Aerosol generating device

Abstract

An aerosol generating device (100). The aerosol generating device (100) comprises an ion generator (20) and a heating control device (10); the heating control device (10) comprises a power supply module (11), a control drive module (12), a boost adjustment module (13), an inverter conversion module (14), and a boost transformer (15); the control drive module (12) is connected to the power supply module (11), and the control drive module (12) can generate a plurality of drive signals on the basis of a mapping relationship between the heating time and power; the boost adjustment module (13) is connected to the power supply module (11) and the control drive module (12), and is configured to generate a plurality of direct current output voltages on the basis of a power supply voltage and the plurality of drive signals; the inverter conversion module (14) is connected to the boost adjustment module (13), and is configured to generate alternating current output voltages on the basis of the direct current output voltages; and the boost transformer (15) is connected to the inverter conversion module (14) and the ion generator (20), and is configured to generate a heating voltage on the basis of the alternating current output voltages and provide the heating voltage to the ion generator (20), so as to drive the ion generator (20) to generate plasma and generate heat for heating an aerosol generating article.

Description

Aerosol generating apparatus

[0001] Priority information

[0002] The present application claims priority to and the benefit of the filing date of Chinese Patent Application No. 202410986271.2, filed on July 22, 2024, and is hereby incorporated by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the field of atomization technology, in particular to an aerosol generating apparatus. BACKGROUND

[0004] An aerosol generating device is a small device configured to generate an aerosol using a heat-not-burning (HNB) technique.

[0005] At present, most of the heat-not-burning type heating apparatuses on the market mainly use plasma discharge arc starting technology to achieve heating. The plasma discharge arc starting technology mainly includes contact arc starting and high-voltage arc starting. The contact arc starting is to form an electric current by contacting two electrodes and then to form an electric arc by pulling away the distance. However, this arc starting method needs the intervention of mechanical action, which is not conducive to the miniaturization design of the HNB heating apparatus, and the structure is relatively complex. The high-voltage arc starting is to apply high-voltage electricity between two electrodes to establish a discharge channel between the electrodes. The high-voltage arc starting is a method of using a very high-voltage power supply to start arc and connecting high-voltage power supply in series and parallel. That is, the very high-voltage power supply exits the mechanism after starting arc. However, this arc discharge method has high cost, and has problems such as poor arc discharge continuity, complex control logic, etc. SUMMARY

[0006] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application needs to provide an aerosol generating apparatus.

[0007] The aerosol generating apparatus of the present application embodiment comprises a plasma generator and a heating control device, wherein the heating control device comprises a power supply module, a control driving module, a boost regulation module, an inverter conversion module and a boost transformer.

[0008] The control driving module is electrically connected with the power supply module, and the control driving module can generate a plurality of driving signals according to a heating time-power mapping relationship.

[0009] The boost regulating module is electrically connected with the power supply module and the control driving module respectively, and is configured to generate a direct current output voltage according to the power supply voltage of the power supply module and the driving signal, the direct current output voltage includes multiple types, and different direct current output voltages have different sizes, each type of the direct current output voltage corresponds to one type of the driving signal;

[0010] The inverter conversion module is electrically connected with the boost regulating module, and is configured to generate an alternating current output voltage according to the direct current output voltage;

[0011] The boost transformer is electrically connected with the inverter conversion module and the plasma generator, and is configured to generate a heating voltage according to the alternating current output voltage and provide the heating voltage to the plasma generator, drive the plasma generator to generate plasma and heat, and heat the aerosol generating article.

[0012] In some embodiments, the control driving module includes:

[0013] A control unit capable of generating a plurality of reference voltages according to a heating time-power mapping relationship;

[0014] A driving unit electrically connected with the control unit and configured to generate the driving signal according to the reference voltages.

[0015] In some embodiments, the control unit is capable of determining an output power according to a heating time-power mapping relationship of a preheating phase, and calculating the reference voltages according to the output power; or

[0016] determining an output power according to a heating time-power mapping relationship of a holding phase, and calculating the reference voltages according to the output power.

[0017] In some embodiments, the heating control device further includes a data acquisition unit electrically connected with the boost regulating module to be configured to acquire a direct current output voltage output by the boost regulating module, and the driving unit is further configured to generate the driving signal according to the reference voltages and the direct current output voltage.

[0018] In some embodiments, the plasma generator includes:

[0019] A heating member having a heating cavity formed inside; and

[0020] At least one set of electrode assemblies, each set of the electrode assemblies including a first electrode and a second electrode, the first electrode and the second electrode both extending into the heating cavity, and an electric arc being controllably formed between the first electrode and the second electrode in the heating cavity to generate plasma;

[0021] The heating element is capable of forming a receiving position for receiving the aerosol generating substrate.

[0022] In some embodiments, the plasma generator comprises:

[0023] a first electrode;

[0024] a second electrode;

[0025] an inner tube, the first electrode is at least partially disposed in the inner tube; at least part of the second electrode is disposed at one end of the inner tube and is oppositely and spacedly disposed from the first electrode;

[0026] an outer tube, the outer tube is sleeved outside the inner tube; when the first electrode and the second electrode are energized, plasma is generated between the second electrode and the first electrode;

[0027] a conductive member, the conductive member is connected to the second electrode and is used for electrically connecting the step-up transformer, the conductive member extends from one end of the inner tube to the other end of the inner tube along the axial direction of the inner tube, wherein the tube segment of the inner tube corresponding to the conductive member partially faces the outer tube.

[0028] In some embodiments, the driving unit comprises:

[0029] a comparison circuit, connected to the control unit and the data acquisition unit respectively, configured to generate a comparison signal according to the direct current output voltage and the reference voltage;

[0030] a signal output circuit, connected to the comparison circuit and the step-up regulation module, configured to generate the driving signal according to the comparison signal.

[0031] In some embodiments, the comparison circuit comprises:

[0032] an operational amplifier, comprising a first input end, a second input end and an output end, the first input end is connected to the control unit, and the output end is connected to the signal output circuit;

[0033] a first voltage dividing resistor, one end of the first voltage dividing resistor is connected to the data acquisition unit, and the other end of the first voltage dividing resistor is connected to the second input end;

[0034] a second voltage dividing resistor, one end of the second voltage dividing resistor is connected to the first voltage dividing resistor, and the other end of the second voltage dividing resistor is connected to a ground end.

[0035] In some embodiments, the signal output circuit comprises:

[0036] A power management chip connected to the output of the operational amplifier and the boost regulation module respectively, configured to generate the driving signal according to the comparison signal output by the output of the operational amplifier.

[0037] In some embodiments, the boost regulation module comprises a boost chopper circuit or a buck-boost circuit.

[0038] In some embodiments, the power module comprises a positive terminal and a negative terminal, the boost chopper circuit comprises a first inductor, a first driving transistor, a first diode, a plurality of input capacitors and a plurality of first output capacitors;

[0039] One end of the first inductor is connected to the positive terminal of the power module, and the other end of the first inductor is connected to the positive terminal of the first diode;

[0040] The first pole of the first driving transistor is connected to the inductor and the positive terminal of the first diode, the second pole of the first driving transistor is connected to the negative terminal of the power module, and the control pole of the first driving transistor is connected to the control driving module;

[0041] The negative terminal of the first diode is connected to the inverter conversion module;

[0042] One end of the input capacitor is connected to the positive terminal of the power module, and the other end of the input capacitor is connected to the negative terminal of the power module;

[0043] One end of the first output capacitor is connected to the negative terminal of the first diode, and the other end of the first input capacitor is connected to the negative terminal of the power module.

[0044] In some embodiments, the power module comprises a positive terminal and a negative terminal, the buck-boost circuit comprises a second driving transistor, a third driving transistor, a second inductor, a second diode and a second output capacitor;

[0045] The first pole of the second driving transistor is connected to the positive terminal of the power module, and the control pole of the second driving transistor is connected to the control driving module;

[0046] The first pole of the third driving transistor is connected to the second pole of the second driving transistor, the second pole of the third driving transistor is connected to the inverter conversion module, and the control pole of the third driving transistor is connected to the control driving module;

[0047] One end of the second inductor is connected to the negative terminal of the power module;

[0048] The positive terminal of the second diode is connected to the other end of the second inductor, and the negative terminal of the second diode is connected to the second pole of the third driving transistor.

[0049] One end of the second output capacitor is connected to the second electrode of the third driving transistor, and the other end of the second output capacitor is connected to the negative electrode end of the power module.

[0050] In some embodiments, the inversion conversion module comprises a half-bridge circuit or a full-bridge circuit.

[0051] In some embodiments, the half-bridge circuit comprises:

[0052] an upper transistor, a first electrode of the upper transistor being connected to the boost regulating module, a second electrode of the upper transistor being connected to the boost transformer, and a control electrode of the upper transistor being connected to the control driving module;

[0053] a lower transistor, a first electrode of the lower transistor being connected to the boost regulating module, a second electrode of the lower transistor being connected to the boost transformer, and a control electrode of the upper transistor being connected to the control driving module;

[0054] a first filter resistor, one end of the first filter resistor being connected to the first electrode of the upper transistor, and the other end of the first filter resistor being connected to the second electrode of the upper transistor;

[0055] a second filter resistor, one end of the second filter resistor being connected to the first electrode of the lower transistor, and the other end of the second filter resistor being connected to the second electrode of the lower transistor;

[0056] a first filter capacitor, one end of the first filter capacitor being connected to the first electrode of the upper transistor, and the other end of the second filter capacitor being connected to the second electrode of the upper transistor;

[0057] a second filter capacitor, one end of the second filter capacitor being connected to the first electrode of the lower transistor, and the other end of the second filter capacitor being connected to the second electrode of the lower transistor.

[0058] In some embodiments, the full-bridge circuit comprises:

[0059] a first switch tube, a first electrode of the first switch tube being connected to the boost regulating module, and a control electrode of the first switch tube being connected to the control driving module;

[0060] a second switch tube, a first electrode of the second switch tube being connected to the boost regulating module, a second electrode of the second switch tube being connected to the boost transformer, and a control electrode of the second switch tube being connected to the control driving module;

[0061] a third switch tube, a first electrode of the third switch tube being connected to the boost regulating module, and a control electrode of the third switch tube being connected to the control driving module;

[0062] a fourth switch tube, a first pole of the fourth switch tube is connected with the boost regulating module, a second pole of the fourth switch tube is connected with the boost transformer, and a control pole of the fourth switch tube is connected with the control driving module;

[0063] a load capacitor, one end of the load capacitor is connected with the third poles of the first switch tube and the third switch tube, and the other end of the load capacitor is connected with the boost transformer.

[0064] The aerosol generating device of the embodiment of the present application comprises the heating control device and the plasma generator.

[0065] In the heating control device and the aerosol generating device of the embodiment of the present application, the control driving module, the boost regulating module, the inverter conversion module and the boost transformer are arranged, the boost regulating module, the inverter conversion module and the boost transformer are connected in sequence, the boost regulating module is electrically connected with the power module and the control driving module, and the boost transformer is electrically connected with the plasma generator. The boost regulating module can output direct current output voltages with different sizes under the driving of the driving signal of the control driving module. Then, the direct current output voltages with different sizes can be converted into heating voltages with different sizes and alternating currents through the inverter conversion module and the boost transformer, and the heating voltages are provided to the plasma generator. The plasma generator can realize arc striking and discharging, and the aerosol generating article can be heated to a temperature at which volatile components capable of forming aerosols can be released. Moreover, the heating control device changes the direct current output voltages by changing the driving signal of the control driving module, and then changes the heating voltages. On the one hand, arc striking and discharging can be continuously adjusted, the aerosol generating device can be stably heated, the power of the aerosol generating device can be easily adjusted, and good taste can be achieved. On the other hand, only one power module is needed to realize arc striking and discharging of the plasma generator, the design is simple, the cost of the aerosol generating device is reduced, and the aerosol generating device is miniaturized.

[0066] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0067] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings.

[0068] FIG. 1 is a schematic diagram of a module of an aerosol generating device according to an embodiment of the present application.

[0069] FIG. 2 is another schematic diagram of a module of an aerosol generating device according to an embodiment of the present application.

[0070] FIG. 3 is a heating time-power mapping table according to an embodiment of the present application.

[0071] FIG. 4 is a power-time relationship diagram according to an embodiment of the present application.

[0072] FIG. 5 is a circuit diagram of a comparison circuit according to an embodiment of the present application.

[0073] FIG. 6 is a circuit diagram of a signal output circuit according to an embodiment of the present application.

[0074] FIG. 7 is a circuit diagram of a boost regulation module and an inverter conversion module according to an embodiment of the present application.

[0075] FIG. 8 is another circuit diagram of a boost regulation module and an inverter conversion module according to an embodiment of the present application.

[0076] FIG. 9 is a sectional view of an ion generator according to an embodiment of the present application.

[0077] FIG. 10 is a structural diagram of a heating element according to an embodiment of the present application.

[0078] FIG. 11 is a sectional view of the ion generator of FIG. 10 along the A-A direction.

[0079] FIG. 12 is an exploded structural diagram of the ion generator of FIG. 10.

[0080] Main component symbol explanation: aerosol generating device 100, heating control device 10, power supply module 11, battery 111, positive terminal BAT+, negative terminal BAT-, auxiliary power supply unit 112, protection and charging unit 113, control driving module 12, control unit 121, driving unit 122, comparison circuit 1221, operational amplifier U1, first voltage dividing resistor R1, second voltage dividing resistor R2, signal output circuit 1222, power management chip U2, boost regulation module 13, first inductor L1, first driving transistor Q1, first diode D21, input capacitor C21, first output capacitor C22, second driving transistor Q11, third driving transistor Q12, second diode D31, second inductor L2, second output capacitor C31, inverter conversion module 14, upper transistor Q2, lower transistor Q3, first filter resistor R24, second filter resistor R25, first filter capacitor C23, second filter capacitor C2, first switch Q13, second switch Q14, third switch Q15, fourth switch Q16, load capacitor C32, boost transformer 15, data acquisition module 16, communication module 17, peripheral module 18, ion generator 20, heating element 21, heating cavity 211, accommodating site 212, inner tube 201, outer tube 202, conductive member 203, electrode assembly 22, first electrode 221, second electrode 222, discharge region 223. DETAILED DESCRIPTION

[0081] Embodiments of the present application are described below in detail with reference to the accompanying drawings, wherein the same or similar components are denoted by the same or similar reference numerals, and thus repeated description is omitted. The embodiments described below are examples for explaining the present application, and are not intended to be limiting of the present application.

[0082] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like are based on the orientations or positional relationships shown in the drawings, and are merely intended to facilitate the description of the present application and simplify the description, and thus cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and thus cannot be understood as limiting the present application. In addition, the terms "first", "second", are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0083] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection or can communicate with each other; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0084] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "above", "over", and "on" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The "below", "under", and "under" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0085] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplifying the present application, the components and arrangements of the specific examples are described in the following. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application can repeatedly refer to reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, which does not indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art can realize the application of other processes and / or the use of other materials.

[0086] Tobacco products, such as cigarettes, cigars, and the like, burn tobacco during use to produce tobacco smoke. Attempts have been made to provide alternatives to these burning tobacco products by manufacturing products that release compounds without burning. An example of such a product is an aerosol-generating device, such as an electronic atomizer, which releases compounds by heating rather than burning the material, i.e., using a heat-not-burn (HNB) technology. For example, the material can be an aerosol-generating article that contains tobacco or other non-tobacco products, which can or can not contain nicotine. In order to heat the aerosol-generating article to a temperature at which volatile components that can form an aerosol are released, the aerosol-generating device typically heats the aerosol-generating article by a heating assembly.

[0087] At present, most of the heating components of the heat-not-burn type on the market mainly use plasma discharge arc starting technology to achieve heating. The plasma discharge arc starting technology mainly includes contact arc starting and high-voltage arc starting. The contact arc starting is to form an electric current by contacting two electrodes and then to form an electric arc by pulling away the distance, however, this arc starting method needs the intervention of mechanical action, which is not conducive to the miniaturization design of the HNB aerosol-generating device, and the structure is relatively complex. The high-voltage arc starting is to apply high-voltage electricity between two electrodes to establish a discharge channel between the electrodes. The high-voltage arc starting is a method of using extra-high-voltage power supply arc starting and high-voltage power supply discharge in series and parallel, that is, the extra-high-voltage power supply exits the mechanism after arc starting. However, this arc discharge method has high cost, and has problems such as poor arc discharge continuity, complex control logic, etc.

[0088] Therefore, the embodiments of the present application provide an aerosol-generating device 100. The aerosol-generating device 100 comprises a plasma generator 20 and a heating control device 10, the heating control device 10 is electrically connected with the plasma generator 20, and is configured to provide a heating voltage to the plasma generator 20, so that the plasma generator 20 provides plasma to an aerosol-generating article, thereby heating the aerosol-generating article.

[0089] The heating control device 10 comprises a power supply module 11, a control driving module 12, a boost regulating module 13, an inverter conversion module 14 and a boost transformer 15. The control driving module 12 is electrically connected with the power supply module 11, and the control driving module 12 can generate a plurality of driving signals according to a heating time-power mapping relationship. The boost regulating module 13 is electrically connected with the power supply module 11 and the control driving module 12, and is configured to generate a direct current output voltage according to the power supply voltage of the power supply module 11 and the driving signal, wherein the direct current output voltage comprises a plurality of types, and each type of the direct current output voltage corresponds to one type of the driving signal; the inverter conversion module 14 is electrically connected with the boost regulating module 13, and the inverter conversion module 14 is configured to generate an alternating current output voltage according to the direct current output voltage; and the boost transformer 15 is electrically connected with the inverter conversion module 14 and the plasma, and the boost transformer 15 is configured to generate a heating voltage according to the alternating current output voltage and provide the heating voltage to the plasma, so that the plasma realizes an arc striking or discharging function.

[0090] In the aerosol generating device 100 and the heating control device 10 in the embodiments of the present application, the control driving module 12, the boost regulating module 13, the inverter conversion module 14 and the boost transformer 15 are provided, wherein the boost regulating module 13, the inverter conversion module 14 and the boost transformer 15 are connected in sequence, the boost regulating module 13 is electrically connected with the power supply module 11 and the control driving module 12, and the boost transformer 15 is electrically connected with the plasma generator 20. The control driving module 13 can generate a plurality of driving signals according to a heating time-power mapping relationship, so that the boost regulating module 13 can output direct current output voltages with different sizes under the driving of the driving signals of the control driving module 12. Then, the direct current output voltages with different sizes can be converted into heating voltages with different sizes and alternating currents through the inverter conversion module 14 and the boost transformer 15, and the heating voltages are provided to the plasma generator 20, so that the plasma generator 20 can realize arc striking and discharging, and the aerosol generating article can be heated to a temperature at which volatile components capable of forming aerosols can be released. Moreover, the heating control device 10 changes the sizes of the direct current output voltages by changing the driving signals of the control driving module 12, so as to change the sizes of the heating voltages. On the one hand, arc striking and discharging can be continuously adjusted, the aerosol generating device 100 can be stably heated, and the power of the aerosol generating device 100 can be easily adjusted, so that a good taste can be achieved. On the other hand, the heating control device only needs to provide one power supply module 11 to realize arc striking and discharging of the plasma generator 20, the design is simple, the cost of the aerosol generating device 100 is reduced, and the aerosol generating device 100 is miniaturized.

[0091] Specifically, the aerosol generating device 100 can be implemented using a heat-not-burn (HNB) technique. The plasma generator 20 is configured to generate plasma and heat the aerosol generating article by the plasma. It should be noted that "plasma" is a physical term, which is a mixture including electrons, ions, atoms, and atomic groups when gas molecules are ionized when an applied voltage reaches a breakdown voltage.

[0092] In some examples, the plasma generator 20 can be a generator that generates plasma by applying a breakdown voltage to a gas to discharge the gas. The plasma generator 20 can be a dielectric barrier discharge (DBD) plasma generator 20, which is a kind of non-equilibrium gas discharge with an insulating medium inserted into a discharge space. The dielectric barrier discharge can work at high gas pressure and a wide frequency range, and is filled with a certain working gas between two discharge gases, and one or both electrodes are covered with an insulating medium. The medium can also be directly suspended in the discharge space or filled with granular medium, and when a high enough alternating voltage is applied between the two electrodes, the gas between the electrodes will be broken down to produce discharge and generate a dielectric barrier discharge. In some examples, the plasma generator can also be an atmospheric pressure glow discharge (APGD) plasma generator 20. The atmospheric pressure glow discharge plasma generator 20 is a plasma generator 20 with an open environment, air as the working gas, and atmospheric pressure as the working environment.

[0093] Further, referring to FIG. 9, the plasma generator 20 includes a heating element 21 and an electrode assembly 22, the heating element 21 has a heating cavity 211 formed inside, each set of the electrode assembly 22 includes a first electrode 221 and a second electrode 222, the first electrode 221 and the second electrode 222 both extend into the heating cavity 212, and an arc can be controlled to form between the first electrode 221 and the second electrode 222 in the heating cavity 211 to generate plasma. That is, the first electrode 221 and the second electrode 222 both extend into the heating cavity 211 of the heating element 21, an arc is generated by breakdown between the first electrode 221 and the second electrode 222 under alternating current or direct current power supply, and then the gas in the heating cavity 211 is ionized to form plasma, and the plasma heats the heating cavity 211. In addition, the heating element 21 has a receiving position 212 adjacent to the heating cavity 211, and the receiving position 212 is used to carry the aerosol generating substrate. After the heating cavity 211 is heated by the plasma, heat can be transferred to the adjacent receiving position 212, and then the aerosol generating substrate arranged on the receiving position 212 is heated.

[0094] It should be noted that, in the heating process, an arc needs to be formed between the first electrode 221 and the second electrode 222, so as to establish a discharge channel between the first electrode 221 and the second electrode 222. Generally, the striking voltage required for the arc striking of the plasma generator 20 is greater than the discharge voltage required for the continuous discharge, i.e., the striking voltage is greater than the discharge voltage, for example, the striking voltage is 8 kilovolts, and the discharge voltage is 2 kilovolts.

[0095] The first electrode 221 and the second electrode 222 can be connected to direct current or alternating current. In the case of applying direct current to the first electrode 221 and the second electrode 222, the first electrode 221 and the second electrode 222 form plasma by using direct current; in the case of applying alternating current to the first electrode 221 and the second electrode 222, the first electrode 221 and the second electrode 222 form plasma by using alternating current.

[0096] In this way, the heat generated by the plasma in the heating cavity 211 is used to quickly heat the aerosol generating substrate, and the high energy density characteristics of the plasma heating shorten the preheating waiting time, facilitate user use, and prevent the aerosol generating substrate from being burnt due to a too long preheating time, thereby improving the atomization taste. At the same time, the electrodes and other metal parts do not need to be directly in contact with the aerosol generating substrate during the heating process, which can prevent the aerosol generating substrate from being doped with metal substances after atomization, thereby further improving the atomization taste.

[0097] Please refer to FIGS. 10-12, in some embodiments, the plasma generator 20 includes an inner tube 201, an outer tube 202, and a conductive member 203, a first electrode 221 and a second electrode 222, the first electrode 221 is at least partially disposed in the inner tube 201, at least a portion of the second electrode 222 is disposed at one end of the inner tube 201 and is oppositely and spacedly arranged with the first electrode 221, and the plasma is generated between the second electrode 222 and the first electrode 221 when the first electrode 221 and the second electrode 222 are electrified; the outer tube 202 is sleeved outside the inner tube 201; the conductive member 203 is connected to the second electrode 222 and is used for electrically connecting with the step-up transformer, the conductive member 203 extends from one end of the inner tube 201 to the other end of the inner tube 201 along the axial direction of the inner tube 201, wherein the corresponding tube segment of the inner tube 201 and the conductive member 203 partially faces the outer tube 202.

[0098] It should be noted that the pipe section of the inner tube 201 corresponding to the conductive member 203 can be the part of the inner tube 201 between the two ends of the conductive member 203 in the axial direction of the conductive member 203, and the axial length of the pipe section of the inner tube 201 corresponding to the conductive member 203 and the conductive member 203 can be substantially equal, and the two ends are substantially aligned. In addition, it can also be understood that, in order to electrically connect the second electrode 222 and the step-up transformer 15, the conductive member 203 needs to be connected, but the second electrode 222 and the conductive member 203 are not necessarily two separate components, and the two can be made of the same material or integrally formed as a whole, and the part opposite to the first electrode 221 is used as an electrode, and the rest is used for electrical connection. In this application, the second electrode 222 and the conductive member 203 are described as two components, which cannot be used as a limitation of the whole and the separate, but for better description and explanation.

[0099] In the ionizer 20 of the embodiment of the present application, the pipe section of the inner tube 201 corresponding to the conductive member 203 partially faces the outer tube 202, reducing the volume of the conductive member 203, thereby reducing the heat capacity of the conductive member 203, so that the conductive member 203 stores less heat, and the heat generated by the ionizer 20 can be more directly radiated to the aerosol-forming substrate through the inner tube 201 and the outer tube 202, improving the heat utilization rate, and thereby improving the heating rate and heating efficiency of the aerosol-forming substrate.

[0100] The outer tube 202 is sleeved outside the inner tube 201 and wraps at least a part of the inner tube 201. The outer tube 202 can cover at least the discharge area in the inner tube 201. The aerosol-forming substrate fills the outer side of the outer tube 202. The outer surface of the outer tube 202 can be in direct contact with the aerosol-forming substrate. The heat generated by the plasma arc in the discharge area can be transmitted in the form of infrared radiation and heat transfer through the inner tube 201, the conductive member 203 and the outer tube 202 to the outside of the outer tube 202, so that the aerosol-forming substrate absorbs heat and forms an aerosol.

[0101] Please refer to FIG. 11. At least a part of the first electrode 221 is inserted into the hollow space in the center of the inner tube 201 along the axial direction of the inner tube 201 from one end of the inner tube 201. As shown in FIG. 11, the position of the first electrode 221 exposed from the inner tube 201 is marked as P. The second electrode 222 is arranged at the other end of the inner tube 201 and opposite to the part of the first electrode 221 inserted into the inner tube 201 through the hollow space of the inner tube 201.

[0102] The first electrode 221 is inserted into the inner tube 201 at a distance from the second electrode 222. For the convenience of description, in this application, the interval between the first electrode 221 and the second electrode 222 is called the discharge area 223. The discharge area 223 can be wrapped by the inner tube 201 and located in the hollow space of the inner tube 201.

[0103] Please continue to refer to FIG. 11, the first electrode 221 can be connected to the step-up transformer 15, and one pole of the high voltage is conducted; the second electrode 222 can be connected to the step-up transformer 15 through the conductive part 30, and the other pole of the high voltage is conducted. The first electrode 221 and the second electrode 222 conduct the high voltage, and the high voltage discharge in the discharge area 223 generates the plasma arc. In the center of the discharge area 223, the highest temperature when the plasma arc is generated can reach more than 2000℃, and the stable plasma temperature range can be 1000℃-1600℃. The discharge area 223 can be sealed and filled with electrically neutral gas, such as nitrogen, argon, etc. The discharge area 223 can also be communicated with the atmospheric pressure, at this time, the gas in the discharge area 223 is air.

[0104] It should be pointed out that the first electrode 221 and the second electrode 222 can be connected to direct current or alternating current. In the case of applying direct current to the first electrode 221 and the second electrode 222, the first electrode 221 and the second electrode 222 form plasma by using direct current; in the case of applying alternating current to the first electrode 221 and the second electrode 222, the first electrode 221 and the second electrode 222 form plasma by using alternating current.

[0105] The outer tube 202 can be a hollow tube body with one end closed and one end open. The inner tube 201 wraps at least part of the first electrode 221.

[0106] In some embodiments, the outer tube 202 is made of at least one of quartz and ceramic, so that the outer tube 202 can provide insulation protection and can transmit infrared radiation emitted by the discharge of the first electrode 221 and the second electrode 222 to heat the aerosol-forming substrate outside the outer tube 202.

[0107] In some embodiments, the wall thickness of the outer tube 202 ranges from 0.3mm to 0.5mm (including the end point value). The outer diameter of the outer tube 202 is D, and preferably 2.0mm≤D≤3.0mm. For example, the wall thickness of the outer tube 202 can be 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, etc., and the outer diameter of the outer tube 202 can be 2.0mm, 2.1mm, 2.3mm, 2.6mm, 2.8mm, 3mm, etc. The outer tube 202 can be a quartz tube with an outer diameter of 2.0mm and a wall thickness of 0.3mm. For another example, the outer tube 202 can be a quartz tube with an outer diameter of 3.0mm and a wall thickness of 0.4mm.

[0108] The conductive member 203 can be arranged on the inner tube 201 and extend along the axial direction of the inner tube 201 from one end of the inner tube 201 to the other end of the inner tube 201. The path of the conductive member 203 extending between the two ends of the inner tube 201 can be a straight line or a curved line. The outer wall of the portion of the inner tube 201 wrapped by the outer tube 202 faces the inner wall of the outer tube 202.

[0109] The conductive member 203 can be attached to the outer wall of the inner tube 201 and located between the outer wall of the inner tube 201 and the inner wall of the outer tube 202, covering part of the outer circumference of the inner tube 201. The portion of the inner tube 201 covered by the conductive member 203 cannot face or directly face the outer tube 202. In the area of the inner tube 201 blocked by the conductive member 203, the heat of the plasma arc can be transmitted to the aerosol-forming substrate through the inner tube 201, the conductive member 203 and the outer tube 202. The infrared radiation energy of this part is much less than that of the part not covered by the conductive member 203.

[0110] It can be understood that the conductive member 203 can be a metal member arranged on the outer wall of the inner tube 201. In other embodiments, the conductive member 203 can also be a conductive film or a conductive circuit coated on the outer wall of the inner tube 201, and its shape, thickness and arrangement position on the inner tube 201 can be understood as equivalent to the above-mentioned solutions.

[0111] The tube segment of the inner tube 201 corresponding to the conductive member 203 has at least part of the outer wall directly facing the inner wall of the outer tube 202, or in other words, the tube segment of the inner tube 201 corresponding to the conductive member 203 has part of the outer wall between which there is no other obstruction to the inner wall of the outer tube 202.

[0112] Please refer to FIG. 2, the power supply module 11 can include a battery 111, an auxiliary power supply unit 112 and a protection and charging unit 113. Among them, the battery 111 can be a rechargeable direct current battery 111, for example, it can be any one of a lithium ion battery, a nickel-cadmium battery, a nickel-iron battery or a nickel-hydrogen battery, etc., and can be charged by connecting with an external power supply through a charging interface. In this embodiment, the battery 111 can be taken as a lithium ion battery for example. The auxiliary power supply unit 112 is connected with the battery 111 and is configured to supply power to various chips or active devices in the internal system of the aerosol generating device 100, for example, the auxiliary power supply unit 112 is electrically connected with the control driving module 12 and is configured to supply power to the control driving module 12. The protection and charging unit 113 is electrically connected with the battery 111 and is configured to protect the battery 111 from overcharge, over-discharge, over-current and short circuit, etc. and realize the battery charging function. It can be understood that, since the aerosol generating device 100 is small in size, and the heating control device 10 uses the battery 111 to provide power for the whole device, it is convenient for users to carry.

[0113] The control driving module 12 is the control center of the heating control device 10, and can realize overall logic control, protection mechanism, operation logic control, timing logic control, power control, and driving control of the heating control device 10. The control driving module 12 is electrically connected with the boost regulating module 13, and the control driving module 12 can provide a driving signal to the boost regulating module 13 to configure the size of the direct current output voltage of the boost regulating module 13. The driving signal can include multiple types, and the duty cycle of each type of driving signal is different to realize different functions. For example, the driving signal can include a first driving signal and a second driving signal, wherein the first driving signal is configured to realize arc striking of the plasma generator 20, and the second driving signal is configured to realize discharge of the plasma generator 20. In some examples, the driving signal provided by the control driving module 12 to the boost regulating module 13 can be a pulse width modulation signal, and the duty cycles of different driving signals are different.

[0114] The boost regulating module 13 is configured to realize energy demand conversion, and the boost regulating module 13 can adjust the output voltage to match the actual power demand or the temperature demand of the plasma generator 20. Specifically, the boost regulating module 13 can be electrically connected with the battery cell 111 of the power supply module 11, the control driving module 12, and the inverter conversion module 14, respectively. The boost regulating module 13 can output a direct current output voltage according to the driving signal and the power supply voltage output by the battery cell 111. The direct current output voltage can be greater than the power supply voltage, that is, the boost regulating module 13 can convert the power supply voltage according to the driving signal to output a direct current output voltage greater than the power supply voltage. The direct current output voltage can include multiple types, each type of direct current output voltage corresponds to a type of driving signal, and different direct current output voltages have different sizes.

[0115] The boost regulating module 13 can adopt a boost chopper circuit (Boost circuit) or a buck-boost circuit (Buck_Boost circuit) or other direct current-direct current conversion circuit to convert the direct current output by the battery cell 111 from the power supply voltage to another direct current output voltage with a higher voltage level. As understood by those skilled in the art, the Boost circuit is a boost circuit that can increase the input voltage to an output voltage higher than the input voltage. In the Boost circuit, the on and off states of the switching tube (such as MOSFET or IGBT) control the charging and discharging process of the inductor, thereby realizing voltage boost. The Buck_Boost circuit is a circuit with boost and buck functions, which can realize an output voltage higher or lower than an input voltage under certain conditions. The Buck_Boost circuit controls the charging and discharging process of the inductor by changing the on and off time of the switching tube (i.e. duty cycle), thereby realizing voltage boost and buck.

[0116] When the boost regulation module 13 adopts a Boost circuit, the corresponding relationship between the DC output voltage and the power supply voltage can be as follows: Vout_Boost = Vin / (1-D)

[0117] wherein Vin is the power supply voltage, D is the duty cycle of the driving signal, and Vout_Boost is the DC output voltage.

[0118] When the boost regulation module 13 adopts a Buck_Boost circuit, the corresponding relationship between the DC output voltage and the power supply voltage can be as follows: Vout_Buck_Boost = Vin*D / (1-D)

[0119] wherein Vin is the power supply voltage, D is the duty cycle of the driving signal, and Vout_Buck_Boost is the DC output voltage.

[0120] The inverter conversion module 14, as the power conversion unit of the heating control device 10, is configured to realize energy demand conversion, and the inverter conversion module 14 can convert DC into AC. Specifically, the inverter conversion module 14 can be electrically connected with the control driving module 12, the boost regulation module 13 and the boost transformer 15 respectively, and the inverter conversion module 14 can convert the DC output voltage output by the boost regulation module 13 into AC output voltage under the driving of the control driving module 12, and input into the boost transformer 15. In this way, the boost transformer 15 boosts the AC output voltage to a heating voltage capable of realizing arcing or discharging of the plasma generator 20.

[0121] The inverter conversion module 14 can adopt a half-bridge circuit or a full-bridge circuit. As can be understood by those skilled in the art, the half-bridge circuit is a circuit structure composed of two transistors (or MOSFETs), which is a kind of inverter circuit capable of realizing DC to AC conversion or voltage / current smooth change, and has the characteristics of simple structure and high efficiency. The full-bridge circuit is composed of four switching tubes (usually transistors or MOSFETs) and a load, which is a kind of inverter circuit capable of realizing efficient DC to AC conversion.

[0122] The boost transformer 15 is configured to realize variable ratio boosting, and the boost transformer 15 includes a primary side and a secondary side coupled with the primary side, wherein the primary side is electrically connected with the inverter conversion module 14, and the secondary side is connected with the plasma generator 20. The boost transformer 15 can boost the AC output voltage output by the inverter conversion module 14 to obtain a heating voltage and output to the plasma generator 20, thereby realizing arcing and discharging of the plasma generator 20.

[0123] The step-up transformer 15 can adopt a multi-slot transformer winding design to improve the withstand voltage capability. In the embodiment, the number of turns of the primary winding can be 2T, and the number of turns of the secondary winding can be 910T. The heating voltage is a high-frequency alternating voltage, and the voltage value of the heating voltage ranges from 2 kV to 10 kV. For example, the heating voltage can be 2 kV, 3 kV, 4 kV, 5 kV, 7 kV, 8 kV, or 10 kV, and the specific voltage value of the heating voltage is not limited. The heating voltage can include an arc striking voltage and a discharge voltage, wherein the arc striking voltage can be configured to achieve arc striking of the ionizer 20, and the discharge voltage can be configured to achieve arc discharge of the ionizer 20. For example, the arc striking voltage is greater than the voltage value of the heating voltage, for example, the arc striking voltage can be 7 kV or 8 kV, and the heating voltage can be 2 kV or 3 kV.

[0124] When the inverter conversion module 14 adopts a half-bridge circuit, the corresponding relationship between the heating voltage and the direct current output voltage can be as follows: Vac=(Vout_Boost / 2)*NS / NP or Vac=(Vout_Buck_Boost / 2)*NS / NP.

[0125] Wherein, Vac is the heating voltage, NS is the number of turns of the secondary winding, NP is the number of turns of the primary winding, Vout_Boost is the direct current output voltage output by the boost regulation module 13 when the boost circuit is adopted, and Vout_Buck_Boost is the direct current output voltage output by the boost regulation module 13 when the buck-boost circuit is adopted.

[0126] When the inverter conversion module 14 adopts a full-bridge circuit, the corresponding relationship between the heating voltage and the direct current output voltage can be as follows: Vac=(Vout_Boost)*NS / NP or Vac=(Vout_Buck_Boost)*NS / NP.

[0127] Wherein, Vac is the heating voltage, NS is the number of turns of the secondary winding, NP is the number of turns of the primary winding, Vout_Boost is the direct current output voltage output by the boost regulation module 13 when the boost circuit is adopted, and Vout_Buck_Boost is the direct current output voltage output by the boost regulation module 13 when the buck-boost circuit is adopted.

[0128] That is, in the embodiment, the combination of the boost regulation module 13 and the inverter conversion module 14 can be a boost-chopper circuit plus a half-bridge circuit, a boost-chopper circuit plus a full-bridge circuit, a boost-buck circuit plus a half-bridge circuit, or a boost-buck circuit plus a half-bridge circuit.

[0129] Thus, by adjusting the driving signal outputted from the control driving module 12 to the boost regulating module 13, the DC output voltage outputted from the boost regulating module 13 is changed, so that the heating voltage outputted from the boost transformer 15 to the plasma generator 20 is changed, thereby the switching between the arc striking and the discharging of the plasma generator 20 and the power regulation during the discharging can be realized. That is, the heating control device 10 in the embodiments of the present application can change the heating voltage by adjusting the driving signal, so that the switching between the arc striking and the discharging of the plasma generator 20 and the power regulation during the discharging can be realized, thereby the stable heating or cooling of the aerosol generating article can be realized, and the miniaturization design of the aerosol generating device 100 is facilitated.

[0130] Referring to FIG. 3, further, the control driving module 12 can be preset with a heating time-power mapping table configured to indicate the relationship between the power of the heating control device 10 and the heating time during the heating process of the aerosol generating device 100. The control driving module 12 can output different driving signals according to different stages of the heating time-power mapping table (i.e., each stage corresponds to one driving signal), so that the heating voltage outputted from the boost transformer 15 is changed, so that the power of the heating control device 10 is changed.

[0131] Referring to FIG. 4, the heating time-power mapping table can be divided into an arc striking and igniting stage, a discharging constant power stage, and a heating gap stage, etc. The power of the arc striking and igniting stage is greater than the power of the discharging constant power stage, and the power of the heating gap stage is 0 (i.e., stop heating). For example, in the arc striking and igniting stage, the power of the heating control device 10 is 70 watts, the control driving module 12 provides a first driving signal to the boost regulating module 13, so that the DC output voltage outputted from the boost regulating module 13 is 17.44 volts, and the heating voltage outputted from the boost transformer 15 is 8 kilovolts. In the discharging constant power stage, the power of the heating control device 10 is 30 watts, the control driving module 12 provides a second driving signal to the boost regulating module 13, so that the DC output voltage outputted from the boost regulating module 13 is 9.012 volts, and the heating voltage outputted from the boost transformer 15 is 2 kilovolts. In the discharging constant power stage, the power of the heating control device 10 is 0 watts, the control driving module 12 provides a third driving signal to the boost regulating module 13, so that the DC output voltage outputted from the boost regulating module 13 is 0 volts, and the heating voltage outputted from the boost transformer 15 is 0 volts.

[0132] The heating time-power mapping table is classified into a heating time-power mapping table for a preheating phase and a heating time-power mapping table for a holding phase, wherein the heating control device 10 can realize a preheating function of the plasma generator 20 according to the heating time-power mapping table for the preheating phase, and the heating control device 10 can realize a holding function of the plasma generator 20 according to the heating time-power mapping table for the holding phase.

[0133] For example, in some examples, the working process of the heating control device 10 working according to the heating time-power mapping table for the preheating phase is as follows:

[0134] During 0-800 ms, the power output by the heating control device 10 is 70 W, the direct current output voltage output by the boost regulation module 13 according to the driving signal is 17.445 V, and the heating voltage output by the boost transformer 15 to the plasma generator 20 is 8 KV.

[0135] During 200 ms-1 S, the power output by the heating control device 10 is 30 W, the direct current output voltage output by the boost regulation module 13 according to the driving signal is 9.012 V, and the heating voltage output by the boost transformer 15 to the plasma generator 20 is 2 KV.

[0136] During 1 S-1.05 S, the power output by the heating control device 10 is 0 W, and the direct current output voltage output by the boost regulation module 13 according to the driving signal is 0 V.

[0137] During 1.05 S-1.25 S, the power output by the heating control device 10 is 55 W, the direct current output voltage output by the boost regulation module 13 according to the driving signal is 14.519 V, and the heating voltage output by the boost transformer 15 to the plasma generator 20 is 7 KV.

[0138] During 1.25-1.65 S, the power output by the heating control device 10 is 30 W, the direct current output voltage output by the boost regulation module 13 according to the driving signal is 9.012 V, and the heating voltage output by the boost transformer 15 to the plasma generator 20 is 2 KV.

[0139] During 1.65 S-1.7 S, the power output by the heating control device 10 is 0 W, and the direct current output voltage output by the boost regulation module 13 according to the driving signal is 0 V.

[0140] During 1.7 S-1.9 S, the power output by the heating control device 10 is 55 W, the direct current output voltage output by the boost regulation module 13 according to the driving signal is 14.519 V, and the heating voltage output by the boost transformer 15 to the plasma generator 20 is 7 KV.

[0141] During 1.9S~2.3S, the power outputted by the heating control device 10 is 30W, the direct current output voltage outputted by the boost regulating module 13 according to the driving signal is 10.197V, and the heating voltage outputted by the boost transformer 15 to the plasma generator 20 is 2KV.

[0142] When the heating control device 10 works according to the heating time-power mapping relationship table of the holding stage, the working process is as follows:

[0143] During 0~200ms (arc ignition stage), the power outputted by the heating control device 10 is 55W, the direct current output voltage outputted by the boost regulating module 13 according to the driving signal is 14.519V, and the direct current output voltage outputted by the boost regulating module 13 according to the driving signal is 7KV;

[0144] During 200ms~1S (constant power heating stage), the power outputted by the heating control device 10 is 35W, the direct current output voltage outputted by the boost regulating module 13 according to the driving signal is 13.367V, and the direct current output voltage outputted by the boost regulating module 13 according to the driving signal is 2.5KV;

[0145] During 1S~3S (heating gap stage), the power outputted by the heating control device 10 is 0W, and the direct current output voltage outputted by the boost regulating module 13 according to the driving signal is 0V.

[0146] Referring to FIG. 2, in some embodiments, the heating control device 10 can further include a communication module 17 and a peripheral module 18, wherein the peripheral module 18 can be connected with the control driving module 12 and is configured to realize the state indication and the on-off control of the heating control device 10. The communication module 17 is connected with the control driving module 12 and can realize the connection with the upper computer, set the heating time-power mapping relationship, the heating form, and the program download, etc.

[0147] Referring to FIG. 2, in some embodiments, the control driving module 12 includes a control unit 121 and a driving unit 122, wherein the control unit 121 can generate a plurality of reference voltages according to the heating time-power mapping relationship, and the driving unit 122 is electrically connected with the control unit 121 and is configured to generate the driving signal according to the reference voltages.

[0148] The control unit 121 can be a micro controller unit (MCU) chip, which can determine the output power according to the heating time-power mapping relationship table, and calculate the reference voltages according to the output power. The reference voltages can include a plurality of, and it can be understood that each output power corresponds to a reference voltage.

[0149] The driving unit 122 is electrically connected with the control unit 121 and the boost regulating module 13 respectively. The driving unit 122 can generate a driving signal according to a reference voltage and output the driving signal to the boost regulating module 13. Each reference voltage corresponds to one driving signal. The driving unit 122 can be a pulse width modulation driving unit 122 (PWM driving unit 122), so that the driving unit 122 can generate a driving signal with a duty cycle according to the reference voltage.

[0150] In some examples, the relationship expression between the reference voltage and the heating voltage can be: Vac = [Vref * C * Vin / (1-D)] * NS / NP

[0151] wherein Vref is the reference voltage, Vac is the heating voltage, D is the duty cycle of the driving signal, C is a proportional coefficient, NS is the number of turns of the secondary winding of the boost transformer 15, and NP is the number of turns of the primary winding of the boost transformer 15.

[0152] Referring to FIG. 2, in some examples, the driving unit 122 can also be electrically connected with the inverter conversion module 14, so that the driving unit 122 can drive the inverter conversion module 14, and the inverter conversion module 14 can convert the direct current output voltage into an alternating current output voltage.

[0153] In addition, in some embodiments, the control driving module 12 can replace the control unit 121 and the driving unit 122 with a digital solution control scheme, for example, the control driving module 12 can use a digital signal processing (DSP) chip. It can be understood that the DSP chip can quickly process a large amount of data and meet the real-time control requirement.

[0154] Referring to FIG. 2, in some embodiments, the heating control device 10 further comprises a data acquisition module 16 electrically connected with the boost regulating module 13 and configured to acquire the direct current output voltage output by the boost regulating module 13. The driving unit 122 is further configured to generate a driving signal according to the reference voltage and the direct current output voltage.

[0155] The data acquisition module 16 can be electrically connected with the boost regulating module 13, the inverter conversion module 14, the plasma generator 20, the control unit 121 and the driving unit 122 respectively. The data acquisition module 16 can acquire the DC output voltage output by the boost regulating module 13, the AC output voltage output by the inverter conversion module 14 and the heating voltage of the plasma generator in real time, and can provide these voltages to the control unit 121 and the driving unit 122 in real time. The control unit 121 and the driving unit 122 can perform operations, comparisons, output controls, protections and the like according to these voltages. For example, in the embodiment, the driving unit 122 can generate a driving signal according to the reference voltage and the DC output voltage acquired by the data acquisition module 16, so as to realize closed-loop regulation of the DC output voltage according to the driving signal, and ensure the stability of the DC output voltage.

[0156] Referring to FIGS. 5 and 6, in some embodiments, the driving unit 122 can include a comparison circuit 1221 and a signal output circuit 1222. The comparison circuit 1221 is connected with the control unit 121 and the data acquisition module 16 respectively, and is configured to generate a comparison signal according to the DC output voltage and the reference voltage. The signal output circuit 1222 is connected with the comparison circuit 1221 and the boost regulating module 13, and is configured to generate a driving signal according to the comparison signal and output the driving signal to the boost regulating module 13, so that the boost regulating module 13 outputs the DC output voltage according to the driving signal.

[0157] Specifically, the comparison circuit 1221 includes an operational amplifier U1, a first voltage dividing resistor R1 and a second voltage dividing resistor R2. The operational amplifier U1 includes a first input terminal (pin 1), a second input terminal (pin 2) and an output terminal (pin 3), the first input terminal is connected with the control unit 121, and the output terminal is connected with the signal output circuit 1222. One end of the first voltage dividing resistor R1 is connected with the data acquisition module 16, and the other end of the first voltage dividing resistor R1 is connected with the second input terminal. One end of the first voltage dividing resistor R1 is connected with the other end of the second voltage dividing resistor R2, and the other end of the second voltage dividing resistor R2 is connected with a ground terminal.

[0158] In the embodiment, the model of the operational amplifier U1 can be taken as SGM8965-2XMS8G for example. It can be understood that the SGM8965-2XMS8G is a high-speed operational amplifier, which can provide signal amplification, filtering, comparison and the like in various electronic systems, and has good electrical performance and stability. The operational amplifier U1 can adopt an MSOP-8 package. The MSOP-8 package is a small surface mount package form, which is beneficial to save PCB space and improve the integration of the system.

[0159] Please further combine Figure 5, the comparison circuit 1221 can also include the peripheral circuit of the operational amplifier U1 (including resistors R3, R4, R5, R6, R7, capacitors C1, C2, C3, C4, C5, diodes D1 and D2), which together with the operational amplifier U1 constitutes a minimum system circuit to ensure the normal operation of the operational amplifier U1.

[0160] Please combine Figure 6, the signal output circuit 1222 can include a power management chip U2, which is connected to the output of the operational amplifier U1 and the boost regulation module 13 respectively, and is configured to generate a driving signal according to the comparison signal output by the output of the operational amplifier U1.

[0161] In this embodiment, the power management chip U2 can be exemplified by TSP40210DGQR. TSP40210DGQR is a DC / DC controller, which is configured for various applications such as boost, flyback, SEPIC and LED driver. Moreover, it adopts MSOP-10 packaging, which usually has 10 pins distributed on both sides of the package in a specific arrangement, facilitating connection with the pads on the circuit board. The MSOP-10 packaging size is relatively small, which helps to realize high-density layout on the circuit board, thereby saving space.

[0162] The signal output circuit 1222 also includes the peripheral circuit of the power management chip U2 (including diode D11, resistors R11, R12, R13, R14, R16, capacitors C11, C13, C14, C15, C16, C17), which together with the power management chip U2 constitutes the signal output circuit 1222, thereby ensuring the normal operation of the battery management chip, so that the battery management chip can generate a driving signal with a duty cycle according to the comparison signal input by the output of the operational amplifier U1.

[0163] Please further combine Figure 5 and Figure 6, the reference voltage input by the control unit 121 is input to the first input terminal of the operational amplifier U1 through the resistor R4, and the DC output voltage collected by the data collection module 16 is input to the second input terminal of the operational amplifier U1 through the first voltage dividing resistor R1 and the second voltage dividing resistor R2 after being divided by the resistor R5, so that the voltage input to the first input terminal and the second input terminal of the operational amplifier U1 is compared to generate a comparison signal, and the comparison signal is output through the output terminal (if the voltage of the first input terminal is greater than that of the second input terminal, the voltage of the comparison signal will be larger, and vice versa). The comparison signal is output to pin 4 of the power management chip U2 through diodes D1 and D2, and the power management chip U2 generates a drive signal according to the comparison signal (if the voltage of the comparison signal is larger, the duty cycle of the drive signal will be larger, and vice versa), and outputs the drive signal to the boost regulation module 13 through pin 8 of the power management chip U2, so as to adjust the DC output voltage output by the boost regulation module 13. In this way, closed-loop control of the boost regulation module 13 is realized, the stability of the DC output voltage is ensured, and the heating stability of the aerosol generating device 100 is further ensured.

[0164] Please combine Figure 7, in some embodiments, the boost regulation module 13 can adopt a boost chopper circuit. It can be understood that the boost chopper circuit has the advantages of simple structure, low cost, high conversion efficiency and good output stability, so that the stability of the DC output voltage can be ensured while the cost of the heating control device 10 is reduced.

[0165] Specifically, the battery cell 111 can include a positive terminal BAT+ and a negative terminal BAT-, and the boost chopper circuit includes a first inductor L1, a first drive transistor Q1, a first diode D21, a plurality of input capacitors C21 and a plurality of first output capacitors C22. Wherein, one end of the first inductor L1 is connected to the positive terminal BAT+ of the battery cell 111, and the other end of the first inductor L1 is connected to the positive terminal of the first diode D21; the first pole of the first drive transistor Q1 is connected to the first inductor L1 and the positive terminal of the first diode D21, the second pole of the first drive transistor Q1 is connected to the negative terminal BAT- of the battery cell 111, and the control pole of the first drive transistor Q1 is connected to the drive unit 122 of the control drive module 12; the negative terminal of the first diode D21 is connected to the inverter conversion module 14; one end of the input capacitor C21 is connected to the positive terminal BAT+ of the battery cell 111 of the power supply module 11, and the other end of the input capacitor C21 is connected to the negative terminal BAT- of the power supply module 11; one end of the first output capacitor C22 is connected to the negative terminal of the diode, and the other end of the first input capacitor C22 is connected to the negative terminal BAT- of the battery cell 111 of the power supply module 11.

[0166] Referring to FIG. 8, in some embodiments, the boost regulating module 13 can employ a boost-buck circuit. As can be appreciated, a boost-buck circuit, as a power management circuit capable of both boosting and bucking, can accommodate a wider input voltage range, and thus can be adapted to different battery cells 111, improving the adaptability of the boost regulating module 13.

[0167] Specifically, the boost-buck circuit includes a second drive transistor Q11, a third drive transistor Q12, a second diode D31, a second inductor L2, and a second output capacitor C31, wherein the first pole of the second drive transistor Q11 is connected to the positive terminal BAT+ of the battery cell 111, the control pole of the second drive transistor Q11 is connected to the control drive module 12, the first pole of the third drive transistor Q12 is connected to the second pole of the second drive transistor Q11, the second pole of the third drive transistor Q12 is connected to the inverter conversion module 14, and the control pole of the third drive transistor Q12 is connected to the control drive module 12; one end of the second inductor L2 is connected to the negative terminal BAT- of the battery cell 111, the other end of the second inductor L2 is connected to the positive pole of the second diode D31, the negative pole of the second diode D31 is connected to the second pole of the third drive transistor Q12; one end of the second output capacitor C31 is connected to the second pole of the third drive transistor Q12, and the other end of the second output capacitor C31 is connected to the negative terminal BAT- of the battery cell 111.

[0168] The first drive transistor and the second drive transistor Q11 can employ a MOSFET transistor (Metal-Oxide-Semiconductor Field-Effect Transistor) or an IGBT transistor.

[0169] Referring to FIG. 7, in some embodiments, the inverter conversion module 14 can employ a half-bridge circuit. As can be appreciated, a half-bridge circuit includes only two switching elements, and thus can reduce the cost of the inverter conversion module 14 compared to a full-bridge circuit.

[0170] Specifically, the half-bridge circuit comprises an upper transistor Q2, a lower transistor Q3, a first filter resistor R24, a second filter resistor R25, a first filter capacitor C23 and a second filter capacitor C24. The first pole of the upper transistor Q2 is connected to the boost regulating module 13, the second pole of the upper transistor Q2 is connected to the boost transformer 15, and the control pole of the upper transistor Q2 is connected to the control driving module 12. The first pole of the lower transistor Q3 is connected to the boost regulating module 13, the second pole of the lower transistor Q3 is connected to the boost transformer 15, and the control pole of the upper transistor Q2 is connected to the control driving module 12. One end of the first filter resistor R24 is connected to the first pole of the upper transistor Q2, and the other end of the first filter resistor R24 is connected to the second pole of the upper transistor Q2. One end of the second filter resistor R25 is connected to the first pole of the lower transistor Q3, and the other end of the second filter resistor R25 is connected to the second pole of the lower transistor Q3. One end of the first filter capacitor C23 is connected to the first pole of the upper transistor Q2, and the other end of the first filter capacitor C23 is connected to the second pole of the upper transistor Q2. One end of the second filter capacitor C24 is connected to the first pole of the lower transistor Q3, and the other end of the second filter capacitor C24 is connected to the second pole of the lower transistor Q3.

[0171] The upper transistor Q2 and the lower transistor Q3 can be MOSFET transistors or IGBT transistors.

[0172] Referring to FIG. 8, in some embodiments, the inverter conversion module 14 can adopt a full-bridge circuit. In this way, the inverter conversion module 14 is more stable when the working power is relatively large.

[0173] The full-bridge circuit comprises a first switch tube Q13, a second switch tube Q14, a third switch tube Q15, a fourth switch tube Q16 and a load capacitor C32. The first pole of the first switch tube Q13 is connected to the boost regulating module 13, the control pole of the first switch tube Q13 is connected to the control driving module 12, the first pole of the second switch tube Q14 is connected to the boost regulating module 13, the second pole of the second switch tube Q14 is connected to the boost transformer 15, the control pole of the second switch tube Q14 is connected to the control driving module 12, the first pole of the third switch tube Q15 is connected to the boost regulating module 13, and the control pole of the third switch tube Q15 is connected to the control driving module 12. The first pole of the fourth switch tube Q16 is connected to the boost regulating module 13, the second pole of the fourth switch tube Q16 is connected to the boost transformer 15, the control pole of the fourth switch tube Q16 is connected to the control driving module 12, one end of the load capacitor C32 is connected to the third poles of the first switch tube Q13 and the third switch tube Q15, and the other end of the load capacitor C32 is connected to the boost transformer 15.

[0174] The first switch Q13, the second switch Q14, the third switch Q15, and the fourth switch Q16 can be MOSFET transistors or IGBT transistors.

[0175] In the description of the present specification, the description referring to the terms "one embodiment", "certain embodiments", "exemplary embodiment", "example", "specific example", or "some examples" etc. means that the specific feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. The illustrative expressions of the above terms in the present specification do not necessarily refer to the same embodiment or example. Also, the specific feature, structure, material or characteristic described can be combined in any appropriate way in one or more embodiments or examples.

[0176] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made hereto without departing from the principles and spirit of the application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An aerosol-generating article, wherein, The aerosol generating device comprises a plasma generator and a heating control device, the heating control device comprises a power supply module, a control driving module, a boost regulating module, an inverter conversion module and a boost transformer; The control driving module is electrically connected with the power supply module, and the control driving module can generate a plurality of driving signals according to a heating time-power mapping relationship; The boost regulating module is electrically connected with the power supply module and the control driving module, and is configured to generate a direct current output voltage according to the power supply voltage of the power supply module and the driving signal, the direct current output voltage comprises a plurality of types, and the different direct current output voltages are different in size, each direct current output voltage corresponds to one driving signal; The inverter conversion module is electrically connected with the boost regulating module, and is configured to generate an alternating current output voltage according to the direct current output voltage; The boost transformer is electrically connected with the inverter conversion module and the plasma generator, and is configured to generate a heating voltage according to the alternating current output voltage and provide the heating voltage to the plasma generator, drive the plasma generator to generate plasma and heat, and heat the aerosol generating article.

2. The aerosol generating appliance of claim 1, wherein, The control driving module comprises: A control unit, which can generate a plurality of reference voltages according to a heating time-power mapping relationship; A driving unit electrically connected with the control unit and configured to generate the driving signal according to the reference voltage.

3. Aerosol generating appliance according to claim 2, wherein, The control unit can determine an output power according to a heating time-power mapping relationship of a preheating stage, and calculate and generate the reference voltage according to the output power; Or Determine an output power according to a heating time-power mapping relationship of a holding stage, and calculate and generate the reference voltage according to the output power.

4. The aerosol generating appliance of claim 2, wherein, The heating control device further comprises a data acquisition unit electrically connected with the boost regulating module to be configured to acquire the direct current output voltage output by the boost regulating module, and the driving unit is further configured to generate the driving signal according to the reference voltage and the direct current output voltage.

5. The aerosol generating appliance of claim 1, wherein, The plasma generator comprises: A heating piece, an internal heating cavity is formed in the heating piece; and At least one set of electrode assemblies, each set of electrode assemblies comprises a first electrode and a second electrode, the first electrode and the second electrode both extend into the heating cavity, and an arc can be controlled to be formed between the first electrode and the second electrode in the heating cavity to generate plasma; Wherein, the heating piece can form a containing position for containing an aerosol generating substrate.

6. The aerosol generating appliance of claim 1, wherein, The plasma generator comprises: A first electrode; A second electrode; An inner tube, the first electrode is at least partially arranged in the inner tube, and at least part of the second electrode is arranged at one end of the inner tube and is arranged in opposition to and spaced apart from the first electrode; An outer tube, the outer tube is sleeved outside the inner tube, and plasma is generated between the second electrode and the first electrode when the first electrode and the second electrode are electrified; The conductive member is connected to the second electrode and is used to be electrically connected with the step-up transformer, and the conductive member extends from one end of the inner tube to the other end of the inner tube along the axial direction of the inner tube, wherein the tube segment of the inner tube corresponding to the conductive member partially faces the outer tube.

7. The aerosol generating appliance of claim 4, wherein, The driving unit comprises: A comparison circuit connected with the control unit and the data acquisition unit respectively, configured to generate a comparison signal according to the DC output voltage and the reference voltage; A signal output circuit connected with the comparison circuit and the step-up regulation module, configured to generate the driving signal according to the comparison signal.

8. The aerosol generating article of claim 7, wherein, The signal output circuit comprises: A power management chip connected with the comparison circuit and the step-up regulation module respectively, configured to generate the driving signal according to the comparison signal output by the comparison circuit.

9. The aerosol generating appliance of claim 1, wherein, The step-up regulation module comprises a step-up chopper circuit or a step-up / down circuit.

10. The aerosol generating appliance of claim 7, wherein, The inverter conversion module comprises a half-bridge circuit or a full-bridge circuit.

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