WO2018223999A1 - 一种超声波电子烟电路及该超声波电子烟 - Google Patents

一种超声波电子烟电路及该超声波电子烟 Download PDF

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Publication number
WO2018223999A1
WO2018223999A1 PCT/CN2018/090229 CN2018090229W WO2018223999A1 WO 2018223999 A1 WO2018223999 A1 WO 2018223999A1 CN 2018090229 W CN2018090229 W CN 2018090229W WO 2018223999 A1 WO2018223999 A1 WO 2018223999A1
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WO
WIPO (PCT)
Prior art keywords
circuit
ultrasonic
driving
electrically connected
atomizing sheet
Prior art date
Application number
PCT/CN2018/090229
Other languages
English (en)
French (fr)
Inventor
刘建福
钟科军
郭小义
黄炜
尹新强
易建华
李胜博
沈开为
Original Assignee
湖南中烟工业有限责任公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201710427234.8A external-priority patent/CN109007974A/zh
Priority claimed from CN201710811668.8A external-priority patent/CN109480332B/zh
Priority claimed from CN201721402718.9U external-priority patent/CN207383536U/zh
Application filed by 湖南中烟工业有限责任公司 filed Critical 湖南中烟工业有限责任公司
Priority to US16/619,418 priority Critical patent/US11589609B2/en
Priority to EP18812637.9A priority patent/EP3607840B1/en
Publication of WO2018223999A1 publication Critical patent/WO2018223999A1/zh

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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/05—Devices without heating means
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/50—Control or monitoring
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B1/00—Details
    • H03B1/02—Structural details of power oscillators, e.g. for heating
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/10—Devices using liquid inhalable precursors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the invention belongs to the technical field of electronic cigarettes, and particularly relates to an ultrasonic electronic cigarette circuit and the ultrasonic electronic cigarette.
  • 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 sequence, thereby causing the ultrasonic electronic atomizing ultrasonic atomizing sheet to be unable to work at full load, and the ultrasonic atomizing sheet It can only oscillate with half wave, low efficiency, severe heat generation, and fast loss of ultrasonic atomizer.
  • the power supply circuit includes a multi-cell lithium battery, and the operating voltage and the oscillating voltage with different voltage values are respectively provided by different lithium battery packs, so the cost is high and the volume is large.
  • the existing ultrasonic electronic cigarette is only driven by one way, and can not work at full load.
  • the ultrasonic atomizing sheet can only oscillate at half wave, the efficiency is low, the heat is severe, the ultrasonic atomizing sheet is fast, and the multi-cell lithium battery is high in cost and large in volume.
  • the object of the present invention is to provide an ultrasonic electronic cigarette circuit and the ultrasonic electronic cigarette, and the ultrasonic atomizing sheet simultaneously works at both ends, and the ultrasonic atomizing sheet has high working efficiency, small heat generation and energy loss. Low, long service life, low cost and small size.
  • the technical solution adopted by the present invention is:
  • An ultrasonic electronic cigarette circuit comprising an ultrasonic atomizing sheet, a control circuit, a first driving oscillating circuit and a power supply circuit, wherein the control circuit is electrically connected to the first end of the ultrasonic atomizing sheet through the first driving oscillating circuit, the control circuit,
  • the first driving oscillating circuit is electrically connected to the power circuit, and is characterized by further comprising a second driving oscillating circuit, wherein the control circuit is electrically connected to the second end of the ultrasonic atomizing sheet through the second driving oscillating circuit, and the second driving oscillating circuit Electrically connected to the power circuit.
  • the power supply circuit supplies power to the first driving oscillating circuit and the second driving oscillating circuit
  • the control circuit controls the first driving oscillating circuit and the second driving oscillating circuit to send a signal to cause the ultrasonic atomizing sheet to atomize the smoke oil, thereby generating smoke. Since both ends of the ultrasonic atomizing sheet work at the same time, the ultrasonic atomizing sheet is in a resonant state at this time, thereby greatly improving the working efficiency of the ultrasonic atomizing sheet, so that the ultrasonic electronic cigarette generates the minimum amount of heat in the case of generating the same amount of smoke. Lower cost and longer life.
  • a detection circuit for detecting an operating state of the ultrasonic atomizing sheet is further included, wherein an output end of the detecting circuit is electrically connected to the control circuit, and a detecting end of the detecting circuit is connected to the ultrasonic atomizing sheet and the first driving oscillation circuit. Between, or the detection end of the detection circuit is connected between the ultrasonic atomizing sheet and the second driving oscillation circuit.
  • the detecting circuit is required to detect the actual working state of the ultrasonic atomizing sheet, and the detecting circuit The detected signal is sent to the control circuit, so that the control circuit controls the frequency of the output PWM signal, so that the ultrasonic atomizing sheet is always in a resonance state, improving work efficiency and atomization effect.
  • the first driving oscillation circuit includes a first driving circuit and a first oscillation circuit
  • the second driving oscillation circuit includes a second driving circuit and a second oscillation circuit
  • the control circuit sequentially passes through the first driving circuit
  • the first oscillating circuit is electrically connected to the first end of the ultrasonic atomizing sheet
  • the control circuit, the first driving circuit and the first oscillating circuit are electrically connected to the power supply circuit
  • the control circuit sequentially passes through the second driving circuit and the second oscillating circuit.
  • the second end of the ultrasonic atomizing sheet is electrically connected, and the second driving circuit and the second oscillation circuit are both electrically connected to the power source circuit.
  • the power supply circuit supplies power to the driving circuit and the oscillating circuit
  • the driving circuit is used for switching and driving the oscillating circuit
  • the oscillating circuit resonates the ultrasonic atomizing sheet by the driving signal provided by the driving circuit.
  • the control circuit simultaneously generates a driving signal through the first driving circuit and the second driving circuit to cause the ultrasonic atomizing sheet to atomize the smoke oil to generate smoke. Since both ends of the ultrasonic atomizing sheet work at the same time, the ultrasonic atomizing sheet is in a resonant state at this time, thereby greatly improving the working efficiency of the ultrasonic atomizing sheet, so that the ultrasonic electronic cigarette generates the minimum amount of heat in the case of generating the same amount of smoke. Lower cost and longer life.
  • the first oscillating circuit includes a first MOS transistor, a first inductor and a first capacitor, a gate of the first MOS transistor is connected to an output end of the first driving circuit, and a source of the first MOS transistor is grounded, An inductor is connected between the power supply circuit and the drain of the first MOS transistor, the first capacitor is connected between the drain of the first MOS transistor and the ground, and the drain of the first MOS transistor and the first end of the ultrasonic atomizing sheet Electrical connection.
  • the second oscillating circuit includes a second MOS transistor, a second inductor and a second capacitor, a gate of the second MOS transistor is connected to an output end of the second driving circuit, and a source of the second MOS transistor is grounded,
  • the second inductor is connected between the power supply circuit and the drain of the second MOS transistor, the second capacitor is connected between the drain of the second MOS transistor and the ground, and the drain of the second MOS transistor and the second end of the ultrasonic atomizing sheet Electrical connection.
  • control circuit controls the first driving circuit and the second driving circuit to respectively output driving levels of opposite phases and equal frequencies to the ultrasonic atomizing sheet at the same time.
  • the second driving circuit when the first driving circuit outputs a high level, the second driving circuit outputs a low level having the same frequency; when the first driving circuit outputs a low level, the second driving circuit outputs a high level having the same frequency, such that The cycle work makes the ultrasonic atomization piece work optimally and the amount of smoke is the largest.
  • the power supply circuit includes a single-cell lithium battery, a charge and discharge circuit, and a booster circuit
  • the booster circuit includes a first booster circuit and a second booster circuit
  • the single-cell lithium battery passes through a charge and discharge circuit respectively
  • the first boosting circuit and the second boosting circuit are electrically connected to each other, and the control circuit, the first driving circuit and the second driving circuit are electrically connected to an output end of the first boosting circuit, the first oscillator circuit and the first
  • the two oscillating circuits are all electrically connected to the output of the second boosting circuit.
  • a single-cell lithium battery can be used to power the entire ultrasonic electronic cigarette circuit, requiring fewer electronic components, resulting in lower cost, higher efficiency, and smaller size.
  • the detecting circuit is a voltage current detecting circuit, and an output end of the voltage current detecting circuit is electrically connected to the control circuit; the voltage current detecting circuit is connected to the ultrasonic atomizing sheet and the first oscillation circuit. The voltage or current detecting circuit is connected between the ultrasonic atomizing sheet and the second oscillation circuit. .
  • the operating voltage and the operating current of the ultrasonic atomizing sheet are detected by the voltage current detecting circuit, and the voltage current detecting circuit feeds back the detected voltage value and current value to the control circuit, and the control circuit is based on the voltage peak-to-peak value and the current peak-to-peak value.
  • the resonance frequency of the ultrasonic atomizing sheet can be quickly found, and then the ultrasonic atomizing sheet is controlled according to the resonance frequency, thereby further improving the working efficiency of the ultrasonic atomizing sheet.
  • the detecting circuit includes a first antenna electrically connected to one end of the ultrasonic atomizing sheet for detecting a high frequency electromagnetic wave signal emitted when the ultrasonic atomizing sheet is oscillated, and a receiving end signal for receiving the first antenna.
  • the antenna receiving circuit and the antenna receiving circuit are electrically connected to the input end of the control circuit through the filter amplifying circuit, the filtering shaping and the square wave converting circuit in sequence.
  • the ultrasonic atomizing sheet radiates electromagnetic waves of the same frequency outward in the state of high frequency resonance, and the electromagnetic wave signal closest to the resonant frequency of the ultrasonic atomizing sheet is the strongest, and the first antenna and the antenna receiving circuit near the ultrasonic atomizing sheet pass.
  • the electromagnetic wave signal radiated can be received, and then filtered and amplified by a filter amplifying circuit, and converted into a square wave signal which can be recognized by the control circuit after being filtered and shaped and converted into a control circuit, and the control circuit is detected according to the detection.
  • the square wave frequency is adjusted to adjust the frequency of the output PWM signal, so that the frequency of the entire driving oscillation circuit and the ultrasonic atomizing sheet are kept the same, so that the driving oscillation circuit can quickly and accurately generate the same oscillation as the ultrasonic atomizing sheet.
  • the frequency so that the ultrasonic atomizing sheet is always in a state of resonance, maximally maintains an efficient and stable atomization effect, a large amount of smoke, and a long service life of the product.
  • This frequency detection method can eliminate the clutter interference of the oscillating circuit, and is more accurate and reliable.
  • the drive oscillating circuit can also adjust the frequency synchronously to achieve frequency chasing.
  • the antenna receiving circuit includes a second antenna and a first inductor, and the filter amplifier and the second antenna are both electrically connected to the first end of the first inductor, and the second end of the first inductor is grounded.
  • the detecting circuit is a power detecting circuit, and the detecting end of the power detecting circuit is electrically connected to one end of the ultrasonic atomizing piece, and the output end of the power detecting circuit is electrically connected to the input end of the control circuit.
  • the oscillation frequency is closest to the frequency of the ultrasonic atomizing sheet when the power of the ultrasonic atomizing sheet is maximum, the amount of smoke of the electronic cigarette is also the largest, and the power detecting method can eliminate the interference of other components in the circuit, and the ultrasonic can be realized more accurately and reliably.
  • the fast and accurate frequency chasing of the atomized sheet ensures that the amount of smoke of the electronic cigarette is always maximized, the performance of the product is improved, the product life cycle of the electronic cigarette is prolonged, and the continuous increase of the amount of smoke can be achieved by a small power.
  • the present invention also provides an ultrasonic electronic cigarette comprising the ultrasonic electronic cigarette circuit.
  • the invention enables the ultrasonic atomizing sheets to work simultaneously at both ends, and the ultrasonic atomizing sheet has high working efficiency, small heat generation, low energy loss and long service life; and is powered by a single-cell lithium battery, and has low cost and volume.
  • FIG. 1 is a block diagram showing the structure of a first embodiment of the present invention.
  • FIG. 2 is a circuit diagram of the first embodiment.
  • FIG. 3 is a schematic structural diagram of a block according to Embodiment 2 of the present invention.
  • FIG. 9 is a flowchart of the operation of the second embodiment.
  • FIG. 10 is a schematic structural diagram of a block according to Embodiment 3 of the present invention.
  • Figure 11 is a circuit diagram of the third embodiment.
  • FIG. 12 is a schematic structural diagram of a block according to Embodiment 4 of the present invention.
  • Figure 13 is a circuit diagram of the fourth embodiment.
  • 1 is a control circuit
  • 2 is a first driving oscillating circuit
  • 201 is a first driving circuit
  • 202 is a first oscillating circuit
  • 3 is a second driving oscillating circuit
  • 301 is a second driving circuit
  • 302 is a second oscillating circuit 4 is the power detection circuit
  • 5 is the power supply circuit
  • J is the ultrasonic atomization film
  • 6 is the filter shaping and square wave conversion circuit
  • 7 is the filter amplification circuit
  • 8 is a single-cell lithium battery
  • 9 is a charge and discharge circuit
  • 10 is The first boosting circuit
  • 11 is a second boosting circuit
  • 12 is a voltage and current detecting circuit
  • 13 is an antenna receiving circuit
  • C1 is a first capacitor
  • C2 is a second capacitor
  • C3 is a third capacitor
  • C4 is a fourth capacitor.
  • C5 is the fifth capacitor
  • C6 is the sixth capacitor
  • C7 is the seventh capacitor
  • C8 is the eighth capacitor
  • C9 is the ninth capacitor
  • D1 is the first diode
  • D2 is the second diode
  • D3 is the first Three diodes
  • E1 is the first antenna
  • E2 is the second antenna
  • L1 is the first inductance
  • L2 is the second inductance
  • L3 is the third inductance
  • Q1 is the first NPN type triode
  • Q2 is the second NPN type triode
  • Q3 is the first MOS tube
  • Q4 is the second MOS tube
  • Q5 is the first PNP type triode
  • Q6 is the second PNP type triode
  • Q7 is the third N PN type 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 ultrasonic electronic cigarette circuit includes an ultrasonic atomizing sheet J, a control circuit 1, a first driving oscillating circuit 2, and a power supply circuit 5, and the control circuit 1 passes the first driving oscillating circuit 2 and the ultrasonic mist.
  • the first end of the sheet J is electrically connected, and the control circuit 1 and the first driving oscillating circuit 2 are electrically connected to the power circuit 5, and further includes a second driving oscillating circuit 3, and the control circuit 1 passes through the second driving oscillating circuit 3
  • the second end of the ultrasonic atomizing sheet J is electrically connected, and the second driving oscillation circuit 3 is electrically connected to the power source circuit 5.
  • the first driving oscillating circuit 2 includes a first driving circuit 201 and a first oscillating circuit 202
  • the second driving oscillating circuit 3 includes a second driving circuit 301 and a second oscillating circuit 302;
  • a driving circuit 201, a first oscillating circuit 202 is electrically connected to the first end of the ultrasonic atomizing sheet J, and the control circuit 1, the first driving circuit 201 and the first oscillating circuit 202 are electrically connected to the power circuit 5, the control circuit 1 is electrically connected to the second end of the ultrasonic atomizing sheet J through the second driving circuit 301 and the second oscillation circuit 302 in sequence, and the second driving circuit 301 and the second oscillation circuit 302 are both electrically connected to the power supply circuit 5.
  • the ultrasonic atomizing sheet J is a non-porous piezoelectric ceramic atomizing sheet.
  • the first oscillating circuit 202 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 end of the first driving circuit 201, and the source of the first MOS transistor Q3.
  • 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 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 J.
  • the second oscillating circuit 302 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 of the second driving circuit 301, and the source of the second MOS transistor Q4.
  • the second inductor 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 second MOS transistor Q4 is drained.
  • the pole is electrically connected to the second end of the ultrasonic atomizing sheet J.
  • the control circuit 1 controls the first driving circuit 201 and the second driving circuit 301 to respectively output driving levels of opposite phases and equal frequencies to the ultrasonic atomizing sheet J at the same timing.
  • a first resistor R1 is connected between the second driving circuit 301 and the second oscillating circuit 302, and a second resistor R2 is connected between the first driving circuit 201 and the first oscillating circuit 202, and the second driving circuit is connected.
  • a third resistor R3 is connected between the 301 and the control circuit 1, and a fourth resistor R4 is connected between the first driving circuit 201 and the control circuit 1.
  • the first resistor R1, the second resistor R2, the third resistor R3, and the fourth resistor R4 function as a current limiting to prevent the ultrasonic atomizing sheet J from being short-circuited and burning the front end circuit.
  • the first driving circuit 201 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 both
  • the control circuit 1 is connected, the emitter of the first NPN transistor Q1 and the emitter of the first PNP transistor Q5 are connected to the first oscillation circuit 202, and the collector of the first NPN transistor Q1 is connected to the power supply circuit 5 and The collector of the first PNP type transistor Q5 is grounded through the third capacitor C3.
  • the second driving circuit 301 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 both
  • the control circuit 1 is connected, the emitter of the second NPN transistor Q2 and the emitter of the second PNP transistor Q6 are both connected to the second oscillating circuit 302, and the collector of the second NPN transistor Q2 is connected to the power circuit 5 and
  • the fourth capacitor C4 is grounded, and the collector of the second PNP transistor Q6 is grounded.
  • the first embodiment further 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 driving circuit 301 and the second oscillator circuit 302. The other end of the fifth resistor R5 is grounded; one end of the sixth resistor R6 is connected between the control circuit 1 and the first driving circuit 201, and the other end of the sixth resistor R6 is grounded; one end of the seventh resistor R7 is connected to the control circuit 1 and Between the two driving circuits 301, the other end of the seventh resistor R7 is grounded; one end of the eighth resistor R8 is connected between the first driving circuit 201 and the first oscillating circuit 202, and the other end of the eighth resistor R8 is grounded.
  • the sixth resistor R6 and the seventh resistor R7 can function to increase the low-level driving capability.
  • the power supply circuit 5 provides effective voltage values for the drive circuit and the oscillating circuit, respectively.
  • the driving circuit amplifies the PWM signal (pulse width modulation signal) outputted by the control circuit 1 to drive the MOS transistor (metal oxide field effect transistor) of the oscillation circuit, so that the MOS transistor of the oscillation circuit can be completely turned on or off to reach the maximum
  • the current is turned on or off, so that the oscillating circuit fully resonates at a lower power supply voltage, providing an efficient oscillation frequency and oscillation amplitude for the piezoelectric ceramic atomizing sheet connected thereto, and oscillating the piezoelectric ceramic atomizing sheet Work efficiency is optimal.
  • the driving circuit is a totem pole composed of a P-type triode and an N-type triode, and is divided into left and right sides, that is, a first driving circuit 201 and a second driving circuit 301, which are provided by the single-chip microcomputer and the ultrasonic atomization provided by the amplification control circuit 1.
  • the chip J has a natural frequency matched PWM signal, so that the left and right sides, that is, the first oscillating circuit 202 and the second oscillating circuit 302 simultaneously generate high frequency signals of the same frequency and opposite phases, and drive the ultrasonic atomizing sheet J to oscillate up and down according to the sine wave around the axis.
  • the second driving circuit 301 When the first driving circuit 201 outputs a high level, the second driving circuit 301 generates a low level with the same frequency and opposite phase; when the first driving circuit 201 outputs a low level, the second driving circuit 301 simultaneously generates the same phase with the same frequency.
  • the high level so that the ultrasonic atomizing sheet J works optimally, the energy loss is minimized, and the amount of smoke is maximized with a small power.
  • the oscillating circuit generates a resonance by a PWM signal amplified by the driving circuit through the inductance and capacitance connected thereto and the electrostatic capacitance of the ultrasonic atomizing sheet J itself, thereby forming a sine wave, thereby effectively driving the ultrasonic atomizing sheet J.
  • the frequency of the PWM1 signal is equal to the natural frequency of the ultrasonic atomizing sheet J.
  • the first inductor L1 is charged, and the first capacitor C1 is discharged; at the same time, the PWW2 output is opposite to the PWM1 signal, and the low frequency signal of equal frequency and amplitude is sent to the second driving circuit.
  • the second NPN transistor Q2 is turned off, the second PNP transistor Q6 is turned on, so that the output low level GND turns off the second MOS transistor Q4, the second inductor L2 discharges, the second capacitor C2 charges, and the voltage passes through the second The inductor L2 and the first capacitor C1 start to drive the ultrasonic atomizing sheet J to oscillate.
  • the PWM1 When the PWM1 outputs a low level to the first driving circuit 201, 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, the first inductor L1 Discharge, the first capacitor C1 is charged; at the same time, the PWW2 output is opposite to the PWM1 signal, the high frequency signal of equal frequency and amplitude is sent to the second driving circuit 301, the second NPN transistor Q2 is turned on, and the second PNP transistor Q6 is turned off.
  • the output high level VDD1 turns on the second MOS transistor Q4, the second inductor L2 is charged, and the second capacitor C2 is discharged, and the voltage starts to oscillate the driving ultrasonic atomizing sheet J through the first inductor L1 and the second capacitor C2.
  • the ultrasonic atomizing sheet J is repeatedly oscillated, the working efficiency is optimized, the energy loss is minimized, and the amount of smoke is maximized with a small power.
  • the first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4 act as a current limiting function to prevent the atomization sheet from short-circuiting and burning the front end circuit, and the third capacitor C3 and the fourth capacitor C4 can stabilize the power supply voltage.
  • the sixth resistor R6 and the seventh resistor R7 function to increase the low-level driving capability.
  • the second embodiment of the present invention repeats the first embodiment.
  • the power circuit 5 includes a single-cell lithium battery 8 , a charging and discharging circuit 9 , and a boosting circuit.
  • a booster circuit 10 and a second booster circuit 11 wherein the single-cell lithium battery 8 is electrically connected to the first booster circuit 10 and the second booster circuit 11 via a charge and discharge circuit 9, respectively, the control circuit 1,
  • a driving circuit 201 and a second driving circuit 301 are both electrically connected to an output end of the first boosting circuit 10
  • the first oscillating circuit 202 and the second oscillating circuit 302 are electrically connected to an output end of the second boosting circuit 11. .
  • the second embodiment further includes a voltage and current detecting circuit 12, the output end of the voltage current detecting circuit 12 is electrically connected to the control circuit 1, and the voltage current detecting circuit 12 is connected between the ultrasonic atomizing sheet J and the second oscillating circuit 302.
  • the voltage current detecting circuit 12 can also be connected between the ultrasonic atomizing sheet J and the first oscillation circuit 202).
  • the general operation of the present invention is illustrated in FIG.
  • the power supply in the second embodiment is provided by a single-cell lithium battery 8 through boosting.
  • the boosting circuit includes a first boosting circuit 10 that raises the voltage of the single-cell lithium battery 8 to 3.3 V/5 V and a second boosting circuit 11 that raises the voltage of the single-cell lithium battery 8 to about 16 V.
  • the booster circuit uses a dedicated BOOST boost chip to charge the back-end diode and electrolytic capacitor by controlling the continuous switching of the external MOS tube, 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. More than % conversion efficiency, accompanied by overcurrent protection circuit to meet the power supply requirements of the back end ultrasonic atomization circuit.
  • the voltage of the single-cell lithium battery 8 is raised to 3.3V/5V to supply power to the microcontroller and the drive circuit.
  • the charging and discharging circuit 9 realizes 5V/2A USB interface charging through the lithium battery charging chip, has overcharge and overvoltage protection functions, and the discharge protection circuit protects the power supply part to provide the correct voltage for the entire circuit, and prevents the back end circuit from overcurrent. And short circuit, causing damage to the battery.
  • the control circuit 1 controls the indication of the LED lamp and the switch of the MOS tube through the 51 series single-chip microcomputer to realize the low power consumption and safety protection of the entire circuit board, and performs AD detection to detect the voltage and current changes of the ultrasonic atomizing sheet J in real time, and prevent the ultrasonic mist.
  • the chip J is dry and frequency offset, and also provides PWM signal 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 atomized piece performs LC full-wave oscillation and improves the working efficiency.
  • the voltage and current detecting circuit 12 is connected to the power supply end of the ultrasonic atomizing sheet J for detecting the voltage and current changes during the operation of the ultrasonic atomizing sheet J, and the current of the load of the ultrasonic atomizing sheet J is shifted accordingly.
  • the voltage-current detecting circuit 12 detects the peak-to-peak value of the voltage on the ultrasonic atomizing sheet J and the peak-to-peak value of the current, quickly finds the resonant frequency of the ultrasonic atomizing sheet J, and timely adjusts the output PWM wave frequency according to the detected voltage current change.
  • the effect of frequency chasing makes the ultrasonic atomizing sheet J maintain high-efficiency full-wave oscillation at all times to achieve the maximum amount of smoke with minimum power consumption.
  • the ultrasonic electronic cigarette circuit includes an ultrasonic atomizing sheet J and a control circuit 1.
  • the first output end of the control circuit 1 is electrically connected to the first end of the ultrasonic atomizing sheet J through the first driving oscillation circuit 2.
  • the second output end of the control circuit 1 is electrically connected to the second end of the ultrasonic atomizing sheet J through the second driving oscillating circuit 3, and further includes an ultrasonic atomizing sheet J for detecting the ultrasonic atomizing sheet J electrically connected to one end of the ultrasonic atomizing sheet J.
  • circuit 1 for transmitting a high-frequency electromagnetic wave signal when oscillating, an antenna receiving circuit 13 for receiving a signal for transmitting the first antenna E1, and an antenna receiving circuit 13 sequentially passing through a filter amplifying circuit 7, a filtering shaping and a square wave converting circuit 6 and controlling The input of circuit 1 is electrically connected.
  • the frequency chasing circuit further includes a power supply circuit 5, which is composed of a single-cell lithium battery charge and discharge protection circuit and a booster circuit, and provides working power to each circuit module.
  • the charge and discharge protection circuit has overcharge and overvoltage protection functions to prevent overcurrent and short circuit of the back end circuit.
  • the booster circuit uses a single-cell lithium battery to boost to 16V, providing a power supply of approximately 30W for the back-end drive oscillator circuit.
  • the control circuit 1 is used to control the working switches of the respective circuit modules and output PWM signals.
  • the control circuit 1 controls the LED lamp by the 51-core single-chip microcomputer and the switch of the MOS tube to realize low power consumption and safety protection of the entire circuit board, and detects the voltage and current changes of the ultrasonic atomizing sheet J in real time, and prevents the ultrasonic atomizing sheet J. Dry burning and overloading, and also provide PWM signal and frequency chasing for the back-end drive oscillator circuit.
  • the driving oscillating circuit amplifies the PWM signal provided by the control circuit 1 through the driving chip, drives the inductance and capacitance resonance in the back oscillating circuit, and causes the ultrasonic atomizing sheet J to perform full wave oscillation to achieve the optimal atomizing effect.
  • the antenna receiving circuit 13 includes a second antenna E2 and a first inductor L1.
  • the filter amplifier and the second antenna E2 are both electrically connected to the first end of the first inductor L1, and the second end of the first inductor L1 is grounded.
  • the filter amplifying circuit 7 includes a first capacitor C1, a second capacitor C2, a third capacitor C3, a first resistor R1, a second resistor R2, a third resistor R3, a first NPN transistor Q1, and a second capacitor C2.
  • One end of the resistor R1 is electrically connected to one end of the third capacitor C3, and the other end of the second capacitor C2 is electrically connected to the first end of the first inductor L1, the other end of the first resistor R1 is grounded, and the third capacitor C3 is another.
  • One end of the first resistor and the second resistor R2 are electrically connected to the base of the first NPN transistor Q1, and the other end of the second resistor R2 and one end of the third resistor R3 are electrically connected to the positive pole of the power source, and the other end of the third resistor R3
  • one end of the first capacitor C1 is electrically connected to the collector of the first NPN transistor Q1
  • the other end of the first capacitor C1 is electrically connected to the filter shaping and square wave conversion circuit 6, and the emitter of the first NPN transistor Q1 is grounded.
  • the filter shaping and square wave conversion circuit 6 includes a fourth capacitor C4, a fifth capacitor C5, a first diode D1, a fourth resistor R4, a fifth resistor R5, a second NPN transistor Q2, and a fourth capacitor C4.
  • One end and one end of the first capacitor C1 are electrically connected to the anode of the first diode D1, and one end of the fourth resistor R4 and one end of the fifth capacitor C5 are electrically connected to the cathode of the first diode D1, and the fourth resistor
  • the other end of R4 is electrically connected to the base of the second NPN transistor Q2, the other end of the fourth capacitor C4, the other end of the fifth capacitor C5, and the emitter of the second NPN transistor Q2 are grounded, and the fifth resistor R5 One end is electrically connected to the positive pole of the power source, and the input end of the control circuit 1 and the other end of the fifth resistor R5 are electrically connected to the collector of the second NPN transistor Q2.
  • the first driving oscillating circuit 2 includes an amplifier U2, a sixth resistor R6, a first MOS transistor Q3, a second inductor L2, and a sixth capacitor C6.
  • the first output terminal of the control circuit 1 is electrically connected to the first input terminal of the amplifier U2.
  • the first output of the amplifier U2 is electrically connected to the gate of the first MOS transistor Q3 through the sixth resistor R6, the source of the first MOS transistor Q3 is grounded, the drain of the first MOS transistor Q3, and the second inductor L2
  • One end of the sixth capacitor C6 is electrically connected to the first end of the ultrasonic atomizing sheet J, the other end of the second inductor L2 is electrically connected to the positive pole of the power source, and the other end of the sixth capacitor C6 is grounded.
  • the second driving oscillating circuit 3 includes an amplifier U2, a seventh resistor R7, a second MOS transistor Q4, a third inductor L3, and a seventh capacitor C7.
  • the second output terminal of the control circuit 1 is electrically connected to the second input terminal of the amplifier U2.
  • the second output of the amplifier U2 is electrically connected to the gate of the second MOS transistor Q4 through the seventh resistor R7, the source of the second MOS transistor Q4 is grounded, the drain of the second MOS transistor Q4, and the third inductor L3
  • One end of the seventh capacitor C7 is electrically connected to the second end of the ultrasonic atomizing sheet J, the other end of the third inductor L3 is electrically connected to the positive pole of the power source, and the other end of the seventh capacitor C7 is grounded.
  • the frequency chasing circuit further includes an eighth capacitor C8, a ninth capacitor C9, an eighth resistor R8, a second diode D2, a third diode D3, a cathode of the second diode D2, and a cathode of the third transistor
  • One end of the eighth capacitor C8 and one end of the ninth capacitor C9 are electrically connected to the power terminal of the amplifier U2, and the other end of the second diode D2 is electrically connected to the positive pole of the power source, and the other end of the eighth capacitor C8 and the ninth capacitor C9 The other end is grounded, and the anode of the third diode D3 is grounded through the eighth resistor R8.
  • the ultrasonic atomizing sheet J is a piezoelectric ceramic atomizing sheet, and is suitable for a piezoelectric ceramic atomizing sheet and a component or circuit similar to the piezoelectric ceramic structure.
  • the amplifier U2 and the resistors and capacitors at the front end constitute the entire driving circuit, and the high-voltage driving is adopted, so that the back-end MOS transistor can be completely turned on to form an oscillation, so that the oscillation effect of the entire oscillation circuit is optimized.
  • the first antenna E1 transmits a high-frequency oscillation signal at one end of the ultrasonic atomizing sheet J to the second antenna E2 and the first inductor L1 to constitute the antenna receiving circuit 13.
  • the second capacitor C2 and the first resistor R1 are high frequency band pass filters that filter out low frequency and other harmonic interference.
  • the third capacitor C3, the second resistor R2, the third resistor R3, the first capacitor C1, and the first NPN transistor Q1 are common-emitter high-frequency amplifiers, and the received high-frequency signal is amplified, and then passes through the fourth capacitor C4.
  • the first diode D1 and the fifth capacitor C5 are filtered and shaped to form a half wave of the same frequency that can drive the triode, and then pass through the fifth resistor R5, the fourth resistor R4, and the second NPN transistor Q2, and finally converted into
  • the ultrasonic atomizing sheet J can recognize the square wave of the same frequency of the single-chip microcomputer.
  • the oscillation frequency is adjusted in time, so that the oscillation of the entire circuit and the frequency of the ultrasonic atomizing sheet J are always synchronized, and the maximum atomizing effect and the amount of smoke are achieved.
  • the ultrasonic electronic cigarette circuit includes an ultrasonic atomizing sheet J and a control circuit 1.
  • the first output end of the control circuit 1 is electrically connected to the first end of the ultrasonic atomizing sheet J through the first driving oscillation circuit 2.
  • the second output end of the control circuit 1 is electrically connected to the second end of the ultrasonic atomizing sheet J through the second driving oscillation circuit 3, and further includes a power detecting circuit 4, a detecting end of the power detecting circuit 4 and the ultrasonic atomizing sheet J.
  • One end is electrically connected, and the output of the power detecting circuit 4 is electrically connected to the input of the control circuit 1.
  • the power detecting circuit 4 includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a first diode D1, and a second diode D2.
  • the first capacitor C1 and the third NPN transistor Q7, one end of the ultrasonic atomizing sheet J is sequentially connected to the ground through the first resistor R1, the third resistor R3 and the fifth resistor R5, and the anode of the first diode D1
  • the collector of the third NPN transistor Q7 and the cathode of the second diode D2 are both connected between the third resistor R3 and the fifth resistor R5, and the cathode of the first diode D1 is grounded through the first capacitor C1, and the third
  • the emitter of the NPN type transistor Q7 and the anode of the second diode D2 are both grounded, one end of the second resistor R2 is connected to the third output end of the control circuit 1, and one end of the fourth resistor R4 is connected to the input end of the control circuit 1.
  • One end of the sixth resistor R6 is connected to the fourth output end of the control circuit 1, and the other end of the second resistor R2 and the other end of the fourth resistor R4 are grounded through the first capacitor C1, and the other end of the sixth resistor R6 is The base of the three NPN type transistor Q7 is connected.
  • the first driving oscillating circuit 2 includes an amplifier U2, a seventh resistor R7, a first MOS transistor Q3, a first inductor L1, and a second capacitor C2.
  • the first output terminal of the control circuit 1 is electrically connected to the first input terminal of the amplifier U2.
  • the first output of the amplifier U2 is electrically connected to the gate of the first MOS transistor Q3 through the seventh resistor R7, the source of the first MOS transistor Q3 is grounded, the drain of the first MOS transistor Q3, and the first inductor L1
  • One end of the second capacitor C2 is electrically connected to the first end of the ultrasonic atomizing sheet J, the other end of the first inductor L1 is electrically connected to the positive pole of the power source, and the other end of the second capacitor C2 is grounded.
  • the second driving oscillating circuit 3 includes an amplifier U2, an eighth resistor R8, a second MOS transistor Q4, a second inductor L2, and a third capacitor C3.
  • the second output terminal of the control circuit 1 is electrically connected to the second input terminal of the amplifier U2.
  • the second output of the amplifier U2 is electrically connected to the gate of the second MOS transistor Q4 through the eighth resistor R8, the source of the second MOS transistor Q4 is grounded, the drain of the second MOS transistor Q4, and the second inductor L2
  • One end of the third capacitor C3 is electrically connected to the second end of the ultrasonic atomizing sheet J, the other end of the second inductor L2 is electrically connected to the positive electrode of the power source, and the other end of the third capacitor C3 is grounded.
  • the frequency chasing circuit further includes a power supply circuit 5 including a boosting chip U1, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, a ninth resistor R9, and a tenth resistor R10.
  • a power supply circuit 5 including a boosting chip U1, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, a ninth resistor R9, and a tenth resistor R10.
  • One end of the sixth capacitor C6, the input end and the enable end of the boosting chip U1 are electrically connected to the power supply positive pole, one end of the fourth capacitor C4, one end of the ninth resistor R9, and one end of the fifth capacitor C5 are both connected to the boosting chip.
  • the output end of the U1 is electrically connected, and the output end of the boosting chip U1 is electrically connected to the first driving oscillating circuit 2 and the second driving oscillating circuit 3.
  • the bypass end of the boosting chip U1 is grounded through the seventh capacitor C7, and the ninth resistor R9
  • the other end is grounded through the tenth resistor R10, the other end of the fifth capacitor C5, the other end of the sixth capacitor C6, and the ground terminal of the boosting chip U1 are grounded, and the other end of the fourth capacitor C4 and the feedback of the boosting chip U1
  • the terminal is electrically connected and is connected between the ninth resistor R9 and the tenth resistor R10.
  • the ultrasonic atomizing sheet J is a piezoelectric ceramic atomizing sheet, and is suitable for a piezoelectric ceramic atomizing sheet and a component or circuit similar to the piezoelectric ceramic structure.
  • control circuit 1 controls the indication of the LED lamp and the switch of the MOS tube through the 51-core single-chip microcomputer to realize low power consumption and safety protection of the entire circuit board, and detects the voltage and current changes of the ultrasonic atomizing sheet J in real time, The ultrasonic atomizing sheet J is prevented from being dry and overloaded, and the PWM signal is also provided for the back end driving circuit and the real-time frequency chasing is realized by the power detecting circuit 4.
  • the driving circuit amplifies the two-way PWM signal provided by the control circuit 1 through the driving chip, and drives the inductance and capacitance in the bilateral oscillating circuit to resonate with the ultrasonic atomizing sheet J, so that the ultrasonic atomizing sheet J performs full-wave oscillation to achieve the best. Atomization effect.
  • the power circuit 5 is composed of a single-cell lithium battery charge and discharge protection circuit and a booster circuit, and has an overcharge and overvoltage protection function while preventing overcurrent and short circuit of the back circuit.
  • the single-cell Lithium-Ion boost module uses a single-cell lithium battery boost to provide approximately 30W of power to the back-end high-frequency excitation bilateral oscillator circuit.
  • the amplitude of the ultrasonic atomizing sheet J is first collected by the three voltage dividing resistors of the first resistor R1, the third resistor R3, and the fifth resistor R5, and the second diode D2 is a voltage regulator tube. Prevent the acquisition resistor from having a problem when the acquisition voltage is too high and the microcontroller pin is burned out.
  • Principle of power detection First, the Switch signal of the fourth output terminal of the control circuit 1 is pulled low, and the third NPN transistor Q7 is turned off. At this time, the first capacitor C1 is charged by the voltage divider of the acquisition resistor, and the first diode D1 prevents energy release during charging.
  • the collecting resistor When the collecting resistor is fixedly collecting dozens of ultrasonic atomizing sheets J oscillation period, the charging voltage of the first capacitor C1 reaches a certain value. At this time, the third NPN type transistor Q7 is turned on, the fifth resistor R5 is short-circuited, and the collecting voltage is zero. The charging is stopped, and the voltage is detected by the ADC port of the single chip. The power of the ultrasonic atomizing sheet J is converted according to the detected capacitance voltage. After the voltage is detected by the ADC port, the Discharge port of the single chip is pulled low, and the charging amount of the first capacitor C1 is completely completed.
  • the oscillation power of the atomization sheet is detected cyclically and the frequency of the oscillation circuit is adjusted at the same time.
  • the oscillation frequency is closest to the ultrasonic atomization sheet J itself.
  • Frequency the amount of smoke of the electronic cigarette is also the largest, through the power detection method can eliminate the interference of other components in the circuit, can be more Accurately and reliably realize the fast and accurate frequency chasing of the ultrasonic atomizing sheet J, thereby ensuring that the amount of smoke of the electronic cigarette is always maximized and improving the performance of the product.

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Abstract

本发明公开了一种超声波电子烟电路及该超声波电子烟，其中超声波电子烟电路包括超声雾化片、控制电路、第一驱动振荡电路、第二驱动振荡电路和电源电路，控制电路通过第一驱动振荡电路与超声雾化片的第一端电连接，控制电路通过第二驱动振荡电路与超声雾化片的第二端电连接；还包括检测电路，检测电路的输出端与控制电路电连接，检测电路的检测端接在超声雾化片与第一驱动振荡电路之间，或超声雾化片与第二驱动振荡电路之间。本发明使超声雾化片两端同时工作，工作效率高，发热量小，能量损耗低，使用寿命长；供电成本低，体积小；在超声雾化片固有频率偏移时，能快速调整振荡频率，使其始终处于谐振状态，最大限度地保持高效稳定的雾化效果。

Description

一种超声波电子烟电路及该超声波电子烟 技术领域
本发明属于电子烟技术领域，特别涉及一种超声波电子烟电路及该超声波电子烟。
背景技术
现有超声波电子烟电路仅为一路驱动，即，控制电路依次通过驱动电路、振荡电路与超声雾化片的一端电连接，从而导致超声波电子烟超声雾化片不能满负荷工作，超声雾化片只能半波振荡，效率低，发热严重，超声雾化片损耗快。同时，电源电路包括多节锂电池，电压值不同的工作电压和振荡电压分别由不同的锂电池组提供，因而成本较高且体积大。
发明内容
现有的超声波电子烟仅为一路驱动，不能满负荷工作，超声雾化片只能半波振荡，效率低，发热严重，超声雾化片损耗快；包含多节锂电池，成本高且体积大。本发明的目的在于，针对上述现有技术的不足，提供一种超声波电子烟电路及该超声波电子烟，超声雾化片两端同时工作，超声雾化片工作效率高，发热量小，能量损耗低，使用寿命长，成本低，体积小。
为解决上述技术问题，本发明所采用的技术方案是：
一种超声波电子烟电路，包括超声雾化片、控制电路、第一驱动振荡电路和电源电路，所述控制电路通过第一驱动振荡电路与超声雾化片的第一端电连接，控制电路、第一驱动振荡电路均与电源电路电连接，其特点是还包括第二驱动振荡电路，所述控制电路通过第二驱动振荡电路与超声雾化片的第二端电连接，第二驱动振荡电路与电源电路电连接。
借由上述结构，电源电路为第一驱动振荡电路、第二驱动振荡电路提供电源，控制电路控制第一驱动振荡电路、第二驱动振荡电路发出信号，促使超声雾化片雾化烟油，产生烟雾。由于超声雾化片两端同时工作，此时超声雾化片处于谐振状态，从而极大地提高了超声雾化片的工作效率，使超声波电子烟在产生同样烟雾量的情况下发热量最小，功耗更低，使用寿命更长。
进一步地，还包括用于检测超声雾化片工作状态的检测电路，所述检测电路的输出端与控制电路电连接，所述检测电路的检测端接在超声雾化片与第一驱动振荡电路之间，或者检测电路的检测端接在超声雾化片与第二驱动振荡电路之间。
由于超声波电子烟在工作的时候，超声雾化片的固有振荡频率会随着压力、温度、工作时长等参数的变化而偏移，因而需要检测电路检测超声雾化片的实际工作状态，检测电路将检测到的信号发送至控制电路，从而控制电路控制输出的PWM信号频率，使得超声雾化片一直处于谐振状态，提高工作效率和雾化效果。
进一步地，所述第一驱动振荡电路包括第一驱动电路和第一振荡电路，所述第二驱动振荡电路包括第二驱动电路和第二振荡电路；所述控制电路依次通过第一驱动电路、第一振荡电路与超声雾化片的第一端电连接，控制电路、第一驱动电路和第一振荡电路均与电源电路电连接，所述控制电路依次通过第二驱动电路、第二振荡电路与超声雾化片的第二端电连接，第二驱动电路和第二振荡电路均与电源电路电连接。
借由上述结构，电源电路为驱动电路和振荡电路提供电源，驱动电路用于开关并驱动振荡电路，振荡电路通过驱动电路提供的驱动信号使超声雾化片谐振。 控制电路通过第一驱动电路和第二驱动电路同时产生驱动信号，促使超声雾化片雾化烟油，产生烟雾。由于超声雾化片两端同时工作，此时超声雾化片处于谐振状态，从而极大地提高了超声雾化片的工作效率，使超声波电子烟在产生同样烟雾量的情况下发热量最小，功耗更低，使用寿命更长。
进一步地，所述第一振荡电路包括第一MOS管、第一电感和第一电容，第一MOS管的栅极与第一驱动电路的输出端相连，第一MOS管的源极接地，第一电感接在电源电路与第一MOS管的漏极之间，第一电容接在第一MOS管的漏极与地之间，第一MOS管的漏极与超声雾化片的第一端电连接。
进一步地，所述第二振荡电路包括第二MOS管、第二电感和第二电容，第二MOS管的栅极与第二驱动电路的输出端相连，第二MOS管的源极接地，第二电感接在电源电路与第二MOS管的漏极之间，第二电容接在第二MOS管的漏极与地之间，第二MOS管的漏极与超声雾化片的第二端电连接。
进一步地，所述控制电路控制第一驱动电路和第二驱动电路在同一时刻分别输出相位相反、频率相等的驱动电平至超声雾化片。
借由上述结构，当第一驱动电路输出高电平时，第二驱动电路输出频率相同的低电平；当第一驱动电路输出低电平时，第二驱动电路输出频率相同的高电平，这样循环工作，使超声雾化片工作效率达到最优，烟雾量最大。
进一步地，所述电源电路包括单节锂电池、充放电电路和升压电路，所述升压电路包括第一升压电路和第二升压电路，所述单节锂电池通过充放电电路分别与第一升压电路与第二升压电路电连接，所述控制电路、第一驱动电路、第二驱动电路均与第一升压电路的输出端电连接，所述第一振荡电路和第二振荡电路均与第二升压电路的输出端电连接。
借由上述结构，可以利用单节锂电池为整个超声波电子烟电路供电，要求的电子元器件更少，从而成本更低，效率更高，体积更小。
作为第一种优选方式，所述检测电路为电压电流检测电路，所述电压电流检测电路的输出端与控制电路电连接；所述电压电流检测电路接在超声雾化片与第一振荡电路之间，或者电压电流检测电路接在超声雾化片与第二振荡电路之间。。
借由上述结构，通过电压电流检测电路检测超声雾化片的工作电压和工作电流，电压电流检测电路将检测到的电压值和电流值反馈至控制电路，控制电路根据电压峰峰值与电流峰峰值，可以快速找到超声雾化片的谐振频率，再根据谐振频率控制超声雾化片工作，进一步提高超声雾化片的工作效率。
作为第二种优选方式，所述检测电路包括与超声雾化片一端电连接的用于检测超声雾化片振荡时发射的高频电磁波信号的第一天线、用于接收第一天线发射信号的天线接收电路，天线接收电路依次通过滤波放大电路、滤波整形及方波转换电路与控制电路的输入端电连接。
超声雾化片在高频谐振的状态下会向外辐射相同频率的电磁波，而最接近超声雾化片谐振频率时的电磁波信号最强，通过超声雾化片附近的第一天线和天线接收电路可以接收到辐射出来的电磁波信号，然后再经过滤波放大电路进行带通滤波和放大，经过滤波整形及方波转换电路转换成控制电路可以识别的方波信号后输出到控制电路，控制电路根据检测到的方波频率来调整输出的PWM信号的频率，从而使得整个驱动振荡电路与超声雾化片偏移后的频率保持一致，使驱动振荡电路能够快速准确地产生和超声雾化片相同的振荡频率，从而超声雾化片始终处于谐振状态，最大限度地保持高效稳定的雾化效果，烟雾量大，产品使用周期长。这种频率检测方式可以排除振荡电路的杂波干扰，更加准确可靠，同时由于电磁波传播时间几乎可以忽略不计，因此可以达到实时检测、同步调整振荡频率的目的，这样即使超声雾化片的固有频率因为压力、温度、使用时长等其他因 素发生偏移，驱动振荡电路也能同步调整频率，实现追频。
进一步地，所述天线接收电路包括第二天线与第一电感，滤波放大器和第二天线均与第一电感的第一端电连接，第一电感的第二端接地。
作为第三种优选方式，所述检测电路为功率检测电路，功率检测电路的检测端与超声雾化片的一端电连接，功率检测电路的输出端与控制电路的输入端电连接。
由于当超声雾化片功率最大时振荡频率最接近超声雾化片本身频率，电子烟的烟雾量也最大，通过功率检测的方式能排除电路中其他元器件的干扰，可以更加准确可靠地实现超声雾化片的快速准确追频，从而保证电子烟的烟雾量一直最大，提升产品性能，延长了电子烟的产品使用周期，能通过较小的功率实现烟雾量的持续最大化。
基于同一个发明构思，本发明还提供了一种超声波电子烟，包括所述的超声波电子烟电路。
与现有技术相比，本发明使超声雾化片两端同时工作，超声雾化片工作效率高，发热量小，能量损耗低，使用寿命长；利用单节锂电池供电，成本低，体积小；在超声雾化片随着压力、温度、工作时长等参数变化导致固有频率发生偏移的时候，能快速准确地检测到变化后超声雾化片的频率并提供给控制电路，使其及时调整振荡频率，让超声雾化片始终处于谐振状态，最大限度地保持高效稳定的雾化效果。
附图说明
图1为本发明实施例一的方框结构示意图。
图2为实施例一的电路图。
图3为本发明实施例二的方框结构示意图。
图4至图8组成实施例二的电路图。
图9为实施例二的工作流程图。
图10为本发明实施例三的方框结构示意图。
图11为实施例三的电路图。
图12为本发明实施例四的方框结构示意图。
图13为实施例四的电路图。
其中，1为控制电路，2为第一驱动振荡电路，201为第一驱动电路，202为第一振荡电路，3为第二驱动振荡电路，301为第二驱动电路，302为第二振荡电路，4为功率检测电路，5为电源电路，J为超声雾化片，6为滤波整形及方波转换电路，7为滤波放大电路，8为单节锂电池，9为充放电电路，10为第一升压电路，11为第二升压电路，12为电压电流检测电路，13为天线接收电路，C1为第一电容，C2为第二电容，C3为第三电容，C4为第四电容，C5为第五电容，C6为第六电容，C7为第七电容，C8为第八电容，C9为第九电容，D1为第一二极管，D2为第二二极管，D3为第三二极管，E1为第一天线，E2为第二天线，L1为第一电感，L2为第二电感，L3为第三电感，Q1为第一NPN型三极管，Q2为第二NPN型三极管，Q3为第一MOS管，Q4为第二MOS管，Q5为第一PNP型三极管，Q6为第二PNP型三极管，Q7为第三NPN型三极管，R1为第一电阻，R2为第二电阻，R3为第三电阻，R4为第四电阻，R5为第五电阻，R6为第六电阻，R7为第七电阻，R8为第八电阻，R9为第九电阻，R10为第十电阻，U1为升压芯片，U2为放大器。
具体实施方式
实施例一
如图1和图2所示，超声波电子烟电路包括超声雾化片J、控制电路1、第一驱动振荡电路2和电源电路5，所述控制电路1通过第一驱动振荡电路2与超声雾化片J的第一端电连接，控制电路1、第一驱动振荡电路2均与电源电路5电连接，还包括第二驱动振荡电路3，所述控制电路1通过第二驱动振荡电路3与超声雾化片J的第二端电连接，第二驱动振荡电路3与电源电路5电连接。
所述第一驱动振荡电路2包括第一驱动电路201和第一振荡电路202，所述第二驱动振荡电路3包括第二驱动电路301和第二振荡电路302；所述控制电路1依次通过第一驱动电路201、第一振荡电路202与超声雾化片J的第一端电连接，控制电路1、第一驱动电路201和第一振荡电路202均与电源电路5电连接，所述控制电路1依次通过第二驱动电路301、第二振荡电路302与超声雾化片J的第二端电连接，第二驱动电路301和第二振荡电路302均与电源电路5电连接。
所述超声雾化片J为无孔的压电陶瓷雾化片。
所述第一振荡电路202包括第一MOS管Q3、第一电感L1和第一电容C1，第一MOS管Q3的栅极与第一驱动电路201的输出端相连，第一MOS管Q3的源极接地，第一电感L1接在电源电路5与第一MOS管Q3的漏极之间，第一电容C1接在第一MOS管Q3的漏极与地之间，第一MOS管Q3的漏极与超声雾化片J的第一端电连接。
所述第二振荡电路302包括第二MOS管Q4、第二电感L2和第二电容C2，第二MOS管Q4的栅极与第二驱动电路301的输出端相连，第二MOS管Q4的源极接地，第二电感L2接在电源电路5与第二MOS管Q4的漏极之间，第二电容C2接在第二MOS管Q4的漏极与地之间，第二MOS管Q4的漏极与超声雾化片J的第二端电连接。
所述控制电路1控制第一驱动电路201和第二驱动电路301在同一时刻分别输出相位相反、频率相等的驱动电平至超声雾化片J。
所述第二驱动电路301与第二振荡电路302之间连有第一电阻R1，所述第一驱动电路201与第一振荡电路202之间连有第二电阻R2，所述第二驱动电路301与控制电路1之间连有第三电阻R3，所述第一驱动电路201与控制电路1之间连有第四电阻R4。
第一电阻R1、第二电阻R2、第三电阻R3和第四电阻R4起到限流作用，防止超声雾化片J短路而烧毁前端电路。
所述第一驱动电路201包括第一NPN型三极管Q1、第一PNP型三极管Q5和第三电容C3，所述第一NPN型三极管Q1的基极和第一PNP型三极管Q5的基极均与控制电路1相连，所述第一NPN型三极管Q1的发射极和第一PNP型三极管Q5的发射极均与第一振荡电路202相连，第一NPN型三极管Q1的集电极与电源电路5相连并通过第三电容C3接地，第一PNP型三极管Q5的集电极接地。
所述第二驱动电路301包括第二NPN型三极管Q2、第二PNP型三极管Q6和第四电容C4，所述第二NPN型三极管Q2的基极和第二PNP型三极管Q6的基极均与控制电路1相连，所述第二NPN型三极管Q2的发射极和第二PNP型三极管Q6的发射极均与第二振荡电路302相连，第二NPN型三极管Q2的集电极与电源电路5相连并通过第四电容C4接地，第二PNP型三极管Q6的集电极接地。
实施例一还包括第五电阻R5、第六电阻R6、第七电阻R7和第八电阻R8，所述第五电阻R5的一端接在第二驱动电路301与第二振荡电路302之间，第五电阻R5的另一端接地；第六电阻R6的一端接在控制电路1与第一驱动电路201 之间，第六电阻R6的另一端接地；第七电阻R7的一端接在控制电路1与第二驱动电路301之间，第七电阻R7的另一端接地；第八电阻R8的一端接在第一驱动电路201与第一振荡电路202之间，第八电阻R8的另一端接地。
第六电阻R6和第七电阻R7可以起到增加低电平驱动能力的作用。
实施例一的工作原理如下：
1.电源电路5分别为驱动电路和振荡电路提供有效电压值。驱动电路对控制电路1输出的PWM信号(脉宽调制信号)进行信号放大，去驱动振荡电路的MOS管(金属氧化物场效应晶体管)，使振荡电路的MOS管能够完全开启或关闭，达到最大的电流导通或截断效果，从而使振荡电路在较低的电源电压下充分谐振，为与其连接的压电陶瓷雾化片提供高效的振荡频率和振荡幅值，使压电陶瓷雾化片振荡工作效率达到最优。
2.驱动电路为一个P型三极管和一个N型三极管链接组成的图腾柱，分为左右两边即第一驱动电路201和第二驱动电路301，通过放大控制电路1中单片机提供的与超声雾化片J固有频率匹配的PWM信号，使左右两边即第一振荡电路202和第二振荡电路302同时产生相同频率且相反相位的高频信号，驱动超声雾化片J围绕轴心按照正弦波上下振荡，并使超声雾化片J上的烟油、类似烟油的液体或混合物产生最大的烟雾量。当第一驱动电路201输出一个高电平时，第二驱动电路301产生频率相同相位相反的低电平；当第一驱动电路201输出一个低电平时，第二驱动电路301同时产生频率相同相位相反的高电平，这样周而复始，使超声雾化片J工作效率达到最优，能量损耗最小，以较小的功率实现烟雾量的最大化。
3.震荡电路是将驱动电路放大的PWM信号通过与之连接的电感电容以及超声雾化片J本身的静电容一起产生谐振，形成正弦波，从而有效地驱动超声雾化片J。如图2所述，PWM1信号的频率等于超声雾化片J的固有频率，当PWM1输出高电平到第一驱动电路201时，第一NPN型三极管Q1导通，第一PNP型三极管Q5关断，从而输出高电平VDD1打开第一MOS管Q3，第一电感L1充电，第一电容C1放电；同时PWW2输出与PWM1信号相位相反，频率、幅度相等的低电平信号到第二驱动电路301，第二NPN型三极管Q2关断，第二PNP型三极管Q6导通，从而输出低电平GND关断第二MOS管Q4，第二电感L2放电，第二电容C2充电，电压通过第二电感L2、第一电容C1开始驱动超声雾化片J振荡。当PWM1输出低电平到第一驱动电路201时，第一NPN型三极管Q1关断，第一PNP型三极管Q5导通，从而输出低电平GND关断第一MOS管Q3，第一电感L1放电，第一电容C1充电；同时PWW2输出与PWM1信号相位相反，频率、幅度相等的高电平信号到第二驱动电路301，第二NPN型三极管Q2导通，第二PNP型三极管Q6关断，从而输出高电平VDD1打开第二MOS管Q4，第二电感L2充电，第二电容C2放电，电压通过第一电感L1、第二电容C2开始对驱动超声雾化片J振荡。这样周而复始，使超声雾化片J反复震荡，工作效率达到最优，能量损耗最小，以较小的功率实现烟雾量的最大化。
4.第一电阻R1、第二电阻R2、第三电阻R3和第四电阻R4起到限流作用，防止雾化片短路烧毁前端电路，第三电容C3和第四电容C4可以稳定电源电压，第六电阻R6和第七电阻R7起到增加低电平驱动能力的作用。
实施例二
如图3至图8所示，本发明实施例二重复实施例一，区别在于，所述电源电路5包括单节锂电池8、充放电电路9和升压电路，所述升压电路包括第一升压电路10和第二升压电路11，所述单节锂电池8通过充放电电路9分别与第一 升压电路10与第二升压电路11电连接，所述控制电路1、第一驱动电路201、第二驱动电路301均与第一升压电路10的输出端电连接，所述第一振荡电路202和第二振荡电路302均与第二升压电路11的输出端电连接。
实施例二还包括电压电流检测电路12，所述电压电流检测电路12的输出端与控制电路1电连接；电压电流检测电路12接在超声雾化片J与第二振荡电路302之间(所述电压电流检测电路12也可接在超声雾化片J与第一振荡电路202之间)。
图9中示出本发明的大致工作过程。实施例二中的电源由单节锂电池8经过升压提供。
升压电路包括将单节锂电池8电压升到3.3V/5V的第一升压电路10和将单节锂电池8电压升到16V左右的第二升压电路11。升压电路采用专用BOOST升压芯片，通过控制外置MOS管的不断开关，给后端二极管及电解电容充电，将单节锂电池8电压稳定升至16V左右，达到30W左右的输出功率及85％以上的转换效率，同时伴有过流保护电路，以满足后端超声雾化电路的供电需求。另外将单节锂电池8电压升到3.3V/5V，给单片机及驱动电路供电。
充放电电路9通过锂电池充电芯片实现5V/2A的USB接口充电，具有过充和过压保护功能，放电保护电路保护电源部分为整个电路提供所需正确的电压，同时防止后端电路过流及短路，造成对电池的损害。
控制电路1通过51系列单片机控制LED灯的指示及MOS管的开关来实现整个电路板的低功耗和安全保护，并且进行AD检测实时检测超声雾化片J的电压电流变化情况，防止超声雾化片J干烧及频偏，同时也为后端驱动电路提供PWM信号。
震荡电路通过图腾电路对PWM信号的增强来驱动后端震荡电路充分震荡，使雾化片进行LC全波震荡，提高工作效率。
电压电流检测电路12接在超声雾化片J的电源端，用来检测超声雾化片J工作时候的电压电流变化，超声雾化片J频率发生偏移时负载的电流也会有相应变化，通过电压电流检测电路12检测超声雾化片J上电压的峰峰值和电流的峰峰值，快速找到超声雾化片J的谐振频率，根据检测到的电压电流变化及时调整输出的PWM波频率，达到追频的效果，使超声雾化片J时刻保持高效率的全波震荡，以达到用最小的功耗实现最大的烟雾量。
实施例三
如图10和图11所示，超声波电子烟电路包括超声雾化片J、控制电路1，控制电路1的第一输出端通过第一驱动振荡电路2与超声雾化片J的第一端电连接，控制电路1的第二输出端通过第二驱动振荡电路3与超声雾化片J的第二端电连接，还包括与超声雾化片J一端电连接的用于检测超声雾化片J振荡时发射的高频电磁波信号的第一天线E1、用于接收第一天线E1发射信号的天线接收电路13，天线接收电路13依次通过滤波放大电路7、滤波整形及方波转换电路6与控制电路1的输入端电连接。
追频电路还包括电源电路5，电源电路5由单节锂电池充放电保护电路和升压电路组成，给各个电路模块提供工作电源。充放电保护电路具有过充和过压保护功能，能防止后端电路过流及短路。升压电路采用单节锂电池升压到16V的方式，为后端驱动振荡电路提供大约30W功率的电源。
控制电路1用于控制各个电路模块的工作开关及输出PWM信号。控制电路1通过51内核单片机控制LED灯的指示及MOS管的开关来实现整个电路板的低功耗和安全保护，并且实时检测超声雾化片J的电压电流变化情况，防止超 声雾化片J干烧及过载，同时也为后端驱动振荡电路提供PWM信号和进行追频。
驱动振荡电路通过驱动芯片对控制电路1提供的PWM信号进行放大，驱动后端振荡电路中的电感电容谐振，使超声雾化片J进行全波振荡，达到最佳雾化效果。
所述天线接收电路13包括第二天线E2与第一电感L1，滤波放大器和第二天线E2均与第一电感L1的第一端电连接，第一电感L1的第二端接地。
所述滤波放大电路7包括第一电容C1、第二电容C2、第三电容C3、第一电阻R1、第二电阻R2、第三电阻R3、第一NPN型三极管Q1，第二电容C2与第一电阻R1的一端均与第三电容C3的一端电连接，第二电容C2的另一端与第一电感L1的第一端电连接，第一电阻R1的另一端接地，第三电容C3的另一端和第二电阻R2的一端均与第一NPN型三极管Q1的基极电连接，第二电阻R2的另一端和第三电阻R3的一端均与电源正极电连接，第三电阻R3的另一端和第一电容C1的一端均与第一NPN型三极管Q1的集电极电连接，第一电容C1的另一端与滤波整形及方波转换电路6电连接，第一NPN型三极管Q1的发射极接地。
所述滤波整形及方波转换电路6包括第四电容C4、第五电容C5、第一二极管D1、第四电阻R4、第五电阻R5、第二NPN型三极管Q2，第四电容C4的一端和第一电容C1的一端均与第一二极管D1的阳极电连接，第四电阻R4的一端和第五电容C5的一端均与第一二极管D1的阴极电连接，第四电阻R4的另一端与第二NPN型三极管Q2的基极电连接，第四电容C4的另一端、第五电容C5的另一端、第二NPN型三极管Q2的发射极均接地，第五电阻R5的一端与电源正极电连接，控制电路1的输入端、第五电阻R5的另一端均与第二NPN型三极管Q2的集电极电连接。
所述第一驱动振荡电路2包括放大器U2、第六电阻R6、第一MOS管Q3、第二电感L2、第六电容C6，控制电路1的第一输出端与放大器U2的第一输入端电连接，放大器U2的第一输出端通过第六电阻R6与第一MOS管Q3的栅极电连接，第一MOS管Q3的源极接地，第一MOS管Q3的漏极、第二电感L2的一端、第六电容C6的一端均与超声雾化片J的第一端电连接，第二电感L2的另一端与电源正极电连接，第六电容C6的另一端接地。
所述第二驱动振荡电路3包括放大器U2、第七电阻R7、第二MOS管Q4、第三电感L3、第七电容C7，控制电路1的第二输出端与放大器U2的第二输入端电连接，放大器U2的第二输出端通过第七电阻R7与第二MOS管Q4的栅极电连接，第二MOS管Q4的源极接地，第二MOS管Q4的漏极、第三电感L3的一端、第七电容C7的一端均与超声雾化片J的第二端电连接，第三电感L3的另一端与电源正极电连接，第七电容C7的另一端接地。
追频电路还包括第八电容C8、第九电容C9、第八电阻R8、第二二极管D2、第三二极管D3，第二二极管D2的阴极、第三三极管的阴极、第八电容C8的一端、第九电容C9的一端均与放大器U2的电源端电连接，第二二极管D2的另一端与电源正极电连接，第八电容C8另一端和第九电容C9的另一端均接地，第三二极管D3的阳极通过第八电阻R8接地。
所述超声雾化片J为压电陶瓷式雾化片，适用于压电陶瓷式雾化片及类似压电陶瓷结构的元器件或电路。
具体地，放大器U2及前端的电阻电容构成整个驱动电路，采用高压驱动，使后端MOS管能够完全开启形成振荡，使整个振荡电路的振荡效果达到最优。第一天线E1使超声雾化片J一端的高频振荡信号发射出去第二天线E2和第一电感L1构成天线接收电路13。第二电容C2和第一电阻R1为高频带通滤波器， 滤除低频及其它谐波干扰。第三电容C3、第二电阻R2、第三电阻R3、第一电容C1、第一NPN型三极管Q1为共射极高频放大器，将接收到的高频信号进行放大，然后经过第四电容C4、第一二极管D1、第五电容C5的滤波整形，形成可以驱动三极管的相同频率的半波，再经过第五电阻R5、第四电阻R4、第二NPN型三极管Q2，最终转换成与超声雾化片J相同频率的单片机可以识别的方波。通过检测超声雾化片J的谐振频率，从而及时调整振荡频率，使整个电路的振荡与超声雾化片J的频率始终同步，达到最大雾化效果及烟雾量。
实施例四
如图12和图13所示，超声波电子烟电路包括超声雾化片J、控制电路1，控制电路1的第一输出端通过第一驱动振荡电路2与超声雾化片J的第一端电连接，控制电路1的第二输出端通过第二驱动振荡电路3与超声雾化片J的第二端电连接，还包括功率检测电路4，功率检测电路4的检测端与超声雾化片J的一端电连接，功率检测电路4的输出端与控制电路1的输入端电连接。
所述功率检测电路4包括第一电阻R1、第二电阻R2、第三电阻R3、第四电阻R4、第五电阻R5、第六电阻R6、第一二极管D1、第二二极管D2、第一电容C1和第三NPN型三极管Q7，超声雾化片J的一端依次通过第一电阻R1、第三电阻R3与第五电阻R5与地相接，第一二极管D1的阳极、第三NPN型三极管Q7的集电极、第二二极管D2的阴极均接在第三电阻R3与第五电阻R5之间，第一二极管D1的阴极通过第一电容C1接地，第三NPN型三极管Q7的发射极与第二二极管D2的阳极均接地，第二电阻R2的一端与控制电路1的第三输出端相连，第四电阻R4的一端与控制电路1的输入端相连，第六电阻R6的一端与控制电路1的第四输出端相连，第二电阻R2的另一端与第四电阻R4的另一端均通过第一电容C1接地，第六电阻R6的另一端与第三NPN型三极管Q7的基极相连。
所述第一驱动振荡电路2包括放大器U2、第七电阻R7、第一MOS管Q3、第一电感L1、第二电容C2，控制电路1的第一输出端与放大器U2的第一输入端电连接，放大器U2的第一输出端通过第七电阻R7与第一MOS管Q3的栅极电连接，第一MOS管Q3的源极接地，第一MOS管Q3的的漏极、第一电感L1的一端、第二电容C2的一端均与超声雾化片J的第一端电连接，第一电感L1的另一端与电源正极电连接，第二电容C2的另一端接地。
所述第二驱动振荡电路3包括放大器U2、第八电阻R8、第二MOS管Q4、第二电感L2、第三电容C3，控制电路1的第二输出端与放大器U2的第二输入端电连接，放大器U2的第二输出端通过第八电阻R8与第二MOS管Q4的栅极电连接，第二MOS管Q4的源极接地，第二MOS管Q4的的漏极、第二电感L2的一端、第三电容C3的一端均与超声雾化片J的第二端电连接，第二电感L2的另一端与电源正极电连接，第三电容C3的另一端接地。
追频电路还包括电源电路5，所述电源电路5包括升压芯片U1、第四电容C4、第五电容C5、第六电容C6、第七电容C7、第九电阻R9和第十电阻R10，第六电容C6的一端、升压芯片U1的输入端和使能端均与供电正极电连接，第四电容C4的一端、第九电阻R9的一端、第五电容C5的一端均与升压芯片U1的输出端电连接，升压芯片U1的输出端与第一驱动振荡电路2及第二驱动振荡电路3电连接，升压芯片U1的旁路端通过第七电容C7接地，第九电阻R9的另一端通过第十电阻R10接地，第五电容C5的另一端、第六电容C6的另一端、升压芯片U1的接地端均接地，第四电容C4的另一端与升压芯片U1的反馈端电连接且接入第九电阻R9与第十电阻R10之间。
所述超声雾化片J为压电陶瓷式雾化片，适用于压电陶瓷式雾化片及类似压电陶瓷结构的元器件或电路。
在实施例四中，控制电路1通过51内核单片机控制LED灯的指示及MOS管的开关来实现整个电路板的低功耗和安全保护，并且实时检测超声雾化片J的电压电流变化情况，防止超声雾化片J干烧及过载，同时也为后端驱动电路提供PWM信号和通过功率检测电路4实现实时追频。
驱动电路通过驱动芯片对控制电路1提供的双路PWM信号进行放大后，来驱动双边振荡电路中的电感电容与超声雾化片J谐振，使超声雾化片J进行全波振荡，达到最佳雾化效果。
电源电路5由单节锂电池充放电保护电路和升压电路组成，具有过充和过压保护功能，同时防止后端电路过流及短路。单节锂电升压模块采用单节锂电池升压的方式，为后端高频它激式双边振荡电路提供大约30W功率的电源。
功率检测电路4中，通过第一电阻R1、第三电阻R3、第五电阻R5这三个分压电阻先采集超声雾化片J振荡时候的振幅，第二二极管D2为稳压管，防止采集电阻出现问题时采集电压过高而烧坏单片机引脚。功率检测原理：首先控制电路1第四输出端的Switch信号拉低，第三NPN型三极管Q7截止，此时通过采集电阻分压给第一电容C1充电，第一二极管D1防止充电时能量释放，当采集电阻固定采集几十个超声雾化片J振荡周期后，第一电容C1充电电压达到一定值，此时打开第三NPN型三极管Q7，将第五电阻R5短路，采集电压为零，停止充电，同时单片机ADC端口进行电压检测，根据检测到的电容电压的大小换算成超声雾化片J的功率，ADC端口完成电压检测后单片机Discharge端口拉低，将第一电容C1所充电量完全释放掉，从而为下一个功率检测周期做准备，这样周而复始循环检测雾化片的振荡功率，同时调整振荡电路的频率，当超声雾化片J功率最大时振荡频率最接近超声雾化片J本身频率，电子烟的烟雾量也最大，通过功率检测的方式能排除电路中其他元器件的干扰，可以更加准确可靠地实现超声雾化片J的快速准确追频，从而保证电子烟的烟雾量一直最大，提升产品性能。
上面结合附图对本发明的实施例进行了描述，但是本发明并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是局限性的，本领域的普通技术人员在本发明的启示下，在不脱离本发明宗旨和权利要求所保护的范围情况下，还可做出很多形式，这些均属于本发明的保护范围之内。

Claims (12)

  1. 一种超声波电子烟电路，包括超声雾化片(J)、控制电路(1)、第一驱动振荡电路(2)和电源电路(5)，所述控制电路(1)通过第一驱动振荡电路(2)与超声雾化片(J)的第一端电连接，控制电路(1)、第一驱动振荡电路(2)均与电源电路(5)电连接，其特征在于，还包括第二驱动振荡电路(3)，所述控制电路(1)通过第二驱动振荡电路(3)与超声雾化片(J)的第二端电连接，第二驱动振荡电路(3)与电源电路(5)电连接。
  2. 如权利要求1所述的超声波电子烟电路，其特征在于，还包括用于检测超声雾化片(J)工作状态的检测电路，所述检测电路的输出端与控制电路(1)电连接，所述检测电路的检测端接在超声雾化片(J)与第一驱动振荡电路(2)之间，或者检测电路的检测端接在超声雾化片(J)与第二驱动振荡电路(3)之间。
  3. 如权利要求2所述的超声波电子烟电路，其特征在于，所述第一驱动振荡电路(2)包括第一驱动电路(201)和第一振荡电路(202)，所述第二驱动振荡电路(3)包括第二驱动电路(301)和第二振荡电路(302)；所述控制电路(1)依次通过第一驱动电路(201)、第一振荡电路(202)与超声雾化片(J)的第一端电连接，控制电路(1)、第一驱动电路(201)和第一振荡电路(202)均与电源电路(5)电连接，所述控制电路(1)依次通过第二驱动电路(301)、第二振荡电路(302)与超声雾化片(J)的第二端电连接，第二驱动电路(301)和第二振荡电路(302)均与电源电路(5)电连接。
  4. 如权利要求3所述的超声波电子烟电路，其特征在于，所述第一振荡电路(202)包括第一MOS管(Q3)、第一电感(L1)和第一电容(C1)，第一MOS管(Q3)的栅极与第一驱动电路(201)的输出端相连，第一MOS管(Q3)的源极接地，第一电感(L1)接在电源电路(5)与第一MOS管(Q3)的漏极之间，第一电容(C1)接在第一MOS管(Q3)的漏极与地之间，第一MOS管(Q3)的漏极与超声雾化片(J)的第一端电连接。
  5. 如权利要求3所述的超声波电子烟电路，其特征在于，所述第二振荡电路(302)包括第二MOS管(Q4)、第二电感(L2)和第二电容(C2)，第二MOS管(Q4)的栅极与第二驱动电路(301)的输出端相连，第二MOS管(Q4)的源极接地，第二电感(L2)接在电源电路(5)与第二MOS管(Q4)的漏极之间，第二电容(C2)接在第二MOS管(Q4)的漏极与地之间，第二MOS管(Q4)的漏极与超声雾化片(J)的第二端电连接。
  6. 如权利要求3至5任一项所述的超声波电子烟电路，其特征在于，所述控制电路(1)控制第一驱动电路(201)和第二驱动电路(301)在同一时刻分别输出相位相反、频率相等的驱动电平至超声雾化片(J)。
  7. 如权利要求3至5任一项所述的超声波电子烟电路，其特征在于，所述电源电路(5)包括单节锂电池(8)、充放电电路(9)和升压电路，所述升压电路包括第一升压电路(10)和第二升压电路(11)，所述单节锂电池(8)通过充放电电路(9)分别与第一升压电路(10)与第二升压电路(11)电连接，所述控制电路(1)、第一驱动电路(201)、第二驱动电路(301)均与第一升压电路(10)的输出端电连接，所述第一振荡电路(202)和第二振荡电路(302)均与第二升压电路(11)的输出端电连接。
  8. 如权利要求2至5任一项所述的超声波电子烟电路，其特征在于，所述检测电路为电压电流检测电路(12)，所述电压电流检测电路(12)的输出端与 控制电路(1)电连接；所述电压电流检测电路(12)接在超声雾化片(J)与第一振荡电路(202)之间，或者电压电流检测电路(12)接在超声雾化片(J)与第二振荡电路(302)之间。
  9. 如权利要求2所述的超声波电子烟电路，其特征在于，所述检测电路包括与超声雾化片(J)一端电连接的用于检测超声雾化片(J)振荡时发射的高频电磁波信号的第一天线(E1)、用于接收第一天线(E1)发射信号的天线接收电路(13)，天线接收电路(13)依次通过滤波放大电路(7)、滤波整形及方波转换电路(6)与控制电路(1)的输入端电连接。
  10. 如权利要求9所述的超声波电子烟电路，其特征在于，所述天线接收电路(13)包括第二天线(E2)与第一电感(L1)，滤波放大器和第二天线(E2)均与第一电感(L1)的第一端电连接，第一电感(L1)的第二端接地。
  11. 如权利要求2所述的超声波电子烟电路，其特征在于，所述检测电路为功率检测电路(4)，功率检测电路(4)的检测端与超声雾化片(J)的一端电连接，功率检测电路(4)的输出端与控制电路(1)的输入端电连接。
  12. 一种超声波电子烟，其特征在于，包括如权利要求1至11任一项所述的超声波电子烟电路。
PCT/CN2018/090229 2017-06-08 2018-06-07 一种超声波电子烟电路及该超声波电子烟 WO2018223999A1 (zh)

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