Power management circuit and electric control dimming glass

Abstract

The utility model discloses a power management circuit and electric control dimming glass. The circuit comprises an input power supply module; the step-down module comprises a plurality of adjustable step-down units, and the input ends of the adjustable step-down units are electrically connected with the input power supply module so as to receive power supply voltage signals output by the input power supply module; the voice recognition module comprises a signal output end; the relay module comprises a common voltage output end, a plurality of voltage input ends and a control signal end, the voltage input ends are electrically connected with the output end of the adjustable voltage reduction unit, and the control signal end is electrically connected with the signal output end; and the output power supply module is electrically connected with the common voltage output end of the relay module, and a target voltage signal is output through the output power supply module. According to the utility model, the transparency of the electronic control dimming glass can be intelligently controlled by voice.

Description

Technical Field

[0001] The utility model relates to the technical field of dimming glass, in particular to a power management circuit and electrically controlled dimming glass. Background Art

[0002] Switchable glass is a special type of glass with adjustable transparency. By applying voltage, the arrangement of liquid crystals or electrochromic materials within the glass changes, thereby adjusting light transmittance. By controlling the transparency of switchable glass, privacy can be effectively protected, light can be adjusted, and energy conservation and consumption can be reduced.

[0003] In related technologies, the DC power supply used in dimming glass provides a constant output voltage, which is set during production and cannot be adjusted according to actual needs. In addition, the DC power supply needs to be manually turned on and off, and intelligent control cannot be achieved, which reduces the intelligence level of the electrically controlled dimming glass. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a power management circuit and electrically controlled dimming glass, which can adjust the output voltage of a DC power supply through voice control, thereby improving the intelligence level of the electrically controlled dimming glass.

[0005] According to the power management circuit of the embodiment of the first aspect of the present utility model, the power management circuit includes: an input power module; a step-down module, the step-down module includes multiple adjustable step-down units, the input end of the adjustable step-down unit is electrically connected to the input power module to receive the power voltage signal output from the input power module, wherein, after receiving the power voltage signal, the step-down module outputs multiple different step-down voltage signals through the output ends of the multiple adjustable step-down units; a voice recognition module, the voice recognition module includes a signal output end, and the voice recognition module outputs a voltage control signal through the signal output end; a relay module, the relay module includes a common voltage output end, multiple voltage input ends and a control signal end, the voltage input end is electrically connected to the output end of the adjustable step-down unit, and the control signal end is electrically connected to the signal output end, wherein, after receiving the voltage control signal, the relay module outputs a step-down voltage signal in response to the voltage control signal through the common voltage output end; an output power module, the output power module is electrically connected to the common voltage output end of the relay module, and outputs a target voltage signal through the output power module.

[0006] In some embodiments, the step-down module also includes a power supply step-down unit, and the voice recognition module also includes a power supply terminal and a ground terminal. The positive pole of the input terminal of the power supply step-down unit is electrically connected to the positive pole of the output terminal of the input power module, the negative pole of the input terminal of the power supply step-down unit is electrically connected to the negative pole of the output terminal of the input power module, the positive pole of the output terminal of the power supply step-down unit is electrically connected to the power supply terminal, and the negative pole of the output terminal of the power supply step-down unit is electrically connected to the ground terminal.

[0007] In some embodiments, the power management circuit also includes a display module, the first end of the display module is electrically connected to the positive output terminal of the power supply step-down unit, the second end of the display module is electrically connected to the negative output terminal of the power supply step-down unit, and the third end of the display module is electrically connected to the output power module.

[0008] In some embodiments, the circuit further includes an audio input module, the positive pole of the audio input module is electrically connected to the first audio input terminal of the speech recognition module, and the negative pole of the audio input module is electrically connected to the second audio input terminal of the speech recognition module.

[0009] In some embodiments, the circuit further includes an audio output module, the positive pole of the audio output module is electrically connected to the first audio output terminal of the speech recognition module, and the negative pole of the audio output module is electrically connected to the second audio output terminal of the speech recognition module.

[0010] In some embodiments, the step-down module includes a first adjustable step-down unit and a second adjustable step-down unit, the positive output terminal of the first adjustable step-down unit is electrically connected to the first voltage input terminal of the relay module, and the positive output terminal of the second adjustable step-down unit is electrically connected to the second voltage input terminal of the relay module.

[0011] In some embodiments, the positive pole of the input end of the first adjustable step-down unit is electrically connected to the positive pole of the output end of the input power module, the negative pole of the input end of the first adjustable step-down unit is electrically connected to the negative pole of the output end of the input power module, the positive pole of the input end of the second adjustable step-down unit is electrically connected to the positive pole of the output end of the input power module, and the negative pole of the input end of the second adjustable step-down unit is electrically connected to the negative pole of the output end of the input power module.

[0012] In some embodiments, the relay module further includes a first switch and a second switch, the first switch is electrically connected to the first voltage input terminal, the second switch is electrically connected to the second voltage input terminal, and the control signal terminal is electrically connected to the first switch and the second switch.

[0013] In some embodiments, the adjustable step-down unit includes a knob and a variable resistance unit, and the knob is electrically connected to a control end of the variable resistance unit.

[0014] According to the electrically controlled dimming glass of the second embodiment of the present utility model, the electrically controlled dimming glass includes the power management circuit described in the embodiment of the first embodiment.

[0015] The power management circuit and electrically controlled dimming glass according to the embodiments of the present invention have at least the following beneficial effects: the power management circuit realizes voltage adjustment through the step-down module, outputs multiple different step-down voltage signals through the output ends of multiple adjustable step-down units, realizes the controlled output of multiple voltages through the relay module and the voice recognition module, and outputs the target voltage signal through the output power module, thereby realizing the output voltage adjustment of the DC power supply through voice control, thereby improving the intelligence level of the electrically controlled dimming glass.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 A module diagram of a power management circuit provided by an embodiment of the present utility model;

[0019] Figure 2 Another module diagram of the power management circuit provided by an embodiment of the present utility model;

[0020] Figure 3 A schematic diagram of the electrically controlled dimming glass provided in an embodiment of the present utility model. DETAILED DESCRIPTION

[0021] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0022] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0023] In the description of this utility model, "several" means more than one, "plurality" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of the terms "first" and "second" is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0024] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0025] In the description of the present invention, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0026] The power management circuit and electrically controlled dimming glass provided in the embodiments of the present application are specifically described through the following embodiments. First, the power management circuit in the embodiments of the present application is described.

[0027] See also Figure 1 , the power management circuit provided by the embodiment of the present application includes:

[0028] Input power module 100;

[0029] The step-down module 200 includes a plurality of adjustable step-down units 210. The input end of the adjustable step-down unit is electrically connected to the input power module 100 to receive the power voltage signal output by the input power module 100. After receiving the power voltage signal, the step-down module 200 outputs a plurality of different step-down voltage signals through the output ends of the plurality of adjustable step-down units 210.

[0030] The speech recognition module 300 includes a signal output terminal 310 , and the speech recognition module 300 outputs a voltage control signal through the signal output terminal 310 ;

[0031] The relay module 400 includes a common voltage output terminal 410, a plurality of voltage input terminals 420, and a control signal terminal 430. The voltage input terminal 420 is electrically connected to the output terminal of the adjustable step-down unit 210, and the control signal terminal 430 is electrically connected to the signal output terminal 310. After receiving the voltage control signal, the relay module 400 outputs a step-down voltage signal in response to the voltage control signal through the common voltage output terminal 410.

[0032] The output power module 500 is electrically connected to the common voltage output terminal 410 of the relay module 400 , and the target voltage signal is outputted through the output power module 500 .

[0033] It will be appreciated that the input power module 100 provides the initial power supply voltage signal for the power management circuit. The input power module 100 can be a DC power adapter, for example, a 20V1A DC power adapter, which provides the circuit with a power supply voltage signal of 20 volts and 1 ampere. A battery pack consisting of one or more batteries, such as a lithium battery pack, can also be used to provide the DC voltage and current required by the power management circuit. The voltage and current specifications of the input power module 100 can be adjusted according to the specific requirements of the circuit and are not limited in the present embodiment.

[0034] Exemplarily, the step-down module 200 reduces the higher voltage power supply signal provided by the input power module 100 to a voltage level suitable for use with the electrically controlled dimming glass. This is achieved through multiple adjustable step-down units 210 within the step-down module 200. The input of each adjustable step-down unit 210 is electrically connected to the input power module 100 and receives the power supply voltage signal from the input power module 100. The adjustable step-down unit 210 can be designed as an adjustable linear regulator or a switching regulator. Each adjustable step-down unit 210 includes an adjustment mechanism, such as a potentiometer or a digital control interface, that can independently adjust the output of a stepped-down voltage signal of different voltage values. Each adjustable step-down unit 210 can be independently adjusted, thereby outputting stepped-down voltage signals of different voltage values.

[0035] Exemplarily, the adjustable buck unit 210 can use a switching regulator, such as the adjustable buck regulator LM2596S-ADJ, which can provide an adjustable output voltage from a minimum of 1.25V to a maximum of 37V. The output voltage of the adjustable buck unit 210 can be easily set by adjusting an external resistor or potentiometer.

[0036] It is understandable that the voice recognition module 300 is responsible for receiving and recognizing the user's voice commands, and outputting corresponding voltage control signals through the signal output terminal 310 according to these commands, and outputting the voltage control signals to the relay module 400 to adjust the output voltage.

[0037] In some embodiments, the voice recognition module 300 may also include a microphone array, a signal processing unit, a voice recognition engine, a control logic unit, etc. The microphone array is used to capture the user's voice commands, and the signal processing unit is used to pre-process the captured voice signal, such as noise reduction, and then the voice recognition engine is used to recognize and analyze the pre-processed voice signal to determine the user's commands. The control logic unit generates a corresponding voltage control signal according to the recognition result, which can automatically recognize the user's voice commands, thereby automatically adjusting the transparency of the connected electrically controlled dimming glass, and providing an intelligent user experience.

[0038] For example, the voice recognition module 300 can use the offline voice recognition control module SU-03T, which can provide the function of voice recognition without relying on a network connection. Users can customize voice recognition commands and corresponding action instructions through the official website according to their needs. At the same time, it has a speaker output function, which can play voice feedback or prompt sounds to enhance the user interaction experience. A software development kit (SDK) is provided to facilitate users to carry out secondary development and firmware customization. Users can generate and burn firmware as needed to achieve specific functions and voice commands.

[0039] It will be appreciated that the relay module 400 receives voltage control signals from the voice recognition module 300 and, based on these signals, controls the circuit between the voltage input terminal 420 and the common voltage output terminal 410, thereby outputting the reduced voltage signal desired by the user. The common voltage output terminal 410 is the output port of the relay module 400, used to provide the selected reduced voltage signal. The voltage input terminal 420 is the input port of the relay module 400, connected to the output terminal of the adjustable step-down unit 210. Each voltage input terminal 420 represents a different voltage level. The control signal terminal 430 is the control port of the relay module 400, receiving the voltage control signal from the signal output terminal 310 of the voice recognition module 300.

[0040] For example, the control signal terminal 430 receives a voltage control signal from the voice recognition module 300, and the control logic inside the relay module 400 controls the connection and disconnection between the corresponding voltage input terminal 420 and the common voltage output terminal 410 according to the received signal. When a voltage input terminal 420 is selected and connected, the corresponding step-down voltage signal will be output through the common voltage output terminal 410.

[0041] It can be understood that the output power module 500 is a component that ultimately provides the regulated voltage to the electrically controlled dimming glass or other loads. It is connected to the common voltage output terminal 410 of the relay module 400 to output the target voltage signal. It can also include additional voltage stabilization or filtering functions to ensure that the load equipment obtains high-quality power supply.

[0042] The power management circuit provided in the embodiment of the present utility model can accurately control the output voltage to meet the specific needs of electrically controlled dimming glass or other loads, provides a variety of adjustable voltage options, realizes automated operation through voice control, reduces manual intervention, and outputs the target voltage signal through the output power module, thereby realizing the output voltage adjustment of the DC power supply through voice control, thereby improving the intelligence level of electrically controlled dimming glass.

[0043] In some embodiments, the step-down module 200 also includes a power supply step-down unit, and the voice recognition module 300 also includes a power supply terminal and a ground terminal. The positive pole of the input terminal of the power supply step-down unit is electrically connected to the positive pole of the output terminal of the input power module 100, the negative pole of the input terminal of the power supply step-down unit is electrically connected to the negative pole of the output terminal of the input power module 100, the positive pole of the output terminal of the power supply step-down unit is electrically connected to the power supply terminal, and the negative pole of the output terminal of the power supply step-down unit is electrically connected to the ground terminal.

[0044] See also Figure 2 , the power supply step-down unit is used to reduce the input power supply voltage signal to 5 volts for use by the voice recognition module 300. The voice recognition module 300 also includes a power supply terminal and a ground terminal, the power supply terminal is the first pin terminal (+5V), and the ground terminal is the second pin terminal (GND). The positive input terminal (first pin terminal) of the power supply step-down unit is electrically connected to the positive output terminal of the input power module 100, and the negative input terminal (second pin terminal) of the power supply step-down unit is electrically connected to the negative output terminal of the input power module 100, for receiving the output voltage of the input power module 100. The positive output terminal (third pin terminal) of the power supply step-down unit is electrically connected to the power supply terminal (+5V), and the negative output terminal (fourth pin terminal) of the power supply step-down unit is electrically connected to the ground terminal (GND), for outputting the adjusted 5 volt voltage to ensure that the voice recognition module 300 can operate at an appropriate voltage and avoid damage caused by voltage mismatch.

[0045] In some embodiments, the power management circuit also includes a display module, the first end of the display module is electrically connected to the positive output terminal of the power supply step-down unit, the second end of the display module is electrically connected to the negative output terminal of the power supply step-down unit, and the third end of the display module is electrically connected to the output power module 500.

[0046] For example, see Figure 2The display module uses a digital voltmeter to provide users with visual information about the current target voltage output by the power management circuit. The first terminal (V+) of the display module is electrically connected to the positive output terminal of the power supply step-down unit, and the second terminal (V-) is electrically connected to the negative output terminal of the power supply step-down unit to receive the voltage output by the power supply step-down unit. The third terminal (SIG) of the display module is electrically connected to the positive output terminal of the output power module 500. The circuitry within the display module converts the received voltage signal into a digital signal. The processed digital signal drives a display module, such as a liquid crystal display (LCD) or light-emitting diode (LED) display, to display the current voltage.

[0047] In some embodiments, the circuit further includes an audio input module, the positive electrode of the audio input module is electrically connected to the first audio input terminal of the speech recognition module 300, and the negative electrode of the audio input module is electrically connected to the second audio input terminal of the speech recognition module 300.

[0048] For example, see Figure 2 The audio input module may include a microphone, a signal amplification circuit, a signal processing circuit, etc. The microphone is used to capture the user's voice commands, the signal amplification circuit is used to amplify the weak signals captured by the microphone, and the signal processing circuit may include a filter, a preprocessor, etc. to optimize signal quality. The positive electrode (first pin end) of the audio input module is electrically connected to the first audio input terminal (ninth pin end MIC+) of the voice recognition module 300, and the negative electrode (second pin end) of the audio input module is electrically connected to the second audio input terminal (eighth pin end MIC-) of the voice recognition module 300.

[0049] In some embodiments, the circuit further includes an audio output module, the positive electrode of the audio output module is electrically connected to the first audio output terminal of the voice recognition module, and the negative electrode of the audio output module is electrically connected to the second audio output terminal of the voice recognition module.

[0050] For example, see Figure 2 The audio output module converts the audio signals generated by the voice recognition module (such as voice command confirmation, error prompts, or status information) into sound, providing auditory feedback to the user. The positive electrode (first pin end) of the audio output module is electrically connected to the first audio output terminal (pin 18 SPK+) of the voice recognition module, and the negative electrode (second pin end) of the audio output module is electrically connected to the second audio output terminal (pin 17 SPK-) of the voice recognition module.

[0051] See Figure 2In some embodiments, the step-down module includes a first adjustable step-down unit and a second adjustable step-down unit. The positive output terminal (third pin) of the first adjustable step-down unit is electrically connected to the first voltage input terminal (sixth pin NO) of the relay module, and the positive output terminal (third pin) of the second adjustable step-down unit is electrically connected to the second voltage input terminal (ninth pin NO) of the relay module. The negative output terminal (fourth pin) of the first adjustable step-down unit is electrically connected to the negative terminal of the output power module.

[0052] See Figure 2 In some embodiments, the positive input terminal (first pin end) of the first adjustable step-down unit is electrically connected to the positive output terminal of the input power module, the negative input terminal (second pin end) of the first adjustable step-down unit is electrically connected to the negative output terminal of the input power module, the positive input terminal (first pin end) of the second adjustable step-down unit is electrically connected to the positive output terminal of the input power module, and the negative input terminal (second pin end) of the second adjustable step-down unit is electrically connected to the negative output terminal of the input power module.

[0053] In some embodiments, the relay module further includes a first switch and a second switch, wherein the first switch is electrically connected to the first voltage input terminal, the second switch is electrically connected to the second voltage input terminal, and the control signal terminal is electrically connected to the first switch and the second switch. Based on a control signal from the voice recognition module, the first switch or the second switch is selectively opened or closed, and the first voltage input terminal and the second voltage input terminal are connected or disconnected, thereby controlling the voltage output of the output power module.

[0054] Exemplarily, the first switch or the second switch may be an electromagnetic relay, a solid-state relay, or other types of switching devices. When the first switch or the second switch is closed, the corresponding voltage input terminal is connected to the common voltage output terminal 410 to output a corresponding voltage signal.

[0055] In some embodiments, the adjustable step-down unit includes a knob and a variable resistor unit. The knob is electrically connected to the control terminal of the variable resistor unit, allowing the user to manually adjust the output voltage. The user rotates the knob to select the desired voltage level. Adjusting the knob causes the resistance value of the variable resistor unit to change. This change in resistance value affects the voltage divider ratio of the step-down circuit, thereby adjusting the output voltage.

[0056] It is understood that the power management circuit provided in the embodiments of the present application provides different voltage levels through the output power module to adjust the transparency of the electrically controlled dimming glass. When the step-down module includes a first adjustable step-down unit and a second adjustable step-down unit, the three states of opaque, translucent, and transparent can be achieved, thereby improving the intelligence level of the electrically controlled dimming glass and facilitating operation and control. The knob of the adjustable step-down unit allows the user to adjust the required output voltage value according to the different operating voltage requirements caused by different electrochromic materials and designs, thus providing wide adaptability and allowing the current output voltage value to be viewed on the display module. The step-down module can include multiple adjustable step-down units to achieve the effect of gradually adjusting the transparency state.

[0057] See Figure 2 The twentieth pin end (TX1) of the voice recognition module is electrically connected to the second pin end (RXD) of the relay module, and the twenty-first pin end (RX1) of the voice recognition module is electrically connected to the third pin end (TXD) of the relay module to ensure that data can be transmitted to each other. According to the instructions sent by the voice recognition module, the first adjustable step-down unit and the second adjustable step-down unit are controlled to be on and off corresponding to each other. The input power supply module provides power supply voltage to the circuit, and the power supply step-down unit reduces the power supply voltage to 5V for use by the voice recognition module and the display module. The relay module also includes a first pin end (VCC) electrically connected to the nineteenth pin end (VCC) of the voice recognition module, a fourth pin end (GND) of the relay module is electrically connected to the twenty-second pin end (GND) of the voice recognition module, and the relay module also includes a seventh pin end (COM) and an eighth pin end (NC), and also includes a tenth pin end (COM) and an eleventh pin end (NC). The seventh pin end (COM) and the tenth pin end (COM) are electrically connected to the positive pole of the output power supply module. The speech recognition module also includes a third pin terminal (3V3), a fourth pin terminal (B8), a fifth pin terminal (B7), a sixth pin terminal (B6), a seventh pin terminal (B2), a tenth pin terminal (B3), an eleventh pin terminal (A27), a twelfth pin terminal (A26), a thirteenth pin terminal (A25), a fourteenth pin terminal (B0), a fifteenth pin terminal (B1) and a sixteenth pin terminal (GND).

[0058] See also Figure 3 The present application also provides an adjustable electrically controlled glass, including the aforementioned power management circuit. The specific implementation of the adjustable electrically controlled glass is substantially the same as that of the aforementioned power management circuit and will not be further described here. The adjustable electrically controlled glass may also be configured with other functional modules, provided that the requirements of the present application are met.

[0059] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various modifications can be made within the scope of knowledge possessed by a person skilled in the art without departing from the spirit of the present invention. In addition, the embodiments of the present invention and the features of the embodiments can be combined with each other unless there is a conflict.

Claims

1. A power management circuit, characterized in that: include: Input power module; a step-down module, the step-down module comprising a plurality of adjustable step-down units, the input end of the adjustable step-down unit being electrically connected to the input power module to receive the power voltage signal outputted by the input power module, wherein, after receiving the power voltage signal, the step-down module outputs a plurality of different step-down voltage signals through the output ends of the plurality of adjustable step-down units; A voice recognition module, the voice recognition module including a signal output terminal, the voice recognition module outputting a voltage control signal via the signal output terminal; A relay module, the relay module comprising a common voltage output terminal, a plurality of voltage input terminals and a control signal terminal, the voltage input terminal being electrically connected to the output terminal of the adjustable step-down unit, the control signal terminal being electrically connected to the signal output terminal, wherein, after receiving the voltage control signal, the relay module outputs a step-down voltage signal in response to the voltage control signal through the common voltage output terminal; An output power module is electrically connected to the common voltage output terminal of the relay module, and a target voltage signal is outputted through the output power module.

2. The power management circuit according to claim 1, wherein: The step-down module also includes a power supply step-down unit, and the voice recognition module also includes a power supply terminal and a ground terminal. The positive pole of the input terminal of the power supply step-down unit is electrically connected to the positive pole of the output terminal of the input power module, the negative pole of the input terminal of the power supply step-down unit is electrically connected to the negative pole of the output terminal of the input power module, the positive pole of the output terminal of the power supply step-down unit is electrically connected to the power supply terminal, and the negative pole of the output terminal of the power supply step-down unit is electrically connected to the ground terminal.

3. The power management circuit according to claim 2, wherein: The power management circuit also includes a display module, a first end of the display module is electrically connected to the positive output terminal of the power supply step-down unit, a second end of the display module is electrically connected to the negative output terminal of the power supply step-down unit, and a third end of the display module is electrically connected to the output power module.

4. The power management circuit according to claim 1, wherein: The circuit further includes an audio input module, wherein the positive electrode of the audio input module is electrically connected to the first audio input terminal of the voice recognition module, and the negative electrode of the audio input module is electrically connected to the second audio input terminal of the voice recognition module.

5. The power management circuit according to claim 1, wherein: The circuit further includes an audio output module, wherein the positive electrode of the audio output module is electrically connected to the first audio output terminal of the voice recognition module, and the negative electrode of the audio output module is electrically connected to the second audio output terminal of the voice recognition module.

6. The power management circuit according to claim 1, wherein: The step-down module includes a first adjustable step-down unit and a second adjustable step-down unit. The positive pole of the output end of the first adjustable step-down unit is electrically connected to the first voltage input end of the relay module, and the positive pole of the output end of the second adjustable step-down unit is electrically connected to the second voltage input end of the relay module.

7. The power management circuit according to claim 6, wherein: The positive pole of the input end of the first adjustable step-down unit is electrically connected to the positive pole of the output end of the input power module, the negative pole of the input end of the first adjustable step-down unit is electrically connected to the negative pole of the output end of the input power module, the positive pole of the input end of the second adjustable step-down unit is electrically connected to the positive pole of the output end of the input power module, and the negative pole of the input end of the second adjustable step-down unit is electrically connected to the negative pole of the output end of the input power module.

8. The power management circuit according to claim 6, wherein: The relay module further includes a first switch and a second switch, the first switch is electrically connected to the first voltage input terminal, the second switch is electrically connected to the second voltage input terminal, and the control signal terminal is electrically connected to the first switch and the second switch.

9. The power management circuit according to claim 1, wherein: The adjustable step-down unit includes a knob and a variable resistance unit, and the knob is electrically connected to a control end of the variable resistance unit.

10. An electrically controlled dimming glass, characterized in that: The power management circuit comprises the power management circuit according to any one of claims 1 to 9.

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