Aerosol generating device and system and control method

Abstract

Provided are an aerosol generating device and system and a control method. The aerosol generating device comprises a battery cell (5) for providing power; a first heater (3) and a second heater (21), the first heater (3) being configured to be at least partially inserted into the interior of an aerosol generating article (6) for heating, and the second heater (21) being configured to heat around at least part of the aerosol generating article (6); and a control unit (71), configured to, within at least one time period during heating and on the basis of first preset energy corresponding to the time period, control the battery cell to periodically provide the first preset energy to the first heater (3); and on the basis of second preset energy corresponding to the time period, control the battery cell (5) to periodically provide the second preset energy to the second heater (21). The influence of the first heater (3) and the second heater (21) on the temperature of each other during heating is reduced, the software complexity is reduced, and the user vaping experience is improved.

Description

Aerosol-generating device, system and control method

[0001] Cross-reference to Related Applications

[0002] This application claims priority to the Chinese patent application No. 202410634609.8, filed on May 21, 2024, and entitled “Aerosol-generating device, system and control method”, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the field of aerosol-generating technology, and in particular to an aerosol-generating device, system and control method. BACKGROUND

[0004] As an example, an aerosol-generating device has a heater configured to heat within an aerosol-generating article, i.e., commonly known as center or internal heating. As another example, an aerosol-generating device has a heater configured to heat around at least part of an aerosol-generating article, i.e., commonly known as peripheral or circumferential heating.

[0005] There are various defects in using a single center heating structure or a circumferential heating structure, such as a large temperature gradient inside the article, which leads to uneven heating of the article, a low toasting rate of the article, and the like. In order to avoid these defects, the existing aerosol-generating device usually adopts a scheme of combining a center heating structure with a circumferential heating structure.

[0006] The problem of the above scheme is that the center heating structure or the circumferential heating structure will affect the temperature of the other when using a temperature control algorithm to control the temperature of its heater, resulting in a deviation between the actual temperature curve and the preset temperature curve in some time periods, which affects the user's smoking experience. In addition, when implementing the temperature control algorithm, the temperature information of the center heating structure and the circumferential heating structure needs to be collected, which increases the complexity of the temperature control algorithm.

[0007] SUMMARY

[0008] Embodiments of the present application provide an aerosol-generating device, system and control method to solve the problem that the center heating structure or the circumferential heating structure will affect the temperature of the other when using a temperature control algorithm to control the temperature of its heater.

[0009] In one aspect, the present application provides an aerosol-generating device, comprising:

[0010] a battery for providing power;

[0011] a first heater configured to be inserted at least partially into an inside of the aerosol generating article to heat, and a second heater configured to heat around at least a portion of the aerosol generating article;

[0012] a control unit configured to control the electric cell to periodically provide the first preset energy to the first heater according to a first preset energy corresponding to a time period during heating, and to periodically provide the second preset energy to the second heater according to a second preset energy corresponding to the time period.

[0013] In an example, the control unit is configured to control the electric cell to provide at least one of the first preset energy to the first heater for a first fixed period of time.

[0014] In an example, the first fixed period of time is between 0.01 seconds and 20 seconds.

[0015] In an example, the control unit is configured to control the electric cell to provide two adjacent first preset energies to the first heater at a first fixed interval of time.

[0016] In an example, the first fixed interval of time is between 0.001 seconds and 20 seconds.

[0017] In an example, the control unit is configured to control the electric cell to provide heating energy to the first heater, to determine the heating energy provided by the electric cell to the first heater, and to stop providing heating energy to the first heater if the heating energy provided by the electric cell to the first heater reaches the first preset energy.

[0018] In an example, the control unit is configured to control the electric cell to provide heating energy to the first heater at a fixed power, to determine a time length for which the electric cell provides heating energy to the first heater, and to stop providing heating energy to the first heater if the time length for which the electric cell provides heating energy to the first heater reaches a time length corresponding to the first preset energy.

[0019] In an example, the control unit is configured to control the electric cell to provide at least one of the second preset energy to the second heater for a second fixed period of time.

[0020] In an example, the control unit is configured to control the electric cell to provide two adjacent second preset energies to the second heater at a second fixed interval of time.

[0021] In an example, the first preset energy or the second preset energy is between 0 and 50 joules.

[0022] In an example, the control unit is configured to control the first heater to start heating before the second heater, or to control the first heater and the second heater to start heating at the same time.

[0023] In an example, further comprising a magnetic field generator for generating a varying magnetic field;

[0024] At least one of the first heater and the second heater is configured to heat up when penetrated by the varying magnetic field.

[0025] In an example, the first preset energy corresponding to different time periods is different, and / or the second preset energy corresponding to different time periods is different.

[0026] In an example, the control unit is configured to, within the time period, heat one of the first heater and the second heater as a main heater, and heat the other heater as an auxiliary heater.

[0027] The preset energy corresponding to the main heater is greater than the preset energy corresponding to the auxiliary heater.

[0028] Another aspect of the embodiments of the present application provides a control method of an aerosol generating device, the aerosol generating device comprising:

[0029] An electric core for providing electric power;

[0030] A first heater configured to be at least partially inserted into an inside of an aerosol generating article to heat, and a second heater configured to heat around at least a portion of the aerosol generating article;

[0031] The control method comprises:

[0032] During the heating, for at least one time period, the electric core is controlled to periodically provide a first preset energy to the first heater according to a first preset energy corresponding to the time period, and to periodically provide a second preset energy to the second heater according to a second preset energy corresponding to the time period.

[0033] Another aspect of the embodiments of the present application also provides an aerosol generating system comprising an aerosol generating device and an aerosol generating article;

[0034] The inside of the aerosol generating article is provided with a first heater configured to heat up when penetrated by a varying magnetic field;

[0035] The aerosol generating device comprises:

[0036] an electric cell configured to provide electric power;

[0037] a magnetic field generator configured to generate a varying magnetic field;

[0038] a second heater configured to heat around at least part of the aerosol generating article;

[0039] a control unit configured to, during at least one time period of the heating, control the electric cell to periodically provide the first preset energy to the first heater according to a first preset energy corresponding to the time period, and control the electric cell to periodically provide the second preset energy to the second heater according to a second preset energy corresponding to the time period.

[0040] The aerosol generating device, system and control method provided by the embodiments of the present application can control the electric cell to periodically provide the first preset energy to the first heater or the second preset energy to the second heater according to the first preset energy and / or the second preset energy corresponding to at least one time period of the heating, thereby reducing the influence on the temperature of each other during heating, reducing the software complexity and improving the user's smoking experience. BRIEF DESCRIPTION OF DRAWINGS

[0041] One or more embodiments are illustrated by way of example in the drawings in which like reference numerals indicate like elements, and in which:

[0042] FIG. 1 is a cross-sectional view of an aerosol generating system according to an embodiment of the present application;

[0043] FIG. 2 is a partial view of FIG. 1;

[0044] FIG. 3 is a view of FIG. 2 in an extraction state;

[0045] FIG. 4 is a circuit diagram according to an embodiment of the present application;

[0046] FIG. 5 is a cross-sectional view of another aerosol generating system according to an embodiment of the present application;

[0047] FIG. 6 is a partial enlarged view of FIG. 5;

[0048] FIG. 7 is a temperature profile of an aerosol generating device according to an embodiment of the present application;

[0049] FIG. 8 is another temperature profile of an aerosol generating device according to an embodiment of the present application;

[0050] FIG. 9 is another temperature curve diagram of the aerosol generating device according to an embodiment of the present application;

[0051] FIG. 10 is an actual temperature curve diagram of the aerosol generating device according to an embodiment of the present application;

[0052] FIG. 11 is another actual temperature curve diagram of the aerosol generating device according to an embodiment of the present application;

[0053] FIG. 12 is an energy supply diagram of the first heater over a time period according to an embodiment of the present application;

[0054] FIG. 13 is a nicotine release curve diagram according to an embodiment of the present application;

[0055] FIG. 14 is a control method diagram of the aerosol generating device according to an embodiment of the present application. DETAILED DESCRIPTION

[0056] The present application will be described in detail below with specific embodiments. The following embodiments will help those skilled in the art to further understand the present application, but do not limit the present application in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application. These are within the scope of protection of the present application.

[0057] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0058] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict, and are within the scope of protection of the present application. In addition, although the functional modules are divided in the device schematic diagram, and the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order from the module division in the device or the order in the flowchart. In addition, the terms "first", "second", "third" and the like used herein do not limit the data and execution order, but only distinguish the same items or similar items with basically the same function and effect.

[0059] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as understood by those skilled in the art to which the present application belongs. The terms used in the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application. The term "and / or" used in the present application includes any and all combinations of one or more related listed items.

[0060] In addition, any feature in the described embodiments of the present application and combinations thereof can be included in any other embodiment of the present application without departing from the scope of the present application.

[0061] Referring to FIGS. 1-3, an aerosol-generating device according to an embodiment of the present application includes a holder 1, an extractor 2, and a first heater 3.

[0062] The holder 1 has a first accommodation cavity 11 formed therein, and the first heater 3 is configured in a sheet shape or a needle shape extending axially along the first accommodation cavity 11.

[0063] The extractor 2 includes a second heater 21, a support portion 22, and a bottom support 23. The second heater 21 extends axially and has a second accommodation cavity 211 for removably receiving at least a portion of an aerosol-generating article 6. When the extractor 2 is coupled to the holder 1, the holder 1 supports the support portion 22, the second heater 21 is disposed at least partially in the first accommodation cavity 11, the second heater 21 heats at least a portion of the aerosol-generating article 6 received in the second accommodation cavity 211, and the first heater 3 passes through the bottom support 23 into the second accommodation cavity 211 to be inserted into the aerosol-generating article 6 received in the second accommodation cavity 211 to heat the aerosol-generating article 6.

[0064] The first heater 3 and the second heater 21 cooperate with each other to simultaneously heat the aerosol-generating article 6 circumferentially and centrally, thereby facilitating uniform heating of the aerosol-generating article 6 and improving roasting rate and smoking experience of the aerosol-generating article 6.

[0065] In an example, the holder 1 has a magnetic field generator 4 coupled thereto to generate a varying magnetic field, and the first heater 3 includes a susceptor material that generates heat when penetrated by the varying magnetic field to heat the aerosol-generating article 6 received in the second accommodation cavity 211. The susceptor material includes nickel alloy, iron alloy, nickel-iron alloy, iron-cobalt alloy, iron-silicon alloy, iron-aluminum alloy, iron-niobium alloy, etc. In a preferred embodiment, the susceptor material includes stainless steel of grade 430 (SS430), and can further include stainless steel of grade 420 (SS420) and an alloy material containing iron and nickel (such as permalloy).

[0066] In a specific example, the magnetic field generator 4 includes an induction coil disposed on the holder 1, and a resonant circuit including the induction coil and a capacitor (which can be a series resonant circuit and / or a parallel resonant circuit) to form an alternating current flowing through the induction coil during resonance, thereby causing the induction coil to generate an alternating magnetic field to induce the first heater 3 to generate heat.

[0067] The second heater 21 comprises a resistance material or an infrared electric heating material, and heats the aerosol generating article 6 received in the second receiving cavity 211 by resistance or infrared heating.

[0068] It can be understood that in other examples, the second heater 21 can also comprise a susceptor material that generates heat when penetrated by the changing magnetic field, and in turn heats the aerosol generating article 6 received in the second receiving cavity 211. In another other example, the first heater 3 can also use a non-electromagnetic heating method, such as a resistance or infrared heating method.

[0069] The aerosol generating device further comprises an electric core 5 and a circuit 7. The electric core 5 provides electric power for operating the aerosol generating device. For example, the electric core 5 can provide electric power to the first heater 3 and the second heater 21, so that the heaters generate heat to generate heating energy after receiving the electric power. In addition, the electric core 5 can provide electric power required for operating other elements provided in the aerosol generating device. The electric core 5 can be a rechargeable battery or a disposable battery. The electric core 5 can be, but is not limited to, a lithium iron phosphate (LiFeP04) battery. For example, the electric core 5 can be a lithium cobaltate (LiCo02) battery or a lithium titanate battery.

[0070] The circuit 7 controls the overall operation of the aerosol generating device. As shown in FIG. 4, in an example, the circuit 7 comprises a control unit 71, a first switching circuit 72, a resonance circuit 73, a first detection circuit 74, a second switching circuit 75, and a second detection circuit 76.

[0071] The first switching circuit 72 can be a circuit composed of transistors, such as a half-bridge circuit composed of two transistors connected in series, which can include but are not limited to IGBT, MOS tube, etc. The resonance circuit 73 is composed of an inductor and a capacitor, for example, can be an LCC series resonance circuit. The control unit 71 can output a pulse signal to control the transistors of the first switching circuit 72 to intermittently turn on and off, so that the resonance circuit 73 generates resonance, and in turn, the resonance circuit 73 forms an alternating current flowing through the inductor in the process of resonance, so that the inductor generates an alternating magnetic field to induce the first heater 3 to generate heat.

[0072] The second switching circuit 75 is also a circuit composed of transistors, such as a transistor electrically connected between the electric core 5 and the second heater 21. The control unit 71 can output another pulse signal to control the transistors of the second switching circuit 75 to intermittently or intermittently turn on and off, so that the second heater 21 heats at a corresponding voltage.

[0073] The first detection circuit 74 is configured to detect an electrical parameter value of the resonant circuit 73, such as a resonant voltage, a resonant current, etc. The control unit 71 can control the heating energy supplied to the first heater 3 based on the electrical parameter value detected by the first detection circuit 74, so that the first heater 3 operates according to a predetermined desired temperature profile.

[0074] The second detection circuit 76 is configured to detect an electrical parameter value of the second heater 21, such as a voltage, a current, etc. The control unit 71 can control the heating energy supplied to the second heater 21 based on the electrical parameter value detected by the second detection circuit 76, so that the second heater 21 operates according to a predetermined desired temperature profile.

[0075] It should be noted that the aerosol-generating system formed by the aerosol-generating device and the aerosol-generating article 6 can also have other variations. For example, as shown in FIGS. 5-6, in a variation, the first heater 3 can also be built-in in the aerosol-generating article 6, i.e., arranged in the aerosol-generating article 6. For example, the aerosol-generating article 6 includes a filter segment and a tobacco segment, and the first heater 3 is arranged in the tobacco segment. The first heater 3 can be in a sheet shape, a granular shape, a tubular shape, etc., and preferably in a sheet shape. In this variation, the aerosol-generating device does not have the first heater 3; the aerosol-generating device can also not have the extractor 2, and the second heater 21 extends along the axial direction of the first accommodating cavity 11, so as to at least partially heat the aerosol-generating article 6 received in the first accommodating cavity 11.

[0076] FIG. 7 is a temperature profile of the aerosol-generating device according to an embodiment of the present application.

[0077] As shown in FIG. 7, curve A in the figure is a temperature-time relationship curve of the first heater 3, and curve B in the figure is a temperature-time relationship curve of the second heater 21. t0-t4 is the entire heating period of the aerosol-generating device.

[0078] During t0-t2, which is a preheating stage. Upon detecting a puff initiation signal, the control unit 71 controls the temperature of the first heater 3 to rapidly increase, for example, from an initial temperature T10 to a preset temperature T11, and then maintain at the preset temperature T11 for a period of time (shown as t1-t2 in the figure). The preset temperature T11 is between 200°C and 450°C, so as to generate aerosol or a satisfactory amount of aerosol, thereby meeting the puffing needs of the user. Generally, the duration of t0-t2 is short, for example, 15s-30s. In some examples, there can be no holding stage shown as t1-t2. It can be understood that the puff initiation signal can be a signal generated from a button, a puff sensor, etc.

[0079] At time t2, the control unit 71 outputs a signal prompting the user to puff, prompting the user to puff. The prompting mode can be vibration, sound, light (such as LED light always on or flashing, LCD display), etc. It should be noted that the period t2-t4 is the puffing stage.

[0080] During t2-t3, after outputting the signal prompting the user to puff, the control unit 71 controls the temperature of the first heater 3 to decrease from the preset temperature T11 to the preset temperature T12 and maintain at the preset temperature T12 for a period of time.

[0081] During t0-t3, the second heater 21 is in a state of stopping heating, that is, the first heater 3 starts heating earlier than the second heater 21, or the second heater 21 starts heating later than the first heater 3. The duration of t0-t3 is between 80s-120s, for example, 90s, 100s, 110s, etc.

[0082] During t3-t4, the temperature of the first heater 3 needs to be reduced to reduce the risk of harmful substance generation, while the second heater 21 needs to be controlled to start heating to increase the aerosol release amount of the aerosol generating article 6, avoid the problem of uneven aerosol release, and improve the user's puffing experience. As shown in FIG. 7, the control unit 71 controls the temperature of the first heater 3 to decrease from the preset temperature T12 to the preset temperature T13 and maintain at the preset temperature T13 for a period of time, while controlling the second heater 21 to increase from its initial temperature T20 to the preset temperature T21 and then maintain at the preset temperature T21 for a period of time. It can be understood that the initial temperature T20 is generally greater than the initial temperature T10.

[0083] As can be seen from the figure, during t3-t4, the preset temperature T13 is greater than the preset temperature T21. During this period, the first heater 3 is mainly heated, that is, used to provide the required temperature for puffing; and the second heater 21 is auxiliary heated, that is, used to provide a temperature less than the required temperature for puffing.

[0084] FIG. 8 is another temperature curve diagram of the aerosol generating device provided by the embodiments of the present application.

[0085] Different from the example of FIG. 7, during t0-t3, the control unit 71 controls the second heater 21 to start heating from t0, i.e. the first heater 3 and the second heater 21 are controlled to start heating at the same time upon detecting the puffing start signal. Specifically, the control unit 71 controls the second heater 21 to increase from its initial temperature T30 (which is assumed to be the same as the initial temperature T10, but in practice can be different) to a preset temperature T31, and then maintain the preset temperature T31 for a period of time. During t0-t2, the control unit 71 controls the battery 5 to provide more total energy to the first heater 3 than to the second heater 21, so that the temperature of the first heater 3 increases to a preset temperature T11 (preheating temperature), and the temperature of the second heater 21 increases to a preset temperature T31 (auxiliary temperature), which is lower than the preheating temperature. During t2-t3, the first heater 3 is still the main heater, and the second heater 21 is still the auxiliary heater. During t3-t4, the control unit 71 controls the second heater 21 to increase from the preset temperature T31 to a preset temperature T32, and then maintain the preset temperature T32 for a period of time.

[0086] FIG. 9 is another temperature curve diagram of the aerosol generating device according to an embodiment of the present application.

[0087] Different from the example of FIG. 8, during t3-t4, the first heater 3 is the auxiliary heater, and the second heater 21 is the main heater. That is, during t2-t3 and t3-t4, the main heater or the auxiliary heater switches once. In actual control, the number of switches can be more than once.

[0088] It can be understood that the temperature curves shown in FIGS. 7-9 are ideal curves, and in actual operation, there can be differences, for example, the actual temperature curve diagram shown in FIG. 10. Similar to the previous examples, in FIG. 10, the abscissa is time t (seconds), and the ordinate is temperature T (°C).

[0089] In order to make the first heater 3 and the second heater 21 operate according to the predetermined desired temperature curve, the prior art usually detects the temperature of the first heater 3 or the second heater 21 by a temperature detection unit, and then controls the heating energy of the first heater 3 or the second heater 21 by the control unit based on the temperature information detected by the temperature detection unit. As described before, this way will affect the temperature of each other due to the temperature of the heater, resulting in a deviation between the actual temperature curve and the preset temperature curve in some time periods, which affects the user's smoking experience. In order to avoid this problem,

[0090] In an example, the control unit is configured to, during at least one time period of the heating, control the electric chip 5 to periodically provide the first preset energy to the first heater 3 according to a first preset energy corresponding to the time period; and control the electric chip 5 to periodically provide the second preset energy to the second heater according to a second preset energy corresponding to the time period.

[0091] Generally, the first preset energy or the second preset energy is between 0-50 Joules; or between 0-45 Joules; or between 0-40 Joules; or between 0-35 Joules; or between 0-30 Joules; or between 0-25 Joules; or between 0-20 Joules; or between 0-15 Joules; or between 0-10 Joules; or between 0-5 Joules.

[0092] According to different preset energies, the entire heating period of the first heater 3 or the second heater 21 (which is the same as the entire heating period of the aerosol generating device, for example, in FIG. 7, the entire heating period of the first heater 3 or the second heater 21 is t0-t4) can be divided into multiple smaller heating periods. As shown in FIG. 11, the entire heating period of the first heater 3 can be divided into tA1-tA7, the preset energy corresponding to the heating period tA1 is QA1, the preset energy corresponding to the heating period tA2 is QA2, and the preset energy corresponding to the heating period tA7 is QA7. The entire heating period of the second heater 21 can be divided into tB1-tB4, the preset energy corresponding to the heating period tB1 is QB1, the preset energy corresponding to the heating period tB2 is QB2, and the preset energy corresponding to the heating period tB4 is QB4.

[0093] The first preset energy corresponding to different time periods is different, and / or the second preset energy corresponding to different time periods is different. For example, in FIG. 11, each of QA1-QA7 is different, and each of QB1-QB4 is different. It can be understood that in other examples, the first preset energy corresponding to different time periods can be partially the same or all the same, and / or the second preset energy corresponding to different time periods can be partially the same or all the same.

[0094] Accordingly, during at least one time period of the entire heating period of the aerosol generating device, the electric core 5 can be periodically controlled to provide the first preset energy to the first heater 3 according to the first preset energy corresponding to the time period, and to provide the second preset energy to the second heater 21 according to the second preset energy corresponding to the time period. For example, during the time period tA1, the first preset energy corresponding to the first heater 3 is QA1, and the second preset energy corresponding to the second heater 21 is QB1. The control unit can control the electric core 5 to periodically provide the first preset energy QA1 to the first heater 3, and to periodically provide the second preset energy QB1 to the second heater 21. During the time period tA3, the first preset energy corresponding to the first heater 3 changes from QA1 to QA3, and the second preset energy corresponding to the second heater 21 changes from QB1 to QB2. The control unit can control the electric core 5 to periodically provide the first preset energy QA3 to the first heater 3, and to periodically provide the second preset energy QB2 to the second heater 21.

[0095] As shown in FIG. 12, taking the example of periodically providing the first preset energy QA1 to the first heater 3 by the electric core 5. During the time period tA1, the control unit controls the electric core 5 to periodically provide 8 first preset energies QA1 to the first heater 3. P1 in the figure is the power corresponding to the time when the electric core 5 periodically provides the first preset energy QA1 to the first heater 3, which can be a constant value or a variable value. In the example in the figure, P1 is a constant power. td1 is the power duration corresponding to the time when the electric core 5 provides the first preset energy QA1 to the first heater 3. In the case where the first preset energy QA1 and P1 are known, td1 = QA1 / P1. td2 is the interval time between two adjacent first preset energies QA1. It can be understood that td1 + td2 is the cycle time corresponding to the time when the electric core 5 provides the first preset energy QA1 to the first heater 3.

[0096] By using the above-mentioned control mode of preset energy, on the one hand, the first heater 3 or the second heater 21 can operate according to the predetermined desired temperature curve, without the need to additionally set a temperature detection unit to detect the temperature of the first heater 3 or the second heater 21, thereby reducing the hardware cost and the complexity of the temperature control algorithm. On the other hand, the influence of the temperature of the first heater 3 or the second heater 21 on the temperature of the other one can be reduced, the deviation between the actual temperature curve and the preset temperature curve can be reduced, and the user's smoking experience can be improved. Especially by reasonably setting the preset energy, the aerosol release amount, such as the nicotine release amount, can be increased puff by puff, so as to achieve the effect of traditional cigarette smoking.

[0097] As shown in FIG. 13, the nicotine release amount curve diagram, the abscissa in the figure is the number of puffs, and the ordinate is the nicotine release amount.

[0098] Curve S1 is the nicotine release curve of the traditional temperature control algorithm (detecting the temperature of the first heater 3 or the second heater 21 by the temperature detection unit, and then controlling the heating energy of the first heater 3 or the second heater 21 by the control unit based on the temperature information detected by the temperature detection unit). As can be seen from the figure, the nicotine release of the 5th puff and the 7th puff is sharply decreased or greatly decreased, and the nicotine release is in a downward trend during the entire puffing period (during the 1st puff to the 12th puff).

[0099] Curve S2 is the nicotine release curve corresponding to the control mode of the present application. As can be seen from the figure, the nicotine release is gradually increasing during the entire puffing period (during the 1st puff to the 12th puff), which is consistent with the nicotine release of the traditional cigarette.

[0100] Curve S3 is that the first heater 3 adopts the control mode of the present application, and the second heater 21 adopts the traditional temperature control algorithm. As can be seen from the figure, after the 10th puff, the nicotine release begins to decay, which cannot achieve the effect of puffing the traditional cigarette.

[0101] In an example, the control unit is configured to, during the time period, take one of the first heater 3 and the second heater 21 as the main heating, and the other as the auxiliary heating; wherein the preset energy corresponding to the main heating heater is greater than the preset energy corresponding to the auxiliary heating heater.

[0102] For example, in FIG. 11, during the time period tA1, the first heater 3 is the main heating heater, the second heater 21 is the auxiliary heating heater, the first preset energy QA1 is greater than the second preset energy QB1.

[0103] In an example, the control unit is configured to control the power supply 5 to provide at least one first preset energy to the first heater 3 in a first fixed cycle time.

[0104] For example, in FIG. 12, the cycle time (td1+td2) can be controlled to remain fixed, so as to control the power supply 5 to provide at least one first preset energy QA1 to the first heater 3 in a first fixed cycle time (td1+td2). Generally, the first fixed cycle time is between 0.01 seconds and 20 seconds; or between 0.01 seconds and 15 seconds; or between 0.01 seconds and 10 seconds; or between 0.01 seconds and 5 seconds; or between 0.01 seconds and 1 second; or between 0.01 seconds and 0.5 seconds; or between 0.01 seconds and 0.1 seconds.

[0105] Similarly, the control unit is configured to control the electric core 5 to provide at least one second preset energy to the second heater 21 in a second fixed period of time. It is to be noted that the second fixed period of time can be different from or the same as the first fixed period of time, and the value of the second fixed period of time can be set with reference to the first fixed period of time.

[0106] In an example, the control unit is configured to control the electric core 5 to provide two adjacent first preset energies to the first heater 3 at a first fixed interval of time.

[0107] For example, in FIG. 12, td2 can be controlled to remain fixed, so as to control the electric core 5 to provide two adjacent first preset energies QA1 to the first heater 3 at a first fixed interval of time (td2). Generally, the first fixed interval of time is between 0.001 seconds and 20 seconds, or between 0.001 seconds and 15 seconds, or between 0.001 seconds and 10 seconds, or between 0.001 seconds and 5 seconds, or between 0.001 seconds and 1 second, or between 0.001 seconds and 0.5 seconds, or between 0.001 seconds and 0.1 seconds, or between 0.001 seconds and 0.01 seconds.

[0108] Similarly, the control unit is configured to control the electric core 5 to provide two adjacent second preset energies to the second heater 21 at a second fixed interval of time. Similarly as described above, the second fixed interval of time can be different from or the same as the first fixed interval of time, and the value of the second fixed interval of time can be set with reference to the first fixed interval of time.

[0109] In an example, the control unit is configured to control the electric core 5 to provide heating energy to the first heater 3, determine the heating energy provided by the electric core 5 to the first heater 3, and stop providing heating energy to the first heater 3 if the heating energy provided by the electric core 5 to the first heater 3 reaches the first preset energy.

[0110] Specifically, when the electric core 5 provides heating energy to the first heater 3, the heating energy currently accumulated by the electric core 5 to the first heater 3 is calculated. If the heating energy currently accumulated by the electric core 5 to the first heater 3 reaches the first preset energy, the heating energy provided to the first heater 3 is stopped. Still taking FIG. 12 as an example, the heating energy currently accumulated by the electric core 5 to the first heater 3 is calculated from the start of the time period tA1. When the heating energy currently accumulated by the electric core 5 to the first heater 3 reaches the preset energy QA1, the heating energy provided to the first heater 3 is stopped until the interval of time td2, and the electric core 5 is controlled to provide heating energy to the first heater 3 again. This is repeated until the end of the time period tA1.

[0111] Similarly, the control unit is configured to control the power supply of the heating energy from the battery 5 to the second heater 21; determine the heating energy provided by the battery 5 to the second heater 21; and stop the power supply of the heating energy to the second heater 21 if the heating energy provided by the battery 5 to the second heater 21 reaches the second preset energy.

[0112] In an example, the control unit is configured to control the battery 5 to provide the heating energy to the first heater 3 at a fixed power; determine the time length of the heating energy provided by the battery 5 to the first heater 3; and stop the power supply of the heating energy to the first heater 3 if the time length of the heating energy provided by the battery 5 to the first heater 3 reaches the time length corresponding to the first preset energy.

[0113] Specifically, when the battery 5 provides the heating energy to the first heater 3, the time length of the heating energy provided by the battery 5 to the first heater 3 is calculated. If the cumulative time length of the heating energy provided by the battery 5 to the first heater 3 reaches the time length corresponding to the first preset energy, the power supply of the heating energy to the first heater 3 is stopped. Still taking FIG. 12 as an example, the time length of the heating energy provided by the battery 5 to the first heater 3 is calculated from the starting time of the time period tA1. When the cumulative time length of the heating energy provided by the battery 5 to the first heater 3 reaches td1, the power supply of the heating energy to the first heater 3 is stopped until the interval time td2, and then the battery 5 provides the heating energy to the first heater 3 again. This process is repeated until the end time of the time period tA1.

[0114] It should be noted that the calculation of the time length can be realized by a timer inside the control unit or a timer outside the control unit.

[0115] Similarly, the control unit is configured to control the power supply of the heating energy from the battery 5 to the second heater 21; determine the heating energy provided by the battery 5 to the second heater 21; and stop the power supply of the heating energy to the second heater 21 if the heating energy provided by the battery 5 to the second heater 21 reaches the second preset energy.

[0116] In some embodiments, the circuit 7 comprises a memory or the like for storing program instructions corresponding to the control method in any one of the method embodiments described below, so as to implement the control method in any one of the method embodiments described below. The control method provided by some embodiments of the present application will be described below in conjunction with the exemplary application and implementation of the aerosol generating device provided by the embodiments of the present application. Please refer to FIG. 14, which is a flowchart of the control method provided by some embodiments of the present application. It can be understood that the execution subject of the control method can be one or more control units of the circuit.

[0117] As shown in FIG. 14, the method S10 can specifically include the following steps:

[0118] S11: during at least one time period in the heating period, periodically providing the first preset energy to the first heater according to the first preset energy corresponding to the time period, and periodically providing the second preset energy to the second heater according to the second preset energy corresponding to the time period.

[0119] In an example, the electric core is controlled to provide at least one first preset energy to the first heater in a first fixed cycle time.

[0120] In an example, the electric core is controlled to provide two adjacent first preset energies to the first heater at a first fixed interval time.

[0121] In an example, the electric core is controlled to provide heating energy to the first heater, and the heating energy provided by the electric core to the first heater is determined; if the heating energy provided by the electric core to the first heater reaches the first preset energy, the provision of heating energy to the first heater is stopped.

[0122] In an example, the electric core is controlled to provide heating energy to the first heater at a fixed power, and the duration of the heating energy provided by the electric core to the first heater is determined; if the duration of the heating energy provided by the electric core to the first heater reaches the duration corresponding to the first preset energy, the provision of heating energy to the first heater is stopped.

[0123] In an example, the electric core is controlled to provide at least one second preset energy to the second heater in a second fixed cycle time.

[0124] In an example, the electric core is controlled to provide two adjacent second preset energies to the second heater at a second fixed interval time.

[0125] In an example, the first heater is controlled to start heating before the second heater, or the first heater and the second heater are controlled to start heating at the same time.

[0126] In an example, the first preset energy corresponding to different time periods is not the same, and / or the second preset energy corresponding to different time periods is not the same.

[0127] In an example, one of the first heater and the second heater is used as the main heating and the other is used as the auxiliary heating in the time period.

[0128] The preset energy corresponding to the main heating heater is greater than the preset energy corresponding to the auxiliary heating heater.

[0129] Through the above description of the embodiments, those skilled in the art can clearly understand that the embodiments can be implemented by means of software plus a general hardware platform, and of course, can also be implemented by hardware. Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by a computer program instructing related hardware, and the program can be stored in a computer readable storage medium. When the program is executed, it can include the processes of the above-mentioned embodiment methods. The storage medium can be a magnetic disc, an optical disc, a read-only memory (ROM) or a random access memory (RAM), etc.

[0130] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; under the idea of the present application, the technical features of the above examples or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of the different aspects of the present application as described above. In order to be brief, they are not provided in detail; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An aerosol-generating device, characterized by, The aerosol generating device comprises: an electric core for providing electric power; a first heater configured to be inserted into an interior of an aerosol generating article to heat, and a second heater configured to surround at least a portion of the aerosol generating article to heat; a control unit configured to control the electric core to periodically provide a first preset energy to the first heater according to a first preset energy corresponding to a time period during heating, and to periodically provide a second preset energy to the second heater according to a second preset energy corresponding to the time period.

2. The aerosol-generating device of claim 1, wherein, The control unit is configured to control the electric core to provide at least one first preset energy to the first heater within a first fixed cycle time.

3. The aerosol-generating device of claim 2, wherein, The first fixed cycle time is between 0.01 seconds and 20 seconds.

4. The aerosol-generating device of claim 1, wherein, The control unit is configured to control the electric core to provide two adjacent first preset energies to the first heater at a first fixed interval time.

5. The aerosol-generating device of claim 4, wherein, The first fixed interval time is between 0.001 seconds and 20 seconds.

6. The aerosol-generating device of any one of claims 2-5, wherein, The control unit is configured to control the electric core to provide heating energy to the first heater, determine the heating energy provided by the electric core to the first heater, and stop providing heating energy to the first heater if the heating energy provided by the electric core to the first heater reaches the first preset energy.

7. The aerosol-generating device of any one of claims 2-5, wherein, The control unit is configured to control the electric core to provide heating energy to the first heater at a fixed power, determine the duration of the heating energy provided by the electric core to the first heater, and stop providing heating energy to the first heater if the duration of the heating energy provided by the electric core to the first heater reaches the duration corresponding to the first preset energy.

8. The aerosol-generating device of any one of claims 1-5, wherein, The control unit is configured to control the electric core to provide at least one second preset energy to the second heater within a second fixed cycle time.

9. The aerosol-generating device of any one of claims 1-5, wherein, The control unit is configured to control the electric core to provide two adjacent second preset energies to the second heater at a second fixed interval time. 10.The aerosol-generating device of claim 1, wherein, The first preset energy or the second preset energy is between 0 and 50 joules. 11.The aerosol-generating device of claim 1, wherein, The control unit is configured to control the first heater to start heating before the second heater, or to control the first heater and the second heater to start heating at the same time. 12.The aerosol-generating device of claim 1, wherein, Further comprising a magnetic field generator for generating a varying magnetic field; At least one of the first heater and the second heater is configured to heat by being penetrated by the varying magnetic field. 13.The aerosol-generating device of claim 1, wherein, The first preset energy corresponding to different time periods is not the same, and / or the second preset energy corresponding to different time periods is not the same. 14.The aerosol-generating device of claim 1, wherein, The control unit is configured to use one of the first heater and the second heater as a main heater and the other as an auxiliary heater during the time period. The preset energy corresponding to the main heater is greater than the preset energy corresponding to the auxiliary heater. 15.A control method of an aerosol generating device, the control method comprising: The aerosol generating device comprises: an electric core for providing electric power; a first heater configured to be at least partially inserted into an inside of the aerosol generating article to heat, and a second heater configured to heat around at least a portion of the aerosol generating article; The control method includes: During at least one time period of heating, controlling the electric core to periodically provide the first preset energy to the first heater according to the first preset energy corresponding to the time period, and to periodically provide the second preset energy to the second heater according to the second preset energy corresponding to the time period.

16. An aerosol generating system including an aerosol generating device and an aerosol generating article, characterized in that, an inside of the aerosol generating article is provided with a first heater configured to heat by penetration of a varying magnetic field; The aerosol generating device includes: an electric core for providing electric power; a magnetic field generator for generating a varying magnetic field; a second heater configured to heat around at least a portion of the aerosol generating article; a control unit configured to, during at least one time period of heating, control the electric core to periodically provide the first preset energy to the first heater according to the first preset energy corresponding to the time period, and to periodically provide the second preset energy to the second heater according to the second preset energy corresponding to the time period.

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