Control method for aerosol-generating apparatus

Abstract

Disclosed in the present application are a control method and an aerosol-generating apparatus. The aerosol-generating apparatus comprises a heater and a battery cell, wherein the heater is used for heating an aerosol-forming product to generate an aerosol, and the battery cell is used for providing power to the heater. The control method comprises: acquiring a body temperature of an aerosol-generating apparatus; and on the basis of the body temperature, adjusting a target temperature and / or a preheating time of a heater in a preheating stage, so as to control, on the basis of the adjusted target temperature and / or the adjusted preheating time, a battery cell to provide power to the heater, thereby completing preheating. In the method, a preheating temperature and / or a preheating time in a preheating stage are / is increased on the basis of a body temperature, such that a heater can provide more heat to compensate for low body temperature. Therefore, an aerosol-forming substrate can be sufficiently preheated, thereby improving the sensation of vaping.

Description

Control method of aerosol generating device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application No. 202410897583.6, filed on July 04, 2024, and entitled "Control method of aerosol generating device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] Embodiments of the present application relate to the field of aerosol generating technology, and in particular to a control method and an aerosol generating device. BACKGROUND

[0004] An aerosol generating device heats an aerosol-forming substrate to generate an aerosol for a user to smoke. Generally, the heating process of the aerosol generating device on the aerosol-forming substrate includes a preheating stage, which is a period of time from the start of heating after the aerosol generating device is started. In the preheating stage, the temperature of the aerosol-forming substrate needs to be quickly increased to reach a temperature at which a satisfactory amount of aerosol is generated to meet the smoking demand in the puffing stage.

[0005] However, in the case that the aerosol generating device is in a low-temperature environment, the aerosol-forming substrate may not be fully preheated, and the amount of smoke in the first few puffs may be insufficient, resulting in poor taste and affecting the user experience.

[0006] SUMMARY

[0007] The technical problem solved by the embodiments of the present application is how the aerosol generating device fully preheats the aerosol-forming substrate to generate sufficient aerosol and improve the taste of smoking.

[0008] To solve the above technical problem, the embodiments of the present application adopt the following technical solutions:

[0009] In a first aspect, the embodiments of the present application provide a control method of an aerosol generating device, the aerosol generating device comprising a heater and a battery, the heater being configured to heat an aerosol-forming article to generate an aerosol, and the battery being configured to provide power to the heater.

[0010] The control method comprises:

[0011] obtaining a temperature of a body of the aerosol generating device;

[0012] adjusting a target temperature and / or a preheating time of the heater in the preheating stage according to the temperature of the body, and controlling the battery to provide power to the heater based on the adjusted target temperature and / or preheating time to complete the preheating.

[0013] In some embodiments, the target temperature of the heater in the preheating stage is adjusted according to the fuselage temperature, including:

[0014] determining a temperature increment according to the fuselage temperature.

[0015] taking the sum of the target temperature and the temperature increment as an adjusted target temperature.

[0016] In some embodiments, the temperature increment is negatively correlated with the fuselage temperature.

[0017] In some embodiments, the temperature increment is determined according to the fuselage temperature, including:

[0018] if the fuselage temperature is less than or equal to a second threshold value, determining the temperature increment as a first temperature increment;

[0019] if the fuselage temperature is greater than or equal to a third threshold value, determining the temperature increment as a second temperature increment;

[0020] if the fuselage temperature is greater than the second threshold value and less than the third threshold value, determining the temperature increment as a third temperature increment; the third temperature increment is greater than the second temperature increment and less than the first temperature increment.

[0021] In some embodiments, the temperature increment is determined as the third temperature increment, specifically including:

[0022] calculating a first difference between the third threshold value and the fuselage temperature, a second difference between the second threshold value and the third threshold value, and a third difference between the first temperature increment and the second temperature increment;

[0023] taking the ratio of the first difference and the second difference as a weighting coefficient of the third difference, and weighting and summing the second temperature increment to obtain the third temperature increment.

[0024] In some embodiments, the preheating time of the heater in the preheating stage is adjusted, including:

[0025] determining a time increment according to the fuselage temperature;

[0026] taking the sum of the preheating time and the time increment as an adjusted preheating time.

[0027] In some embodiments, the time increment is negatively correlated with the fuselage temperature.

[0028] In some embodiments, the time increment is determined according to the fuselage temperature, including:

[0029] if the fuselage temperature is less than or equal to a second threshold value, determining the time increment as a first time increment;

[0030] if the fuselage temperature is greater than or equal to a third threshold value, determining the time increment as a second time increment;

[0031] If the body temperature is greater than the second threshold value and less than a third threshold value, the time increment is determined as a third time increment; the third time increment is greater than the second time increment and less than the first time increment.

[0032] In some embodiments, the determining the time increment as the third time increment comprises:

[0033] calculating a first difference between the third threshold value and the body temperature, a second difference between the second threshold value and the third threshold value, and a fourth difference between the first time increment and the second time increment;

[0034] weighting the second time increment by a ratio of the first difference to the second difference as a weighting coefficient of the fourth difference, and summing to obtain the third time increment.

[0035] In a second aspect, some embodiments of the present application provide an aerosol generating device, comprising:

[0036] a heater configured to heat an aerosol forming article to generate an aerosol;

[0037] one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs comprise a program for executing the control method of the first aspect.

[0038] Advantages of embodiments of the present application: Unlike the prior art, the control method provided by the embodiments of the present application is applied to an aerosol generating device, which comprises a heater and an electric core. The heater is configured to heat an aerosol forming article to generate an aerosol, and the electric core is configured to provide power to the heater. The control method comprises: obtaining a body temperature of the aerosol generating device; adjusting a target temperature and / or a preheating time of the heater in a preheating phase according to the body temperature, so as to control the electric core to provide power to the heater based on the adjusted target temperature and / or preheating time to complete preheating. In this embodiment, the preheating temperature and / or the preheating time of the preheating phase are increased based on the body temperature, so that the heater can provide more heat in the preheating phase to compensate for the low body temperature, reduce the occurrence of the situation that the aerosol forming substrate is not preheated sufficiently due to insufficient heat absorption caused by the low body temperature, so that the aerosol forming substrate can be preheated sufficiently to generate sufficient aerosol, thereby improving the smoking taste. In addition, this method has strong adaptability and good adaptability to different types of aerosol generating devices and different degrees of low temperature environment. BRIEF DESCRIPTION OF DRAWINGS

[0039] One or more embodiments are illustrated by way of example in the figures that are part of this document and which illustrate key / representative principles of the application. Such embodiments do not constitute an exhaustive list of embodiments that can be made as modifications can be made without departing from the scope of the application, which is defined by the claims. The use of the same reference symbols in different drawings indicates similar or identical items.

[0040] Figure 1 is a schematic diagram of an aerosol forming article being inserted into an aerosol generating device according to some embodiments of the present application;

[0041] Figure 2 is a schematic diagram of an aerosol generating device according to some embodiments of the present application;

[0042] Figure 3 is a schematic diagram of an aerosol forming article according to some embodiments of the present application;

[0043] Figure 4 is a schematic diagram of an aerosol generating device and an aerosol forming article according to some embodiments of the present application;

[0044] Figure 5 is a schematic diagram of the working principle of an induction heater assembly according to some embodiments of the present application;

[0045] Figure 6 is a schematic diagram of a control method applied to an aerosol generating device according to some embodiments of the present application;

[0046] Figure 7 is a comparison diagram of preset temperature curves of an aerosol generating device in a normal state and an aerosol generating device in an extreme cold machine state according to some embodiments of the present application. DETAILED DESCRIPTION

[0047] The present application will be described in detail below with specific embodiments. The following embodiments will help those skilled in the art to further understand the present application, but do not limit the present application in any form. It should be noted that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made. These are within the scope of protection of the present application.

[0048] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0049] It should be noted that if there is no conflict, each feature in the embodiments of the present application can be combined with each other, and all within the scope of protection of the present application. In addition, although the functional modules are divided in the device schematic diagram, and the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than the modules in the device or the order in the flowchart. In addition, the "first", "second", "third" and the like used herein do not limit the data and execution order, but only distinguish the same items or similar items with basically the same function and effect.

[0050] Unless otherwise defined, all technical and scientific terms used in the present disclosure have the same meanings 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. All publications, patent applications, patents, and other references mentioned in this specification are incorporated by reference. In case of a conflict in terminology, the present specification controls. In this specification, the use of "and / or" means

[0051] Furthermore, the various features of the embodiments of the present application described below can be combined with each other as long as no conflict arises.

[0052] Fig. 1 and Fig. 2 are an aerosol generating device 10 according to some embodiments of the present application, comprising a chamber 11, a heater 12, an electric cell 14 and a controller 15. The controller 15 is electrically connected to the electric cell 14 and the heater 12.

[0053] The chamber 11 is configured to receive an aerosol generating article 20. The aerosol generating article 20 can be inserted into or extracted from the chamber 11 through an opening A on the aerosol generating device 10.

[0054] As shown in Fig. 3, in some embodiments, the aerosol generating article 20 comprises a filter segment 21 and a substrate material segment 22. The substrate material segment 22 comprises an aerosol forming substrate. The aerosol forming substrate is a substrate capable of releasing volatile compounds that form an aerosol. The volatile compounds can be released by heating the aerosol forming substrate. The aerosol forming substrate can be a solid aerosol forming substrate. Alternatively, the aerosol forming substrate can comprise both solid and liquid components.

[0055] In some embodiments, the aerosol forming substrate can comprise a tobacco containing material, which includes volatile tobacco flavour compounds that are released from the substrate upon heating. Alternatively, the aerosol forming substrate can comprise a non-tobacco material. The aerosol forming substrate can further comprise an aerosol former. Examples of suitable aerosol formers are glycerol and propylene glycol.

[0056] The aerosol generated by heating the substrate material segment 22 is delivered to the user through the filter segment 21, which can be a cellulose acetate filter. The filter segment 21 can be sprayed with a flavouring liquid to provide a flavour, or a separate fibre coated with a flavouring liquid can be inserted into the filter segment, which in turn improves the persistence of the flavour delivered to the user. The filter segment 21 can also have a capsule of spherical or cylindrical shape, which can contain a content of flavouring substance.

[0057] In FIG. 3, only the components of the aerosol forming article 20 relevant to the present embodiment are shown. Accordingly, those skilled in the art in relation to the present embodiment will understand that the aerosol forming article 20 can further comprise general components in addition to those shown in FIG. 3. For example, a cooling segment for cooling the aerosol generated by the heating of the segment of substrate material 22 so that the user can inhale the aerosol cooled to an appropriate temperature.

[0058] a heater 12 for heating the aerosol forming substrate in the aerosol forming article 20 to generate the inhalable aerosol.

[0059] In some embodiments, the heater 12 comprises a tubular base 121 extending axially along the chamber 11 and surrounding the chamber 11, and a heating element 122 disposed on the outer surface of the base 121. It will be appreciated that in other embodiments, the heating element 122 can also be located on the inner surface or intermediate layer of the base 121. This is merely exemplary and does not impose any limitation on the heating element 122.

[0060] In some embodiments, the heating element 122 is an electrically resistive heating circuit, such as an electrically conductive track, a MESH heating net, a heating wire, etc., disposed on the base 121, which is coupled to the battery 14 through the lead 13 or an electrically conductive medium, and generates heat after receiving the power provided by the battery 14, and transmits the heating energy generated by the heat to the aerosol forming article 20 through the base 121. In some embodiments, the heating element 122 is a heating sheet or a heating needle disposed in the chamber 11, which can be inserted into the aerosol forming article 20 for heating, i.e., the so-called center heating or internal heating.

[0061] In some embodiments, the heating element 122 can also be an infrared electric heating coating formed on the base 121, which is coupled to the battery 14 through the lead 13 or an electrically conductive medium, and generates heat to produce infrared rays after receiving the power provided by the battery 14, which can be transmitted through the infrared-transmissive base 121 or directly radiate to heat the aerosol forming article 20.

[0062] In some embodiments, the heating element 122 can also be an electromagnetic induction, air heating, or the like. The heating element 122 includes a susceptor, and the aerosol generating device 10 further includes a corresponding induction coil. When a varying current flows through the induction coil, the induction coil generates a varying magnetic field. When the varying magnetic field penetrates the susceptor, the susceptor generates heat, thereby heating the aerosol generating substrate to generate an aerosol. For example, as shown in (a) of FIG. 4, the induction coil is disposed on an outer surface of the base 121, and the susceptor is in the form of a sheet, a needle, or a pin, which is disposed in the chamber 11. When the aerosol generating article 20 is inserted into the chamber 11, the susceptor pierces the inside of the aerosol generating article 20 and comes into contact with the aerosol generating substrate. Accordingly, when the susceptor 122 generates heat, the heat can be effectively transferred to the aerosol generating article 20 to bake the aerosol generating substrate. For example, as shown in (b) of FIG. 4, the susceptor is in the form of a metal tube, which is disposed on an inner surface of the base 121. When the aerosol generating article 20 is inserted into the chamber 11, the aerosol generating article 20 directly or indirectly comes into contact with the metal tube. Accordingly, when the metal tube generates heat, the heat can be effectively transferred to the aerosol generating article 20.

[0063] In some embodiments, the aerosol generating article 20 has a metal sheet or a metal needle built therein. When the aerosol generating article 20 is inserted into the chamber 11, the metal sheet or the metal needle built therein serves as a susceptor and generates heat under the action of the varying magnetic field generated by the induction coil, thereby baking the aerosol generating substrate. It can be understood that, in this embodiment, the susceptor is disposable and is discarded after the aerosol generating article 20 is used up.

[0064] In some embodiments, the susceptor is disposed upstream of the air inlet passage and does not directly contact the aerosol generating substrate. Instead, when the susceptor generates heat, the heat can be effectively transferred to the air to heat the air, and the heated air is then introduced into the aerosol generating article 20 to bake the aerosol generating substrate.

[0065] In some embodiments, the aerosol generating device 10 further includes an upper cover and a Hall sensor (not shown), the upper cover being configured to selectively cover the opening A of the aerosol generating device 10. In some embodiments, the upper cover is disposed on the housing and is configured to slide relative to the housing, thereby exposing or covering the opening A. In some embodiments, the upper cover is detachably coupled to the housing by a snap fit or a screw thread, or the like. The upper cover is opened when the aerosol generating device is used.

[0066] The upper cover has a magnet disposed therein. It can be understood that, when the upper cover is closed, the magnet does not correspond to the chamber 11 but corresponds to a space beside the chamber 11. The Hall sensor is disposed in the housing, and when the upper cover is closed, the magnet corresponds to the Hall sensor. The Hall sensor can detect a magnetic field and a change in the magnetic field, and thus can detect the opening or closing of the upper cover.

[0067] The battery 14 provides power for operating the aerosol-generating device 10. For example, the battery 14 can provide power to the heater 12, which receives the power to generate heat and heating energy. In addition, the battery 14 can provide power required for operating other elements provided in the aerosol-generating device 10. The battery 14 can be a rechargeable battery or a disposable battery. The battery 14 can be, but is not limited to, a lithium iron phosphate (LiFePO4) battery. For example, the battery 14 can be a lithium cobalt oxide (LiCoO2) battery or a lithium titanate battery.

[0068] The controller 15 can control the overall operation of the aerosol-generating device 10. Specifically, the controller 15 controls the operation of the battery 14 and the heater 12, and can also control the operation of other devices. In some embodiments, the controller 15 includes a memory for storing program instructions corresponding to the control method in any one of the method embodiments described below. Thus, the control method in any one of the method embodiments described below is implemented, the temperature of the body of the aerosol-generating device at the current time is obtained, the temperature of the body is compared with the first threshold value, it is determined that the above-mentioned generating device is in the state of extreme cold machine, and then the target temperature and / or preheating time of the heater in the preheating stage are dynamically adjusted according to the temperature of the body, the battery provides more energy to the heater according to the adjusted target temperature and / or preheating time to make up for the low temperature of the body, so that the aerosol-forming substrate can be fully preheated, sufficient aerosol can be generated, and the smoking taste is improved.

[0069] In some embodiments, as shown in FIG. 5, the aerosol-generating device 10 includes an atomizer 16, a device body 17, and a chamber 11. The atomizer 16 is provided with a liquid storage compartment and a liquid aerosol-forming substrate in the liquid storage compartment; in some embodiments, the atomizer is also provided with a heater inside for heating and atomizing the liquid aerosol-forming substrate. In some embodiments, the atomizer is not provided with a heater inside, but only has a liquid storage function, and is used in cooperation with an external heater to heat and atomize the liquid aerosol-forming substrate inside the atomizer. In some embodiments, the atomizer can also cooperate with an ultrasonic atomization element to ultrasonically atomize the liquid aerosol-forming substrate. The atomizer 16 is plug-inly installed in the chamber 11, and the device body 17 provides power and heating control for the atomizer 16. For example, the device body 17 includes a battery and a controller (not shown) inside, and similarly, the controller includes a memory for storing program instructions corresponding to the control method in any one of the method embodiments described below. Thus, the control method in any one of the method embodiments described below is implemented.

[0070] The control method applied to the aerosol-generating device provided in some embodiments of the present application will be described below in conjunction with the exemplary application and implementation of the aerosol-generating device provided in the embodiments of the present application.

[0071] Before introducing the control method, the working process of the aerosol generating device is briefly introduced.

[0072] After receiving the start heating instruction, the controller of the aerosol generating device controls the heater to heat by using a temperature control algorithm (such as a PID algorithm, etc.), so that the temperature of the heater meets the pre-set temperature curve.

[0073] Taking the PID algorithm as an example, the temperature sensor collects the temperature of the heater at a certain frequency. If the collected temperature of the heater at a certain time is lower than the target temperature corresponding to the time in the temperature curve, the duty cycle of the PWM pulse signal is increased to increase the voltage provided by the battery to the heater, so that the temperature is maintained at the target temperature. If the collected temperature of the heater at a certain time is higher than the target temperature corresponding to the time in the temperature curve, the duty cycle of the PWM pulse signal is reduced to reduce the voltage provided by the battery to the heater, so that the temperature is maintained at the target temperature.

[0074] The start heating instruction can be a signal generated by the user operating the input element, or can be obtained depending on the detection signal of the sensor. For example, the in-place trigger signal of the aerosol forming article 20 inserted into the aerosol generating device 10 is detected by a pressure sensor or an electrical parameter sensor, etc., the start signal by the user's suction is detected by an air flow sensor, or a signal generated by the user pressing a button, etc.

[0075] In some embodiments, the temperature curve includes a preheating phase and a puffing phase arranged in time sequence. The preheating phase includes a temperature rising phase and a temperature maintaining phase. Illustratively, the temperature of the heater first rises rapidly to a preheating temperature (such as about 250°C) in a short time, i.e. the temperature rising phase, so that the aerosol forming substrate is heated to generate aerosol, effectively reducing the waiting time for the consumer to start smoking. Then, in order to avoid the problem of burning or charring the aerosol forming substrate caused by continuous high temperature heating and to maintain a relatively long time for outputting aerosol, the preheating temperature or a temperature slightly lower than the preheating temperature (such as about 230°C) is maintained in the temperature maintaining phase. Aerosol can be generated in this phase, but it is generally not likely to be sucked out of the aerosol generating device by the user. After the end of the temperature maintaining phase, i.e. the end of the preheating phase, the aerosol generating device sends a puffable reminder, such as a light, a voice or a vibration prompt, to remind the user that the preheating is complete and the puffing action can be performed. Then, enter the puffing phase, which refers to the phase in which aerosol can be generated by the aerosol generating device at a satisfactory rate and inhaled by the user. The temperature in the puffing phase is maintained at the temperature maintaining temperature or a temperature slightly lower than the temperature maintaining temperature (such as about 220°C).

[0076] It can be understood that, in other embodiments, the preheating stage only includes the warming-up stage, and after the warming-up stage is completed, the preheating stage directly enters the puffing stage. That is, after the warming-up is completed, the preheating stage ends, and a sufficient amount of aerosol for puffing is generated, and the aerosol generating device sends a puffing reminder to remind the user that the preheating is completed and the puffing action can be performed.

[0077] From the working process of the aerosol generating device described above, it can be known that, in the preheating stage, the aerosol-forming substrate needs to be fully preheated by the heater to generate a sufficient amount of aerosol for puffing. Thus, at the end of the preheating stage, the user performs the puffing action under the prompt of the puffing reminder, and can puff a good-tasting and sufficient amount of aerosol.

[0078] However, when the aerosol generating device is in a low-temperature environment, because its own temperature is low, the heat generated by the heater in the preheating stage is transferred to the support structure around the heater, such as the tubular base body or the base, shell, etc. of the atomizer (i.e. the body of the aerosol generating device), in addition to being transferred to the aerosol-forming substrate, under the action of temperature difference. In this way, the aerosol-forming substrate may not be fully preheated due to insufficient absorption of heat, and the amount of smoke in the first few puffs may be insufficient, resulting in poor taste and affecting the user experience.

[0079] To solve the above problems, the embodiments of the present application provide a control method applied to an aerosol generating device. Please refer to FIG. 6, which is a flowchart of the control method applied to the aerosol generating device according to some embodiments of the present application.

[0080] As shown in FIG. 6, the method S1000 can specifically include the following steps:

[0081] S100: Obtain the body temperature of the aerosol generating device.

[0082] The body temperature is the temperature of the aerosol generating device, i.e. the temperature of the aerosol generating device when it is in use. When the aerosol generating device is not in operation, its body temperature is close to the ambient temperature, so the body temperature is not a fixed value, but varies according to the environment. For example, in extremely cold winter, the ambient temperature is relatively low, and the body temperature of the aerosol generating device is also low, such as -3°C; in relatively warm summer or spring, the body temperature of the aerosol generating device is also high, such as 15°C.

[0083] In some embodiments, the location where the aerosol generating device is located also affects the body temperature of the aerosol generating device. For example, in a relatively cold winter indoor environment, the ambient temperature is warmer than that outdoors, so the body temperature of the aerosol generating device is higher, such as 13°C.

[0084] In some embodiments, the aerosol-generating device further comprises a temperature sensor arranged near the heater. Before the heater is started to heat, the temperature sensor sends the temperature of the body collected to the controller, so that the controller can obtain the temperature of the body.

[0085] It can be understood that, in this embodiment, the temperature near the heater before the heater is heated is taken as the temperature of the body. In other embodiments, the temperature sensor for collecting the temperature of the body can also be arranged near the battery, and the position of the temperature sensor is not limited herein, as long as the temperature sensor is located inside the aerosol-generating device, and the temperature collected by the temperature sensor before the heater is heated represents the temperature of the body.

[0086] S200: If the temperature of the body is less than or equal to the first threshold value, it is determined that the aerosol-generating device is in an extreme cold state.

[0087] The first threshold value is a specific temperature threshold value pre-set in the controller or in a memory in communication connection with the controller, for example, 10℃. Here, the first threshold value is used as a judgment condition for whether the aerosol-generating device is in an extreme cold state. After obtaining the temperature of the body of the aerosol-generating device, whether the aerosol-generating device is in an extreme cold state is determined by comparing the temperature of the body with the first threshold value.

[0088] The extreme cold state refers to that the current temperature of the body of the aerosol-generating device is less than or equal to the first threshold value, i.e., the temperature of the current environment in which the aerosol-generating device is located is relatively low. In the extreme cold state, when the heater is started to heat, due to a large temperature difference between the heater and the support structure around the heater, the heat generated by the heater is largely transferred to the support structure around the heater under the action of the temperature difference, resulting in that the aerosol-forming substrate cannot be sufficiently preheated due to insufficient heat absorbed by the aerosol-forming substrate, and the taste of the first few puffs of the aerosol-forming substrate is poor.

[0089] If the temperature of the body is less than or equal to the first threshold value, it is determined that the aerosol-generating device is in an extreme cold state. For example, if the first threshold value is 5℃ and the temperature of the body is 2℃, it is determined that the current aerosol-generating device is in an extreme cold state; for another example, if the first threshold value is 3℃ and the temperature of the body is -5℃, it is determined that the current aerosol-generating device is in an extreme cold state.

[0090] In this embodiment, whether the aerosol-generating device is in an extreme cold state is determined by comparing the temperature of the body of the aerosol-generating device with the first threshold value, which is more accurate and more in line with the actual situation compared with directly determining whether the aerosol-generating device is in an extreme cold state by the temperature of the environment or other conditions.

[0091] S300: Adjusting the target temperature and / or preheating time of the heater in the preheating phase according to the temperature of the body of the aerosol generating device in the extreme cold state, so as to control the power supply of the electric core to the heater based on the adjusted target temperature and / or preheating time to complete the preheating.

[0092] As can be seen from the working process of the aerosol generating device, the preheating phase is a period of time after the start of heating of the aerosol generating device, and in the preheating phase, the temperature of the aerosol-forming substrate needs to be quickly increased to reach a temperature at which a satisfactory amount of aerosol is generated to meet the demand for smoking in the smoking phase. The preheating phase usually lasts for a short time, for example, about 30 seconds; the target temperature of the preheating phase is the temperature that the heater needs to reach in the preheating phase, for example, 250°C.

[0093] In the extreme cold state, the temperature of the body of the aerosol generating device is low, and the heat generated by the heater in the preheating phase is more conducted to the support structure around the heater, affecting the heat absorbed by the aerosol-forming substrate. Therefore, in the extreme cold state, the heater needs to generate more heat to make up for the low temperature of the body.

[0094] In some embodiments, increasing the heat generated by the heater in the preheating phase includes three ways: first, the controller increases the target temperature of the preheating phase according to the temperature of the body, it can be understood that the higher the target temperature, the more energy the electric core provides to the heater, and the more heat the heater generates; second, the controller increases the preheating time of the preheating phase according to the temperature of the body, that is, by prolonging the preheating time, the heat generated by the heater in the preheating phase is increased; third, the controller increases both the target temperature and the preheating time according to the temperature of the body, that is, the target temperature is increased while the preheating time is increased, so as to increase the heat generated by the heater in the preheating phase.

[0095] As can be seen, in the extreme cold state, increasing the heat generated by the heater in the preheating phase can effectively make up for the heat consumption caused by the low temperature of the body, ensuring that the aerosol-forming substrate can be fully preheated, so as to effectively improve the problem that the taste of the first few puffs of the aerosol generating device is not good under the extreme cold condition, and improve the user experience.

[0096] In some embodiments, the foregoing step S300 specifically comprises:

[0097] S310: Determining a temperature increment according to the temperature of the body.

[0098] S320: Taking the sum of the target temperature and the temperature increment as the adjusted target temperature.

[0099] During use of the aerosol-generating device, if the aerosol-generating device is in an extremely cold state, the temperature of the body of the aerosol-generating device is low and the heat dissipation is fast. In addition to the heat generated by the heater being transferred to the aerosol-forming substrate, a large amount of heat is also transferred to the support structure around the heater. Therefore, the aerosol-generating device in the extremely cold state needs the heater to generate more heat to ensure that the aerosol-forming substrate can generate sufficient aerosol for the user to smoke.

[0100] In some embodiments, the aerosol-generating device increases the target temperature of the preheating stage to increase the heat generated by the heater in the preheating stage, so as to ensure that the aerosol-forming substrate can obtain sufficient heat to generate smoke in the preheating stage. As shown in FIG. 7, the increased target temperature of the preheating stage is the temperature increment. The temperature increment is determined according to the temperature of the body of the aerosol-generating device, so different temperature increments correspond to different body temperatures, for example, the temperature increment that needs to be increased is 5°C when the temperature of the body of the aerosol-generating device is 8°C; the temperature increment that needs to be increased is 10°C when the temperature of the body of the aerosol-generating device is -5°C. It can be understood that the sum of the target temperature and the temperature increment is the adjusted target temperature.

[0101] When the aerosol-generating device is in an extremely cold state, the temperature increment is determined according to the temperature of the body, which has better adaptability compared to directly setting a fixed temperature increment. It can adapt to various temperature conditions and more accurately control the heat generated by the heater according to the actual situation to make up for the low temperature of the body, reduce the situation that the heat supply is insufficient to generate an appropriate amount of aerosol, and reduce the situation that the heat supply is excessive and causes power waste, that is, the aerosol-forming substrate can be fully preheated and power consumption can be saved.

[0102] In some embodiments, the aforementioned temperature increment is negatively correlated with the temperature of the body. When the aerosol-generating device is in an extremely cold state, the temperature of the body of the aerosol-generating device is low, and the support structure around the heater obtains part of the heat provided by the heater to the aerosol-forming substrate, so that the aerosol-forming substrate cannot be preheated sufficiently. In order to make up for the heat consumed by the body, a higher target temperature can be set, so the temperature increment is also higher; on the contrary, the higher the temperature of the body, the lower the target temperature that needs to be increased, so the temperature increment is also lower.

[0103] For example, the temperature increment that needs to be increased is 5°C when the temperature of the body of the aerosol-generating device is 8°C; the temperature increment that needs to be increased is 10°C when the temperature of the body of the aerosol-generating device is -5°C; the temperature increment that needs to be increased is 7°C when the temperature of the body of the aerosol-generating device is 3°C.

[0104] If the aerosol-generating device is in an extremely cold state, the required temperature increment thereof is negatively correlated with the body temperature, which can effectively balance the heat demand and power consumption required for sufficient preheating. When the body temperature of the aerosol-generating device is low, more heat generated by the heater is conducted to the support structure (i.e., the body) of the aerosol-generating device, and thus the heater needs to generate more heat, and the corresponding temperature increment is large. When the body temperature of the aerosol-generating device is relatively high, compared with other cases, less heat generated by the heater is conducted to the support structure (i.e., the body) of the aerosol-generating device, and thus the heater needs to provide less additional heat, and the corresponding temperature increment is small.

[0105] In this embodiment, the temperature increment is determined according to the actual situation, and the heat generated by the heater is adjusted, on the one hand, to ensure that the aerosol-forming substrate can be preheated sufficiently, and on the other hand, to accurately distribute the power provided by the battery to the heater, thereby reducing power loss.

[0106] In some embodiments, the foregoing step S310 specifically comprises:

[0107] S311: If the body temperature is less than or equal to the second threshold value, the temperature increment is determined to be the first temperature increment.

[0108] S312: If the body temperature is greater than or equal to the third threshold value, the temperature increment is determined to be the second temperature increment 。

[0109] S313: If the body temperature is greater than the second threshold value and less than the third threshold value, the temperature increment is determined to be the third temperature increment; the third temperature increment is greater than the second temperature increment and less than the first temperature increment.

[0110] If the aerosol-generating device is in an extremely cold state, the required temperature increment thereof is negatively correlated with the body temperature, in order to calculate the corresponding required temperature increment of the aerosol-generating device, an extremely cold machine temperature calculation range is set in advance. The minimum value of the above-mentioned extremely cold machine temperature calculation range is the second threshold value, and the maximum value of the above-mentioned extremely cold machine temperature calculation range is the third threshold value.

[0111] The required temperature increment of the aerosol-generating device is divided into three cases for calculation through the relationship between the body temperature of the aerosol-generating device and the extremely cold machine calculation range: if the body temperature is less than or equal to the second threshold value, the temperature increment is determined to be the first temperature increment; if the body temperature is greater than or equal to the third threshold value, the temperature increment is determined to be the second temperature increment; if the body temperature is greater than the second threshold value and less than the third threshold value, the temperature increment is determined to be the third temperature increment.

[0112] In some embodiments, the extreme cold machine temperature calculation range of the aerosol generating device is (-5℃, 5℃), i.e., the second threshold is -5℃ and the third threshold is 5℃. If the body temperature of the aerosol generating device is -6℃, the temperature increment is the first temperature increment Δtemp1; if the body temperature of the aerosol generating device is 6℃, the temperature increment is the second temperature increment Δtemp2; if the body temperature of the aerosol generating device is 0℃, the temperature increment is the third temperature increment Δtemp3. Among them, the second temperature increment Δtemp2 < the third temperature increment Δtemp3 < the first temperature increment Δtemp1.

[0113] In the state of extreme cold machine, the aerosol generating device needs the heater to generate more heat to make the aerosol forming substrate generate sufficient aerosol, therefore, the aerosol generating device controls the heater to generate more heat by increasing the target temperature of the preheating stage, and the above-mentioned increased target temperature is the temperature increment. The temperature increment is determined according to the body temperature of the aerosol generating device, which is essentially the heat increment provided by the heater to the aerosol generating device. If the heat increment provided by the heater is too high, the aerosol generating device has safety problems such as thermal runaway, therefore, a temperature increment range, i.e., a target temperature increment range, is set in advance to improve the safety of the aerosol generating device during use.

[0114] The first temperature increment is the maximum value of the change amount of the target temperature, i.e., the maximum value of the above-mentioned temperature increment range; the second temperature increment is the minimum value of the change amount of the target temperature, i.e., the minimum value of the above-mentioned temperature increment range. For example, the temperature increment range set in advance by the aerosol generating device is (10℃, 15℃), then the first temperature increment is 15℃ and the second temperature increment is 10℃.

[0115] When the body temperature of the aerosol generating device is less than the second threshold, it is considered that the aerosol generating device is in a relatively cold environment, and a larger temperature increment is needed, so the first temperature increment is larger; when the body temperature of the aerosol generating device is greater than the third threshold, it is considered that the aerosol generating device is in a slightly cold environment, and a smaller temperature increment is needed, so the second temperature increment is smaller; when the body temperature of the aerosol generating device is greater than the second threshold and less than the third threshold, it is considered that the aerosol generating device is in a general cold environment, so the third temperature increment is smaller than the first temperature increment and larger than the second temperature increment, i.e., the second temperature increment < the third temperature increment < the first temperature increment.

[0116] In this embodiment, in the extreme cold machine state, the aerosol generating device calculates the corresponding temperature increment according to different situations, adjusts the power supply of the battery cell according to the actual situation of the environment where the aerosol generating device is located to improve the heat output of the heater, which can effectively ensure that the aerosol forming substrate is preheated sufficiently, and can also save power consumption. In addition, it can also reduce the occurrence of thermal runaway, which is conducive to improving safety.

[0117] In some embodiments, the foregoing step S313 specifically comprises:

[0118] (a) calculating a first difference between the third threshold value and the body temperature, a second difference between the second threshold value and the third threshold value, and a third difference between the first temperature increment and the second temperature increment.

[0119] (b) taking the ratio of the first difference to the second difference as the weighting coefficient of the third difference, and weighting and summing the second temperature increment to obtain the third temperature increment.

[0120] The first difference is the difference between the body temperature and the third threshold value; the second difference is the difference between the third threshold value and the second threshold value; and the third difference is the size of the temperature increment range. Therefore, the ratio of the first difference to the second difference is less than 1. Taking the ratio of the first difference to the second difference as the weighting coefficient of the third difference, and then summing the minimum value of the temperature increment range, ensures that the third temperature increment is within the temperature increment range.

[0121] It can be understood that if the body temperature of the aerosol generating device is machine_temper, the extreme cold machine temperature calculation range is (COLD_TEMPER_MIN, COLD_TEMPER_MAX), the temperature increment range is (ADD_TEMPER_MIN, ADD_TEMPER_MAX), and the body temperature of the aerosol generating device is greater than the second threshold value and less than the third threshold value, the third temperature increment can be calculated by the following formula: (COLD_TEMPER_MAX-machine_temper) / (COLD_TEMPER_MAX-COLD_TEMPER_MIN)*(ADD_TEMPER_MAX-ADD_TEMPER_MIN)+ADD_TEMPER_MIN.

[0122] Exemplarily, the temperature of the aerosol-generating device is 0℃, i.e., machine_temper = 0; the extreme cold machine temperature calculation range is (-5℃, 5℃), i.e., COLD_TEMPER_MIN = -5, COLD_TEMPER_MAX = 5; the temperature increment range is (5℃, 10℃), i.e., ADD_TEMPER_MIN = 5, ADD_TEMPER_MAX = 10; then the third temperature increment is (10-0) / [5-(-5)]*(10-5)+5 = 10℃.

[0123] In this embodiment, if the machine temperature of the aerosol-generating device is in the extreme cold machine calculation range, it is determined that the aerosol-generating device is in the extreme cold machine state, and the corresponding temperature increment is obtained by calculation according to the machine temperature of the aerosol-generating device, so that even if the machine temperatures of different aerosol-generating devices are all in the extreme cold machine range, their respective temperature increments are different. That is, the machine temperatures of the aerosol-generating devices are different in different use scenarios, and even if the above machine temperatures are all in the extreme cold machine range, the temperature increments corresponding to different machine temperatures are different. Therefore, compared with adopting a fixed temperature increment for different machine temperatures, the temperature increment in this embodiment fluctuates within the increment range and has a corresponding relationship with the machine temperature, so that the temperature increment is accurate, which is conducive to precise temperature control, thereby better improving the smoking taste.

[0124] In some embodiments, the foregoing step S300 further comprises:

[0125] S330: determining the time increment according to the machine temperature.

[0126] S340: taking the sum of the preheating time and the time increment as the adjusted preheating time.

[0127] In the extreme cold machine state, because the temperature of the environment in which the aerosol-generating device is located is low, the aerosol-generating device dissipates heat quickly, and the heat generated by the heater is not only transferred to the aerosol-forming substrate but also transferred to the support structure around the heater in a large amount. Therefore, the aerosol-forming substrate cannot obtain enough heat for its preheating. It can be seen that the aerosol-generating device in the extreme cold machine state needs the heater to provide more heat to ensure that the aerosol-forming substrate can be fully preheated and generate sufficient smoke for the user to smoke.

[0128] In some embodiments, the preheat time of the preheat stage is increased to increase the heat generated by the heater in the preheat stage, to ensure that the aerosol-forming substrate can obtain sufficient heat to generate sufficient aerosol in the preheat stage. As shown in FIG. 7, the increased preheat time of the preheat stage is the time increment. The time increment is determined according to the temperature of the body of the aerosol generating device, and thus different body temperatures correspond to different time increments. For example, when the temperature of the body of the aerosol generating device is 5°C, the corresponding time increment is 5s; when the temperature of the body of the aerosol generating device is -5°C, the corresponding time increment is 10s.

[0129] When the aerosol generating device is in an extremely cold state, determining the time increment according to the temperature of the body has better adaptability than directly setting a fixed time increment, can adapt to various temperature conditions, and can more accurately control the heat generated by the heater according to the actual situation to compensate for the low temperature of the body, reduce the situation that the heat supply is insufficient to generate sufficient aerosol, and reduce the situation that the heat supply is excessive, causing power waste and long user waiting time, that is, the aerosol-forming substrate can be fully preheated, and power consumption can be saved, and the user waiting time can be avoided.

[0130] In some embodiments, the aforementioned time increment is negatively correlated with the temperature of the body. In an extremely cold state, the temperature of the body of the aerosol generating device is low and the heat dissipation is fast, and the heat generated by the heater is partially conducted to the support structure around the heater. In order to compensate for the heat consumed by the body, a longer preheat time can be set, and thus the time increment is larger. On the contrary, the higher the temperature of the body, the shorter the preheat time that needs to be increased, and thus the time increment is smaller.

[0131] For example, when the temperature of the body of the aerosol generating device is 6°C, the corresponding time increment is 5s; when the temperature of the body of the aerosol generating device is -6°C, the corresponding time increment is 10s; and when the temperature of the body of the aerosol generating device is -3°C, the corresponding time increment is 6.6s.

[0132] If the aerosol generating device is in an extremely cold state, the required time increment is negatively correlated with the temperature of the body, which can effectively balance the heat demand required for sufficient preheating, power consumption, and the length of time for waiting to smoke. When the temperature of the body of the aerosol generating device is low, more heat generated by the heater is conducted to the support structure (i.e., the body) of the aerosol generating device, and thus the heater needs to generate more heat, and thus the corresponding time increment is larger. When the temperature of the body of the aerosol generating device is relatively high, compared with other conditions, less heat generated by the heater is conducted to the support structure (i.e., the body) of the aerosol generating device, and thus the heater needs to provide less additional heat, and thus the corresponding time increment is smaller.

[0133] In this embodiment, the time increment is determined according to actual conditions to adjust the heat generated by the heater, on the one hand to ensure that the aerosol-forming substrate can be preheated sufficiently, and on the other hand to accurately distribute the power provided by the electric core to the heater, reduce power loss, and also make the smoking waiting time reasonable.

[0134] In some embodiments, the step S340 specifically comprises:

[0135] S341: If the body temperature is less than or equal to the second threshold value, the time increment is determined as the first time increment 。

[0136] S342: If the body temperature is greater than or equal to the third threshold value, the time increment is determined as the second time increment 。

[0137] S343: If the body temperature is greater than the second threshold value and less than the third threshold value, the time increment is determined as the third time increment; the third time increment is greater than the second time increment and less than the first time increment.

[0138] If the aerosol-generating device is in an extremely cold state, the required temperature increment thereof is negatively correlated with the body temperature. In order to calculate the corresponding required time increment of the aerosol-generating device, an extremely cold temperature calculation range is set in advance.

[0139] The required time increment of the aerosol-generating device is divided into three cases for calculation through the relationship between the body temperature of the aerosol-generating device and the extremely cold calculation range: if the body temperature is less than or equal to the second threshold value, the time increment is determined as the first time increment; if the body temperature is greater than or equal to the third threshold value, the time increment is determined as the second time increment; if the body temperature is greater than the second threshold value and less than the third threshold value, the time increment is determined as the third time increment.

[0140] In some embodiments, the extremely cold temperature calculation range of the aerosol-generating device is (-5℃, 5℃), that is, the second threshold value is -5℃ and the third threshold value is 5℃. If the body temperature of the aerosol-generating device is -6℃, the time increment is the first time increment Δtemp1; if the body temperature of the aerosol-generating device is 6℃, the time increment is the second time increment Δtemp2; if the body temperature of the aerosol-generating device is 0℃, the time increment is the third time increment Δtemp3. Among them, the second time increment Δtime2 < the third time increment Δtime3 < the first time increment Δtime1.

[0141] In the state of extreme cold machine, the aerosol generating device needs the heater to generate more heat to make the aerosol forming substrate generate enough aerosol, so the aerosol generating device controls the heater to generate more heat by increasing the preheating time of the preheating stage. Please refer to Figure 7 again, the above-mentioned increased preheating time is the time increment. The time increment is determined according to the body temperature of the aerosol generating device, which is essentially the heat increment provided by the heater to the aerosol generating device. If the heat increment provided by the heater is too high, the aerosol generating device has safety problems such as thermal runaway, so a time increment range, that is, a preheating time increment range, is set in advance to improve the safety of the aerosol generating device during use.

[0142] The first time increment is the maximum value of the change amount of the preheating time, that is, the maximum value of the above-mentioned time increment range; the second time increment is the minimum value of the change amount of the preheating time, that is, the minimum value of the above-mentioned time increment range. For example, the aerosol generating device pre-sets the time increment range to be (5s, 10s), so the first time increment is 10s and the second time increment is 5s.

[0143] When the body temperature of the aerosol generating device is less than the second threshold value, it is considered that the device is in a relatively cold environment and needs to increase more preheating time, so the first time increment is larger; when the body temperature of the aerosol generating device is greater than the third threshold value, it is considered that the device is in a slightly cold environment and needs to increase less preheating time, so the second time increment is smaller; when the body temperature of the aerosol generating device is greater than the second threshold value and less than the third threshold value, it is considered that the aerosol generating device is in a general cold environment, so the third time increment needed to increase the preheating time is less than the first time increment and greater than the second time increment, that is, the second time increment < the third time increment < the first time increment.

[0144] In this embodiment, if the temperature of the body of the aerosol generating device is less than or equal to the minimum value of the extreme cold machine temperature calculation range, i.e., the second threshold value, it is considered that the aerosol generating device is in a relatively cold environment, and the heater needs to provide more heat to determine that the aerosol forming substrate can generate sufficient smoke, so the time increment is the maximum value of the pre-set time increment range; if the temperature of the body is greater than or equal to the third threshold value, it is considered that the aerosol generating device is in a slightly cold environment, and the heater increases the heat supply by a small amount to determine that the aerosol forming substrate generates sufficient smoke, so the time increment is the minimum value of the pre-set time increment range; if the temperature of the body is less than or equal to the third threshold value and greater than or equal to the second threshold value, the preheating time to be added is calculated according to the pre-set formula. In the extreme cold machine state, the aerosol generating device calculates the corresponding time increment according to different conditions, adjusts the power supply of the battery according to the actual situation of the environment in which the aerosol generating device is located to improve the heat output of the heater, which can effectively ensure that the aerosol forming substrate is preheated sufficiently, and can also save power consumption, so that the smoking waiting time is reasonable. In addition, it can also reduce the occurrence of thermal runaway, which is conducive to improving safety.

[0145] In some embodiments, the foregoing step S343 specifically comprises:

[0146] (c) calculating a first difference value between the third threshold value and the temperature of the body, a second difference value between the second threshold value and the third threshold value, and a fourth difference value between the first time increment and the second time increment.

[0147] (d) taking the ratio of the first difference value to the second difference value as a weighting coefficient of the fourth difference value, and weighting and summing the second time increment to obtain a third time increment.

[0148] The first difference value is the difference between the temperature of the body and the third threshold value; the second difference value is the difference between the third threshold value and the second threshold value; and the fourth difference value is the size of the time increment range. Therefore, the ratio of the first difference value to the second difference value is less than 1, and the ratio of the first difference value to the second difference value is taken as the weighting coefficient of the fourth difference value, and then the minimum value of the time increment range is summed to ensure that the fourth time increment is within the time increment range.

[0149] It can be understood that, if the temperature of the body of the aerosol generating device is machine_temper, the extreme cold machine temperature calculation range is (COLD_TEMPER_MIN, COLD_TEMPER_MAX), the time increment range is (ADD_TIME_MIN, ADD_TIME_MAX), and the temperature of the body is greater than the second threshold value and less than the third threshold value, the third time increment can be calculated by the following formula,

[0150] (COLD_TEMPER_MAX - machine_temper) / (COLD_TEMPER_MAX - COLD_TEMPER_MIN) * (ADD_TIME_MAX - ADD_TIME_MIN) + ADD_TIME_MIN.

[0151] Exemplarily, the temperature of the aerosol generating device is 0℃, i.e., machine_temper = 0; the extreme cold machine temperature calculation range is (-5℃, 5℃), i.e., COLD_TEMPER_MIN = -5, COLD_TEMPER_MAX = 5; the time increment range is (5s, 10s), i.e., ADD_TIME_MIN = 5, ADD_TIME_MAX = 10; then the third temperature increment is (10 - 0) / [5 - (-5)] * (10 - 5) + 5 = 10s.

[0152] In this embodiment, if the body temperature of the aerosol generating device is within the extreme cold machine calculation range, it is determined that the aerosol generating device is in the extreme cold machine state, and the corresponding time increment is obtained by calculation according to the body temperature of the aerosol generating device. Therefore, even if the body temperatures of different aerosol generating devices are all within the extreme cold machine range, their respective corresponding time increments are different. That is, in different use scenarios, the body temperatures of the aerosol generating devices are different, and even if the above-mentioned body temperatures are all within the extreme cold machine range, the time increments corresponding to different body temperatures are different. Therefore, compared with adopting a fixed time increment for different body temperatures, the time increment in this embodiment fluctuates within the increment range and has a corresponding relationship with the body temperature, so that the time increment is accurate, which is conducive to precise temperature control, thereby better improving the smoking taste.

[0153] It can be understood that in some embodiments, only the target temperature can be adjusted, i.e., the temperature increment is determined, and the sum of the target temperature and the temperature increment is taken as the adjusted target temperature. In some embodiments, only the preheating time can be adjusted, i.e., the time increment is determined, and the sum of the preheating time and the time increment is taken as the adjusted preheating time. At the end of the preheating phase, the user is reminded to smoke. That is, the time for reminding the user to smoke is delayed.

[0154] In some embodiments, as shown in FIG. 7, the target temperature and the preheating time can be adjusted at the same time, the temperature increment and the time increment are determined respectively, the sum of the target temperature and the temperature increment is taken as the adjusted target temperature, and the sum of the preheating time and the time increment is taken as the adjusted preheating time. That is, the target temperature is increased and the time for reminding the user to smoke is prolonged at the same time, so that the heater generates more heat in the preheating phase, makes up for the low body temperature, and makes the aerosol forming substrate be sufficiently preheated.

[0155] In summary, the control method in the embodiments of the present application obtains the temperature of the body of the aerosol generating device, compares the obtained temperature of the body with the first threshold value set in advance, and determines whether the aerosol generating device is in an extreme cold start state. The temperature increment and / or time increment required by the aerosol generating device in the extreme cold start state are determined by calculating the obtained temperature of the body of the aerosol generating device with the temperature increment range and / or time increment range. According to the actual situation, the heat provided by the heater to the generating device is accurately controlled, unnecessary heat loss is effectively reduced, the aerosol generating substrate can be fully preheated, the problem of poor taste of the first few puffs of the aerosol generating device before smoking is improved, and the user experience is improved. In some embodiments, the aerosol generating device is pre-set with a second threshold value, a third threshold value, a temperature increment range and a time increment range in the extreme cold start state. According to the relationship between the temperature of the body of the aerosol generating device and the extreme cold start calculation range, the temperature increment and time increment required by the aerosol generating device are calculated in different cases. According to the temperature of the body of the aerosol generating device, the temperature increment and / or time increment required by the above-mentioned aerosol generating device is dynamically adjusted. Compared with the temperature increment and / or time increment required by the above-mentioned aerosol generating device being pre-set as a fixed value, the control method can adapt to different types of devices and different degrees of low temperature environment, and has strong adaptability.

[0156] It should be noted that the apparatus embodiments described above are only schematic and that many variations can be made to the described embodiments, by virtue of the components described as separate components can or can not be physically separate and the components described as components can or can not be physical components, that is, these components can be in one place or distributed over a number of network components. Some or all of the modules of these embodiments can be selected according to the actual needs to achieve the purpose of the embodiments.

[0157] From the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a general hardware platform, and of course can also be implemented by hardware. Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by a computer program instructing related hardware, and the program can be stored in a computer readable storage medium. When the program is executed, it can include the processes of the above-mentioned embodiment methods. The storage medium can be a magnetic disc, an optical disc, a read-only memory (ROM) or a random access memory (RAM), etc.

[0158] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but not to limit them; under the idea of the present application, the technical features in the above examples or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in details for simplicity; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A control method of an aerosol generating device, the control method comprising: The aerosol-generating device comprises a heater for heating an aerosol-forming article to generate an aerosol, and an electric core for providing power to the heater; The method comprises: obtaining a body temperature of the aerosol-generating device; adjusting a target temperature and / or a preheating time of the heater in a preheating phase according to the body temperature, to control the electric core to provide power to the heater to complete preheating based on the adjusted target temperature and / or preheating time.

2. The control method according to claim 1, characterized by, The adjusting of the target temperature of the heater in the preheating phase according to the body temperature comprises: determining a temperature increment according to the body temperature; taking a sum of the target temperature and the temperature increment as the adjusted target temperature.

3. The control method according to claim 2, characterized by, The temperature increment is negatively correlated with the body temperature.

4. The control method according to claim 2, characterized by, The determining of the temperature increment according to the body temperature comprises: if the body temperature is less than or equal to a second threshold value, determining the temperature increment as a first temperature increment; if the body temperature is greater than or equal to a third threshold value, determining the temperature increment as a second temperature increment; if the body temperature is greater than the second threshold value and less than the third threshold value, determining the temperature increment as a third temperature increment; the third temperature increment is greater than the second temperature increment and less than the first temperature increment.

5. The control method according to claim 4, characterized by The determining of the temperature increment as the third temperature increment specifically comprises: calculating a first difference between the third threshold value and the body temperature, a second difference between the second threshold value and the third threshold value, and a third difference between the first temperature increment and the second temperature increment; taking a ratio of the first difference to the second difference as a weighting coefficient of the third difference, and performing weighted summation on the second temperature increment to obtain the third temperature increment.

6. The control method according to claim 1, characterized by, The adjusting of the preheating time of the heater in the preheating phase comprises: determining a time increment according to the body temperature; taking a sum of the preheating time and the time increment as the adjusted preheating time.

7. The control method according to claim 6, characterized by The time increment is negatively correlated with the body temperature.

8. The control method according to claim 6, characterized by The determining of the time increment according to the body temperature comprises: if the body temperature is less than or equal to a second threshold value, determining the time increment as a first time increment; if the body temperature is greater than or equal to a third threshold value, determining the time increment as a second time increment; if the body temperature is greater than the second threshold value and less than the third threshold value, determining the time increment as a third time increment; the third time increment is greater than the second time increment and less than the first time increment.

9. The control method according to claim 8, characterized by, The determining of the time increment as the third time increment comprises: calculating a first difference between the third threshold value and the body temperature, a second difference between the second threshold value and the third threshold value, and a fourth difference between the first time increment and the second time increment; taking a ratio of the first difference to the second difference as a weighting coefficient of the fourth difference, and performing weighted summation on the second time increment to obtain the third time increment.

10. An aerosol-generating device comprising: comprises a heater for heating an aerosol-forming article to generate an aerosol; ​ one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including programs for performing the control method of any one of claims 1 to 9.

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