Electronic atomization device and control method

Abstract

This application provides an electronic atomization device and a control method. The electronic atomization device includes: a susceptor configured to heat an aerosol generating substrate to generate aerosols; an LC oscillator which includes an induction coil and a capacitor and is configured to guide varying current to flow through the induction coil, thus driving the susceptor to heat the aerosol generating substrate; a battery cell; and a controller configured to: control the battery cell to supply predetermined energy to the LC oscillator or the susceptor within predetermined time and detect a unique property of the aerosol generating substrate based on changes in a resonant voltage or resonant current of the LC oscillator within the predetermined time. The above electronic atomization device supplies the predetermined energy to the LC oscillator or the susceptor within the predetermined time to detect the unique property of the aerosol generating substrate, and monitors the changes in the resonant voltage or the resonant current of the LC oscillator within the predetermined time to determine the unique property of the aerosol generating substrate.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to Chinese Patent Application No. 202310986478.5, filed with China National Intellectual Property Administration on August 07, 2023 and entitled "ELECTRONIC ATOMIZATION DEVICE AND CONTROL METHOD THEREFOR", which is incorporated herein by reference in its entirety.TECHNICAL FIELD

[0002] Embodiments of this application relates to the field of electronic atomization technologies, and in particular, to an electronic atomization device and a control method.BACKGROUND

[0003] For tobacco products (such as cigarettes and cigars), tobacco is burnt during use to produce tobacco smoke. Attempts are made to replace these tobacco-burning products by making products that release compounds without burning.

[0004] An example of such products is a heating device, which releases compounds by heating rather than burning materials. For example, the materials may be tobacco or other non-tobacco products, and the non-tobacco products may or may not include nicotine. In another example, aerosol providing products exist, for example, the so-called electronic atomization devices. The devices usually contain a liquid. The liquid is heated and atomized, thereby generating inhalable aerosols. In a known electronic atomization device, a changing magnetic field is generated through an induction coil, so as to induce a susceptor to heat a liquid to generate aerosols. During working of such electronic atomization device that induces, heats, and atomizes various liquids with different flavors or atomization efficiency, a flavor, atomization efficiency, or the like of an atomized liquid cannot be determined by detecting a temperature of the susceptor.SUMMARY

[0005] An embodiment of this application provides an electronic atomization device, including: a susceptor configured to heat an aerosol generating substrate to generate aerosols; an LC oscillator including an induction coil and a capacitor, where the LC oscillator is configured to guide varying current to flow through the induction coil, thus driving the induction coil to supply energy to the susceptor to heat the aerosol generating substrate; a battery cell; and a controller configured to: control the battery cell to supply predetermined energy to the LC oscillator or the susceptor within predetermined time and detect a unique property of the aerosol generating substrate based on changes in a resonant voltage or resonant current of the LC oscillator within the predetermined time.

[0006] In some embodiments, the controller is configured to detect the unique property of the aerosol generating substrate based on a variation or a change rate of an amplitude value of the resonant voltage or resonant current of the LC oscillator within the predetermined time.

[0007] In some embodiments, the controller is configured to detect the unique property of the aerosol generating substrate when an amplitude value of the resonant voltage or resonant current of the LC oscillator exceeds a preset threshold.

[0008] In some embodiments, the electronic atomization device further includes: a shaping module configured to shape the resonant voltage or resonant current of the LC oscillator to form a shaped signal, where the controller is configured to detect the shaped signal obtained after the shaping performed by the shaping module, to obtain the changes in the resonant voltage or resonant current of the LC oscillator within the predetermined time.

[0009] In some embodiments, the shaping module at least includes: an integration unit configured to perform integral shaping on the resonant voltage or resonant current of the LC oscillator.

[0010] In some embodiments, the shaping module further includes: a first filter capacitor connected in series between the LC oscillator and the integration unit, to filter and shape the resonant voltage or resonant current of the LC oscillator and then supply the resonant voltage or resonant current to the integration unit.

[0011] In some embodiments, the controller is configured to: sample the shaped signal formed by the shaping module and obtain the changes in the resonant voltage or resonant current of the LC oscillator within the predetermined time by performing minimum value filtering on a result of the sampling.

[0012] In some embodiments, the electronic atomization device further includes: an airflow sensor configured to sense an inhalation action of a user, where the controller is configured to: control, when the airflow sensor senses user inhalation, the battery cell to supply the predetermined energy to the LC oscillator or the susceptor within the predetermined time, so as to detect the unique property of the aerosol generating substrate, and then control, based on the detected unique property of the aerosol generating substrate, the susceptor to heat the aerosol generating substrate.

[0013] Another embodiment of this application further provides an electronic atomization device, including: a susceptor configured to heat an aerosol generating substrate to generate aerosols; an LC oscillator including an induction coil and a capacitor, where the LC oscillator is configured to guide varying current to flow through the induction coil, thus driving the induction coil to supply energy to the susceptor to heat the aerosol generating substrate; a battery cell; an integration unit configured to perform integral shaping on the resonant voltage or resonant current of the LC oscillator to generate a shaped signal; and a controller configured to: control the battery cell to supply predetermined energy to the LC oscillator or the susceptor within predetermined time and detect a unique property of the aerosol generating substrate based on the shaped signal outputted by the integration unit.

[0014] Still another embodiment of this application further provides a control method for an electronic atomization device. The electronic atomization device includes: a susceptor configured to heat an aerosol generating substrate to generate aerosols; an LC oscillator including an induction coil and a capacitor, where the LC oscillator is configured to guide varying current to flow through the induction coil, thus driving the induction coil to supply energy to the susceptor to heat the aerosol generating substrate; and a battery cell, where the method includes: controlling the battery cell to supply predetermined energy to the LC oscillator or the susceptor within predetermined time, and detecting a unique property of the aerosol generating substrate based on changes in a resonant voltage or resonant current of the LC oscillator within the predetermined time.

[0015] The above electronic atomization device supplies the predetermined energy to the LC oscillator or the susceptor within the predetermined time to detect the unique property of the aerosol generating substrate, and monitors the changes in the resonant voltage or the resonant current of the LC oscillator within the predetermined time to determine the unique property of the aerosol generating substrate.BRIEF DESCRIPTION OF THE DRAWINGS

[0016] One or more embodiments are exemplarily described with reference to the corresponding figures in the accompanying drawings, and the descriptions are not to be construed as limiting the embodiments. Elements in the accompanying drawings that have same reference numerals are represented as similar elements, and unless otherwise particularly stated, the figures in the accompanying drawings are not drawn to scale. FIG. 1 is a schematic diagram of an electronic atomization device according to one embodiment; FIG. 2 is a structural block diagram of one embodiment of a circuit in FIG. 1; FIG. 3 is a schematic diagram of basic assemblies of one embodiment of the circuit in FIG. 2; FIG. 4 is a schematic diagram of supplying predetermined energy to a susceptor within predetermined time to detect changes in a resonant voltage of an LC oscillator in a liquid aerosol generating substrate process in one embodiment; FIG. 5 is a schematic diagram of sampling a voltage at a second end of an induction coil to obtain a voltage at the second end of the induction coil in a resonant voltage of an LC oscillator in one embodiment; FIG. 6 is a schematic diagram of the resonant voltage in FIG. 5 being filtered and shaped in one embodiment; FIG. 7 is a schematic diagram of a sampled signal obtained by sampling a filtered and shaped output signal in FIG. 6 and a filtering signal obtained after performing minimum value filtering on the sampled signal in one embodiment; and FIG. 8 is a schematic diagram of comparison of filtering signals when different liquid aerosol generating substrates are provided in one embodiment. DETAILED DESCRIPTION

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Apparently, the described embodiments are merely some rather than all of the embodiments of this application. It should be understood that the specific embodiments described here are only intended to explain this application and are not intended to limit this application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of this application without making creative efforts shall fall within the protection scope of this application.

[0018] It should be noted that, when an element is expressed as "being fixed to" another element, the element may be directly on the another element, or one or more intermediate elements may exist between the element and the another element. When one element is expressed as "being connected to" another element, the element may be directly connected to the another element, or one or more intermediate elements may exist between the element and the another element. The terms "vertical", "horizontal", "left", "right", and similar expressions used in this specification are for illustrative purposes only.

[0019] In addition, technical features involved in the embodiments of this application described below may be combined together if there is no conflict.

[0020] An embodiment of this application provides an electronic atomization device configured to atomize an aerosol generating substrate to generate aerosols. In some embodiments, the electronic atomization device may include two or more separate or replaceable portions that, when combined, form a complete combined usage state of the electronic atomization device and can generate aerosols in response to an operation of a user.

[0021] In some embodiments, the electronic atomization device can generate aerosols by heating a liquid aerosol generating substrate. In some embodiments, the liquid aerosol generating substrate includes at least one of propylene glycol, glycerol, and the like.

[0022] Or, in some other embodiments, the electronic atomization device can heat a solid aerosol generating substrate such that at least one component of the solid aerosol generating substrate is volatilized or released to form aerosols for inhalation. In some implementations, the solid aerosol generating substrate is preferably a solid substrate, and may include one or more of powder, particles, fragments, slivers, strips, or sheets of one or more of vanilla leaves, dried flowers, volatile aromatic herbs, tobacco leaves, homogenized tobacco, and expanded tobacco. Or, the solid substrate may include an additional tobacco or non-tobacco volatile aroma compound that is released when the substrate is heated.

[0023] FIG. 1 shows a schematic diagram of an electronic atomization device in one embodiment. In this embodiment, the electronic atomization device includes an atomizer 100 for atomizing a liquid aerosol generating substrate to generate aerosols, and a power supply mechanism 200 for supplying power to the atomizer.

[0024] Further, as shown in FIG. 1, the power supply mechanism 200 includes: a near end 2110 and a far end 2120 that face away from each other in a longitudinal direction. During use, the near end 2110 is one end configured to receive the atomizer 100.

[0025] As shown in FIG. 1, the power supply mechanism 200 further includes: a receiving cavity 270 which is disposed adjacent to the near end 2110 and extends in the longitudinal direction of the power supply mechanism 200. In addition, the receiving cavity 270 has an opening facing or located at the near end 2110 in the longitudinal direction. During use, the atomizer 100 can be received within or removed from the receiving cavity 270 through the opening.

[0026] As shown in FIG. 1, the power supply mechanism 200 further includes: a rechargeable battery cell 210 configured to output power, where the battery cell 210 is disposed close to the far end 2120; and a charging interface 240 configured to charge the rechargeable battery cell 210. The charging interface 240 is disposed between the battery cell 210 and the far end 2120.

[0027] In one embodiment, a direct current supply voltage provided by the battery cell 210 ranges from about 2.5 V to about 9.0 V, and a direct current provided by the battery cell 210 ranges from about 2.5 A to about 20 A. In one specific embodiment, a direct current supply voltage provided by the battery cell 210 ranges from 3.2 V to 4.2 V.

[0028] As shown in FIG. 1, the power supply mechanism 200 further includes: a circuit 220 which is integrated or disposed on a circuit board such as a printed circuit board (PCB) and configured to control operation of the power supply mechanism 200. Specifically, the circuit 220 controls power outputted by the battery cell 210. In FIG. 1, the circuit 220 is located between the battery cell 210 and the receiving cavity 270.

[0029] As shown in FIG. 1, the power supply mechanism 200 further includes: an airflow sensor 250, such as a microphone / micro-electromechanical system (MEMS) sensor, configured to sense an inhalation airflow flowing through the atomizer 100 when a user puffs on the atomizer 100. The circuit 220 controls the power outputted by the battery cell 210 based on a sensing result of the airflow sensor 250. In the embodiment shown in FIG. 1, the airflow sensor 250 is disposed between the battery cell 210 and the receiving cavity 270. In still some changing embodiments, the airflow sensor 250 may be assembled, fastened, or combined onto the circuit board on which the circuit 220 is disposed. Or, in still some changing embodiments, the airflow sensor 250 is supported and fixed within the power supply mechanism 200 by an independent supporting element such as a plastic bracket.

[0030] In some embodiments, the power supply mechanism 200 induces the atomizer 100 to heat and atomize the liquid aerosol generating substrate by generating a changing magnetic field that passes through the receiving cavity 270. Specifically, an induction heating element can be disposed within the atomizer 100. When received within the receiving cavity 270, the atomizer 100 can generate heat by being penetrated through by the changing magnetic field and heat the liquid aerosol generating substrate to generate aerosols.

[0031] As shown in FIG. 1, the power supply mechanism 200 further includes: an induction coil 260 disposed around the receiving cavity 270; and a circuit 220 configured to perform driving based on a predetermined frequency to generate an alternating current flowing through the induction coil 260, thus causing the induction coil 260 to generate a changing magnetic field penetrating through the receiving cavity 270. In some embodiments, a frequency of the alternating current supplied by the circuit 220 to the induction coil 260 ranges from 80 KHz to 2000 KHz. More specifically, the frequency can be within a range of about 600 KHz to 1500 KHz.

[0032] In some embodiments, the induction coil 260 is wound by a low-resistivity wire material, such as a copper wire or a silver wire. In still some other embodiments, the induction coil 260 is wound by a Litz wire. The Litz wire with a plurality of strands or bundles of wires is more advantageous for carrying alternating currents.

[0033] FIG. 1 shows a schematic diagram of an atomizer 100 in one embodiment. The atomizer 100 of this embodiment includes: a main housing 10; and a partition wall 11 extending within the main housing 10 in the longitudinal direction of the atomizer 100, where the partition wall 11 is integrally molded with the main housing 10 by, for example, a material such as a polymer and ceramic, and the partition wall 11 extends to or terminates at an air outlet 111. A liquid storage cavity 12 is defined between the partition wall 11 and the main housing 10 to store the liquid aerosol generating substrate. Furthermore, an aerosol outputting channel located inside the main housing 10 is surrounded and defined by the partition wall 11, to output aerosols to the air outlet 111 during inhalation.

[0034] The atomizer 100 further includes: an atomization assembly configured to atomize the liquid aerosol generating substrate to generate aerosols. In FIG. 1, the atomization assembly includes: a susceptor 30 configured to heat the liquid aerosol generating substrate to generate aerosols; and a liquid guiding element 20 configured to transfer the liquid aerosol generating substrate between the liquid storage cavity 12 and the susceptor 30. The liquid guiding element 20 extracts the liquid aerosol generating substrate and transfers or supplies it to the susceptor 30 such that the liquid aerosol generating substrate is heated to generate aerosols.

[0035] In the embodiment shown in FIG. 1, the liquid guiding element 20 is constructed to be located inside the partition wall 11. Furthermore, the liquid guiding element 20 is constructed as a hollow cylindrical shape extending in the longitudinal direction. In some embodiments, the liquid guiding element 20 is made of a capillary or porous material, such as sponge and cotton fibers, or made of a porous body such as porous ceramic. An outer side surface of the liquid guiding element 20 is configured as a liquid extraction surface for extracting the liquid aerosol generating substrate from the liquid storage cavity 12. In some specific embodiments, the partition wall 11 is provided with a plurality of via holes. The outer side surface of the liquid guiding element 20 extracts the liquid aerosol generating substrate inside the liquid storage cavity 12 through the via holes. An inner side surface of the liquid guiding element 20 is configured as an atomization surface. The susceptor 30 is combined to the inner side surface of the liquid guiding element 20, and heats at least part of the liquid aerosol generating substrate inside the liquid guiding element 20 to generate aerosols.

[0036] Or, in still some embodiments, the liquid guiding element 20 can be constructed in various regular or irregular shapes and is partially in fluid communication with the liquid storage cavity 12 to receive the liquid aerosol generating substrate. Or, in other changing implementations, the liquid guiding element 20 can be in more regular or irregular shapes, such as a polygonal block, a grooved shape with a groove in a surface, or an arch shape with a hollow channel inside.

[0037] Or, in still some changing implementations, the susceptor 30 may be combined onto the liquid guiding element 20 through printing, deposition, sintering, physical assembling, or the like. In some other changing implementations, the liquid guiding element 20 may have a flat or curved surface for supporting the susceptor 30. The susceptor 30 is formed on the flat or curved surface of the porous-body liquid guiding element 20 through mounting, printing, deposition, or the like.

[0038] In the embodiment shown in FIG. 1, the susceptor 30 is an induction heating element that can be penetrated through by a changing magnetic field and generate heat. The susceptor 30 is made of a susceptible metal or alloy. For example, the susceptor 30 can be made of grade-430 stainless steel (SS430), or can be made of grade-420 stainless steel (SS420) and an alloy material containing iron and nickel (such as permalloy). In addition, in some specific embodiments, the susceptor 30 has a length of 2 mm to 10 mm. The susceptor 30 has an inner diameter of 1.5 mm to 8 mm. A thickness of the partition wall of the susceptor 30 ranges from 0.05 mm to 0.2 mm. For example, in some specific embodiments, the susceptor 30 has a length of 4 mm to 8 mm. As shown in FIG. 1, the susceptor 30 is in a circumferentially closed tubular shape. The susceptor 30 is of a mesh structure and has a plurality of arrayed holes to release aerosols.

[0039] Or, in still some changing embodiments, the susceptor 30 may be constructed in a solenoid shape or more cylindrical shapes.

[0040] In the embodiment shown in FIG. 1, an extension length of the induction coil 260 is 6 mm to 15 mm. The induction coil 260 has about 6 to 12 turns. The length of the susceptor 30 is less than the length of the induction coil 260. When the atomizer 100 is received within the receiving cavity 270, the susceptor 30 is basically completely located inside the induction coil 260.

[0041] FIG. 2 shows a schematic diagram of a circuit 220 in one embodiment. In this embodiment, the circuit 220 includes: an LC oscillator 222 formed by connecting an induction coil 260 with a capacitor; and a bridge 223 connected between the LC oscillator 222 and the battery cell 210 to drive the LC oscillator 222 to oscillate, thereby generating an alternating current flowing through the induction coil 260.

[0042] FIG. 3 shows a schematic diagram of basic assemblies of a circuit 220 in one specific embodiment. The LC oscillator 222 in FIG. 3 is an LC oscillator with two symmetric bridge arms. Specifically, in FIG. 3, the LC oscillator 222 includes: a capacitor C1 and a capacitor C2 that are connected in series, where a first end of the capacitor C1 is connected to a positive electrode of the battery cell 210, and a second end is connected to a first end of the capacitor C2. A second end of the capacitor C2 is connected to a negative electrode of the battery cell 210 through grounding. The second end of the capacitor C1 and the first end of the capacitor C2 are simultaneously connected to a second end of the induction coil 260.

[0043] In FIG. 3, the bridge 223 is a half-bridge matching a symmetrical LC oscillator 222. In FIG. 3, the bridge 223, such as a half-bridge, includes a switching transistor Q1 and a switching transistor Q2 that are connected in series. In the connection of FIG. 3, a first end of the switching transistor Q1 is connected to a positive electrode of the battery cell 210, and a second end is connected to the first end of the induction coil 260. A first end of the switching transistor Q2 is connected to the first end of the induction coil 260, and a second end is connected to the negative electrode of the battery cell 210 through grounding. In addition, turning on and turning off of the switching transistor Q1 and the switching transistor Q2 are controlled by a pulse width modulation (PWM) control signal modulated by a micro control unit (MCU) controller 224. Or, in some typical changing embodiments, the bridge 223 may use a full bridge or an H-bridge including four switching transistors.

[0044] In the embodiment of FIG. 3, the MCU controller 224 drives the LC oscillator 222 to oscillate by controlling alternate turning on and turning off of the switching transistor Q1 and the switching transistor Q2, thereby generating an alternating current flowing through the induction coil 260, so that the induction coil 260 generates a changing magnetic field to induce the susceptor 30 to perform heating and generate aerosols.

[0045] Or, in still some changing embodiments, the LC oscillator 222 may be an asymmetric half-bridge LC oscillator 222 formed by connecting only one capacitor C2 in series with the induction coil 260, and only has one oscillation bridge arm formed by connecting the capacitor C2 in series with the induction coil 260.

[0046] In some embodiments, when the airflow sensor 250 senses user inhalation, the MCU controller 224 modulates a PWM control signal to alternately turn on and turn off the switching tube Q1 and the switching tube Q2, thereby driving the LC oscillator 222 to oscillate to cause the induction coil 260 to generate a changing magnetic field, and then inducing the susceptor 30 to heat the liquid aerosol generating substrate.

[0047] One embodiment of this application further provides determining a "unique property" of the liquid aerosol generating substrate by controlling supplying of predetermined energy to the LC oscillator 222 or the susceptor 30. Specifically, when the susceptor 30 heats the liquid aerosol generating substrate, energy of the susceptor 30 is absorbed by the liquid aerosol generating substrate. This can be used as a change in equivalent impedance between the induction coil 260 and the susceptor 30 in the circuit 220. Thus, when the predetermined energy is supplied to the LC oscillator 222 within predetermined time which is for example 100 ms, an amplitude value Vmax of a resonant voltage of the LC oscillator 222 is in a form of gradually decreasing in FIG. 4. When the susceptor 30 heats liquid aerosol generating substrates with different components or unique properties, the amplitude Vmax of the resonant voltage of the LC oscillator 222 decreases to varying degrees.

[0048] In this embodiment, supplying the predetermined energy to the LC oscillator 222 is controlled by controlling total turning-on time of the switching transistor Q1 and the switching transistor Q2 in the bridge 223. Specifically, based on the total turning-on time of the switching transistor Q1 and the switching transistor Q2 in the bridge 223 and an output voltage of the battery cell 210, the energy supplied to the LC oscillator 222 can be calculated and controlled to maintain at the predetermined energy level.

[0049] In this embodiment, the MCU controller 224 determines the unique property of the liquid aerosol generating substrate by supplying the predetermined energy to the LC oscillator 222 within the predetermined time which is for example 100 ms, and monitoring the resonant voltage of the LC oscillator 222 exceeding a preset threshold or monitoring a variation or a change rate of the resonant voltage within the predetermined time.

[0050] In some specific implementations, the unique property of the above liquid aerosol generating substrate may include at least one of viscosity, specific heat, a boiling point, or atomization efficiency of the liquid aerosol generating substrate.

[0051] For another example, in some specific implementations, the unique property of the above liquid aerosol generating substrate may include content of propylene glycol or vegetable glycerin with different atomization efficiencies in the liquid aerosol generating substrate.

[0052] For another example, in some specific implementations, the unique property of the above liquid aerosol generating substrate may include the most appropriate atomization power or atomization temperature of the liquid aerosol generating substrate.

[0053] For another example, in some specific implementations, the unique property of the above liquid aerosol generating substrate may include intensity of nicotine contained in the liquid aerosol generating substrate, such as content of nicotine.

[0054] In some embodiments, in the process of detecting the unique property of the liquid aerosol generating substrate, a predetermined energy value is provided to the LC oscillator 222 within the predetermined time which is for example 100 ms. Relatively high energy may be used, such as energy that is greater than energy supplied to the susceptor 30 within duration of the same predetermined time during inhalation, to enhance the amplitude value changing degree of the resonant voltage, making it easier for the MCU controller 224 to perform detection and analysis. For example, in some specific embodiments, in the inhalation process, the MCU controller 224 controls supplying of energy to the susceptor 30 at 11.6667 J / s. Thus, in the detection process, the MCU controller 224 controls supplying of predetermined energy of about 1.5 J to 3 J to the susceptor 30 within the predetermined time which is for example 100 ms, to make it easier for the MCU controller 224 to detect and analyze amplitude value changes in the resonant voltage.

[0055] In some embodiments, the predetermined time is less than 300 ms, to minimize the impact of the detection time on a normal heating power process of user inhalation.

[0056] In some specific embodiments, the predetermined energy supplied to the susceptor 30 within the predetermined time is supplied by controlling, via the MCU controller 224, power outputted by the bridge 223 to the LC oscillator 222. Specifically, the energy supplied to the susceptor 30 is related to the magnetic field generated by the induction coil 260. Further, the magnetic field generated by the induction coil 260 is determined by the power outputted by the battery cell 210 to the LC oscillator 222 through the bridge 223. Thus, during implementation, the MCU controller 224 controls the power outputted by the battery cell 210 to the LC oscillator 222 through the bridge 223 to supply the predetermined energy to the susceptor 30 within the predetermined time.

[0057] To enable the MCU controller 224 to accurately sample, analyze, and identify the changes in the resonant voltage of the LC oscillator 222, as shown in FIG. 2 and FIG. 3, the circuit 220 further includes: a shaping module 221 configured to shape the resonant voltage of the LC oscillator 222 such that the MCU controller 224 can sample and monitor the resonant voltage of the LC oscillator 222.

[0058] As shown in FIG. 3, the shaping module 221 is connected to the second end of the induction coil 260 of the LC oscillator 222. FIG. 5 shows a waveform, obtained by the shaping module 221, of a voltage at the second end of the induction coil 260. During use, the shaping module 221 is only connected to the second end of the induction coil 260, so that a waveform of the resonant voltage of the LC oscillator 222 during one half-cycle can be obtained only. Certainly, a person skilled in the art can further obtain the waveform of the resonant voltage of the LC oscillator 222 during the other half-cycle by connecting the shaping module 221 to the first end of the induction coil 260.

[0059] Specifically, as shown in FIG. 3, the shaping module 221 includes a filter and voltage-divider unit 2211 and an integration unit 2212. Where: The filter and voltage-divider unit 2211 is connected to the second end of the induction coil 260 to perform filtering and voltage division shaping on the resonant voltage of the LC oscillator 222. Specifically, the filter and voltage-divider unit 2211 includes a filter capacitor C3, a voltage-dividing resistor R1, and a voltage-dividing resistor R2 that are connected in series, and a parallel-connected filter capacitor C4. In FIG. 3, the resonant voltage of the LC oscillator 222 is filtered by the series-connected filter capacitor C3, is then divided, compressed, and amplified by the voltage-dividing resistor R1 and the voltage-dividing resistor R2, and is outputted after being filtered by the filter capacitor C4 before being output. The voltage division of the voltage-dividing resistor R1 and the voltage-dividing resistor R2 is mainly to reduce an original voltage value of about 30 V to 50 V to a range of about 0.05 V to 5 V, to prevent a phenomenon that a signal cannot be sampled or an input / output (I / O) interface is burned out if the signal strength exceeds a sampling range of a conventional I / O interface.

[0060] The integration unit 2212 is configured to perform integral shaping on an output signal of the filter and voltage-divider unit 2211. As shown in FIG. 3, the integration unit 2212 is a commonly used passive RC integration circuit, including a capacitor C5, a resistor R3, and a resistor R4. In still some changing embodiments, the integration unit 2212 can use a commonly used active integration circuit or an integral operation chip. A voltage shaped signal Vout outputted after the shaping by the integration unit 2212 is a time integral of the output voltage of the filter and voltage-divider unit 2211.

[0061] In FIG. 3, to prevent the voltage of the integration unit 2212 from being outputted in reverse to the filter and voltage-divider unit 2211, a diode D1 is also disposed between an output end of the filter and voltage-divider unit 2211 and an input end of the integration unit 2212 to provide unidirectional outputting.

[0062] FIG. 6 shows a schematic diagram of a voltage shaped signal Vout that is outputted after the shaping module 221 filters and shapes the half-cycle voltage waveform, obtained by the second end of the induction coil 260, of the resonant voltage of the LC oscillator 222 in FIG. 5. As shown in FIG. 6, after the shaping module 221 performs filtering, voltage division, and integral shaping, the voltage shaped signal Vout has a voltage waveform in a down trend. Then, the MCU controller 224 can monitor or determine a variation or a change rate of the amplitude value of the resonant voltage of the LC oscillator 222 by sampling the voltage shaped signal Vout outputted by the shaping module 221.

[0063] A signal value of the voltage shaped signal Vout of the resonant voltage that is obtained after the shaping performed by the shaping module 221 is about between 0.05 V and 5 V. This is advantageous for sampling and obtaining by the I / O interface of the MCU controller 224. Compared with direct sampling on the original resonant voltage up to 30 V to 50 V through the I / O interface of the MCU controller 224, sampling on the signal value of the voltage shaped signal Vout obtained after the shaping will not burn out the I / O interface or the MCU controller 224 due to an excessively high voltage. Meanwhile, the voltage shaped signal Vout of the resonant voltage obtained after the shaping is more suitable for sampling analysis and comparative calculation.

[0064] For example, FIG. 7 shows a schematic diagram of sampling of a sampled signal V displayed on an oscilloscope after connecting sampled signals obtained by sampling performed by the MCU controller 224 on the voltage shaped signal Vout at a sampling interval of 0.25 ms. From the sampling of the sampled signal V displayed on the oscilloscope in FIG. 7, it can be seen that the sampled signals obtained by sampling performed by the MCU controller 224 on the voltage shaped signal Vout at the sampling interval of 0.25 ms are discretely fluctuating.

[0065] In this embodiment, to eliminate a sampling error and background signal noise during the sampling of the MCU controller 224, based on a gradually decreasing waveform of the voltage shaped signal Vout and a requirement for analyzing an amplitude decrease, the MCU controller 224 is configured to perform minimum value filtering on the sampling of the sampled signal V. Further, FIG. 7 shows a schematic diagram of filtering of a filtered signal V generated after the minimum value filtering is performed. The filtering of the filtered signal V generated after the minimum value filtering is performed can characterize a waveform representing the amplitude decrease of the resonant voltage.

[0066] Or, in some alternative embodiments, the MCU controller 224 may use mean filtering, Kalman filtering, particle filtering, or non-recursive FR filtering to filter the sampling of the sampled signal V to obtain filtering of a filtered signal V with less signal hopping and higher stability than the sampling of the sampled signal V.

[0067] In this embodiment, when the susceptor 30 atomizes liquid aerosol generating substrates with different unique properties such as atomization efficiencies, atomization temperatures, viscosities, specific heat, and the like, it is reflected in the circuit 220 as having different equivalent impedances. Correspondingly, the amplitude decrease of the resonant voltage of the LC oscillator 222 monitored within the predetermined time varies. The variation in the amplitude decrease of the resonant voltage is also evident in the filtering of the filtered signal V. For example, FIG. 8 shows a schematic diagram of comparison of filtering of filtered signals V of resonant voltages obtained by monitoring, by the MCU controller 224, the resonant voltages of the LC oscillator 222 when the liquid storage cavity 12 is filled with two different liquid aerosol generating substrates.

[0068] In FIG. 8, the liquid aerosol generating substrate corresponding to curve S1 contains about 50% of propylene glycol and 50% of vegetable glycerin. The liquid aerosol generating substrate corresponding to curve S2 contains about 40% of propylene glycol and 60% of vegetable glycerin, so that the liquid aerosol generating substrate has higher viscosity and higher specific heat capacity. As can be seen from the comparison of the filtering of the filtered signals V of the resonant voltages shown in FIG. 8, within the same predetermined time t1, curve S2 exhibits a greater decrease in the amplitude of the resonant voltage. For example, in FIG. 8, a voltage value of curve S1 decreases from V0 to V1, while a voltage value of curve S2 decreases from V0 to V2 which is less than V1. As shown in FIG. 8, by analyzing the filtering of the filtered signal V of the filtered resonant voltage, it is easier and more accurate for the MCU controller 224 to sample, analyze, and identify the unique property of the liquid aerosol generating substrate.

[0069] Based on different decrease degrees of the resonant voltage of the LC oscillator 222 in the detection process due to the liquid aerosol generating substrates with different unique properties shown in FIG. 8, the MCU controller 224 is configured to determine the unique property of the liquid aerosol generating substrate on the susceptor 30 by monitoring a voltage variation or a change rate based on the filtering of the filtered signal V of the resonant voltage of the LC oscillator 222. In addition, the MCU controller 224 is configured to control, during the determination of the unique property of the liquid aerosol generating substrate, driving on the induction coil 260 to generate a magnetic field at suitable power, to atomize the liquid aerosol generating substrate at a suitable power.

[0070] Or, in still some embodiments, the MCU controller 224 is configured to determine the unique property of the liquid aerosol generating substrate on the susceptor 30 by monitoring a variation or a change rate of the amplitude value of the resonant voltage of the LC oscillator 222 within the predetermined time.

[0071] Or, in still some embodiments, the MCU controller 224 is configured to determine the unique property of the liquid aerosol generating substrate by monitoring that a signal value voltage of the filtering of the filtered signal V of the resonant voltage of the LC oscillator 222 exceeds a preset threshold.

[0072] Or, in still some embodiments, the MCU controller 224 is configured to determine the unique property of the liquid aerosol generating substrate by monitor that a decrease in the amplitude value of the resonant voltage of the LC oscillator 222 exceeds a preset threshold.

[0073] Or, in still some embodiments, the MCU controller 224 is configured to determine the unique property of the liquid aerosol generating substrate on the susceptor 30 by monitoring a decrease degree or a variation or a change rate or the like of an amplitude value or a minimum value of the voltage shaped signal Vout of the amplitude value of the resonant voltage of the LC oscillator 222.

[0074] Or, in still some embodiments, a resonant current of the LC oscillator 222 is related to the resonant voltage. Specifically based on the electrical knowledge, the resonant current and the resonant voltage of the LC oscillator 222 have a phase difference of 1 / 4 cycle and have the same sinusoidal waveform. Thus, in still some embodiments, the MCU controller 224 is configured to determine the unique property of the liquid aerosol generating substrate on the susceptor 30 by monitoring and analyzing changes in the resonant current of the LC oscillator 222 through shaping and sampling.

[0075] In an optional embodiment, the MCU controller 224 is configured to control, when the airflow sensor 250 senses user inhalation, supplying of the predetermined energy to the LC oscillator 222 to determine the "unique property" of the liquid aerosol generating substrate. For example, in one specific embodiment, the airflow sensor 250 senses that duration of an inhalation action of a user is 3 s, and the MCU controller 224 controls supplying of the predetermined energy to the LC oscillator 222 within the initial 0.1 s serving as the predetermined time, to determine the "unique property" of the liquid aerosol generating substrate. Then, within the remaining 2.9 s, based on the determined unique property of the liquid aerosol generating substrate, the MCU controller 224 controls atomization on the liquid aerosol generating substrate at appropriate power.

[0076] In some optional embodiments, the MCU controller 224 is configured to control, when the user does not perform an inhalation action, supplying of the predetermined energy to the LC oscillator 222, to determine the "unique property" of the liquid aerosol generating substrate, for serving as an output power reference during subsequent inhalation to control atomization on the liquid aerosol generating substrate at appropriate power.

[0077] Or, in still some optional embodiments, the MCU controller 224 is configured to control, when the user replaces the atomizer 100 inside the receiving cavity 270 or when an atomizer 100 is placed into the receiving cavity 270 again, supplying of the predetermined energy to the LC oscillator 222, to determine the "unique property" of the liquid aerosol generating substrate, for serving as an output power reference during subsequent inhalation to control atomization on the liquid aerosol generating substrate at appropriate power.

[0078] The above describes only the embodiments of this application and does not limit the patent scope of this application. Any equivalent structure or equivalent process transformation made using the specification and contents of accompanying drawings of this application, or directly or indirectly applied to other related technical fields, are equally included in the scope of patent protection of this application.

[0079] It should be finally noted that: The foregoing various embodiments are merely intended to describe the technical solutions of this application, but not for limiting this application. Under the concept of this application, the technical features in the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order. There are many other variations of the different aspects of this application as described above, which are not provided in detail for the sake of simplicity. Although this application is described in detail with reference to the foregoing embodiments, persons of ordinary skill in the art should understand that they may still make modifications to the technical solutions described in the foregoing embodiments or make equivalent replacements to partial technical features thereof. However, these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the various embodiments of this application.

Examples

Embodiment Construction

[0017]To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Apparently, the described embodiments are merely some rather than all of the embodiments of this application. It should be understood that the specific embodiments described here are only intended to explain this application and are not intended to limit this application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of this application without making creative efforts shall fall within the protection scope of this application.

[0018]It should be noted that, when an element is expressed as "being fixed to" another element, the element may be directly on the another element, or one or more intermediate elements may exist between the elem...

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to Chinese Patent Application No. 202310986478.5, filed with China National Intellectual Property Administration on August 07, 2023 and entitled "ELECTRONIC ATOMIZATION DEVICE AND CONTROL METHOD THEREFOR", which is incorporated herein by reference in its entirety.TECHNICAL FIELD

[0002] Embodiments of this application relates to the field of electronic atomization technologies, and in particular, to an electronic atomization device and a control method.BACKGROUND

[0003] For tobacco products (such as cigarettes and cigars), tobacco is burnt during use to produce tobacco smoke. Attempts are made to replace these tobacco-burning products by making products that release compounds without burning.

[0004] An example of such products is a heating device, which releases compounds by heating rather than burning materials. For example, the materials may be tobacco or other non-tobacco products, and the non-tobacco products may or may not include nicotine. In another example, aerosol providing products exist, for example, the so-called electronic atomization devices. The devices usually contain a liquid. The liquid is heated and atomized, thereby generating inhalable aerosols. In a known electronic atomization device, a changing magnetic field is generated through an induction coil, so as to induce a susceptor to heat a liquid to generate aerosols. During working of such electronic atomization device that induces, heats, and atomizes various liquids with different flavors or atomization efficiency, a flavor, atomization efficiency, or the like of an atomized liquid cannot be determined by detecting a temperature of the susceptor.SUMMARY

[0005] An embodiment of this application provides an electronic atomization device, including: a susceptor configured to heat an aerosol generating substrate to generate aerosols; an LC oscillator including an induction coil and a capacitor, where the LC oscillator is configured to guide varying current to flow through the induction coil, thus driving the induction coil to supply energy to the susceptor to heat the aerosol generating substrate; a battery cell; and a controller configured to: control the battery cell to supply predetermined energy to the LC oscillator or the susceptor within predetermined time and detect a unique property of the aerosol generating substrate based on changes in a resonant voltage or resonant current of the LC oscillator within the predetermined time.

[0006] In some embodiments, the controller is configured to detect the unique property of the aerosol generating substrate based on a variation or a change rate of an amplitude value of the resonant voltage or resonant current of the LC oscillator within the predetermined time.

[0007] In some embodiments, the controller is configured to detect the unique property of the aerosol generating substrate when an amplitude value of the resonant voltage or resonant current of the LC oscillator exceeds a preset threshold.

[0008] In some embodiments, the electronic atomization device further includes: a shaping module configured to shape the resonant voltage or resonant current of the LC oscillator to form a shaped signal, where the controller is configured to detect the shaped signal obtained after the shaping performed by the shaping module, to obtain the changes in the resonant voltage or resonant current of the LC oscillator within the predetermined time.

[0009] In some embodiments, the shaping module at least includes: an integration unit configured to perform integral shaping on the resonant voltage or resonant current of the LC oscillator.

[0010] In some embodiments, the shaping module further includes: a first filter capacitor connected in series between the LC oscillator and the integration unit, to filter and shape the resonant voltage or resonant current of the LC oscillator and then supply the resonant voltage or resonant current to the integration unit.

[0011] In some embodiments, the controller is configured to: sample the shaped signal formed by the shaping module and obtain the changes in the resonant voltage or resonant current of the LC oscillator within the predetermined time by performing minimum value filtering on a result of the sampling.

[0012] In some embodiments, the electronic atomization device further includes: an airflow sensor configured to sense an inhalation action of a user, where the controller is configured to: control, when the airflow sensor senses user inhalation, the battery cell to supply the predetermined energy to the LC oscillator or the susceptor within the predetermined time, so as to detect the unique property of the aerosol generating substrate, and then control, based on the detected unique property of the aerosol generating substrate, the susceptor to heat the aerosol generating substrate.

[0013] Another embodiment of this application further provides an electronic atomization device, including: a susceptor configured to heat an aerosol generating substrate to generate aerosols; an LC oscillator including an induction coil and a capacitor, where the LC oscillator is configured to guide varying current to flow through the induction coil, thus driving the induction coil to supply energy to the susceptor to heat the aerosol generating substrate; a battery cell; an integration unit configured to perform integral shaping on the resonant voltage or resonant current of the LC oscillator to generate a shaped signal; and a controller configured to: control the battery cell to supply predetermined energy to the LC oscillator or the susceptor within predetermined time and detect a unique property of the aerosol generating substrate based on the shaped signal outputted by the integration unit.

[0014] Still another embodiment of this application further provides a control method for an electronic atomization device. The electronic atomization device includes: a susceptor configured to heat an aerosol generating substrate to generate aerosols; an LC oscillator including an induction coil and a capacitor, where the LC oscillator is configured to guide varying current to flow through the induction coil, thus driving the induction coil to supply energy to the susceptor to heat the aerosol generating substrate; and a battery cell, where the method includes: controlling the battery cell to supply predetermined energy to the LC oscillator or the susceptor within predetermined time, and detecting a unique property of the aerosol generating substrate based on changes in a resonant voltage or resonant current of the LC oscillator within the predetermined time.

[0015] The above electronic atomization device supplies the predetermined energy to the LC oscillator or the susceptor within the predetermined time to detect the unique property of the aerosol generating substrate, and monitors the changes in the resonant voltage or the resonant current of the LC oscillator within the predetermined time to determine the unique property of the aerosol generating substrate.BRIEF DESCRIPTION OF THE DRAWINGS

[0016] One or more embodiments are exemplarily described with reference to the corresponding figures in the accompanying drawings, and the descriptions are not to be construed as limiting the embodiments. Elements in the accompanying drawings that have same reference numerals are represented as similar elements, and unless otherwise particularly stated, the figures in the accompanying drawings are not drawn to scale. FIG. 1 is a schematic diagram of an electronic atomization device according to one embodiment; FIG. 2 is a structural block diagram of one embodiment of a circuit in FIG. 1; FIG. 3 is a schematic diagram of basic assemblies of one embodiment of the circuit in FIG. 2; FIG. 4 is a schematic diagram of supplying predetermined energy to a susceptor within predetermined time to detect changes in a resonant voltage of an LC oscillator in a liquid aerosol generating substrate process in one embodiment; FIG. 5 is a schematic diagram of sampling a voltage at a second end of an induction coil to obtain a voltage at the second end of the induction coil in a resonant voltage of an LC oscillator in one embodiment; FIG. 6 is a schematic diagram of the resonant voltage in FIG. 5 being filtered and shaped in one embodiment; FIG. 7 is a schematic diagram of a sampled signal obtained by sampling a filtered and shaped output signal in FIG. 6 and a filtering signal obtained after performing minimum value filtering on the sampled signal in one embodiment; and FIG. 8 is a schematic diagram of comparison of filtering signals when different liquid aerosol generating substrates are provided in one embodiment. DETAILED DESCRIPTION

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Apparently, the described embodiments are merely some rather than all of the embodiments of this application. It should be understood that the specific embodiments described here are only intended to explain this application and are not intended to limit this application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of this application without making creative efforts shall fall within the protection scope of this application.

[0018] It should be noted that, when an element is expressed as "being fixed to" another element, the element may be directly on the another element, or one or more intermediate elements may exist between the element and the another element. When one element is expressed as "being connected to" another element, the element may be directly connected to the another element, or one or more intermediate elements may exist between the element and the another element. The terms "vertical", "horizontal", "left", "right", and similar expressions used in this specification are for illustrative purposes only.

[0019] In addition, technical features involved in the embodiments of this application described below may be combined together if there is no conflict.

[0020] An embodiment of this application provides an electronic atomization device configured to atomize an aerosol generating substrate to generate aerosols. In some embodiments, the electronic atomization device may include two or more separate or replaceable portions that, when combined, form a complete combined usage state of the electronic atomization device and can generate aerosols in response to an operation of a user.

[0021] In some embodiments, the electronic atomization device can generate aerosols by heating a liquid aerosol generating substrate. In some embodiments, the liquid aerosol generating substrate includes at least one of propylene glycol, glycerol, and the like.

[0022] Or, in some other embodiments, the electronic atomization device can heat a solid aerosol generating substrate such that at least one component of the solid aerosol generating substrate is volatilized or released to form aerosols for inhalation. In some implementations, the solid aerosol generating substrate is preferably a solid substrate, and may include one or more of powder, particles, fragments, slivers, strips, or sheets of one or more of vanilla leaves, dried flowers, volatile aromatic herbs, tobacco leaves, homogenized tobacco, and expanded tobacco. Or, the solid substrate may include an additional tobacco or non-tobacco volatile aroma compound that is released when the substrate is heated.

[0023] FIG. 1 shows a schematic diagram of an electronic atomization device in one embodiment. In this embodiment, the electronic atomization device includes an atomizer 100 for atomizing a liquid aerosol generating substrate to generate aerosols, and a power supply mechanism 200 for supplying power to the atomizer.

[0024] Further, as shown in FIG. 1, the power supply mechanism 200 includes: a near end 2110 and a far end 2120 that face away from each other in a longitudinal direction. During use, the near end 2110 is one end configured to receive the atomizer 100.

[0025] As shown in FIG. 1, the power supply mechanism 200 further includes: a receiving cavity 270 which is disposed adjacent to the near end 2110 and extends in the longitudinal direction of the power supply mechanism 200. In addition, the receiving cavity 270 has an opening facing or located at the near end 2110 in the longitudinal direction. During use, the atomizer 100 can be received within or removed from the receiving cavity 270 through the opening.

[0026] As shown in FIG. 1, the power supply mechanism 200 further includes: a rechargeable battery cell 210 configured to output power, where the battery cell 210 is disposed close to the far end 2120; and a charging interface 240 configured to charge the rechargeable battery cell 210. The charging interface 240 is disposed between the battery cell 210 and the far end 2120.

[0027] In one embodiment, a direct current supply voltage provided by the battery cell 210 ranges from about 2.5 V to about 9.0 V, and a direct current provided by the battery cell 210 ranges from about 2.5 A to about 20 A. In one specific embodiment, a direct current supply voltage provided by the battery cell 210 ranges from 3.2 V to 4.2 V.

[0028] As shown in FIG. 1, the power supply mechanism 200 further includes: a circuit 220 which is integrated or disposed on a circuit board such as a printed circuit board (PCB) and configured to control operation of the power supply mechanism 200. Specifically, the circuit 220 controls power outputted by the battery cell 210. In FIG. 1, the circuit 220 is located between the battery cell 210 and the receiving cavity 270.

[0029] As shown in FIG. 1, the power supply mechanism 200 further includes: an airflow sensor 250, such as a microphone / micro-electromechanical system (MEMS) sensor, configured to sense an inhalation airflow flowing through the atomizer 100 when a user puffs on the atomizer 100. The circuit 220 controls the power outputted by the battery cell 210 based on a sensing result of the airflow sensor 250. In the embodiment shown in FIG. 1, the airflow sensor 250 is disposed between the battery cell 210 and the receiving cavity 270. In still some changing embodiments, the airflow sensor 250 may be assembled, fastened, or combined onto the circuit board on which the circuit 220 is disposed. Or, in still some changing embodiments, the airflow sensor 250 is supported and fixed within the power supply mechanism 200 by an independent supporting element such as a plastic bracket.

[0030] In some embodiments, the power supply mechanism 200 induces the atomizer 100 to heat and atomize the liquid aerosol generating substrate by generating a changing magnetic field that passes through the receiving cavity 270. Specifically, an induction heating element can be disposed within the atomizer 100. When received within the receiving cavity 270, the atomizer 100 can generate heat by being penetrated through by the changing magnetic field and heat the liquid aerosol generating substrate to generate aerosols.

[0031] As shown in FIG. 1, the power supply mechanism 200 further includes: an induction coil 260 disposed around the receiving cavity 270; and a circuit 220 configured to perform driving based on a predetermined frequency to generate an alternating current flowing through the induction coil 260, thus causing the induction coil 260 to generate a changing magnetic field penetrating through the receiving cavity 270. In some embodiments, a frequency of the alternating current supplied by the circuit 220 to the induction coil 260 ranges from 80 KHz to 2000 KHz. More specifically, the frequency can be within a range of about 600 KHz to 1500 KHz.

[0032] In some embodiments, the induction coil 260 is wound by a low-resistivity wire material, such as a copper wire or a silver wire. In still some other embodiments, the induction coil 260 is wound by a Litz wire. The Litz wire with a plurality of strands or bundles of wires is more advantageous for carrying alternating currents.

[0033] FIG. 1 shows a schematic diagram of an atomizer 100 in one embodiment. The atomizer 100 of this embodiment includes: a main housing 10; and a partition wall 11 extending within the main housing 10 in the longitudinal direction of the atomizer 100, where the partition wall 11 is integrally molded with the main housing 10 by, for example, a material such as a polymer and ceramic, and the partition wall 11 extends to or terminates at an air outlet 111. A liquid storage cavity 12 is defined between the partition wall 11 and the main housing 10 to store the liquid aerosol generating substrate. Furthermore, an aerosol outputting channel located inside the main housing 10 is surrounded and defined by the partition wall 11, to output aerosols to the air outlet 111 during inhalation.

[0034] The atomizer 100 further includes: an atomization assembly configured to atomize the liquid aerosol generating substrate to generate aerosols. In FIG. 1, the atomization assembly includes: a susceptor 30 configured to heat the liquid aerosol generating substrate to generate aerosols; and a liquid guiding element 20 configured to transfer the liquid aerosol generating substrate between the liquid storage cavity 12 and the susceptor 30. The liquid guiding element 20 extracts the liquid aerosol generating substrate and transfers or supplies it to the susceptor 30 such that the liquid aerosol generating substrate is heated to generate aerosols.

[0035] In the embodiment shown in FIG. 1, the liquid guiding element 20 is constructed to be located inside the partition wall 11. Furthermore, the liquid guiding element 20 is constructed as a hollow cylindrical shape extending in the longitudinal direction. In some embodiments, the liquid guiding element 20 is made of a capillary or porous material, such as sponge and cotton fibers, or made of a porous body such as porous ceramic. An outer side surface of the liquid guiding element 20 is configured as a liquid extraction surface for extracting the liquid aerosol generating substrate from the liquid storage cavity 12. In some specific embodiments, the partition wall 11 is provided with a plurality of via holes. The outer side surface of the liquid guiding element 20 extracts the liquid aerosol generating substrate inside the liquid storage cavity 12 through the via holes. An inner side surface of the liquid guiding element 20 is configured as an atomization surface. The susceptor 30 is combined to the inner side surface of the liquid guiding element 20, and heats at least part of the liquid aerosol generating substrate inside the liquid guiding element 20 to generate aerosols.

[0036] Or, in still some embodiments, the liquid guiding element 20 can be constructed in various regular or irregular shapes and is partially in fluid communication with the liquid storage cavity 12 to receive the liquid aerosol generating substrate. Or, in other changing implementations, the liquid guiding element 20 can be in more regular or irregular shapes, such as a polygonal block, a grooved shape with a groove in a surface, or an arch shape with a hollow channel inside.

[0037] Or, in still some changing implementations, the susceptor 30 may be combined onto the liquid guiding element 20 through printing, deposition, sintering, physical assembling, or the like. In some other changing implementations, the liquid guiding element 20 may have a flat or curved surface for supporting the susceptor 30. The susceptor 30 is formed on the flat or curved surface of the porous-body liquid guiding element 20 through mounting, printing, deposition, or the like.

[0038] In the embodiment shown in FIG. 1, the susceptor 30 is an induction heating element that can be penetrated through by a changing magnetic field and generate heat. The susceptor 30 is made of a susceptible metal or alloy. For example, the susceptor 30 can be made of grade-430 stainless steel (SS430), or can be made of grade-420 stainless steel (SS420) and an alloy material containing iron and nickel (such as permalloy). In addition, in some specific embodiments, the susceptor 30 has a length of 2 mm to 10 mm. The susceptor 30 has an inner diameter of 1.5 mm to 8 mm. A thickness of the partition wall of the susceptor 30 ranges from 0.05 mm to 0.2 mm. For example, in some specific embodiments, the susceptor 30 has a length of 4 mm to 8 mm. As shown in FIG. 1, the susceptor 30 is in a circumferentially closed tubular shape. The susceptor 30 is of a mesh structure and has a plurality of arrayed holes to release aerosols.

[0039] Or, in still some changing embodiments, the susceptor 30 may be constructed in a solenoid shape or more cylindrical shapes.

[0040] In the embodiment shown in FIG. 1, an extension length of the induction coil 260 is 6 mm to 15 mm. The induction coil 260 has about 6 to 12 turns. The length of the susceptor 30 is less than the length of the induction coil 260. When the atomizer 100 is received within the receiving cavity 270, the susceptor 30 is basically completely located inside the induction coil 260.

[0041] FIG. 2 shows a schematic diagram of a circuit 220 in one embodiment. In this embodiment, the circuit 220 includes: an LC oscillator 222 formed by connecting an induction coil 260 with a capacitor; and a bridge 223 connected between the LC oscillator 222 and the battery cell 210 to drive the LC oscillator 222 to oscillate, thereby generating an alternating current flowing through the induction coil 260.

[0042] FIG. 3 shows a schematic diagram of basic assemblies of a circuit 220 in one specific embodiment. The LC oscillator 222 in FIG. 3 is an LC oscillator with two symmetric bridge arms. Specifically, in FIG. 3, the LC oscillator 222 includes: a capacitor C1 and a capacitor C2 that are connected in series, where a first end of the capacitor C1 is connected to a positive electrode of the battery cell 210, and a second end is connected to a first end of the capacitor C2. A second end of the capacitor C2 is connected to a negative electrode of the battery cell 210 through grounding. The second end of the capacitor C1 and the first end of the capacitor C2 are simultaneously connected to a second end of the induction coil 260.

[0043] In FIG. 3, the bridge 223 is a half-bridge matching a symmetrical LC oscillator 222. In FIG. 3, the bridge 223, such as a half-bridge, includes a switching transistor Q1 and a switching transistor Q2 that are connected in series. In the connection of FIG. 3, a first end of the switching transistor Q1 is connected to a positive electrode of the battery cell 210, and a second end is connected to the first end of the induction coil 260. A first end of the switching transistor Q2 is connected to the first end of the induction coil 260, and a second end is connected to the negative electrode of the battery cell 210 through grounding. In addition, turning on and turning off of the switching transistor Q1 and the switching transistor Q2 are controlled by a pulse width modulation (PWM) control signal modulated by a micro control unit (MCU) controller 224. Or, in some typical changing embodiments, the bridge 223 may use a full bridge or an H-bridge including four switching transistors.

[0044] In the embodiment of FIG. 3, the MCU controller 224 drives the LC oscillator 222 to oscillate by controlling alternate turning on and turning off of the switching transistor Q1 and the switching transistor Q2, thereby generating an alternating current flowing through the induction coil 260, so that the induction coil 260 generates a changing magnetic field to induce the susceptor 30 to perform heating and generate aerosols.

[0045] Or, in still some changing embodiments, the LC oscillator 222 may be an asymmetric half-bridge LC oscillator 222 formed by connecting only one capacitor C2 in series with the induction coil 260, and only has one oscillation bridge arm formed by connecting the capacitor C2 in series with the induction coil 260.

[0046] In some embodiments, when the airflow sensor 250 senses user inhalation, the MCU controller 224 modulates a PWM control signal to alternately turn on and turn off the switching tube Q1 and the switching tube Q2, thereby driving the LC oscillator 222 to oscillate to cause the induction coil 260 to generate a changing magnetic field, and then inducing the susceptor 30 to heat the liquid aerosol generating substrate.

[0047] One embodiment of this application further provides determining a "unique property" of the liquid aerosol generating substrate by controlling supplying of predetermined energy to the LC oscillator 222 or the susceptor 30. Specifically, when the susceptor 30 heats the liquid aerosol generating substrate, energy of the susceptor 30 is absorbed by the liquid aerosol generating substrate. This can be used as a change in equivalent impedance between the induction coil 260 and the susceptor 30 in the circuit 220. Thus, when the predetermined energy is supplied to the LC oscillator 222 within predetermined time which is for example 100 ms, an amplitude value Vmax of a resonant voltage of the LC oscillator 222 is in a form of gradually decreasing in FIG. 4. When the susceptor 30 heats liquid aerosol generating substrates with different components or unique properties, the amplitude Vmax of the resonant voltage of the LC oscillator 222 decreases to varying degrees.

[0048] In this embodiment, supplying the predetermined energy to the LC oscillator 222 is controlled by controlling total turning-on time of the switching transistor Q1 and the switching transistor Q2 in the bridge 223. Specifically, based on the total turning-on time of the switching transistor Q1 and the switching transistor Q2 in the bridge 223 and an output voltage of the battery cell 210, the energy supplied to the LC oscillator 222 can be calculated and controlled to maintain at the predetermined energy level.

[0049] In this embodiment, the MCU controller 224 determines the unique property of the liquid aerosol generating substrate by supplying the predetermined energy to the LC oscillator 222 within the predetermined time which is for example 100 ms, and monitoring the resonant voltage of the LC oscillator 222 exceeding a preset threshold or monitoring a variation or a change rate of the resonant voltage within the predetermined time.

[0050] In some specific implementations, the unique property of the above liquid aerosol generating substrate may include at least one of viscosity, specific heat, a boiling point, or atomization efficiency of the liquid aerosol generating substrate.

[0051] For another example, in some specific implementations, the unique property of the above liquid aerosol generating substrate may include content of propylene glycol or vegetable glycerin with different atomization efficiencies in the liquid aerosol generating substrate.

[0052] For another example, in some specific implementations, the unique property of the above liquid aerosol generating substrate may include the most appropriate atomization power or atomization temperature of the liquid aerosol generating substrate.

[0053] For another example, in some specific implementations, the unique property of the above liquid aerosol generating substrate may include intensity of nicotine contained in the liquid aerosol generating substrate, such as content of nicotine.

[0054] In some embodiments, in the process of detecting the unique property of the liquid aerosol generating substrate, a predetermined energy value is provided to the LC oscillator 222 within the predetermined time which is for example 100 ms. Relatively high energy may be used, such as energy that is greater than energy supplied to the susceptor 30 within duration of the same predetermined time during inhalation, to enhance the amplitude value changing degree of the resonant voltage, making it easier for the MCU controller 224 to perform detection and analysis. For example, in some specific embodiments, in the inhalation process, the MCU controller 224 controls supplying of energy to the susceptor 30 at 11.6667 J / s. Thus, in the detection process, the MCU controller 224 controls supplying of predetermined energy of about 1.5 J to 3 J to the susceptor 30 within the predetermined time which is for example 100 ms, to make it easier for the MCU controller 224 to detect and analyze amplitude value changes in the resonant voltage.

[0055] In some embodiments, the predetermined time is less than 300 ms, to minimize the impact of the detection time on a normal heating power process of user inhalation.

[0056] In some specific embodiments, the predetermined energy supplied to the susceptor 30 within the predetermined time is supplied by controlling, via the MCU controller 224, power outputted by the bridge 223 to the LC oscillator 222. Specifically, the energy supplied to the susceptor 30 is related to the magnetic field generated by the induction coil 260. Further, the magnetic field generated by the induction coil 260 is determined by the power outputted by the battery cell 210 to the LC oscillator 222 through the bridge 223. Thus, during implementation, the MCU controller 224 controls the power outputted by the battery cell 210 to the LC oscillator 222 through the bridge 223 to supply the predetermined energy to the susceptor 30 within the predetermined time.

[0057] To enable the MCU controller 224 to accurately sample, analyze, and identify the changes in the resonant voltage of the LC oscillator 222, as shown in FIG. 2 and FIG. 3, the circuit 220 further includes: a shaping module 221 configured to shape the resonant voltage of the LC oscillator 222 such that the MCU controller 224 can sample and monitor the resonant voltage of the LC oscillator 222.

[0058] As shown in FIG. 3, the shaping module 221 is connected to the second end of the induction coil 260 of the LC oscillator 222. FIG. 5 shows a waveform, obtained by the shaping module 221, of a voltage at the second end of the induction coil 260. During use, the shaping module 221 is only connected to the second end of the induction coil 260, so that a waveform of the resonant voltage of the LC oscillator 222 during one half-cycle can be obtained only. Certainly, a person skilled in the art can further obtain the waveform of the resonant voltage of the LC oscillator 222 during the other half-cycle by connecting the shaping module 221 to the first end of the induction coil 260.

[0059] Specifically, as shown in FIG. 3, the shaping module 221 includes a filter and voltage-divider unit 2211 and an integration unit 2212. Where: The filter and voltage-divider unit 2211 is connected to the second end of the induction coil 260 to perform filtering and voltage division shaping on the resonant voltage of the LC oscillator 222. Specifically, the filter and voltage-divider unit 2211 includes a filter capacitor C3, a voltage-dividing resistor R1, and a voltage-dividing resistor R2 that are connected in series, and a parallel-connected filter capacitor C4. In FIG. 3, the resonant voltage of the LC oscillator 222 is filtered by the series-connected filter capacitor C3, is then divided, compressed, and amplified by the voltage-dividing resistor R1 and the voltage-dividing resistor R2, and is outputted after being filtered by the filter capacitor C4 before being output. The voltage division of the voltage-dividing resistor R1 and the voltage-dividing resistor R2 is mainly to reduce an original voltage value of about 30 V to 50 V to a range of about 0.05 V to 5 V, to prevent a phenomenon that a signal cannot be sampled or an input / output (I / O) interface is burned out if the signal strength exceeds a sampling range of a conventional I / O interface.

[0060] The integration unit 2212 is configured to perform integral shaping on an output signal of the filter and voltage-divider unit 2211. As shown in FIG. 3, the integration unit 2212 is a commonly used passive RC integration circuit, including a capacitor C5, a resistor R3, and a resistor R4. In still some changing embodiments, the integration unit 2212 can use a commonly used active integration circuit or an integral operation chip. A voltage shaped signal Vout outputted after the shaping by the integration unit 2212 is a time integral of the output voltage of the filter and voltage-divider unit 2211.

[0061] In FIG. 3, to prevent the voltage of the integration unit 2212 from being outputted in reverse to the filter and voltage-divider unit 2211, a diode D1 is also disposed between an output end of the filter and voltage-divider unit 2211 and an input end of the integration unit 2212 to provide unidirectional outputting.

[0062] FIG. 6 shows a schematic diagram of a voltage shaped signal Vout that is outputted after the shaping module 221 filters and shapes the half-cycle voltage waveform, obtained by the second end of the induction coil 260, of the resonant voltage of the LC oscillator 222 in FIG. 5. As shown in FIG. 6, after the shaping module 221 performs filtering, voltage division, and integral shaping, the voltage shaped signal Vout has a voltage waveform in a down trend. Then, the MCU controller 224 can monitor or determine a variation or a change rate of the amplitude value of the resonant voltage of the LC oscillator 222 by sampling the voltage shaped signal Vout outputted by the shaping module 221.

[0063] A signal value of the voltage shaped signal Vout of the resonant voltage that is obtained after the shaping performed by the shaping module 221 is about between 0.05 V and 5 V. This is advantageous for sampling and obtaining by the I / O interface of the MCU controller 224. Compared with direct sampling on the original resonant voltage up to 30 V to 50 V through the I / O interface of the MCU controller 224, sampling on the signal value of the voltage shaped signal Vout obtained after the shaping will not burn out the I / O interface or the MCU controller 224 due to an excessively high voltage. Meanwhile, the voltage shaped signal Vout of the resonant voltage obtained after the shaping is more suitable for sampling analysis and comparative calculation.

[0064] For example, FIG. 7 shows a schematic diagram of sampling of a sampled signal V displayed on an oscilloscope after connecting sampled signals obtained by sampling performed by the MCU controller 224 on the voltage shaped signal Vout at a sampling interval of 0.25 ms. From the sampling of the sampled signal V displayed on the oscilloscope in FIG. 7, it can be seen that the sampled signals obtained by sampling performed by the MCU controller 224 on the voltage shaped signal Vout at the sampling interval of 0.25 ms are discretely fluctuating.

[0065] In this embodiment, to eliminate a sampling error and background signal noise during the sampling of the MCU controller 224, based on a gradually decreasing waveform of the voltage shaped signal Vout and a requirement for analyzing an amplitude decrease, the MCU controller 224 is configured to perform minimum value filtering on the sampling of the sampled signal V. Further, FIG. 7 shows a schematic diagram of filtering of a filtered signal V generated after the minimum value filtering is performed. The filtering of the filtered signal V generated after the minimum value filtering is performed can characterize a waveform representing the amplitude decrease of the resonant voltage.

[0066] Or, in some alternative embodiments, the MCU controller 224 may use mean filtering, Kalman filtering, particle filtering, or non-recursive FR filtering to filter the sampling of the sampled signal V to obtain filtering of a filtered signal V with less signal hopping and higher stability than the sampling of the sampled signal V.

[0067] In this embodiment, when the susceptor 30 atomizes liquid aerosol generating substrates with different unique properties such as atomization efficiencies, atomization temperatures, viscosities, specific heat, and the like, it is reflected in the circuit 220 as having different equivalent impedances. Correspondingly, the amplitude decrease of the resonant voltage of the LC oscillator 222 monitored within the predetermined time varies. The variation in the amplitude decrease of the resonant voltage is also evident in the filtering of the filtered signal V. For example, FIG. 8 shows a schematic diagram of comparison of filtering of filtered signals V of resonant voltages obtained by monitoring, by the MCU controller 224, the resonant voltages of the LC oscillator 222 when the liquid storage cavity 12 is filled with two different liquid aerosol generating substrates.

[0068] In FIG. 8, the liquid aerosol generating substrate corresponding to curve S1 contains about 50% of propylene glycol and 50% of vegetable glycerin. The liquid aerosol generating substrate corresponding to curve S2 contains about 40% of propylene glycol and 60% of vegetable glycerin, so that the liquid aerosol generating substrate has higher viscosity and higher specific heat capacity. As can be seen from the comparison of the filtering of the filtered signals V of the resonant voltages shown in FIG. 8, within the same predetermined time t1, curve S2 exhibits a greater decrease in the amplitude of the resonant voltage. For example, in FIG. 8, a voltage value of curve S1 decreases from V0 to V1, while a voltage value of curve S2 decreases from V0 to V2 which is less than V1. As shown in FIG. 8, by analyzing the filtering of the filtered signal V of the filtered resonant voltage, it is easier and more accurate for the MCU controller 224 to sample, analyze, and identify the unique property of the liquid aerosol generating substrate.

[0069] Based on different decrease degrees of the resonant voltage of the LC oscillator 222 in the detection process due to the liquid aerosol generating substrates with different unique properties shown in FIG. 8, the MCU controller 224 is configured to determine the unique property of the liquid aerosol generating substrate on the susceptor 30 by monitoring a voltage variation or a change rate based on the filtering of the filtered signal V of the resonant voltage of the LC oscillator 222. In addition, the MCU controller 224 is configured to control, during the determination of the unique property of the liquid aerosol generating substrate, driving on the induction coil 260 to generate a magnetic field at suitable power, to atomize the liquid aerosol generating substrate at a suitable power.

[0070] Or, in still some embodiments, the MCU controller 224 is configured to determine the unique property of the liquid aerosol generating substrate on the susceptor 30 by monitoring a variation or a change rate of the amplitude value of the resonant voltage of the LC oscillator 222 within the predetermined time.

[0071] Or, in still some embodiments, the MCU controller 224 is configured to determine the unique property of the liquid aerosol generating substrate by monitoring that a signal value voltage of the filtering of the filtered signal V of the resonant voltage of the LC oscillator 222 exceeds a preset threshold.

[0072] Or, in still some embodiments, the MCU controller 224 is configured to determine the unique property of the liquid aerosol generating substrate by monitor that a decrease in the amplitude value of the resonant voltage of the LC oscillator 222 exceeds a preset threshold.

[0073] Or, in still some embodiments, the MCU controller 224 is configured to determine the unique property of the liquid aerosol generating substrate on the susceptor 30 by monitoring a decrease degree or a variation or a change rate or the like of an amplitude value or a minimum value of the voltage shaped signal Vout of the amplitude value of the resonant voltage of the LC oscillator 222.

[0074] Or, in still some embodiments, a resonant current of the LC oscillator 222 is related to the resonant voltage. Specifically based on the electrical knowledge, the resonant current and the resonant voltage of the LC oscillator 222 have a phase difference of 1 / 4 cycle and have the same sinusoidal waveform. Thus, in still some embodiments, the MCU controller 224 is configured to determine the unique property of the liquid aerosol generating substrate on the susceptor 30 by monitoring and analyzing changes in the resonant current of the LC oscillator 222 through shaping and sampling.

[0075] In an optional embodiment, the MCU controller 224 is configured to control, when the airflow sensor 250 senses user inhalation, supplying of the predetermined energy to the LC oscillator 222 to determine the "unique property" of the liquid aerosol generating substrate. For example, in one specific embodiment, the airflow sensor 250 senses that duration of an inhalation action of a user is 3 s, and the MCU controller 224 controls supplying of the predetermined energy to the LC oscillator 222 within the initial 0.1 s serving as the predetermined time, to determine the "unique property" of the liquid aerosol generating substrate. Then, within the remaining 2.9 s, based on the determined unique property of the liquid aerosol generating substrate, the MCU controller 224 controls atomization on the liquid aerosol generating substrate at appropriate power.

[0076] In some optional embodiments, the MCU controller 224 is configured to control, when the user does not perform an inhalation action, supplying of the predetermined energy to the LC oscillator 222, to determine the "unique property" of the liquid aerosol generating substrate, for serving as an output power reference during subsequent inhalation to control atomization on the liquid aerosol generating substrate at appropriate power.

[0077] Or, in still some optional embodiments, the MCU controller 224 is configured to control, when the user replaces the atomizer 100 inside the receiving cavity 270 or when an atomizer 100 is placed into the receiving cavity 270 again, supplying of the predetermined energy to the LC oscillator 222, to determine the "unique property" of the liquid aerosol generating substrate, for serving as an output power reference during subsequent inhalation to control atomization on the liquid aerosol generating substrate at appropriate power.

[0078] The above describes only the embodiments of this application and does not limit the patent scope of this application. Any equivalent structure or equivalent process transformation made using the specification and contents of accompanying drawings of this application, or directly or indirectly applied to other related technical fields, are equally included in the scope of patent protection of this application.

[0079] It should be finally noted that: The foregoing various embodiments are merely intended to describe the technical solutions of this application, but not for limiting this application. Under the concept of this application, the technical features in the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order. There are many other variations of the different aspects of this application as described above, which are not provided in detail for the sake of simplicity. Although this application is described in detail with reference to the foregoing embodiments, persons of ordinary skill in the art should understand that they may still make modifications to the technical solutions described in the foregoing embodiments or make equivalent replacements to partial technical features thereof. However, these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the various embodiments of this application.

Examples

Embodiment Construction

[0017]To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Apparently, the described embodiments are merely some rather than all of the embodiments of this application. It should be understood that the specific embodiments described here are only intended to explain this application and are not intended to limit this application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of this application without making creative efforts shall fall within the protection scope of this application.

[0018]It should be noted that, when an element is expressed as "being fixed to" another element, the element may be directly on the another element, or one or more intermediate elements may exist between the elem...

Claims

1. An electronic atomization device, comprising: a susceptor configured to heat an aerosol generating substrate to generate aerosols; an LC oscillator comprising an induction coil and a capacitor, wherein the LC oscillator is configured to guide varying current to flow through the induction coil, thus driving the induction coil to supply energy to the susceptor to heat the aerosol generating substrate; a battery cell; and a controller configured to: control the battery cell to supply predetermined energy to the LC oscillator or the susceptor within predetermined time and detect a unique property of the aerosol generating substrate based on changes in a resonant voltage or resonant current of the LC oscillator within the predetermined time.

2. The electronic atomization device according to claim 1, wherein the controller is configured to detect the unique property of the aerosol generating substrate based on a variation or a change rate of an amplitude value of the resonant voltage or resonant current of the LC oscillator within the predetermined time.

3. The electronic atomization device according to claim 1, wherein the controller is configured to detect the unique property of the aerosol generating substrate when an amplitude value of the resonant voltage or resonant current of the LC oscillator exceeds a preset threshold.

4. The electronic atomization device according to any one of claims 1 to 3, further comprising: a shaping module configured to shape the resonant voltage or resonant current of the LC oscillator to form a shaped signal, wherein the controller is configured to detect the shaped signal obtained after the shaping performed by the shaping module, to obtain the changes in the resonant voltage or resonant current of the LC oscillator within the predetermined time.

5. The electronic atomization device according to claim 4, wherein the shaping module at least comprises: an integration unit configured to perform integral shaping on the resonant voltage or resonant current of the LC oscillator.

6. The electronic atomization device according to claim 5, wherein the shaping module further comprises: a first filter capacitor connected in series between the LC oscillator and the integration unit, to filter and shape the resonant voltage or resonant current of the LC oscillator and then supply the resonant voltage or resonant current to the integration unit.

7. The electronic atomization device according to claim 4, wherein the controller is configured to: sample the shaped signal formed by the shaping module and obtain the changes in the resonant voltage or resonant current of the LC oscillator within the predetermined time by performing minimum value filtering on a result of the sampling.

8. The electronic atomization device according to any one of claims 1 to 3, further comprising: an airflow sensor configured to sense an inhalation action of a user, wherein the controller is configured to: control, when the airflow sensor senses user inhalation, the battery cell to supply the predetermined energy to the LC oscillator or the susceptor within the predetermined time, so as to detect the unique property of the aerosol generating substrate, and then control, based on the detected unique property of the aerosol generating substrate, the susceptor to heat the aerosol generating substrate.

9. An electronic atomization device, comprising: a susceptor configured to heat an aerosol generating substrate to generate aerosols; an LC oscillator comprising an induction coil and a capacitor, wherein the LC oscillator is configured to guide varying current to flow through the induction coil, thus driving the induction coil to supply energy to the susceptor to heat the aerosol generating substrate; a battery cell; an integration unit configured to perform integral shaping on the resonant voltage or resonant current of the LC oscillator to generate a shaped signal; and a controller configured to: control the battery cell to supply predetermined energy to the LC oscillator or the susceptor within predetermined time and detect a unique property of the aerosol generating substrate based on the shaped signal outputted by the integration unit.

10. A control method for an electronic atomization device, wherein the electronic atomization device comprises: a susceptor configured to heat an aerosol generating substrate to generate aerosols; an LC oscillator comprising an induction coil and a capacitor, wherein the LC oscillator is configured to guide varying current to flow through the induction coil, thus driving the induction coil to supply energy to the susceptor to heat the aerosol generating substrate; and a battery cell, wherein the method comprises: controlling the battery cell to supply predetermined energy to the LC oscillator or the susceptor within predetermined time, and detecting a unique property of the aerosol generating substrate based on changes in a resonant voltage or resonant current of the LC oscillator within the predetermined time.

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