Electronic atomization device and control method

Abstract

The invention provides an electronic atomization device and a control method. Wherein the electronic atomization device comprises: a susceptor for heating an aerosol-generating substrate to form an aerosol; the LC oscillator comprises an induction coil and a capacitor, and is configured to guide changing current to flow through the induction coil so as to drive the susceptor to heat the aerosol-generating substrate; a battery cell; and the controller is configured to control the battery cell to provide predetermined energy to the LC oscillator or the susceptor within a predetermined time, and detect the unique property of the aerosol-generating substrate according to the change of the resonance voltage or the resonance current of the LC oscillator within the predetermined time. The electronic atomization device determines the unique properties of the aerosol-generating substrate by providing predetermined energy to the LC oscillator or the susceptor for a predetermined time for detection of the unique properties of the aerosol-generating substrate and by monitoring changes in the resonant voltage or resonant current of the LC oscillator for the predetermined time.

Description

Technical Field

[0001] 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

[0002] Smoking articles (eg, cigarettes, cigars, etc.) burn tobacco during use to produce tobacco smoke. People have attempted to replace these tobacco-burning articles by creating products that release compounds without combustion.

[0003] 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 induction-induced heating atomizes a variety of liquids of 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. Summary of the invention

[0004] An embodiment of the present application provides an electronic atomization device, comprising:

[0005] a susceptor for heating the aerosol-generating substrate to form an aerosol;

[0006] 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;

[0007] Battery cells;

[0008] 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.

[0009] 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.

[0010] 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.

[0011] In some embodiments, it also includes:

[0012] A shaping module, used for shaping the resonant voltage or resonant current of the LC oscillator to form a shaped signal;

[0013] 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 process by the shaping module.

[0014] In some embodiments, the shaping module includes at least:

[0015] The integration unit integrates and shapes the resonant voltage or resonant current of the LC oscillator.

[0016] In some embodiments, the shaping module further comprises:

[0017] 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.

[0018] 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 sampled result.

[0019] In some embodiments, it also includes:

[0020] An airflow sensor for sensing the user's puffing action;

[0021] 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.

[0022] Another embodiment of the present application further provides an electronic atomization device, comprising:

[0023] a susceptor for heating the aerosol-generating substrate to form an aerosol;

[0024] 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;

[0025] Battery cells;

[0026] An integration unit, used for integrating and shaping the resonant voltage or resonant current of the LC oscillator to generate a shaped signal;

[0027] 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.

[0028] Another embodiment of the present application further provides a control method for an electronic atomization device, the electronic atomization device comprising:

[0029] a susceptor for heating the aerosol-generating substrate to form an aerosol;

[0030] 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;

[0031] Battery cells;

[0032] The method comprises:

[0033] 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.

[0034] 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

[0035] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0036] Figure 1 is a schematic diagram of an electronic atomization device provided by an embodiment;

[0037] Figure 2 yes Figure 1 A structural block diagram of an embodiment of the circuit;

[0038] Figure 3 yes Figure 2 A schematic diagram of basic components of one embodiment of the circuit;

[0039] Figure 4 is a schematic diagram of a change in the resonant voltage of an LC oscillator during a process of providing a predetermined energy to a receptor at a predetermined time to detect a liquid aerosol generating substrate in an embodiment;

[0040] Figure 5 is a schematic diagram of obtaining the voltage at the second end of the induction coil in the resonant voltage of the LC oscillator by sampling the voltage at the second end of the induction coil;

[0041] Figure 6 In one embodiment, Figure 4 Schematic diagram of the resonant voltage after filtering and shaping;

[0042] Figure 7 In one embodiment, Figure 6 A schematic diagram of a sampled signal obtained by sampling the output signal after filtering and shaping and a filtered signal after minimum filtering of the sampled signal;

[0043] Figure 8 It is a schematic diagram comparing the filtering signals when different liquid aerosol generating matrices are used. DETAILED DESCRIPTION

[0044] In order to facilitate the understanding of the present application, the present application is described in more detail below in conjunction with the accompanying drawings and specific implementation methods.

[0045] 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 parts that are separated or replaced from each other, which, when combined, form a complete combined use state of the electronic atomization device and can generate an aerosol in response to a user's operation.

[0046] 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.

[0047] Or in some other embodiments, the electronic atomization device can form an aerosol for inhalation by heating a solid aerosol-generating substrate to volatilize or release at least one component of the solid aerosol-generating substrate. In some implementations, the solid aerosol-generating substrate preferably adopts a solid substrate, which can include one or more of powder, particles, fragments, strips, or flakes of one or more of herb leaves, dried flowers, herbal crops with volatile aroma, tobacco leaves, homogenized tobacco, and expanded tobacco; or, the solid substrate can contain additional tobacco or non-tobacco volatile aroma compounds to be released when the substrate is heated.

[0048] Figure 1 A schematic diagram of an electronic atomization device according to an embodiment is shown. In this embodiment, the electronic atomization device comprises: an atomizer 100 for atomizing a liquid aerosol to generate a substrate to generate an aerosol, and a power supply mechanism 200 for supplying power to the atomizer.

[0049] Further based on Figure 1 As shown, the power supply mechanism 200 includes:

[0050] The proximal end 2110 and the distal end 2120 are separated from each other in the longitudinal direction; in use, the proximal end 2110 is the end for receiving the nebulizer 100.

[0051] according to Figure 1 As shown, the power supply mechanism 200 also includes:

[0052] 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 along the longitudinal direction toward or located at the proximal end 2110; in use, the atomizer 100 can be received in the receiving chamber 270 through the opening, or removed from the receiving chamber 270.

[0053] according to Figure 1 As shown, the power supply mechanism 200 also includes:

[0054] A rechargeable battery cell 210 for outputting power; and the battery cell 210 is arranged near the distal end 2120;

[0055] 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 .

[0056] In one embodiment, the DC supply voltage provided by the battery cell 210 is in the range of about 2.5V to about 9.0V, and the amperage of the DC current provided by the battery cell 210 is in the 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.

[0057] according to Figure 1 As shown, the power supply mechanism 200 also includes:

[0058] The circuit 220 is integrated or arranged on a circuit board such as a PCB board, and is used to control the operation of the power supply mechanism 200, and in particular, the circuit 220 controls the power output by the battery cell 210. Figure 1 In the embodiment, the circuit 220 is located between the battery cell 210 and the receiving cavity 270 .

[0059] according to Figure 1 As shown, the power supply mechanism 200 also includes:

[0060] 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 air from the atomizer 100; and the circuit 220 controls the power output of the battery cell 210 according to the sensing result of the airflow sensor 250. Figure 1 In the illustrated embodiment, the airflow sensor 250 is arranged between the battery cell 210 and the receiving cavity 270. In some other embodiments, the airflow sensor 250 may also be assembled, fastened or combined on a circuit board on which the circuit 220 is arranged. Or in some other embodiments, the airflow sensor 250 is supported and fixed in the power supply mechanism 200 by an independent supporting element such as a plastic bracket.

[0061] In some embodiments, the power supply mechanism 200 induces the nebulizer 100 to heat the atomized liquid aerosol generating substrate by generating a changing magnetic field passing through the receiving cavity 270; specifically, an induction heating element may be arranged in the nebulizer 100, and when the nebulizer 100 is received in the receiving cavity 270, the changing magnetic field can penetrate and generate heat to heat the liquid aerosol generating substrate to form an aerosol.

[0062] according to Figure 1 As shown, the power supply mechanism 200 also includes:

[0063] The induction coil 260 is arranged around the receiving cavity 270;

[0064] The circuit 220 drives the induction coil 260 at a predetermined frequency to generate an alternating current, thereby causing the induction coil 260 to generate a changing magnetic field that can penetrate the receiving cavity 270. In some embodiments, the frequency of the alternating current supplied by the circuit 220 to the induction coil 260 is between 80 KHz and 2000 KHz; more specifically, the frequency may be in the range of about 600 KHz to 1500 KHz.

[0065] And in some embodiments, the induction coil 260 is wound with a wire material with low resistivity, such as copper wire, silver wire, etc. And in some other embodiments, the induction coil 260 is wound with a Litz wire; Litz wire with multiple strands or multiple bundles of wires is more advantageous for carrying alternating current.

[0066] Figure 1 A schematic diagram of an atomizer 100 according to an embodiment is shown, and the atomizer 100 according to the embodiment comprises:

[0067] main housing 10;

[0068] The partition wall 11 extends in the main housing 10 along the longitudinal direction of the atomizer 100; and the partition wall 11 and the main housing 10 are integrally molded, for example, molded from a polymer, ceramic or other material; and the partition wall 11 extends to or terminates at the air outlet 111. And a liquid storage chamber 12 is defined between the partition wall 11 and the main housing 10 for storing a liquid aerosol generating matrix. And, the partition wall 11 surrounds and defines an aerosol output channel located in the main housing 10 for outputting the aerosol to the air outlet 111 during inhalation.

[0069] The atomizer 100 further comprises:

[0070] Atomizing assembly, used for atomizing a liquid aerosol-generating matrix to generate an aerosol; Figure 1 In the atomization assembly, the atomization assembly includes:

[0071] The susceptor 30 is used to heat the liquid aerosol-generating substrate to generate an aerosol;

[0072] 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.

[0073] exist Figure 1 In the illustrated embodiment, the liquid-conducting element 20 is configured to be located within the partition wall 11; and the liquid-conducting element 20 is configured to be a hollow cylinder extending in the longitudinal direction. 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 a 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 in the liquid storage chamber 12 through the perforations. The inner surface of the liquid-conducting element 20 is configured as an atomizing surface; the receptor 30 is combined with the inner surface of the liquid-conducting element 20 to heat at least part of the liquid aerosol-generating matrix in the liquid-conducting element 20 to generate an aerosol.

[0074] In some other embodiments, the liquid-conducting element 20 may also be configured to have various regular or irregular shapes, and partially be in fluid communication with the liquid storage chamber 12 to receive the liquid aerosol-generating substrate. Alternatively, in other variations, the liquid-conducting element 20 may have more regular or irregular shapes, such as a polygonal block, a groove shape with grooves on the surface, or an arch shape with a hollow channel inside.

[0075] Or in some other variations, the susceptor 30 may be combined with the liquid-conducting element 20 by printing, deposition, sintering or physical assembly. In some other variations, the liquid-conducting element 20 may have a plane or a curved surface for supporting the susceptor 30, and the susceptor 30 is formed on the plane or the curved surface of the liquid-conducting element 20 of the porous body by mounting, printing, deposition or the like.

[0076] exist Figure 1 In the illustrated embodiment, the susceptor 30 is an induction heating element that can be penetrated by a changing magnetic field and generate heat. The susceptor 30 is made of a metal or alloy having sensitivity. For example, the susceptor 30 can be made of grade 430 stainless steel (SS430), and can also be made of grade 420 stainless steel (SS420), and alloy materials containing iron and nickel (such as Permalloy). And in some specific embodiments, the susceptor 30 has a length of 2 mm to 10 mm; and the susceptor 30 has an inner diameter of 1.5 mm to 8 mm; and the partition wall thickness of the susceptor 30 is between 0.05 mm and 0.2 mm. For example, in some specific embodiments, the susceptor 30 has a length of 4 mm to 8 mm. According to Figure 1 As shown, the susceptor 30 is in the shape of a tube which is closed in the circumferential direction; and the susceptor 30 is a mesh structure having a plurality of holes arranged in an array for releasing aerosol.

[0077] Or in some other variations, the sensor 30 may be configured in a solenoid shape, or a more cylindrical shape.

[0078] exist Figure 1 In the illustrated embodiment, the induction coil 260 has an extension length of 6 to 15 mm; and the induction coil 260 has approximately 6 to 12 turns; the length of the susceptor 30 is less than the length of the induction coil 260; and when the atomizer 100 is received in the receiving chamber 270, the susceptor 30 is substantially completely located within the induction coil 260.

[0079] Figure 2 FIG. 2 is a schematic diagram of a circuit 220 in one embodiment. In the embodiment, the circuit 220 includes:

[0080] LC oscillator 222, formed by connecting an induction coil 260 to a capacitor;

[0081] The bridge 223 is connected between the LC oscillator 222 and the battery cell 210 to drive the LC oscillator 222 to oscillate, thereby forming an alternating current flowing through the induction coil 260 .

[0082] Figure 3 A schematic diagram of the basic components of a circuit 220 of a specific embodiment is shown. Figure 3The LC oscillator 222 is an LC oscillator having two symmetrical bridge arms; Figure 3 In the embodiment, the LC oscillator 222 comprises:

[0083] Capacitors C1 and 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 via 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.

[0084] exist Figure 3 In the embodiment, bridge 223 is a half bridge matched to a symmetrical LC oscillator 222; Figure 3 In the embodiment, the bridge 223, for example a half bridge, includes a switch tube Q1 and a switch tube Q2 connected in series; Figure 3 In the connection, the first end of the switch tube Q1 is connected to the positive electrode of the battery cell 210, and the second end is connected to the first end of the induction coil 260; the first end of the switch tube Q2 is connected to the first end of the induction coil 260, and the second end is connected to the negative electrode of the battery cell 210 through grounding. And, the on and off of the switch tubes Q1 and Q2 are controlled by the PWM control signal modulated by the MCU controller 224. Or in some other common variations, the bridge 223 can also use a full bridge or H bridge including four switch tubes.

[0085] exist Figure 3 In the embodiment, the MCU controller 224 drives the LC oscillator 222 to oscillate by controlling the switch tube Q1 and the switch tube Q2 to be alternately turned on and off, thereby forming an alternating current flowing through the induction coil 260, so that the induction coil 260 generates a changing magnetic field to induce the receptor 30 to heat and form an aerosol.

[0086] Or in some other variations, the LC oscillator 222 may also be an asymmetric half-bridge LC oscillator 222 consisting of only one capacitor C2 connected in series with the induction coil 260 , and only having one oscillation bridge arm consisting of the capacitor C2 and the induction coil 260 connected in series.

[0087] In some embodiments, when the airflow sensor 250 senses the user's inhalation, the MCU controller 224 modulates the PWM control signal to turn on and off the switch tube Q1 and the switch tube Q2 alternately, 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.

[0088] In one embodiment of the present application, it is also proposed to control the provision of a predetermined energy to the LC oscillator 222 or the 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, so that the induction coil 260 and the susceptor 30 both have an equivalent impedance change in the circuit 220; and when the predetermined energy is provided to the LC oscillator 222 within a predetermined time, for example, 100 ms, the amplitude Vmax of the resonant voltage of the LC oscillator 222 presents Figure 4 When the susceptor 30 heats the liquid aerosol-generating matrix with different components or unique properties, the amplitude Vmax of the resonant voltage of the LC oscillator 222 decreases to different degrees.

[0089] In an embodiment, the predetermined energy provided to the LC oscillator 222 is controlled by controlling the total on-time of the switch tubes Q1 and Q2 in the bridge 223. Specifically, the energy provided to the LC oscillator 222 can be calculated and controlled to be maintained at the predetermined energy through the total on-time of the switch tubes Q1 and Q2 in the bridge 223 and the output voltage of the battery cell 210.

[0090] In an embodiment, the MCU controller 224 determines the unique properties of the liquid aerosol generating substrate by providing 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 change amount or change rate within the predetermined time.

[0091] 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.

[0092] 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.

[0093] For example, in some specific implementations, the unique properties of the liquid aerosol generating substrate may include an optimal vaporization power or vaporization temperature of the liquid aerosol generating substrate.

[0094] For example, in some specific implementations, the unique properties of the above liquid aerosol-generating substrate may include the strength of nicotine contained in the liquid aerosol-generating substrate, such as the nicotine content.

[0095] In some embodiments, during the process of detecting the unique properties of the liquid aerosol generating matrix, a predetermined energy value is provided to the LC oscillator 222 within a predetermined time, such as 100ms, and a relatively large energy, such as an energy provided to the receptor 30 for a duration greater than the same predetermined time during the puffing process, can be used to increase the amplitude change of the resonant voltage, making it easier for the MCU controller 224 to detect and analyze. For example, in some specific embodiments, during the puffing process, the MCU controller 224 controls the energy to be provided to the receptor 30 at 11.6667J / s; and further during the detection process, the MCU controller 224 controls the predetermined energy of about 1.5J to 3J to be provided to the receptor 30 within a predetermined time, such as 100ms, so that the MCU controller 224 can detect and analyze the amplitude change of the resonant voltage more easily.

[0096] 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.

[0097] In some specific embodiments, the predetermined energy provided to the susceptor 30 within the predetermined time is performed by the MCU controller 224 controlling the power output to the LC oscillator 222 through the bridge 223. Specifically, the energy provided to the susceptor 30 is related to the magnetic field generated by the induction coil 260, and further, the magnetic field generated by the induction coil 260 is determined by the power output from the battery cell 210 to the LC oscillator 222 through the bridge 223; and in implementation, the MCU controller 224 controls the power output from the battery cell 210 to the LC oscillator 222 through the bridge 223 to achieve the predetermined energy provided to the susceptor 30 within the predetermined time.

[0098] In order to enable the MCU controller 224 to accurately sample and analyze the changes in the resonant voltage of the LC oscillator 222, according to Figure 2 and Figure 3 As shown, the circuit 220 further includes:

[0099] 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 .

[0100] exist Figure 3 As shown in , the shaping module 221 is connected to the second end of the induction coil 260 of the LC oscillator 222; Figure 5The figure shows the voltage waveform of 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, only the waveform of the resonant voltage of the LC oscillator 222 in half a cycle can be obtained. Of course, the technician can also connect the shaping module 221 to the first end of the induction coil 260 to obtain the waveform of the other half cycle of the resonant voltage of the LC oscillator 222.

[0101] Specifically according to Figure 3 As shown in , the shaping module 221 includes a filtering voltage dividing unit 2211 and an integrating unit 2212. Wherein:

[0102] The filtering voltage division unit 2211 is connected to the second end of the induction coil 260 to filter and divide the resonant voltage of the LC oscillator 222. Specifically, the filtering voltage division unit 2211 includes a filter capacitor C3, a voltage division resistor R1 and a voltage division resistor R2 connected in series, and a filter capacitor C4 connected in parallel; Figure 3 In the example, the resonant voltage of the LC oscillator 222 is filtered by the series-connected filter capacitor C3, divided and amplified by the voltage-dividing resistors R1 and R2, and then filtered by the filter capacitor C4 before output. The voltage-dividing resistors R1 and R2 mainly reduce the voltage value of about 30 to 50 volts to a range of about 0.05 to 5 volts to prevent the signal strength from exceeding the sampleable range of the conventional I / O interface and failing to be sampled or burning the I / O interface.

[0103] The integration unit 2212 is used to integrate and shape the output signal of the filter voltage divider unit 2211; Figure 3 As shown in , the integration unit 2212 is a common passive RC integration circuit, including a capacitor C5, a resistor R3 and a resistor R4. In some other embodiments, the integration unit 2212 can also use a common active integration circuit or an integration operation chip. The voltage shaping signal Vout output after shaping by the integration unit 2212 is the integral of the output voltage of the filtering voltage divider unit 2211 over time.

[0104] exist Figure 3 In order to prevent the voltage of the integration unit 2212 from being reversely output 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.

[0105] Figure 6 It is shown in Figure 5 A schematic diagram of a voltage shaping signal Vout outputted after filtering and shaping the voltage waveform of the resonant voltage of the LC oscillator 222 of a half cycle obtained via the second end of the induction coil 260 via the shaping module 221; according to Figure 6 As shown, after filtering, voltage division, and integration shaping by the shaping module 221, the voltage shaping signal Vout has a voltage waveform showing a downward trend. Then, the MCU controller 224 can monitor or determine the change amount or change rate of the amplitude of the resonant voltage of the LC oscillator 222 by sampling the voltage shaping signal Vout output by the shaping module 221.

[0106] The signal value of the voltage shaped signal Vout of the resonant voltage shaped by the shaping module 221 is between about 0.05V and 5V, which is advantageous for the I / O interface of the MCU controller 224 to be able to sample and acquire. Compared with the original resonant voltage of up to 30V to 50V directly sampled by the I / O interface of the MCU controller 224, the signal value of the voltage shaped signal Vout after sampling and shaping will not burn the I / O interface or the MCU controller 224 due to excessive voltage. At the same time, the voltage shaped signal Vout of the resonant voltage after shaping is more suitable for sampling analysis and comparative calculation.

[0107] For example Figure 7 FIG. 2 shows the connection of the sampling signal Vout obtained by sampling the voltage shaping signal Vout by the MCU controller 224 at a sampling frequency of 0.25 ms / time, and the sampling signal Vout displayed on the oscilloscope. 采样 Schematic diagram of Figure 7 The oscilloscope shown shows the sampled signal V 采样 It can be seen that the sampling signal obtained by the MCU controller 224 sampling the voltage shaping signal Vout at a sampling frequency of 0.25 ms / time jumps relatively discretely.

[0108] In this embodiment, in order to eliminate the sampling error and the background noise in the sampling process of the MCU controller 224, and based on the waveform of the voltage shaping signal Vout showing a decreasing trend and the need to analyze the decreasing amplitude, the MCU controller 224 is configured to perform sampling on the sampling signal Vout. 采样 Perform minimum value filtering; further Figure 7 The filtered signal V generated after the minimum value filtering process is shown in 滤波 Schematic diagram of the filtered signal V after minimum filtering 滤波 The waveform that can characterize the resonant voltage drop.

[0109] Or in some alternative embodiments, the MCU controller 224 may also use mean filtering, Kalman filtering, particle filtering or non-recursive FR filtering to filter the sampling signal V 采样 Filter to obtain the sampled signal V 采样 The filtered signal V has smaller jumps and more stable signals 滤波 .

[0110] In the embodiment, when the sensor 30 atomizes a liquid aerosol with different unique properties such as vaporization efficiency, vaporization temperature, viscosity, specific heat, etc., it is reflected in the circuit 220 as having different equivalent impedances. Accordingly, the amplitude drop of the resonant voltage of the LC oscillator 222 monitored within a predetermined time is different, and the difference in the drop degree will also be reflected in the filter signal V 滤波 For example, Figure 8 FIG. 2 shows the filtered signals V obtained by the MCU controller 224 by monitoring the resonant voltage of the LC oscillator 222 when the liquid storage chamber 12 is filled with two different liquid aerosol generating matrices. 滤波 A comparison diagram of .

[0111] Among them, Figure 8 The liquid aerosol-generating matrix corresponding to the middle curve S1 contains about 50% propylene glycol and 50% vegetable glycerin; the liquid aerosol-generating matrix corresponding to the curve S2 contains about 40% propylene glycol and 60% vegetable glycerin, thus having a relatively higher viscosity and a higher specific heat capacity. Figure 8 Their filtered signals V are shown 滤波 It can be seen from the comparison that within the same predetermined time t1, curve S2 has a greater amplitude drop of the resonant voltage, for example Figure 8 The voltage value of curve S1 decreases from V0 to V1, while the voltage of curve S2 decreases from V0 to V2 which is lower than V1. Figure 8 As shown, by analyzing the filtered signal V of the resonant voltage after filtering 滤波 , for the MCU controller 224 to sample, analyze and identify the unique properties of the liquid aerosol generating matrix easily and accurately.

[0112] based on Figure 8 The MCU controller 224 is configured to monitor the filtered signal V based on the resonant voltage of the LC oscillator 222 to determine the different decreases in the resonant voltage of the LC oscillator 222 caused by the different unique properties of the liquid aerosol generating matrix shown in FIG. 滤波 The voltage change amount or change rate can determine the unique property of the liquid aerosol generating substrate on the susceptor 30. And, the MCU controller 224 is configured to control the induction coil 260 to generate a magnetic field at a suitable power to atomize the liquid aerosol generating substrate at a suitable power when the unique property of the liquid aerosol generating substrate is determined.

[0113] 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.

[0114] Alternatively, in some other embodiments, the MCU controller 224 is configured to monitor the filtered signal V of the resonant voltage of the LC oscillator 222. 滤波 The signal value voltage exceeds a preset threshold, determining the unique properties of the liquid aerosol generating matrix.

[0115] Alternatively, in some other embodiments, the MCU controller 224 is configured to determine the unique properties 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.

[0116] 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 shaping signal Vout of the resonant voltage of the LC oscillator 222, the degree of decrease, the amount of change, the rate of change, etc.

[0117] Or in some other embodiments, the resonant current of the LC oscillator 222 is related to the resonant voltage; 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. In some other embodiments, the MCU controller 224 is configured to monitor and analyze the changes in the resonant current of the LC oscillator 222 by shaping and sampling to determine the unique properties of the liquid aerosol generating substrate on the susceptor 30.

[0118] In an optional embodiment, the MCU controller 224 is configured to control the LC oscillator 222 to provide a predetermined energy to determine the "unique properties" of the liquid aerosol generating substrate when the airflow sensor 250 senses the user's puffing. For example, in a specific embodiment, the airflow sensor 250 senses that the duration of the user's puffing action is 3 seconds, and the MCU controller 224 controls the LC oscillator 222 to provide a predetermined energy as a predetermined time in the initial 0.1 second to determine the "unique properties" of the liquid aerosol generating substrate, and then controls the liquid aerosol generating substrate to be atomized according to the determined unique properties of the liquid aerosol generating substrate in the remaining 2.9 seconds.

[0119] 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 the output power during subsequent inhalation to control the atomization of the liquid aerosol generating matrix at an appropriate power.

[0120] 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 atomizer 100 in the receiving chamber 270 or when the atomizer 100 is reinserted into the receiving chamber 270, so as to serve as a reference for the output power during subsequent inhalation to control the atomization of the liquid aerosol generating matrix at an appropriate power.

[0121] It should be noted that the preferred embodiments of the present application are given in the specification and drawings of the present application, but are not limited to the embodiments described in the specification. Furthermore, it is possible for a person of ordinary skill in the art to make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to 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 process by the shaping module.

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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