Electronic atomization device and control method

Abstract

The present application provides an electronic atomization device and a control method. The electronic atomization device comprises: a susceptor, used for heating an aerosol generating matrix to form an aerosol; an LC oscillator, which comprises an induction coil and a capacitor and is configured to guide a varying current to flow through the induction coil, so as to drive the susceptor to heat the aerosol generating matrix; a cell; and a controller, configured to control the cell to provide predetermined energy to the LC oscillator or the susceptor within a predetermined time and to test the unique properties of the aerosol generating matrix on the basis of a change in the resonance voltage or resonance current of the LC oscillator within the predetermined time. According to the electronic atomization device, the predetermined energy is provided to the LC oscillator or the susceptor within the predetermined time for testing the unique properties of the aerosol generating matrix, and the unique properties of the aerosol generating matrix are determined by monitoring the change in the resonance voltage or resonance current of the LC oscillator within the predetermined time.

Description

Electronic atomization device and control method

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on August 7, 2023, with application number 202310986478.5 and entitled “Electronic Atomization Device and Control Method,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The embodiments of the present application relate to the field of electronic atomization technology, and in particular to an electronic atomization device and a control method. Background Art

[0004] Smoking articles (eg, cigarettes, cigars, etc.) burn tobacco during use to produce tobacco smoke. Attempts have been made to replace these tobacco-burning articles by creating products that release compounds without combustion.

[0005] An example of such a product is a heating device that releases compounds by heating rather than burning a material. For example, the material may be tobacco or other non-tobacco products that may or may not contain nicotine. As another example, there are aerosol providing products, such as so-called electronic atomization devices. These devices typically contain a liquid that is heated to vaporize it, thereby producing an inhalable aerosol. Known electronic atomization devices generate a changing magnetic field through an induction coil to induce a receptor to heat the liquid to generate an aerosol. In the operation of this type of electronic atomization device that uses induction heating to atomize a variety of liquids with different flavors or atomization efficiencies, it is impossible to determine the flavor or atomization efficiency of the atomized liquid by detecting the temperature of the receptor.

[0006] Summary of the Invention

[0007] One embodiment of the present application provides an electronic atomization device, comprising:

[0008] a susceptor for heating the aerosol-generating substrate to form an aerosol;

[0009] An LC oscillator comprising an induction coil and a capacitor; the LC oscillator is configured to direct a varying current to flow through the induction coil, thereby driving the induction coil to provide energy to the susceptor so that the susceptor heats the aerosol generating substrate;

[0010] battery cells;

[0011] The controller is configured to control the battery cell to provide predetermined energy to the LC oscillator or the sensor within a predetermined time, and detect the unique properties of the aerosol generating substrate according to the change of the resonant voltage or resonant current of the LC oscillator within the predetermined time.

[0012] In some embodiments, the controller is configured to detect the unique property of the aerosol-generating substrate based on an amount or rate of change of the amplitude of the resonant voltage or the resonant current of the LC oscillator within the predetermined time.

[0013] In some embodiments, the controller is configured to detect the unique property of the aerosol-generating substrate based on the magnitude of the resonant voltage or the resonant current of the LC oscillator exceeding a preset threshold.

[0014] In some embodiments, further comprising:

[0015] A shaping module, configured to shape the resonant voltage or resonant current of the LC oscillator to form a shaped signal;

[0016] The controller is configured to obtain a change in the resonant voltage or the resonant current of the LC oscillator within the predetermined time by detecting the shaped signal after the shaping process by the shaping module.

[0017] In some embodiments, the shaping module includes at least:

[0018] The integration unit integrates and shapes the resonant voltage or resonant current of the LC oscillator.

[0019] In some embodiments, the shaping module further comprises:

[0020] The first filter capacitor is connected in series between the LC oscillator and the integration unit, so as to filter and shape the resonant voltage or resonant current of the LC oscillator and then provide the filtered resonant voltage or resonant current to the integration unit.

[0021] In some embodiments, the controller is configured to sample the shaped signal formed by the shaping module, and obtain the change of the resonant voltage or resonant current of the LC oscillator within the predetermined time by performing minimum filtering on the sampling result.

[0022] In some embodiments, further comprising:

[0023] An airflow sensor for sensing the user's puffing action;

[0024] The controller is configured to control the battery cell to provide predetermined energy to the LC oscillator or the receptor within a predetermined time when the airflow sensor senses a user taking a puff, so as to detect the unique properties of the aerosol-generating substrate, and control the receptor to heat the aerosol-generating substrate based on the detected unique properties of the aerosol-generating substrate.

[0025] Another embodiment of the present application further provides an electronic atomization device, comprising:

[0026] a susceptor for heating the aerosol-generating substrate to form an aerosol;

[0027] An LC oscillator comprising an induction coil and a capacitor; the LC oscillator is configured to direct a varying current to flow through the induction coil, thereby driving the induction coil to provide energy to the susceptor so that the susceptor heats the aerosol generating substrate;

[0028] battery cells;

[0029] an integrating unit, configured to integrate and shape the resonant voltage or resonant current of the LC oscillator to generate a shaped signal;

[0030] The controller is configured to control the battery cell to provide predetermined energy to the LC oscillator or the sensor within a predetermined time, and detect the unique properties of the aerosol generating substrate according to the shaped signal output by the integration unit.

[0031] Another embodiment of the present application further provides a control method for an electronic atomization device, the electronic atomization device comprising:

[0032] a susceptor for heating the aerosol-generating substrate to form an aerosol;

[0033] An LC oscillator comprising an induction coil and a capacitor; the LC oscillator is configured to direct a varying current to flow through the induction coil, thereby driving the induction coil to provide energy to the susceptor so that the susceptor heats the aerosol generating substrate;

[0034] battery cells;

[0035] The method comprises:

[0036] The battery cell is controlled to provide predetermined energy to the LC oscillator or the sensor within a predetermined time, and the unique properties of the aerosol generating substrate are detected according to the change of the resonant voltage or the resonant current of the LC oscillator within the predetermined time.

[0037] The above electronic atomization device provides predetermined energy to the LC oscillator or sensor within a predetermined time for detecting the unique properties of the aerosol generating matrix, and determines the unique properties of the aerosol generating matrix by monitoring the changes in the resonant voltage or resonant current of the LC oscillator within a predetermined time. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0039] FIG1 is a schematic diagram of an electronic atomization device provided by an embodiment;

[0040] FIG2 is a block diagram of an embodiment of the circuit in FIG1 ;

[0041] FIG3 is a schematic diagram of the basic components of one embodiment of the circuit in FIG2 ;

[0042] FIG4 is a schematic diagram of a change in the resonant voltage of an LC oscillator during a process of providing predetermined energy to a sensor at a predetermined time to detect a liquid aerosol-generating substrate in an embodiment;

[0043] FIG5 is a schematic diagram showing a method of sampling the voltage at the second end of the induction coil to obtain the resonant voltage of the LC oscillator in an embodiment;

[0044] FIG6 is a schematic diagram of filtering and shaping the resonant voltage in FIG5 in one embodiment;

[0045] FIG7 is a schematic diagram of a sampled signal obtained by sampling the output signal after filtering and shaping in FIG6 and a filtered signal after performing minimum filtering on the sampled signal in an embodiment;

[0046] FIG8 is a schematic diagram showing comparison of filtered signals when different liquid aerosol generating matrices are used in one embodiment. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0048] It should be noted that when an element is described as being "fixed to" another element, it may be directly on the other element, or one or more elements may be interposed therebetween. When an element is described as being "connected to" another element, it may be directly connected to the other element, or one or more elements may be interposed therebetween. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.

[0049] In addition, the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0050] One embodiment of the present application provides an electronic atomization device for atomizing an aerosol-generating substrate to generate an aerosol. In some embodiments, the electronic atomization device may include two or more separate or interchangeable parts that, when combined, form a complete, combined electronic atomization device capable of generating aerosol in response to user manipulation.

[0051] In some embodiments, the electronic atomization device can form an aerosol by heating a liquid aerosol-generating substrate; in some embodiments, the liquid aerosol-generating substrate includes at least one of propylene glycol, glycerin, and the like.

[0052] Alternatively, in yet other embodiments, the electronic atomization device can heat a solid aerosol-generating substrate, causing at least one component of the solid aerosol-generating substrate to volatilize or release, forming an aerosol for inhalation. In some implementations, the solid aerosol-generating substrate is preferably a solid substrate, which may include one or more of the following: powder, granules, shredded strips, ribbons, or flakes of one or more of herb leaves, dried flowers, volatile aroma-emitting herbal crops, tobacco leaves, homogenized tobacco, and expanded tobacco; alternatively, the solid substrate may contain additional tobacco or non-tobacco volatile aroma compounds to be released upon heating.

[0053] FIG1 shows a schematic diagram of an electronic atomization device according to an embodiment. In this embodiment, the electronic atomization device includes: an atomizer 100 for atomizing a liquid aerosol-generating substrate to generate an aerosol, and a power supply mechanism 200 for supplying power to the atomizer.

[0054] Further, as shown in FIG1 , the power supply mechanism 200 includes:

[0055] The proximal end 2110 and the distal end 2120 are opposed to each other in the longitudinal direction; in use, the proximal end 2110 is the end for receiving the nebulizer 100.

[0056] As shown in FIG1 , the power supply mechanism 200 further includes:

[0057] The receiving chamber 270 is arranged adjacent to the proximal end 2110 and is arranged along the longitudinal extension of the power supply mechanism 200; and the receiving chamber 270 has an opening toward or located at the proximal end 2110 along the longitudinal direction; in use, the atomizer 100 can be received in the receiving chamber 270 through the opening, or removed from the receiving chamber 270.

[0058] As shown in FIG1 , the power supply mechanism 200 further includes:

[0059] A rechargeable battery cell 210 for outputting electricity; and the battery cell 210 is arranged near the distal end 2120;

[0060] The charging interface 240 is used to charge the rechargeable battery cell 210 ; and the charging interface 240 is arranged between the battery cell 210 and the distal end 2120 .

[0061] In one embodiment, the DC supply voltage provided by the battery cell 210 is in a range of about 2.5V to about 9.0V, and the DC current amperage provided by the battery cell 210 is in a range of about 2.5A to about 20A. In a specific embodiment, the DC supply voltage provided by the battery cell 210 is 3.2V to 4.2V.

[0062] As shown in FIG1 , the power supply mechanism 200 further includes:

[0063] The circuit 220 is integrated or arranged on a circuit board, such as a PCB, and is used to control the operation of the power supply mechanism 200. In particular, the circuit 220 controls the power output by the battery cell 210. In FIG1 , the circuit 220 is located between the battery cell 210 and the receiving cavity 270.

[0064] As shown in FIG1 , the power supply mechanism 200 further includes:

[0065] The airflow sensor 250, such as a microphone / MEMS sensor, is used to sense the airflow flowing through the atomizer 100 when the user draws on the atomizer 100; and the circuit 220 controls the power output of the battery cell 210 based on the sensing results of the airflow sensor 250. In the embodiment shown in Figure 1, the airflow sensor 250 is arranged between the battery cell 210 and the receiving cavity 270. In other variations, the airflow sensor 250 can also be assembled, fastened, or combined with the circuit board on which the circuit 220 is arranged. Alternatively, in other variations, the airflow sensor 250 is supported and fixed within the power supply mechanism 200 by an independent support element, such as a plastic bracket.

[0066] In some embodiments, the power supply mechanism 200 induces the nebulizer 100 to heat the atomized liquid aerosol generating matrix by generating a changing magnetic field passing through the receiving cavity 270; specifically, an induction heating element can be arranged in the nebulizer 100, and when the nebulizer 100 is received in the receiving cavity 270, it can be penetrated by the changing magnetic field to generate heat to heat the liquid aerosol generating matrix to form an aerosol.

[0067] As shown in FIG1 , the power supply mechanism 200 further includes:

[0068] The induction coil 260 is arranged around the receiving cavity 270;

[0069] Circuit 220 generates an alternating current through induction coil 260 at a predetermined frequency, thereby causing induction coil 260 to generate a varying magnetic field capable of penetrating receiving cavity 270. In some embodiments, the frequency of the alternating current supplied by circuit 220 to induction coil 260 is between 80 kHz and 2000 kHz; more specifically, the frequency can be in the range of approximately 600 kHz to 1500 kHz.

[0070] In some embodiments, the induction coil 260 is wound with a low-resistivity wire material, such as copper wire, silver wire, etc. In yet other embodiments, the induction coil 260 is wound with Litz wire; Litz wire with multiple strands or bundles of wires is more advantageous for carrying alternating current.

[0071] FIG1 shows a schematic diagram of an atomizer 100 according to an embodiment. The atomizer 100 according to the embodiment includes:

[0072] main housing 10;

[0073] The partition wall 11 extends longitudinally within the main housing 10 of the atomizer 100. The partition wall 11 is integrally molded with the main housing 10, for example, from a polymer, ceramic, or other material. The partition wall 11 extends to or terminates at the air outlet 111. A liquid storage chamber 12 is defined between the partition wall 11 and the main housing 10 for storing a liquid aerosol-generating substrate. Furthermore, the partition wall 11 surrounds and defines an aerosol output channel within the main housing 10 for outputting aerosol to the air outlet 111 during inhalation.

[0074] The atomizer 100 further comprises:

[0075] Atomizing assembly, used to atomize a liquid aerosol-generating matrix to generate an aerosol; in FIG1 , the atomizing assembly includes:

[0076] The susceptor 30 is used to heat the liquid aerosol-generating substrate to generate aerosol;

[0077] The liquid-conducting element 20 is used to transfer the liquid aerosol-generating substrate between the liquid storage chamber 12 and the receptor 30 . The liquid-conducting element 20 absorbs the liquid aerosol-generating substrate and transfers or provides it to the receptor 30 to heat it and generate an aerosol.

[0078] In the embodiment shown in FIG1 , the liquid-conducting element 20 is configured to be located within the partition wall 11; furthermore, the liquid-conducting element 20 is configured to be a hollow cylinder extending longitudinally. In some embodiments, the liquid-conducting element 20 is made of a capillary material or a porous material, such as a sponge, cotton fiber, or a porous body such as a porous ceramic body. The outer surface of the liquid-conducting element 20 is configured as a liquid-absorbing surface for absorbing the liquid aerosol-generating matrix from the liquid storage chamber 12; in some specific embodiments, the partition wall 11 is provided with a plurality of perforations, and the outer surface of the liquid-conducting element 20 absorbs the liquid aerosol-generating matrix from the liquid storage chamber 12 through the perforations. The inner surface of the liquid-conducting element 20 is configured as an atomizing surface; the sensor 30 is coupled to the inner surface of the liquid-conducting element 20 to heat at least a portion of the liquid aerosol-generating matrix within the liquid-conducting element 20 to generate an aerosol.

[0079] In yet other embodiments, the liquid-conducting element 20 may be configured in various regular or irregular shapes and partially fluidically connected to the liquid storage chamber 12 to receive the liquid aerosol-generating substrate. Alternatively, in other variations, the liquid-conducting element 20 may be in more regular or irregular shapes, such as a polygonal block, a groove-shaped shape with grooves on the surface, or an arched shape with a hollow channel inside.

[0080] Alternatively, in some alternative implementations, the susceptor 30 may be bonded to the liquid-conducting element 20 by printing, deposition, sintering, or physical assembly. In some other alternative embodiments, the liquid-conducting element 20 may have a flat or curved surface for supporting the susceptor 30, and the susceptor 30 may be formed on the flat or curved surface of the porous liquid-conducting element 20 by mounting, printing, deposition, or the like.

[0081] In the embodiment shown in FIG1 , the susceptor 30 is an induction heating element that can be heated by a varying magnetic field. The susceptor 30 is made of a sensitive metal or alloy. For example, the susceptor 30 can be made of grade 430 stainless steel (SS430), grade 420 stainless steel (SS420), or an alloy containing iron and nickel (such as Permalloy). In some specific embodiments, the susceptor 30 has a length of 2 mm to 10 mm, an inner diameter of 1.5 mm to 8 mm, and a thickness of a partition wall of the susceptor 30 of 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 FIG1 , the susceptor 30 is a circumferentially closed tubular shape and a mesh structure having a plurality of holes arranged in an array for releasing aerosols.

[0082] Alternatively, in some alternative embodiments, the susceptor 30 may be configured in a solenoid shape or a more cylindrical shape.

[0083] In the embodiment shown in FIG. 1 , the induction coil 260 extends for a length of 6 to 15 mm and has approximately 6 to 12 turns. The length of the susceptor 30 is less than that of the induction coil 260 . Therefore, when the atomizer 100 is received in the receiving cavity 270 , the susceptor 30 is substantially completely located within the induction coil 260 .

[0084] FIG2 shows a schematic diagram of a circuit 220 in one embodiment. In the embodiment, the circuit 220 includes:

[0085] LC oscillator 222, formed by connecting an induction coil 260 and a capacitor;

[0086] The bridge 223 is 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 .

[0087] FIG3 shows a schematic diagram of basic components of a circuit 220 according to a specific embodiment. In FIG3 , the LC oscillator 222 is an LC oscillator having two symmetrical bridge arms. Specifically, in FIG3 , the LC oscillator 222 includes:

[0088] Capacitor C1 and capacitor C2 are connected in series; wherein the first end of capacitor C1 is connected to the positive electrode of battery cell 210, and the second end is connected to the first end of capacitor C2; the second end of capacitor C2 is connected to the negative electrode of battery cell 210 through grounding; the second end of capacitor C1 and the first end of capacitor C2 are simultaneously connected to the second end of induction coil 260.

[0089] In Figure 3 , bridge 223 is a half-bridge matched to symmetrical LC oscillator 222 . In Figure 3 , bridge 223 , for example a half-bridge, includes a series-connected switch Q1 and a switch Q2 . In the connections shown in Figure 3 , the first end of switch Q1 is connected to the positive terminal of battery cell 210 , and the second end is connected to the first end of induction coil 260 ; the first end of switch Q2 is connected to the first end of induction coil 260 , and the second end is grounded to the negative terminal of battery cell 210 . Furthermore, the on and off states of switches Q1 and Q2 are controlled by PWM control signals modulated by MCU controller 224 . Alternatively, in other common variations, bridge 223 can also be a full-bridge or H-bridge comprising four switches.

[0090] In the embodiment of FIG. 3 , the MCU controller 224 drives the LC oscillator 222 to oscillate by controlling the alternating on and off of the switch tubes Q1 and Q2 , thereby forming an alternating current flowing through the induction coil 260 , causing the induction coil 260 to generate a varying magnetic field to induce the receptor 30 to heat and form an aerosol.

[0091] Alternatively, in some alternative embodiments, the LC oscillator 222 may be an asymmetric half-bridge LC oscillator 222 consisting of only one capacitor C2 connected in series with the induction coil 260 , and having only one oscillation bridge arm consisting of the capacitor C2 and the induction coil 260 connected in series.

[0092] In some embodiments, when the airflow sensor 250 senses the user's inhalation, the MCU controller 224 modulates the PWM control signal to alternately turn on and off the switch tube Q1 and the switch tube Q2, thereby driving the LC oscillator 222 to oscillate so that the induction coil 260 generates a changing magnetic field, thereby inducing the receptor 30 to heat the liquid aerosol generation matrix.

[0093] One embodiment of the present application further proposes controlling the supply of a predetermined energy to the LC oscillator 222 or susceptor 30 to determine the "unique properties" of the liquid aerosol-generating substrate. Specifically, when the susceptor 30 heats the liquid aerosol-generating substrate, its energy is absorbed by the liquid aerosol-generating substrate, resulting in a change in the equivalent impedance of the induction coil 260 and the susceptor 30 in the circuit 220. Furthermore, when the predetermined energy is supplied to the LC oscillator 222 within a predetermined time, such as 100 ms, the amplitude Vmax of the resonant voltage of the LC oscillator 222 exhibits a gradually decreasing pattern as shown in FIG4 . When the susceptor 30 heats liquid aerosol-generating substrates of different compositions or unique properties, the amplitude Vmax of the resonant voltage of the LC oscillator 222 decreases to varying degrees.

[0094] In an embodiment, the predetermined energy provided to the LC oscillator 222 is controlled by controlling the total on-time of the switches Q1 and Q2 in the bridge 223. Specifically, the energy provided to the LC oscillator 222 can be calculated and controlled based on the total on-time of the switches Q1 and Q2 in the bridge 223 and the output voltage of the battery cell 210 so as to maintain the predetermined energy.

[0095] In an embodiment, the MCU controller 224 determines the unique properties of the liquid aerosol generating substrate by providing a predetermined energy to the LC oscillator 222 within a predetermined time, such as 100 ms, and monitoring whether the resonant voltage of the LC oscillator 222 exceeds a preset threshold or a change amount or a change rate within the predetermined time.

[0096] In some specific implementations, the above unique properties of the liquid aerosol-generating substrate may include at least one of the viscosity, specific heat, boiling point, or vaporization efficiency of the liquid aerosol-generating substrate.

[0097] For example, in some specific implementations, the unique properties of the above liquid aerosol-generating substrate may include the content of propylene glycol or vegetable glycerin with different vaporization efficiencies in the liquid aerosol-generating substrate.

[0098] For example, in some specific implementations, the unique properties of the liquid aerosol-generating substrate may include the optimal vaporization power or vaporization temperature of the liquid aerosol-generating substrate.

[0099] For example, in some specific implementations, the unique properties of the liquid aerosol-generating substrate may include the strength of nicotine contained in the liquid aerosol-generating substrate, such as the nicotine content.

[0100] In some embodiments, during the process of detecting the unique properties of the liquid aerosol-generating substrate, a predetermined energy value is provided to the LC oscillator 222 within a predetermined time, such as 100 ms. A relatively large energy value, for example, a greater energy value than that provided to the susceptor 30 during the same predetermined time during a puff, can be used to increase the amplitude variation of the resonant voltage, thereby facilitating detection and analysis by the MCU controller 224. For example, in some specific embodiments, during a puff, the MCU controller 224 controls the energy provided to the susceptor 30 at a rate of 11.6667 J / s. Furthermore, during this detection process, the MCU controller 224 controls the energy provided to the susceptor 30 at a predetermined energy value of approximately 1.5 J to 3 J within a predetermined time, such as 100 ms, thereby facilitating detection and analysis by the MCU controller 224 of the amplitude variation of the resonant voltage.

[0101] In some embodiments, the predetermined time is less than 300 ms, so as to make the detection time length as short as possible without affecting the normal heating power process of the user's puffing.

[0102] In some specific embodiments, the predetermined energy provided to the susceptor 30 within the predetermined time is achieved by the MCU controller 224 controlling the power output to the LC oscillator 222 via the bridge 223. Specifically, the energy provided to the susceptor 30 is related to the magnetic field generated by the induction coil 260, and the magnetic field generated by the induction coil 260 is further determined by the power output by the battery cell 210 to the LC oscillator 222 via the bridge 223. Therefore, in practice, the predetermined energy provided to the susceptor 30 within the predetermined time can be achieved by the MCU controller 224 controlling the power output by the battery cell 210 to the LC oscillator 222 via the bridge 223.

[0103] In order to enable the MCU controller 224 to accurately sample and analyze and identify changes in the resonant voltage of the LC oscillator 222, as shown in Figures 2 and 3, the circuit 220 further includes:

[0104] The shaping module 221 is used to shape the resonant voltage of the LC oscillator 222 so that the MCU controller 224 can sample and monitor the resonant voltage of the LC oscillator 222 .

[0105] As shown in FIG3 , the shaping module 221 is connected to the second end of the induction coil 260 of the LC oscillator 222. FIG5 shows the voltage waveform at the second end of the induction coil 260 obtained by the shaping module 221. Since the shaping module 221 is only connected to the second end of the induction coil 260 during use, it can only obtain the waveform of the resonant voltage of the LC oscillator 222 during half a cycle. Of course, technicians can also obtain the waveform of the other half cycle of the resonant voltage of the LC oscillator 222 by connecting the shaping module 221 to the first end of the induction coil 260.

[0106] Specifically, as shown in FIG3 , the shaping module 221 includes a filtering voltage dividing unit 2211 and an integrating unit 2212 .

[0107] The filter voltage divider unit 2211 is connected to the second end of the induction coil 260 and is used to filter and divide the resonant voltage of the LC oscillator 222 to shape the voltage. Specifically, the filter voltage divider unit 2211 includes a filter capacitor C3, a voltage divider resistor R1 and a voltage divider resistor R2 connected in series, and a filter capacitor C4 connected in parallel. In Figure 3, the resonant voltage of the LC oscillator 222 is filtered by the filter capacitor C3 connected in series, divided and amplified by the voltage divider resistors R1 and R2, and then filtered by the filter capacitor C4 before output. The voltage divider resistors R1 and R2 mainly reduce the voltage value originally about 30 to 50 volts to a range of about 0.05 to 5 volts to prevent the signal strength from exceeding the sampling range of the conventional I / O interface and being unable to be sampled or burning the I / O interface.

[0108] Integration unit 2212 is used to integrate and shape the output signal of filtering and voltage divider unit 2211. As shown in Figure 3, integration unit 2212 is a conventional passive RC integration circuit, including capacitor C5, resistors R3, and resistor R4. In other embodiments, integration unit 2212 can also adopt a conventional active integration circuit or integration operation chip. After being shaped by integration unit 2212, the output voltage shaped signal Vout is the integral of the output voltage of filtering and voltage divider unit 2211 over time.

[0109] In FIG3 , in order to prevent the voltage of the integration unit 2212 from being outputted reversely to the filtering voltage divider unit 2211 , a diode D1 is further arranged between the output end of the filtering voltage divider unit 2211 and the input end of the integration unit 2212 to provide a unidirectional output.

[0110] FIG6 shows a schematic diagram of a voltage-shaped signal Vout outputted after filtering and shaping by shaping module 221, after filtering, voltage division, integration, and shaping by shaping module 221, representing a half-cycle of the resonant voltage of LC oscillator 222 obtained via the second end of induction coil 260 in FIG5 . As shown in FIG6 , after filtering, voltage division, integration, and shaping by shaping module 221, voltage-shaped signal Vout exhibits a voltage waveform exhibiting a downward trend. MCU controller 224 can then monitor or determine the change in the amplitude or rate of change of the resonant voltage of LC oscillator 222 by sampling voltage-shaped signal Vout outputted by shaping module 221.

[0111] The resonant voltage shaped signal Vout, after being shaped by shaping module 221, has a signal value between approximately 0.05V and 5V, which is advantageous for sampling and acquisition by the I / O interface of MCU controller 224. Compared to directly sampling the original resonant voltage, which can reach as high as 30V to 50V, sampling the shaped resonant voltage signal Vout prevents the I / O interface or MCU controller 224 from being damaged by excessive voltage. Furthermore, the shaped resonant voltage signal Vout is more suitable for sampling, analysis, and comparative calculations.

[0112] For example, FIG7 shows a schematic diagram of a sampling signal Vsampled displayed on an oscilloscope after connecting a sampling signal obtained by the MCU controller 224 sampling the voltage-shaped signal Vout at a sampling frequency of 0.25 ms / time. As can be seen from the sampling signal Vsampled displayed on the oscilloscope shown in FIG7 , the sampling signal Vsampled obtained by the MCU controller 224 sampling the voltage-shaped signal Vout at a sampling frequency of 0.25 ms / time jumps relatively discretely.

[0113] In this embodiment, in order to eliminate the sampling error and the background noise during the sampling process of the MCU controller 224, and based on the waveform of the voltage shaping signal Vout showing a downward trend and gradually decreasing, and the need to analyze the amplitude of the decrease, the MCU controller 224 is configured to perform minimum filtering on the sampling signal Vsampling; further, Figure 7 shows a schematic diagram of the filtered signal Vfiltered generated after the minimum filtering process, and the filtered signal Vfiltered after the minimum filtering process can characterize the waveform of the resonant voltage drop.

[0114] Or in some alternative embodiments, the MCU controller 224 can also use mean filtering, Kalman filtering, particle filtering or non-recursive FR filtering to filter the sampling signal Vsampling to obtain a filtered signal Vfiltered with smaller jumps and more stable signal than the sampling signal Vsampling.

[0115] In an embodiment, when susceptor 30 atomizes liquid aerosol-generating substrates having different unique properties, such as vaporization efficiency, vaporization temperature, viscosity, specific heat, etc., these substrates manifest themselves as different equivalent impedances in circuit 220. Accordingly, the extent of the decrease in the amplitude of the resonant voltage of LC oscillator 222 monitored within a predetermined time period varies. This difference in decrease is also significantly reflected in the filtered signal Vfiltered. For example, FIG8 shows a comparative schematic diagram of the filtered signals Vfiltered obtained by MCU controller 224 by monitoring the resonant voltage of LC oscillator 222 when two different liquid aerosol-generating substrates are filled in liquid storage chamber 12.

[0116] In FIG8 , the liquid aerosol-generating matrix corresponding to curve S1 contains approximately 50% propylene glycol and 50% vegetable glycerin; the liquid aerosol-generating matrix corresponding to curve S2 contains approximately 40% propylene glycol and 60% vegetable glycerin, resulting in a relatively higher viscosity and a larger specific heat capacity. A comparison of their filtered signals, Vfiltered, shown in FIG8 , shows that within the same predetermined time t1, curve S2 exhibits a greater decrease in the amplitude of the resonant voltage. For example, the voltage value of curve S1 in FIG8 decreases from V0 to V1, while the voltage of curve S2 decreases from V0 to V2, which is lower than V1. As shown in FIG8 , by analyzing the filtered resonant voltage filtered signal, Vfiltered, it is easier and more accurate for the MCU controller 224 to sample, analyze, and identify the unique properties of the liquid aerosol-generating matrix.

[0117] Based on the different decreases in the resonant voltage of LC oscillator 222 during the detection process caused by liquid aerosol-generating substrates having different unique properties as shown in FIG8 , MCU controller 224 is configured to determine the unique properties of the liquid aerosol-generating substrate on susceptor 30 by monitoring the voltage change or rate of change of filtered signal Vfiltered based on the resonant voltage of LC oscillator 222. Furthermore, upon determining the unique properties of the liquid aerosol-generating substrate, MCU controller 224 is configured to control induction coil 260 to generate a magnetic field at an appropriate power to atomize the liquid aerosol-generating substrate at the appropriate power.

[0118] Alternatively, in some other embodiments, the MCU controller 224 is configured to determine the unique properties of the liquid aerosol generating substrate on the susceptor 30 by monitoring the amount or rate of change of the amplitude of the resonant voltage of the LC oscillator 222 within a predetermined time.

[0119] Alternatively, in some other embodiments, the MCU controller 224 is configured to determine the unique property of the liquid aerosol generating substrate by monitoring the filtered signal Vfiltered of the resonant voltage of the LC oscillator 222 to determine if the voltage exceeds a preset threshold.

[0120] Alternatively, in some embodiments, the MCU controller 224 is configured to determine the unique property of the liquid aerosol generating substrate by monitoring when the amplitude of the resonant voltage of the LC oscillator 222 drops above a preset threshold.

[0121] Alternatively, in some other embodiments, the MCU controller 224 is configured to determine the unique properties of the liquid aerosol generating substrate on the susceptor 30 by monitoring the amplitude or minimum value of the voltage-shaped signal Vout of the resonant voltage of the LC oscillator 222, the degree of decrease, the amount of change, the rate of change, etc.

[0122] Alternatively, in some other embodiments, the resonant current of the LC oscillator 222 is related to the resonant voltage. Specifically, based on electrical knowledge, the resonant current of the LC oscillator 222 and the resonant voltage have a phase difference of 1 / 4 cycle and have the same sinusoidal waveform. Furthermore, in some other embodiments, the MCU controller 224 is configured to determine the unique properties 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.

[0123] In an optional embodiment, the MCU controller 224 is configured to control the supply of a predetermined energy to the LC oscillator 222 to determine the "unique properties" of the liquid aerosol-generating substrate when the airflow sensor 250 senses a user puff. For example, in one specific embodiment, the airflow sensor 250 senses a puff action lasting 3 seconds. The MCU controller 224 controls the supply of a predetermined energy to the LC oscillator 222 for the initial 0.1 seconds as the predetermined time to determine the "unique properties" of the liquid aerosol-generating substrate. The MCU controller then controls the atomization of the liquid aerosol-generating substrate at an appropriate power level based on the determined unique properties of the liquid aerosol-generating substrate for the remaining 2.9 seconds.

[0124] In some optional embodiments, the MCU controller 224 is configured to control the supply of predetermined energy to the LC oscillator 222 to determine the "unique properties" of the liquid aerosol generating matrix when the user is not inhaling, so as to be used as a reference for output power during subsequent inhalation to control the atomization of the liquid aerosol generating matrix at an appropriate power.

[0125] Alternatively, in some optional embodiments, the MCU controller 224 is configured to control the provision of predetermined energy to the LC oscillator 222 to determine the "unique properties" of the liquid aerosol generating matrix when the user replaces the nebulizer 100 in the receiving chamber 270 or when the nebulizer 100 is reinserted into the receiving chamber 270, so as to serve as a reference for output power during subsequent inhalation to control the atomization of the liquid aerosol generating matrix at an appropriate power.

[0126] The above description is merely an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

[0127] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Based on the concept of the present application, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present application as described above. For the sake of simplicity, they are not provided in detail. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An electronic atomization device, characterized in that: include: a susceptor for heating the aerosol-generating substrate to form an aerosol; An LC oscillator, comprising an induction coil and a capacitor; the LC oscillator is configured to guide a changing current to flow through the induction coil, thereby driving the induction coil to provide energy to the susceptor so that the susceptor heats the aerosol generating substrate; Battery cells; The controller is configured to control the battery cell to provide predetermined energy to the LC oscillator or the sensor within a predetermined time, and detect the unique properties of the aerosol generating substrate according to the change of the resonant voltage or the resonant current of the LC oscillator within the predetermined time.

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

3. The electronic atomization device according to claim 1, characterized in that: The controller is configured to detect a unique property of the aerosol generating substrate based on the magnitude of a resonant voltage or a resonant current of the LC oscillator exceeding a preset threshold.

4. The electronic atomization device according to any one of claims 1 to 3, characterized in that: Also includes: A shaping module, used for shaping the resonant voltage or resonant current of the LC oscillator to form a shaped signal; The controller is configured to obtain a change in a resonant voltage or a resonant current of the LC oscillator within the predetermined time by detecting a shaped signal after the shaping module performs the shaping process.

5. The electronic atomization device according to claim 4, characterized in that: The shaping module at least includes: The integration unit integrates and shapes the resonant voltage or resonant current of the LC oscillator.

6. The electronic atomization device according to claim 5, characterized in that: The shaping module also includes: The first filter capacitor is 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 provide it to the integration unit.

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

8. The electronic atomization device according to any one of claims 1 to 3, characterized in that: Also includes: An airflow sensor for sensing the user's puffing action; The controller is configured to control the battery cell to provide predetermined energy to the LC oscillator or the receptor within a predetermined time to detect the unique properties of the aerosol generating substrate when the airflow sensor senses the user's inhalation, and control the receptor to heat the aerosol generating substrate based on the detected unique properties of the aerosol generating substrate.

9. An electronic atomization device, characterized in that: include: a susceptor for heating the aerosol-generating substrate to form an aerosol; An LC oscillator, comprising an induction coil and a capacitor; the LC oscillator is configured to guide a changing current to flow through the induction coil, thereby driving the induction coil to provide energy to the susceptor so that the susceptor heats the aerosol generating substrate; Battery cells; An integration unit, used for integrating and shaping the resonant voltage or resonant current of the LC oscillator to generate a shaped signal; The controller is configured to control the battery cell to provide a predetermined energy to the LC oscillator or the sensor within a predetermined time, and detect the unique properties of the aerosol generating substrate according to the shaped signal output by the integration unit.

10. A control method for an electronic atomization device, the electronic atomization device comprising: a susceptor for heating the aerosol-generating substrate to form an aerosol; LC oscillator, including an induction coil and a capacitor; The LC oscillator is configured to guide a changing current to flow through the induction coil, thereby driving the induction coil to provide energy to the susceptor so that the susceptor heats the aerosol generating substrate; Battery cells; Characterized in that the method comprises: The battery cell is controlled to provide predetermined energy to the LC oscillator or the sensor within a predetermined time, and the unique properties of the aerosol generating substrate are detected according to the change of the resonant voltage or the resonant current of the LC oscillator within the predetermined time.

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