Aerosol generation apparatus and method for controlling aerosol generation therein

Abstract

The present invention relates to an aerosol generation apparatus and a method for controlling aerosol generation therein. The method comprises the following steps: determining an ambient temperature and a cavity temperature when an aerosol generation apparatus is not heated, and acquiring the temperature of a heating element from a thermocouple used for measuring the temperature of the heating element; when the temperature of the heating element when the aerosol generation apparatus is not heated and the ambient temperature when the aerosol generation apparatus is not heated meet a preset condition, calculating a deviation between the temperature of the heating element and the temperature of the cavity when the aerosol generation apparatus is not heated, so as to obtain a first deviation value; calculating a deviation between a theoretical temperature of the heating element and the temperature of the heating element measured by the thermocouple when the aerosol generation apparatus is heated to a stable state by using a preset power, so as to obtain a second deviation value; and on the basis of the first deviation value and the second deviation value, correcting the temperature of the heating element measured by the thermocouple. The present invention can effectively improve the accuracy of temperature measurement of an aerosol generation apparatus, and is beneficial to the accurate temperature control during an aerosol generating process, thereby reducing the influence on taste, and improving the user experience.

Description

An aerosol generating device and a method of controlling aerosol generation thereof TECHNICAL FIELD

[0001] The present application relates to the field of aerosol technology, and in particular to an aerosol generating device and a method of controlling aerosol generation thereof. BACKGROUND

[0002] When the aerosol generating device is heated, the temperature in the device is usually controlled to be below a certain threshold. However, the temperature measurement is not accurate enough to achieve this control. The more reliable temperature measurement method on the market is thermocouple temperature measurement. However, due to the tolerances in the structure and electronic components during production, or the deviation in the installation position, the temperature of each device may differ when it reaches thermal equilibrium during heating, resulting in less accurate temperature measurement. SUMMARY

[0003] The present application aims to solve the above-mentioned problems and provides an aerosol generating device and a method of controlling aerosol generation thereof.

[0004] The technical solution adopted by the present application to solve the technical problem is a method for controlling aerosol generation in an aerosol generating device, comprising the following steps:

[0005] determining the ambient temperature and the cavity temperature when not heated, and obtaining the heating element temperature from a thermocouple for detecting the heating element temperature;

[0006] when the heating element temperature when not heated and the ambient temperature when not heated meet a preset condition, calculating the deviation between the heating element temperature when not heated and the cavity temperature to obtain a first deviation value;

[0007] calculating the deviation between the heating element temperature measured by the thermocouple when heated to a stable state and the theoretical temperature of the heating element to obtain a second deviation value;

[0008] correcting the heating element temperature measured by the thermocouple according to the first deviation value and the second deviation value.

[0009] In some embodiments, the step of correcting the heating element temperature measured by the thermocouple according to the first deviation value and the second deviation value comprises:

[0010] using the deviation value as the abscissa, the heating element temperature measured by the thermocouple as the ordinate, the first deviation value and the corresponding heating element temperature measured by the thermocouple when not heated as the first coordinate point, and the second deviation value and the corresponding heating element temperature measured by the thermocouple when heated to a stable state as the second coordinate point, and determining a correction factor according to the first coordinate point and the second coordinate point.

[0011] correcting the heater temperature measured by the thermocouple according to the correction factor.

[0012] In some embodiments, the step of determining the ambient temperature and the cavity temperature when the heater is not heated comprises:

[0013] obtaining a controller temperature when the heater is not heated from a first temperature measuring component disposed on a controller, and obtaining a charging terminal temperature when the heater is not heated and in a non-charging state from a second temperature measuring component disposed on a charging chip, wherein the aerosol-generating device comprises the controller and the charging chip;

[0014] determining the ambient temperature when the heater is not heated according to the controller temperature and the charging terminal temperature.

[0015] In some embodiments, the step of determining the ambient temperature when the heater is not heated according to the controller temperature and the charging terminal temperature comprises:

[0016] fusing the controller temperature and the charging terminal temperature to obtain the ambient temperature when the heater is not heated.

[0017] In some embodiments, the step of determining the ambient temperature and the cavity temperature when the heater is not heated comprises:

[0018] obtaining a PCB temperature from a third temperature measuring component disposed on a PCB, and obtaining a battery temperature from a fourth temperature measuring component disposed on a battery, wherein the aerosol-generating device comprises the PCB and the battery;

[0019] determining the cavity temperature when the heater is not heated according to the PCB temperature and the battery temperature.

[0020] In some embodiments, the step of determining the cavity temperature when the heater is not heated according to the PCB temperature and the battery temperature comprises:

[0021] fusing the PCB temperature and the battery temperature to obtain the cavity temperature when the heater is not heated.

[0022] In some embodiments, the preset condition is that the heater temperature measured by the thermocouple when the heater is not heated is less than or equal to the sum of the ambient temperature when the heater is not heated and a preset empirical temperature value.

[0023] In some embodiments, the preset empirical temperature value is 3°C.

[0024] In some embodiments, the step of calculating a second deviation value using the deviation between the heater temperature measured by the thermocouple when the heater is heated at a preset power to stabilize and the theoretical temperature of the heater comprises:

[0025] inputting a preset power to the aerosol-generating device and maintaining the preset power for a first preset time period, and recording the temperature of the heating element measured by the thermocouple every second preset time period;

[0026] filtering the recorded temperature of the heating element to obtain a stable temperature of the heating element;

[0027] calculating a deviation between the stable temperature of the heating element and a theoretical temperature of the heating element determined according to a heat balance equation at the preset power to obtain a second deviation value.

[0028] In some embodiments, the preset power is 2.5 W, 3 W, 3.5 W or 4 W; and / or

[0029] the first preset time period is 60 s; and / or

[0030] the second preset time period is 100 ms.

[0031] In addition, the present application also provides an aerosol-generating device, comprising:

[0032] a heating element for heating an aerosol-forming substrate;

[0033] a battery for providing an electric power supply to the heating element;

[0034] a controller configured to:

[0035] determine an ambient temperature and a cavity temperature when the heating element is not heated, and obtain a temperature of the heating element from a thermocouple for detecting the temperature of the heating element;

[0036] when the temperature of the heating element when not heated and the ambient temperature when not heated satisfy a preset condition, calculate a deviation between the temperature of the heating element when not heated and the cavity temperature to obtain a first deviation value;

[0037] calculate a deviation between the temperature of the heating element measured by the thermocouple when heated to stable by the preset power and a theoretical temperature of the heating element to obtain a second deviation value;

[0038] correct the temperature of the heating element measured by the thermocouple according to the first deviation value and the second deviation value.

[0039] The aerosol-generating device and the method for controlling aerosol generation of the present application have the following beneficial effects: the present application can obtain a more accurate temperature of the heating element by correcting the temperature of the heating element measured by the thermocouple, effectively improves the accuracy of temperature measurement of the aerosol-generating device, can be beneficial to accurate temperature control of the aerosol-generating process, reduces the influence on taste, and improves user experience. BRIEF DESCRIPTION OF DRAWINGS

[0040] The application will be further described below in conjunction with the accompanying drawings and embodiments. In the drawings:

[0041] FIG. 1 is a flowchart of a method for controlling aerosol generation in an aerosol generating device according to an embodiment of the present disclosure;

[0042] FIG. 2 is a flowchart of a method for controlling aerosol generation in an aerosol generating device according to some embodiments of the present disclosure;

[0043] FIG. 3 is a flowchart of a method for controlling aerosol generation in an aerosol generating device according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0044] In order to make the technical features, objectives and effects of the present application clearer, the specific embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0045] In the following description, specific details are set forth in order to provide a thorough understanding of the embodiments of the application. However, persons of ordinary skill in the art will readily appreciate that the application can be practiced without these specific details. In other instances, well-known structures, devices, circuits, and processes have not been described in detail so as not to unnecessarily obscure the description of the application.

[0046] In order to facilitate the understanding of the present application, the present application will be described more fully below, and the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the present application disclosure more thorough and comprehensive.

[0047] It should be understood that although the terms first, second, third, etc. can be used in the embodiments of the present application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. There is no need or implication of any such actual relationship or order between these entities or operations.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0049] Referring to FIG. 1, in one embodiment disclosed by the present application, the method for controlling aerosol generation in an aerosol generating device according to the present embodiment includes the following steps:

[0050] S1, determine the ambient temperature and the cavity temperature when not heated, and obtain the heating element temperature from the thermocouple for detecting the heating element temperature.

[0051] Optionally, referring to FIG. 2, in the step of determining the ambient temperature and the cavity temperature when not heated, the following steps are included:

[0052] S101, obtain the controller temperature when not heated from the first temperature measuring component arranged on the controller, and obtain the charging end temperature when not heated and in the non-charging state from the second temperature measuring component arranged on the charging chip, wherein the aerosol generating device includes the controller and the charging chip.

[0053] S102, determine the ambient temperature when not heated according to the controller temperature and the charging end temperature.

[0054] S103, obtain the PCB temperature from the third temperature measuring component arranged on the PCB, and obtain the battery temperature from the fourth temperature measuring component arranged on the battery, wherein the aerosol generating device includes the PCB and the battery.

[0055] S104, determine the cavity temperature when not heated according to the PCB temperature and the battery temperature.

[0056] Specifically, the ambient temperature when not heated can be obtained by fusing the controller temperature and the charging end temperature. The cavity temperature when not heated can be obtained by fusing the PCB temperature and the battery temperature.

[0057] Exemplarily, the fusion processing can be performed by weight ratio allocation, such as setting the weight ratio of the controller temperature to 80% and the weight ratio of the charging end temperature to 20%. The ambient temperature when not heated can be calculated by such weight ratio. Similarly, the cavity temperature when not heated can be calculated by allocating the weight ratio of the PCB temperature and the battery temperature.

[0058] It should be noted that the specific allocation ratio of the weight ratio is not limited in the embodiment, and can be determined according to specific needs.

[0059] The embodiment fuses the controller temperature and the charging end temperature to obtain the ambient temperature, and fuses the PCB temperature and the battery temperature to obtain the cavity temperature. Based on this, the heating element temperature measured by the thermocouple is corrected to obtain a more accurate heating element temperature, improve the accuracy of the thermocouple temperature measurement, and be beneficial to the accurate temperature control of the aerosol generating process, reduce the taste influence, and improve the user experience.

[0060] S2, when the heating element temperature when not heated and the ambient temperature when not heated meet the preset condition, calculate the deviation of the heating element temperature when not heated and the cavity temperature to obtain a first deviation value.

[0061] Specifically, the preset condition is that the temperature of the heat-generating body measured by the thermocouple when not heated is less than or equal to the sum of the ambient temperature when not heated and a preset empirical temperature value.

[0062] That is, if the temperature measured by the thermocouple is not higher than the sum of the ambient temperature when not heated and the preset empirical temperature value, the current data is considered valid. Exemplarily, the preset empirical temperature value can be selected as 3℃.

[0063] S3, calculating the deviation between the temperature of the heat-generating body measured by the thermocouple when heated to stable with the preset power and the theoretical temperature of the heat-generating body, to obtain a second deviation value.

[0064] Specifically, referring to FIG. 3, this step includes:

[0065] S301, inputting the preset power to the aerosol-generating device and lasting for a first preset time length, and recording the temperature of the heat-generating body measured by the thermocouple every second preset time length.

[0066] S302, performing filtering processing on the recorded temperature of the heat-generating body, to obtain the temperature of the heat-generating body when stable.

[0067] S303, calculating the deviation between the temperature of the heat-generating body when stable and the theoretical temperature of the heat-generating body determined according to the heat balance equation under the preset power, to obtain a second deviation value.

[0068] It can be understood that when stable, the difference between the heat-generating body temperatures measured by the thermocouple for two adjacent times in succession is less than a preset value. For example, the heat-generating body temperatures measured by the thermocouple for the 9th to 12th times are 170℃, 175℃, 175.5℃, 175.6℃, 175.6℃, 175.6℃, respectively, and the deviation values between the measurements for three times in succession are all less than 1℃, so it is considered that the heating is stable at the 12th measurement.

[0069] It should be noted that during the heating process of the heat-generating body, the electric energy input from the power supply (power supply assembly) is partly converted into the internal energy of the heat-generating body for increasing the temperature of the heat-generating body, and the other part is lost due to radiation and convection. Therefore, the instantaneous electric power of the heat-generating body when heated at a certain temperature rise rate is:

[0070] = + (1)

[0071] When the heat-generating body reaches the heat balance state under continuous heating, within time, the instantaneous heat balance equation is:

[0072] = + (2)

[0073] Taking Laplace transform of equation (2), we have:

[0074] = (3)

[0075] wherein, is the working power of the voltage, is the thermal conductivity (equal to the heat dissipated from the heat-generating body per unit area per unit time when the temperature is 1℃), is the surface area of the heat-generating body, is the temperature rise of the heat-generating body, is the specific heat capacity of the heat-generating body, is the mass of the heat-generating body.

[0076] Through this heat balance equation, the theoretical temperature of the heat-generating body under the preset power can be determined.

[0077] In this embodiment, the preset power can be 2.5W, 3W, 3.5W or 4W, etc. The first preset time length can be selected as 60S. The second preset time length can be selected as 100ms.

[0078] It can be understood that, with the heating, the temperature of the heat-generating body measured by the thermocouple will gradually stabilize or change very slowly, i.e. reaches a state of thermal equilibrium (stability). Using 2.5W, 3W, 3.5W or other preset power output (duration 60S), record and save the temperature value of the thermocouple once every certain period of time, such as 100ms. Then, using sliding average filtering, Kalman filtering or other filtering algorithms to preprocess the temperature value of the thermocouple, so as to obtain the relatively stable data of the temperature value of the thermocouple, and calculate and save the temperature value of the thermocouple at the stable time. At this time, the deviation between the theoretical temperature and the deviation (i.e. the second deviation value) of the high temperature stage.

[0079] S4, correcting the temperature of the heat-generating body measured by the thermocouple according to the first deviation value and the second deviation value.

[0080] In some embodiments, in the step of correcting the temperature of the heat-generating body measured by the thermocouple according to the first deviation value and the second deviation value, it comprises:

[0081] The first deviation value and the heater temperature measured by the thermocouple when the heater is not heated are taken as the first coordinate point, and the second deviation value and the heater temperature measured by the thermocouple when the heater is heated and stabilized are taken as the second coordinate point, and a correction factor is determined according to the first coordinate point and the second coordinate point.

[0082] The heater temperature measured by the thermocouple is corrected according to the correction factor.

[0083] It can be understood that the working principle of the method is to determine the temperature deviation measured by the thermocouple at low temperature (when not heated) and the temperature deviation measured by the thermocouple at high temperature (when heated), determine the deviation rule (i.e. correction factor) through the deviation of high temperature and low temperature, and then correct the heater temperature measured by the thermocouple according to the deviation rule, so as to obtain the corrected thermocouple temperature. The deviation rule is obtained by determining a straight line according to two coordinate points.

[0084] In the embodiment, the heater temperature measured by the thermocouple is corrected to obtain a more accurate heater temperature, which effectively improves the accuracy of temperature measurement of the aerosol generating device, is beneficial to accurate temperature control in the aerosol generating process, reduces the influence on taste, and improves user experience.

[0085] In another embodiment disclosed in the present application, the aerosol generating device of the embodiment comprises:

[0086] A heater for heating an aerosol-forming substrate.

[0087] A battery for providing power supply to the heater.

[0088] A controller, and the controller is configured to:

[0089] Determine the ambient temperature and the cavity temperature when not heated, and obtain the heater temperature from the thermocouple for detecting the heater temperature.

[0090] Specifically, the controller temperature when not heated is obtained from the first temperature measuring component arranged on the controller, and the charging end temperature when not heated and in a non-charging state is obtained from the second temperature measuring component arranged on the charging chip, wherein the aerosol generating device comprises the controller and the charging chip. The ambient temperature when not heated is determined according to the controller temperature and the charging end temperature. The PCB board temperature is obtained from the third temperature measuring component arranged on the PCB board, and the battery temperature is obtained from the fourth temperature measuring component arranged on the battery, wherein the aerosol generating device comprises the PCB board and the battery. The cavity temperature when not heated is determined according to the PCB board temperature and the battery temperature.

[0091] Alternatively, the ambient temperature when not heated can be obtained by fusing the controller temperature and the charging terminal temperature. The cavity temperature when not heated can be obtained by fusing the PCB temperature and the battery temperature.

[0092] For example, the fusing can be performed by weight ratio allocation, for example, the weight ratio of the controller temperature is set to 80%, and the weight ratio of the charging terminal temperature is set to 20%. In this way, the ambient temperature when not heated can be calculated. Similarly, the cavity temperature when not heated can be calculated by allocating the weight ratio of the PCB temperature and the battery temperature.

[0093] The temperature measuring assembly in the embodiment can be a thermistor or the like.

[0094] When the heater temperature when not heated and the ambient temperature when not heated satisfy a preset condition, a deviation between the heater temperature when not heated and the cavity temperature is calculated to obtain a first deviation value.

[0095] Specifically, the preset condition is that the heater temperature when not heated measured by the thermocouple is less than or equal to the sum of the ambient temperature when not heated and a preset empirical temperature value.

[0096] That is, if the temperature measured by the thermocouple is not higher than the sum of the ambient temperature when not heated and the preset empirical temperature value, the current data is considered valid. For example, the preset empirical temperature value can be 3°C.

[0097] A deviation between the heater temperature measured by the thermocouple when heated to stable at the preset power and the theoretical temperature of the heater is calculated to obtain a second deviation value.

[0098] In some embodiments, the preset power is input to the aerosol generating device for a first preset time period, and the heater temperature measured by the thermocouple during the first preset time period is recorded every second preset time period. The recorded heater temperature is filtered to obtain the heater temperature when stable. A deviation between the heater temperature when stable and the theoretical temperature of the heater determined according to the heat balance equation at the preset power is calculated to obtain the second deviation value.

[0099] The correction factor of the thermocouple is determined according to the first deviation value and the second deviation value to correct the heater temperature measured by the thermocouple.

[0100] In some embodiments, the deviation value is taken as the abscissa, the heater temperature measured by the thermocouple is taken as the ordinate, the first deviation value and the corresponding heater temperature measured by the thermocouple when not heated are taken as the first coordinate point, and the second deviation value and the corresponding heater temperature measured by the thermocouple when heated to stable are taken as the second coordinate point. The correction factor is determined according to the first coordinate point and the second coordinate point. The heater temperature measured by the thermocouple is corrected according to the correction factor.

[0101] It can be understood that the working principle of the embodiment is that the temperature deviation measured by the thermocouple at low temperature (without heating) and the temperature deviation measured by the thermocouple at high temperature (with heating) are determined, the deviation rule (i.e., the correction factor) is determined through the deviation of the high temperature and the low temperature, and the deviation rule is used to correct the heating body temperature measured by the thermocouple, so that the corrected thermocouple temperature can be obtained. The deviation rule is obtained according to the way of determining a straight line according to two coordinate points.

[0102] In the embodiment, the controller of the aerosol generating device can obtain more accurate heating body temperature by correcting the heating body temperature measured by the thermocouple, effectively improving the accuracy of temperature measurement of the aerosol generating device, and being conducive to accurate temperature control in the aerosol generating process, reducing the influence on taste, and improving user experience.

[0103] Those skilled in the art will further appreciate that the units and algorithms described in connection with the examples disclosed herein can be implemented in electronic hardware, computer software, or both. As described above, the order of execution of the examples can depend on the implementation. The above described examples are illustrative of the operation of the present application and are not meant to limit the same thereto. The flow diagrams of the methods only illustrate the operation of some embodiments, and their sequence does not necessarily represent the order in which the methods are performed. The methods can be performed in any order that is practical.

[0104] The steps of a method or algorithm described in connection with the examples disclosed herein can be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module can reside in random access memory (RAM), flash memory, read-only memory (ROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0105] It can be understood that the above embodiments only express the preferred embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the patent of the present application; it should be pointed out that for ordinary skilled in the art, the above technical features can be freely combined without departing from the concept of the present application, and some deformations and improvements can be made, which all belong to the protection scope of the present application; therefore, any equivalent transformation and modification within the scope of the claims of the present application shall belong to the scope of the claims of the present application.

Claims

1. A method for controlling aerosol generation in an aerosol generating device, characterized in that, Includes the following steps: Determine the ambient temperature and cavity temperature when not heated, and obtain the heating element temperature from the thermocouple used to detect the heating element temperature; When the temperature of the heating element when it is not heated and the ambient temperature when it is not heated meet the preset conditions, the deviation between the temperature of the heating element when it is not heated and the temperature of the cavity is calculated to obtain the first deviation value; The deviation between the temperature of the heating element measured by the thermocouple when heating to a stable state using a preset power and the theoretical temperature of the heating element is calculated to obtain a second deviation value; The temperature of the heating element measured by the thermocouple is corrected based on the first deviation value and the second deviation value.

2. The method for controlling aerosol generation in an aerosol generating device according to claim 1, characterized in that, The step of correcting the heating element temperature measured by the thermocouple based on the first deviation value and the second deviation value includes: The deviation value is plotted on the horizontal axis, the temperature of the heating element measured by the thermocouple is plotted on the vertical axis, the first deviation value and the corresponding temperature of the heating element when it is not heated are plotted on the vertical axis, the second deviation value and the corresponding temperature of the heating element when the heating is stable are plotted on the vertical axis, and the correction factor is determined based on the first and second coordinate points. The temperature of the heating element measured by the thermocouple is corrected according to the correction factor.

3. The method for controlling aerosol generation in an aerosol generating device according to claim 1, characterized in that, The step of determining the ambient temperature and cavity temperature when not heated includes: The controller temperature when not heated is obtained from a first temperature measuring component on the controller, and the charging end temperature when not heated and in a non-charging state is obtained from a second temperature measuring component on the charging chip, wherein the aerosol generating device includes a controller and a charging chip. The ambient temperature when not heated is determined based on the controller temperature and the charging terminal temperature.

4. The method for controlling aerosol generation in an aerosol generating device according to claim 3, characterized in that, The step of determining the ambient temperature when not heated based on the controller temperature and the charging terminal temperature includes: The controller temperature and the charging terminal temperature are fused to obtain the ambient temperature when not heated.

5. The method for controlling aerosol generation in an aerosol generating device according to claim 1, characterized in that, The step of determining the ambient temperature and cavity temperature when not heated includes: The temperature of the PCB board is obtained from a third temperature measuring component disposed on the PCB board, and the temperature of the battery is obtained from a fourth temperature measuring component disposed on the battery, wherein the aerosol generating device includes the PCB board and the battery. The cavity temperature when not heated is determined based on the PCB board temperature and the battery temperature.

6. The method for controlling aerosol generation in an aerosol generating device according to claim 5, characterized in that, The step of determining the unheated cavity temperature based on the PCB board temperature and the battery temperature includes: The PCB board temperature and the battery temperature are fused to obtain the cavity temperature when it is not heated.

7. The method for controlling aerosol generation in an aerosol generating device according to claim 1, characterized in that, The preset condition is that the temperature of the heating element when it is not heated, as measured by the thermocouple, is less than or equal to the sum of the ambient temperature when it is not heated and the preset empirical temperature value.

8. The method for controlling aerosol generation in an aerosol generating apparatus according to claim 7, characterized in that, The preset empirical temperature value is 3℃.

9. The method for controlling aerosol generation in an aerosol generating device according to claim 1, characterized in that, The step of calculating the deviation between the temperature of the heating element measured by the thermocouple when the heating power reaches a stable state and the theoretical temperature of the heating element, to obtain the second deviation value, includes: A preset power is input to the aerosol generating device for a first preset duration, and the temperature of the heating element measured by the thermocouple is recorded at every second preset duration. The recorded heating element temperature is filtered to obtain the heating element temperature when it is stable. The deviation between the stable temperature of the heating element and the theoretical temperature of the heating element determined by the heat balance equation under the preset power is calculated to obtain a second deviation value.

10. The method for controlling aerosol generation in an aerosol generating apparatus according to claim 9, characterized in that, The preset power is 2.5W, 3W, 3.5W, or 4W; and / or The first preset duration is 60 seconds; and / or The second preset duration is 100ms.

11. An aerosol generating device, characterized in that, include: A heating element used to heat the aerosol forming matrix; A battery for providing power to the heating element; The controller is configured to: Determine the ambient temperature and cavity temperature when not heated, and obtain the heating element temperature from the thermocouple used to detect the heating element temperature; When the temperature of the heating element when it is not heated and the ambient temperature when it is not heated meet the preset conditions, the deviation between the temperature of the heating element when it is not heated and the temperature of the cavity is calculated to obtain the first deviation value; The deviation between the temperature of the heating element measured by the thermocouple when heating to a stable state using a preset power and the theoretical temperature of the heating element is calculated to obtain a second deviation value; The temperature of the heating element measured by the thermocouple is corrected based on the first deviation value and the second deviation value.

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