Control method for aerosol generating apparatus, and aerosol generating apparatus

Abstract

Disclosed in the embodiments of the present application are a control method for an aerosol generating apparatus, and an aerosol generating apparatus. The aerosol generating apparatus comprises a power supply and a heating element, which is configured to heat an aerosol article to generate an aerosol. The control method comprises: acquiring a first temperature value of the heating element; acquiring a second temperature value obtained after compensating for the first temperature value, wherein the second temperature value is greater than the first temperature value; on the basis of the second temperature value, and a target temperature value of the heating element, determining power that is output to the heating element; and controlling the power supply to output the power, such that the first temperature value of the heating element approaches the target temperature value of the heating element, wherein the first temperature value is an actual temperature value of the heating element in a current state. By means of the method, a significant overshoot phenomenon generated by the heating element of the aerosol generating apparatus generating during a heating process can be alleviated.

Description

Control method of aerosol generating device and aerosol generating device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to a Chinese patent application filed with the Patent Office of China on January 25, 2024, with application number 202410104730.X, entitled “Control Method for Aerosol Generating Device and Aerosol Generating Device,” the entire contents of which are incorporated herein by reference. Technical Field

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

[0004] Traditional tobacco products (e.g., cigarettes, cigars, etc.) burn tobacco to produce tobacco smoke during use. Products that release compounds through heating rather than combustion are already available as alternatives to these traditional tobacco products. Examples of such products are aerosol-generating devices, which typically include a heating element and an aerosol product. The aerosol product can be a solid tobacco or non-tobacco filler. The heating element heats the aerosol product, causing at least a portion of the active substance in the aerosol product to volatilize or atomize due to the heat, generating an aerosol.

[0005] The above-mentioned heating element usually uses a resistive heating element to heat the aerosol-generating product. When the heating element reaches the target temperature value, the aerosol-generating product can be heated and volatilized at this temperature value to produce an aerosol with a better taste. However, due to the nature of the resistive heating element itself, when the heating element reaches the target temperature value, the temperature of the heating element will continue to rise for a period of time, thereby causing an overshoot phenomenon. This overshoot phenomenon will affect the temperature control of the heating element and thus affect the taste of the aerosol. Summary of the Invention

[0006] The embodiments of the present application provide a control method for an aerosol generating device to solve the technical problem that a heating element of the aerosol generating device generates a relatively obvious overshoot phenomenon during the heating process.

[0007] A method for controlling an aerosol generating device, the aerosol generating device comprising a power supply and a heating element, the heating element being used to heat an aerosol article to generate an aerosol, the method comprising:

[0008] obtaining a first temperature value of the heating element;

[0009] Acquire a second temperature value after compensating the first temperature value, the second temperature value being greater than the first temperature value;

[0010] determining a power output to the heating element based on the second temperature value and a target temperature value of the heating element;

[0011] controlling the power supply to output the power so that the first temperature value of the heating element approaches the target temperature value of the heating element;

[0012] The first temperature value is the actual temperature value of the heating element in the current state.

[0013] In one embodiment, the method further comprises:

[0014] Acquiring the second temperature value within a first preset time period;

[0015] The first preset time duration is the time duration from when the heating element starts heating to when it reaches the target temperature value.

[0016] In one embodiment, the method further comprises:

[0017] Acquire a compensated temperature value corresponding to the first temperature value;

[0018] The second temperature value is obtained by adding the first temperature value and the compensated temperature value.

[0019] In one embodiment, the first temperature value comprises an initial temperature value of the heating element when heating is started, and the method further comprises:

[0020] It is determined whether a first temperature value of the heating element is less than a preset first temperature threshold, and if so, temperature compensation is performed on the first temperature value.

[0021] In one embodiment, the method further comprises:

[0022] Obtaining the duration between the start of the aerosol generating device and the last stop of the aerosol generating device;

[0023] Determining whether the interval duration is greater than a second preset duration;

[0024] If so, the first temperature value is compensated.

[0025] In one embodiment, the compensation temperature values ​​include multiple compensation temperature values, which include adjacent first compensation temperature values ​​and a second compensation temperature value located after the first compensation temperature value, and the second compensation temperature value is not greater than the first compensation temperature value.

[0026] In one embodiment, the aerosol generating device has a first preset time period for the heating element to start heating and reach a target temperature value, and the first temperature value is obtained within the first preset time period, the first preset time period including a first time segment adjacent to each other and a second time segment located after the first time segment, and the method further includes:

[0027] In the first time section, obtaining a plurality of identical first compensated temperature values;

[0028] In the second time section, obtaining a plurality of identical second compensated temperature values;

[0029] The second compensation temperature value is smaller than the first compensation temperature value.

[0030] In one embodiment, the method further comprises:

[0031] The first temperature value is compensated when the heating element starts heating.

[0032] In one embodiment, the method further comprises:

[0033] Determining whether the first temperature value reaches a preset second temperature threshold;

[0034] If so, the first temperature value is compensated.

[0035] In one embodiment, the time interval between any two adjacent acquisitions of the first temperature value is 1 second.

[0036] In one embodiment, the second temperature value and the target temperature value are input into a PID control system to determine a duty cycle output to the heating element.

[0037] An embodiment of the present application further provides an aerosol generating device, characterized in that the controller includes a processor and a memory, the memory stores a computer program, and when the processor executes the computer program, the control method of the aerosol generating device described in the above embodiment is implemented.

[0038] The control method provided in the above embodiment compensates the first temperature value of the heating element to obtain a second temperature value, wherein the second temperature value is greater than the first temperature value, and then provides power to the heating element based on the second temperature value and the target temperature value, so that the first temperature value of the heating element approaches the target temperature value, which can reduce the temperature rise rate of the heating element before reaching the target temperature value, thereby at least partially alleviating the more obvious overshoot generated after the heating element reaches the target temperature value. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0040] FIG1 is a schematic structural diagram of an aerosol generating device provided in one embodiment of the present application;

[0041] FIG2 is a schematic structural diagram of an aerosol generating device provided in another embodiment of the present application;

[0042] FIG3 is a schematic diagram of a heating curve of the aerosol generating device in FIG1 before an overshoot process;

[0043] FIG4 is a schematic diagram of a heating curve of the aerosol generating device in FIG1 after overshoot treatment;

[0044] FIG5 is a schematic flow chart of a method for controlling an aerosol generating device according to an embodiment of the present application;

[0045] FIG6 is a schematic flow chart of a method for controlling an aerosol generating device according to another embodiment of the present application;

[0046] FIG7 is a schematic flow chart of a method for controlling an aerosol generating device according to another embodiment of the present application;

[0047] FIG8 is a schematic diagram of the hardware structure of a controller of an aerosol generating device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0048] In order to facilitate the understanding of the present application, the present application is described in more detail below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" / "fixed to" another element, it can be directly on the other element, or one or more intermediate elements can exist therebetween. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements can exist therebetween. The terms "upper", "lower", "left", "right", "inside", "outside" and similar expressions used in this specification are for illustrative purposes only.

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

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

[0051] In the embodiments of the present application, the "installation" includes fixing or restricting a component or device to a specific position or place by welding, screwing, clamping, bonding, etc. The component or device can remain stationary at a specific position or place or can move within a limited range. After the component or device is fixed or restricted to a specific position or place, it may or may not be disassembled, which is not limited in the embodiments of the present application.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0053] One embodiment of the present application provides an aerosol generating device 100. As shown in FIG1 , the aerosol generating device 100 includes a battery cell 10, a mainboard 20, and a heating element 30. The mainboard 20 is provided with a controller for the aerosol generating device 100. The battery cell 10 and the heating element 30 are electrically connected to the controller, respectively, so that the controller can control the battery cell 10 to provide electrical energy to the heating element 30. The aerosol generating device 100 also includes a longitudinally extending chamber 40 for accommodating an aerosol generating product 200 for use with the aerosol generating device 100. The heating element 30 is attached to the outer wall of the chamber 40, thereby heating the aerosol generating product 200 in the chamber 40. When heated, a portion of the active material filled in the aerosol generating product 200 evaporates to generate an aerosol, which a user inhales by inhaling the aerosol generating product 200.

[0054] The aerosol-generating article 200 preferably comprises a tobacco-containing material that releases volatile compounds from the article upon heating; alternatively, it may comprise a non-tobacco material that is suitable for electrically heated smoking after heating. The aerosol-generating article 200 preferably comprises a solid substrate that may comprise one or more of powder, granules, shredded strips, ribbons, or flakes of one or more of herb leaves, tobacco leaves, homogenized tobacco, and expanded tobacco; alternatively, the solid substrate may contain additional tobacco or non-tobacco volatile flavor compounds that are released upon heating of the substrate.

[0055] In some embodiments, the heating element 30 may be a mesh-shaped resistive heating element coated on the outer wall of the chamber 40. The mesh-shaped resistive heating element 40 is electrically connected to the mainboard 20. When energized, the heating element 30 generates heat, which is transferred to the aerosol-generating article 200 in the chamber 40 through the walls of the chamber 40. The chamber 40 is made of a highly thermally conductive material to efficiently transfer the heat generated by the heating element 30 to the aerosol-generating article 200. The highly thermally conductive material may be a metal or a ceramic material, and the ceramic material may be any of oxides, nitrides, carbides, borides, and the like.

[0056] In another embodiment shown in FIG. 2 , the heating element 30 at least partially extends into the chamber 40, and the end thereof extending into the chamber 40 is configured as a pin or a sheet, so that the heating element 30 can be inserted into the aerosol-generating article 200 for heating, thereby improving the heating efficiency of the heating element 30. The heating element 30 may be a ceramic heating element, which is a heating element made by sintering a resistive heating element and ceramic at high temperature to form a bonded structure.

[0057] The aerosol generating device 100 can also be provided with a temperature sensing element (not shown in the figure), which is used to measure the first temperature value of the heating element 30 and send the measured first temperature value to the controller. The first temperature value of the heating element 30 is the actual temperature value of the heating element 30 in the current state. The controller can control the battery cell 10 to provide power to the heating element 30 according to the first temperature value so that the first temperature value of the heating element 30 gradually increases to reach the target temperature value. The target temperature value of the heating element 30 refers to the target temperature value at which the aerosol generating product 200 can be fully heated and volatilized to produce an aerosol with a better taste.

[0058] In some embodiments, the controller can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), a single-chip microcomputer, an ARM (Acorn RISC Machine) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination of these components. In addition, the controller can also be any conventional processor, controller, microcontroller, or state machine. The controller can also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP, and / or any other such configuration.

[0059] Since the heating element 30 is affected by external factors during the heating process, the first temperature value of the heating element 30 cannot be accurately controlled at the target temperature value based solely on the first temperature value. Therefore, in some embodiments, the controller usually uses a PID control system to control the heating element 30 for heating to minimize the influence of external factors.

[0060] Furthermore, because heating element 30 utilizes a resistive heating material, due to the inherent properties of resistive heating materials, when heating element 30 reaches the target temperature, the temperature of heating element 30 will continue to rise for a period of time, resulting in an overshoot phenomenon, before slowly descending to the target temperature. As shown in Figure 3 , a schematic diagram of a heating curve for heating element 30 illustrates a target temperature of 380°C. When the temperature of heating element 30 reaches 380°C, the temperature of heating element 30 will continue to rise for a period of time before descending to the target temperature, resulting in an overshoot. Specifically, curve C2 between the two dashed lines L1 and L2 in Figure 3 represents the overshoot phase. As can be seen from Figure 3 , the maximum overshoot peak at time tm can reach 40°C. This overshoot phenomenon can affect PID control of the temperature of heating element 30, thereby affecting the taste of the aerosol.

[0061] Based on the above-described aerosol generating device 100, an embodiment of the present application provides a control method for the aerosol generating device 100 to at least partially eliminate the overshoot phenomenon of the heating element 30 and alleviate the impact of the overshoot phenomenon on the temperature control of the heating element 30. As shown in FIG5, the method includes:

[0062] Step S20, obtaining a first temperature value of the heating element;

[0063] Step S30, obtaining a second temperature value after compensating the first temperature value, wherein the second temperature value is greater than the first temperature value;

[0064] Step S40, determining the power output to the heating element based on the second temperature value and the target temperature value of the heating element; controlling the power supply to output the power so that the first temperature value of the heating element approaches the target temperature value of the heating element;

[0065] The first temperature value is the actual temperature value of the heating element in the current state.

[0066] As shown in FIG3 , the heating curve diagram of the heating element 30 includes a preheating stage C1, which is the curve before the dotted line L1. During the preheating stage, the controller controls the battery cell 10 to provide a relatively large power to the heating element 30, so that the first temperature value of the heating element 30 rises rapidly to reach the target temperature value. When the temperature sensing element detects that the first temperature value reaches the target temperature value, the controller controls to stop providing power to the heating element 30. At this time, the heating element 30 begins to enter the overshoot stage under the action of its own material. After the overshoot stage is completed, the heating element 30 begins to enter the inhalation stage, which is the curve C3 after the dotted line L2 in FIG3 . During the inhalation stage, the controller controls the battery cell 10 to provide a relatively small power to the heating element 30, so that the first temperature value of the heating element 30 is basically maintained at the target temperature value. The user can start using the aerosol generating product 200 for inhalation during the inhalation stage. In some examples, the first preset duration refers to the sum of the durations of the preheating stage and the overshoot stage, that is, the duration from the start of heating to the time when the heating element 30 basically maintains the target temperature value, that is, the duration experienced by curves C1 and C2 in Figure 3.

[0067] It should be noted that the first preset time is set according to different heating elements 30, or according to different aerosol generating devices 100. Different heating elements 30, or different internal structures of the aerosol generating devices 100, will result in different first preset time lengths. In this embodiment, the first preset time length is 60S for illustration.

[0068] The first temperature value can be obtained by the above-mentioned temperature sensing element, or, in some embodiments, according to the TCR (temperature coefficient of resistance) of the resistive heating element, the first temperature value of the heating element 30 can be converted by obtaining the current resistance value of the heating element 30.

[0069] The compensation temperature value is a temperature value pre-set in the controller and is used to compensate for the overshoot value generated by the heating element 30, thereby at least partially eliminating the overshoot phenomenon of the heating element 30. It can be selected based on the overshoot situation of the heating element 30 and the target temperature value of the heating element 30. Since different heating elements 30 or aerosol generating devices 100 with different structures have different overshoot situations, different heating elements 30 or aerosol generating devices 100 with different structures also have different compensation temperature values.

[0070] Specifically, within the first preset time period, the controller is configured to periodically obtain the first temperature value of the heating element 30, so that within the first preset time period, the controller will obtain the first temperature value N times in total. At the same time, N compensation temperature values ​​are pre-set in the controller, and the N compensation temperature values ​​are arranged in sequence. Each compensation temperature value corresponds to a first temperature value. The controller can add the compensation temperature value corresponding to the first temperature value each time it obtains the first temperature value to obtain the second temperature value.

[0071] For example, if the first preset time duration is 60 seconds, and the controller is configured to obtain the first temperature value every 1 second, then the controller will obtain the first temperature value 60 times in 60 seconds. At this time, the controller can be pre-set with 60 temperature compensation values ​​(in degrees Celsius) in the following arrangement, each temperature compensation value corresponding to a first temperature value:

[0072] 20,20,20,20,20,15,15,15,15,15,15,15,15,15,15,15,12,12,12,12,12,10,10,10,10,10,

[0073] 8,8,8,8,8,6,6,6,6,6,5,5,5,5,5,4,4,4,4,4,3,3,3,3,3,2,2,2,2,2,1,1,1,1,1

[0074] Thus, when the controller obtains the first temperature value of the heating element 30 for the first time, the controller adds the first compensation temperature value 20 to the first temperature value to obtain the first second temperature value; and when the controller obtains the first temperature value of the heating element 30 for the second time, the controller adds the second compensation temperature value 20 to the first temperature value to obtain the second second temperature value. When the controller obtains the first temperature value of the heating element 30 for the sixth time, the controller adds the first compensation temperature value 15 to the first temperature value to obtain the sixth second temperature value. And so on. When the controller obtains the first temperature value of the heating element 30 for the 60th time, which is the last time, the controller adds the last compensation temperature value 1 to the first temperature value obtained last time to obtain the 60th second temperature value.

[0075] Usually, when the controller performs PID control, the controller will input the first temperature value of the heating element 30, that is, the actual temperature value of the heating element 30 in the current state and the target temperature value to be achieved into the PID control system respectively. The PID controls the output of the corresponding duty cycle according to the difference between the input actual temperature value and the target temperature value. If the difference between the actual temperature value and the target temperature value is large, the output duty cycle is large, and if the difference between the actual temperature value and the target temperature value is small, the output duty cycle is small, thereby adjusting the power input to the heating element 30 so that the first temperature value gradually approaches the target temperature value.

[0076] In this embodiment, the inputs to the PID control system are the second temperature value and the target temperature value, and the second temperature value is obtained by adding the first temperature value and the compensation temperature value. Therefore, the difference between the second temperature value and the target temperature value is smaller than the difference between the first temperature value and the target temperature value, and the duty cycle output by the controller is smaller than when the compensation temperature value is not added. As a result, the power output to the heating element 30 is also relatively small, which can reduce the rate of temperature rise of the heating element 30 before reaching the target temperature value, thereby alleviating or eliminating the overshoot of the heating element 30. As shown in Figure 4, Figure 4 is a schematic diagram of the heating curve after the heating element 30 is overshoot-treated using the control method provided in this embodiment. As can be seen from Figure 4, the maximum overshoot peak at time tm is only 10°C, which means that the overshoot of the heating element 30 is alleviated after reaching the target temperature value of 380°C.

[0077] In some embodiments, the method further comprises:

[0078] Confirm that the startup state of the aerosol generating device is cold start.

[0079] Due to the material properties of the resistive heating element, when the heating element 30 stops heating after a period of time and then starts heating again within a short period of time, that is, when the aerosol generating device 100 is in a hot start state, since the residual temperature on the heating element 30 is still relatively high, no significant overshoot will occur when the heating element 30 is heated again, and it is not necessary to provide a compensation temperature value during the heating process of the heating element 30.

[0080] Therefore, based on the above reasons, before compensating to the first temperature value, it is necessary to confirm whether the aerosol generating device 100 is in a cold start or hot start state. A cold start means that when the aerosol generating device 100 is started next time, the temperature of the heating element 30 has dropped to a relatively low level; and a hot start means that when the aerosol generating device 100 is started next time, the temperature of the heating element 30 is still relatively high and the heating element 30 has not completely cooled down.

[0081] Furthermore, in some embodiments, as shown in FIG6 , the method further includes:

[0082] S21a, determining whether the first temperature value of the heating element is less than a preset first temperature threshold;

[0083] S30a: If yes, perform temperature compensation on the first temperature value.

[0084] Specifically, a preset first temperature threshold can be set in the controller to determine whether it is a cold start or a hot start. For example, if the preset first temperature threshold is 50°C, then when the aerosol generating device 100 is next started, the controller obtains a first temperature value through the temperature sensing element. This first temperature value is the initial temperature value of the heating element 30 when it is first started, and compares the initial temperature value with the preset first temperature threshold. If the initial temperature value is less than the first temperature threshold, it is a cold start; if it is greater than the temperature threshold, it is a hot start. In the cold start state, the first temperature value needs to be temperature compensated; in the hot start state, the first temperature value does not need to be temperature compensated. The first temperature value and the target temperature value can be directly PID-calculated, and no compensation temperature value is required.

[0085] Alternatively, in some embodiments, as shown in FIG7 , the method further includes:

[0086] S21b, obtaining the interval between the start of the aerosol generating device and the last stop of the aerosol generating device;

[0087] S22b, determining whether the interval duration is greater than a second preset duration;

[0088] S30b: If yes, then compensate the first temperature value.

[0089] Specifically, a cold start or a hot start can be determined by the interval between two adjacent operations of the heating element 30, that is, the interval between the start of the aerosol generating device 100 and the last stop of the aerosol generating device 100. At the same time, a second preset time is set in the controller. After the aerosol generating device 100 stops working, within the second preset time, the temperature on the heating element 30 can drop to the above-mentioned first temperature threshold. If the interval is less than the second preset time, it means that the cooling time of the heating element 30 is short, and the aerosol generating device 100 is hot started this time; if the interval is greater than the second preset time, it means that the cooling time of the heating element 30 is long, and the aerosol generating device 100 is cold started this time, and then the control is used to compensate for the first temperature value.

[0090] In some embodiments, as shown in the above content, the compensation temperature values ​​of the 1st to 5th are all 20, the compensation temperature values ​​of the 6th to 15th are all 15, the compensation temperature values ​​of the 16th to 20th are all 12, the compensation temperature values ​​of the 21st to 25th are all 8, and the compensation temperature values ​​of the 56th to 60th are all 1. It can be seen that these 60 compensation temperature values ​​are arranged in a decreasing trend as a whole.

[0091] Since the first temperature value of the heating element 30 begins to slowly decrease after reaching the overshoot peak value during the overshoot stage, and the overshoot temperature gradually decreases, a larger compensation temperature value is provided in the early stage of compensation, and a smaller compensation temperature value is provided in the later stage. This can be coordinated with the change of the overshoot temperature of the heating element 30 during the process stage, which is beneficial to alleviating or eliminating the overshoot of the heating element 30.

[0092] Since the first temperature value of the heating element 30 decreases relatively slowly after reaching the overshoot peak value, typically decreasing by one degree within a few seconds, based on this, in some embodiments, the method further includes:

[0093] In the first time segment, a plurality of identical first compensated temperature values ​​are obtained; in the second time segment, a plurality of identical second compensated temperature values ​​are obtained; wherein, the second compensated temperature value is smaller than the first compensated temperature value.

[0094] Taking the above-mentioned first preset duration of 60S as an example, the second preset duration includes first time segments adjacent to each other and a second time segment located after the first time segment. For example, the first time segment can be the time segment between the 1S and the 5S, and the second time segment is the time segment between the 6S and the 15S; or the first time segment is the time segment between the 6S and the 15S, and the second time segment is the time segment between the 16S and the 20S, and so on.

[0095] In the first time segment, the first compensation temperature value obtained by the controller is 20, while in the second time segment, the second compensation temperature value obtained by the controller is 15. That is to say, the same compensation temperature value can be maintained for several seconds. Only when entering the next time segment will the controller continue to obtain a smaller temperature compensation value. There is no need to obtain a different temperature compensation value each time, which facilitates control.

[0096] In some embodiments, in order to achieve a more ideal effect of eliminating overshoot, the compensation temperature values ​​can be arranged in the following decreasing order:

[0097] 20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,

[0098] That is, the compensation temperature values ​​include adjacent first compensation temperature values ​​and a second compensation temperature value located after the first compensation temperature value, and the second compensation temperature value is smaller than the first compensation temperature value. As a result, the next temperature compensation value acquired by the controller is always smaller than the previously acquired temperature compensation value, which is beneficial for eliminating overshoot. Furthermore, in some embodiments, to facilitate control by the controller, the multiple compensation temperature values ​​may all be equal within a preset time period.

[0099] In some embodiments, the control method further includes:

[0100] The first temperature value is compensated when the heating element starts heating.

[0101] If the preheating phase of the aerosol generating device 100 is short, for example, the target temperature value is reached within 2 to 3 seconds, the controller needs to obtain the first temperature value and compensate the first temperature value when the heating element 30 starts working, so as to at least partially eliminate overshoot when the heating element 30 reaches the target temperature value.

[0102] Alternatively, in some embodiments, the control method further includes:

[0103] Determining whether the first temperature value reaches a preset second temperature threshold;

[0104] If so, the first temperature value is compensated. If the preheating phase of the aerosol generating device 100 takes a long time, for example, it takes 6 to 8 seconds to reach the target temperature value, then it is not necessary to obtain the compensation temperature value when the heating element 30 starts working. A preset second temperature threshold can be set in the controller in advance, for example, the second temperature threshold is 250°C. The controller compares the obtained first temperature value with the second temperature threshold. If the first temperature value reaches the second temperature threshold, the controller starts to compensate for the first temperature value, without having to compensate when the heating element 30 starts heating.

[0105] Furthermore, it should be noted that the controller can also be configured to obtain the first temperature value every 1ms, or configured to obtain the first temperature value every other time interval. The number of corresponding compensation temperature values ​​also needs to be adjusted, as long as the number of compensation temperature values ​​is the same as the number of first temperature values ​​obtained. In this embodiment, the controller is preferably configured to obtain the first temperature value every 1s. On the one hand, this allows the controller to not process too much data, and on the other hand, it can achieve a more ideal effect of eliminating overshoot.

[0106] In addition, it should be noted that, in some embodiments, the controller pre-stores a second temperature value that is compensated for the first temperature value, that is, a table corresponding to the first temperature value and the second temperature value is pre-stored in the controller. When the controller obtains the first temperature value, it can obtain the compensated second temperature value corresponding to the first temperature value by looking up the table, without setting the above-mentioned temperature compensation value, and further without adding the temperature compensation value and the first temperature value to obtain the second temperature value.

[0107] Also, it should be noted that the method for eliminating overshoot described in the above embodiment is not limited to the preheating stage of the aerosol generating device 100, but can also be applied in the inhalation stage of the aerosol generating device 100 to eliminate the overshoot phenomenon that may exist in the inhalation stage.

[0108] Furthermore, as shown in Figure 8 , the controller 800 includes at least one processor 81 and a memory 82 in communication with the at least one processor 81. Figure 8 uses one processor 81 as an example. The memory 82 stores instructions executable by the at least one processor 81. The instructions are executed by the at least one processor 81 to enable the at least one processor 81 to perform the control method of the above embodiment. The processor 81 and the memory 82 can be connected via a bus or other means. Figure 8 uses a bus connection as an example.

[0109] The processor 81 can be implemented by using at least one of the following: an application-specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), a field programmable gate array (FPGA), a processor, a controller, a microcontroller, a microprocessor, or other electronic units that perform these functions.

[0110] The memory 82 includes high-speed random access memory and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state memory device. In some embodiments, the memory may optionally include a memory located remotely from the processor, which may be connected to the aerosol-generating device via a network. Examples of such networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0111] The memory 82 is used to store non-volatile software programs, non-volatile computer-executable programs, and modules, such as program instructions and modules corresponding to the control methods and devices described herein. The processor executes the non-volatile software programs, instructions, and modules stored in the memory to execute various functional applications and data processing of the aerosol generating device, thereby implementing the control methods described in the above embodiments.

[0112] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Based on the concept of the present application, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present application as described above. For the sake of simplicity, they are not provided in detail. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A control method for an aerosol generating device, the aerosol generating device comprising a power source and a heating element, the heating element being configured to heat an aerosol article to generate an aerosol, characterized in that, The control method includes: Obtaining a first temperature value of the heating element; Obtaining a second temperature value obtained by compensating the first temperature value, where the second temperature value is greater than the first temperature value; Based on the second temperature value and the target temperature value of the heating element, to determine the power output to the heating element; Controlling the power supply to output the power, so that the first temperature value of the heating element approaches the target temperature value of the heating element; Wherein, the first temperature value is the actual temperature value of the heating element in the current state.

2. The control method according to claim 1, wherein The method further includes: Obtaining the second temperature value within a first preset duration; Wherein, the first preset duration is the duration between when the heating element starts heating and reaches the target temperature value.

3. The control method according to claim 1, characterized in that The method further includes: Obtaining a compensation temperature value corresponding to the first temperature value; Adding the first temperature value and the compensation temperature value to obtain the second temperature value.

4. The control method according to claim 1, characterized in that, The first temperature value includes the initial temperature value when the heating element starts heating, and the method further includes: Judging whether the first temperature value of the heating element is less than a preset first temperature threshold, and if so, performing temperature compensation on the first temperature value.

5. The control method according to claim 1, wherein The method further includes: Obtaining the interval duration between the current start of work and the last stop of work of the aerosol generating device; Judging whether the interval duration is greater than a second preset duration; If so, compensating the first temperature value.

6. The control method according to claim 3, wherein There are multiple compensation temperature values, and the multiple compensation temperature values include an adjacent first compensation temperature value and a second compensation temperature value located after the first compensation temperature value, and the second compensation temperature value is not greater than the first compensation temperature value.

7. The control method according to claim 6, characterized in that, The aerosol generating device has a first preset duration for the heating element to start heating and reach the target temperature value, and the first temperature value is obtained within the first preset duration. The first preset duration includes an adjacent first time period and a second time period located after the first time period. The method further includes: Obtaining multiple identical first compensation temperature values in the first time period; Obtaining multiple identical second compensation temperature values in the second time period; Wherein, the second compensation temperature value is less than the first compensation temperature value.

8. The control method according to claim 1, wherein The method further includes: Compensating the first temperature value when the heating element starts heating.

9. The control method according to claim 1, characterized in that, The method further includes: Judging whether the first temperature value reaches a preset second temperature threshold; If so, compensating the first temperature value.

10. The control method according to claim 1, characterized in that The determining the power output to the heating element based on the second temperature value and the target temperature value of the heating element further includes: Inputting the second temperature value and the target temperature value into a PID control system to determine the duty cycle output to the heating element.

11. The control method according to claim 1, characterized in that, The time interval between any two adjacent acquisitions of the first temperature value is 1S.

12. An aerosol generating device includes a controller, characterized in that, The controller includes a processor and a memory. The memory stores a computer program, and when the processor executes the computer program, it implements the control method of the aerosol generating device according to any one of claims 1-11.

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