Aerosol generating device and detection method

Abstract

The invention provides an aerosol generating device and a detection method, and the device comprises a heater which is configured to heat an aerosol generating product so as to generate aerosol; the battery cell is used for providing electric power for the heater; and the controller is configured to intermittently obtain the real-time voltage value of the battery cell and identify a suction action applied to the aerosol generating product or the aerosol generating device by a user based on the change of the real-time voltage value of the battery cell. According to the method, the real-time voltage value of the battery cell is obtained, and the suction action of the user is recognized based on the change of the real-time voltage value of the battery cell; no additional sensor is needed to detect and judge whether the aerosol generating device is sucked or not, so that the cost is reduced, the complicated structural design is avoided, and the miniaturization of the product is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of aerosol generation, and particularly to an aerosol generation device and a detection method. Background Art

[0002] Articles such as cigarettes, cigars, etc. burn tobacco during use to generate tobacco smoke. Attempts have been made to provide alternatives to these tobacco-burning articles by producing products that release compounds without burning. Examples of such products are so-called heat-not-burn products, also referred to as tobacco heating products or tobacco heating devices, which release compounds by heating materials without burning the materials. The materials can be, for example, tobacco or other non-tobacco products or combinations, such as blended mixtures that may or may not contain nicotine.

[0003] The prior art typically uses aspiration sensors, etc. to detect the user's aspiration action. The problem with this method is that the cost of the sensor is relatively high, the structural design is complex, and it is not conducive to the miniaturization of the product. Summary of the Invention

[0004] The present application provides an aerosol generation device and a detection method, aiming to solve the problems of relatively high cost, complex structural design, and being not conducive to the miniaturization of the product in the existing aerosol generation device when using a sensor to detect the user's aspiration action.

[0005] On the one hand, the present application provides an aerosol generation device, including:

[0006] A heater configured to heat an aerosol generation article to generate an aerosol;

[0007] A battery cell for supplying power to the heater;

[0008] A controller configured to intermittently obtain the real-time voltage value of the battery cell and identify the aspiration action applied by the user to the aerosol generation article or the aerosol generation device based on the change in the real-time voltage value of the battery cell.

[0009] In one example, it further includes a voltage detection circuit for detecting the real-time voltage value across the battery cell.

[0010] In one example, the controller is configured to control the heater to enter the aspiration stage and obtain the real-time voltage value of the battery cell when the heater enters the aspiration stage.

[0011] In one example, the controller is configured to control the power provided by the cell to the heater so that the temperature of the heater is maintained at a preset target temperature; and during the process that the temperature of the heater is maintained at the preset target temperature, identify the user's puffing action based on the change of the real-time voltage value of the cell.

[0012] In one example, the controller is configured to identify the user's puffing action based on the derivative value of the real-time voltage value.

[0013] In one example, the derivative value is the change amount of the average value calculated based on a plurality of the real-time voltage values.

[0014] In one example, the controller is configured to determine whether the puffing action occurs according to the comparison result between the derivative value of the real-time voltage value and a first preset threshold; and / or determine whether the puffing action occurs according to the comparison result between the sum of the derivative values of a plurality of the real-time voltage values and a second preset threshold.

[0015] In one example, the controller is configured to determine that the puffing action is occurring if the derivative value of the real-time voltage value is less than the first preset threshold; and / or determine that the puffing action is occurring if the sum of the derivative values of a plurality of the real-time voltage values is less than the second preset threshold.

[0016] In one example, the controller is configured to calculate the puffing duration of the aerosol generating device when it is determined that the aerosol generating device is puffed.

[0017] In one example, the controller is configured to control the heater to stop heating when the puffing duration of the aerosol generating device reaches or exceeds a first preset duration threshold.

[0018] In one example, the puffing action is defined between the start of puffing and the end of puffing. The controller is further configured to determine the start of puffing based on the degree of decrease of the derivative value of the real-time voltage value, and determine the end of puffing based on the degree of increase of the derivative value of the real-time voltage value.

[0019] In one example, the controller is configured to adjust the power provided by the cell to the heater when it is determined that the aerosol generating device is puffed.

[0020] In one example, the controller is configured to first calculate the average value of a plurality of the real-time voltage values obtained within a first preset duration, then gradually accumulate a plurality of consecutive average values to obtain a plurality of adjacent accumulated values within a second preset duration, and finally calculate the change amount of the accumulated values within the second preset duration to obtain the derivative value of the real-time voltage value.

[0021] On the other hand, the present application provides a method for detecting a puffing action of an aerosol generating device, the aerosol generating device comprising:

[0022] a heater configured to heat an aerosol generating article to generate an aerosol;

[0023] a battery cell for supplying power to the heater;

[0024] The method comprises:

[0025] intermittently obtaining a real-time voltage value of the battery cell, and identifying a puffing action applied by a user to the aerosol generating article or the aerosol generating device based on a change in the real-time voltage value of the battery cell.

[0026] The aerosol generating device and the detection method provided by the present application identify a user's puffing action by obtaining the real-time voltage value of the battery cell and based on the change in the real-time voltage value of the battery cell; there is no need to separately provide a sensor to detect and judge whether the aerosol generating device is puffed, which reduces the cost, avoids complex structural design, and is conducive to miniaturization of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplary illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated, and the drawings in the figures do not constitute a scale limitation.

[0028] Figure 1 is a schematic diagram of an aerosol generating device provided by an embodiment of the present application;

[0029] Figure 2 is another schematic diagram of an aerosol generating device provided by an embodiment of the present application;

[0030] Figure 3 is a schematic diagram of a heating curve provided by an embodiment of the present application;

[0031] Figure 4 is a flowchart of a method for detecting a puffing action of an aerosol generating device provided by an embodiment of the present application;

[0032] Figure 5 is a schematic diagram of a circuit for detecting a real-time voltage value of a battery cell provided by an embodiment of the present application;

[0033] Figure 6 is a schematic diagram of a derivative value of a real-time voltage value provided by an embodiment of the present application;

[0034] Figure 7It is a schematic diagram of another derivative value of the real-time voltage value provided by the embodiment of the present application. Detailed implementation mode

[0035] To facilitate the understanding of the present application, the present application will be described in more detail below in conjunction with the drawings and specific implementation modes. Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs. The terms used in this specification in the description of the present application are only for the purpose of describing specific implementation modes and are not used to limit the present application. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0036] Figure 1 It is a schematic diagram of the structure of an aerosol generating device provided by the embodiment of the present application.

[0037] As Figure 1 shown, the aerosol generating device 10 includes a battery cell 101, a circuit 102, and a heater 103. In addition, the aerosol generating device 10 has an internal space defined by a housing, and an aerosol generating article (such as a cigarette) can be inserted into the internal space of the aerosol generating device 10.

[0038] In Figure 1 only the elements of the aerosol generating device 10 related to this embodiment are shown. Accordingly, those skilled in the art related to this embodiment should understand that the aerosol generating device 10 may further include general elements in addition to Figure 1 the elements shown in

[0039] The battery cell 101 provides the power for operating the aerosol generating device 10. For example, the battery cell 101 can provide power to heat the heater 103 and can provide the power required to operate the circuit 102. In addition, the battery cell 101 can provide the power required to operate other elements provided in the aerosol generating device 10.

[0040] The battery cell 101 can be, but is not limited to, a lithium iron phosphate (LiFePO4) battery. For example, the battery cell 101 can be a lithium cobalt oxide (LiCoO2) battery or a lithium titanate battery. The battery cell 101 can be a rechargeable battery or a disposable battery.

[0041] When a cigarette is inserted into the aerosol generating device 10, the aerosol generating device 10 heats the heater 103 with the power provided by the battery cell 101. The heater 103 raises the temperature of the matrix in the cigarette to generate aerosol. The generated aerosol is transmitted to the user for suction through the filter section of the cigarette. However, even when a cigarette is not inserted into the aerosol generating device 10, the aerosol generating device 10 can still heat the heater 103.

[0042] The heater 103 can be a central heating method (contacting the aerosol generating article through the outer periphery of the heating body or the heat generating body) and a peripheral heating method (the heating body or the heat generating body wrapping the aerosol generating article). The heater 103 can also heat the aerosol generating article by one or several of heat conduction, electromagnetic induction, chemical reaction, infrared action, resonance, photoelectric conversion, and photothermal conversion to generate an aerosol for inhalation.

[0043] The circuit 102 can control the overall operation of the aerosol generating device 10. Specifically, the circuit 102 not only controls the operations of the battery cell 101 and the heater 103, but also controls the operations of other components in the aerosol generating device 10. In addition, the circuit 102 can determine whether the aerosol generating device 10 can operate by checking the states of the components of the aerosol generating device 10.

[0044] The circuit 102 includes a controller. The controller is a hardware component configured to control the overall operation of the aerosol generating device. The controller can include at least one processor. The processor can include a logic gate array, or can include a combination of a general microprocessor and a memory storing programs executable by the microprocessor. In addition, those skilled in the art should understand that the circuit 102 can include another type of hardware.

[0045] For example, the circuit 102 can control the operation of the heater 103. The circuit 102 can control the amount of power supplied to the heater 130 and the time for continuously supplying power to the heater 103, so that the heater 103 is heated to a predetermined temperature or maintained at an appropriate temperature. In addition, the circuit 102 can check the state of the battery cell 101 (such as the remaining power of the battery cell 101), and if necessary, can generate a notification signal.

[0046] In addition, the circuit 102 can check whether the user is sucking and the sucking duration, and can control the sucking duration. In addition, the circuit 102 can check the time for which the aerosol generating device 10 continuously operates.

[0047] In addition to the battery cell 101, the circuit 102, and the heater 103, the aerosol generating device 10 can also include general components.

[0048] For example, the aerosol generating device 10 may include a display for outputting visual information or a motor for outputting tactile information. For example, when the aerosol generating device 10 includes a display, the circuit 102 may send information about the state of the aerosol generating device 10 (e.g., whether the aerosol generating device 10 can be used), information about the heater 103 (e.g., preheating start, preheating in progress, or preheating completed), information about the battery cell 101 (e.g., remaining power of the battery cell 101, whether the battery cell 101 can be used), information related to the reset of the aerosol generating device 10 (e.g., reset time, reset in progress, or reset completed), information related to the cleaning of the aerosol generating device 10 (e.g., cleaning time, need to clean, cleaning in progress, or cleaning completed), information related to the charging of the aerosol generating device 10 (e.g., need to charge, charging in progress, or charging completed), information related to puffing (e.g., number of puffs, puff end notification), or information related to safety (e.g., usage time) to the user. Alternatively, when the aerosol generating device 10 includes a motor, the circuit 102 may generate a vibration signal by using the motor and may send the above information to the user.

[0049] In addition, the aerosol generating device 10 may include at least one input device (e.g., a button) used by the user to control the functions of the aerosol generating device 10. For example, the user may perform various functions by using the input device of the aerosol generating device 10. The desired function among the multiple functions of the aerosol generating device 10 may be performed by adjusting the number of times the user presses the input device (e.g., once or twice) or the time the user continuously presses the input device (e.g., 0.1 second or 0.2 second). As the user operates the input device, the aerosol generating device 10 may perform functions such as heating the heater 103, adjusting the temperature of the heater 103, cleaning the space where the cigarette rod is inserted, checking whether the aerosol generating device 10 can operate, displaying the remaining power (usable power) of the battery cell 101, and resetting the aerosol generating device 10. However, the functions of the aerosol generating device 10 are not limited thereto.

[0050] Figure 2 It is a schematic diagram of another aerosol generating device provided by an embodiment of the present application.

[0051] As Figure 2 shown, the aerosol generating device includes an atomizer 200 and a power supply assembly 300, and the atomizer 200 is detachably connected to the power supply assembly 300. In other examples, it is also feasible that the atomizer 200 is non-detachably connected to the power supply assembly 300, that is, integrally formed.

[0052] The atomizer 200 includes a liquid storage cavity (not shown) for storing another aerosol generating article, such as e-liquid, and a heater 201. Under the action of the electric power provided by the power supply assembly 300, the heater 201 heats the e-liquid to form an inhalable aerosol.

[0053] The atomizer 200 may further include a liquid transfer unit (not shown). The liquid transfer unit can be made of materials such as cotton fiber, metal fiber, ceramic fiber, glass fiber, porous ceramics, etc. Through capillary action, the e-liquid stored in the liquid storage cavity can be transferred to the heater 201.

[0054] The power supply assembly 300 includes a battery cell 301 and a circuit 302.

[0055] The battery cell 301 provides the electric power for operating the aerosol generating device. The battery cell 301 can be a rechargeable battery cell or a disposable battery cell.

[0056] The circuit 302 can control the overall operation of the aerosol generating device. The circuit 302 not only controls the operations of the battery cell 301 and the heater 201, but also controls the operations of other components in the aerosol generating device.

[0057] In one example, the circuit 302 includes a controller. The controller is a hardware component configured to control the overall operation of the aerosol generating device. The controller can include at least one processor. The processor can be implemented as an array of multiple logic gates, or can be implemented as a combination of a general microprocessor and a memory, in which a program executable in the microprocessor is stored. Those of ordinary skill in the art will understand that the processor can be implemented in other forms of hardware.

[0058] It should be noted that in Figure 2 the example, the heater 201 can be a common resistance heating element, an electromagnetic induction heating element, etc.

[0059] Figure 3 is a schematic diagram of the heating curve of the heater 103 provided by the embodiment of the present application.

[0060] As Figure 3 shown, the temperature change curve of the heater 103 over time includes a heating-up stage, a heat preservation stage, and a puffing stage.

[0061] In the heating-up stage, the temperature of the heater 103 rises from the initial temperature T0 (or the ambient temperature) to the maximum temperature T1. Generally, T1 can be 200°C - 400°C.

[0062] In the heat preservation stage, the temperature of the heater 103 is maintained at the preset target temperature T1 for a period of time, so that the aerosol generating article can be fully preheated to improve the user's puffing taste.

[0063] The duration of the temperature rise stage is from t0 to t1, and the duration of the heat preservation stage is from t1 to t2. The time from t0 to t2 is the preheating time of the heater 103. Generally, the preheating time of the heater 103 is 5 seconds to 30 seconds.

[0064] During the suction stage, the temperature of the heater 103 drops from the highest temperature to the target temperature T2. The target temperature T2 is the optimal temperature for generating aerosol in the aerosol generating article. During this stage, the temperature of the heater 103 generally remains at the target temperature T2 or fluctuates around the target temperature T2. The time from t2 to t3 is the holding time, which is approximately 180 seconds.

[0065] It should be noted that the heating curve of the heater 103 is not limited to Figure 3 this situation. In other examples, it is also feasible that the heating curve of the heater 103 only has a temperature rise stage and a suction stage.

[0066] It should also be noted that for Figure 2 the heater 201 in the example, there is a similar curve, but only locally different. For example: the heater 201 only has a temperature rise stage and a suction stage, and the parameters in the temperature rise stage and the suction stage are different from those of the heater 103. For example, the duration of the entire heating stage is approximately 2 seconds to 3 seconds.

[0067] In some embodiments, the circuit includes a memory for storing program instructions corresponding to the detection method in any one of the following method embodiments, so as to implement the detection method in any one of the following method embodiments. The following combines the exemplary applications and implementations of the aerosol generating device provided in the embodiments of the present application to illustrate the detection methods provided in some embodiments of the present application. Please refer to Figure 4 , Figure 4 is a schematic flowchart of the method for detecting the suction action of the aerosol generating device provided in the embodiment of the present application. It can be understood that the execution subject of this control method can be one or more controllers of the circuit.

[0068] In step S11, the real-time voltage value of the battery cell is obtained intermittently.

[0069] Specifically, the real-time voltage value of the battery cell can be detected by a voltage detection circuit. As Figure 5 shown, the two detection ends of the voltage detection circuit are respectively connected to J1 and J3 to detect the real-time voltage value across the battery cell.

[0070] In one example, when controlling the heater to enter the suction stage, and when the heater enters the suction stage, the real-time voltage value of the battery cell is obtained.

[0071] That is, control the power provided by the battery cell to the heater so that the temperature of the heater is maintained at a preset target temperature, such as the aforementioned target temperature T2; and during the process of maintaining the temperature of the heater at the preset target temperature, identify the user's puffing action based on the change in the real-time voltage value of the battery cell.

[0072] In step S12, identify the puffing action applied by the user to the aerosol generating article or the aerosol generating device based on the change in the real-time voltage value of the battery cell.

[0073] When controlling the heater to enter the puffing stage, in order to maintain the temperature of the heater at the preset target temperature, when the aerosol generating device is puffed, increase the power provided by the battery cell to the heater. At this time, the discharge current of the battery cell to the outside increases, and the voltage of the battery cell decreases; when the aerosol generating device is not puffed, decrease the power provided by the battery cell to the heater. At this time, the discharge current of the battery cell to the outside decreases, and the voltage of the battery cell slightly rebounds. Therefore, the puffing action can be determined based on the real-time voltage value of the battery cell.

[0074] In one example, identify the user's puffing action based on the derivative value of the real-time voltage value.

[0075] Wherein, the derivative value of the real-time voltage value can be a value obtained by performing processing such as averaging, summing, integrating, variance, multi-order lag, etc. on the acquired real-time voltage value.

[0076] In a specific example, the derivative value is the change amount of the average value calculated based on multiple real-time voltage values.

[0077] Specifically, first calculate the average value of multiple real-time voltage values obtained within a first preset duration, then gradually accumulate multiple consecutive average values to obtain multiple adjacent accumulated values within a second preset duration, and finally calculate the change amount of the accumulated values within the second preset duration to obtain the derivative value of the real-time voltage value. The first preset duration and the second preset duration are empirical values.

[0078] Taking Figure 6 and Figure 7 as an example, sample the real-time voltage value of the battery cell detected by the voltage detection circuit at a fixed frequency, such as sampling 1 data every 20 ms. After sampling 8 data, remove the maximum value and the minimum value, and calculate the average value corresponding to the real-time voltage value; in this way, an average value corresponding to the real-time voltage value is obtained every 160 ms (the first preset duration). Then record N average values in sequence, and sum or accumulate every 4 consecutive average values. In other words, the sum value V of the average value corresponding to the current real-time voltage value and the average values corresponding to the previous 3 historical real-time voltage values is calculated every 160 ms. sum, the multiple sum values corresponding to the average value can be referred to Figure 6 as shown.

[0079] Based on Figure 6 , further calculate the difference between two sum values at a fixed interval time, such as 640 ms (the second preset duration). Here, the following formula can be referred to: ΔV sum =V sum(Tn+4) -V sum(Tn) . The obtained difference corresponding to the sum value is the derivative value, which can be referred to Figure 7 as shown.

[0080] In an example, according to the comparison result between the derivative value of the real-time voltage value and the first preset threshold, determine whether the suction action occurs; and / or, according to the comparison result between the sum of the derivative values of multiple real-time voltage values and the second preset threshold, determine whether the suction action occurs.

[0081] Specifically, in the implementation, if the derivative value of the real-time voltage value is less than the first preset threshold, it is determined that the suction action is occurring; and / or, if the sum of the derivative values of multiple real-time voltage values is less than the second preset threshold, it is determined that the suction action is occurring.

[0082] Still taking Figure 6 and Figure 7 as an example, the derivative value of the real-time voltage value obtained after a series of processes is ΔV sum . Assume that the first preset threshold is threshold1 and the second preset threshold is threshold2. If any of the following conditions is met, it can be determined that the suction action is occurring:

[0083] 1) ΔV sum <threshold1, and ΔV sum is the derivative value at any moment;

[0084] 2) ΔV sum1 +ΔV sum2 +ΔV sum3 +ΔV sum4 <threshold2, where ΔV sum1 , ΔV sum2 , ΔV sum3 , ΔV sum4 can be 4 consecutive derivative values.

[0085] Taking threshold1 as -90 as an example, at points A, B, C, and D in the figure, the first condition is met, so it can be determined that suction behavior occurs at A, B, C, and D.

[0086] The first preset threshold threshold1 and the second preset threshold threshold2 are empirical values. Generally, the value range of the first preset threshold threshold1 is between -150 and -80, and the value range of the second preset threshold threshold2 is between -450 and -380.

[0087] In one example, when it is determined that the aerosol generating device is being puffed, the duration of the puff of the aerosol generating device is calculated.

[0088] Still taking Figure 6 and Figure 7 as an example, the derivative value of the real-time voltage value obtained after a series of processes is ΔV sum , and the duration of the puff of the aerosol generating device can be calculated according to the duration when ΔV sum is less than threshold1.

[0089] When the duration of the puff of the aerosol generating device reaches or exceeds the first preset duration threshold, the heater is controlled to stop heating.

[0090] If the sum of all puff durations reaches the first preset duration threshold, the heater is controlled to stop heating. "Reaching" means that the remaining puff duration is less than the puff duration of a single puff by the user. Even if the user puffs, the user experience will be reduced due to insufficient smoke volume. Therefore, the heater can be controlled to stop heating in advance.

[0091] In one example, the start of the puff is determined based on the degree of decrease in the derivative value of the real-time voltage value, and the end of the puff is determined based on the degree of increase in the derivative value of the real-time voltage value. Among them, the puff action is defined between the start of the puff and the end of the puff.

[0092] Still taking Figure 6 and Figure 7 as an example, the derivative value of the real-time voltage value obtained after a series of processes is ΔV sum , and the start of the puff can be determined according to the derivative value ΔV sum dropping to the first threshold. Then, the end of the puff can be determined according to the derivative value ΔV sum rising to the second threshold again. The first threshold and the second threshold can be the same, for example, threshold1 in the figure; the first threshold and the second threshold can also be different.

[0093] In one example, when it is determined that the aerosol generating device is being puffed, the power provided by the battery cell to the heater is adjusted.

[0094] It should be noted that the description and drawings of this application provide preferred embodiments of this application. However, this application can be implemented in many different forms and is not limited to the embodiments described in this specification. These embodiments do not serve as additional limitations to the content of this application. The purpose of providing these embodiments is to make the understanding of the disclosed content of this application more thorough and comprehensive. Moreover, the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all regarded as within the scope described in the specification of this application; further, for those of ordinary skill in the art, improvements or transformations can be made according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of this application.

Claims

1. An aerosol generating device, characterized in that, Comprising: A heater configured to heat an aerosol-generating article to generate an aerosol; A battery cell for supplying power to the heater; A controller configured to intermittently obtain a real-time voltage value of the battery cell and identify a puffing action applied by a user to the aerosol-generating article or the aerosol-generating device based on a change in the real-time voltage value of the battery cell.

2. The aerosol generating device according to claim 1, characterized in that, It further includes a voltage detection circuit for detecting the real-time voltage value across the battery cell.

3. The aerosol generating device according to claim 1, wherein The controller is configured to control the heater to enter a puffing stage and obtain the real-time voltage value of the battery cell when the heater enters the puffing stage.

4. The aerosol generating device according to claim 1, wherein The controller is configured to control the power supplied by the battery cell to the heater so that the temperature of the heater is maintained at a preset target temperature; and during the process of maintaining the temperature of the heater at the preset target temperature, identify the user's puffing action based on a change in the real-time voltage value of the battery cell.

5. The aerosol generating device according to claim 1, characterized in that, The controller is configured to identify the user's puffing action based on a derivative value of the real-time voltage value.

6. The aerosol generating device according to claim 5, wherein, The derivative value is a change amount of an average value calculated based on a plurality of the real-time voltage values.

7. The aerosol generating device according to claim 5, characterized in that, The controller is configured to determine whether the puffing action occurs according to a comparison result between the derivative value of the real-time voltage value and a first preset threshold; and / or determine whether the puffing action occurs according to a comparison result between the sum of the derivative values of a plurality of the real-time voltage values and a second preset threshold.

8. The aerosol generating device according to claim 7, wherein, The controller is configured to determine that the puffing action is occurring if the derivative value of the real-time voltage value is less than the first preset threshold; and / or determine that the puffing action is occurring if the sum of the derivative values of a plurality of the real-time voltage values is less than the second preset threshold.

9. The aerosol generating device according to claim 7, wherein, The controller is configured to calculate a puffing duration of the aerosol-generating device when it is determined that the aerosol-generating device has been puffed.

10. The aerosol generating device according to claim 9, wherein The controller is configured to control the heater to stop heating when the puffing duration of the aerosol-generating device reaches or exceeds a first preset duration threshold.

11. The aerosol generating device according to claim 5, wherein, The puffing action is defined between the start of puffing and the end of puffing. The controller is further configured to determine the start of puffing based on a degree of decrease in the derivative value of the real-time voltage value and determine the end of puffing based on a degree of increase in the derivative value of the real-time voltage value.

12. The aerosol generating device according to claim 5, wherein The controller is configured to adjust the power supplied by the battery cell to the heater when it is determined that the aerosol-generating device has been puffed.

13. The aerosol generating device according to claim 5, characterized in that, The controller is configured to first calculate an average value of a plurality of the real-time voltage values obtained within a first preset duration, then gradually accumulate a plurality of consecutive average values to obtain a plurality of adjacent accumulated values within a second preset duration, and finally calculate a change amount of the accumulated values within the second preset duration to obtain the derivative value of the real-time voltage value.

14. A method for detecting a puffing action of an aerosol generating device, characterized in that, The aerosol-generating device includes: A heater configured to heat an aerosol-generating article to generate an aerosol; A battery cell for supplying power to the heater; The method includes: Intermittently obtain the real-time voltage value of the battery cell, and identify the puffing action applied by the user to the aerosol generating article or the aerosol generating device based on the change in the real-time voltage value of the battery cell.

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