CN109007974A - A kind of ultrasonic electronic cigarette circuit and the ultrasonic electronic cigarette - Google Patents

Abstract

The invention discloses an ultrasonic electronic cigarette circuit and an electronic cigarette, which include an ultrasonic atomizing sheet, a control circuit, a first drive circuit, a first oscillation circuit and a power supply circuit. The first end of the atomizing sheet is connected, and also includes a second drive circuit and a second oscillating circuit, and the control circuit is connected to the second end of the ultrasonic atomizing sheet through the second driving circuit and the second oscillating circuit; the first oscillating circuit includes the second A MOS tube, a first inductor and a first capacitor, the gate of the first MOS tube is connected to the output terminal of the first drive circuit, the first inductor is connected between the power supply circuit and the drain of the first MOS tube, and the first capacitor Connected between the drain of the first MOS transistor and the ground, the drain of the first MOS transistor is connected to the first end of the ultrasonic atomizing sheet. The invention makes both ends of the ultrasonic atomizing sheet work at the same time, has high working efficiency, low calorific value, low energy loss, and long service life; it is powered by a single lithium battery, and has low cost and small volume.

Description

An ultrasonic electronic cigarette circuit and the ultrasonic electronic cigarette

technical field

The invention belongs to the technical field of electronic cigarettes, and in particular relates to an ultrasonic electronic cigarette circuit and the ultrasonic electronic cigarette.

Background technique

The existing ultrasonic electronic cigarette circuit is only driven by one way, that is, the control circuit is electrically connected to one end of the ultrasonic atomizing sheet through the driving circuit and the oscillating circuit in turn, so that the ultrasonic electronic cigarette ultrasonic atomizing sheet cannot work at full capacity, and the ultrasonic atomizing sheet cannot work at full capacity. It can only oscillate in half-wave, low efficiency, severe heat generation, and rapid loss of ultrasonic atomizing sheets. At the same time, the power supply circuit includes multiple lithium batteries, and the working voltage and oscillation voltage with different voltage values are respectively provided by different lithium battery packs, so the cost is high and the volume is large.

Contents of the invention

The existing ultrasonic electronic cigarette is only driven by one way and cannot work at full load. The ultrasonic atomizing sheet can only oscillate in half-wave, which has low efficiency, serious heat generation, and fast loss of ultrasonic atomizing sheet; it contains multiple lithium batteries, which are costly and bulky . The object of the present invention is to provide an ultrasonic electronic cigarette circuit and the ultrasonic electronic cigarette in view of the above-mentioned deficiencies in the prior art. Both ends of the ultrasonic atomizing sheet work at the same time, and the ultrasonic atomizing sheet has high working efficiency, low calorific value, and energy loss. Low, long service life, low cost, small size.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

An ultrasonic electronic cigarette circuit, including an ultrasonic atomizing sheet, a control circuit, a first drive circuit, a first oscillating circuit, and a power supply circuit. The first end is electrically connected, the control circuit, the first driving circuit and the first oscillation circuit are all electrically connected to the power supply circuit, and its structural feature is that it also includes a second driving circuit and a second oscillation circuit. The circuit, the second oscillating circuit are electrically connected to the second end of the ultrasonic atomizing sheet, and the second drive circuit and the second oscillating circuit are electrically connected to the power supply circuit; the first oscillating circuit includes a first MOS tube, a first inductance and The first capacitor, the gate of the first MOS transistor is connected to the output terminal of the first drive circuit, the source of the first MOS transistor is grounded, the first inductor is connected between the power supply circuit and the drain of the first MOS transistor, and the first The capacitor is connected between the drain of the first MOS transistor and the ground, and the drain of the first MOS transistor is electrically connected to the first end of the ultrasonic atomizing sheet.

With the above structure, the power supply circuit provides power for the driving circuit and the oscillating circuit, the driving circuit is used for switching and driving the oscillating circuit, and the oscillating circuit makes the inductance and capacitance form LC resonance through the driving signal provided by the driving circuit. The control circuit simultaneously generates drive signals through the first drive circuit and the second drive circuit to prompt the ultrasonic atomizer to atomize the e-liquid and generate smoke. Since the two ends of the ultrasonic atomizing sheet work at the same time, the ultrasonic atomizing sheet is in a resonant state at this time, which greatly improves the working efficiency of the ultrasonic atomizing sheet, and makes the ultrasonic electronic cigarette generate the least amount of heat and power when producing the same amount of smoke. Lower power consumption and longer service life.

As a preferred manner, the second oscillating circuit includes a second MOS transistor, a second inductor and a second capacitor, the gate of the second MOS transistor is connected to the output terminal of the second drive circuit, and the source of the second MOS transistor Grounded, the second inductance is connected between the power supply circuit and the drain of the second MOS tube, the second capacitor is connected between the drain of the second MOS tube and the ground, the drain of the second MOS tube is connected to the ultrasonic atomizing sheet The second end is electrically connected.

As a preferred manner, the control circuit controls the first driving circuit and the second driving circuit to respectively output driving levels with opposite phases and equal frequencies to the ultrasonic atomizing sheet at the same time.

With the above structure, when the first drive circuit outputs a high level, the second drive circuit outputs a low level with the same frequency; when the first drive circuit outputs a low level, the second drive circuit outputs a high level with the same frequency, thus Circular work makes the working efficiency of the ultrasonic atomizing sheet optimal and the amount of smoke is maximum.

Further, the power supply circuit includes a single-cell lithium battery, a charging and discharging circuit, and a boost circuit, and the boosting circuit includes a first boosting circuit and a second boosting circuit, and the single-cell lithium battery is respectively charged and discharged through the charging and discharging circuit. The first boost circuit and the second boost circuit are electrically connected, the control circuit, the first drive circuit, and the second drive circuit are all electrically connected to the output end of the first boost circuit, and the first oscillation circuit and the second The two oscillating circuits are electrically connected with the output terminals of the second boosting circuit.

With the above structure, a single lithium battery can be used to power the entire ultrasonic electronic cigarette circuit, resulting in lower cost, higher efficiency and smaller volume.

Further, it also includes a voltage and current detection circuit, the output terminal of the voltage and current detection circuit is electrically connected to the control circuit; the voltage and current detection circuit is connected between the ultrasonic atomizing sheet and the first oscillation circuit, or the voltage and current detection circuit Connected between the ultrasonic atomizing sheet and the second oscillating circuit.

With the above structure, the voltage and current detection circuit detects the working voltage and current of the ultrasonic atomizing sheet, and the voltage and current detection circuit feeds back the detected voltage value and current value to the control circuit, and the control circuit according to the peak-to-peak voltage and peak-to-peak current , can quickly find the resonance frequency of the ultrasonic atomizing sheet, and then control the work of the ultrasonic atomizing sheet according to the resonance frequency, further improving the working efficiency of the ultrasonic atomizing sheet.

Further, a first resistor is connected between the second drive circuit and the second oscillating circuit, a second resistor is connected between the first drive circuit and the first oscillating circuit, and the second drive circuit and the control circuit A third resistor is connected between them, and a fourth resistor is connected between the first drive circuit and the control circuit.

The first resistor, the second resistor, the third resistor and the fourth resistor act as a current limiter to prevent the front-end circuit from being burned due to a short circuit of the ultrasonic atomizing sheet.

As a preferred manner, the first driving circuit includes a first NPN transistor, a first PNP transistor, and a third capacitor, and the bases of the first NPN transistor and the first PNP transistor are connected to each other. The control circuit is connected, the emitter of the first NPN transistor and the emitter of the first PNP transistor are connected to the first oscillation circuit, the collector of the first NPN transistor is connected to the power circuit and grounded through the third capacitor, The collector of the first PNP transistor is grounded.

As a preferred manner, the second drive circuit includes a second NPN transistor, a second PNP transistor, and a fourth capacitor, and the bases of the second NPN transistor and the second PNP transistor are connected to each other. The control circuit is connected, the emitter of the second NPN transistor and the emitter of the second PNP transistor are connected to the second oscillation circuit, the collector of the second NPN transistor is connected to the power circuit and grounded through the fourth capacitor, The collector of the second PNP transistor is grounded.

Further, it also includes a fifth resistor, a sixth resistor, a seventh resistor and an eighth resistor, one end of the fifth resistor is connected between the second drive circuit and the second oscillation circuit, and the other end of the fifth resistor is grounded; One end of the sixth resistor is connected between the control circuit and the first drive circuit, and the other end of the sixth resistor is grounded; one end of the seventh resistor is connected between the control circuit and the second drive circuit, and the other end of the seventh resistor is grounded; One end of the eighth resistor is connected between the first driving circuit and the first oscillation circuit, and the other end of the eighth resistor is grounded.

The sixth resistor and the seventh resistor can function to increase low-level driving capability.

As a preferred manner, the ultrasonic atomizing sheet is a non-porous piezoelectric ceramic atomizing sheet.

Based on the same inventive concept, the present invention also provides an ultrasonic electronic cigarette, including the ultrasonic electronic cigarette circuit.

Compared with the prior art, the present invention enables both ends of the ultrasonic atomizing sheet to work at the same time. The ultrasonic atomizing sheet has high working efficiency, low calorific value, low energy loss, and long service life; it is powered by a single lithium battery, with low cost and small volume. Small.

Description of drawings

FIG. 1 is a schematic diagram of a block structure of Embodiment 1 of the present invention.

Fig. 2 is a circuit diagram of Embodiment 1.

Fig. 3 is a schematic block diagram of the second embodiment of the present invention.

4 to 8 form a circuit diagram of the second embodiment.

Fig. 9 is a working flow chart of the second embodiment.

Among them, 1 is the ultrasonic atomizing sheet, 2 is the control circuit, 3 is the first driving circuit, 4 is the first oscillation circuit, 5 is the power supply circuit, 6 is the second driving circuit, 7 is the second oscillation circuit, 8 is the single lithium battery, 9 is the charging and discharging circuit, 10 is the first boost circuit, 11 is the second boost circuit, 12 is the voltage and current detection circuit, L1 is the first inductor, L2 is the second inductor, C1 is the first capacitor , C2 is the second capacitor, C3 is the third capacitor, C4 is the fourth capacitor, Q1 is the first NPN transistor, Q2 is the second NPN transistor, Q3 is the first MOS transistor, Q4 is the second MOS transistor, Q5 is the first PNP transistor, Q6 is the second PNP transistor, R1 is the first resistor, R2 is the second resistor, R3 is the third resistor, R4 is the fourth resistor, R5 is the fifth resistor, R6 is the sixth resistor , R7 is the seventh resistor, and R8 is the eighth resistor.

Detailed ways

Embodiment one

As shown in Figure 1 and Figure 2, the ultrasonic electronic cigarette circuit includes an ultrasonic atomizing sheet 1, a control circuit 2, a first drive circuit 3, a first oscillation circuit 4 and a power supply circuit 5, and the control circuit 2 sequentially passes through the first drive The circuit 3, the first oscillating circuit 4 are electrically connected to the first end of the ultrasonic atomizing sheet 1, the control circuit 2, the first driving circuit 3 and the first oscillating circuit 4 are all electrically connected to the power supply circuit 5, and also include a second driving circuit 6 and a second oscillating circuit 7, the control circuit 2 is electrically connected to the second end of the ultrasonic atomizing sheet 1 through the second driving circuit 6 and the second oscillating circuit 7 in turn, the second driving circuit 6 and the second oscillating circuit 7 Both are electrically connected to the power circuit 5 . The ultrasonic atomizing sheet 1 is a non-porous piezoelectric ceramic atomizing sheet.

The first oscillating circuit 4 includes a first MOS transistor Q3, a first inductor L1 and a first capacitor C1, the gate of the first MOS transistor Q3 is connected to the output terminal of the first drive circuit 3, and the source of the first MOS transistor Q3 ground, the first inductor L1 is connected between the power supply circuit 5 and the drain of the first MOS transistor Q3, the first capacitor C1 is connected between the drain of the first MOS transistor Q3 and the ground, and the drain of the first MOS transistor Q3 The pole is electrically connected to the first end of the ultrasonic atomizing sheet 1 .

The second oscillating circuit 7 includes a second MOS transistor Q4, a second inductor L2 and a second capacitor C2, the gate of the second MOS transistor Q4 is connected to the output terminal of the second drive circuit 6, and the source of the second MOS transistor Q4 The pole is grounded, the second inductance L2 is connected between the power supply circuit 5 and the drain of the second MOS transistor Q4, the second capacitor C2 is connected between the drain of the second MOS transistor Q4 and the ground, and the drain of the second MOS transistor Q4 The pole is electrically connected to the second end of the ultrasonic atomizing sheet 1 .

The control circuit 2 controls the first driving circuit 3 and the second driving circuit 6 to respectively output driving levels with opposite phases and equal frequencies to the ultrasonic atomizing sheet 1 at the same time.

A first resistor R1 is connected between the second driving circuit 6 and the second oscillating circuit 7, a second resistor R2 is connected between the first driving circuit 3 and the first oscillating circuit 4, and the second driving circuit A third resistor R3 is connected between 6 and the control circuit 2, and a fourth resistor R4 is connected between the first drive circuit 3 and the control circuit 2.

The first drive circuit 3 includes a first NPN transistor Q1, a first PNP transistor Q5 and a third capacitor C3, the base of the first NPN transistor Q1 and the base of the first PNP transistor Q5 are connected to The control circuit 2 is connected, the emitter of the first NPN transistor Q1 and the emitter of the first PNP transistor Q5 are connected with the first oscillation circuit 4, the collector of the first NPN transistor Q1 is connected with the power supply circuit 5 and The third capacitor C3 is grounded, and the collector of the first PNP transistor Q5 is grounded.

The second drive circuit 6 includes a second NPN transistor Q2, a second PNP transistor Q6 and a fourth capacitor C4, the base of the second NPN transistor Q2 and the base of the second PNP transistor Q6 are connected to The control circuit 2 is connected, the emitter of the second NPN transistor Q2 and the emitter of the second PNP transistor Q6 are connected with the second oscillator circuit 7, the collector of the second NPN transistor Q2 is connected with the power supply circuit 5 and The fourth capacitor C4 is grounded, and the collector of the second PNP transistor Q6 is grounded.

Embodiment 1 also includes a fifth resistor R5, a sixth resistor R6, a seventh resistor R7 and an eighth resistor R8, one end of the fifth resistor R5 is connected between the second drive circuit 6 and the second oscillation circuit 7, the second The other end of the fifth resistor R5 is grounded; one end of the sixth resistor R6 is connected between the control circuit 2 and the first drive circuit 3, and the other end of the sixth resistor R6 is grounded; one end of the seventh resistor R7 is connected between the control circuit 2 and the first drive circuit. Between the two driving circuits 6 , the other end of the seventh resistor R7 is grounded; one end of the eighth resistor R8 is connected between the first driving circuit 3 and the first oscillation circuit 4 , and the other end of the eighth resistor R8 is grounded.

The working principle of embodiment one is as follows:

1. The power supply circuit 5 provides effective voltage values for the driving circuit and the oscillation circuit respectively. The drive circuit amplifies the PWM signal (pulse width modulation signal) output by the control circuit 2 to drive the MOS tube (metal oxide field effect transistor) of the oscillation circuit, so that the MOS tube of the oscillation circuit can be completely turned on or off to reach the maximum The current conduction or cut-off effect makes the oscillating circuit fully resonate at a lower power supply voltage, and provides high-efficiency oscillation frequency and amplitude for the piezoelectric ceramic atomizer connected to it, so that the piezoelectric ceramic atomizer oscillates Work efficiency is optimal.

2. The drive circuit is a totem pole composed of a P-type triode and an N-type triode connected. It is divided into left and right sides, namely the first drive circuit 3 and the second drive circuit 6. The PWM signal matching the natural frequency of the chip 1 makes the left and right sides, namely the first oscillating circuit 4 and the second oscillating circuit 7, generate high-frequency signals of the same frequency and opposite phase at the same time, driving the ultrasonic atomizing chip 1 to oscillate up and down around the axis according to a sine wave , and make the smoke oil on the ultrasonic atomizing sheet 1, liquid or mixture similar to smoke oil produce the maximum amount of smoke. When the first drive circuit 3 outputs a high level, the second drive circuit 6 generates a low level with the same frequency and opposite phase; when the first drive circuit 3 outputs a low level, the second drive circuit 6 simultaneously generates a low level with the same frequency and opposite phase The high level of the ultrasonic atomizing sheet 1 is repeated in this way, so that the working efficiency of the ultrasonic atomizing sheet 1 is optimized, the energy loss is minimized, and the amount of smoke is maximized with a small power.

3. The oscillating circuit is to resonate the PWM signal amplified by the drive circuit through the inductance and capacitance connected to it and the electrostatic capacitance of the ultrasonic atomizing sheet 1 itself to form a sine wave, thereby effectively driving the ultrasonic atomizing sheet 1 . As shown in Figure 2, the frequency of the PWM1 signal is equal to the natural frequency of the ultrasonic atomizing sheet 1. When the PWM1 outputs a high level to the first drive circuit 3, the first NPN transistor Q1 is turned on, and the first PNP transistor Q5 is turned off. so that the output high level VDD1 turns on the first MOS transistor Q3, the first inductor L1 is charged, and the first capacitor C1 is discharged; at the same time, PWW2 outputs a low level signal with the opposite phase to the PWM1 signal and equal frequency and amplitude to the second drive circuit 6. The second NPN transistor Q2 is turned off, and the second PNP transistor Q6 is turned on, thereby outputting a low level GND to turn off the second MOS transistor Q4, the second inductor L2 is discharged, the second capacitor C2 is charged, and the voltage passes through the second The inductor L2 and the first capacitor C1 start to drive the ultrasonic atomizing sheet 1 to oscillate. When PWM1 outputs a low level to the first drive circuit 3, the first NPN transistor Q1 is turned off, and the first PNP transistor Q5 is turned on, thereby outputting a low level GND to turn off the first MOS transistor Q3, and the first inductor L1 Discharge, the first capacitor C1 is charged; at the same time, PWW2 outputs a high-level signal with the opposite phase to the PWM1 signal, and the frequency and amplitude are equal to the second drive circuit 6, the second NPN transistor Q2 is turned on, and the second PNP transistor Q6 is turned off , thus outputting a high level VDD1 to turn on the second MOS transistor Q4, the second inductor L2 is charged, the second capacitor C2 is discharged, and the voltage starts to oscillate to drive the ultrasonic atomizing sheet 1 through the first inductor L1 and the second capacitor C2. In this way, the ultrasonic atomizing sheet 1 vibrates repeatedly, the work efficiency is optimized, the energy loss is minimized, and the amount of smoke is maximized with a small power.

4. The first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4 act as a current limiter to prevent the short circuit of the atomizer from burning the front-end circuit. The third capacitor C3 and the fourth capacitor C4 can stabilize the power supply voltage. The sixth resistor R6 and the seventh resistor R7 serve to increase the low-level driving capability.

Embodiment two

As shown in Figures 3 to 8, the second embodiment of the present invention repeats the first embodiment, the difference is that the power supply circuit 5 includes a single-cell lithium battery 8, a charging and discharging circuit 9 and a boosting circuit, and the boosting circuit includes a first A boost circuit 10 and a second boost circuit 11, the single-cell lithium battery 8 is electrically connected to the first boost circuit 10 and the second boost circuit 11 respectively through the charging and discharging circuit 9, the control circuit 2, the second boost circuit A drive circuit 3 and a second drive circuit 6 are both electrically connected to the output end of the first boost circuit 10, and the first oscillator circuit 4 and the second oscillator circuit 7 are electrically connected to the output end of the second boost circuit 11 .

Embodiment 2 also includes a voltage and current detection circuit 12, the output terminal of the voltage and current detection circuit 12 is electrically connected to the control circuit 2; the voltage and current detection circuit 12 is connected between the ultrasonic atomizing sheet 1 and the second oscillation circuit 7 (the The voltage and current detection circuit 12 can also be connected between the ultrasonic atomizing sheet 1 and the first oscillation circuit 4).

The general working process of the present invention is shown in FIG. 9 . The power supply in the second embodiment is provided by a single-cell lithium battery 8 through boosting.

The boost circuit includes a first boost circuit 10 for boosting the voltage of the single-cell lithium battery 8 to 3.3V/5V and a second boost circuit 11 for boosting the voltage of the single-cell lithium battery 8 to about 16V. The boost circuit adopts a dedicated BOOST boost chip. By controlling the continuous switching of the external MOS tube, the back-end diode and electrolytic capacitor are charged, and the voltage of the single-cell lithium battery 8 is stably raised to about 16V, reaching an output power of about 30W and 85 % conversion efficiency, accompanied by an over-current protection circuit to meet the power supply requirements of the back-end ultrasonic atomization circuit. In addition, the voltage of the single-cell lithium battery 8 is raised to 3.3V/5V to supply power to the single-chip microcomputer and the driving circuit.

The charge and discharge circuit 9 realizes 5V/2A USB interface charging through the lithium battery charging chip, and has overcharge and overvoltage protection functions. The discharge protection circuit protects the power supply part to provide the required correct voltage for the entire circuit, and at the same time prevents the back-end circuit from overcurrent and short circuit, causing damage to the battery.

The control circuit 2 realizes the low power consumption and safety protection of the entire circuit board by controlling the indication of the LED light and the switch of the MOS tube through the 51 series single-chip microcomputer, and performs AD detection to detect the voltage and current changes of the ultrasonic atomizing sheet 1 in real time to prevent ultrasonic fog The chip 1 is dry-burned and frequency offset, and also provides PWM signals for the back-end drive circuit.

The oscillating circuit drives the back-end oscillating circuit to fully oscillate through the enhancement of the PWM signal by the totem circuit, so that the atomizer performs LC full-wave oscillation and improves work efficiency.

The voltage and current detection circuit 12 is connected to the power supply terminal of the ultrasonic atomizing sheet 1, and is used to detect the voltage and current changes when the ultrasonic atomizing sheet 1 is working. When the frequency of the ultrasonic atomizing sheet 1 deviates, the load current will also change accordingly. Detect the peak-to-peak voltage and peak-to-peak current on the ultrasonic atomizing sheet 1 through the voltage and current detection circuit 12, quickly find the resonance frequency of the ultrasonic atomizing sheet 1, and adjust the output PWM wave frequency in time according to the detected voltage and current changes, to achieve The effect of frequency chasing enables the ultrasonic atomizer 1 to maintain high-efficiency full-wave oscillation at all times, so as to achieve the maximum amount of smoke with the minimum power consumption.

Embodiments of the present invention have been described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementations, and the above-mentioned specific implementations are only illustrative, rather than limiting, and those of ordinary skill in the art will Under the enlightenment of the present invention, many forms can also be made without departing from the gist of the present invention and the protection scope of the claims, and these all belong to the protection scope of the present invention.

Claims (11)

1. An ultrasonic electronic cigarette circuit, including an ultrasonic atomizing sheet (1), a control circuit (2), a first drive circuit (3), a first oscillation circuit (4) and a power supply circuit (5), the control circuit (2) The first end of the ultrasonic atomizing sheet (1) is electrically connected to the first end of the ultrasonic atomizing sheet (1) through the first drive circuit (3) and the first oscillation circuit (4) in sequence, the control circuit (2), the first drive circuit (3) and the second An oscillating circuit (4) is electrically connected to the power supply circuit (5), and is characterized in that it also includes a second driving circuit (6) and a second oscillating circuit (7), and the control circuit (2) is sequentially driven by the second The circuit (6), the second oscillating circuit (7) are electrically connected to the second end of the ultrasonic atomizing sheet (1), and the second driving circuit (6) and the second oscillating circuit (7) are both electrically connected to the power supply circuit (5). connect; The first oscillating circuit (4) includes a first MOS transistor (Q3), a first inductor (L1) and a first capacitor (C1), the gate of the first MOS transistor (Q3) and the first drive circuit (3) The output terminal of the first MOS transistor (Q3) is connected to the ground, the first inductor (L1) is connected between the power supply circuit (5) and the drain of the first MOS transistor (Q3), and the first capacitor (C1) Connected between the drain of the first MOS transistor (Q3) and the ground, the drain of the first MOS transistor (Q3) is electrically connected to the first end of the ultrasonic atomizing sheet (1). 2. The ultrasonic electronic cigarette circuit according to claim 1, characterized in that, the second oscillating circuit (7) includes a second MOS tube (Q4), a second inductor (L2) and a second capacitor (C2), The gate of the second MOS transistor (Q4) is connected to the output terminal of the second drive circuit (6), the source of the second MOS transistor (Q4) is grounded, and the second inductor (L2) is connected to the power supply circuit (5) and the second Between the drains of the two MOS tubes (Q4), the second capacitor (C2) is connected between the drain of the second MOS tube (Q4) and the ground, and the drain of the second MOS tube (Q4) is connected to the ultrasonic atomizing sheet (1) The second terminal is electrically connected. 3. The ultrasonic electronic cigarette circuit according to claim 1, characterized in that, the control circuit (2) controls the first drive circuit (3) and the second drive circuit (6) to output opposite phases and frequencies respectively at the same time Equal drive level to the ultrasonic atomizing sheet (1). 4. The ultrasonic electronic cigarette circuit according to any one of claims 1 to 3, characterized in that the power supply circuit (5) includes a single-cell lithium battery (8), a charging and discharging circuit (9) and a boost circuit, The boost circuit includes a first boost circuit (10) and a second boost circuit (11), and the single-cell lithium battery (8) is connected to the first boost circuit (10) through a charging and discharging circuit (9) respectively. Electrically connected to the second boost circuit (11), the control circuit (2), the first drive circuit (3), and the second drive circuit (6) are all electrically connected to the output end of the first boost circuit (10) , both the first oscillating circuit (4) and the second oscillating circuit (7) are electrically connected to the output terminal of the second boosting circuit (11). 5. The ultrasonic electronic cigarette circuit according to any one of claims 1 to 3, characterized in that it further includes a voltage and current detection circuit (12), and the output terminal of the voltage and current detection circuit (12) is connected with the control circuit (2 ) electrical connection; the voltage and current detection circuit (12) is connected between the ultrasonic atomization sheet (1) and the first oscillation circuit (4), or the voltage and current detection circuit (12) is connected to the ultrasonic atomization sheet (1) and the second oscillating circuit (7). 6. The ultrasonic electronic cigarette circuit according to any one of claims 1 to 3, characterized in that a first resistor (R1) is connected between the second driving circuit (6) and the second oscillation circuit (7) , a second resistor (R2) is connected between the first drive circuit (3) and the first oscillation circuit (4), and a third resistor (R2) is connected between the second drive circuit (6) and the control circuit (2). A resistor (R3), a fourth resistor (R4) is connected between the first drive circuit (3) and the control circuit (2). 7. The ultrasonic electronic cigarette circuit according to any one of claims 1 to 3, characterized in that the first drive circuit (3) includes a first NPN transistor (Q1), a first PNP transistor (Q5) and the third capacitor (C3), the bases of the first NPN transistor (Q1) and the first PNP transistor (Q5) are connected to the control circuit (2), and the first NPN transistor ( The emitter of Q1) and the emitter of the first PNP transistor (Q5) are connected to the first oscillation circuit (4), and the collector of the first NPN transistor (Q1) is connected to the power circuit (5) and passed through the third The capacitor (C3) is grounded, and the collector of the first PNP transistor (Q5) is grounded. 8. The ultrasonic electronic cigarette circuit according to any one of claims 1 to 3, characterized in that, the second drive circuit (6) includes a second NPN transistor (Q2), a second PNP transistor (Q6) and the fourth capacitor (C4), the base of the second NPN transistor (Q2) and the base of the second PNP transistor (Q6) are connected to the control circuit (2), and the second NPN transistor ( The emitter of Q2) and the emitter of the second PNP transistor (Q6) are connected to the second oscillator circuit (7), and the collector of the second NPN transistor (Q2) is connected to the power circuit (5) and passed through the fourth The capacitor (C4) is grounded, and the collector of the second PNP transistor (Q6) is grounded. 9. The ultrasonic electronic cigarette circuit according to any one of claims 1 to 3, characterized in that it also includes a fifth resistor (R5), a sixth resistor (R6), a seventh resistor (R7) and an eighth resistor ( R8), one end of the fifth resistor (R5) is connected between the second drive circuit (6) and the second oscillation circuit (7), and the other end of the fifth resistor (R5) is grounded; the sixth resistor (R6) One end of the sixth resistor (R6) is connected between the control circuit (2) and the first drive circuit (3), the other end of the sixth resistor (R6) is grounded; one end of the seventh resistor (R7) is connected between the control circuit (2) and the second drive circuit (3). Between the circuits (6), the other end of the seventh resistor (R7) is grounded; one end of the eighth resistor (R8) is connected between the first drive circuit (3) and the first oscillation circuit (4), and the eighth resistor ( The other end of R8) is grounded. 10. The ultrasonic electronic cigarette circuit according to any one of claims 1 to 3, characterized in that the ultrasonic atomizing sheet (1) is a non-porous piezoelectric ceramic atomizing sheet. 11. An ultrasonic electronic cigarette, characterized in that it comprises the ultrasonic electronic cigarette circuit according to any one of claims 1 to 10.