of a driving circuit for driving an electrically controlled glass according to a third embodiment of the present disclosure; and

[0026] Figure 4 FIG. 4 is an overall schematic diagram of a driving circuit for driving electrically controlled glass according to a fourth embodiment of the present disclosure. DETAILED DESCRIPTION

[0027] Unless otherwise indicated, corresponding numbers and symbols in different figures generally refer to corresponding module domains. The accompanying drawings are drawn to clearly illustrate the relevant aspects of the embodiments and are not necessarily drawn to scale. The edges of features drawn in the accompanying drawings do not necessarily represent the end of the feature range.

[0028] References to "one embodiment" or "an implementation" in the framework of this specification are intended to indicate that a particular configuration, structure, or characteristic described with respect to the embodiment is included in at least one embodiment. Therefore, phrases such as "in an embodiment," "in one embodiment," etc., which may appear in various aspects of this specification, do not necessarily refer to exactly the same embodiment. Furthermore, particular configurations, structures, or characteristics may be combined in any appropriate manner in one or more embodiments.

[0029] Although electrically controlled glass has advantages in adjusting the transparency of glass, it is prone to damage. The inventor of the present application has found through extensive research that the main reason why electrically controlled glass is prone to damage is that the liquid crystal molecules in the dimming film are easily damaged under high voltage shocks, especially when the dimming film is driven by a square wave signal. In view of this, a new control circuit is proposed according to the present disclosure, aiming to improve the service life of electrically controlled glass.

[0030] Figure 1 FIG. 1 shows an overall schematic diagram of a driving circuit 100 for driving an electrically controlled glass according to a first embodiment of the present disclosure. Figure 1As shown, the driving circuit 100 is used to control and drive the electric control glass 200. The circuit 100 includes a power module 10 and a conversion circuit 20. The power module 10 is configured to provide a first voltage, for example, configured to provide a DC power of a predetermined voltage. In some embodiments, the power module 10 can be connected to a power adapter, and the power adapter can convert a power source such as a mains power source into a DC power source of a predetermined voltage. In some embodiments, for example, the circuit 10 is applied to an application scenario such as an automobile, the power module 10 can be connected to a vehicle control power source, and is configured to convert the vehicle control power source into a predetermined voltage. In some embodiments, the power module 10 may include a constant voltage boost circuit, which is configured to increase the DC voltage from the body control module to a predetermined constant voltage.

[0031] The conversion circuit 20 is configured to convert the first voltage into a second voltage for driving the electrically controlled glass 200. In some embodiments, the second voltage alternates between a positive voltage and a negative voltage. When the second voltage is configured to be provided to the electrically controlled glass 200, the electrically controlled glass 200 can present different transparencies based on the voltage value of the second voltage.

[0032] According to the present disclosure, the voltage value of the second voltage is set to change in the voltage interval of the positive voltage and the voltage interval of the negative voltage, respectively, and each voltage interval in the voltage interval of the positive voltage and the voltage interval of the negative voltage includes a low voltage area and a high voltage area. The average voltage of the high voltage area is higher than the average voltage of the low voltage area. Thus, by providing the low voltage area and the high voltage area, whether it is the voltage interval of the positive voltage or the voltage interval of the negative voltage, the amount of power continuously supplied to the electric control glass 200 can be reduced, thereby extending the life of the electric control glass. In some embodiments, the voltage change rate of the high voltage area is lower than the voltage change rate in the low voltage area, where the voltage change rate refers to the slope of the voltage relative to time. By reducing the fluctuation of the voltage in the high voltage area, the impact on the electric control glass can be further reduced, and the life of the electric control glass can be further improved. In some embodiments, the above-mentioned low voltage area and high voltage area partition can be implemented only in the voltage interval of the positive voltage or only in the voltage interval of the negative voltage, which can also reduce the impact on the electric control glass 200 to a certain extent and extend the life of the electric control glass.

[0033] In some embodiments, the effective value of the second voltage is in the range of 30 V to 60 V, particularly in the range of 36 to 48 V. In some embodiments, the frequency of the second voltage is in the range of 30 Hz to 150 Hz, particularly in the range of 40 Hz to 100 Hz. Experimental verification shows that the above value range is beneficial for extending the life of the electrically controlled glass.

[0034] In some embodiments, Figure 1As shown, the conversion circuit 20 may include a microprocessor 24 and an alternating signal generator 22. The microprocessor 24 is configured to generate a modulation signal based on a preset modulation rule. As an example, the microprocessor 24 may generate a switching signal. In some embodiments, the microprocessor 24 may generate a PWM modulation signal. The alternating signal generator 22 is configured to modulate the first voltage into an alternating voltage signal that alternates between a positive voltage and a negative voltage based on the modulation signal.

[0035] In some embodiments, Figure 1 As shown, the alternating signal generator 22 may include a first alternating signal generating circuit 222 and a second alternating signal generating circuit 224. The first alternating signal generating circuit 222 and the second alternating signal generating circuit 224 each include two switches, and the two switches are selectively opened or closed by the microprocessor 24 to modulate the first voltage into an alternating voltage signal that alternates between a positive voltage and a negative voltage. In some embodiments, the generated alternating signal may be a square wave. It should be understood that this is merely exemplary, and other types of alternating signals may also be used.

[0036] In some embodiments, the microprocessor 24 is configured to generate a modulation signal based on PWM. For each cycle consisting of alternating positive and negative voltages, PWM may include at least four modulation time periods. The at least four modulation time periods include a first modulation time period and a second modulation time period for positive voltages and a third modulation time period and a fourth modulation time period for negative voltages. In the first modulation time period, the duty cycle of the modulation signal increases from 0 to a first predetermined value; in the second modulation time period, the duty cycle of the modulation signal decreases from the first predetermined value to zero; in the third modulation time period, the duty cycle of the modulation signal increases from 0 to a second predetermined value; in the fourth modulation time period, the duty cycle of the modulation signal decreases from the second predetermined value to zero. Thus, the aforementioned voltage interval of the positive voltage including the low voltage area and the high voltage area and the voltage interval of the negative voltage including the low voltage area and the high voltage area can be conveniently realized.

[0037] In some embodiments, the first predetermined value is equal to the second predetermined value. In this case, the voltage interval of the positive voltage and the voltage interval of the negative voltage have equal effective voltages. In other embodiments, the first predetermined value may not be equal to the second predetermined value. In some embodiments, the first modulation time period, the second modulation time period, the third modulation time period, and the fourth modulation time period are equal to each other. This is particularly conducive to achieving a uniform change in voltage. It should be understood that this is merely exemplary, and in other embodiments, at least two of the first modulation time period, the second modulation time period, the third modulation time period, and the fourth modulation time period are equal.

[0038] In some embodiments, at least one of the first predetermined value and the second predetermined value is adjustable, for example, both are adjustable or only one is adjustable. In some embodiments, the first predetermined value and the second predetermined value are less than or equal to 1. In some embodiments, each of the first modulation time period, the second modulation time period, the third modulation time period, and the fourth modulation time period is adjustable. Thus, the effective value of the positive voltage and / or the negative voltage can be selectively adjusted.

[0039] Figure 2 FIG. 1 shows an overall schematic diagram of a driving circuit 100 for driving electrically controlled glass according to a second embodiment of the present disclosure. Figure 2 The embodiment shown is Figure 1 The embodiments shown are similar, and repeated descriptions of the same parts are omitted, and the differences are described in detail. Figure 2 In the illustrated embodiment, the conversion circuit 20 may further include a filter circuit 26. In some embodiments, the filter circuit may be an LC low-pass filter circuit, which may be used to filter out high-frequency signals in the alternating signal while retaining low-frequency signals. In some embodiments, for example, the filter circuit may be configured to generate a sine wave signal.

[0040] Figure 3 FIG. 4 is an overall schematic diagram of a driving circuit 100 for driving electrically controlled glass according to a third embodiment of the present disclosure. Figure 3 The embodiment shown is Figure 1 , Figure 2 The embodiments shown are similar, and repeated descriptions of the same parts are omitted, and the differences are described in detail. Figure 3 In the illustrated embodiment, the electrically controlled glass 200 may include a plurality of partitions 210, 220, and each partition 210, 220 may be independently controlled. This may enable transparency control of a specific region of the electrically controlled glass. In the illustrated embodiment, two partitions 210, 220 are shown. It should be understood that this is merely exemplary, and the number of partitions may be other numbers greater than 2.

[0041] In some embodiments, Figure 3As shown, the conversion circuit 20 may further include a partition control circuit 28 and a driver 40. The partition control circuit 28 may control the control circuit for the corresponding partition control. In some embodiments, the partition control circuit 28 may include a first partition control circuit for controlling the first partition 210 of the electrically controlled glass 200 and a second partition control circuit for controlling the second partition 220 of the electrically controlled glass 200. The driver 40 may be configured to provide a second voltage (e.g., an alternating voltage processed by a filter circuit) to the corresponding partition of the electrically controlled glass 200 based on a control signal from the corresponding partition. In some embodiments, the driver 40 may include two switching devices (e.g., MOS tubes), and the driver 40 may control the conduction and cutoff of each path controlled by each MOS based on a signal from the control circuit.

[0042] Figure 4 FIG. 1 shows an overall schematic diagram of a driving circuit 100 for driving an electrically controlled glass according to a fourth embodiment of the present disclosure. Figure 4 In the embodiment of the present invention, a scenario in which the electrically controlled glass is applied to automobile applications is also shown. It is worth noting that the illustrated application scenarios are merely exemplary, and the circuit can be applied to other application scenarios. The following takes the scenario in which the electrically controlled glass is used as automobile glass as an example to illustrate an exemplary operation process of the circuit 100 according to an embodiment of the present disclosure.

[0043] In some embodiments, Figure 4 As shown, the drive circuit 100 may be configured to be connected to a body control module 300. The body control module 300 may be provided with a power interface for powering the drive circuit 100 and / or a communication interface suitable for communicating with the drive circuit 100. The drive circuit 100 may include a conversion circuit 20. The conversion circuit 20 may include a microprocessor 24 and an alternating signal generator 22. The power module 10 of the conversion circuit 20 is configured to obtain power from the body control module 300.

[0044] In some embodiments, the power interface voltage provided by the body control module 300 is, for example, 12V, which may not be suitable for directly driving the power module 10. In some embodiments, the power module 10 may include a constant voltage boost circuit. The constant voltage boost circuit can increase the DC voltage from the body control module to a predetermined constant voltage. In some embodiments, the drive circuit 100 may also include a buck regulator circuit LDO. The buck regulator circuit LDO is configured to convert the DC voltage from the body control module 300 into a voltage for powering the microprocessor 24 of the conversion circuit 20.

[0045] Inside the conversion circuit 20, the voltage provided by the constant voltage boost circuit can be provided to the alternating signal generator 22. The microprocessor 24 is configured to generate a modulation signal based on a preset modulation rule, so that the alternating signal generator 22 modulates the voltage provided by the constant voltage boost circuit into an alternating voltage signal that alternates between a positive voltage and a negative voltage based on the modulation signal. In some embodiments, the modulation signal can be adjusted by the user. Since the magnitude of the alternating voltage is related to the transparency of the electrically controlled glass, the user can set the magnitude of the alternating voltage signal based on the desired transparency.

[0046] In some embodiments, Figure 4 As shown, the alternating signal generator 22 may include a first alternating signal generating circuit 222 and a second alternating signal generating circuit 224. The first alternating signal generating circuit 222 and the second alternating signal generating circuit 224 each include two switches, which are selectively opened or closed under the control of the microprocessor 24 to modulate the first voltage into an alternating voltage signal that alternates between a positive voltage and a negative voltage.

[0047] The alternating voltage signal processed by the alternating signal generator 22 can also be output to the filter circuit 26. The filter circuit can be configured to filter out high-frequency signals in the alternating signal. In some embodiments, the filter circuit 26 can be configured to generate a sine wave signal.

[0048] exist Figure 4 In the illustrated embodiment, the electrically controlled glass 200 may include a plurality of partitions 210, 220, and each partition 210, 220 may be independently controlled. The conversion circuit 20 may further include a partition control circuit 28 and a driver 40. The partition control circuit 28 may include a first partition control circuit 282 for controlling a first partition 210 of the electrically controlled glass 200 and a second partition control circuit 284 for controlling a second partition 220 of the electrically controlled glass 200. The partition control circuit 28 may be connected to the microprocessor 28 to receive a partition instruction selected by a user. The driver 40 may be configured to provide an alternating voltage processed by a filter circuit to a corresponding partition of the electrically controlled glass 200 based on a control signal from a corresponding partition.

[0049] In some embodiments, the conversion circuit 20 may further include a communication module, and the communication module may be, for example, a CAN communication module 70. The microprocessor 24 of the conversion circuit 20 may communicate with the body control module 300 via the CAN communication module 70. In some embodiments, the body control module 300 further includes a user interface. The user interface is configured to receive input from a user. The input includes one or more of the following: an input for adjusting the magnitude of the second voltage, an input for adjusting the frequency of change of the second voltage, and an input for selecting different partitions of the electrically controlled glass. In some embodiments, since the magnitude of the second voltage is related to the transparency of the glass, the user interface may display adjustment options related to the transparency. Thus, the user can conveniently adjust the operating parameters of the drive circuit 100 using the user interface of the body control module 300.

[0050] According to the present disclosure, an electrically controlled glass assembly for a car is also provided. The electrically controlled glass assembly comprises an electrically controlled glass 200 mounted on a car and a driving circuit 100 according to any aspect of the present disclosure. According to the present disclosure, a car is also provided, comprising an electrically controlled glass assembly.

[0051] Through the teachings given in the above description and the related drawings, many modifications and other embodiments of the present disclosure given here will be recognized by those skilled in the art of the present disclosure. Therefore, it is to be understood that the embodiments of the present disclosure are not limited to the specific embodiments disclosed, and modifications and other embodiments are intended to be included in the scope of the present disclosure. In addition, although the above description and the related drawings describe the example embodiments in the context of some example combinations of parts and / or functions, it should be appreciated that different combinations of parts and / or functions can be provided by alternative embodiments without departing from the scope of the present disclosure. In this regard, for example, other combinations of parts and / or functions that are different from those clearly described above are also expected to be within the scope of the present disclosure. Although specific terms are used here, they are only used in a general and descriptive sense and are not intended to be limited.

Claims

1. A driving circuit (100) for electrically controlled glass (200), comprising: A power module (10) configured to provide a first voltage; as well as A conversion circuit (20) configured to convert the first voltage into a second voltage that alternates between a positive voltage and a negative voltage, wherein the second voltage is configured to be provided to the electrically controlled glass (200) to adjust the transparency of the electrically controlled glass (200); The voltage value of the second voltage is set to change in the voltage interval of the positive voltage and the voltage interval of the negative voltage respectively, wherein at least one of the voltage interval of the positive voltage and the voltage interval of the negative voltage includes a low voltage area and a high voltage area, and wherein the average voltage of the high voltage area is higher than the average voltage of the low voltage area, and the voltage change rate of the high voltage area is lower than the voltage change rate of the low voltage area.

2. The driving circuit according to claim 1, wherein the conversion circuit (20) comprises: A microprocessor (24) configured to generate a modulation signal based on a preset modulation rule; as well as The alternating signal generator (22) is configured to modulate the first voltage into an alternating voltage signal that alternates between a positive voltage and a negative voltage based on the modulation signal.

3. The driving circuit according to claim 2, wherein the alternating signal generator (22) comprises a first alternating signal generating circuit (222) and a second alternating signal generating circuit (224), The first alternating signal generating circuit (222) and the second alternating signal generating circuit (224) each include two switches, which are controlled by the microprocessor (24) to be selectively opened or closed to modulate the first voltage into an alternating voltage signal that alternates between a positive voltage and a negative voltage.

4. The driving circuit according to claim 2 or 3, wherein the microprocessor (24) is configured to generate a modulation signal based on pulse width modulation, wherein for each cycle, the pulse width modulation includes at least four modulation time periods, the at least four modulation time periods including a first modulation time period and a second modulation time period for the positive voltage and a third modulation time period and a fourth modulation time period for the negative voltage; In the first modulation time period, the duty cycle of the modulation signal increases from 0 to a first predetermined value; In the second modulation time period, the duty cycle of the modulation signal decreases from the first predetermined value to zero; In the third modulation time period, the duty cycle of the modulation signal increases from 0 to a second predetermined value; In the fourth modulation period, the duty cycle of the modulation signal decreases from the second predetermined value to zero.

5. The driving circuit according to claim 4, wherein the first predetermined value is equal to the second predetermined value; and / or at least two of the first modulation time period, the second modulation time period, the third modulation time period, and the fourth modulation time period are equal to each other.

6. The driving circuit according to claim 5, wherein at least one of the first predetermined value and the second predetermined value is adjustable; and / or The first predetermined value and the second predetermined value are less than or equal to 1; and / or At least two of the first modulation time period, the second modulation time period, the third modulation time period, and the fourth modulation time period are adjustable.

7. The driving circuit according to any one of claims 2-3, 5 and 6, wherein the conversion circuit (20) further comprises a filtering circuit (26), wherein the filtering circuit (26) is configured to filter out high-frequency signals in the modulated alternating voltage signal.

8. The driving circuit according to claims 1-3, 5, 6, and 8, wherein the effective value of the second voltage is in the range of 36 to 48 V; and / or the frequency of the second voltage is in the range of 40 Hz to 100 Hz.

9. The driving circuit according to any one of claims 1 to 3, 5, 6 and 8, wherein the conversion circuit (20) further comprises a partition control circuit (28) and a driver (40), the partition control circuit (28) comprising at least a first partition control circuit (282) for controlling a first partition (210) of the electrically-controlled glass (200) and a second partition control circuit (284) for controlling a second partition (220) of the electrically-controlled glass (200), The driver (40) is configured to provide the second voltage to corresponding partitions (210, 220) of the electrically controlled glass (200) based on corresponding partition control signals from the first partition control circuit (282) and the second partition control circuit (284).

10. An electrically controlled glass assembly for a car, comprising: An electrically controlled glass (200) mounted on a vehicle; as well as The drive circuit (100) according to any one of claims 1 to 9.

11. The electrically controlled glass assembly according to claim 10, wherein the drive circuit (100) is configured to be connected to a vehicle body control module (300), and the power module (10) is configured to obtain power from the vehicle body control module (300).

12. The electrically controlled glass assembly according to claim 10, wherein the drive circuit further comprises a step-down voltage regulator circuit (60) configured to convert a DC voltage from the vehicle body control module (300) into a voltage for powering a microprocessor (24) of the conversion circuit (20).

13. The electrically controlled glass assembly according to claim 12, wherein the microprocessor (24) of the conversion circuit (20) is configured to communicate with the body control module (300) through a controller area network bus communication module (70) to obtain input related to the regulation of the circuit from the body control module (300).

14. The electrically-controlled glass assembly according to any one of claims 10-13, further comprising a body control module (300) configured to provide power to the electrically-controlled glass assembly.

15. The electrically-controlled glass assembly according to claim 14, wherein the body control module (300) further comprises a user interface, wherein the user interface is configured to receive input from a user, wherein the input comprises one or more of the following: an input for adjusting the magnitude of the second voltage, an input for adjusting the frequency of change of the second voltage, and an input for selecting different partitions of the electrically-controlled glass (200).

16. An automobile comprising the electrically controlled glass assembly according to any one of claims 10 to 15.

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