Voltage control circuit, voltage control method, air conditioning equipment and storage medium

Abstract

The invention provides a voltage control circuit, a voltage control method, air conditioning equipment and a storage medium, the voltage control circuit comprises a main control module, a voltage boosting module, a piezoelectric resonance control module, a stepless voltage regulation module and an inversion module, the main control module receives input voltage and turns off or outputs power supply voltage through an output end; the voltage boosting module regulates the power supply voltage to obtain an output voltage; the piezoelectric resonance control module outputs a waveform signal and adjusts the duty ratio of the waveform signal; the stepless voltage regulation module performs stepless voltage regulation processing on the output voltage according to the waveform signal duty ratio; the input side of the inversion module is connected to the output end of the voltage boosting module and the piezoelectric resonance control module, and the output side of the inversion module outputs alternating voltage to the piezoelectric load so that the piezoelectric load can vibrate under the alternating voltage. According to the invention, the main control module stops outputting the power supply voltage when the piezoelectric resonance control module is started, so that the situation that the output voltage drops in the starting process can be prevented.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, and in particular to a voltage control circuit and a voltage control method, an air conditioning device and a storage medium. Background Art

[0002] At present, in the relevant technology, the existing air-conditioning indoor unit mainly uses a stepper motor to drive the swing fan blades to change the air outlet direction of the air outlet and adjust the distribution of the wind field. However, the air outlet of the current air outlet is still relatively strong and the wind feeling cannot be adjusted. Users are prone to feel uncomfortable and the experience is poor.

[0003] In this regard, some air-conditioning indoor units use piezoelectric resonance to achieve active wind field control. In the application scenario of dynamic adjustment, the step-by-step adjustment method has low cost and simple control; however, since this solution is hard-on and hard-off, problems such as voltage and current fluctuations will occur during the switching process, which will lead to a deterioration in the dynamic control effect of the active wind field. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a voltage control circuit and a voltage control method, an air conditioning device and a storage medium, aiming to improve the dynamic control effect of an active wind farm.

[0005] In the first aspect, an embodiment of the present application provides a voltage control circuit, comprising: a main control module, used to receive an input voltage and shut down or output a power supply voltage through an output end; a voltage boosting module, connected to the output end of the main control module, used to regulate the power supply voltage to obtain an output voltage; a piezoelectric resonance control module, connected to the main control module, used to output a waveform signal and adjust the duty cycle of the waveform signal; wherein, during the startup of the piezoelectric resonance control module, the main control module stops outputting the power supply voltage; a stepless voltage regulation module, connected between the output end of the piezoelectric resonance control module and the voltage boosting module, used to perform stepless voltage regulation on the output voltage according to the duty cycle of the waveform signal; an inverter module, the input side of which is connected to the output end of the voltage boosting module and the piezoelectric resonance control module, and the output side is used to output an AC voltage to a piezoelectric load so that the piezoelectric load vibrates under the AC voltage.

[0006] According to some embodiments of the present application, the main control module includes a main control chip and a first switch tube, the main control chip is connected to the control end of the first switch tube, the input end of the first switch tube is used to connect to the input voltage, and the output end of the first switch tube is used to shut down or output the power supply voltage.

[0007] According to some embodiments of the present application, the main control module further includes a second switch tube, the main control chip is connected to the control end of the second switch tube, and the input end of the second switch tube is connected to the control end of the first switch tube.

[0008] According to some embodiments of the present application, the voltage boost module includes a boost chip and a third switch tube, the input end of the third switch tube is connected to the output end of the main control module, the output end of the third switch tube is connected to the enable end of the boost chip, and the piezoelectric resonance control module is connected to the control end of the third switch tube and is used to control the conduction or shutdown of the third switch tube.

[0009] According to some embodiments of the present application, the voltage boost module also includes a peripheral boost circuit, which includes a fourth switch tube, a first inductor and a first capacitor, the first inductor is respectively connected to the fourth switch tube and the first capacitor, and the boost chip is connected to the control end of the fourth switch tube and is used to control the conduction or shutdown of the fourth switch tube.

[0010] According to some embodiments of the present application, a fifth switch tube is further included, wherein the input end of the fifth switch tube is connected to the output end of the voltage boosting module and the stepless voltage regulation module, the output end of the fifth switch tube is connected to the ground end, and the piezoelectric resonance control module is connected to the control end of the fifth switch tube and is used to control the conduction or shutdown of the fifth switch tube.

[0011] According to some embodiments of the present application, the stepless voltage regulation module includes an integral circuit unit, a voltage following unit and a current regulating unit, the voltage input end of the voltage following unit is connected to the piezoelectric resonance control module through the integral circuit unit, and the voltage output end of the voltage following unit is connected to the voltage boosting module through the current regulating unit.

[0012] According to some embodiments of the present application, the voltage follower unit includes one of the following:

[0013] An operational amplifier, wherein a voltage input terminal of the operational amplifier is connected to the integration circuit unit, and a voltage output terminal of the operational amplifier is connected to a voltage feedback terminal and is also connected to the current regulation unit;

[0014] An isolation chip, wherein a voltage input terminal of the isolation chip is connected to the integration circuit unit, and a voltage output terminal of the isolation chip is connected to the current regulation unit.

[0015] According to some embodiments of the present application, the current regulating unit includes a first resistor, a second resistor and a third resistor, one end of the first resistor is connected to the output end of the voltage boosting module, and the other end is connected to the ground end through the second resistor, and the common end of the first resistor and the second resistor is also connected to the voltage output end of the voltage following unit through the third resistor.

[0016] According to some embodiments of the present application, the integration circuit unit includes a fourth resistor and a fourth capacitor, one end of the fourth resistor is connected to the output end of the piezoelectric resonance control module, and the other end is connected to the ground end through the fourth capacitor, and the common end of the fourth resistor and the fourth capacitor is also connected to the voltage input end of the voltage follower unit.

[0017] According to some embodiments of the present application, the inverter module includes a pulse cluster generating and amplifying unit and a coupling unit. The pulse cluster generating and amplifying unit is connected to the output end of the voltage boosting module, and is used to generate a pulse cluster signal, and performs signal amplification processing on the pulse cluster signal according to the output voltage to obtain a high-voltage pulse cluster signal, wherein the amplitude of the high-voltage pulse cluster signal is the output voltage; the coupling unit is connected to the output end of the pulse cluster generating and amplifying unit, and is used to filter and transform the high-voltage pulse cluster signal to couple to form a full-cycle sinusoidal AC voltage.

[0018] According to some embodiments of the present application, the pulse cluster generating amplification unit includes a driving circuit, a first switching amplification branch and a second switching amplification branch, the driving circuit is respectively connected to the first switching amplification branch and the second switching amplification branch, the first switching amplification branch is used to output a first DC voltage signal, and the second switching amplification branch is used to output a second DC voltage signal, wherein a 180° phase difference is formed between the first DC voltage signal and the second DC voltage signal.

[0019] According to some embodiments of the present application, the coupling unit includes a first filter branch and a second filter branch, the first filter branch is connected to the first switch amplifier branch, and the second filter branch is connected to the second switch amplifier branch, and the coupling unit is used to obtain a full-cycle AC voltage signal according to the coupling of the first DC voltage signal and the second DC voltage signal.

[0020] In a second aspect, an embodiment of the present application provides an air conditioning device, comprising a piezoelectric load and a voltage control circuit as described in the first aspect, wherein the piezoelectric load is arranged at an air outlet of the air conditioning device, and the voltage control circuit is connected to the piezoelectric load.

[0021] In a third aspect, an embodiment of the present application provides a voltage control method, which is applied to the voltage control circuit as described in the first aspect, and the control method includes: the main control module starts the piezoelectric resonance control module in response to a start-up instruction; during the startup of the piezoelectric resonance control module, the main control module stops outputting the supply voltage; after the startup of the piezoelectric resonance control module is completed, the voltage boosting module is started; the piezoelectric resonance control module adjusts the duty cycle of the waveform signal output to the stepless voltage regulation module, so that the stepless voltage regulation module performs stepless voltage regulation on the output voltage according to the duty cycle.

[0022] According to some embodiments of the present application, starting the voltage boosting module includes: the main control module outputting the supply voltage to the voltage boosting module; and the piezoelectric resonance control module sending an enable signal to the voltage boosting module to start the voltage boosting module.

[0023] According to some embodiments of the present application, the piezoelectric resonance control module adjusts the duty cycle of the waveform signal output to the stepless voltage regulation module, including one of the following: in the startup stage of the output voltage, the piezoelectric resonance control module adjusts the output waveform signal to the stepless voltage regulation module, and reduces the duty cycle of the waveform signal at a first adjustment rate so that the output voltage rises from the start-up voltage to the start-up voltage; in the adjustment stage of the output voltage, the main control module determines the corresponding target output voltage according to the received voltage adjustment instruction, and determines the target duty cycle according to the target output voltage, outputs the waveform signal of the target duty cycle to the stepless voltage regulation module through the piezoelectric resonance control module, and adjusts the duty cycle of the waveform signal at a second adjustment rate so that the output voltage is adjusted to the target output voltage; in the stop stage of the output voltage, the main control module receives a shutdown instruction, and increases the duty cycle of the waveform signal at a third adjustment rate through the piezoelectric resonance control module so that the output voltage is adjusted to the stop voltage, and the main control module stops outputting the supply voltage.

[0024] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are used to execute the voltage control method as described in the third aspect.

[0025] According to the technical solution of the embodiment of the present application, at least the following beneficial effects are achieved: the embodiment of the present application includes a main control module, a voltage boosting module, a piezoelectric resonance control module, a stepless voltage regulation module and an inverter module, wherein the main control module is used to receive an input voltage and shut down or output a power supply voltage through an output end; the voltage boosting module is connected to the output end of the main control module, and is used to perform voltage regulation on the power supply voltage to obtain an output voltage; the piezoelectric resonance control module is connected to the main control module, and is used to output a waveform signal and adjust the duty cycle of the waveform signal; wherein, during the startup of the piezoelectric resonance control module, the main control module stops outputting the power supply voltage; the stepless voltage regulation module is connected between the output end of the piezoelectric resonance control module and the voltage boosting module, and is used to perform stepless voltage regulation on the output voltage according to the duty cycle of the waveform signal; the input side of the inverter module is connected to the output end of the voltage boosting module and the piezoelectric resonance control module, and the output side is used to output an AC voltage to a piezoelectric load, so that the piezoelectric load vibrates under the AC voltage. Since the main control module stops outputting the power supply voltage when the piezoelectric resonance control module is turned on, it can prevent the output voltage from dropping during the startup process. In addition, the embodiment of the present application can also output any bus voltage by adjusting the duty cycle. During the gear switching process, the dynamic stepless voltage regulation method plays a current buffering role, which solves the problem of voltage drop during gear switching, thereby improving the dynamic control effect of the active wind farm.

[0026] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide further understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0028] Figure 1 is a circuit structure diagram of a voltage control circuit provided by an embodiment of the present application;

[0029] Figure 2 is a circuit structure diagram of a voltage control circuit provided by another embodiment of the present application;

[0030] Figure 3 is a schematic diagram of the circuit structure of a main control module provided by an embodiment of the present application;

[0031] Figure 4 is a circuit structure diagram of a main control module provided in another embodiment of the present application;

[0032] Figure 5 is a circuit structure diagram of a main control module provided in another embodiment of the present application;

[0033] Figure 6 It is a circuit diagram of a stepless voltage regulation module and a voltage boost module part circuit provided in an embodiment of the present application;

[0034] Figure 7 is a structural schematic diagram of an air conditioning device provided by an embodiment of the present application;

[0035] Figure 8 is a schematic diagram of the structure of a piezoelectric load provided by an embodiment of the present application;

[0036] Fig. 9 is a schematic diagram of a system architecture platform for executing a voltage control method provided by an embodiment of the present application;

[0037] Fig.10 is a flow chart of a voltage control method provided by an embodiment of the present application;

[0038] Fig.11 yes Fig.10 A specific flow chart of step S130 of the voltage control method provided in the embodiment;

[0039] Fig.12 yes Fig.10 A specific flow chart of step S140 of the voltage control method provided in the embodiment;

[0040] Fig.13 yes Fig.10 A specific flow chart of step S140 of the voltage control method provided in the embodiment;

[0041] Fig.14 yes Fig.10 A specific flow chart of step S140 of the voltage control method provided in the embodiment;

[0042] Fig.15 is a timing diagram of a voltage control circuit provided by an embodiment of the present application;

[0043] Fig.16 This is a flow chart of a voltage control circuit provided by an embodiment of the present application. DETAILED DESCRIPTION

[0044] The embodiments of the present application are described in detail below, and 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 only used to explain the present application, and cannot be understood as limiting the present application.

[0045] In the description of the present application, it should be understood that descriptions involving orientation, 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, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the circuits or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0046] In the description of this application, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0047] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. 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 this application based on the specific content of the technical solution.

[0048] In some cases, for general air conditioning equipment, the wind direction is generally adjusted by setting swinging fan blades at the air outlet, and the swinging fan blades are generally driven by a stepper motor. However, it can only control the wind direction of the air outlet by driving the swinging fan blades, but cannot change the wind feeling of the air outlet. The wind output is particularly strong, which can easily cause a bad experience for users.

[0049] In this regard, some air conditioning equipment uses piezoelectric resonance to control the active wind field. In the application scenario of dynamic adjustment, the step-by-step adjustment method is low-cost and simple to control; however, since this solution is hard-on and hard-off, problems such as voltage and current fluctuations will occur during the switching process, which will lead to a deterioration in the dynamic control effect of the active wind field.

[0050] Based on the above situation, the embodiments of the present application propose a voltage control circuit and a voltage control method, an air conditioning device and a storage medium, aiming to improve the dynamic control effect of an active wind farm.

[0051] The embodiments of the present application are further described below in conjunction with the accompanying drawings.

[0052] like Figure 1 As shown, Figure 1 It is a circuit structure diagram of a voltage control circuit provided in one embodiment of the present application.

[0053] In one embodiment, the embodiment of the present application provides a voltage control circuit, which includes but is not limited to a main control module 100, a voltage boost module 200, a piezoelectric resonance control module 300, a stepless voltage regulation module 400 and an inverter module 500.

[0054] Specifically, the main control module 100 is used to receive an input voltage and shut off or output a power supply voltage through an output end; the voltage boosting module 200 is connected to the output end of the main control module 100, and is used to regulate the power supply voltage to obtain an output voltage; the piezoelectric resonance control module 300 is connected to the main control module 100, and is used to output a waveform signal and adjust the duty cycle of the waveform signal; wherein, during the startup of the piezoelectric resonance control module 300, the main control module 100 stops outputting the power supply voltage; the stepless voltage regulation module 400 is connected between the output end of the piezoelectric resonance control module 300 and the voltage boosting module 200, and is used to perform stepless voltage regulation on the output voltage according to the duty cycle of the waveform signal; the input side of the inverter module 500 is connected to the output end of the voltage boosting module 200 and the piezoelectric resonance control module 300, and the output side is used to output an AC voltage to the piezoelectric load 600, so that the piezoelectric load 600 vibrates under the AC voltage.

[0055] The embodiment of the present application can add a piezoelectric load 600 to the air outlet of the air-conditioning equipment, and use the vibration of the piezoelectric load 600 to disperse the outlet air of the air-conditioning equipment, thereby making the air outlet of the air-conditioning equipment softer and improving the comfort of air supply; in addition, the embodiment of the present application is also provided with a main control module 100, a voltage boost module 200, a piezoelectric resonance control module 300, a stepless voltage regulation module 400 and an inverter module 500, and the main control module 100 stops outputting the power supply voltage when the piezoelectric resonance control module 300 is turned on, thereby preventing the output voltage from dropping during the start-up process; in addition, the embodiment of the present application can also output any bus voltage by adjusting the duty cycle. During the gear switching process, the dynamic stepless voltage regulation method plays a current buffering role, which solves the problem of voltage drop during gear switching, thereby improving the dynamic control effect of the active wind field.

[0056] It is worth noting that regarding the installation position of the above-mentioned piezoelectric load 600, in addition to being installed at the air outlet of the air conditioning equipment to adjust the wind field distribution of the air outlet, it can also be set inside the air conditioning equipment as a power source for blowing air, and can also be set on other equipment that requires heat dissipation for heat dissipation.

[0057] It is understandable that the piezoelectric load 600 can be a piezoelectric ceramic sheet, which can be equipped with a variety of ceramic formulas to be made into ceramic sheet products for various applications. The piezoelectric ceramic sheet has the advantages of high sensitivity, low energy consumption, good reliability, good stability, high and low temperature resistance, long life, thin thickness, light weight, small size, and high voltage resistance.

[0058] It should be noted that the working principle of the piezoelectric ceramic is that when voltage is applied to the piezoelectric ceramic, the piezoelectric ceramic will produce mechanical deformation as the voltage and frequency change.

[0059] In one embodiment, the main control module 100 includes but is not limited to a main control chip 110 and a first switch tube Q1, the main control chip 110 is connected to the control end of the first switch tube Q1, the input end of the first switch tube Q1 is used to connect to the input voltage, and the output end of the first switch tube Q1 is used to shut down or output the power supply voltage.

[0060] It should be noted that the main control chip 110 can output a level signal to the first switch tube Q1. When the control end of the first switch tube Q1 receives a high level signal, the first switch tube Q1 is in an on state. When the control end of the first switch tube Q1 receives a low level signal, the first switch tube Q1 is in an off state.

[0061] Specifically, the main control module 100 further includes a second switch tube Q2 , the main control chip 110 is connected to the control end of the second switch tube Q2 , and the input end of the second switch tube Q2 is connected to the control end of the first switch tube Q1 .

[0062] It should be noted that the main control chip 110 can output a level signal to the first switch tube Q1 and the second switch tube Q2. When the control end of the second switch tube Q2 receives a high level signal, the second switch tube Q2 is in an on state. At this time, current will flow through the resistor R6 between the first switch tube Q1 and the second switch tube Q2, so that the control end of the first switch tube Q1 is at a high level, and then the first switch tube Q1 is in an on state. When the control end of the second switch tube Q2 receives a low level signal, the second switch tube Q2 is in an off state. At this time, current will not flow through the resistor R6 between the first switch tube Q1 and the second switch tube Q2, so the control end of the first switch tube Q1 is at a low level, and then the first switch tube Q1 is in an off state.

[0063] Specifically, the voltage boost module 200 includes but is not limited to a boost chip 210 and a third switch tube Q3, the input end of the third switch tube Q3 is connected to the output end of the main control module 100, the output end of the third switch tube Q3 is connected to the enable end of the boost chip 210, and the piezoelectric resonance control module 300 is connected to the control end of the third switch tube Q3 and is used to control the conduction or shutdown of the third switch tube Q3.

[0064] It should be noted that the piezoelectric resonance control module 300 can output a level signal to the third switch tube Q3. Therefore, when the third switch tube Q3 receives a high level signal, the third switch tube Q3 is in an on state, and when the third switch tube Q3 receives a low level signal, the third switch tube Q3 is in an off state.

[0065] Furthermore, when the third switch tube Q3 is in the on state, the input end of the third switch tube Q3 receives a high level output by the output end of the main control module 100, and the output end of the third switch tube Q3 outputs a high level to the enable end of the boost chip 210, and then the boost chip 210 starts working; when the third switch tube Q3 is in the off state, the boost chip 210 does not work.

[0066] Specifically, the voltage boost module 200 also includes a peripheral boost circuit, which includes but is not limited to a fourth switch tube Q4, a first inductor L1, and a first capacitor C1. The first inductor L1 is respectively connected to the fourth switch tube Q4 and the first capacitor C1. The boost chip 210 is connected to the control end of the fourth switch tube Q4 and is used to control the conduction and shutdown of the fourth switch tube Q4.

[0067] It should be noted that the boost chip 210 can output a level signal to the fourth switch tube Q4. Therefore, when the fourth switch tube Q4 receives a high level signal, the fourth switch tube Q4 is in an on state, and the DC voltage returns to the negative end of the power supply through the first inductor L1, the fourth switch tube Q4 and the impedance device, thereby charging the first inductor L1. When the fourth switch tube Q4 receives a low level signal, the fourth switch tube Q4 is in an off state, and the DC voltage flows through the first inductor L1 and the first capacitor C1 and returns to the negative end of the power supply, thereby discharging the first inductor L1 and charging the first capacitor C1.

[0068] It is understandable that when charging the first capacitor C1, a first unidirectional conductive device D1 can be set on the charging circuit of the first capacitor C1 to control the unidirectional conduction of the current of the voltage boosting module 200. At this time, the DC voltage returns to the negative terminal of the power supply through the first inductor L1, the first unidirectional conductive device D1 and the first capacitor C1, and charges the first capacitor C1 at the same time.

[0069] It is understandable that the Schottky diode can be used for the above-mentioned first unidirectional conductive device D1. Its biggest advantages are low impedance, small forward voltage drop and fast recovery speed. It is used in high-frequency and large-current rectification and power-down protection circuits. Rectifier diodes, diode thyristors, etc. can also be used. The type of the first unidirectional conductive device D1 can be selected according to actual needs and is not specifically limited here.

[0070] It is understandable that the first inductor L1 mentioned above refers to an inductor that can realize charging and discharging. Inductors are mainly divided into winding inductors, multilayer sheet inductors, and thin film inductors according to the process. Among them, the winding inductor can provide large current and high inductance. The larger the magnetic permeability of the magnetic core, the less winding for the same inductance, and the less winding can reduce the DC resistance; for the same size, the less winding can be thicker and the current can be increased; the multilayer sheet inductor is a non-winding inductor made of magnetic materials using multi-layer production technology. It uses ferrite paste to alternately stack and adopts sintering process to form an overall monolithic structure, with a closed magnetic circuit, so it has a magnetic shielding effect; the thin film inductor is an inductor made by vacuum thin film technology, with high reliability, easy integration and chip-type, very suitable for automated surface mounting technology, and due to its small size and good high-frequency characteristics. The type of the first inductor L1 mentioned above can be selected according to actual needs and is not specifically limited here.

[0071] It can be understood that the first capacitor C1 mentioned above refers to a capacitor that can be charged and discharged. The capacitors are mainly divided into aluminum electrolytic capacitors, ceramic capacitors, mica capacitors, etc. Among them, the aluminum electrolytic capacitors are characterized by large capacity and positive and negative polarity, which are suitable for power supply filtering or low-frequency circuits; the ceramic capacitors are characterized by small size, good heat resistance, low loss, high insulation resistance, but small capacity, which are suitable for high-frequency circuits; the mica capacitors are characterized by small dielectric loss, large insulation resistance, and small temperature coefficient, which are suitable for high-frequency circuits. The type of the first capacitor C1 mentioned above can be selected according to actual conditions and is no longer specifically limited here.

[0072] Specifically, the stepless voltage regulation module 400 includes but is not limited to an integration circuit unit 410, a voltage following unit 420 and a current regulation unit 430. The voltage input end of the voltage following unit 420 is connected to the piezoelectric resonance control module 300 through the integration circuit unit 410, and the voltage output end of the voltage following unit 420 is connected to the voltage boosting module 200 through the current regulation unit 430.

[0073] Furthermore, the voltage follower unit 420 includes an operational amplifier 421 , a voltage input terminal of the operational amplifier 421 is connected to the integration circuit unit 410 , a voltage output terminal of the operational amplifier 421 is connected to a voltage feedback terminal, and is also connected to the current regulation unit 430 .

[0074] It is understandable that the operational amplifier 421 mentioned above can be a general-purpose operational amplifier, a high-precision operational amplifier, or other operational amplifiers capable of voltage following. The operational amplifier does not amplify the signal, that is, the input voltage is equal to the output voltage. The embodiment of the present application does not specifically limit the structural type of the operational amplifier 421. The operational amplifier has the characteristics of high gain, high input and output resistance, good linearity, adjustable gain, versatility and low power consumption, and has a wide range of applications.

[0075] Specifically, the current regulating unit 430 includes a first resistor R1, a second resistor R2 and a third resistor R3, one end of the first resistor R1 is connected to the output end of the voltage boosting module 200, and the other end is connected to the ground end through the second resistor R2, and the common end of the first resistor R1 and the second resistor R2 is also connected to the voltage output end of the voltage following unit 420 through the third resistor R3.

[0076] Specifically, the integration circuit unit 410 includes a fourth resistor R4 and a fourth capacitor C4, one end of the fourth resistor R4 is connected to the output end of the piezoelectric resonance control module 300, and the other end is connected to the ground end through the fourth capacitor C4, and the common end of the fourth resistor R4 and the fourth capacitor C4 is also connected to the voltage input end of the voltage follower unit 420.

[0077] It should be noted that the stepless voltage regulation module 400 performs stepless voltage regulation on the initial output voltage according to the duty cycle D of the waveform signal output by the piezoelectric resonance control module 300, and outputs any bus voltage VIN by adjusting the duty cycle. Wherein, VFB is the feedback voltage of the boost chip 210 , that is, the voltage of the common terminal among the first resistor R1 , the second resistor R2 and the third resistor R3 , and VFB is a fixed value, and VP is the waveform amplitude of the target duty cycle output by the piezoelectric resonance control module 300 .

[0078] It is understandable that the above-mentioned waveform signal may be a square wave signal, a sine wave signal, a sawtooth wave signal, etc., and has a high level and a low level.

[0079] Specifically, the inverter module 500 includes but is not limited to a pulse cluster generating and amplifying unit 510 and a coupling unit 520. The pulse cluster generating and amplifying unit 510 is connected to the output end of the voltage boosting module 200, and is used to generate a pulse cluster signal, and amplify the pulse cluster signal according to the target output voltage to obtain a high-voltage pulse cluster signal, wherein the amplitude of the high-voltage pulse cluster signal is the target output voltage; the coupling unit 520 is connected to the output end of the pulse cluster generating and amplifying unit 510, and is used to filter and transform the high-voltage pulse cluster signal to couple to form a full-cycle sinusoidal AC voltage.

[0080] Specifically, the pulse cluster generating amplifying unit 510 includes a driving circuit 511, a first switching amplifying branch 512 and a second switching amplifying branch 513. The driving circuit 511 is respectively connected to the first switching amplifying branch 512 and the second switching amplifying branch 513. The first switching amplifying branch 512 is used to output a first DC voltage signal, and the second switching amplifying branch 513 is used to output a second DC voltage signal, wherein a 180° phase difference is formed between the first DC voltage signal and the second DC voltage signal.

[0081] Specifically, the coupling unit 520 includes a first filter branch 521 and a second filter branch 522. The first filter branch 521 is connected to the first switch amplifier branch 512, and the second filter branch 522 is connected to the second switch amplifier branch 513. The coupling unit 520 is used to obtain a full-cycle AC voltage signal according to the coupling of the first DC voltage signal and the second DC voltage signal.

[0082] Further, the first switch amplifying branch 512 includes but is not limited to the sixth switch tube Q6 and the seventh switch tube Q7, the second switch amplifying branch 513 includes but is not limited to the eighth switch tube Q8 and the ninth switch tube Q9, the collector of the sixth switch tube Q6 is connected to the emitter of the seventh switch tube Q7, the collector of the eighth switch tube Q8 is connected to the emitter of the ninth switch tube Q9, the first filter branch 521 is connected between the sixth switch tube Q6 and the seventh switch tube Q7, and the second filter branch 422 is connected between the eighth switch tube Q8 and the ninth switch tube Q9. When the seventh switch tube Q7 and the eighth switch tube Q8 are turned on and the sixth switch tube Q6 and the ninth switch tube Q9 are turned off, the second switch amplifying branch 513 outputs the signal of the second half cycle, and when the sixth switch tube Q6 and the ninth switch tube Q9 are turned on and the seventh switch tube Q7 and the eighth switch tube Q8 are turned off, the first switch amplifying branch 512 outputs the signal of the first half cycle.

[0083] Furthermore, the first filter branch 521 includes but is not limited to a first filter inductor L2 and a first filter capacitor C2, the second filter branch 522 includes but is not limited to a second filter inductor L3 and a second filter capacitor C3, one end of the first filter capacitor C2 is connected to the first filter inductor L2, and the other end is grounded, one end of the second filter capacitor C3 is connected to the second filter inductor L3, and the other end is grounded, the entire coupling unit 520 is used to filter out interference signals in the circuit, and to differentially couple the DC voltage signals from the first switch amplifier branch 512 and the second switch amplifier branch 513 to convert them into AC voltage signals for output.

[0084] It is understandable that the first filter inductor L2 and the second filter inductor L3 mentioned above refer to inductors with filtering functions. Inductors are mainly divided into winding inductors, multilayer sheet inductors, and thin film inductors according to the process. Among them, the winding inductor can provide large current and high inductance. The larger the magnetic permeability of the magnetic core, the less winding is required for the same inductance, and less winding can reduce the DC resistance; for the same size, less winding can be thicker and the current can be increased; the multilayer sheet inductor is a non-winding inductor made of magnetic materials using multi-layer production technology. It uses ferrite paste to alternately stack and adopts sintering technology to form an overall monolithic structure, with a closed magnetic circuit, so it has a magnetic shielding effect; the thin film inductor is an inductor made by vacuum thin film technology, with high reliability, easy integration and chip-type, very suitable for automated surface mounting technology, and due to its small size and good high-frequency characteristics. The types of the first filter inductor L2 and the second filter inductor L3 mentioned above can be selected according to actual needs and are not specifically limited here.

[0085] It can be understood that the first filter capacitor C2 and the second filter capacitor C3 mentioned above refer to capacitors with filtering functions, and the capacitors are mainly divided into aluminum electrolytic capacitors, ceramic capacitors, mica capacitors, etc. Among them, the characteristics of aluminum electrolytic capacitors are large capacity, positive and negative polarity, suitable for power supply filtering or low-frequency circuits; the characteristics of ceramic capacitors are small size, good heat resistance, low loss, high insulation resistance, but small capacity, suitable for high-frequency circuits; the characteristics of mica capacitors are small dielectric loss, large insulation resistance, small temperature coefficient, suitable for high-frequency circuits. The types of the first filter capacitor C2 and the second filter capacitor C3 mentioned above can be selected according to actual conditions and are no longer specifically limited here.

[0086] Specifically, the piezoelectric resonance control module 300 includes but is not limited to a controller 310 . The controller 310 is connected to the main control module 100 and is used to output a waveform signal and adjust the duty cycle of the waveform signal.

[0087] Furthermore, during the startup of the piezoelectric resonance control module 300 , the main control module 100 stops outputting the supply voltage.

[0088] It is understandable that the above-mentioned waveform signal may be a square wave signal, a sine wave signal, a sawtooth wave signal, etc., and has a high level and a low level.

[0089] Specifically, the voltage control circuit further includes a voltage stabilizer 700 , an input end of the voltage stabilizer 700 is connected to an output end of the piezoelectric resonance control module 300 , and an output end of the voltage stabilizer 700 is connected to the controller 310 .

[0090] It should be noted that the voltage stabilizer 700 can stabilize the voltage output from the output end of the piezoelectric resonance control module 300 within a certain range and input it to the controller 310 .

[0091] like Figure 1 As shown, exemplarily, after the system is powered on, after the main control chip 110 of the main control module 100 receives the start-up instruction, the main control chip 110 starts the piezoelectric resonance control module 300. During the startup of the piezoelectric resonance control module 300, the main control chip 110 outputs a low-level signal to the second switch tube Q2, and the second switch tube Q2 is turned off, so that the control end of the first switch tube Q1 is a low level, and then the first switch tube Q1 is in the off state, so the main control module 100 does not output the power supply voltage.

[0092] Then, when the piezoelectric resonance control module 300 is started, the main control chip 110 outputs a high-level signal to the second switch tube Q2, and the second switch tube Q2 is turned on, so that the control end of the first switch tube Q1 is low level, and then the first switch tube Q1 is in the on state, the main control module 100 outputs the power supply voltage, the piezoelectric resonance control module 300 outputs a high-level signal to the third switch tube Q3, and the third switch tube Q3 receives the high-level signal and is in the on state, and the boost chip 210 starts working and turns on the voltage boost module 200.

[0093] Since the boost chip 210 can output a waveform signal to the fourth switch tube Q4, when the fourth switch tube Q4 receives a high-level signal, the fourth switch tube Q4 is in an on state, and the DC voltage returns to the negative end of the power supply through the first inductor L1, the fourth switch tube Q4 and the impedance device, thereby charging the first inductor L1. When the fourth switch tube Q4 receives a low-level signal, the fourth switch tube Q4 is in an off state, and the DC voltage flows through the first inductor L1 and the first capacitor C1 and returns to the negative end of the power supply, thereby discharging the first inductor L1 and charging the first capacitor C1.

[0094] Then, the piezoelectric resonance control module 300 adjusts the duty cycle of the waveform signal output to the stepless voltage regulation module 400, and the operational amplifier 421 performs stepless voltage regulation on the output voltage according to the duty cycle of the waveform signal to obtain the target output voltage; outputs waveform signals with different duty cycles according to the voltage regulation instruction, and finally converts them into corresponding AC voltages through the voltage boost module 200 and the inverter module 500 and applies them to both ends of the electrodes of the piezoelectric load 600, so that the piezoelectric load 600 vibrates according to the amplitude corresponding to the corresponding AC voltage to achieve stepless regulation. Among them, one voltage regulation instruction corresponds to one time regulation step and one duty cycle regulation step. Since the main control module 100 stops outputting the supply voltage when the piezoelectric resonance control module 300 is turned on, it can prevent the output voltage from dropping during the turning-on process; in addition, it can output any bus voltage by adjusting the duty cycle. During the gear switching process, the dynamic stepless voltage regulation method plays a current buffering role, solves the problem of voltage drop during gear switching, and thus improves the dynamic control effect of the active wind farm.

[0095] In some embodiments, the voltage follower module 420 of the stepless voltage regulation module 400 may further include an isolation chip.

[0096] Specifically, the voltage input terminal of the isolation chip is connected to the integration circuit unit, and the voltage output terminal of the isolation chip is connected to the current regulation unit.

[0097] It is understandable that the above-mentioned isolation chip can be an isolation amplifier and a high-speed digital isolator, or other isolation chips that can achieve voltage following. The isolation chip can achieve electrical isolation between input and output, so that the input voltage is equal to the output voltage. The embodiment of the present application does not specifically limit the structural type of the isolation chip. The isolation chip has the advantages of electrical isolation, signal transmission integrity, high-speed performance, safety, compatibility and low power consumption.

[0098] Exemplarily, after the system is powered on, after the main control chip 110 of the main control module 100 receives the start-up command, the main control chip 110 starts the piezoelectric resonance control module 300. During the startup of the piezoelectric resonance control module 300, the main control chip 110 outputs a low-level signal to the second switch tube Q2, and the second switch tube Q2 is turned off, so that the control end of the first switch tube Q1 is a low level, and then the first switch tube Q1 is in the off state, so the main control module 100 does not output the power supply voltage.

[0099] Next, when the piezoelectric resonance control module 300 is started, the main control chip 110 outputs a high-level signal to the second switch tube Q2, and the second switch tube Q2 is turned on, so that the control end of the first switch tube Q1 is at a low level, and the first switch tube Q1 is in a conducting state. The main control module 100 outputs a power supply voltage, and the piezoelectric resonance control module 300 outputs a high-level signal to the third switch tube Q3. The third switch tube Q3 receives the high-level signal and is in a conducting state. The boost chip 210 starts working and turns on the voltage boost module 200.

[0100] Since the boost chip 210 can output a waveform signal to the fourth switch tube Q4, when the fourth switch tube Q4 receives a high-level signal, the fourth switch tube Q4 is in an on state, and the DC voltage returns to the negative end of the power supply through the first inductor L1, the fourth switch tube Q4 and the impedance device, thereby charging the first inductor L1. When the fourth switch tube Q4 receives a low-level signal, the fourth switch tube Q4 is in an off state, and the DC voltage flows through the first inductor L1 and the first capacitor C1 and returns to the negative end of the power supply, thereby discharging the first inductor L1 and charging the first capacitor C1.

[0101] Then, the piezoelectric resonance control module 300 adjusts the duty cycle of the waveform signal output to the stepless voltage regulation module 400, and the isolation chip performs stepless voltage regulation on the output voltage according to the duty cycle of the waveform signal to obtain the target output voltage; according to the voltage regulation instruction, the waveform signal with different duty cycles is output, and finally converted into the corresponding AC voltage by the voltage boost module 200 and the inverter module 500 and added to the two ends of the electrode of the piezoelectric load 600, so that the piezoelectric load 600 vibrates according to the amplitude corresponding to the corresponding AC voltage to achieve stepless regulation. Among them, one voltage regulation instruction corresponds to one time regulation step and one duty cycle regulation step. Since the main control module 100 stops outputting the supply voltage when the piezoelectric resonance control module 300 is turned on, it can prevent the output voltage from dropping during the start-up process; in addition, it can output any bus voltage by adjusting the duty cycle. During the gear switching process, the dynamic stepless voltage regulation method plays a current buffering role, solves the problem of voltage drop during gear switching, thereby improving the dynamic control effect of the active wind farm.

[0102] like Figure 2 As shown, Figure 2 It is a circuit structure diagram of a voltage control circuit provided in another embodiment of the present application.

[0103] In one embodiment, the embodiment of the present application provides a voltage control circuit, which also includes a fifth switch tube Q5, the input end of the fifth switch tube Q5 is connected to the output end of the voltage boosting module 200 and the stepless voltage regulation module 400, the output end of the fifth switch tube Q5 is connected to the ground end, and the piezoelectric resonance control module 300 is connected to the control end of the fifth switch tube Q5 and is used to control the conduction or shutdown of the fifth switch tube Q5.

[0104] Specifically, the controller 310 of the piezoelectric resonance control module 300 can output a level signal to the fifth switch tube Q5. Therefore, when the fifth switch tube Q5 receives a high level signal, the fifth switch tube Q5 is in an on state, and when the fifth switch tube Q5 receives a low level signal, the fifth switch tube Q5 is in an off state.

[0105] It is understandable that the first to ninth switching tubes mentioned above can be field effect tubes and triodes, or other switching tubes that can control on and off. The switching tube is turned on by a high level input and cut off by a low level input. The embodiment of the present application does not specifically limit the structural type of the first to ninth switching tubes. For example, when an NPN triode is used as a switching tube, the control end of the switching tube can be a base. When a junction field effect tube is used as a switching tube, the control end of the switching tube can be a gate. The switching tube has the characteristics of long life, safety and reliability, no mechanical wear, fast switching speed, and small size. The switching tube can use a very small current to control the on and off of a large current, and has a wide range of applications.

[0106] like Figure 2 As shown, exemplarily, after the system is powered on, after the main control chip 110 of the main control module 100 receives the start-up instruction, the main control chip 110 starts the piezoelectric resonance control module 300. During the startup of the piezoelectric resonance control module 300, the main control chip 110 outputs a low-level signal to the second switch tube Q2, and the second switch tube Q2 is turned off, so that the control end of the first switch tube Q1 is a low level, and then the first switch tube Q1 is in the off state, so the main control module 100 does not output the power supply voltage.

[0107] Then, when the piezoelectric resonance control module 300 is started, the main control chip 110 outputs a high-level signal to the second switch tube Q2, and the second switch tube Q2 is turned on, so that the control end of the first switch tube Q1 is low level, and then the first switch tube Q1 is in the on state, the main control module 100 outputs the power supply voltage, the piezoelectric resonance control module 300 outputs a high-level signal to the third switch tube Q3, and the third switch tube Q3 receives the high-level signal and is in the on state, and the boost chip 210 starts working and turns on the voltage boost module 200.

[0108] Since the boost chip 210 can output a waveform signal to the fourth switch tube Q4, when the fourth switch tube Q4 receives a high-level signal, the fourth switch tube Q4 is in an on state, and the DC voltage returns to the negative end of the power supply through the first inductor L1, the fourth switch tube Q4 and the impedance device, thereby charging the first inductor L1. When the fourth switch tube Q4 receives a low-level signal, the fourth switch tube Q4 is in an off state, and the DC voltage flows through the first inductor L1 and the first capacitor C1 and returns to the negative end of the power supply, thereby discharging the first inductor L1 and charging the first capacitor C1.

[0109] Then, the piezoelectric resonance control module 300 adjusts the duty cycle of the waveform signal output to the stepless voltage regulation module 400. If the fifth switch tube Q5 receives a high-level signal, the fifth switch tube Q5 is turned on, and the operational amplifier 421 performs stepless voltage regulation on the output voltage according to the duty cycle of the waveform signal to obtain the target output voltage; according to the voltage regulation instruction, the waveform signal with different duty cycles is output, and finally converted into a corresponding AC voltage through the voltage boost module 200 and the inverter module 500 and applied to the two ends of the electrode of the piezoelectric load 600, so that the piezoelectric load 600 vibrates according to the amplitude corresponding to the corresponding AC voltage to achieve stepless regulation. Among them, one voltage regulation instruction corresponds to one time adjustment step and one duty cycle adjustment step. Since the main control module 100 stops outputting the power supply voltage when the piezoelectric resonance control module 300 is turned on, it is possible to prevent the output voltage from dropping during the startup process; in addition, the duty cycle can be adjusted to output any bus voltage. During the gear switching process, the dynamic stepless voltage regulation method plays a current buffering role, which solves the problem of voltage drop during gear switching, thereby improving the dynamic control effect of the active wind farm; moreover, the fifth switch tube Q5 makes the duty cycle output by the piezoelectric resonance control module 300 positively correlated with the bus voltage, thereby preventing the bus voltage from being too high at startup during the startup process.

[0110] In some embodiments, the voltage follower module 420 of the stepless voltage regulation module 400 may further include an isolation chip.

[0111] Specifically, the voltage input terminal of the isolation chip is connected to the integration circuit unit, and the voltage output terminal of the isolation chip is connected to the current regulation unit.

[0112] It is understandable that the above-mentioned isolation chip can be an isolation amplifier and a high-speed digital isolator, or other isolation chips that can achieve voltage following. The isolation chip can achieve electrical isolation between input and output, so that the input voltage is equal to the output voltage. The embodiment of the present application does not specifically limit the structural type of the isolation chip. The isolation chip has the advantages of electrical isolation, signal transmission integrity, high-speed performance, safety, compatibility and low power consumption.

[0113] Exemplarily, after the system is powered on, after the main control chip 110 of the main control module 100 receives the start-up command, the main control chip 110 starts the piezoelectric resonance control module 300. During the startup of the piezoelectric resonance control module 300, the main control chip 110 outputs a low-level signal to the second switch tube Q2, and the second switch tube Q2 is turned off, so that the control end of the first switch tube Q1 is a low level, and then the first switch tube Q1 is in the off state, so the main control module 100 does not output the supply voltage.

[0114] Then, when the piezoelectric resonance control module 300 is started, the main control chip 110 outputs a high-level signal to the second switch tube Q2, and the second switch tube Q2 is turned on, so that the control end of the first switch tube Q1 is low level, and then the first switch tube Q1 is in the on state, the main control module 100 outputs the power supply voltage, the piezoelectric resonance control module 300 outputs a high-level signal to the third switch tube Q3, and the third switch tube Q3 receives the high-level signal and is in the on state, and the boost chip 210 starts working and turns on the voltage boost module 200.

[0115] Since the boost chip 210 can output a waveform signal to the fourth switch tube Q4, when the fourth switch tube Q4 receives a high-level signal, the fourth switch tube Q4 is in an on state, and the DC voltage returns to the negative end of the power supply through the first inductor L1, the fourth switch tube Q4 and the impedance device, thereby charging the first inductor L1. When the fourth switch tube Q4 receives a low-level signal, the fourth switch tube Q4 is in an off state, and the DC voltage flows through the first inductor L1 and the first capacitor C1 and returns to the negative end of the power supply, thereby discharging the first inductor L1 and charging the first capacitor C1.

[0116] Then, the piezoelectric resonance control module 300 adjusts the duty cycle of the waveform signal output to the stepless voltage regulation module 400. If the fifth switch tube Q5 receives a high-level signal, the fifth switch tube Q5 is turned on, and the isolation chip performs stepless voltage regulation on the output voltage according to the duty cycle of the waveform signal to obtain the target output voltage; according to the voltage regulation instruction, the waveform signal with different duty cycles is output, and finally converted into a corresponding AC voltage through the voltage boost module 200 and the inverter module 500 and applied to the two ends of the electrode of the piezoelectric load 600, so that the piezoelectric load 600 vibrates according to the amplitude corresponding to the corresponding AC voltage to achieve stepless regulation. Among them, one voltage regulation instruction corresponds to one time adjustment step and one duty cycle adjustment step. Since the main control module 100 stops outputting the power supply voltage when the piezoelectric resonance control module 300 is turned on, it is possible to prevent the output voltage from dropping during the startup process; in addition, the duty cycle can be adjusted to output any bus voltage. During the gear switching process, the dynamic stepless voltage regulation method plays a current buffering role, which solves the problem of voltage drop during gear switching, thereby improving the dynamic control effect of the active wind farm; moreover, the fifth switch tube Q5 makes the duty cycle output by the piezoelectric resonance control module 300 positively correlated with the bus voltage, thereby preventing the bus voltage from being too high at startup during the startup process.

[0117] like Figure 3 As shown, Figure 3 It is a schematic diagram of the circuit structure of a main control module provided in one embodiment of the present application.

[0118] In one embodiment, the embodiment of the present application provides a circuit of a main control module, the main control module 100 includes but is not limited to a main control chip 110 and a first switch tube Q1, the main control chip 110 is connected to the control end of the first switch tube Q1, the input end of the first switch tube Q1 is used to connect to the input voltage, and the output end of the first switch tube Q1 is used to shut down or output the power supply voltage.

[0119] It should be noted that the main control chip 110 can output a level signal to the first switch tube Q1. When the control end of the first switch tube Q1 receives a high level signal, the first switch tube Q1 is in an on state. When the control end of the first switch tube Q1 receives a low level signal, the first switch tube Q1 is in an off state.

[0120] It is understandable that the first switch tube Q1 is a fast response MOS tube.

[0121] like Figure 4 As shown, Figure 4 It is a schematic diagram of the circuit structure of a main control module provided in another embodiment of the present application.

[0122] In one embodiment, the embodiment of the present application provides a circuit of a main control module, the main control module 100 includes but is not limited to a main control chip 110 and a first switch tube Q1, the main control chip 110 is connected to the control end of the first switch tube Q1, the input end of the first switch tube Q1 is used to connect to the input voltage, and the output end of the first switch tube Q1 is used to shut down or output the power supply voltage.

[0123] It should be noted that the main control chip 110 can output a waveform signal to the first switch tube Q1. When the control end of the first switch tube Q1 receives a high-level signal, the first switch tube Q1 is in an on state. When the control end of the first switch tube Q1 receives a low-level signal, the first switch tube Q1 is in an off state.

[0124] It is understandable that the first switch tube Q1 is a high current transistor.

[0125] It is understandable that the above-mentioned waveform signal may be a square wave signal, a sine wave signal, a sawtooth wave signal, etc., and has a high level and a low level.

[0126] like Figure 3 and Figure 4 As shown, the main control module 100 further includes a second switch tube Q2 , the main control chip 110 is connected to the control end of the second switch tube Q2 , and the input end of the second switch tube Q2 is connected to the control end of the first switch tube Q1 .

[0127] It should be noted that the main control chip 110 can output a waveform signal to the second switch tube Q2. When the control end of the second switch tube Q2 receives a high-level signal, the second switch tube Q2 is in an on state. At this time, the control end of the first switch tube Q1 receives a high-level signal, and the first switch tube Q1 is in an on state. When the control end of the second switch tube Q2 receives a low-level signal, the second switch tube Q2 is in an off state. At this time, the first switch tube Q1 receives a low-level signal, and the first switch tube Q1 is in an off state.

[0128] It is understandable that the second switch tube Q2 mentioned above can be a field effect tube and a triode, or other switch tubes capable of controlling on and off. The switch tube is turned on by a high level input and cut off by a low level input. The embodiment of the present application does not specifically limit the structural type of the second switch tube Q2. For example, when an NPN triode is used as a switch tube, the control end of the second switch tube Q2 can be a base. When a junction field effect tube is used as a switch tube, the control end of the second switch tube Q2 can be a gate. The switch tube has the characteristics of long life, safety and reliability, no mechanical wear, fast switching speed, and small size. The switch tube can use a very small current to control the on and off of a large current, and has a wide range of applications.

[0129] Figure 3 and Figure 4 As shown, exemplarily, after the system is powered on and a start-up instruction is received, the main control chip 110 starts the piezoelectric resonance control module 300. During the start-up of the piezoelectric resonance control module 300, the main control chip 110 outputs a low-level signal to the second switch tube Q2, and the second switch tube Q2 is turned off, so that the control end of the first switch tube Q1 is at a low level, and then the first switch tube Q1 is in a turned-off state, so the main control module 100 does not output the power supply voltage; then, after the piezoelectric resonance control module 300 is started, the main control chip 110 outputs a high-level signal to the second switch tube Q2, and the second switch tube Q2 is turned on, so that the control end of the first switch tube Q1 is at a low level, and then the first switch tube Q1 is in a turned-on state, and the main control module 100 outputs the power supply voltage. Since the main control module 100 stops outputting the power supply voltage when the piezoelectric resonance control module 300 is turned on, it can prevent the output voltage from dropping during the start-up process.

[0130] like Figure 5 As shown, Figure 5 It is a schematic diagram of the circuit structure of a main control module provided in another embodiment of the present application.

[0131] In one embodiment, the embodiment of the present application provides a circuit of a main control module, the main control module 100 includes but is not limited to a first switch tube Q1 and a second switch tube Q2, the input end of the second switch tube Q2 is connected to the control end of the first switch tube Q1, and the input end of the first switch tube Q1 is used to connect to the enable end of the boost chip 210.

[0132] It is understandable that the first switch tube Q1 and the second switch tube Q2 mentioned above can be field effect tubes and triodes, or other switch tubes that can control on and off. The switch tube is turned on by a high level input and cut off by a low level input. The embodiment of the present application does not specifically limit the structural type of the first switch tube Q1 and the second switch tube Q2. For example, when an NPN triode is used as a switch tube, the control end of the first switch tube Q1 and the second switch tube Q2 can be a base. When a junction field effect tube is used as a switch tube, the control end of the first switch tube Q1 and the second switch tube Q2 can be a gate. The switch tube has the characteristics of long life, safety and reliability, no mechanical wear, fast switching speed, small size, etc. The switch tube can use a very small current to control the on and off of a large current, and has a wide range of applications.

[0133] Specifically, after the system is powered on, when the first switch tube Q1 and the second switch tube Q2 receive a low-level signal, the first switch tube Q1 and the second switch tube Q2 are in a disconnected state, and when the first switch tube Q1 and the second switch tube Q2 receive a high-level signal, the first switch tube Q1 and the second switch tube Q2 are in a conductive state, and the boost chip 210 is enabled and starts working. Therefore, by cooperating with the first switch tube Q1 and the second switch tube Q2, it is ensured that the main control module 100 does not output the supply voltage when the system is powered on.

[0134] like Figure 6 As shown, Figure 6 It is a circuit diagram of a stepless voltage regulation module and a partial circuit of a voltage boost module provided in an embodiment of the present application.

[0135] Specifically, the operational amplifier 421 performs stepless voltage regulation on the output voltage according to the duty cycle of the waveform signal to obtain a target output voltage.

[0136] Furthermore, the target output voltage Wherein, VFB is the feedback voltage of the boost chip 210 , that is, the voltage of the common terminal among the first resistor R1 , the second resistor R2 and the third resistor R3 , and VFB is a fixed value, and VP is the waveform amplitude of the target duty cycle output by the piezoelectric resonance control module 300 .

[0137] like Figure 7 and Figure 8 As shown, Figure 7 is a structural schematic diagram of an air conditioning device provided by an embodiment of the present application, Figure 8It is a schematic diagram of the structure of a piezoelectric load provided in one embodiment of the present application.

[0138] In one embodiment, the air conditioning equipment is provided with a piezoelectric load 600 and a voltage control circuit of any of the above embodiments. The piezoelectric load 600 is provided at the air outlet of the air conditioning equipment. The voltage control circuit is connected to the piezoelectric load 600 for controlling the piezoelectric load 600 to vibrate.

[0139] It is understandable that the piezoelectric loads 600 are provided in multiple groups, each group includes at least one piezoelectric load 600, and each group of piezoelectric loads 600 is individually controlled by a corresponding voltage control circuit.

[0140] It is worth noting that when the wind speed of the air conditioning equipment is greater, the DC voltage output by the voltage control circuit is greater, and the AC voltage received by the piezoelectric load 600 is greater, thereby making the swing amplitude of the piezoelectric load 600 larger, and thus the wind can be dispersed to achieve a soft wind feeling; on the contrary, when the wind speed of the air conditioning equipment is smaller, the DC voltage output by the voltage control circuit is smaller, and the AC voltage received by the piezoelectric load 600 is smaller, thereby not destroying the soft wind feeling.

[0141] It is understandable that the air conditioning equipment may be an air conditioner, an air purifier, a humidifier or other device that can blow air to condition the air, and the type of air conditioning equipment is not specifically limited herein.

[0142] It is worth noting that since the air conditioning equipment of the embodiment of the present application includes the voltage control circuit of the above embodiment, the specific implementation manner and technical effects of the air conditioning equipment of the embodiment of the present application can refer to the specific implementation manner and technical effects of the voltage control circuit of any of the above embodiments.

[0143] like Fig. 9 As shown, Fig. 9 It is a schematic diagram of a system architecture platform for executing a voltage control method provided by an embodiment of the present application.

[0144] The system architecture platform 900 of the embodiment of the present application includes one or more processors 910 and a memory 920. Fig. 9 In the figure, a processor 910 and a memory 920 are taken as an example.

[0145] The processor 910 and the memory 920 may be connected via a bus or other means. Fig. 9 The example of connecting through bus is taken in the following.

[0146] The memory 920, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer executable programs. In addition, the memory 920 may include a high-speed random access memory, and may also include a non-transitory memory, such as at least one disk storage device, a flash memory device, or other non-transitory solid-state storage device. In some embodiments, the memory 920 may optionally include a memory 920 remotely disposed relative to the processor 910, and these remote memories may be connected to the system architecture platform 900 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0147] Those skilled in the art will understand that Fig. 9 The circuit structure shown in the figure does not constitute a limitation on the system architecture platform 900, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0148] exist Fig. 9 In the system architecture platform 900 shown, the processor 910 can be used to call the control program of the voltage control circuit stored in the memory 920, so as to implement the voltage control method.

[0149] Based on the above-mentioned system architecture platform 900, voltage control circuit and hardware structure of the air conditioning device 800, various embodiments of the voltage control method of the present application are proposed.

[0150] like Figure 1 , Figure 2 and Fig.10 As shown, Fig.10 1 is a flow chart of a voltage control method provided by an embodiment of the present application. The control method can be applied to the above-mentioned voltage control circuit and air conditioning equipment, and may include but is not limited to steps S110 to S140.

[0151] Step S110, the main control module starts the piezoelectric resonance control module in response to the start instruction;

[0152] Step S120, during the startup of the piezoelectric resonance control module, the main control module stops outputting the power supply voltage;

[0153] Step S130, after the piezoelectric resonance control module is started, the voltage boost module is turned on;

[0154] Step S140: The piezoelectric resonance control module adjusts the duty cycle of the waveform signal output to the stepless voltage regulation module, so that the stepless voltage regulation module performs stepless voltage regulation on the output voltage according to the duty cycle.

[0155] Specifically, after receiving the start-up instruction, the main control module starts the piezoelectric resonance control module. During the start-up of the piezoelectric resonance control module, the main control module will output a low-level signal to the second switch tube. The first switch tube and the second switch tube receive the low-level signal and are in the off state, so that the main control module stops outputting the power supply voltage; then when the piezoelectric resonance control module is started, the main control module will output a high-level signal to the second switch tube. The first switch tube and the second switch tube receive the high-level signal and are in the on state, thereby starting the voltage boost module; then the piezoelectric resonance control module adjusts the duty cycle of the waveform signal output to the stepless voltage regulation module, so that the stepless voltage regulation module can perform stepless voltage regulation on the output voltage according to the duty cycle, thereby obtaining the target output voltage. Since the main control module stops outputting the power supply voltage when starting the piezoelectric resonance control module, it can prevent the output voltage from dropping during the start-up process.

[0156] like Figure 1 , Figure 2 and Fig.11 As shown, Fig.11 yes Fig.10 The specific flow chart of step S130 of the voltage control method provided in the embodiment. The voltage control method of the embodiment of the present application may include but is not limited to steps S210 to S220.

[0157] Step S210, the main control module outputs the supply voltage to the voltage boost module;

[0158] Step S220: The piezoelectric resonance control module sends an enable signal to the voltage boost module to start the voltage boost module.

[0159] Specifically, after receiving the start-up instruction, the main control module starts the piezoelectric resonance control module. During the start-up period of the piezoelectric resonance control module, the main control module will output a low-level signal to the second switch tube. The first switch tube and the second switch tube receive the low-level signal and are in the off state, so that the main control module stops outputting the power supply voltage; then when the piezoelectric resonance control module is started, the main control module will output a high-level signal to the second switch tube. The first switch tube and the second switch tube receive the high-level signal and are in the on state. The main control module outputs the power supply voltage to the voltage boosting module, and the piezoelectric resonance control module sends an enable signal to the voltage boosting module. The third switch tube is turned on, and then the voltage boosting module is turned on; then the piezoelectric resonance control module adjusts the duty cycle of the waveform signal output to the stepless voltage regulation module, so that the stepless voltage regulation module can perform stepless voltage regulation on the output voltage according to the duty cycle, and then obtain the target output voltage. Since the main control module stops outputting the power supply voltage when the piezoelectric resonance control module is turned on, it can prevent the output voltage from dropping during the start-up process.

[0160] like Figure 1, Figure 2 and Fig.12 As shown, Fig.12 yes Fig.10 The specific flow chart of step S140 of the voltage control method provided in the embodiment. The voltage control method of the embodiment of the present application may include but is not limited to steps S310 to S320.

[0161] Step S310: During the start-up phase of the output voltage, the piezoelectric resonance control module adjusts the output waveform signal to the stepless voltage regulation module;

[0162] Step S320: The piezoelectric resonance control module reduces the duty cycle of the waveform signal at a first adjustment rate so that the output voltage increases from the turn-on voltage to the starting voltage.

[0163] Specifically, after receiving the start-up instruction, the main control module starts the piezoelectric resonance control module. During the start-up of the piezoelectric resonance control module, the main control module will output a low-level signal to the second switch tube. The first switch tube and the second switch tube receive the low-level signal and are in the off state, so that the main control module stops outputting the power supply voltage; then, after the piezoelectric resonance control module is started, the main control module will output a high-level signal to the second switch tube. The first switch tube and the second switch tube receive the high-level signal and are in the on state. The main control module outputs the power supply voltage to the voltage boosting module, and the piezoelectric resonance control module sends an enable signal to the voltage boosting module. The third switch tube is turned on, and then the voltage boosting module is turned on; then, in the start-up phase of the output voltage, the piezoelectric resonance control module adjusts the waveform signal output to the stepless voltage regulation module, and the piezoelectric resonance control module reduces the duty cycle of the waveform signal at the first adjustment rate, so that the output voltage rises from the start-up voltage to the start-up voltage. Since the main control module stops outputting the power supply voltage when starting the piezoelectric resonance control module, it can prevent the output voltage from dropping during the start-up process. In addition, when the bus voltage is started, the duty cycle of the output waveform signal is adjusted to control the bus voltage to reach the starting voltage at a first modulation rate, thereby preventing the supply voltage from dropping during the starting process.

[0164] It should be noted that the adjustment rate Among them, U max , U min is the maximum and minimum output voltage, P max , P min is the maximum and minimum value of the output duty cycle, n is the step size of adjusting the duty cycle, Δt is the time interval, and it is a fixed value.

[0165] Furthermore, adjust the time U o is the target output voltage, U c is the current output voltage.

[0166] like Figure 1 , Figure 2 and Fig.13 As shown, Fig.13 yes Fig.10 The specific flow chart of step S140 of the voltage control method provided in the embodiment. The voltage control method of the embodiment of the present application may include but is not limited to steps S410 to S440.

[0167] Step S410: In the output voltage adjustment stage, the main control module determines the corresponding target output voltage according to the received voltage adjustment instruction;

[0168] Step S420, determining a target duty cycle according to the target output voltage;

[0169] Step S430, outputting a waveform signal of a target duty cycle to a stepless voltage regulation module through the piezoelectric resonance control module;

[0170] Step S440: adjusting the duty cycle of the waveform signal at a second regulation rate so that the output voltage is adjusted to a target output voltage.

[0171] Specifically, after receiving the start-up instruction, the main control module starts the piezoelectric resonance control module. During the start-up of the piezoelectric resonance control module, the main control module outputs a low-level signal to the second switch tube. The first switch tube and the second switch tube receive the low-level signal and are in the off state, so that the main control module stops outputting the power supply voltage. Secondly, after the piezoelectric resonance control module is started, the main control module outputs a high-level signal to the second switch tube. The first switch tube and the second switch tube receive the high-level signal and are in the on state. The main control module outputs the power supply voltage to the voltage boosting module, and the piezoelectric resonance control module sends an enable signal to the voltage boosting module. The third switch tube is turned on, thereby starting the voltage boosting module. Thirdly, in the output voltage adjustment stage, the main control module receives the voltage adjustment instruction and determines the corresponding target output voltage according to the voltage adjustment instruction. Next, the target duty cycle is determined according to the target output voltage. Then the piezoelectric resonance control module outputs a waveform signal of the target duty cycle to the stepless voltage regulation module. Finally, the piezoelectric resonance control module reduces the duty cycle of the waveform signal at a second adjustment rate, thereby adjusting the output voltage to the target output voltage. Since the main control module stops outputting the power supply voltage when the piezoelectric resonance control module is turned on, the output voltage drop during the start-up process can be prevented. In addition, when the bus voltage is adjusted, the bus voltage is controlled to gradually reach the target output voltage at a second adjustment rate by adjusting the duty cycle of the output waveform signal, thereby preventing the power supply voltage from dropping during the gear shifting and skipping adjustment process.

[0172] It should be noted that the adjustment rate Among them, U max , Umin is the maximum and minimum output voltage, P max , P min is the maximum and minimum value of the output duty cycle, n is the step size of adjusting the duty cycle, Δt is the time interval, and it is a fixed value.

[0173] Furthermore, adjust the time U o is the target output voltage, U c is the current output voltage.

[0174] like Figure 1 , Figure 2 and Fig.14 As shown, Fig.14 yes Fig.10 The specific flow chart of step S140 of the voltage control method provided in the embodiment. The voltage control method of the embodiment of the present application may include but is not limited to steps S510 to S530.

[0175] Step S510: During the stop phase of the output voltage, the main control module receives a shutdown instruction;

[0176] Step S520: increasing the duty cycle of the waveform signal at a third adjustment rate through the piezoelectric resonance control module, so that the output voltage is adjusted to the stop voltage;

[0177] Step S530: The main control module stops outputting the supply voltage.

[0178] Specifically, after receiving the start-up instruction, the main control module starts the piezoelectric resonance control module. During the start-up of the piezoelectric resonance control module, the main control module will output a low-level signal to the second switch tube. The first switch tube and the second switch tube receive the low-level signal and are in the off state, so that the main control module stops outputting the power supply voltage; secondly, after the piezoelectric resonance control module is started, the main control module will output a high-level signal to the second switch tube. The first switch tube and the second switch tube receive the high-level signal and are in the on state. The main control module outputs the power supply voltage to the voltage boosting module, and the piezoelectric resonance control module sends an enable signal to the voltage boosting module. The third switch tube is turned on, and then the voltage boosting module is turned on; thirdly, in the stop stage of the output voltage, the main control module receives a shutdown instruction; from then on, the piezoelectric resonance control module increases the duty cycle of the waveform signal at the third adjustment rate, so that the output voltage is the stop voltage; finally, the main control module stops outputting the power supply voltage. Since the main control module stops outputting the power supply voltage when the piezoelectric resonance control module is turned on, it can prevent the output voltage from dropping during the start-up process. In addition, when the bus voltage is adjusted, the duty cycle of the output waveform signal is adjusted to control the bus voltage to gradually reach the stop voltage at a third adjustment rate, and when the main controller stops outputting the power supply voltage, a buffer time is provided to allow the piezoelectric load to stop slowly, thereby preventing the piezoelectric load from stopping suddenly and causing damage.

[0179] It should be noted that the adjustment rate Among them, U max , U min is the maximum and minimum output voltage, P max , P min is the maximum and minimum value of the output duty cycle, n is the step size of adjusting the duty cycle, Δt is the time interval, and it is a fixed value.

[0180] Furthermore, adjust the time U o is the target output voltage, U c is the current output voltage.

[0181] like Fig.15 As shown, Fig.15 This is a timing diagram of a voltage control circuit provided in one embodiment of the present application.

[0182] Specifically, after the system is powered on, when the main control module receives the start-up command, the main control module starts the piezoelectric resonance control module; during the startup of the piezoelectric resonance control module, there will be a delay of 500mS, at which time the main control module stops outputting the power supply voltage; then the piezoelectric resonance control module establishes communication and receives the voltage adjustment command. After a delay of about 1S, the piezoelectric resonance control module starts the voltage boost module, and keeps the bus voltage at a minimum by adjusting the duty cycle of the output waveform signal, and reduces the duty cycle of the waveform signal at a first rate, so that the bus voltage rises to the start-up voltage, and starts to output the modulated wave; when the piezoelectric resonance control module receives the voltage adjustment command ... starts to output the modulated wave; when the piezoelectric resonance control module receives the voltage adjustment command, the piezoelectric resonance control module starts the voltage boost module, and starts to output the modulated wave; when the piezoelectric resonance control module receives the voltage adjustment command, the piezoelectric resonance control module starts to output the modulated wave, and starts to output the modulated wave; when the piezoelectric resonance control module receives the voltage adjustment command, the piezoelectric resonance control module starts to output the modulated wave, and starts to output the modulated wave; when the piezoelectric resonance control module receives the voltage adjustment command, the piezoelectric resonance control module starts to output the modulated wave, and starts to output the modulated wave; when the piezoelectric resonance control module receives the voltage adjustment command, the piezoelectric resonance control module starts to output the modulated wave, and starts to output the modulated wave. When the received target gear is 1, the duty cycle of the waveform signal is adjusted at the second regulation rate so that the output voltage is adjusted to the target output voltage 1; when the received target gear is n, the duty cycle of the waveform signal is adjusted at the second regulation rate so that the output voltage is adjusted to the target output voltage n; when the piezoelectric resonance control module receives a stop signal, the duty cycle of the waveform signal is adjusted at the third regulation rate so that the output voltage is adjusted to the stop voltage, and the modulation wave output is stopped, and the main control module stops outputting the power supply voltage; finally, the main control module turns off the power supply of the piezoelectric resonance control module after a delay of 1s.

[0183] It should be noted that the values ​​of the start voltage and the stop voltage are not equal, and the values ​​of the start voltage and the stop voltage are both relatively small.

[0184] like Fig.16 As shown, Fig.16 This is a flow chart of a voltage control circuit provided by an embodiment of the present application.

[0185] 1) The main control module receives the start command;

[0186] 2) The main control module starts the piezoelectric resonance control module;

[0187] 3) The piezoelectric resonance control module starts and waits for T1 initialization time;

[0188] 3.1) System and power supply stabilization time and keep stopping outputting supply voltage;

[0189] 4) The piezoelectric resonance control module establishes communication and receives voltage regulation instructions;

[0190] 5) Turn on the voltage boost module;

[0191] 5.1) Maintain the bus voltage at a minimum by adjusting the duty cycle of the output waveform signal;

[0192] 6) reducing the duty cycle of the waveform signal at a first rate so that the bus voltage rises to a starting voltage;

[0193] 7) Determine whether the received target voltage gear is 1;

[0194] 7.1) If the received target voltage level is 1, the duty cycle of the waveform signal is adjusted at a second adjustment rate so that the output voltage is adjusted to the target output voltage 1;

[0195] 8) Determine whether the received target voltage gear is n;

[0196] 8.1) adjusting the duty cycle of the waveform signal at a second regulation rate so that the output voltage is adjusted to a target output voltage n;

[0197] 9) Determine whether a stop signal is received;

[0198] 9.1) If a stop signal is received, the duty cycle of the waveform signal is adjusted at a third adjustment rate so that the output voltage is adjusted to the stop voltage;

[0199] 10) Stop the modulation wave output and the power supply voltage output;

[0200] 11) The main controller turns off the power supply of the piezoelectric resonance control module.

[0201] Specifically, after the system is powered on, when the main control module receives the start-up command, the main control module starts the piezoelectric resonance control module; during the startup of the piezoelectric resonance control module, it will wait for a T1 initialization time, that is, the system and power supply stabilization time, and the main control module will stop outputting the power supply voltage; then the piezoelectric resonance control module establishes communication and receives the voltage adjustment command; then, the piezoelectric resonance control module starts the voltage boost module, and keeps the bus voltage at a minimum by adjusting the duty cycle of the output waveform signal, and reduces the duty cycle of the waveform signal at a first rate, so that the bus voltage rises to the starting voltage; when the piezoelectric resonance control When the target gear received by the control module is 1, the duty cycle of the waveform signal is adjusted at the second adjustment rate so that the output voltage is adjusted to the target output voltage 1; when the target gear received by the piezoelectric resonance control module is n, the duty cycle of the waveform signal is adjusted at the second adjustment rate so that the output voltage is adjusted to the target output voltage n; when the piezoelectric resonance control module receives a stop signal, the duty cycle of the waveform signal is adjusted at the third adjustment rate so that the output voltage is adjusted to the stop voltage, and the modulation wave output is stopped, and the main control module stops outputting the power supply voltage; finally, the main control module turns off the power supply of the piezoelectric resonance control module. Since the main control module stops outputting the power supply voltage when the piezoelectric resonance control module is turned on, the output voltage drop can be prevented during the start-up process. In addition, when the bus voltage is adjusted, by adjusting the duty cycle of the output waveform signal, the bus voltage is controlled to reach the starting voltage at the first modulation rate, and the bus voltage is controlled to gradually reach the target output voltage at the second adjustment rate and the bus voltage is controlled to gradually reach the stop voltage at the third adjustment rate, thereby preventing the phenomenon of the power supply voltage drop during the startup process and preventing the power supply voltage drop during the shifting and skipping adjustment process. Moreover, when the main controller stops outputting the power supply voltage, a buffer time is provided to allow the piezoelectric load to stop slowly, thereby preventing the piezoelectric load from being damaged due to a sudden stop.

[0202] Based on the voltage control methods of the above-mentioned embodiments, various embodiments of the controller, air conditioning equipment and computer-readable storage medium of the present application are respectively proposed below.

[0203] In addition, an embodiment of the present application provides a controller, which includes: a processor, a memory, and a computer program stored in the memory and executable on the processor.

[0204] The processor and the memory may be connected via a bus or other means.

[0205] It should be noted that the controller in this embodiment may include: Fig. 9 The processor and memory in the illustrated embodiment both belong to the same inventive concept, and therefore both have the same implementation principles and beneficial effects, which will not be described in detail here.

[0206] The non-transient software program and instructions required to implement the voltage control method of the above embodiment are stored in the memory, and when executed by the processor, the voltage control method of the above embodiment is executed.

[0207] It is worth noting that since the controller of the embodiment of the present application can execute the voltage control method of any of the above embodiments, the specific implementation methods and technical effects of the controller of the embodiment of the present application can refer to the specific implementation methods and technical effects of the voltage control method of any of the above embodiments.

[0208] In addition, an embodiment of the present application further provides an air conditioning device, which includes the controller of any of the above embodiments.

[0209] It is worth noting that since the air conditioning equipment of the embodiments of the present application includes the controller of any of the above-mentioned embodiments, and the controller of any of the above-mentioned embodiments can execute the voltage control method of any of the above-mentioned embodiments, the specific implementation methods and technical effects of the air conditioning equipment of the embodiments of the present application can refer to the specific implementation methods and technical effects of the voltage control method of any of the above-mentioned embodiments.

[0210] In addition, an embodiment of the present application further provides a computer-readable storage medium, which stores computer-executable instructions, and the computer-executable instructions are used to execute the above-described voltage control method. Figures 10 to 14 The method steps in .

[0211] It is worth noting that since the computer-readable storage medium of the embodiments of the present application can execute the voltage control method of any of the above embodiments, the specific implementation methods and technical effects of the computer-readable storage medium of the embodiments of the present application can refer to the specific implementation methods and technical effects of the voltage control method of any of the above embodiments.

[0212] It will be appreciated by those skilled in the art that all or some of the steps and devices in the disclosed method above may be implemented as software, firmware, hardware and appropriate combinations thereof. Some physical components or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor or a microprocessor, or may be implemented as hardware, or may be implemented as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or a non-transitory medium) and a communication medium (or a temporary medium). As known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage or other magnetic storage circuits, or any other medium that may be used to store desired information and may be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically include computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0213] Although the implementation methods disclosed in this application are as above, the contents are only implementation methods adopted to facilitate understanding of this application, and are not intended to limit this application. Any technician in the field to which this application belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in this application, but the scope of patent protection of this application shall still be defined by the attached claims.

[0214] The above is a specific description of the preferred implementation of the present application, but the present application is not limited to the above implementation mode. Technical personnel familiar with the field can also make various equivalent modifications or substitutions under the shared conditions without violating the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A voltage control circuit, characterized in that: include: A main control module, used for receiving an input voltage and shutting off or outputting a supply voltage through an output terminal; A voltage boost module, connected to the output end of the main control module, for regulating the supply voltage to obtain an output voltage; A piezoelectric resonance control module is connected to the main control module and is used to output a waveform signal and adjust the duty cycle of the waveform signal; wherein, during the startup of the piezoelectric resonance control module, the main control module stops outputting the supply voltage; A stepless voltage regulation module, connected between the output end of the piezoelectric resonance control module and the voltage boost module, and used for performing stepless voltage regulation on the output voltage according to the duty cycle of the waveform signal; The inverter module has an input side connected to the output end of the voltage boost module and the piezoelectric resonance control module, and an output side used to output an AC voltage to the piezoelectric load so that the piezoelectric load vibrates under the AC voltage.

2. The voltage control circuit according to claim 1, characterized in that: The main control module includes a main control chip and a first switch tube, the main control chip is connected to the control end of the first switch tube, the input end of the first switch tube is used to connect to the input voltage, and the output end of the first switch tube is used to shut down or output the power supply voltage.

3. The voltage control circuit according to claim 2, characterized in that: The main control module further includes a second switch tube, the main control chip is connected to the control end of the second switch tube, and the input end of the second switch tube is connected to the control end of the first switch tube.

4. The voltage control circuit according to claim 1, characterized in that: The voltage boost module includes a boost chip and a third switch tube, the input end of the third switch tube is connected to the output end of the main control module, the output end of the third switch tube is connected to the enable end of the boost chip, and the piezoelectric resonance control module is connected to the control end of the third switch tube and is used to control the conduction or shutdown of the third switch tube.

5. The voltage control circuit according to claim 4, characterized in that: The voltage boost module also includes a peripheral boost circuit, which includes a fourth switch tube, a first inductor and a first capacitor, the first inductor is respectively connected to the fourth switch tube and the first capacitor, and the boost chip is connected to the control end of the fourth switch tube and is used to control the conduction or shutdown of the fourth switch tube.

6. The voltage control circuit according to claim 1, characterized in that: It also includes a fifth switch tube, the input end of the fifth switch tube is connected to the output end of the voltage boost module and the stepless voltage regulation module, the output end of the fifth switch tube is connected to the ground end, and the piezoelectric resonance control module is connected to the control end of the fifth switch tube and is used to control the conduction or shutdown of the fifth switch tube.

7. The voltage control circuit according to claim 1, characterized in that: The stepless voltage regulation module includes an integration circuit unit, a voltage following unit and a current regulating unit. The voltage input end of the voltage following unit is connected to the piezoelectric resonance control module through the integration circuit unit, and the voltage output end of the voltage following unit is connected to the voltage boosting module through the current regulating unit.

8. The voltage control circuit according to claim 7, characterized in that: The voltage follower unit includes one of the following: An operational amplifier, wherein a voltage input terminal of the operational amplifier is connected to the integration circuit unit, and a voltage output terminal of the operational amplifier is connected to a voltage feedback terminal and is also connected to the current regulation unit; An isolation chip, wherein a voltage input terminal of the isolation chip is connected to the integration circuit unit, and a voltage output terminal of the isolation chip is connected to the current regulation unit.

9. The voltage control circuit according to claim 7, characterized in that: The current regulating unit includes a first resistor, a second resistor and a third resistor, one end of the first resistor is connected to the output end of the voltage boosting module, and the other end is connected to the ground end through the second resistor, and the common end of the first resistor and the second resistor is also connected to the voltage output end of the voltage following unit through the third resistor.

10. The voltage control circuit according to claim 7, characterized in that: The integration circuit unit includes a fourth resistor and a fourth capacitor, one end of the fourth resistor is connected to the output end of the piezoelectric resonance control module, and the other end is connected to the ground end through the fourth capacitor, and the common end of the fourth resistor and the fourth capacitor is also connected to the voltage input end of the voltage follower unit.

11. The voltage control circuit according to any one of claims 1 to 10, characterized in that: The inverter module includes a pulse cluster generating and amplifying unit and a coupling unit. The pulse cluster generating and amplifying unit is connected to the output end of the voltage boosting module, and is used to generate a pulse cluster signal, and amplify the pulse cluster signal according to the output voltage to obtain a high-voltage pulse cluster signal, wherein the amplitude of the high-voltage pulse cluster signal is the output voltage; the coupling unit is connected to the output end of the pulse cluster generating and amplifying unit, and is used to filter and transform the high-voltage pulse cluster signal to couple and form a full-cycle sinusoidal AC voltage.

12. The voltage control circuit according to claim 11, characterized in that: The pulse cluster generating and amplifying unit includes a driving circuit, a first switching amplifying branch and a second switching amplifying branch. The driving circuit is connected to the first switching amplifying branch and the second switching amplifying branch respectively. The first switching amplifying branch is used to output a first DC voltage signal, and the second switching amplifying branch is used to output a second DC voltage signal, wherein a 180° phase difference is formed between the first DC voltage signal and the second DC voltage signal.

13. The voltage control circuit according to claim 12, characterized in that: The coupling unit includes a first filter branch and a second filter branch, the first filter branch is connected to the first switch amplifier branch, and the second filter branch is connected to the second switch amplifier branch. The coupling unit is used to obtain a full-cycle AC voltage signal according to the first DC voltage signal and the second DC voltage signal by coupling.

14. An air conditioning device, characterized in that: It comprises a piezoelectric load and a voltage control circuit as claimed in any one of claims 1 to 13, wherein the piezoelectric load is arranged at the air outlet of the air conditioning equipment, and the voltage control circuit is connected to the piezoelectric load.

15. A voltage control method, characterized in that: Applicable to the voltage control circuit according to any one of claims 1 to 13, the control method comprising: The main control module starts the piezoelectric resonance control module in response to the start instruction; During the startup of the piezoelectric resonance control module, the main control module stops outputting the supply voltage; After the piezoelectric resonance control module is started, starting the voltage boost module; The piezoelectric resonance control module adjusts the duty cycle of the waveform signal output to the stepless voltage regulation module, so that the stepless voltage regulation module performs stepless voltage regulation on the output voltage according to the duty cycle.

16. The voltage control circuit according to claim 15, characterized in that: The step of starting the voltage boost module includes: The main control module outputs the supply voltage to the voltage boost module; The piezoelectric resonance control module sends an enable signal to the voltage boost module to start the voltage boost module.

17. The voltage control circuit according to claim 15, characterized in that: The piezoelectric resonance control module adjusts the duty cycle of the waveform signal output to the stepless voltage regulation module, including one of the following: In the startup phase of the output voltage, the piezoelectric resonance control module adjusts the output waveform signal to the stepless voltage regulation module, and reduces the duty cycle of the waveform signal at a first regulation rate, so that the output voltage rises from the start-up voltage to the startup voltage; In the output voltage regulation stage, the main control module determines the corresponding target output voltage according to the received voltage regulation instruction, and determines the target duty cycle according to the target output voltage, outputs the waveform signal of the target duty cycle to the stepless voltage regulation module through the piezoelectric resonance control module, and adjusts the duty cycle of the waveform signal at a second regulation rate, so that the output voltage is adjusted to the target output voltage; During the stop phase of the output voltage, the main control module receives a shutdown command, and increases the duty cycle of the waveform signal at a third adjustment rate through the piezoelectric resonance control module to adjust the output voltage to the stop voltage, and the main control module stops outputting the supply voltage.

18. A computer-readable storage medium, characterized in that: Computer executable instructions are stored, and the computer executable instructions are used to execute the voltage control method according to any one of claims 15 to 17.

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