Atomizing device and charge pump boost oscillation circuit for driving atomizing piece

Abstract

The application discloses an atomizing device and a charge pump voltage boosting oscillation circuit for driving an atomizing piece, and the circuit comprises a voltage doubling clock circuit, a charge pump voltage boosting circuit, an atomizing working clock circuit, a driving signal circuit and a full-bridge circuit. The atomizing piece is driven to work by the high-voltage alternating signal of the charge pump voltage boosting circuit and the full-bridge circuit. The output voltage and waveform are controllable, the output voltage amplitude and waveform are stable under any condition including an open circuit, the atomizing piece replacement and the same parameter device replacement have no influence, and the finished products are consistent under the same material. In addition, the circuit occupies a small area and is convenient for integrated packaging design.

Description

Technical Field

[0001] This invention belongs to the field of atomizing device technology, specifically, it relates to an atomizing device and a charge pump boost oscillation circuit for driving an atomizing plate. Background Technology

[0002] In consumer electronics, humidifiers, atomizers, and aroma diffusers all use atomizing plates to generate mist. Technically, this requires building a circuit to generate a high-frequency, high-voltage alternating signal, which is then converted into high-frequency vibrations of the atomizing plate to break water into tiny liquid particles that form mist.

[0003] Current atomizer drivers all use inductor or transformer solutions, utilizing the parasitic capacitance of the atomizer itself to form an LC resonance and generate a high-voltage alternating pulse waveform to drive the atomizer. This method makes the output voltage and waveform uncontrollable. With the atomizer open-circuited, the package voltage can rise to over 400V, far exceeding the atomizer's operating voltage. The waveform will resonate multiple times within one cycle. Replacing the atomizer or other components with the same parameters requires recalibration. Therefore, material selection requires careful control, especially for components like inductors and MOSFETs. Even slight differences in manufacturers or parameters can cause variations in output voltage, leading to deviations in atomization performance. Even with the same materials, different finished products will exhibit deviations, and different modules using the same materials will have poor waveform consistency. Furthermore, this solution occupies a large area and cannot be miniaturized or integrated.

[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Summary of the Invention

[0005] This invention proposes an atomizing device and a charge pump boost oscillation circuit for driving the atomizing plate, in order to solve the technical problems of the inability to control the output voltage and waveform of the prior art and the great influence of device parameters.

[0006] To achieve the above-mentioned invention / design objectives, the present invention adopts the following technical solution: A charge pump boost oscillation circuit for driving an atomizing plate, the circuit comprising: A voltage doubler clock circuit is used to generate a high-frequency square wave clock signal to drive a charge pump boost circuit. The charge pump boost circuit includes a charge pump boost drive section, a charge pump voltage multiplier boost section, and a voltage regulation feedback section; The charge boost drive section is used to convert the high-frequency square wave clock signal into a drive signal that is complementary to it. The charge pump voltage multiplier section includes several stages of diodes connected in sequence. The first stage diode is connected to the input voltage through a switching element. The diodes are alternately connected to a high-frequency square wave clock signal and a complementary drive signal through capacitors. The output of the last stage diode is grounded through an output capacitor. The last stage diode outputs the working voltage. The voltage regulation feedback section is used to detect the operating voltage and feed it back to the switching element to control the on / off state of the switching element; The atomizing clock circuit is used to generate the high-frequency square wave signal required by the atomizing plate; A drive signal circuit is used to amplify the signal output by the atomizing clock circuit to a drive signal for the full-bridge circuit. A full-bridge circuit is used to convert the operating voltage into a high-frequency alternating voltage to drive the atomizing plate to vibrate.

[0007] As described above, in the charge pump boost oscillation circuit for driving the atomizing plate, the voltage regulation feedback section includes a comparator, which is used to compare the operating voltage with the input voltage and control the on / off state of the switching element.

[0008] In the charge pump boost oscillation circuit for driving the atomizing plate as described above, the comparator is used to control the switching element to open when the operating voltage is higher than the normal operating voltage, and to control the switching element to open when the operating voltage is lower than the normal operating voltage.

[0009] In the charge pump boost oscillation circuit for driving the atomizing plate as described above, the switching element is a MOSFET.

[0010] As described above, the charge pump boost oscillation circuit for driving the atomizing plate includes a transistor and a push-pull pair. The transistor is switched on and off according to the high-frequency square wave clock signal, and the push-pull pair is used to amplify the signal from the transistor and output complementary drive signals.

[0011] As described above, the charge pump boost oscillation circuit for driving the atomizing plate includes a first MOS transistor and a second MOS transistor forming the upper bridge arm, and a third MOS transistor and a fourth MOS transistor forming the lower bridge arm.

[0012] As described above, the charge pump boost oscillation circuit for driving the atomizing plate includes an upper bridge arm driving circuit and a lower bridge arm driving circuit. The upper bridge arm driving circuit is used to drive the first MOS transistor and the second MOS transistor, and the lower bridge arm driving circuit is used to drive the third MOS transistor and the fourth MOS transistor.

[0013] As described above, the charge pump boost oscillation circuit for driving the atomizing plate includes a 555 timer in both the voltage doubler clock circuit and the atomization clock circuit.

[0014] As described above, the charge pump boost oscillation circuit for driving the atomizing plate includes a number of diodes connected in sequence. An odd-numbered diode is connected to an even-numbered diode next to it, and an even-numbered diode is connected to an odd-numbered diode next to it. The odd-numbered capacitors are connected to a high-frequency square wave clock signal, and the even-numbered capacitors are connected to a complementary drive signal.

[0015] An atomizing device includes an atomizing plate, the atomizing device including the above-described charge pump boost oscillation circuit for driving the atomizing plate.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are as follows: The charge pump boost oscillation circuit for driving the atomizing plate includes a voltage doubler clock circuit, a charge pump boost circuit, an atomization working clock circuit, a drive signal circuit, and a full-bridge circuit. The voltage doubler clock circuit is used to generate a high-frequency square wave clock signal to drive the charge pump boost circuit. The charge pump boost circuit includes a charge pump boost drive section, a charge pump voltage doubler boost section, and a voltage regulation feedback section. The charge pump boost drive section is used to convert the high-frequency square wave clock signal into a complementary drive signal. The charge pump voltage doubler boost section includes several stages of diodes connected in sequence, the first stage... The diodes are connected to the input voltage via switching elements. The diodes are sequentially and alternately connected to a high-frequency square wave clock signal and a complementary drive signal via capacitors. The output of the last stage diode is grounded through an output capacitor and outputs the working voltage. A voltage regulation feedback section detects the working voltage and feeds it back to the switching elements to control their on / off state. The atomization clock circuit generates the high-frequency square wave signal required by the atomizing element. The drive signal circuit amplifies the signal output from the atomization clock circuit to drive the full-bridge circuit. The full-bridge circuit converts the working voltage into a high-frequency alternating voltage to drive the atomizing element's vibration. This invention drives the atomizing element's operation through a charge pump boost circuit and a high-voltage alternating signal from the full-bridge circuit. The output voltage and waveform are controllable; the output voltage amplitude and waveform remain stable under any conditions, including open circuits; it is unaffected by atomizing element replacement or substitution of components with the same parameters; and the finished product exhibits good consistency with the same materials. Furthermore, the circuit occupies a small area and is easy to integrate into a package design.

[0017] The atomizing device of this invention includes an atomizing plate and the aforementioned charge pump boost oscillation circuit for driving the atomizing plate. The atomizing device drives the atomizing plate through a high-voltage alternating signal from the charge pump boost circuit and a full-bridge circuit. The output voltage and waveform are controllable; the output voltage amplitude and waveform remain stable under any conditions, including open circuits; it is unaffected by atomizing plate replacement or substitution of components with the same parameters; and the finished product exhibits good consistency under the same materials. Furthermore, the circuit occupies a small area and is easy to integrate into a package design.

[0018] Other features and advantages of the present invention will become clearer after reading the detailed embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the charge pump boost oscillation circuit for driving the atomizing plate according to a specific embodiment of the present invention.

[0021] Figure 2 This is a diagram of a voltage doubler clock circuit and a charge pump boost circuit according to a specific embodiment of the present invention.

[0022] Figure 3 This is a specific embodiment of the atomization clock circuit, drive signal circuit, and full-bridge circuit diagram of the present invention. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. In the description of embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0026] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0027] In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0028] Based on the shortcomings of existing inductor or transformer solutions, an atomizing device and a charge pump boost oscillation circuit for driving the atomizing plate are proposed. This device is easy to integrate, has a small footprint, stable output voltage and waveform, is not affected by device parameters, has better consistency, and the positive and negative half-wave amplitudes are equivalent, eliminating the multiple resonant oscillation waveforms formed by inductors or transformers and capacitors.

[0029] The key to the charge pump boost oscillation circuit used to drive the atomizing plate is to use a capacitor instead of an inductor or transformer to drive the atomizing plate, to use a charge pump boost method to provide the required operating voltage for the atomizing plate, and to convert the DC voltage into the alternating pulse signal required to drive the atomizing plate through a full-bridge circuit.

[0030] The following is combined Figures 1-3 A detailed explanation of the charge pump boost oscillation circuit used to drive the atomizing plate: like Figure 1 As shown, a charge pump boost oscillation circuit for driving an atomizing plate includes a voltage doubler clock circuit, a charge pump boost circuit, an atomization working clock circuit, a drive signal circuit, and a full-bridge circuit.

[0031] The voltage doubler clock circuit is used to generate a high-frequency square wave clock signal to drive the charge pump boost circuit.

[0032] The charge pump boost circuit includes a charge pump boost drive section, a charge pump voltage multiplier boost section, and a voltage regulation feedback section.

[0033] The charge boost drive section is used to convert a high-frequency square wave clock signal into a complementary drive signal.

[0034] The charge pump voltage multiplier boost section includes several stages of diodes connected in sequence. The first stage diode is connected to the input voltage through a switching element. The diodes are alternately connected to a high-frequency square wave clock signal and a complementary drive signal through capacitors. The output of the last stage diode is grounded through an output capacitor, and the last stage diode outputs the operating voltage.

[0035] The voltage regulation feedback section is used to detect the operating voltage and feed it back to the switching element to control the switching element's on / off state.

[0036] The atomizing clock circuit is used to generate the high-frequency square wave signal required by the atomizing plate.

[0037] The drive signal circuit is used to amplify the signal output by the atomization clock circuit to the drive signal for the full-bridge circuit.

[0038] The full-bridge circuit is used to convert the working voltage into a high-frequency alternating voltage to drive the atomizing plate to vibrate.

[0039] This embodiment uses a charge pump boost oscillation circuit to drive the atomizing plate. The atomizing plate is driven by a high-voltage alternating signal from the charge pump boost circuit and a full-bridge circuit. The output voltage and waveform are controllable, and the output voltage amplitude and waveform remain stable under any conditions, including open circuits. It is unaffected by atomizing plate replacement or substitution of components with the same parameters, and the finished product exhibits good consistency under the same materials. Furthermore, due to the use of a charge pump boost circuit, the entire circuit occupies a small area and is easy to integrate into a package design.

[0040] The charge pump boost oscillation circuit for driving the atomizing plate includes Figure 2 The voltage doubler clock circuit, charge pump boost circuit, and shown are shown. Figure 3 The diagram shows the atomizing clock circuit, drive signal circuit, and full-bridge circuit. The charge pump boost oscillation circuit for driving the atomizing plate is divided into two main parts, which are used to generate the atomizing plate's operating voltage and convert the operating voltage into a high-frequency alternating signal for the atomizing plate's operation.

[0041] Figure 2 The voltage doubler clock circuit and charge pump boost circuit shown are used to generate the working voltage of the atomizing plate by driving the charge pump boost circuit through the voltage doubler clock circuit. Figure 3 The atomizing clock circuit, drive signal circuit, and full-bridge circuit shown are used to drive the full-bridge circuit after being amplified by the drive signal circuit. The full-bridge circuit converts the working voltage of the atomizing sheet into the required high-frequency, alternating oscillation signal and provides it to the atomizing sheet.

[0042] like Figure 2 As shown, the voltage doubler clock circuit includes a 555 timer U2. The 555 timer U2 and peripheral components form a clock oscillation circuit used to generate a high-frequency square wave clock signal. In this embodiment, the 555 timer U2 can generate a 5V, 10kHz clock signal. The clock signal is output from pin 3 (OUT) of the 555 timer U2, providing clock drive for the charge pump boost circuit.

[0043] Resistor R7, resistor R8, and capacitor C9 are timing components that determine the frequency and duty cycle of the square wave output by the 555 timer U2. By adjusting the resistance and capacitance values ​​of these three components, the 555 timer U2 can be controlled to output a 10kHz square wave.

[0044] Capacitor C10 is a decoupling capacitor connected to pin 5 (CONT) of the 555 timer U2. It is used to filter out power supply noise, stabilize the reference voltage of the internal comparator, and ensure the stability of the output waveform.

[0045] After power-on, the 555 timer U2 charges and discharges the capacitor C9 through resistors R7 and R8 to output a high-frequency square wave clock signal, which serves as the drive signal for the charge pump boost circuit.

[0046] The charge boost drive section includes a transistor and a push-pull pair. The transistor is switched on and off according to a high-frequency square wave clock signal, and the push-pull pair is used to amplify the signal from the transistor and output complementary drive signals.

[0047] The charge boost drive section converts the high-frequency square wave clock signal output by the 555 timer U2 into two complementary drive signals, which drive the upper and lower nodes of the charge pump respectively.

[0048] Specifically, the charge boost drive section includes transistor Q2, and the push-pull pair includes transistors Q1 and Q3. Transistor Q2 is an NPN transistor, transistor Q1 is an NPN transistor, and transistor Q3 is a PNP transistor.

[0049] When the 555 timer U2 outputs a high level, transistor Q2 is turned on; when the 555 timer U2 outputs a low level, transistor Q2 is turned off.

[0050] Transistors Q1 and Q3 amplify the signal from transistor Q2, outputting complementary drive signals to control the level of the lower node of the charge pump, forming a phase difference with the upper node of the charge pump, allowing the capacitor of the charge pump to charge and discharge alternately.

[0051] The charge pump voltage multiplier boost section includes several diodes connected in sequence. Odd-numbered diodes are connected to even-numbered diodes in the next stage next to them, and even-numbered diodes are connected to odd-numbered diodes in the next stage next to them. Odd-numbered capacitors are connected to a high-frequency square wave clock signal, and even-numbered capacitors are connected to a complementary drive signal.

[0052] Specifically, the charge pump voltage multiplier boost section includes diodes D1, D2, D3, D4, D5, D6, D7, and D8 connected in sequence. Capacitor C1 is connected between diodes D1 and D2, capacitor C2 between diodes D2 and D3, capacitor C3 between diodes D3 and D4, capacitor C4 between diodes D4 and D5, capacitor C5 between diodes D5 and D6, capacitor C6 between diodes D6 and D7, and capacitor C7 between diodes D7 and D8. The other ends of capacitors C1, C3, C5, and C7 are connected to the output of 555 timer U2, and the other ends of capacitors C2, C4, and C6 are connected between transistors Q1 and Q3. The output of diode D8 outputs a working voltage of 36V, and the output of diode D8 is grounded through output capacitor C8.

[0053] The voltage regulation feedback section includes comparator U1A, which is used to compare the operating voltage with the input voltage and control the switching elements.

[0054] Comparator U1A is used to control the switching element to open when the operating voltage is higher than the normal operating voltage of 36V, and to control the switching element to open when the operating voltage is lower than the normal operating voltage of 36V, so as to ensure the stability of the operating voltage output.

[0055] The switching element is MOSFET P1, which is an N-channel MOSFET.

[0056] The first input terminal of comparator U1A is connected to the operating voltage through voltage divider resistors R1 and R2, and the second input terminal is connected to the input voltage +5V through voltage divider resistors R3 and R4. The output terminal of comparator U1A is connected to the input voltage +5V through resistors R6 and R5. The gate of MOSFET P1 is connected between resistors R6 and R5, the drain of MOSFET P1 is connected to the input voltage +5V, and the source of MOSFET P1 is connected to the positive terminal of diode D1.

[0057] When the voltage at the first input terminal of comparator U1A is higher than the voltage at the second input terminal, MOSFET P1 is turned off, causing the output operating voltage to drop, thereby adjusting the operating voltage to stabilize it at 36V. When the voltage at the first input terminal of comparator U1A is lower than the voltage at the second input terminal, MOSFET P1 is turned on, and the input voltage +5V is applied to the positive terminal of diode D1, causing the output operating voltage to rise, thereby adjusting the operating voltage to stabilize it at 36V.

[0058] Diodes D1-D8 and capacitors C1-C8 form a charge pump boost circuit using a capacitor voltage multiplier method, boosting the voltage from 5V to the 36V required for the atomizing plate's operation. A voltage feedback loop is formed through U1A and resistors R1-R4. When the output voltage exceeds 36V, MOSFET P1 is turned off, causing the output operating voltage to drop and thus stabilizing it at 36V. The charge pump boost drive section uses the high-frequency square wave clock signal output from the 555 timer U2 to form a complementary waveform, providing the necessary complementary clock drive signal for the charge pump boost circuit.

[0059] like Figure 3 As shown, the atomizing clock circuit includes a 555 timer U3. The 555 timer U3 and peripheral components form a clock oscillation circuit used to generate a high-frequency square wave clock signal. In this embodiment, the 555 timer U3 can generate a 5V, 108kHz atomizing chip clock signal. The atomizing chip clock signal is output from pin 3 (OUT).

[0060] Resistor R18, resistor R20, and capacitor C11 are timing components that determine the frequency and duty cycle of the square wave output by the 555 timer U3. By adjusting the resistance and capacitance values ​​of these three components, the 555 timer U3 can be controlled to output a 108kHz square wave.

[0061] Capacitor C12 is a decoupling capacitor connected to pin 5 (CONT) of the 555 timer U3. It is used to filter out power supply noise, stabilize the reference voltage of the internal comparator, and ensure the stability of the output waveform.

[0062] After power-on, the 555 timer U3 charges and discharges the capacitor C11 through resistors R18 and R20 to output the clock signal for the atomizing plate.

[0063] The full-bridge circuit includes a first MOSFET N1 and a second MOSFET P2 forming the upper bridge arm, and a third MOSFET P3 and a fourth MOSFET N2 forming the lower bridge arm. The full-bridge circuit converts the 36V high voltage obtained by the charge pump boost circuit into a high-frequency alternating voltage to drive the atomizing plate to vibrate.

[0064] The drains of the second MOSFET P2 and the third MOSFET P3 are connected to a 36V power supply, and their sources are connected to the two ends of the atomizing plate, respectively. When they are turned on, one end of the atomizing plate is pulled to 36V.

[0065] The sources of the first MOSFET N1 and the fourth MOSFET N2 are grounded, and their drains are connected to the two ends of the atomizing plate, respectively. When the atomizing plate is turned on, one end of the atomizing plate is pulled to ground.

[0066] Resistors R13, R14, R22, and R23 are gate current-limiting resistors, which limit the drive current of the gates of the second MOSFET P2 and the third MOSFET P3, respectively, to prevent overcurrent damage and suppress gate oscillation.

[0067] The driving signal circuit includes an upper bridge arm driving circuit and a lower bridge arm driving circuit. The upper bridge arm driving circuit is used to drive the first MOSFET N1 and the second MOSFET P2, and the lower bridge arm driving circuit is used to drive the third MOSFET P3 and the fourth MOSFET N2.

[0068] The upper bridge arm drive circuit includes resistors R19, R21, R15, R13, R14, transistors Q4, Q5, Q6, resistors R16, and R17.

[0069] Resistors R19 and R21 are voltage divider resistors. R19 sends the output signal of the 555 timer U3 to the subsequent stage, and R21 is a pull-down resistor to ensure that the transistor Q5 is reliably cut off when the level is low.

[0070] Transistor Q5 is the first-stage amplifier, amplifying the square wave signal output from the 555 timer U3 to drive the subsequent transistor Q4.

[0071] Transistor Q4 switches on and off based on the signal output from transistor Q5, thereby controlling the switching on and off of the second MOSFET P2.

[0072] Transistor Q6 switches on and off based on the square wave signal output by timer U3 of 555, thereby controlling the switching on and off of the first MOSFET N1.

[0073] Resistors R19, R21, transistors Q5, R15, Q4, R13, and R14 form the driving circuit for the second MOSFET P2. Resistors R19, R21, transistor Q6, R16, and R17 form the driving circuit for the first MOSFET N1. When the 555 timer U3 outputs a high level, the second MOSFET P2 is turned on and the first MOSFET N1 is turned off; when the 555 timer U3 outputs a low level, the second MOSFET P2 is turned off and the first MOSFET N1 is turned on.

[0074] The lower bridge arm drive circuit includes resistors R28, R29, R26, transistors Q10 and Q8, resistors R24 and Q7, resistors R22 and R23, transistor Q9, resistors R25 and R27.

[0075] Resistors R28 and R29 are voltage divider resistors. R28 sends the output signal of the 555 timer U3 to the subsequent stage, and resistor R29 is a pull-down resistor to ensure that the transistor Q10 is reliably cut off when the level is low.

[0076] Transistor Q10 is the first-stage amplifier, amplifying the square wave signal output from the 555 timer U3 to drive the subsequent transistors Q9 and Q8.

[0077] Transistor Q9 switches on and off based on the signal output from transistor Q10, thereby controlling the switching on and off of the fourth MOSFET N2.

[0078] Transistor Q8 switches on and off based on the signal output from transistor Q10, thereby controlling the switching on and off of transistor Q7.

[0079] Transistor Q7 controls the switching on and off of the third MOSFET P3.

[0080] Resistors R28, R29, R26, transistors Q10 and Q8, resistors R24 and Q7, resistors R22 and R23 form the drive circuit for the third MOSFET P3. Resistors R28, R29, R26, transistors Q10 and Q9, resistors R25 and R27 form the drive circuit for the fourth MOSFET N2. When the 555 timer U3 outputs a high level, the third MOSFET P3 is off and the fourth MOSFET N2 is on; when the 555 timer U3 outputs a low level, the third MOSFET P3 is on and the fourth MOSFET N2 is off.

[0081] The working process of the charge pump boost oscillation circuit driving the atomizing plate is as follows: 1. Voltage doubler clock generation: 555 timer U2 generates a 10kHz square wave clock signal.

[0082] 2. Drive Amplification: The 10kHz square wave clock signal passes through the charge boost drive section to generate two complementary drive signals, which drive the upper and lower nodes of the charge pump respectively.

[0083] 3. Charge pump boost: The drive signal controls the capacitor to charge and discharge alternately, and the charge is transferred unidirectionally through the diode. Each stage boosts the voltage by about 5V. After multiple stages of voltage multiplication, the output working voltage is about 36V.

[0084] 4. Voltage regulation feedback: Comparator U1A detects the output operating voltage and stabilizes the output through voltage divider feedback to prevent the voltage from being too high or fluctuating too much.

[0085] 5. Atomization clock generation: The 555 timer U3 generates a 108kHz high-frequency square wave signal as the driving clock for the atomization circuit.

[0086] 6. Drive Amplification: A 108kHz high-frequency square wave signal is sent to the drive signal circuit and amplified to a sufficient gate signal to drive the MOS transistor, providing complementary drive for the full-bridge circuit.

[0087] 7. Full-bridge circuit power amplification: The four MOSFETs of the full-bridge circuit conduct alternately at a frequency of 108kHz, converting the 36V high voltage into a high-frequency alternating voltage, which is applied to both ends of the atomizing plate.

[0088] 8. Atomizing vibration: The atomizing plate resonates under the action of high-frequency alternating voltage, generating high-frequency mechanical vibration, which atomizes water into water mist.

[0089] This embodiment also proposes an atomizing device, including an atomizing plate, wherein the atomizing device includes the above-mentioned charge pump boost oscillation circuit for driving the atomizing plate.

[0090] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by the present invention.

Claims

1. A charge pump boost oscillation circuit for driving an atomizing plate, characterized in that, The circuit includes: A voltage doubler clock circuit is used to generate a high-frequency square wave clock signal to drive a charge pump boost circuit. The charge pump boost circuit includes a charge pump boost drive section, a charge pump voltage multiplier boost section, and a voltage regulation feedback section; The charge boost drive section is used to convert the high-frequency square wave clock signal into a drive signal that is complementary to it. The charge pump voltage multiplier section includes several stages of diodes connected in sequence. The first stage diode is connected to the input voltage through a switching element. The diodes are alternately connected to a high-frequency square wave clock signal and a complementary drive signal through capacitors. The output of the last stage diode is grounded through an output capacitor. The last stage diode outputs the working voltage. The voltage regulation feedback section is used to detect the operating voltage and feed it back to the switching element to control the on / off state of the switching element; The atomizing clock circuit is used to generate the high-frequency square wave signal required by the atomizing plate; A drive signal circuit is used to amplify the signal output by the atomizing clock circuit to a drive signal for the full-bridge circuit. A full-bridge circuit is used to convert the operating voltage into a high-frequency alternating voltage to drive the atomizing plate to vibrate.

2. The charge pump boost oscillation circuit for driving an atomizing plate according to claim 1, characterized in that, The voltage regulation feedback section includes a comparator, which is used to compare the operating voltage with the input voltage and control the switching element's on / off state.

3. The charge pump boost oscillation circuit for driving an atomizing plate according to claim 2, characterized in that, The comparator is used to control the switching element to open when the operating voltage is higher than the normal operating voltage, and to control the switching element to open when the operating voltage is lower than the normal operating voltage.

4. The charge pump boost oscillation circuit for driving an atomizing plate according to claim 2, characterized in that, The switching element is a MOSFET.

5. The charge pump boost oscillation circuit for driving an atomizing plate according to claim 1, characterized in that, The charge boost drive section includes a transistor and a push-pull pair. The transistor is switched on and off according to the high-frequency square wave clock signal, and the push-pull pair is used to amplify the signal from the transistor and output complementary drive signals.

6. The charge pump boost oscillation circuit for driving an atomizing plate according to claim 1, characterized in that, The full-bridge circuit includes a first MOS transistor and a second MOS transistor forming the upper bridge arm, and a third MOS transistor and a fourth MOS transistor forming the lower bridge arm.

7. The charge pump boost oscillation circuit for driving an atomizing plate according to claim 6, characterized in that, The driving signal circuit includes an upper bridge arm driving circuit and a lower bridge arm driving circuit. The upper bridge arm driving circuit is used to drive the first MOSFET and the second MOSFET, and the lower bridge arm driving circuit is used to drive the third MOSFET and the fourth MOSFET.

8. The charge pump boost oscillation circuit for driving an atomizing plate according to claim 1, characterized in that, Both the voltage doubler clock circuit and the atomization clock circuit include a 555 timer.

9. The charge pump boost oscillation circuit for driving an atomizing plate according to any one of claims 1-8, characterized in that, The charge pump voltage multiplier boost section includes a number of diodes connected in sequence. Odd-numbered diodes are connected to their adjacent next-level even-numbered diodes with odd-numbered capacitors, and even-numbered diodes are connected to their adjacent next-level odd-numbered diodes with even-numbered capacitors. The odd-numbered capacitors are connected to a high-frequency square wave clock signal, and the even-numbered capacitors are connected to a complementary drive signal.

10. An atomizing device, comprising an atomizing plate, characterized in that, The atomizing device includes the charge pump boost oscillation circuit for driving the atomizing plate as described in any one of claims 1-9.

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