Aerosol generating device and control method therefor

Abstract

Disclosed in the present application are an aerosol generating device and a control method therefor. The aerosol generating device comprises: a battery cell, used for providing electric power; a heater, used for heating an aerosol-generating article to generate an aerosol, the heater comprising a first heating part and a second heating part; a circuit, configured to control the electric power provided to the first heating part and the second heating part by the battery cell, such that the heating temperature of the first heating part and the heating temperature of the second heating part alternately change between a first preset temperature and a second preset temperature, wherein the first preset temperature is greater than the second preset temperature. According to the aerosol generating device and the control method therefor, the heating temperature of the first heating part and the heating temperature of the second heating part alternately change between the first preset temperature and the second preset temperature, such that a uniform-temperature area can be formed between the first heating part and the second heating part, thus making cigarette heating more sufficient, and improving the vaping experience of users.

Description

Aerosol generating device and control method thereof

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on January 24, 2024, with application number 202410104390.0 and entitled “Aerosol Generating Device and Control Method Thereof,” the entire contents of which are incorporated herein by reference. Technical Field

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

[0004] Aerosol-generating devices use heaters to heat and bake aerosol-generating products to generate aerosol for inhalation. Users typically expect aerosol-generating devices to generate aerosol as quickly as possible after activation, minimizing the waiting time for aerosol generation. To ensure rapid aerosol generation and a satisfactory consumer experience, some solutions have implemented design improvements to the heater or control method.

[0005] In some solutions known to the inventors, aerosol-generating devices typically employ multiple heaters. The goal is to control some heaters to reach an aerosol-generating temperature first, thereby fully preheating and baking a portion of the aerosol-generating product to generate aerosol. Then, another set of heaters is controlled to reach an aerosol-generating temperature, thereby preheating and baking another portion of the aerosol-generating product to generate aerosol. This approach results in distinct high and low temperature zones, an uneven temperature field, and inadequate heating of cigarettes, which can lead to inadequate heating and burning, impacting the user's puffing experience.

[0006] Application Contents

[0007] In view of this, some embodiments of the present application provide an aerosol generating device and a control method thereof to solve the problem of uneven temperature field in existing aerosol generating devices.

[0008] In a first aspect, some embodiments of the present application provide an aerosol generating device, comprising:

[0009] Battery cells, used to provide electricity;

[0010] a heater for heating the aerosol-generating article to generate an aerosol; the heater comprising a first heating portion and a second heating portion;

[0011] A circuit is configured to control the power provided by the battery cell to the first heating part and the second heating part so that the heating temperature of the first heating part and the heating temperature of the second heating part alternately change between a first preset temperature and a second preset temperature; wherein the first preset temperature is greater than the second preset temperature.

[0012] In one example, further comprising a chamber for removably receiving the aerosol-generating article;

[0013] The first heating portion and the second heating portion are sequentially arranged along an axial direction of the chamber.

[0014] In one example, the invention further comprises a housing having an opening in communication with the chamber, wherein the aerosol-generating article is removably received in the chamber through the opening;

[0015] The first heating portion is disposed closer to the opening than the second heating portion.

[0016] In one example, the device further includes a first temperature sensor disposed on the first heating portion and a second temperature sensor disposed on the second heating portion;

[0017] The circuit is configured to control the power provided by the battery cell to the first heating part and / or the second heating part based on the real-time temperature of the first heating part detected by the first temperature sensor and / or the real-time temperature of the second heating part detected by the second temperature sensor.

[0018] In one example, the circuit is configured to, when a power-on signal is detected, first control the power provided by the battery cell to the first heating part and the second heating part, so that the heating temperature of the first heating part reaches a first preset temperature from a first initial temperature and the heating temperature of the second heating part reaches a second preset temperature from a second initial temperature; and then control the power provided by the battery cell to the first heating part and the second heating part, so that the heating temperature of the first heating part and the heating temperature of the second heating part alternately change between the first preset temperature and the second preset temperature.

[0019] In one example, the duration for the heating temperature of the first heating portion to reach the first preset temperature from the first initial temperature is between 15 and 30 seconds.

[0020] In one example, the circuit is configured to control the first heating part and the second heating part to start heating at the same time; or, control the first heating part to start heating before the second heating part.

[0021] In one example, the heating temperature of the first heating portion and the heating temperature of the second heating portion are alternately changed between a first preset temperature and a second preset temperature, comprising:

[0022] The heating temperature of the first heating part is lowered from the first preset temperature to the second preset temperature and the heating temperature of the second heating part is raised from the second preset temperature to the first preset temperature; or,

[0023] The heating temperature of the first heating portion increases from the second preset temperature to the first preset temperature and the heating temperature of the second heating portion decreases from the first preset temperature to the second preset temperature.

[0024] In one example, the circuit is configured to:

[0025] Controlling the battery cell to stop supplying power to the first heating portion so that the heating temperature of the first heating portion decreases from the first preset temperature to the second preset temperature, and controlling the battery cell to supply power to the second heating portion so that the heating temperature of the second heating portion increases from the second preset temperature to the first preset temperature; or,

[0026] The battery cell is controlled to supply power to the first heating part so that the heating temperature of the first heating part rises from the second preset temperature to the first preset temperature, and the battery cell is controlled to stop supplying power to the second heating part so that the heating temperature of the second heating part drops from the first preset temperature to the second preset temperature.

[0027] In one example, the circuit is configured to:

[0028] controlling the power supplied by the battery cell to the second heating portion so that the duration of the second heating portion rising from the second preset temperature to the first preset temperature is the same as the duration of the first heating portion falling from the first preset temperature to the second preset temperature; or

[0029] The power provided by the battery cell to the first heating part is controlled so that the duration of the heating temperature of the first heating part rising from the second preset temperature to the first preset temperature is the same as the duration of the heating temperature of the second heating part falling from the first preset temperature to the second preset temperature.

[0030] In one example, the circuit is configured to:

[0031] When the heating temperature of the first heating portion has dropped from the first preset temperature to the second preset temperature and the heating temperature of the second heating portion has not yet risen from the second preset temperature to the first preset temperature, controlling the power supplied by the battery cell to the first heating portion so that the heating temperature of the first heating portion is maintained at the second preset temperature until the heating temperature of the second heating portion rises to the first preset temperature; or

[0032] When the heating temperature of the first heating portion has not yet dropped from the first preset temperature to the second preset temperature and the heating temperature of the second heating portion has risen from the second preset temperature to the first preset temperature, controlling the power supplied by the battery cell to the second heating portion so that the heating temperature of the second heating portion is maintained at the first preset temperature until the heating temperature of the first heating portion drops to the second preset temperature;

[0033] When the heating temperature of the first heating portion has risen from the second preset temperature to the first preset temperature and the heating temperature of the second heating portion has not yet dropped from the first preset temperature to the second preset temperature, controlling the power supplied by the battery cell to the first heating portion so that the heating temperature of the first heating portion is maintained at the first preset temperature until the heating temperature of the second heating portion drops to the second preset temperature; or

[0034] When the heating temperature of the first heating part has not yet risen from the second preset temperature to the first preset temperature and the heating temperature of the second heating part has dropped from the first preset temperature to the second preset temperature, the power supplied by the battery cell to the second heating part is controlled so that the heating temperature of the first heating part is maintained at the second preset temperature until the heating temperature of the first heating part rises to the first preset temperature.

[0035] In one example, the heating temperature of the first heating portion and the heating temperature of the second heating portion are alternately changed between a first preset temperature and a second preset temperature until the puffing ends.

[0036] In a second aspect, some embodiments of the present application provide a method for controlling an aerosol-generating device, the aerosol-generating device comprising a battery cell for providing power and a heater for heating an aerosol-generating article, the heater comprising a first heating portion and a second heating portion;

[0037] The control method includes:

[0038] The power provided by the battery cell to the first heating part and the second heating part is controlled so that the heating temperature of the first heating part and the heating temperature of the second heating part alternately change between a first preset temperature and a second preset temperature; wherein the first preset temperature is greater than the second preset temperature.

[0039] The aerosol generating device and control method thereof provided in the embodiments of the present application are such that the heating temperature of the first heating part and the heating temperature of the second heating part alternately change between a first preset temperature and a second preset temperature, thereby forming a uniform temperature zone between the first heating part and the second heating part, making the cigarette heating more sufficient and uniform, thereby improving the user's smoking experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0041] FIG1 is a schematic diagram of an aerosol generating device and an aerosol generating article in some embodiments of the present application;

[0042] FIG2 is a schematic structural diagram of an aerosol generating device in some embodiments of the present application;

[0043] FIG3 is a flow chart of a control method in some embodiments of the present application;

[0044] FIG4 is a schematic diagram of temperature changes of the first heating portion and the second heating portion during operation in some embodiments of the present application;

[0045] FIG5 is a schematic diagram of heating energy supply to the first heating part and the second heating part in some embodiments of the present application. DETAILED DESCRIPTION

[0046] The present application is described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art to further understand the present application, but are not intended to limit the present application in any form. It should be noted that those skilled in the art may make several variations and improvements without departing from the scope of the present application. These all fall within the scope of protection of the present application.

[0047] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0048] It should be noted that, if there is no conflict, the various features in the embodiments of the present application can be combined with each other and are all within the scope of protection of the present application. In addition, although the functional modules are divided in the device schematic and the logical order is shown in the flow chart, in some cases, the steps shown or described can be performed in a different order than the module division in the device or the order in the flow chart. In addition, the words "first", "second", "third", etc. used herein do not limit the data and execution order, but only distinguish between the same items or similar items with basically the same functions and effects.

[0049] Unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification and in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" as used in this specification includes any and all combinations of one or more of the relevant listed items.

[0050] In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as they do not conflict with each other.

[0051] 1 and 2 show an aerosol generating device 10 provided in some embodiments of the present application, comprising: a chamber 11 , a heater 12 , a battery cell 14 , and a circuit 15 . The circuit 15 is electrically connected to the battery cell 14 and the heater 12 .

[0052] The chamber 11 is for removably receiving an aerosol-generating article 20 .

[0053] The aerosol-generating article 20 contains a matrix capable of releasing volatile compounds that can form an aerosol. The matrix of volatile compounds can be released by heating the aerosol-generating article.

[0054] The heater 12 is used to heat the aerosol-generating article 20 to generate an inhalable aerosol.

[0055] The heater 12 includes a tubular base 121 extending axially along and surrounding the chamber 11, and a first heating portion 122 and a second heating portion 123 disposed on the inner or outer surface of the base 121. The first heating portion 122 and the second heating portion 123 can be arranged sequentially along the axial direction of the chamber 11. The first heating portion 122 is disposed closer to the top end or aerosol outlet of the aerosol generating device 10 than the second heating portion 123. For example, the aerosol generating device 10 further includes a housing 16 having an opening 161 communicating with the chamber 11, through which the aerosol generating article 20 is removably received in the chamber 11; the first heating portion 122 is disposed closer to the opening 161 than the second heating portion 123. The first heating portion 122 and the second heating portion 123 can also be arranged sequentially along the circumferential direction of the chamber 11. The first heating part 122 and the second heating part 123 can be physically isolated from each other to avoid heat transfer between the first heating part 122 and the second heating part 123; in other examples, the first heating part 122 and the second heating part 123 may not be physically isolated from each other, and the first heating part 122 and the second heating part 123 may conduct heat directly through contact or indirectly through other parts.

[0056] It is understood that the first heating portion 122 and the second heating portion 123 are two independent electric heating elements that can be controlled for heating separately. For example, at one time, the first heating portion 122 can be controlled for heating, while at another time, the second heating portion 123 can be controlled for heating, or the first heating portion 122 and the second heating portion 123 can be controlled for heating simultaneously.

[0057] In some embodiments, the first heating part 122 or the second heating part 123 is a resistive heating circuit arranged on the outer surface of the substrate 121, such as a conductive track, a MESH heating net, a heating wire, etc. The resistive heating circuit is coupled to the battery cell 14 through a lead 13 or other conductive medium, generates heat after receiving electricity provided by the battery cell 14, and transfers the heating energy generated by the heat to the aerosol generating product 20 through the substrate 121.

[0058] In some embodiments, the first heating portion 122 or the second heating portion 123 may also be an infrared electrothermal coating formed on the inner surface or outer surface of the substrate 121. The infrared electrothermal coating is coupled to the battery cell 14 through the wire 13 or other conductive medium. After receiving the electricity provided by the battery cell 14, it generates heat and radiates infrared rays. The aerosol generating product 20 may be heated through the infrared-transmissive substrate 121 or directly radiated.

[0059] It should be noted that the first heating portion 122 or the second heating portion 123 is not limited to the above-described configuration. For example, the first heating portion 122 or the second heating portion 123 may be configured to generate heat when penetrated by a changing magnetic field. For another example, there may be three or more heating portions disposed on the base 121.

[0060] The temperature sensors include a first temperature sensor 1221 disposed on the first heating portion 122 to sense the temperature of the first heating portion 122, and a second temperature sensor 1231 disposed on the second heating portion 123 to sense the temperature of the second heating portion 123. The first temperature sensor 1221 can be disposed on the outer surface of the first heating portion 122 or sandwiched between the base 121 and the first heating portion 122; the second temperature sensor 1231 is similar.

[0061] The battery cell 14 provides power for operating the aerosol generating device 10. For example, the battery cell 14 can provide power to the heater 12, which generates heat upon receiving the power to generate heating energy. Furthermore, the battery cell 14 can provide power required to operate other components provided in the aerosol generating device 10. The battery cell 14 can be a rechargeable battery or a disposable battery. The battery cell 14 can be, but is not limited to, a lithium iron phosphate (LiFePO4) battery. For example, the battery cell 14 can be a lithium cobalt oxide (LiCoO2) battery or a lithium titanate battery.

[0062] The circuit 15 includes a controller that can control the overall operation of the aerosol generating device 10. The circuit 15 controls the operation of the battery cell 14 and the heater 12. Based on the real-time temperature of the first heating portion 122 detected by the first temperature sensor 1221 and / or the real-time temperature of the second heating portion 123 detected by the second temperature sensor 1231, the circuit 15 can control the power supplied by the battery cell 14 to the first heating portion 122 and / or the second heating portion 123, thereby controlling the temperature of the first heating portion 122 and / or the second heating portion 123. In some embodiments, the circuit 15 includes a memory, etc., for storing program instructions corresponding to any of the control methods described in the following method embodiments, thereby implementing any of the control methods described in the following method embodiments.

[0063] The following describes the control methods provided in some embodiments of the present application, using exemplary applications and implementations of the aerosol generating devices provided in the present application. Please refer to Figure 3, which is a flow chart illustrating the control methods provided in some embodiments of the present application. It is understood that the execution entity of the control method can be one or more controllers of a circuit.

[0064] As shown in FIG3 , the method S10 may specifically include the following steps:

[0065] S11: Control the power provided by the battery cell 14 to the first heating part 122 and the second heating part 123 so that the heating temperature of the first heating part 122 and the heating temperature of the second heating part 123 alternately change between a first preset temperature and a second preset temperature; wherein the first preset temperature is greater than the second preset temperature.

[0066] In this step, the heating temperature of the first heating part 122 and the heating temperature of the second heating part 123 are alternately changed between the first preset temperature and the second preset temperature, including:

[0067] The heating temperature of the first heating part 122 is lowered from the first preset temperature to the second preset temperature and the heating temperature of the second heating part 123 is raised from the second preset temperature to the first preset temperature; or,

[0068] The heating temperature of the first heating portion 122 rises from the second preset temperature to the first preset temperature and the heating temperature of the second heating portion 123 drops from the first preset temperature to the second preset temperature.

[0069] Taking Figure 4 as an example, curve A in the figure represents the first heating portion 122, curve B represents the second heating portion 123, the first preset temperature is T2, and the second preset temperature is T1. During the period t0 to t1, the heating temperature of the first heating portion 122 decreases from T2 to T1, and the heating temperature of the second heating portion 123 increases from T1 to T2. During the period t1 to t2, the heating temperature of the first heating portion 122 increases from T1 to T2, and the heating temperature of the second heating portion 123 decreases from T2 to T1.

[0070] The heating temperature of the first heating part 122 and the heating temperature of the second heating part 123 alternately change between the first preset temperature and the second preset temperature, and may continue until the end of the puffing, or may end when the puffing is about to end.

[0071] In one example, when a power-on signal is detected, the battery cell 14 is first controlled to provide power to the first heating part 122 and the second heating part 123, so that the heating temperature of the first heating part 122 reaches a first preset temperature from a first initial temperature and the heating temperature of the second heating part 123 reaches a second preset temperature from a second initial temperature; then the battery cell 14 is controlled to provide power to the first heating part 122 and the second heating part 123, so that the heating temperature of the first heating part 122 and the heating temperature of the second heating part 123 alternately change between the first preset temperature and the second preset temperature.

[0072] In this example, the power-on signal can be a signal generated by a button, a puff sensor, or the like. Upon detecting the power-on signal, the temperature of the first heating portion 122 needs to be rapidly increased, for example, from a first initial temperature to 200°C to 350°C, specifically 280°C, to generate aerosol or to generate a satisfactory amount of aerosol to meet the user's puffing needs. Generally, the duration for the first heating portion 122 to reach the first preset temperature from the first initial temperature is between 15 and 30 seconds.

[0073] In this example, the first initial temperature and the second initial temperature are both ambient temperatures and can be the same or different. The first heating section 122 and the second heating section 123 can be controlled to start heating simultaneously, raising the temperature from the first initial temperature to the first preset temperature and from the second initial temperature to the second preset temperature, respectively. As shown in FIG4 , starting from the same initial temperature, the temperatures are raised to T2 and T1, respectively. Alternatively, the first heating section 122 can be controlled to start heating before the second heating section 123.

[0074] In one example, the battery cell 14 is controlled to stop supplying power to the first heating portion 122 so that the heating temperature of the first heating portion 122 decreases from the first preset temperature to the second preset temperature, and the battery cell 14 is controlled to supply power to the second heating portion 123 so that the heating temperature of the second heating portion 123 increases from the second preset temperature to the first preset temperature; or

[0075] The battery cell 14 is controlled to provide power to the first heating part 122 so that the heating temperature of the first heating part 122 rises from the second preset temperature to the first preset temperature, and the battery cell 14 is controlled to stop providing power to the second heating part 123 so that the heating temperature of the second heating part 123 drops from the first preset temperature to the second preset temperature.

[0076] Taking FIG5 as an example, in the time period t in the figure, the power provided by the battery cell 14 to the first heating portion 122 is first controlled to be a first power (constant or variable), so that the heating temperature of the first heating portion 122 increases from T1 to T2, and the battery cell 14 is controlled to stop providing power to the second heating portion 123, so that the heating temperature of the second heating portion 123 decreases from T2 to T1. Then, the battery cell 14 is controlled to stop providing power to the first heating portion 122, so that the heating temperature of the first heating portion 122 decreases from T2 to T1, and the power provided by the battery cell 14 to the second heating portion 123 is controlled to be a first power (assuming that the power is the same as the power provided to the first heating portion 122, but it may be different in practice), so that the heating temperature of the second heating portion 123 increases from T1 to T2.

[0077] In one example, the power provided by the battery cell 14 to the second heating portion 123 is controlled so that the duration of the heating temperature of the second heating portion 123 rising from the second preset temperature to the first preset temperature is the same as the duration of the heating temperature of the first heating portion 122 falling from the first preset temperature to the second preset temperature; or,

[0078] The power provided by the battery cell 14 to the first heating part 122 is controlled so that the duration of the heating temperature of the first heating part 122 rising from the second preset temperature to the first preset temperature is the same as the duration of the heating temperature of the second heating part 123 falling from the first preset temperature to the second preset temperature.

[0079] In this example, by controlling the power provided by the battery cell 14 to the first heating part 122 or the second heating part 123, when the first heating part 122 reaches the temperature T1, the second heating part 123 also reaches the temperature T2 at the same time, or, when the first heating part 122 reaches the temperature T2, the second heating part 123 also reaches the temperature T1 at the same time, thereby causing the high and low temperature fields between the first heating part and the second heating part to alternately change, forming a uniform temperature zone between the first heating part and the second heating part, for example, a uniform temperature zone with a temperature of T, so that the cigarette is heated more fully and evenly.

[0080] In one example, when the heating temperature of the first heating portion 122 has dropped from the first preset temperature to the second preset temperature and the heating temperature of the second heating portion 123 has not yet risen from the second preset temperature to the first preset temperature, the power provided by the battery cell 14 to the first heating portion 122 is controlled so that the heating temperature of the first heating portion 122 is maintained at the second preset temperature until the heating temperature of the second heating portion 123 rises to the first preset temperature; or

[0081] When the heating temperature of the first heating portion 122 has not yet dropped from the first preset temperature to the second preset temperature and the heating temperature of the second heating portion 123 has already risen from the second preset temperature to the first preset temperature, controlling the power supplied by the battery cell 14 to the second heating portion 123 so that the heating temperature of the second heating portion 123 is maintained at the first preset temperature until the heating temperature of the first heating portion 122 drops to the second preset temperature;

[0082] When the heating temperature of the first heating portion 122 has risen from the second preset temperature to the first preset temperature and the heating temperature of the second heating portion 123 has not yet dropped from the first preset temperature to the second preset temperature, controlling the power provided by the battery cell 14 to the first heating portion 122 so that the heating temperature of the first heating portion 122 is maintained at the first preset temperature until the heating temperature of the second heating portion 123 drops to the second preset temperature; or,

[0083] When the heating temperature of the first heating part 122 has not yet risen from the second preset temperature to the first preset temperature and the heating temperature of the second heating part 123 has dropped from the first preset temperature to the second preset temperature, the power provided by the battery cell 14 to the second heating part 123 is controlled so that the heating temperature of the first heating part 122 is maintained at the second preset temperature until the heating temperature of the first heating part 122 rises to the first preset temperature.

[0084] In this example, if the first heating portion 122 reaches temperature T1 but the second heating portion 123 has not yet reached temperature T2, the power supplied by the battery cells 14 to the first heating portion 122 is controlled to maintain its temperature at T1. Similarly, if the first heating portion 122 reaches temperature T2 but the second heating portion 123 has not yet reached temperature T1, the power supplied by the battery cells 14 to the first heating portion 122 is controlled to maintain its temperature at T2. The second heating portion 123 operates similarly.

[0085] It should be noted that the device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of this embodiment.

[0086] Through the description of the above embodiments, it can be clearly understood by those skilled in the art that each embodiment can be implemented by means of software plus a general hardware platform, or of course by hardware. It can be understood by those skilled in the art that all or part of the processes in the above embodiment methods can be implemented by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above methods. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM), etc.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Based on the concept of the present application, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes in different aspects of the present application as described above. For the sake of simplicity, they are not provided in detail. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An aerosol generating device, characterized in that, Comprising: a battery cell for providing power; a heater for heating the aerosol generating article to generate aerosol; the heater includes a first heating part and a second heating part; a circuit configured to control the power provided by the battery cell to the first heating part and the second heating part, so that the heating temperature of the first heating part and the heating temperature of the second heating part alternately vary between a first preset temperature and a second preset temperature; wherein, the first preset temperature is greater than the second preset temperature.

2. The aerosol generating device according to claim 1, characterized in that It further includes a chamber for removably receiving the aerosol generating article; The first heating part and the second heating part are arranged in sequence along the axial direction of the chamber.

3. The aerosol generating device according to claim 2, characterized in that, It further includes a housing having an opening communicating with the chamber, and the aerosol generating article is removably received in the chamber through the opening; The first heating part is arranged closer to the opening than the second heating part.

4. The aerosol generating device according to claim 1, characterized in that, It further includes a first temperature sensor disposed on the first heating part and a second temperature sensor disposed on the second heating part; The circuit is configured to control the power provided by the battery cell to the first heating part and / or the second heating part based on the real-time temperature of the first heating part detected by the first temperature sensor and / or the real-time temperature of the second heating part detected by the second temperature sensor.

5. The aerosol generating device according to claim 1, characterized in that, The circuit is configured to, when detecting a power-on signal, first control the power provided by the battery cell to the first heating part and the second heating part, so that the heating temperature of the first heating part reaches the first preset temperature from a first initial temperature and the heating temperature of the second heating part reaches the second preset temperature from a second initial temperature; then control the power provided by the battery cell to the first heating part and the second heating part, so that the heating temperature of the first heating part and the heating temperature of the second heating part alternately vary between the first preset temperature and the second preset temperature.

6. The aerosol generating device according to claim 5, wherein, The duration for the heating temperature of the first heating part to reach the first preset temperature from the first initial temperature is between 15 and 30 s.

7. The aerosol generating device according to claim 5, wherein, The circuit is configured to control the first heating part and the second heating part to start heating simultaneously; or, control the first heating part to start heating before the second heating part.

8. The aerosol generating device according to claim 1, characterized in that, The heating temperature of the first heating part and the heating temperature of the second heating part alternately vary between the first preset temperature and the second preset temperature, including: the heating temperature of the first heating part drops from the first preset temperature to the second preset temperature and the heating temperature of the second heating part rises from the second preset temperature to the first preset temperature; or, the heating temperature of the first heating part rises from the second preset temperature to the first preset temperature and the heating temperature of the second heating part drops from the first preset temperature to the second preset temperature.

9. The aerosol generating device according to claim 8, wherein, The circuit is configured to: Control the battery cell to stop supplying power to the first heating part, so that the heating temperature of the first heating part drops from the first preset temperature to the second preset temperature, and control the power supplied by the battery cell to the second heating part, so that the heating temperature of the second heating part rises from the second preset temperature to the first preset temperature; or, Control the power supplied by the battery cell to the first heating part, so that the heating temperature of the first heating part rises from the second preset temperature to the first preset temperature, and control the battery cell to stop supplying power to the second heating part, so that the heating temperature of the second heating part drops from the first preset temperature to the second preset temperature.

10. The aerosol generating device according to claim 9, wherein, The circuit is configured to: Control the power supplied by the battery cell to the second heating part, so that the duration for which the heating temperature of the second heating part rises from the second preset temperature to the first preset temperature is the same as the duration for which the heating temperature of the first heating part drops from the first preset temperature to the second preset temperature; or, Control the power supplied by the battery cell to the first heating part, so that the duration for which the heating temperature of the first heating part rises from the second preset temperature to the first preset temperature is the same as the duration for which the heating temperature of the second heating part drops from the first preset temperature to the second preset temperature.

11. The aerosol generating device according to claim 8, characterized in that, The circuit is configured to: When the heating temperature of the first heating part has dropped from the first preset temperature to the second preset temperature and the heating temperature of the second heating part has not yet risen from the second preset temperature to the first preset temperature, control the power supplied by the battery cell to the first heating part, so that the heating temperature of the first heating part remains at the second preset temperature until the heating temperature of the second heating part rises to the first preset temperature; or, When the heating temperature of the first heating part has not yet dropped from the first preset temperature to the second preset temperature and the heating temperature of the second heating part has risen from the second preset temperature to the first preset temperature, control the power supplied by the battery cell to the second heating part, so that the heating temperature of the second heating part remains at the first preset temperature until the heating temperature of the first heating part drops to the second preset temperature; When the heating temperature of the first heating part has risen from the second preset temperature to the first preset temperature and the heating temperature of the second heating part has not yet dropped from the first preset temperature to the second preset temperature, control the power supplied by the battery cell to the first heating part, so that the heating temperature of the first heating part remains at the first preset temperature until the heating temperature of the second heating part drops to the second preset temperature; or, When the heating temperature of the first heating part has not yet risen from the second preset temperature to the first preset temperature and the heating temperature of the second heating part has dropped from the first preset temperature to the second preset temperature, the power supplied by the battery cell to the second heating part is controlled so that the heating temperature of the first heating part is maintained at the second preset temperature until the heating temperature of the first heating part rises to the first preset temperature.

12. The aerosol generating device according to claim 1, wherein, The heating temperature of the first heating part and the heating temperature of the second heating part are alternately changed between a first preset temperature and a second preset temperature until the puffing ends.

13. A control method for an aerosol generating device, characterized in that, The aerosol generating device comprises a battery cell for providing power and a heater for heating the aerosol generating article, the heater comprising a first heating portion and a second heating portion; The control method includes: The power provided by the battery cell to the first heating part and the second heating part is controlled so that the heating temperature of the first heating part and the heating temperature of the second heating part alternately change between a first preset temperature and a second preset temperature; wherein the first preset temperature is greater than the second preset temperature.

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